A biochemical pool end suspended matter separation device

Abstract

This invention relates to the field of wastewater treatment technology and discloses a suspended solids separation device at the end of a biological treatment tank. The device includes a biological treatment tank, a support device, a high-capacity biological device, and a honeycomb packing device. The support device is fixed at the effluent end of the biological treatment tank. The high-capacity biological device includes packing wires and a central rope. The packing wires are evenly interwoven on the central rope, and the surface of the packing wires is uniformly distributed with indentations and fine burrs. The upper and lower ends of the central rope are respectively tied to the support device. The honeycomb packing device is composed of several single inclined plates bonded together and is supported and fixed by the support device. This invention can reduce the suspended solids in the effluent of the biological treatment tank by 97-99%, reduce the need for high sludge concentration in the biological treatment tank, reduce oxygen consumption and power consumption by 20%, and simultaneously reduce the amount of residual biological sludge. The suspended solids in the effluent of the secondary sedimentation tank are significantly reduced, alleviating the load on deep treatment and facilitating the reuse of reclaimed water and deep purification treatment.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a suspended solids separation device at the end of a biological treatment tank. Background Technology

[0002] Currently, water treatment methods include physical treatment and chemical treatment. Humans have been treating water for many years. Physical methods include using filter media with different pore sizes to remove impurities from the water through adsorption or blocking. Among adsorption methods, activated carbon is a more important one. Blocking methods involve passing water through filter media to prevent larger impurities from passing through, thereby obtaining cleaner water.

[0003] With the development of science and technology and the improvement of people's living standards, water treatment technology has higher requirements. Previous water treatment devices did not have solid-liquid separation devices, which made it difficult for people to treat water quickly and conveniently, affecting the work efficiency of staff. Therefore, a suspended solids separation device at the end of the biological treatment tank was proposed. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a suspended solids separation device at the end of a biological treatment tank. This invention provides a quick and convenient solution to the problems of existing biological treatment devices, such as large size, low treatment efficiency, limited performance, and lack of solid-liquid separation and odor purification functions. These problems lead to frequent expansions that waste unnecessary investment and resources. Furthermore, these devices not only fail to improve treatment efficiency quickly but also increase energy consumption and personnel requirements.

[0005] To achieve the above objectives, the technical solution of the present invention is: a suspended solids separation device at the end of a biological treatment tank, comprising a biological treatment tank, a support device, a high-capacity biological device, and a honeycomb packing device;

[0006] The support device is fixed at the effluent end of the biological treatment tank. The support device includes a main beam, a secondary beam, an upper suspension, and a lower pull frame arranged horizontally, and a vertical column. The lower end of the column is fixed to the bottom of the biological treatment tank. The main beam and secondary beam are fixedly connected to the column. Both ends of the main beam and secondary beam are fixed to the tank wall of the biological treatment tank. The upper suspension and lower pull frame are welded to the main beam and secondary beam respectively. A horizontal fixing frame is fixed on the top of the column.

[0007] The high-capacity biological device consists of several packing units, each including packing wires and a central rope. The packing wires are evenly interwoven on the central rope and radiate outwards from the periphery of the central rope, forming an overall cylindrical structure. The surface of the packing wires is evenly covered with indentations and fine burrs. The upper and lower ends of the central rope are respectively tied to the upper suspension and the lower pull frame. The packing units are easy and quick to install, facilitating interleaving and installation. They have a high density, which is beneficial for flocculating impurities in wastewater and for the deep degradation of pollutants.

[0008] The honeycomb packing device is made of several single inclined plates bonded together, with a honeycomb structure in cross-section and running vertically. The honeycomb packing device is located above the high-capacity biological device, evenly laid on the upper suspension, and compacted by the main pressure frame and the secondary pressure frame. The secondary pressure frame is fixed to the main pressure frame by U-bolts. The main pressure frame and the secondary pressure frame intersect laterally to form a grid, preventing the honeycomb packing device from floating.

[0009] Furthermore, it also includes a turbulence device, which comprises an aeration ring pipe, microbubble aeration discs, a baffle plate, and an outlet weir. The aeration ring pipe is located below the high-capacity biological device and is laid horizontally along the bottom of the biological treatment tank. The inlet of the aeration ring pipe extends outside the biological treatment tank and is connected to an air source. Several microbubble aeration discs are evenly distributed on the upper side wall of the aeration ring pipe and are connected to the aeration ring pipe. The baffle plate is located at the front end of the honeycomb packing device and fixed on a mounting frame. The upper end of the baffle plate... The effluent well of the biological treatment tank is located on the left side of the end of the tank, with the lower end lower on the left and the upper end higher on the right. The effluent weir is located at the top front end of the effluent well opening, with the upper end of the effluent weir higher than the liquid surface. This ensures that the sewage flows into the high-capacity biological device from the bottom of the baffle plate, then passes through the honeycomb packing device, and finally flows by gravity into the effluent well. The baffle plate and effluent weir guide the flow and prevent short-circuiting of sewage, thus increasing the purification area. The sludge concentration in the biological treatment tank is controlled by adjusting the aeration volume of the bottom aeration disc.

[0010] Furthermore, it also includes a reflux device, which comprises a reflux pump, a connecting pipe, and a porous pipe. The reflux pump is located outside the biological treatment tank. The connecting pipe is connected at both ends to the inlet of the reflux pump and the outlet of the porous pipe, respectively. The lower end of the porous pipe has several through holes. The porous pipe is located at the end of the biological treatment tank and at the bottom of the effluent zone. The reflux device can increase the sludge concentration in the reflux liquid and improve the biodegradation efficiency.

[0011] Furthermore, the preparation method of the high-capacity biological device packing monomer is as follows:

[0012] 1) Raw material filament preparation: Select corrosion-resistant, high-temperature resistant, and aging-resistant polyolefins or polyamides, and combine them with hydrophilic, adsorbent, and heat- and oxygen-resistant additives to form raw material filaments;

[0013] 2) Preparation of filler wires;

[0014] First, the raw filaments are drawn into a 550℃ electric furnace wire box for heating. At 10mm intervals, high-temperature pressure rollers are used. The raw filaments pass between two rollers, and the surface of the filaments melts upon contact with the high-temperature pressure rollers. They are then quickly drawn out to form long filaments, which are then cooled by cooling air.

[0015] Then, the yarn is deformed and the cooled long yarn is fed into a deep indenter for twisting, and the indented yarn semi-finished product is output.

[0016] Finally, the semi-finished filaments are softened and then subjected to an air jetting operation, which causes the blown-down parts of the semi-finished filaments to twist together, forming a network of dots on the surface of the semi-finished filaments, and the finished filler filaments are output.

[0017] 3) Twist the filler wires into the central rope to form a high-capacity biological device filler unit.

[0018] Furthermore, the polyolefin or polyamide is selected from one or more of polypropylene, polyethylene, polyvinyl chloride, and ABS resin.

[0019] The beneficial effects of this invention are:

[0020] 1) The suspended solids separation device at the end of the biological treatment tank of the present invention reduces the suspended solids (activated sludge) in the effluent by 97-99% compared with the biological treatment tank without the present invention, reduces the need for high sludge concentration in the biological treatment tank, reduces oxygen consumption and power consumption by 20%, and reduces the residual biological sludge at the same time. The suspended solids in the effluent of the secondary sedimentation tank are significantly reduced, which reduces the load on deep treatment and is conducive to the reuse of reclaimed water and deep purification treatment.

[0021] 2) The high-capacity biological device of this invention possesses high hydrophilicity and biocompatibility, enabling rapid biofilm formation and easy regeneration and detachment. Within the effective area, it can spread out three-dimensionally and uniformly, allowing for sufficient mixing and contact exchange between air, water, and the biofilm. The biofilm not only adheres evenly to each packing filament, maintaining good activity and variability in porosity, but also gains an increasingly larger specific surface area during operation. Its high porosity prevents clogging and clumping, ensuring efficient pollutant mass transfer while facilitating effective metabolism. It also boasts advantages such as long material lifespan and low cost, solving the problems of biological aging and lack of renewal under high biological density, as well as the issue of high-salt caking. It can be widely used as a biological packing material in biological contact oxidation ponds and hydrolysis acidification ponds.

[0022] 3) This invention can use the odorous gas generated by the sewage treatment device at the front end of the biological treatment tank as a gas source. After pressurization, it is input into the aeration ring pipe, and uniform microbubbles are generated by the microbubble aeration disc and enter the biological treatment tank. On the one hand, the odorous gas is treated by the high-capacity biological device, and on the other hand, the odorous gas is used to create turbulence in the sewage in the biological treatment tank, which accelerates the contact between the sewage and the high-capacity biological device and accelerates the mass transfer rate of pollutants, which is conducive to degradation. Thus, the purification capacity and efficiency of the biological treatment tank are comprehensively improved, and the odor emission is reduced. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the suspended solids separation device at the end of the biochemical tank of the present invention;

[0024] Figure 2 This is a diagram showing the aeration ring pipe layout of the suspended solids separation device at the end of the biochemical tank according to the present invention;

[0025] Figure 3 This is a schematic diagram of the packing unit structure of a high-capacity biological device;

[0026] Figure 4 This is a schematic diagram of the filler wire structure;

[0027] Figure 5 This is a schematic diagram of the cross-sectional structure of the honeycomb packing device;

[0028] Figure 6 This is a schematic diagram of a single inclined plate structure;

[0029] Figure 7 This is a bottom view of a porous pipe.

[0030] In the diagram: 1. Biological tank; 2. High-capacity biological device; 2-1. Packing wire; 2-1-1. Indentation; 2-1-2. Microburrs on the indentation; 2-2. Central rope; 3. Honeycomb packing device; 3-1. Inclined plate; 4. Main beam; 5. Sub-beam; 6. Column; 7. Upper suspension frame; 8. Lower support frame; 9. Aeration ring pipe; 10. Microbubble aeration disc; 11. Porous pipe; 12. Effluent well; 13. Connecting pipe; 14. Return pump; 15. Effluent weir; 16. Main pressure frame; 17. Sub-pressure frame; 18. U-bolt; 19. Fixing frame; 20. Water baffle; 21. Sludge catalysis equipment; 22. Through hole. Detailed Implementation

[0031] Example:

[0032] like Figures 1 to 7 As shown, a suspended solids separation device at the end of a biological treatment tank includes a biological treatment tank 1, a support device, a high-capacity biological device 2, a honeycomb packing device 3, a turbulence device, and a reflux device.

[0033] The support device is fixed at the outlet end of the biological treatment tank 1. The support device includes a main beam 4, a secondary beam 5, an upper suspension 7, and a lower pull frame 8 arranged horizontally, and a vertical column 6. The lower end of the column 6 is fixed to the bottom of the biological treatment tank 1. The main beam 4 and the secondary beam 5 are fixedly connected to the column 6. Both ends of the main beam 4 and the secondary beam 5 are fixed to the tank wall of the biological treatment tank 1. The upper suspension 7 and the lower pull frame 8 are respectively welded to the main beam 4 and the secondary beam 5. A horizontal fixing frame 19 is provided on the top of the column 6.

[0034] The high-capacity biological device 2 is composed of several packing units, with a height of 4.5 meters. Each packing unit includes packing wires 2-1 and a central rope 2-2. The packing wires 2-1 are evenly interwoven on the central rope 2-2 and are radially distributed around the central rope 2-2. The overall structure is cylindrical. The surface of the packing wires 2-1 is evenly distributed with indentations 2-1-1 and indentation microburrs 2-1-2. The upper and lower ends of the central rope 2-2 are respectively tied to the upper suspension 7 and the lower pull frame 8.

[0035] The honeycomb packing device 3 is composed of several single inclined plates 3-1 bonded together, with a height of 0.876 meters. A 0.5-meter clear water zone is reserved at the top of the honeycomb packing device 3. The cross-section has a honeycomb structure and is continuous from top to bottom. The honeycomb packing device 3 is located above the high-capacity biological device 2, evenly laid on the upper suspension 7, and compacted by the main pressure frame 16 and the secondary pressure frame 17. The secondary pressure frame 17 is fixed to the main pressure frame 16 by U-bolts 18. The main pressure frame 16 and the secondary pressure frame 17 are horizontally intersecting to form a grid. When sewage flows through the honeycomb packing device 3, it fully contacts and reacts with the packing, causing the sludge in the sewage to quickly flocculate and settle.

[0036] The turbulence device includes an aeration ring pipe 9, microbubble aeration discs 10, a baffle plate 20, and an outlet weir 15. The aeration ring pipe 9 is located below the high-capacity biological device 2 and is laid horizontally along the bottom of the biological tank 1. The inlet of the aeration ring pipe 9 extends out of the biological tank 1 and is connected to an air source. There are several microbubble aeration discs 10, which are evenly distributed on the upper side wall of the aeration ring pipe 9. The microbubble aeration discs 10 are connected to the aeration ring pipe 9. The baffle plate 20 is set at the front end of the honeycomb packing device 3 and fixed on the fixing frame 19. The upper end of the baffle plate 20 is 200mm above the liquid surface, and the lower end is lower on the left and higher on the right. The left end is 500mm from the bottom of the tank, and the right end is 1000mm from the bottom of the tank. The outlet well 12 of the biological tank 1 is set at the left end of the biological tank 1. The outlet weir 15 is set at the top front end of the outlet well 12, and the upper end of the outlet weir 15 is above the liquid surface. The gas source is the odorous gas generated by the sewage treatment device at the front end of the biological tank 1. After being pressurized, it is input into the aeration ring pipe 9, where it is generated by the microbubble aeration disc 10 and enters the biological tank 1. On the one hand, the odorous gas is treated by the high-capacity biological device 2, and on the other hand, the odorous gas is used to create turbulence in the sewage in the biological tank 1, which accelerates the contact between the sewage and the high-capacity biological device 2 and accelerates the mass transfer rate of pollutants, which is conducive to degradation. Thus, the purification capacity and efficiency of the biological tank 1 are comprehensively improved, and the odor emission is reduced.

[0037] The reflux device includes a reflux pump 14, a connecting pipe 13, and a porous pipe 11. The reflux pump 14 is located outside the biological treatment tank 1. The two ends of the connecting pipe 13 are connected to the inlet of the reflux pump 14 and the outlet of the porous pipe 11, respectively. The reflux pump 14 is connected to the inlet of the sludge catalysis device 21 outside the biological treatment tank 1, and the outlet of the sludge catalysis device 21 is connected to the inlet of the biological treatment tank 1. The lower end of the porous pipe 11 has several through holes 22. The porous pipe 11 is located at the end of the biological treatment tank 1, 200mm from the bottom of the tank. When the reflux pump 14 is started, the sludge at the bottom of the biological treatment tank 1 is sucked into the porous pipe 11 through the through holes 22, and then enters the sludge catalysis device 21 for catalytic treatment. After catalytic treatment, the sludge enters the front end of the biological treatment tank 1 for reflux and participates in the front end treatment of sewage.

[0038] The preparation method of the packing monomer of the high-capacity biological device 2 is as follows:

[0039] 1) Raw material yarn; 1000D-200F polypropylene industrial yarn from Xindike Monofilament Technology Co., Ltd., with a yarn diameter of 0.45.

[0040] 2) Preparation of filler wire 2-1;

[0041] First, the raw filaments are drawn into a 550℃ electric furnace wire box for heating. At 10mm intervals, high-temperature pressure rollers are used. The raw filaments pass between two rollers, and the surface of the filaments melts upon contact with the high-temperature pressure rollers. They are then quickly drawn out to form long filaments, which are then cooled by cooling air.

[0042] Then, the long, cooled filaments are fed into a deep indenter for twisting, and a semi-finished filament with indentations 2-1-1 is output, wherein the indentations 2-1-1 are dovetail-shaped.

[0043] Finally, the semi-finished filaments are softened and then subjected to an air jetting process. When the airflow blows onto the semi-finished filaments, the blown-down parts of the filaments twist together, forming network points on the surface of the semi-finished filaments, and the finished filler filaments 2-1 are output. Because of the presence of network points, the filler filaments 2-1 are not stretched too tightly, which can greatly improve the softness of the filler filaments 2-1, as well as improve the toughness and cohesion of the filler filaments 2-1. The structure of the filler filaments 2-1 is conducive to improving the adhesion of organisms and increasing the biomass carrying capacity.

[0044] 4) Twist the filler wire 2-1 into the central rope 2-2 to form the filler unit of the high-load biological device 2.

[0045] Electric heating wire box parameters:

[0046] The roller diameter is φ200mm, the heating wire diameter is φ1mm, the total power is 3000kw, the rotation speed is 250 rpm, and the raw material wire feeding speed is 500m / min.

[0047] The filler wire 2-1 has a diameter of Φ200mm and a length of 3200mm.

[0048] Application effects of the present invention:

[0049] Maximum water treatment capacity: 600m³ 3 / h, the capacity of biological tank 1 is 12000m³. 3 The high-capacity biological device 2 has an assembly volume of 9000m³. 3 The high-capacity biological device 2 has a reaction time of 15 hours; the honeycomb packing device 3 has an assembly capacity of 60 m³. 2 The residence time of the honeycomb packing device 3 is 5 to 10 minutes.

[0050] a. After applying this invention, the concentration of suspended solids (activated sludge) in the effluent is reduced from the conventional 3000-5000 mg / L to 50-100 mg / L. The suspended solids in the effluent are reduced by 97-99% compared to the biological treatment tank without this invention. This reduces the need for high sludge concentrations in the biological treatment tank, reduces oxygen consumption and power consumption by 20%, and also reduces the amount of residual biological sludge. The suspended solids in the effluent from the secondary sedimentation tank are significantly reduced, alleviating the load on deep treatment and facilitating the reuse of reclaimed water and deep purification treatment.

[0051] b. After applying this invention, the effluent COD concentration is reduced from the conventional 300-500 mg / L to 30-50 mg / L, the purification capacity is increased by more than 50%, the system's resistance to shock is improved, and the effluent stability is enhanced. Compared to biological treatment tanks with equivalent purification capacity, the footprint is reduced by 50%.

[0052] c. In this invention, odorous gases are used as a gas source and are absorbed, dissolved, and purified through aeration, achieving an odor removal rate of up to 50%.

[0053] d. After the application of this invention, the specific resistance of activated sludge decreases and the settling velocity is significantly accelerated, thereby improving dewatering efficiency and reducing dewatering consumption;

[0054] e. When biological systems are subjected to shocks after the application of this invention, there is no need to use large amounts of nutrients, and the recovery speed is fast.

[0055] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications may be made without departing from the technical solutions described in the claims.

[0056] In the description of this invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

Claims

1. A biochemical tank end suspended matter separation device comprising a biochemical tank (1), characterized in that: It also includes support device, high load biological device (2), honeycomb filler device (3); The support device is fixed at the water outlet end of the biochemical tank (1), and the support device includes horizontally intersected main beams (4), auxiliary beams (5), upper suspensions (7), and lower pull frames (8), and vertically arranged columns (6), the lower end of the column (6) is fixed on the bottom of the biochemical tank (1), the main beam (4) and the auxiliary beam (5) are fixedly connected with the column (6), both ends of the main beam (4) and the auxiliary beam (5) are fixed on the tank wall of the biochemical tank (1), the upper suspension (7) and the lower pull frame (8) are welded on the main beam (4) and the auxiliary beam (5) respectively, and the top of the column (6) is provided with a horizontal fixing frame (19); The high load biological device (2) is composed of a plurality of filler monomers, the filler monomers include filler filaments (2-1) and a center rope (2-2), the filler filaments (2-1) are uniformly inserted on the center rope (2-2), the filler filaments (2-1) are radially distributed along the periphery of the center rope (2-2), and the whole is a cylindrical structure, the surface of the filler filaments (2-1) is uniformly distributed with indentations (2-1-1) and indentation micro burrs (2-1-2), and the upper and lower ends of the center rope (2-2) are tied to the upper suspension (7) and the lower pull frame (8) respectively; The honeycomb filler device (3) is formed by bonding a plurality of single inclined plates (3-1), and the cross section is a honeycomb structure, which is through from top to bottom, the honeycomb filler device (3) is located above the high load biological device (2), is uniformly laid on the upper suspension (7), and is compacted by the main pressing frame (16) and the auxiliary pressing frame (17), and the main pressing frame (16) and the auxiliary pressing frame (17) are transversely and crossly connected; The preparation method of the high load biological device (2) filler monomer is: 1) raw material filament preparation; selecting corrosion-resistant, high-temperature-resistant and aging-resistant polyolefin or polyamide, and adding hydrophilic, adsorbing and heat-resistant oxygen-resistant additives to form a raw material filament; 2) preparation of filler filaments (2-1); Firstly, the raw material filaments are sent into a 550 DEG C electric furnace filament box for heating, the high-temperature pressing roller is arranged at intervals of 10 mm, the raw material filaments pass between two rollers, the surface of the raw material filaments is fused by the high-temperature pressing roller, and the long hair filaments are output after being rapidly pulled out and cooled by cooling air; Then, the long hair filaments after cooling are sent into a deep indentation device for twisting, and indentation filaments semi-finished filaments with indentations (2-1-1) are output; Finally, the semi-finished filaments are jetted, the twisted parts of the semi-finished filaments are twisted together, network points are formed on the surface of the semi-finished filaments, and finished filler filaments (2-1) are output; 3) twisting the filler filaments (2-1) into the center rope (2-2) to form the high load biological device (2) filler monomer.

2. The biochemical tank end suspended matter separation device according to claim 1, characterized in that: It also includes a turbulence device, the turbulence device includes aeration ring pipe (9), micro-bubble aeration disc (10), water baffle (20) and water weir (15), the aeration ring pipe (9) is located below high load biological device (2) and is laid along the bottom of biochemical pool (1) horizontally, the aeration ring pipe (9) inlet protrudes outside the biochemical pool (1) and is connected with air source, the micro-bubble aeration disc (10) is several and is uniformly distributed on the upper side wall of aeration ring pipe (9), the micro-bubble aeration disc (10) is communicated with aeration ring pipe (9), the water baffle (20) is arranged at the front end of honeycomb filler device (3) and is fixed on the fixed frame (19), the upper end of water baffle (20) is higher than liquid level, the lower end is low on the left and high on the right, the water outlet well (12) of biochemical pool (1) is arranged at the left side of the end of biochemical pool (1), the water weir (15) is arranged at the top of the front end of the well mouth of water outlet well (12), the upper end of water weir (15) is higher than liquid level.

3. The biochemical tank end suspended matter separation device according to claim 1, characterized in that: It also includes a reflux device, the reflux device includes reflux pump (14), together pipe (13) and porous pipe (11), the reflux pump (14) is located outside the biochemical pool (1), the both ends of together pipe (13) are connected with the inlet of reflux pump (14) and the outlet of porous pipe (11) respectively, the lower end of porous pipe (11) is provided with a plurality of through holes, and the porous pipe (11) is arranged at the end of biochemical pool (1) and is located at the bottom of the water outlet area.

4. The biochemical tank end suspended matter separation device according to claim 1, characterized in that: The polyolefin or polyamide is selected from one or more of polypropylene, polyethylene, polyvinyl chloride and ABS resin.

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