Integrated treatment system for multiple water species wastewater in industrial park

Abstract

The present application relates to a kind of industrial park multi-water kind wastewater integrated treatment system, it includes coarse grid pool, rotary grit system, adjusting pool, materialization reaction pool, hydrolysis tank, biochemical pool, two sedimentation tank systems, depth processing system, ozone contact tank and disinfection contact tank in series, wherein materialization reaction pool includes dosing stirring reaction zone, materialization pool flocculation zone and materialization pool sedimentation separation zone, and dosing stirring reaction zone can realize Fenton oxidation reaction to improve wastewater biodegradability, then wastewater is treated by biochemical pool, and each index is well treated, wherein the pre-anoxic zone in biochemical pool can reduce the influence of reflux sludge on anaerobic zone, internal reflux channel can recycle reflux sludge, then wastewater is precipitated and deeply treated by two sedimentation tank systems and depth processing system.The present application can guarantee that industrial park wastewater is stably discharged up to standard, and equipment can be realized according to wastewater situation Surpassing, while meeting the wastewater treatment requirements of large water volume and high dirt.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, specifically to an integrated treatment system for multiple types of wastewater in industrial parks. Background Technology

[0002] Industrial park wastewater treatment has the following characteristics: First, the types of enterprises within the park are diverse, including textile, pharmaceutical, chemical, food, rubber, and slaughtering companies, leading to complex wastewater composition. Furthermore, the industrial wastewater from each enterprise is usually pre-treated before discharge, resulting in poor biodegradability. Mixing wastewater from different types of enterprises may also produce new chemical reactions, generating substances that are even more difficult to degrade. Additionally, industrial park wastewater generally includes some domestic wastewater, further increasing its complexity. Second, different types of industrial parks have varying degrees of wastewater pollution, while existing wastewater treatment systems are typically designed for only a specific type of park wastewater. For example, patent CN4027828068U discloses a treatment system for industrial park wastewater primarily from papermaking, while patent CN102515436A discloses a wastewater treatment process for PCB industrial parks. Third, industrial park wastewater is characterized by large volumes and high levels of pollutants, placing high demands on the treatment capacity of wastewater treatment systems. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated wastewater treatment system for multiple types of water in industrial parks, which can ensure the stable discharge of wastewater in industrial parks in compliance with standards, and can achieve equipment overruns according to the wastewater conditions, while meeting the requirements for treating large volumes of wastewater with high levels of pollutants.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] An integrated wastewater treatment system for multiple water types in an industrial park includes, in series, a coarse screen tank, a rotary grit chamber, an equalization tank, a physicochemical reaction tank, a hydrolysis tank, a biological tank, a secondary sedimentation tank system, a deep treatment system, an ozone contact tank, and a disinfection contact tank. The physicochemical reaction tank comprises, in series, a chemical dosing and stirring reaction zone, a physicochemical flocculation zone, and a physicochemical sedimentation and separation zone. The chemical dosing and stirring reaction zone further comprises, in series, an acidification zone, a ferrous salt zone, a hydrogen peroxide zone, and an alkali adjustment zone. The acidification zone is connected to the equalization tank, the alkali adjustment zone is connected to the physicochemical flocculation zone, and the sedimentation and separation zone is connected to the hydrolysis tank. The biological tank has an inlet area connected to the hydrolysis tank at one end and an external sludge return well at the other end. Inner tanks are located on both sides of the biological tank. The system consists of an inner tank group and an outer tank group. The inner tank group includes a pre-anoxic zone, an anaerobic zone, and an anoxic zone connected in sequence. The pre-anoxic zone and the anaerobic zone are connected to the inlet area of ​​the biological treatment tank through corresponding inlets. The outer tank group includes multiple aerobic zones connected in sequence. The innermost aerobic zone is connected to the end of the corresponding anoxic zone. The outermost aerobic zone has an outlet well for the biological treatment tank connected to the distribution well in the secondary sedimentation tank system. There are two external return channels between the two inner tank groups. The input end of the external return channel is connected to the external return sludge well, and the output end is connected to the pre-anoxic zone on the corresponding side. There are internal return channels between the inner tank group and the outer tank group on the same side. The input end of the internal return channel is connected to the outlet well of the corresponding biological treatment tank, and the output end is connected to the head of the corresponding anoxic zone on the corresponding side.

[0006] The rotary grit settling system includes a fine screen tank and a vortex grit settling device. The fine screen tank includes a fine screen tank inlet area and a fine screen area, and a control gate is provided between the fine screen tank inlet area and the fine screen area. A rotating fine screen is provided in the fine screen area, and a hanging plate is provided on the rotating fine screen. A screw conveyor is provided at the upper end of the rotating fine screen and a fine screen flushing system is provided at the lower side. Multiple connecting pipes are provided on the output side of the fine screen area and are respectively connected to the corresponding vortex grit settling device. An output pipe is provided on one side of the vortex grit settling device, and each output pipe is connected to a main outlet pipe. The main outlet pipe is connected to a regulating tank.

[0007] The physicochemical reaction tank includes an equipment area, which is equipped with an acid tank, an iron salt tank, a hydrogen peroxide tank, and an alkali tank. The acid tank is connected to the acid adjustment area via a pipeline, the iron salt tank is connected to the ferrous salt area via a pipeline, the hydrogen peroxide tank is connected to the hydrogen peroxide section via a pipeline, and the alkali tank is connected to the alkali adjustment area.

[0008] The flocculation zone of the physicochemical tank includes multiple triangular folded plate flocculation zones near the chemical dosing and stirring reaction zone and multiple straight plate flocculation zones near the sedimentation and separation zone of the physicochemical tank. The triangular folded plate flocculation zones are equipped with multiple flow channel baffles, and the flow channel baffles are equipped with triangular folded plate sections. The straight plate flocculation zones are equipped with multiple straight plates, and the tail end of the straight plate flocculation zone near the sedimentation and separation zone of the physicochemical tank is equipped with a flocculation effluent transition section without straight plates. Each triangular folded plate flocculation zone and each straight plate flocculation zone is equipped with a sludge discharge pipe for flocculation zone sludge.

[0009] The physicochemical sedimentation separation zone includes an inlet zone, a sedimentation zone, a scum channel, a clear water channel, and a residue zone arranged sequentially along the water flow direction. The inlet zone is connected to the flocculation zone of the physicochemical tank. The output end of the sedimentation zone is connected to the clear water channel via a clear water pipe. The clear water channel is connected to the hydrolysis tank via the physicochemical effluent main pipe. The scum channel is equipped with a scum discharge pipe and is connected to the residue zone. In addition, the clear water channel is connected to the input end of the dissolved air tank via the dissolved air tank inlet pipe. The inlet zone is equipped with a contact transition chamber connected to the sedimentation zone, and the output end of the dissolved air tank is connected to the release head located in the contact transition chamber via the dissolved air tank return water pipe.

[0010] The biological treatment tank has inlet channels on both sides of the inlet area. Each inlet channel has an inlet for a pre-anoxic zone connected to the corresponding pre-anoxic zone and an inlet for an anaerobic zone connected to the corresponding anaerobic zone. The axes of the pre-anoxic zone inlet and the anaerobic zone inlet are perpendicular, and the axis of the anaerobic zone inlet is perpendicular to the direction of the incoming water flow. Each aerobic zone in the outer tank group has a U-shaped air duct, and each air duct contains a closed U-shaped air pipe. Both sides of each air pipe are equipped with biological treatment tank aeration pipes. The air pipes extend to different aerobic zones; the interior of the external sludge return well is divided into a sludge inlet chamber and a drive chamber by a sludge well partition wall, wherein the sludge inlet chamber is equipped with an external sludge return pipe connected to the secondary sedimentation tank system, and the drive chamber is equipped with two sets of external sludge return pumps, and the external sludge return pumps are respectively connected to the input end of the corresponding external sludge return channel; the effluent well of the biological treatment tank is equipped with an effluent partition wall, and an internal sludge return pump is provided on the inner side of the effluent partition wall and connected to the bottom end of the internal sludge return lift pipe, and the upper end of the internal sludge return lift pipe is connected to the input end of the corresponding internal sludge return channel.

[0011] The secondary sedimentation system includes a distribution well and multiple secondary sedimentation tanks. The distribution well, from the inside out, has a central sludge chamber, a distribution well inlet chamber, and a distribution well outlet chamber. The upper ends of the distribution well inlet chamber and the distribution well outlet chamber are connected by a water passage. Each secondary sedimentation tank has a secondary sedimentation tank separation chamber, and a single-pipe sludge suction machine is installed inside the separation chamber. The single-pipe sludge suction machine has a scum scraper at its upper end, and a scum baffle is installed at the free end of the scum scraper. The upper inner wall of the separation chamber has a secondary sedimentation tank outlet channel and a secondary sedimentation tank inlet channel, from the inside out. The bottom of the secondary sedimentation tank inlet channel has a water distribution hole that communicates with the secondary sedimentation tank separation chamber. Water in the upper part of the separation chamber overflows through the gaps in the scum baffle. In the secondary sedimentation tank effluent channel; the bottom end of the water distribution well inlet chamber is provided with a biological treatment tank water inlet pipe, and the bottom end of the water distribution well outlet chamber is provided with multiple drainage pipes, which are respectively connected to the corresponding secondary sedimentation tank inlet channel; the bottom end of the central sludge chamber is provided with a biological treatment tank return sludge pipe and multiple sludge inlet pipes; the bottom of the secondary sedimentation tank separation chamber is provided with a secondary sedimentation tank sludge return pipe, and one end of the secondary sedimentation tank sludge return pipe is connected to a single-pipe sludge suction machine, and the other end is connected to the corresponding sludge inlet pipe at the bottom end of the central sludge chamber; the width of the secondary sedimentation tank inlet channel gradually narrows along the water flow direction, the width of the secondary sedimentation tank effluent channel gradually widens along the water flow direction, and the spacing between adjacent water distribution holes gradually increases along the water flow direction.

[0012] The rotary sedimentation system has a bypass main pipe on its output side, and the bypass main pipe has a first bypass branch pipe connected to the output pipe of the hydrolysis tank and a second bypass branch pipe connected to the output pipe of the secondary sedimentation tank system. The deep treatment system includes a flocculation sedimentation unit and a sedimentation filter connected in sequence. The flocculation sedimentation unit has an regulating channel on its input side, a filter inlet channel is provided between the flocculation sedimentation unit and the sedimentation filter, and a filter outlet channel is provided outside the sedimentation filter. The regulating channel is connected to the secondary sedimentation tank system, and the regulating channel has a regulating channel lift pipe connected to the flocculation sedimentation unit, a first unit bypass pipe connected to the filter inlet channel, a second unit bypass pipe connected to the filter outlet channel, and the filter outlet channel is connected to the ozone contact tank.

[0013] The flocculation and sedimentation unit includes a unit flocculation tank and an inclined plate sedimentation tank. The unit flocculation tank contains a first flocculation channel, a second flocculation channel, a third flocculation channel, and a transition channel arranged in parallel and connected sequentially. The first flocculation channel contains a first baffle forming a reciprocating flow path, and adjacent first baffles have triangular folded plate portions A of the same height but opposite angles. The second flocculation channel contains a second baffle forming a reciprocating flow path, and adjacent second baffles have triangular folded plate portions B of the same height and same angles. The third flocculation channel contains multiple straight baffles forming reciprocating flow paths, and the straight baffles have through holes. The inclined plate sedimentation tank contains... From bottom to top, the system comprises a sedimentation tank sludge hopper, a water distribution area, an inclined plate area, and a unit water collection trough. The water distribution area is connected to the transition channel. The inclined plate area has multiple inclined plates arranged at equal intervals. The unit water collection trough is connected to a connecting channel located outside the inclined plate sedimentation tank. The connecting channel is connected to the filter inlet channel on the input side of the grit filter. Inside the grit filter, from bottom to top, there are a filter sedimentation area, a filtration device, a quartz sand packing area, a filter water distribution pipe, and a filter outlet trough. The filter water distribution pipe is connected to the filter inlet channel, and a connecting pipe is provided on the lower side of the filter water distribution pipe to connect to the filtration device. The filtration device has a filtered water outlet surface on the upper side and a sedimentation outlet on the lower side. The filter outlet trough is connected to the filter outlet channel.

[0014] The ozone contact tank is equipped with an inlet system at one end and an ozone outlet channel at the other end. The ozone contact tank has an equipment chamber in the middle and ozone tank systems on both sides. Each ozone tank system includes staggered and sequentially connected ozone reaction tanks and transition tanks. Inside each ozone reaction tank, from top to bottom, there is an ozone distribution chamber, a catalyst packing layer, and an ozone aeration chamber. The ozone distribution chamber in the first ozone reaction tank is connected to the inlet system, while the ozone distribution chambers of the other ozone reaction tanks are connected to the transition tanks on the input side. An ozone tank with an upper water-passing weir is provided. Each ozone reaction tank has a tank body partition with a water-passing hole at the lower end between the ozone tank aeration chamber and the transition tank on the output side. The upper end of the transition tank at the end is connected to the ozone tank outlet channel. The ozone tank aeration chamber is provided with a first backwash connecting pipe, the transition tank is provided with a second backwash connecting pipe, and the ozone tank water distribution chamber is provided with a backwash outlet connecting pipe. The first backwash connecting pipe, the second backwash connecting pipe, and the backwash outlet connecting pipe are all connected to the backwash pipeline system located in the equipment cavity.

[0015] The advantages and positive effects of this invention are as follows:

[0016] 1. This invention achieves Fenton oxidation reaction with high ability to remove recalcitrant organic pollutants through a physicochemical reaction tank, improving the biodegradability of wastewater. Then, the wastewater is treated well through a biological treatment tank. The pre-anoxic zone in the biological treatment tank can reduce the impact of returned sludge on the anaerobic zone. The internal return channel can recycle the returned sludge water. After sedimentation and deep treatment through the secondary sedimentation tank system and the deep treatment system, the wastewater from the industrial park can achieve stable and compliant discharge.

[0017] 2. This invention can achieve equipment overhaul according to the wastewater conditions, and thus can be used to meet the treatment needs of different types of industrial parks with different levels of pollution, unlike existing technologies where treatment systems are usually only designed for specific types of industrial parks.

[0018] 3. The related equipment of this invention is designed in multiple sets to meet the needs of large-volume water treatment. The rotating fine screen in the rotating grit removal system can rotate to cooperate with flushing and timely discharge of sludge. Combined with multiple sets of vortex grit removal devices, it can meet the treatment needs of high-sludge wastewater. In addition, the related equipment is integrated design, with a compact structure and saves space. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the rotating sedimentation system.

[0021] Figure 3 for Figure 2 Top view of a rotating sedimentation system.

[0022] Figure 4 for Figure 2 A three-dimensional schematic diagram of a rotating fine grid.

[0023] Figure 5 for Figure 1 Schematic diagram of the structure of the physicochemical reaction tank.

[0024] Figure 6 for Figure 5 Cross-sectional view of the mixing and reaction zone for the addition of pharmaceutical ingredients.

[0025] Figure 7 for Figure 5 A cross-sectional view of the triangular folded plate flocculation zone in the flocculation area of ​​the physicochemical tank.

[0026] Figure 8 for Figure 5 A cross-sectional view of the straight-plate flocculation zone in the flocculation area of ​​the physicochemical tank.

[0027] Figure 9 for Figure 5Cross-sectional view of the sedimentation and separation zone in the physicochemical tank.

[0028] Figure 10 for Figure 1 Top view of the biochemical pool.

[0029] Figure 11 for Figure 10 AA view in

[0030] Figure 12 for Figure 11 Enlarged schematic diagram of the lower part of the sludge return well from China and abroad.

[0031] Figure 13 for Figure 10 KK view in

[0032] Figure 14 for Figure 10 BB view in

[0033] Figure 15 for Figure 10 MM view in

[0034] Figure 16 for Figure 10 LL view in

[0035] Figure 17 for Figure 1 Top view of the secondary sedimentation tank system.

[0036] Figure 18 for Figure 17 A top view of the central water distribution well.

[0037] Figure 19 for Figure 18 View II in the middle,

[0038] Figure 20 for Figure 18 JJ View in

[0039] Figure 21 for Figure 17 A top view of the secondary settling tank.

[0040] Figure 22 for Figure 21 HH view in

[0041] Figure 23 for Figure 22 Enlarged view of point C in the image.

[0042] Figure 24 for Figure 21 A top view of the structure after the circular inlet and outlet channels of the secondary sedimentation tank are fully extended into straight lines.

[0043] Figure 25 for Figure 1 Top view of a medium-depth processing system

[0044] Figure 26 for Figure 25 Enlarged schematic diagram of the medium-sized flocculation and sedimentation unit.

[0045] Figure 27 for Figure 26 The P1-P1 view in the middle,

[0046] Figure 28 for Figure 26 The P2-P2 view in the middle,

[0047] Figure 29 for Figure 26 The P3-P3 view in the middle,

[0048] Figure 30 for Figure 26 The P4-P4 view in the middle,

[0049] Figure 31 for Figure 25 NN view in

[0050] Figure 32 for Figure 1 A top view of the ozone contact tank.

[0051] Figure 33 for Figure 32 The T1-T1 view in the middle,

[0052] Figure 34 for Figure 32 The T2-T2 view in the image.

[0053] Among them, 1 is the coarse screen tank; 2 is the rotary grit removal system; 3 is the equalization tank; 4 is the physicochemical reaction tank; 5 is the hydrolysis tank; 6 is the biological treatment tank; 7 is the water distribution well; 8 is the secondary sedimentation tank; 9 is the deep treatment system; 10 is the disinfection contact tank; 11 is the ozone contact tank; 12 is the intermediate lifting tank; 13 is the chemical dosing room; 14 is the sludge treatment system; 15 is the ozone and chlorination workshop; 16 is the bypass main pipe; 1601 is the first bypass branch pipe; and 1602 is the second bypass branch pipe. Detailed Implementation

[0054] The invention will now be described in further detail with reference to the accompanying drawings.

[0055] like Figure 1 As shown, the present invention includes a coarse screen tank 1, a rotating grit chamber 2, an equalization tank 3, a physicochemical reaction tank 4, a hydrolysis tank 5, a biological treatment tank 6, a secondary sedimentation tank system, a deep treatment system 9, an ozone contact tank 11, and a disinfection contact tank 10 connected in series, wherein... Figure 5As shown, the physicochemical reaction tank 4 includes a dosing and stirring reaction zone 402, a physicochemical tank flocculation zone 403, and a physicochemical tank sedimentation and separation zone 404 connected in sequence. The dosing and stirring reaction zone 402 includes an acidification zone 4021, a ferrous salt zone 4022, a hydrogen peroxide zone, and an alkali adjustment zone 4024 connected in sequence. The acidification zone 4021 is connected to the equalization tank 3, the alkali adjustment zone 4024 is connected to the physicochemical tank flocculation zone 403, and the physicochemical tank sedimentation and separation zone 404 is connected to the hydrolysis tank 5. The dosing and stirring reaction zone 402 of the present invention can realize the Fenton oxidation reaction, and the Fenton oxidation reaction has a high ability to remove recalcitrant organic pollutants. Specifically, under the conditions of pH 3.5-4 (controlled by the acidification zone 4021 and the alkali adjustment zone 4024), ferrous ions (Fe) 2+ The reaction between ferrous salt (4022 input) and hydrogen peroxide (H2O2 input) generates hydroxyl radicals with strong oxidizing properties. This causes the complex macromolecular organic matter in industrial wastewater to break down, thereby improving the biodegradability of the wastewater and facilitating subsequent biochemical treatment.

[0056] like Figure 10 As shown, the biological treatment tank 6 has a biological treatment tank inlet area 601 connected to the hydrolysis tank 5 at one end of its middle section. The biological treatment tank 6 has an inner tank group 602 and an outer tank group 605 on both sides. The inner tank group 602 includes a pre-anoxic zone 6021, an anaerobic zone 6022, and an anoxic zone 6023 connected in sequence. The pre-anoxic zone 6021 and the anaerobic zone 6022 are connected to the biological treatment tank inlet area 601 through corresponding inlets. The outer tank group 605 includes multiple aerobic zones connected end-to-end in sequence, with the innermost aerobic zone 6051 connected at its head to the corresponding anoxic zone 6023. The outermost aerobic zone 6052 is connected to the end of the biological treatment tank effluent well 609, which is connected to the distribution well 7 in the secondary sedimentation tank system. There are two external return channels 603 between the two inner tank groups 602. The input end of the external return channel 603 is connected to the external return sludge well 604, and the output end is connected to the pre-anoxic zone 6021 on the corresponding side. There are internal return channels 607 between the inner tank group 602 and the outer tank group 605 on the same side. The input end of the internal return channel 607 is connected to the biological treatment tank effluent well 609 on the corresponding side, and the output end is connected to the head end of the anoxic zone section 6023 on the corresponding side. Because industrial park wastewater has a complex composition, its returned sludge often has a high oxygen content and contains substances such as nitrates, which can inhibit anaerobic bacteria. This invention can buffer the external returned sludge by setting up a pre-anoxic zone 6021. After the external returned sludge enters the pre-anoxic zone 6021, the effect of dissolved oxygen on the anaerobic zone can be reduced. At the same time, the dilution by influent can also reduce the inhibitory effect of nitrates in the water on anaerobic bacteria. The internal return channel 607 can input the returned sludge water formed by nitrification liquid and biochemical sludge into the internal return channel 607 for recycling.

[0057] like Figure 1As shown, the rotary sedimentation system 2 has a bypass manifold 16 on its output side, and the bypass manifold 16 has a first bypass branch pipe 1601 connected to the output side pipeline of the hydrolysis tank 5, and a second bypass branch pipe 1602 connected to the output side pipeline of the secondary sedimentation tank system, as shown. Figure 31 As shown, the deep treatment system 9 includes a flocculation sedimentation unit 91 and a grit chamber 92 connected in sequence. The flocculation sedimentation unit 91 has an regulating channel 9111 on its input side, a filter inlet channel 921 between the flocculation sedimentation unit 91 and the grit chamber 92, and a filter outlet channel 922 on the outside of the grit chamber 92. The regulating channel 9111 is connected to the secondary sedimentation tank system, and the regulating channel 9111 is provided with a regulating channel lift pipe 9112 connected to the flocculation sedimentation unit 91, a first unit bypass pipe 9113 connected to the filter inlet channel 921, and a second unit bypass pipe connected to the filter outlet channel 922. The filter outlet channel 922 is connected to the ozone contact tank 11. Because different types of industrial parks discharge wastewater with varying degrees and types of pollution, this invention, through the aforementioned structure, allows for equipment bypassing based on wastewater conditions. Specifically, the effluent from the rotary grit chamber 2 can directly bypass the equalization tank 3, physicochemical reaction tank 4, and hydrolysis tank 5 into the biological treatment tank 6. Alternatively, it can bypass the equalization tank 3, physicochemical reaction tank 4, hydrolysis tank 5, and the distribution well 7 and secondary sedimentation tank 8 of the sedimentation system before directly entering the deep treatment system 9. This constitutes the first layer of bypass pipeline control. And if... Figure 31 As shown, the wastewater from the advanced treatment system 9 can bypass the flocculation and sedimentation unit 91 and directly enter the grit chamber 92 via the first unit bypass pipe 9113, or it can bypass the flocculation and sedimentation unit 91 and the grit chamber 92 via the second unit bypass pipe and directly enter the next process. This is the second layer of bypass control. Through the above structural design, this invention can meet the treatment needs of different types of industrial parks with varying degrees of pollution, unlike existing technologies where treatment systems are typically only designed for specific types of industrial parks.

[0058] like Figures 2-3 As shown, in this embodiment, the rotary grit settling system 2 includes a fine screen tank 21 and a vortex grit settling device 22. The fine screen tank 21 includes a fine screen tank inlet area 212 and a fine screen area 214 separated by a control gate 213. The fine screen tank inlet area 212 is connected to a wastewater pipeline through a fine screen tank inlet pipe 211. The fine screen area 214 is equipped with a rotary fine screen 215, and as shown... Figure 4As shown, the rotating fine screen 215 is provided with a hanging plate 2152 to support the accumulation of filter material. The upper end of the fine screen pool 21 is provided with a screw conveyor 217, and the filter material on the rotating fine screen 215 is poured into the screw conveyor 217 and discharged as the rotating fine screen 215 rotates. The lower side of the fine screen pool 21 is provided with a fine screen washing system 24. In this embodiment, the fine screen washing system 24 includes a washing pipe 241, a washing pump 242 and a washing water tank 243 connected in sequence. The washing pipe 241 is aligned with the rotating fine screen 215. The output side of the fine screen area 214 is provided with multiple connecting pipes 23, and each connecting pipe 23 is connected to the corresponding vortex grit removal device 22. This invention utilizes the flushing pipe 241 to periodically flush the rotating fine screen 215, and the flushed filter material accumulates on each hanging plate 2152 instead of falling back into the wastewater. Simultaneously, the rotating fine screen 215 rotates periodically, and when the hanging plate 2152 rotates to its uppermost position, the filter material accumulated on the hanging plate 2152 is poured into the screw conveyor 217 and discharged in a timely manner. At the same time, as the rotating fine screen 215 rotates, it can also be thoroughly cleaned, thereby ensuring more thorough filtration.

[0059] like Figure 4 As shown, in this embodiment, the rotating fine grid 215 is mounted on a grid seat 2151. The upper end of the grid seat 2151 is provided with a rotating drive device 2153, which drives the rotating fine grid 215 to rotate through a sprocket and chain. The rotating fine grid 215 is mounted on chains on corresponding sides on both sides to achieve rotation. The upper side of the screw conveyor 217 is provided with a mounting base 216 for mounting the rotating drive device 2153.

[0060] like Figures 2-3 As shown, in this embodiment, the cyclone sedimentation device 22 is an air-lift cyclone sedimentation device, such as the device in patent CN211133261U or other suitable commercially available products. In addition, the cyclone sedimentation device 22 is provided with an output pipe 221 on one side, and each output pipe 221 is connected to a main outlet pipe 222, which is connected to the regulating tank 3.

[0061] like Figures 5-9As shown, in this embodiment, the hydrogen peroxide section includes multiple sequentially connected hydrogen peroxide zones 4023. Each of the acidification zone 4021, ferrous salt zone 4022, hydrogen peroxide zone 4023, and alkali adjustment zone 4024 is equipped with a stirring device 4025, which includes a stirring motor 40251 and stirring blades 40252. Furthermore, the acidification zone 4021 is equipped with a physicochemical inlet pipe 401 to introduce incoming water. Multiple partitions 4026 are arranged alternately within the chemical addition and stirring reaction zone 402 to divide the reaction zone into the aforementioned acidification zone 4021, ferrous salt zone 4022, hydrogen peroxide zone 4023, and alkali adjustment zone 4024.

[0062] like Figures 5-9 As shown, in this embodiment, the physicochemical reaction tank 4 includes an equipment area 405, and the dosing and stirring reaction zone 402, the physicochemical tank flocculation zone 403, the physicochemical tank sedimentation and separation zone 404, and the equipment area 405 are arranged in a rectangular shape. The physicochemical tank flocculation zone 403 and the physicochemical tank sedimentation and separation zone 404 are arranged side by side on one side of the equipment area 405, and the dosing and stirring reaction zone 402 is located on one side of the equipment area 405 and the physicochemical tank flocculation zone 403. The equipment area 405 is equipped with an acid tank 4051, an iron salt tank 4052, a hydrogen peroxide tank 4053, and an alkali tank 4054. The acid tank 4051 is equipped with an acid output pipeline 40511 and an acid adjustment zone 402. The system is interconnected as follows: Ferrous salt tank 4052 is equipped with a ferrous salt output pipe 40521 connected to ferrous salt zone 4022; hydrogen peroxide tank 4053 is equipped with a main hydrogen peroxide output pipe, from which multiple hydrogen peroxide output pipes 40531 branch off, each connected to a corresponding hydrogen peroxide zone 4023; alkali tank 4054 is equipped with an alkali output pipe 40541 connected to alkali adjustment zone 4024; a first pH meter 40221 is installed at the wastewater inlet of ferrous salt zone 4022 for real-time monitoring of wastewater pH; and a second pH meter 40241 is installed at the outlet of alkali adjustment zone 4024 for real-time monitoring of output water pH. These pH meters are commercially available products. Each of the above output pipes is equipped with a feed pump and a flow meter for controlling the addition of the corresponding materials.

[0063] like Figures 5-9 As shown, in this embodiment, the flocculation zone 403 of the physicochemical tank includes multiple triangular folded plate flocculation zones 4031 near the dosing and stirring reaction zone 402 and multiple straight plate flocculation zones 4032 near the sedimentation and separation zone 404 of the physicochemical tank, wherein... Figure 7 As shown, multiple flow channel baffles 40311 are staggered inside the triangular folded plate flocculation zone 4031 to form the first water flow channel, and triangular folded plate parts 40312 are provided on the flow channel baffles 40311. This allows the cross-sectional area of ​​the water flow to vary, thereby causing fluctuations in the water flow velocity. The continuous mutual impact of the water flows accelerates the dissolution reaction of the flocculant. Figure 5As shown, this embodiment includes two triangular folded plate flocculation zones 4031. The only difference between the two is the spacing of the flow channel baffles 40311. The second triangular folded plate flocculation zone 4031 has increased baffle spacing, which increases the cross-sectional area of ​​the water flow in this area, reduces the overall water flow velocity, and is more conducive to the flocculation reaction. Figure 8 As shown, multiple straight plates 40321 are staggered within the straight plate flocculation zone 4032 to form a second water flow channel. The straight plates 40321 reduce fluctuations in water flow velocity, and the water flow remains vertical. The distance between the partitions in this zone is larger, resulting in a more stable water flow. Figure 5 As shown, in this embodiment, there are two straight plate flocculation zones 4032, and the tail end of the second straight plate flocculation zone 4032 near the sedimentation separation zone 404 of the physicochemical tank is provided with a flocculation effluent transition section 40322 without straight plates 40321 to ensure that the water flow can flow smoothly into the sedimentation separation zone 404 of the physicochemical tank.

[0064] like Figures 7-8 As shown, each flocculation zone 403 of the physicochemical tank is equipped with a flocculation zone sludge pipe 4036 on its lower side, such as... Figure 5 As shown, each flocculation zone sludge pipe 4036 is connected to a flocculation zone main sludge pipe, which is connected to a flocculation zone sludge pump 4035 via a pipeline. The bottom sludge of the entire physicochemical tank flocculation zone 403 is discharged through the action of the flocculation zone sludge pump 4035.

[0065] like Figure 5 As shown, in this embodiment, the equipment area 405 is further equipped with a flocculation dosing device 4034, wherein the flocculation dosing device 4034 is equipped with a flocculation dosing pipe 4033 that connects to the flocculation zone near the dosing and stirring reaction zone 402 in the flocculation zone 403 of the physicochemical tank. This embodiment includes two flocculation dosing devices 4034, each equipped with a dosing pump, one of which adds PAC reagent and the other adds PAM reagent.

[0066] like Figures 5-9 As shown, in this embodiment, the physicochemical sedimentation separation zone 404 includes an inlet zone 4041, a sedimentation zone 4042, a scum channel 4043, a clear water channel 4044, and a residue zone 4045 arranged sequentially along the water flow direction. The flocculation zone 403 of the physicochemical tank, near the sedimentation separation zone 404, has its tail end connected to the inlet zone 4041. A physicochemical effluent main pipe 406 is provided on one side of the clear water channel 4044, connecting to the hydrolysis tank 5. The equipment area 405 also includes a dissolved air tank 4046, with its input end connected to the clear water channel 4044 via a dissolved air tank inlet pipe 40461, and its output end connected to the inlet zone 4041 via a dissolved air tank return pipe 40462.

[0067] like Figure 9 As shown, in this embodiment, the water inlet area 4041 of the sedimentation separation zone 404 of the physicochemical tank includes a first water inlet chamber 40411, a second water inlet chamber 40413, and a contact transition chamber 40415. The flocculation zone of the flocculation zone 403 of the physicochemical tank near the sedimentation separation zone 404 of the physicochemical tank is connected to the first water inlet chamber 40411. The first water inlet chamber 40411 and the second water inlet chamber 40413 are connected through a first connecting hole 40412 at the upper end of the partition wall. The second water inlet chamber 40413 and the contact transition chamber 40415 are connected through a second connecting hole 40414 at the lower end of the partition wall. The upper part of the contact transition chamber 40415 is connected to the sedimentation zone 4042. The bottom of the contact transition chamber 40415 is provided with a release head 40463 connected to the return water pipe 40462 of the dissolved air tank. Dissolved air tank 4046 draws water from clear water channel 4044 and introduces gas through air inlet pipe to form dissolved air water in the tank. Then, it is released in contact transition room 40415 through dissolved air tank return water pipe 40462 and release head 40463. In this way, dissolved air water and wastewater mix together and enter sedimentation zone 4042. Heavier sludge and other materials can fall more easily to the bottom of sedimentation zone 4042, while relatively lighter scum and other materials can float more easily and flow into scum channel 4043, thus achieving the effect of flotation and settling tank. This solves the problem of floating sludge in advanced oxidation sedimentation tanks of similar projects, and also eliminates the need for aeration section.

[0068] like Figure 5 and Figure 9 As shown, the output end of the sedimentation zone 4042 is connected to the clear water channel 4044 via a clear water pipe 40441. A movable sludge scraper 4047 is provided at the upper end of the sedimentation zone 4042, and a sludge hopper 4048 is provided at the bottom of the sedimentation zone 4042 near the inlet water zone 4041. The sludge scraper 4047 moves back and forth in the sedimentation zone 4042, scraping the sludge and other materials from the bottom of the pool into the sludge hopper 4048 on one hand, and scraping the scum into the scum channel 4043 on the other hand. The scum channel 4043 is provided with a scum discharge pipe 40431 connected to the residue zone 4045. The sludge scraper 4047 is a technology known in the art and is a commercially available product. Additionally, as shown... Figure 5 As shown, the residue zone 4045 is equipped with a first sludge pump 40451 for discharging sludge from the zone, such as... Figure 9 As shown, a second sludge pump 40416 is installed below the first inlet chamber 40411 of the inlet area 4041, and the sludge in the sludge hopper 4048 is discharged through the second sludge pump 40416. Figure 5 As shown, a physical and chemical sludge main pipe 407 is provided outside the sedimentation and separation zone 404 of the physical and chemical tank, and the sludge pump 4035, the first sludge pump 40451 and the second sludge pump 40416 of the flocculation zone are respectively connected to the physical and chemical sludge main pipe 407 through pipelines to achieve sludge discharge.

[0069] like Figures 10-11As shown, in this embodiment, the biological inlet area 601 is connected to the biological inlet pipe 6011, and both sides of the biological inlet area 601 are provided with biological inlet channels 6012. The biological inlet channel 6012 is provided with a pre-anoxic zone inlet 6013 connected to the corresponding pre-anoxic zone 6021 and an anaerobic zone inlet 6014 connected to the corresponding anaerobic zone 6022. The axes of the pre-anoxic zone inlet 6013 and the anaerobic zone inlet 6014 are perpendicular, and the axis of the anaerobic zone inlet 6014 is perpendicular to the direction of water flow, which can impact and stir the mud and water to quickly disperse it.

[0070] like Figures 10-11 As shown in this embodiment, the anoxic zone 6023 can be set up with multiple anoxic zones as needed. In addition, the anaerobic zone 6022 and each anoxic zone are equipped with a submersible mixer 606, which is a commercially available product.

[0071] like Figures 10-13 As shown, in this embodiment, the external return sludge well 604 is divided into a sludge inlet chamber and a drive chamber by a sludge well partition wall 6044. The sludge inlet chamber is equipped with an external return sludge pipe 6041 connected to the secondary sedimentation tank system for inputting externally returned sludge. The lower end of the sludge well partition wall 6044 has a partition wall opening 60441 connecting the sludge inlet chamber and the drive chamber. The drive chamber is equipped with two sets of external return pump sets 6043, which are respectively connected to the input end of the corresponding external return channel 603. The externally returned sludge is driven into the external return channel 603 by the external return pump sets 6043. The sludge well partition wall 6044 can block and retain externally flowing sludge, facilitating control of the sludge input amount. Figures 10-13 As shown, in this embodiment, the external return pump group 6043 includes multiple external return sludge pumps 60431, and the external return sludge pumps 60431 are provided with external sludge lifting pipes 60432 that are connected to the corresponding external return channel 603. The external return sludge well 604 is provided with a sludge discharge pipe 6042 on one side for emptying the sludge in the well. The sludge discharge pipe 6042 is connected to the emptying sludge pump located in the well.

[0072] like Figure 10 and Figures 14-15 As shown, in this embodiment, an air channel 60533 in a U-shape is provided on any aerobic zone of the outer pool group 605, and a closed air pipe 6053 is provided inside the air channel 60533. A biological tank aeration pipe 60532 is provided on both sides of the air pipe 6053, and the two biological tank aeration pipes 60532 extend to different aerobic zones respectively. An air input pipe 60531 is provided on one side of the air pipe 6053 and connected to a blower.

[0073] like Figure 10 and Figures 15-16As shown, in this embodiment, the input end of the internal return channel 607 is provided with an internal return riser pipe 6071, which is connected to the corresponding side of the biological treatment tank outlet well 609. The biological treatment tank outlet well 609 is provided with an outlet partition wall 6092. An internal return pump 60711 is provided inside the outlet partition wall 6092 and connected to the bottom end of the internal return riser pipe 6071. The height of the outlet partition wall 6092 inside the biological treatment tank outlet well 6099 is lower than the well opening. This allows the outlet partition wall 6092 to block sludge in the water without affecting the water outlet at the top. The internal return pump 60711 inside the outlet partition wall 6092 is used to input the return sludge water formed by nitrification liquid and biological sludge into the internal return channel 607 for recycling. The bottom end of the biological treatment tank outlet well 609 outside the outlet partition wall 6092 is provided with a biological treatment tank outlet pipe 6091. Additionally, as shown... Figure 10 As shown in this embodiment, the innermost aerobic zone 6051 is provided with a drain pipe 608 at the end away from the effluent well 609 of the biochemical tank for draining the wastewater in the tank.

[0074] like Figures 17-24 As shown, in this embodiment, the secondary sedimentation tank system includes a distribution well 7 and multiple secondary sedimentation tanks 8. The distribution well 7, from the inside out, is provided with a central sludge chamber 707, a distribution well inlet chamber 708, and a distribution well outlet chamber 709. The upper ends of the distribution well inlet chamber 708 and the distribution well outlet chamber 709 are connected by a water passage 711. Each secondary sedimentation tank 8 is provided with a secondary sedimentation tank separation chamber 806, and a single-pipe sludge suction machine 803 is installed within the secondary sedimentation tank separation chamber 806. The upper end of the single-pipe sludge suction machine 803 is provided with a rotatable scum scraper 8031. Furthermore, the free end of the scum scraper 8031 ​​is provided with a scum baffle 811. The upper inner wall of the secondary sedimentation tank separation chamber 806 is provided with a secondary sedimentation tank outlet channel 802 and a secondary sedimentation tank inlet channel 801 sequentially from the inside to the outside. The bottom of the secondary sedimentation tank inlet channel 801 is provided with a water distribution hole 8012 communicating with the secondary sedimentation tank separation chamber 806. Water in the upper part of the secondary sedimentation tank separation chamber 806 overflows into the secondary sedimentation tank outlet channel 802 through the gaps in the scum baffle 811. The water in the secondary sedimentation tank outlet channel 802 is discharged into the next process. Additionally, as... Figure 19 As shown, the bottom end of the water inlet chamber 708 of the water distribution well 7 is provided with a wastewater pipe 701 for the biological treatment tank, and the bottom end of the water outlet chamber 709 of the water distribution well is provided with multiple drainage pipes, wherein the drainage pipes are respectively connected to the secondary sedimentation tank inlet channel 801 in the corresponding secondary sedimentation tank 8, such as... Figure 20 As shown, the bottom of the central sludge chamber 707 is provided with a biological treatment tank return sludge pipe 702 and multiple sludge inlet pipes. The bottom of the secondary sedimentation tank separation chamber 806 is provided with a secondary sedimentation tank sludge return pipe 805. One end of the secondary sedimentation tank sludge return pipe 805 is connected to the single-pipe sludge suction machine 803, and the other end is connected to the corresponding sludge inlet pipe at the bottom of the central sludge chamber 707.

[0075] like Figures 17-21As shown, in this embodiment, the water distribution well 7 is connected to two secondary sedimentation tanks 8. The bottom end of the central sludge chamber 707 is provided with a first sludge inlet pipe 703 and a second sludge inlet pipe 705, which are respectively connected to the secondary sedimentation tank sludge return pipe 805 in the corresponding secondary sedimentation tank 8. The bottom end of the water distribution well outlet chamber 709 is provided with a first water distribution well drain pipe 704 and a second water distribution well drain pipe 706, which are respectively connected to the secondary sedimentation tank inlet channel 801 in the corresponding secondary sedimentation tank 8. The secondary sedimentation tank inlet channel 801 is provided with a secondary sedimentation tank inlet pipe 8011, which is connected to the corresponding drain pipe. Additionally, as shown... Figure 19 As shown, a water distribution well partition wall 710 is provided between the water distribution well inlet chamber 708 and the water distribution well outlet chamber 709 of the water distribution well 7, and the water passage 711 is formed at the upper end of the water distribution well partition wall 710.

[0076] like Figures 22-23 As shown in this embodiment, the lower side of the secondary sedimentation tank inlet channel 801 is provided with a first guide baffle 809 and a second guide baffle 810 to guide the water out of the water distribution hole 8012 to flow as obliquely downward as possible to the center of the bottom of the secondary sedimentation tank separation chamber 806. After the water reaches the center of the bottom of the secondary sedimentation tank separation chamber 806, it flows upward and reaches the top of the water surface. Then it radiates to the scum baffles 811 around the secondary sedimentation tank separation chamber 806.

[0077] like Figures 22-23 As shown, a water channel baffle 808 is provided between the secondary sedimentation tank inlet channel 801 and the secondary sedimentation tank outlet channel 802, and the height of the water channel baffle 808 is lower than the height of the pool opening of the secondary sedimentation tank 8. The height of the inner wall of the secondary sedimentation tank outlet channel 802 is lower than the height of the water channel baffle 808. An outlet triangular weir 8022 is provided on the inner wall of the secondary sedimentation tank outlet channel 802. Water in the upper end of the secondary sedimentation tank separation chamber 806 passes through the gap on the scum baffle 811 and then overflows into the secondary sedimentation tank outlet channel 802 through the outlet triangular weir 8022. Water level gauges and other detection elements can be installed in the secondary sedimentation tank inlet channel 801 and the secondary sedimentation tank outlet channel 802 as needed to detect the water level in the channel in real time.

[0078] like Figure 24 As shown, the width of the secondary sedimentation tank inlet channel 801 gradually narrows along the water flow direction, while the width of the secondary sedimentation tank outlet channel 802 gradually widens along the water flow direction. The spacing between adjacent water distribution holes 8012 gradually increases along the water flow direction. This invention achieves uniform water distribution around the channel through the above structure. Additionally, as shown... Figure 5 As shown, the secondary sedimentation tank outlet channel 802 is equipped with a secondary sedimentation tank outlet pipe 8021, which is connected to the pipeline of the next process.

[0079] In this embodiment, the single-tube sludge suction machine 803 is manufactured by Shenyang Daliao Environmental Machinery Equipment Co., Ltd. It has a scum scraper 8031 ​​on one side of its upper end and a truss 8032 on the other side. Simultaneously, a working bridge 8033 is provided at the upper end of the secondary sedimentation tank separation chamber 806, connecting to the single-tube sludge suction machine 803 for easy maintenance. When the scum scraper 8031 ​​rotates, it scrapes away the scum on the water surface. Figure 21 As shown, a scum discharge system 804 is provided on one side of the secondary sedimentation tank separation chamber 806. A scum scraper 8031 ​​scrapes scum into the scum discharge system 804 for removal. In this embodiment, the scum discharge system 804 includes a scum hopper 8041 and a scum well 8043. The scum hopper 8041 is located inside the secondary sedimentation tank separation chamber 806 and communicates with the scum well 8043 located outside the secondary sedimentation tank separation chamber 806 via a scum connecting pipe 8042. The scum well 8043 is equipped with a scum discharge pipe 8044. When the scum scraper 8031 ​​rotates past the scum hopper 8041, the scrapers and other components on the scum hopper 8041 cause scum to automatically fall into the scum hopper 8041 and be periodically cleaned and removed. The scum hopper 8041 is a technology known in the art. Figure 22 As shown, the sludge return pipe 805 of the secondary sedimentation tank is equipped with a sludge return control valve 8051 for controlling the opening and closing of the pipeline. This is a commercially available product. In addition, the bottom of the separation chamber 806 of the secondary sedimentation tank is equipped with a sludge discharge pipe 807 for emptying the sludge in the separation chamber 806 of the secondary sedimentation tank.

[0080] like Figures 25-31 As shown, in this embodiment, the flocculation and sedimentation unit 91 of the deep treatment system 9 includes a unit flocculation tank 912 and an inclined plate sedimentation tank 914. The unit flocculation tank 912 is provided with a first flocculation channel 9121, a second flocculation channel 9122, a third flocculation channel 9123, and a transition channel 9124 that are connected in sequence. Figure 27 As shown, the first flocculation channel 9121 is provided with a plurality of first baffles 91211 forming an up-and-down reciprocating flow channel, and adjacent first baffles 91211 are provided with triangular folded plate portions A91212 of the same height and opposite corner directions, as shown. Figure 28 As shown, the second flocculation channel 9122 is provided with multiple second baffles 91221 forming an up-and-down reciprocating flow channel, and adjacent second baffles 91221 are provided with triangular folded plate portions B91222 of the same height and with the same corner direction, as shown. Figure 29As shown, the third flocculation channel 9123 is provided with a plurality of straight baffles 91231 forming an up-and-down reciprocating flow channel, and the straight baffles 91231 are provided with through holes. This invention improves the flocculation treatment effect through the above-mentioned structural changes, thereby meeting the treatment needs of industrial parks with large amounts of wastewater and pollutants. In the first flocculation channel 9121, the cross-section of the reciprocating flow channel formed by the first baffle 91211 first decreases, then increases, and then decreases again, thus accelerating the water flow disturbance and improving the reaction efficiency between the reagent and the wastewater. In the second flocculation channel 9122, the cross-section of the water passage formed by the second baffle 91221 is equal, but the flow direction is oblique reciprocating. This flow pattern reduces the flow velocity fluctuation compared to the first flocculation channel 9121, but meets the reaction requirements. In the third flocculation channel 9123, the cross-section of the water passage is equal and the flow direction is vertical. At the same time, the through holes on the straight plate baffle 91231 allow a small amount of water to pass through, further reducing the water flow fluctuation. Finally, the flocculated water flows smoothly into the inclined plate sedimentation tank 914 after passing through the transition channel 9124.

[0081] like Figure 26 As shown, in this embodiment, the first flocculation channel 9121, the second flocculation channel 9122, the third flocculation channel 9123, and the transition channel 9124 are arranged in parallel. The head end of the first flocculation channel 9121 is connected to the regulating channel lift pipe 9112, and its tail end is connected to the head end of the second flocculation channel 9122. The tail end of the second flocculation channel 9122 is connected to the head end of the third flocculation channel 9123, and the tail end of the third flocculation channel 9123 is connected to the transition channel 9124. Through the above structural design, this invention can achieve reciprocating bending flow of water in the horizontal direction, and combined with the reciprocating bending flow of water in each individual flocculation channel in the vertical direction, thereby further improving the reaction efficiency between the reagent and the wastewater.

[0082] like Figure 31 As shown, in this embodiment, the transition channel 9124 is divided into a transition inlet chamber and a transition outlet chamber by a weir 91241. The height of the weir 91241 is lower than the height of the inlet of the unit flocculation tank 912. The transition inlet chamber is connected to the third flocculation channel 9123, and the water in the transition inlet chamber passes over the weir 91241 and enters the transition outlet chamber. A water-passing wall 913 is provided between the transition outlet chamber and the inclined plate sedimentation tank 914, and a water-passing hole 9131 is provided at the lower part of the water-passing wall 913 to connect the transition outlet chamber and the inclined plate sedimentation tank 914. In addition, the bottom of the transition outlet chamber is a slope, and the lower end of the slope is located below the water-passing hole 9131.

[0083] like Figures 27-29 and Figure 31As shown, in this embodiment, the bottom of the first flocculation channel 9121, the bottom of the second flocculation channel 9122, the bottom of the third flocculation channel 9123, and the bottom of the transition inlet chamber of the transition channel 9124 are all provided with flocculation tank sludge hoppers 9126 and flocculation tank sludge discharge pipes 9125, and the lower end of each flocculation tank sludge hopper 9126 is connected to the corresponding flocculation tank sludge discharge pipe 9125. The sediment in each flocculation channel and the transition inlet chamber of the transition channel 9124 falls into the flocculation tank sludge hopper 9126 and is discharged through the flocculation tank sludge discharge pipe 9125.

[0084] like Figures 30-31 As shown, in this embodiment, the inclined plate sedimentation tank 914 is provided with a sedimentation tank sludge hopper 9145, a water distribution area 9143, an inclined plate area 9141, and a unit water collection tank 9142, arranged sequentially from bottom to top. The lower end of the sedimentation tank sludge hopper 9145 is connected to a sedimentation tank sludge discharge pipe 9144 located at the bottom of the inclined plate sedimentation tank 914. The water distribution area 9143 is connected to the transition channel 9124. The inclined plate area 9141 is provided with multiple inclined plates arranged at equal intervals. Wastewater enters the water distribution area 9143 from the transition channel 9124 and flows upward into the inclined plate area 9141, and then... The water flows upwards through the gaps between adjacent inclined plates, and the sludge and impurities in the water slide down the inclined plates and eventually fall into the sedimentation tank sludge hopper 9145. Water passing through the inclined plate area 9141 overflows into the upper unit collection tank 9142, which is connected to a connecting channel 915 located outside the inclined plate sedimentation tank 914. The connecting channel 915 is connected to the filter inlet channel 921 on the input side of the grit filter 92. A connecting control valve plate 9151 is provided between the connecting channel 915 and the filter inlet channel 921; this is a commercially available product. Additionally, as... Figure 30 As shown, the inclined plate sedimentation tank 914 is equipped with a backwashing air pipe 9146, which is located below the inclined plate area. It is used to periodically impact the sludge accumulated on the inclined plate to open the gap between adjacent inclined plates.

[0085] like Figure 31As shown in this embodiment, the sedimentation filter 92 is provided with, from bottom to top, a sedimentation zone 928, a filtration device 924, a quartz sand packing zone 926, a water distribution pipe 923, and a water outlet trough 925. The water distribution pipe 923 is connected to the inlet channel 921, and a connecting pipe is provided on the lower side of the water distribution pipe 923 to connect to the filtration device 924. The filtration device 924 has a filtration outlet surface 9241 on its upper side and a sedimentation outlet on its lower side. Water in the water distribution pipe 923 enters the filtration device 924 through the connecting pipe, and the filtered water rises from the filtration outlet surface 9241 and... Water flows upwards through the quartz sand packing zone 926, where suspended solids are trapped by the quartz sand packing. Clean water overflows into the upper filter outlet trough 925, which is connected to the filter outlet channel 922. The impurities filtered by the filtration device 924 fall into the filter sedimentation zone 928 through the lower sedimentation outlet. Filter baffles are installed between each filtration device 924 and between the filtered water outlet surface 9241 and the sedimentation outlet to prevent impurities in the sedimentation zone 928 from rising into the packing zone. The filtration device 924 is a commercially available product; in this embodiment, it is manufactured by Shenyang Daliao Environmental Machinery Equipment Co., Ltd. Additionally, a control valve 9231 controls the flow of water through the filter distribution pipe 923, and cone-shaped anti-accumulation fixing piles 927 surround the filtration device 924 to prevent packing accumulation.

[0086] like Figures 32-34As shown, in this embodiment, the ozone contact tank 11 has an inlet system at one end and an ozone tank outlet channel 114 at the other end. The ozone contact tank 11 has an equipment cavity in the middle and ozone tank systems 112 on both sides. The ozone tank system 112 includes an ozone reaction tank 1121 and a transition tank 1122 that are arranged alternately and connected sequentially. Inside the ozone reaction tank 1121, from top to bottom, there is an ozone tank water distribution chamber 11211, a catalyst packing layer 1123, and an ozone tank aeration chamber 11212. The ozone tank water distribution chamber 1121 in the head ozone reaction tank 1121 is connected to the inlet system, while the ozone tank water distribution chambers 11211 in the other ozone reaction tanks 1121 are connected to the transition tank 1122 on the input side. An ozone pool with an upper water-passing weir 1125 is provided. Each ozone reaction pool 1121 has an ozone pool aeration chamber 11212 and a transition pool 1122 on the output side with a pool body partition 1124 with a water-passing hole at the lower end. The upper end of the transition pool 1122 at the end is connected to the ozone pool outlet channel 114. The ozone pool aeration chamber 11212 is provided with a first backwash connecting pipe 11213. The transition pool 1122 is provided with a second backwash connecting pipe 11221. The ozone pool water distribution chamber 11211 is provided with a backwash outlet connecting pipe 11215. The first backwash connecting pipe 11213, the second backwash connecting pipe 11221 and the backwash outlet connecting pipe 11215 are all connected to the backwash pipeline system in the equipment cavity.

[0087] like Figures 32-34 As shown, in this embodiment, the water inlet system of the ozone contact tank 11 includes an ozone tank inlet pipe 111, an ozone tank inlet chamber 1111, and an ozone tank distribution chamber 1112. The ozone tank inlet pipe 111 is connected to the ozone tank inlet chamber 1111. The two ozone tank distribution chambers 1112 are respectively located on both sides of the ozone tank inlet chamber 1111 and are both connected to the ozone tank inlet chamber 1111. At the same time, a partition wall with a water hole at the upper end is provided between the ozone tank distribution chamber 1112 and the ozone tank distribution chamber 11211 of the corresponding side ozone contact tank 1121.

[0088] like Figure 33As shown, in this embodiment, the ozone pool water distribution chamber 11211 is equipped with a backwash water collection tank 11217, and the backwash water collection tank 11217 is connected to the backwash water outlet pipe 11215. During backwashing, the backwash water input from the first backwash water outlet pipe 11213 flows upward to flush the catalyst packing layer 1123, and then overflows directly into the backwash water collection tank 11217. In addition, the second backwash water outlet pipe 11221 in the remaining transition pools 1122 except for the final transition pool 1122... After the input backwash water flows upward and rinses, it overflows through the ozone pool weir 1125 into the upper end of the adjacent ozone reaction pool 1121 on the output side. It can also directly overflow into the backwash water collection tank 11217 at the upper end of the ozone reaction pool 1121 and be discharged away without continuing to sink onto the catalyst packing layer 1123. The backwash water input from the second backwash connecting pipe 11221 in the final transition pool 1122 flows upward and is discharged through the ozone pool outlet channel 114. At the same time, the ozone pool outlet channel 114 can also be rinsed.

[0089] like Figure 33 As shown, in this embodiment, the catalyst packing layer 1123 includes a granular catalyst layer 11231, a quartz sand support layer 11232, and a filter plate layer 11233 arranged sequentially from top to bottom. The catalyst packing layer 1123 is a technology known in the art.

[0090] like Figure 33 As shown, in this embodiment, the bottom of the aeration chamber 11212 is provided with an ozone tank aeration pipe 11214 connected to the ozone input pipe 11216, and an aeration disc is provided on the ozone tank aeration pipe 11214. An ozone distribution control system 1126 is provided at the upper end of the ozone contact tank 11 to control the ozone amount in each ozone reaction tank 1121. All ozone input pipes 11216 are connected to the ozone distribution control system 1126. The ozone distribution control system 1126 is a technology known in the art. In addition, multiple flushing branch pipes 11218 are provided on both sides of the first backwash connecting pipe 11213 to increase the water outlet area. The outlets of the flushing branch pipes 11218 all face downwards, which also allows for cleaning of the aeration discs on the ozone tank aeration pipe 11214.

[0091] like Figures 32-34As shown, in this embodiment, the backwashing pipeline system includes a backwashing inlet branch pipe 115, a backwashing outlet branch pipe 113, a backwashing inlet main pipe, and a backwashing outlet main pipe. The first backwashing connecting pipe 11213 and the second backwashing connecting pipe 11221 are respectively connected to the backwashing inlet branch pipe 115 on the corresponding side. The backwashing outlet connecting pipe 11215 is connected to the backwashing outlet branch pipe 113 on the corresponding side. The input end of each backwashing inlet branch pipe 115 is connected to the backwashing inlet main pipe, and a backwashing inlet pump 1151 is provided on the backwashing inlet main pipe. The output end of each backwashing inlet branch pipe 115 is connected to the backwashing outlet main pipe.

[0092] Other examples Figure 1 As shown, an intermediate lift tank 12 can be installed between the secondary sedimentation tank system and the advanced treatment system 9 as needed. Water from the secondary sedimentation tank system first flows into the intermediate lift tank 12, and then is pumped into the advanced treatment system 9 by a lift pump within the intermediate lift tank 12. The invention also includes an ozone and chlorination workshop 15 for providing ozone to the ozone contact tank 11 and for adding chlorine to the disinfection contact tank 10, and a sludge treatment system 14 connected to the distribution well 7, the advanced treatment system 9, and the biological treatment tank 6 to achieve sludge return and discharge. Sludge in the central sludge chamber 707 of the distribution well 7 is controlled by the sludge treatment system 14 to flow back into the external return sludge well 604 of the biological treatment tank 6. Sludge discharged from the advanced treatment system 9 is processed by the sludge treatment system 14 before being output. The advanced treatment system 9 is equipped with a chemical dosing room 13. The above structures, as well as the coarse screen tank 1, equalization tank 3, hydrolysis tank 5, and disinfection contact tank 10, are all technologies known in the art.

[0093] The working principle of this invention is as follows:

[0094] When this invention is in operation, without exceeding the limits of the device, such as Figure 1 As shown, wastewater first enters the coarse screen tank 1 for filtration, then enters the fine screen tank 21 of the rotary grit removal system 2 for filtration, and then passes through various cyclone grit removal devices 22 before exiting into the equalization tank 3, and then flowing into the physicochemical reaction tank 4. Alternatively, for industrial parks containing domestic wastewater, domestic wastewater with relatively more solid waste can enter the coarse screen tank 1 for grit removal, while industrial wastewater with relatively less solid waste can directly enter the equalization tank 3, and then be collected and flow into the physicochemical reaction tank 4.

[0095] like Figure 5 As shown, after the wastewater enters the physicochemical reaction tank 4, it first enters the chemical dosing and stirring reaction zone 402 to achieve Fenton oxidation reaction to improve the biodegradability of the wastewater. Then, it flows into the hydrolysis tank 5 after passing through the flocculation zone 403 and the sedimentation separation zone 404 of the physicochemical tank. After passing through the hydrolysis tank 5, it enters the biological treatment tank 6.

[0096] like Figure 10As shown, after the wastewater enters the biological treatment tank 6, it first enters the biological treatment tank inlet area 601, and then enters the biological treatment tank inlet channels 6012 on both sides. Part of the water in the biological treatment tank inlet channel 6012 enters the pre-anoxic zone 6021, and the other part enters the anaerobic zone 6022. At the same time, the sludge in the external return channel 603 also flows into the pre-anoxic zone 6021. Then the sludge and water flow sequentially through the anaerobic zone 6022, the anoxic section 6023, and the various aerobic zones of the outer tank group 605. Finally, it is discharged from the biological treatment tank effluent well 609 into the secondary sedimentation tank system. At the same time, the biological treatment tank effluent well 609 is connected to the internal return channel 607 through the internal return riser pipe 6071, so that the return sludge and water formed by nitrification liquid and biological sludge can be input into the internal return channel 607 for recycling.

[0097] like Figures 17-22 As shown, after entering the secondary sedimentation tank system, the wastewater first enters the inlet chamber 708 of the distribution well 7, then overflows through the upper water passage 711 into the outer outlet chamber 709 of the distribution well, and then flows into the secondary sedimentation tank inlet channel 801 of the corresponding secondary sedimentation tank 8 through various drainage pipes. Figures 22-23 As shown, water in the secondary sedimentation tank inlet channel 801 flows into the secondary sedimentation tank separation chamber 806 through various water distribution holes 8012. Then, water in the secondary sedimentation tank separation chamber 806 overflows from the gap of the upper scum baffle 811 into the secondary sedimentation tank outlet channel 802 and flows out into the deep treatment system 9. The sludge settled in the secondary sedimentation tank separation chamber 806 is sucked up by the single-pipe sludge suction machine 803 and flows into the central sludge chamber 707 of the water distribution well 7 through the secondary sedimentation tank sludge return pipe 805, and is uniformly returned to the biological treatment tank 6.

[0098] like Figures 25-31 As shown, after entering the deep treatment system 9, the wastewater flows out after passing through the flocculation sedimentation unit 91 and the grit filter 92 unit in sequence without exceeding the equipment. The flocculation sedimentation unit 91 includes multiple flocculation channels with baffles of different shapes to improve the reaction efficiency between the reagent and the wastewater. Then, the wastewater enters the inclined plate sedimentation tank 914 through the transition channel 9124, and then flows into the filtration device 924 through the connecting channel 915, the filter inlet channel 921, and the filter distribution pipe 923. The filtered water rises and is output through the quartz sand packing area 926 and the filter outlet trough 925. The sediment falls into the filter sedimentation area 928 and is discharged into the ozone contact tank 11.

[0099] like Figures 32-34As shown, wastewater enters the ozone contact tank 11 and flows into the ozone tank system 112 on both sides. Considering the complex composition of the wastewater and the strong selectivity of the reaction between ozone and organic matter, the reaction dosage and time are further increased. Therefore, the ozone tank system 112 is designed to include an alternating structure of ozone reaction tank 1121 and transition tank 1122. This ensures sufficient ozone oxidation reaction time, while the transition tank 1122 can also play an auxiliary role in sedimentation. The backwash water from the ozone contact tank 11 can directly rinse the catalyst packing layer 1123 and be discharged through the backwash outlet pipe 11215, without causing suspended solids residue. Finally, the effluent from the ozone contact tank 11 flows through the disinfection contact tank 10 and is discharged.

[0100] This invention can also achieve equipment bypassing depending on the implementation situation, thereby meeting the treatment requirements of different types of industrial parks with different levels of pollution. Specifically, the effluent from the rotary grit chamber 2 can directly bypass the equalization tank 3, physicochemical reaction tank 4, and hydrolysis tank 5 into the biological treatment tank 6; alternatively, it can bypass the equalization tank 3, physicochemical reaction tank 4, hydrolysis tank 5, and the distribution well 7 and secondary sedimentation tank 8 of the sedimentation system before directly entering the deep treatment system 9. This is the first layer of bypass pipeline control. However, if... Figure 31 As shown, the wastewater from the deep treatment system 9 can bypass the flocculation and sedimentation unit 91 through the first unit bypass pipe 9113 and directly enter the grit chamber 92, or it can bypass the flocculation and sedimentation unit 91 and the grit chamber 92 through the second unit bypass pipe and directly enter the next process. This is the second layer of bypass control.

[0101] The related equipment of this invention is designed in multiple sets to meet the needs of large-volume water treatment. For example, the rotary grit removal system 2 is equipped with multiple vortex grit removal devices 22, the biological treatment tank 6 is equipped with an inner tank group 602 and an outer tank group 605 on both sides, the secondary sedimentation tank system is equipped with multiple secondary sedimentation tanks 8, the ozone contact tank 11 is equipped with an ozone tank system 112 on both sides, etc., so as to meet the needs of large-volume water treatment.

Claims

1. An integrated wastewater treatment system for multiple water types in industrial parks, characterized in that: The system comprises, in series, a coarse screen tank (1), a rotating grit chamber (2), an equalization tank (3), a physicochemical reaction tank (4), a hydrolysis tank (5), a biological tank (6), a secondary sedimentation tank system, a deep treatment system (9), an ozone contact tank (11), and a disinfection contact tank (10). The physicochemical reaction tank (4) includes, in series, a dosing and stirring reaction zone (402), a physicochemical flocculation zone (403), and a physicochemical sedimentation separation zone (404). The dosing and stirring reaction zone (402) includes, in series, an acidification zone (4021), a sub-acidification zone (4022), and a semi-acidification zone (4023). The tank consists of an iron salt zone (4022), a hydrogen peroxide zone, and an alkali adjustment zone (4024). The acid adjustment zone (4021) is connected to the equalization tank (3), and the alkali adjustment zone (4024) is connected to the flocculation zone (403) of the physicochemical tank. The sedimentation separation zone (404) of the physicochemical tank is connected to the hydrolysis tank (5). The biological tank (6) has a biological tank inlet zone (601) connected to the hydrolysis tank (5) at one end and an external return sludge well (604) at the other end. The biological tank (6) has an inner tank group (602) and an outer tank group (605) on both sides. The inner tank group is located in the middle of the biological tank (6). Group (602) includes a pre-anoxic zone (6021), an anaerobic zone (6022), and an anoxic section (6023) connected in sequence. The pre-anoxic zone (6021) and the anaerobic zone (6022) are connected to the inlet area (601) of the biological treatment tank through corresponding inlets. The outer tank group (605) includes multiple aerobic zones connected end to end in sequence. The head of the innermost aerobic zone (6051) is connected to the end of the corresponding anoxic section (6023). The end of the outermost aerobic zone (6052) is provided with a biological treatment tank effluent well (609) and a secondary sedimentation tank. The water distribution well (7) in the pool system is connected, and two external return channels (603) are provided between the two inner pool groups (602). The input end of the external return channel (603) is connected to the external return sludge well (604), and the output end is connected to the pre-anoxic zone (6021) on the corresponding side. An internal return channel (607) is provided between the inner pool group (602) and the outer pool group (605) on the same side. The input end of the internal return channel (607) is connected to the effluent well (609) of the corresponding biological tank on the corresponding side, and the output end is connected to the head end of the anoxic section (6023) on the corresponding side. The ozone contact tank (11) is equipped with an inlet system at one end and an ozone tank outlet channel (114) at the other end. The ozone contact tank (11) has an equipment cavity in the middle and ozone tank systems (112) on both sides. The ozone tank system (112) includes an ozone reaction tank (1121) and a transition tank (1122) that are arranged alternately and connected in sequence. The ozone reaction tank (1121) has an ozone tank water distribution chamber (11211), a catalyst packing layer (1123), and an ozone tank aeration chamber (11212) arranged from top to bottom inside. The ozone tank water distribution chamber (11211) in the ozone reaction tank (1121) at the head end is connected to the inlet system. The ozone tank water distribution chambers (11211) of the other ozone reaction tanks (1121) are connected to the transition tank (1122) on the input side by an upper passage. The ozone pool has a weir (1125) for water. Each ozone reaction pool (1121) has an ozone pool aeration chamber (11212) and a transition pool (1122) on the output side with a pool body partition (1124) with a water passage hole at the lower end. The upper end of the transition pool (1122) at the end is connected to the ozone pool outlet channel (114). The ozone pool aeration chamber (11212) is provided with a first backwash connecting pipe (11213). The transition pool (1122) is provided with a second backwash connecting pipe (11221). The ozone pool water distribution chamber (11211) is provided with a backwash outlet connecting pipe (11215). The first backwash connecting pipe (11213), the second backwash connecting pipe (11221), and the backwash outlet connecting pipe (11215) are all connected to the backwash pipeline system provided in the equipment cavity.

2. The integrated wastewater treatment system for multiple water types in industrial parks according to claim 1, characterized in that: The rotary grit settling system (2) includes a fine screen tank (21) and a vortex grit settling device (22). The fine screen tank (21) includes a fine screen tank inlet area (212) and a fine screen area (214), and a control gate (213) is provided between the fine screen tank inlet area (212) and the fine screen area (214). A rotating fine screen (215) is provided in the fine screen area (214), and a hanging plate (2152) is provided on the rotating fine screen (215). The rotating fine screen (215) is equipped with a screw conveyor (217) at the upper end and a fine screen flushing system (24) at the lower side. The output side of the fine screen area (214) is equipped with multiple connecting pipes (23) that are respectively connected to the corresponding vortex grit removal device (22). The vortex grit removal device (22) is equipped with an output pipe (221) on one side, and each output pipe (221) is connected to a main outlet pipe (222). The main outlet pipe (222) is connected to the regulating tank (3).

3. The integrated wastewater treatment system for multiple water types in industrial parks according to claim 1, characterized in that: The physicochemical reaction tank (4) includes an equipment area (405), and the dosing and stirring reaction area (402), the physicochemical tank flocculation area (403), the physicochemical tank sedimentation separation area (404) and the equipment area (405) are arranged in a rectangular shape. The physicochemical tank flocculation area (403) and the physicochemical tank sedimentation separation area (404) are arranged side by side on one side of the equipment area (405), while the dosing and stirring reaction area (402) is located outside the equipment area (405) and the physicochemical tank flocculation area (403). The equipment area (405) is equipped with an acid tank (4051), an iron salt tank (4052), a hydrogen peroxide tank (4053), and an alkali tank (4054). The acid tank (4051) is connected to the acid adjustment area (4021) through a pipeline. The iron salt tank (4052) is connected to the ferrous salt area (4022) through a pipeline. The hydrogen peroxide tank (4053) is connected to the hydrogen peroxide section through a pipeline. The alkali tank (4054) is connected to the alkali adjustment area (4024). A first pH meter (40221) is installed at the inlet of the ferrous salt area (4022), and a second pH meter (40241) is installed at the outlet of the alkali adjustment area (4024).

4. The integrated wastewater treatment system for multiple water types in industrial parks according to claim 1, characterized in that: The flocculation zone (403) of the physicochemical tank includes multiple triangular folded plate flocculation zones (4031) near the dosing and stirring reaction zone (402) and multiple straight plate flocculation zones (4032) near the sedimentation and separation zone (404) of the physicochemical tank. Each triangular folded plate flocculation zone (4031) has multiple staggered flow channel baffles (40311), and each flow channel baffle (40311) has a triangular folded plate section (40312). Multiple straight plates (40321) are interspersed in the flocculation zone (4032), and the end of the straight plate flocculation zone (4032) near the sedimentation separation zone (404) of the physicochemical tank is provided with a flocculation effluent transition section (40322) without straight plates (40321). Each triangular folded plate flocculation zone (4031) and each straight plate flocculation zone (4032) is provided with a flocculation zone sludge pipe (4036) for discharging sludge.

5. The integrated wastewater treatment system for multiple water types in industrial parks according to claim 1, characterized in that: The sedimentation and separation zone (404) of the physicochemical tank includes an inlet zone (4041), a sedimentation zone (4042), a scum channel (4043), a clear water channel (4044), and a residue zone (4045) arranged sequentially along the water flow direction. The inlet zone (4041) is connected to the flocculation zone (403) of the physicochemical tank. The output end of the sedimentation zone (4042) is connected to the clear water channel (4044) through a clear water pipe (40441). The clear water channel (4044) is connected to the hydrolysis tank (5) through a physicochemical effluent main pipe (406). Next, the scum channel (4043) is provided with a scum discharge pipe (40431) connected to the residue area (4045). In addition, the clear water channel (4044) is connected to the input end of the dissolved air tank (4046) through the dissolved air tank inlet pipe (40461). The inlet area (4041) is provided with a contact transition chamber (40415) connected to the sedimentation area (4042). The output end of the dissolved air tank (4046) is connected to the release head (40623) located in the contact transition chamber (40415) through the dissolved air tank return water pipe (40462).

6. The integrated wastewater treatment system for multiple water types in industrial parks according to claim 1, characterized in that: The biological inlet area (601) of the biological tank (6) is provided with biological inlet channels (6012) on both sides. The biological inlet channel (6012) is provided with a pre-anoxic zone inlet (6013) connected to the corresponding pre-anoxic zone (6021) and an anaerobic zone inlet (6014) connected to the corresponding anaerobic zone (6022). The axes of the pre-anoxic zone inlet (6013) and the anaerobic zone inlet (6014) are perpendicular, and the axis of the anaerobic zone inlet (6014) is perpendicular to the direction of water flow. In any aerobic zone of the outer pool group (605), there is a loop-shaped air channel (60533). The air channel (60533) is provided with a loop-shaped closed air pipe (6053). Biological tank aeration pipes (6053) are provided on both sides of the air pipe (6053). 532), and the aeration pipes (60532) of the two biological treatment tanks extend to different aerobic zones respectively; the external return sludge well (604) is divided into a sludge inlet chamber and a drive chamber by a sludge well partition wall (6044), wherein the sludge inlet chamber is provided with an external return sludge pipe (6041) connected to the secondary sedimentation tank system, and the drive chamber is provided with two sets of external return pump groups (6043), and the external return pump groups (6043) are respectively connected to the input end of the corresponding side external return channel (603); the biological treatment tank effluent well (609) is provided with an effluent partition wall (6092), and the effluent partition wall (6092) is provided with an internal return pump (60711) connected to the bottom end of the internal return lift pipe (6071) on the inner side, and the upper end of the internal return lift pipe (6071) is connected to the input end of the corresponding side internal return channel (607).

7. The integrated wastewater treatment system for multiple water types in industrial parks according to claim 1, characterized in that: The secondary sedimentation system includes a distribution well (7) and multiple secondary sedimentation tanks (8). The distribution well (7) is provided with a central sludge chamber (707), a distribution well inlet chamber (708), and a distribution well outlet chamber (709) from the inside out. The upper ends of the distribution well inlet chamber (708) and the distribution well outlet chamber (709) are connected by a water passage (711). The secondary sedimentation tanks (8) are provided with a secondary sedimentation tank separation chamber (806), and a single pipe is provided in the secondary sedimentation tank separation chamber (806). The sludge suction machine (803) is equipped with a scum scraper (8031) at its upper end. A scum baffle (811) is provided at the free end of the scum scraper (8031). The inner wall of the upper end of the secondary sedimentation tank separation chamber (806) is provided with a secondary sedimentation tank outlet channel (802) and a secondary sedimentation tank inlet channel (801) from the inside to the outside. The bottom of the secondary sedimentation tank inlet channel (801) is provided with a water distribution hole (8012) that communicates with the secondary sedimentation tank separation chamber (806). The secondary sedimentation tank separation chamber (806) is... Water in the upper part overflows into the secondary sedimentation tank outlet channel (802) through the gap in the scum baffle (811); the bottom of the water distribution well inlet chamber (708) is provided with a biological treatment tank water inlet pipe (701), and the bottom of the water distribution well outlet chamber (709) is provided with multiple drainage pipes, and the drainage pipes are respectively connected to the corresponding secondary sedimentation tank inlet channel (801); the bottom of the central sludge chamber (707) is provided with a biological treatment tank return sludge pipe (702) and multiple sludge inlet pipes; the secondary sedimentation tank is divided into The bottom of the cavity (806) is provided with a secondary sedimentation tank sludge return pipe (805), and one end of the secondary sedimentation tank sludge return pipe (805) is connected to a single-pipe sludge suction machine (803), and the other end is connected to the sludge inlet pipe corresponding to the bottom of the central sludge cavity (707); the width of the secondary sedimentation tank inlet channel (801) gradually narrows along the water flow direction, the width of the secondary sedimentation tank outlet channel (802) gradually widens along the water flow direction, and the spacing between adjacent water distribution holes (8012) gradually increases along the water flow direction.

8. The integrated wastewater treatment system for multiple water types in industrial parks according to claim 1, characterized in that: The rotary sedimentation system (2) has a bypass manifold (16) on its output side, and the bypass manifold (16) has a first bypass branch (1601) connected to the output pipeline of the hydrolysis tank (5) and a second bypass branch (1602) connected to the output pipeline of the secondary sedimentation tank system; the deep treatment system (9) includes a flocculation sedimentation unit (91) and a sedimentation filter (92) connected in sequence, wherein the flocculation sedimentation unit (91) has an regulating channel (9111) on its input side, and the flocculation sedimentation unit (91) and the sedimentation filter (92) are connected in series. The filter is provided with an inlet channel (921) and an outlet channel (922) on the outside of the grit filter (92). The regulating channel (9111) is connected to the secondary sedimentation tank system. The regulating channel (9111) is provided with a regulating channel lift pipe (9112) connected to the flocculation sedimentation unit (91), a first unit bypass pipe (9113) connected to the inlet channel (921), and a second unit bypass pipe connected to the outlet channel (922). The outlet channel (922) is connected to the ozone contact tank (11).

9. The integrated wastewater treatment system for multiple water types in industrial parks according to claim 8, characterized in that: The flocculation and sedimentation unit (91) includes a unit flocculation tank (912) and an inclined plate sedimentation tank (914). The unit flocculation tank (912) is provided with a first flocculation channel (9121), a second flocculation channel (9122), a third flocculation channel (9123), and a transition channel (9124) arranged in parallel and connected in sequence. The first flocculation channel (9121) is provided with a first baffle (91211) forming an up-and-down reciprocating flow channel. Adjacent first baffles (91211) are provided with baffles of the same height and opposite corner directions. The triangular folded plate section A (91212) is provided in the second flocculation channel (9122), and a second baffle (91221) is provided in the second flocculation channel (9122) to form an up-and-down reciprocating flow channel. Two adjacent second baffles (91221) are provided with triangular folded plate sections B (91222) of the same height and with the same angle direction. The third flocculation channel (9123) is provided with multiple straight baffles (91231) to form an up-and-down reciprocating flow channel, and the straight baffles (91231) are provided with through holes. The inclined plate sedimentation tank (914) is provided with sedimentation tanks arranged sequentially from bottom to top inside. The system includes a mud hopper (9145), a water distribution area (9143), an inclined plate area (9141), and a unit water collection trough (9142). The water distribution area (9143) is connected to the transition channel (9124). The inclined plate area (9141) has multiple inclined plates arranged at equal intervals. The unit water collection trough (9142) is connected to a connecting channel (915) located outside the inclined plate sedimentation tank (914). The connecting channel (915) is connected to the filter inlet channel (921) on the input side of the grit filter (92). The interior of the grit filter (92) consists of the following components from bottom to top: The filter includes a sedimentation zone (928), a filtration device (924), a quartz sand packing zone (926), a water distribution pipe (923), and an outlet trough (925). The water distribution pipe (923) is connected to the inlet channel (921), and a connecting pipe is provided on the lower side of the water distribution pipe (923) to connect to the filtration device (924). The filtration device (924) has a filter outlet surface (9241) on the upper side and a sedimentation outlet on the lower side. The outlet trough (925) is connected to the outlet channel (922).

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