Low energy consumption integrated sewage treatment device

Abstract

The present invention relates to the technical field of sewage treatment, and in particular to a low-energy integrated sewage treatment device. The low-energy integrated sewage treatment device provided by the present invention includes a shell and a lifting pump; the top of the shell is provided with a water distribution component, the bottom is provided with multiple mud discharge parts, and the shell is provided with a partition for dividing the shell into an upper area and a lower area; the upper area is provided with a second filter part, a third filter part and an inclined tube sedimentation part from top to bottom, and the lower area is provided with a first filter part, the first filter part is provided with a first water inlet and a first water outlet, and the inclined tube sedimentation part is provided with a second water outlet and a sedimentation area mud discharge port; the lifting pump includes an inlet end and an outlet end, the inlet end is connected to the first water outlet, and the outlet end is connected to the water distribution component. The present invention has only one lifting pump, which greatly reduces the operating energy consumption and maintenance management costs, and the integrated design greatly reduces the construction cost.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a low-energy-consumption integrated sewage treatment device. Background Art

[0002] Rural domestic sewage is a general term for sewage generated by rural residents in their daily lives and family farming, including kitchen sewage, washing sewage, toilet sewage and aquaculture wastewater. Compared with urban domestic sewage, rural domestic sewage has the characteristics of wide discharge range, high dispersion, difficulty in unified collection and large fluctuations in water quality.

[0003] In the face of the low level of economic development and environmental protection capabilities in rural areas, how to meet the technical requirements of rural sewage treatment while effectively and economically treating local water pollution conditions is an important factor that needs to be considered.

[0004] Traditional sewage treatment equipment is usually arranged horizontally, occupies a large area, and is quite expensive, making it unsuitable for the treatment of rural domestic sewage. Summary of the invention

[0005] In order to solve the above technical problems or at least partially solve the above technical problems, the present invention provides a low-energy integrated sewage treatment device.

[0006] The present invention provides a low-energy-consumption integrated sewage treatment device, comprising a housing and a lifting pump;

[0007] The top of the shell is provided with a water distribution component, the bottom is provided with a plurality of mud discharge parts, and the shell is provided with a partition plate for dividing the shell into an upper area and a lower area;

[0008] The upper region is provided with a second filter portion, a third filter portion and an inclined tube sedimentation portion from top to bottom in sequence, the lower region is provided with a first filter portion, the first filter portion is provided with a first water inlet and a first water outlet, the inclined tube sedimentation portion is provided with a second water outlet and a sedimentation area mud discharge port;

[0009] The lift pump comprises an inlet end and an outlet end, the inlet end is in communication with the first water outlet, and the outlet end is in communication with the water distribution component;

[0010] Among them, sewage enters the first filter part for treatment through the first water inlet, enters the water distribution component through the first water outlet through the lifting pump for water distribution, and after the water distribution component distributes water, the water is successively processed by the second filter part, the third filter part and the inclined tube sedimentation part, and then the water is discharged from the second water outlet, and the sediment is discharged from the mud discharge part and the mud discharge port of the sedimentation area respectively.

[0011] Furthermore, the first water inlet and the first water outlet are arranged on both sides of the first filter portion in a width direction;

[0012] Along the direction from the first water inlet to the first water outlet, a first baffle and a second baffle are sequentially arranged in the first filter portion, and the first baffle and the second baffle are arranged at an interval;

[0013] There is a gap between the first baffle plate and the bottom wall of the shell, and the second baffle plate abuts against the bottom wall of the shell.

[0014] Furthermore, the first filter part includes a primary filter tank filler, and a first aeration component is provided at the bottom of the primary filter tank filler.

[0015] Further, the water distribution component includes a distribution trough and at least one water distribution trough, and the distribution trough is arranged above the water distribution trough;

[0016] Among them, the distribution trough is provided with a first overflow port corresponding to the number of the water diversion troughs, and the first overflow port is used to flow the water in the distribution trough to the water diversion trough. The water diversion trough is provided with multiple second overflow ports, and the second overflow port is used to flow the water in the distribution trough to the second filter part.

[0017] Furthermore, the second filter part is provided with a first support frame, and a secondary filter tank filler is provided above the first support frame;

[0018] The third filter part is provided with a second support frame, and a third-level filter tank filler is provided above the second support frame.

[0019] Furthermore, an inner flow channel is provided between the inclined tube sedimentation portion and the side wall of the shell, and the inner flow channel is communicated with the bottom of the inclined tube sedimentation portion;

[0020] A water collecting plate is provided on the top of the inclined tube sedimentation part, and the water collecting plate is used to collect the water processed by the third filtering part and introduce it into the inner flow channel.

[0021] Furthermore, the inclined tube sedimentation section is provided with a plurality of closely arranged inclined tubes;

[0022] The second water outlet is arranged above the inclined tube.

[0023] Furthermore, a second aeration component is provided above the water collecting plate.

[0024] Furthermore, an air extraction duct penetrating the second filter portion and the third filter portion is provided in the shell.

[0025] Furthermore, the mud discharge portion includes an inclined plate, the bottom of the mud discharge portion is provided with a mud discharge port, and the inclined plate is inclined from the bottom wall of the mud discharge portion toward the mud discharge port.

[0026] The technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art:

[0027] The low-energy integrated sewage treatment device provided by the embodiment of the present invention comprises: a housing and a lifting pump; the top of the housing is provided with a water distribution component, the bottom has a plurality of mud discharge parts, and the housing is provided with a partition for dividing the housing into an upper area and a lower area. The lower area is provided with a first filter part, the first filter part is provided with a first water inlet and a first water outlet, and the first filter part can make the sand and gravel flocs in the incoming water initially precipitate, and adjust and dilute the incoming water with large fluctuations and initially degrade the pollutants. The upper area is provided with a second filter part, a third filter part and an inclined tube sedimentation part from top to bottom. The lifting pump includes an inlet end and an outlet end, the inlet end is connected with the first water outlet, and the outlet end is connected with the water distribution component. The lifting pump can lift the bottom sewage to the top. Specifically, the lifting pump lifts the sewage from the first water outlet to the top of the shell to reach the water distribution component. The sewage drips from the water distribution component to the second filter part by gravity, and falls into the third filter part for further treatment after the second filter part distributes water for the second time. After that, the sewage enters the inclined tube sedimentation part, and the inclined tube sedimentation part is provided with a second water outlet. The water overflows through the inclined tube, and the purified water is discharged from the second water outlet. The present invention is designed based on the characteristics and current status of rural sewage. There is only one lifting pump, which greatly reduces the operating energy consumption and maintenance management costs. Only regular inspections and maintenance are required. At the same time, the integrated design of the process flow greatly reduces the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] Figure 1 This is a schematic diagram of the structure of a low-energy integrated sewage treatment device according to an embodiment of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the water distribution component in the low-energy integrated sewage treatment device according to an embodiment of the present invention.

[0032] Figure numerals: 1-housing; 11-first filter section; 111-first water inlet; 112-first water outlet; 113-primary filter tank filler; 114-first baffle; 115-second baffle; 116-first aeration component; 117-gap; 12-second filter section; 121-secondary filter tank filler; 122-first support frame; 13-third filter section; 131-third filter tank filler; 132-second support frame; 14-partition; 15-mud discharge section; 151-inclined plate; 152-mud discharge port; 16-inclined tube sedimentation section; 161-second water outlet; 162-inner flow channel; 16 3-water collecting plate; 164-inclined pipe; 17-second aeration component; 18-air extraction pipe; 2-lifting pump; 21-inlet end; 22-outlet end; 3-water distribution component; 31-distribution trough; 311-first overflow port; 32-water distribution trough; 321-second overflow port; 41-water inlet valve; 42-bottom water outlet valve; 43-filter tank water outlet valve; 44-return valve; 45-sludge outlet of sedimentation area; 46-sludge outlet valve of mud discharge section; 47-flushing drain valve; 48-middle exhaust valve; 49-bottom exhaust valve; 50-high liquid level switch; 51-low liquid level switch; 52-water outlet flow meter; 53-drain port. DETAILED DESCRIPTION

[0033] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0035] like Figure 1As shown, the low-energy integrated sewage treatment device provided by the embodiment of the present invention includes: a shell 1 and a lifting pump 2. The top of the shell 1 is provided with a water distribution component 3, and the bottom has multiple mud discharge parts 15. The shell 1 is provided with a partition 14 for dividing the shell 1 into an upper area and a lower area. The lower area is provided with a first filter part 11, and the first filter part 11 is provided with a first water inlet 111 and a first water outlet 112. The first filter part 11 can make the sand and gravel flocs in the incoming water initially precipitate, and adjust and dilute the incoming water with large fluctuations, and initially degrade pollutants, and initially degrade some organic matter. The upper area is provided with a second filter part 12, a third filter part 13 and an inclined tube sedimentation part 16 from top to bottom. The lifting pump 2 includes an inlet end 21 and an outlet end 22. The inlet end 21 is connected to the first water outlet 112, and the outlet end 22 is connected to the water distribution component 3. The lifting pump 2 can lift the bottom sewage to the top. Specifically, the lifting pump 2 lifts the sewage from the first water outlet 112 to the top of the shell 1 and reaches the water distribution component 3. The sewage drips from the water distribution component 3 to the second filter part 12 by gravity, and falls into the third filter part 13 after secondary water distribution by the second filter part 12 for further treatment. After that, the sewage enters the inclined tube sedimentation part 16. The inclined tube sedimentation part 16 is provided with a second water outlet 161. The water overflows through the inclined tube 164, and the purified water is discharged from the second water outlet 161.

[0036] In other words, after the water enters the first filter section 11 through the first water inlet 111 for treatment, it enters the water distribution component 3 through the first water outlet 112 through the lifting pump 2 for water distribution. After the water distribution component 3 distributes water, the water is sequentially treated by the second filter section 12, the third filter section 13 and the inclined tube sedimentation section 16, and then the water is discharged from the second water outlet 161, and the sediment is discharged from the mud discharge section 15 and the sedimentation area mud discharge port (45) respectively. This embodiment is designed based on the characteristics and current situation of rural sewage, and only one lifting pump is used, which greatly reduces the operating energy consumption and maintenance management costs. At the same time, the integrated design greatly reduces the construction cost. The low-energy integrated sewage treatment device provided in this embodiment only needs regular inspection and maintenance after being put into use, which reduces the maintenance cost.

[0037] In some embodiments, the first water inlet 111 and the first water outlet 112 are arranged on both sides of the first filter 11 in the width direction. In the direction from the first water inlet 111 to the first water outlet 112, the first baffle 114 and the second baffle 115 are sequentially arranged in the first filter 11. The first baffle 114 and the second baffle 115 are arranged at intervals, wherein a gap 117 is provided between the first baffle 114 and the bottom wall of the housing 1, and the second baffle 115 abuts against the bottom wall of the housing 1. Sewage enters the area between the housing 1 and the first baffle 114 from the first water inlet 111, and after being filtered by the first filter 11, the sewage enters the area between the first baffle 114 and the second baffle 115 from the gap 117 at the bottom of the first baffle 114, and after being processed by the first filter 11 again, the sewage enters the area between the second baffle 115 and the housing 1 from the top of the second baffle 115. The sewage is processed by the first filter 11 for the third time and discharged from the first water outlet 112. Through the arrangement of the first baffle 114 and the second baffle 115, the first filter section 11 can initially precipitate some of the gravel flocs in the incoming water, and adjust, dilute and initially digest the incoming water with large fluctuations. The first filter section 11 includes a primary filter tank filler 113, which acts as a microbial carrier to enhance the denitrification reaction. The first baffle 114 and the second baffle 115 can initially precipitate some of the gravel flocs in the incoming water, and the incoming water can be fully mixed at this stage, increasing the contact with the primary filter tank filler 113, and performing a better biochemical reaction.

[0038] Optionally, a plurality of first baffles 114 and second baffles 115 may be provided, and they are provided in the order of first baffle 114, second baffle 115, first baffle 114, second baffle 115, ..., a gap 117 is provided between each first baffle 114 and the bottom wall of the outer shell 1, and each second baffle 115 is in contact with the bottom wall of the outer shell 1, so that the microorganisms attached to the primary filter tank filler 113 can be fully utilized to carry out preliminary hydrolysis, acidification and denitrification of organic matter, and some gravel flocs in the influent can be initially precipitated, and the influent can be fully mixed at this stage to increase the contact with the primary filter tank filler 113 and carry out better biochemical reaction.

[0039] Optionally, multiple mud discharge parts 15 can be provided. Taking three mud discharge parts 15 as an example, they are respectively recorded as the first mud discharge part, the second mud discharge part and the third mud discharge part. The first mud discharge part is located at the bottom of the area between the outer shell 1 and the first baffle 114, the second mud discharge part is located at the bottom of the area between the first baffle 114 and the second baffle 115, and the third mud discharge part is located at the bottom of the area between the second baffle 115 and the outer shell 1, which are used to collect the sediment in each area respectively, so as to discharge the sediment in each area separately and clean each mud discharge part.

[0040] The primary filter filler 113 can be made of polyurethane with a specification of 5*5*5, and the filler filling rate is 15% to 20%. A first aeration component 116 is arranged at the bottom of the primary filter filler 113, and the first aeration component 116 can be used as a part of the filter flushing system. Optionally, the flushing equipment includes a fan, a water pump, etc., and an external mobile device is used.

[0041] The first aeration component 116 includes an aeration pipe, which is connected to an external mobile equipment blower through a pipeline. A valve is provided on the pipeline to adjust the aeration amount or close the aeration. The aeration pipe is provided with a plurality of aeration holes.

[0042] The primary filter tank filler 113 can be equipped with an external membrane to allow microorganisms to attach to the porous filter material to form a biofilm to absorb organic matter in the sewage. After the biofilm is successfully formed, it is put into the filter tank and the water intake is gradually increased during the acclimation stage to allow the biofilm on the filter material to gradually adapt to the environment.

[0043] During normal operation, the sewage is collected and enters from the water inlet valve 41, mixed with the outlet water of the inclined tube sedimentation part 16 (the outlet water of the second outlet 161), and enters the anaerobic stage after dilution. Under the guidance of the first baffle 114 and the second baffle 115, it fully contacts with the primary filter filler 113, and fully utilizes the microorganisms attached to the primary filter filler 113 to perform preliminary organic matter hydrolysis, acidification and denitrification. Then it enters the lift pump 2 through the bottom outlet valve 42.

[0044] The above-mentioned first filter part 11 is provided with a bottom exhaust valve 49 to ensure smooth water inlet and prevent the accumulation of harmful gases produced in the biochemical reaction. A high liquid level switch 50 is installed in the third filter part 13. When the high liquid level is reached, the water inlet is stopped to ensure the normal operation of the third filter part 13. A low liquid level switch 51 is installed in the first filter part 11. When the water inlet is insufficient and the low liquid level is triggered, the lifting pump 2 stops working.

[0045] Optionally, a low liquid level switch 51 and a high liquid level switch 50 are respectively provided in the first filter part 11 and the third filter part 13 , and when the liquid level switch is touched, the lift pump 2 stops running.

[0046] The inclined tube sedimentation section 16 is provided with a filter tank outlet valve 43 and an outlet flow meter 52. The filter tank outlet valve 43 is adjusted to meet the treatment conditions of the low-energy integrated sewage treatment device. Part of the outlet water flows back to the first filter section 11 through the reflux valve 44 to dilute the inlet water, which can effectively withstand a certain hydraulic shock load and provide an electron acceptor for the denitrification reaction of the first filter section 11. At the same time, a middle exhaust valve 48 is provided in the first filter section 11 to ensure smooth water flow in the inclined tube sedimentation section 16.

[0047] like Figure 2As shown, the water distribution component 3 includes a distribution groove 31 and at least one water distribution groove 32, wherein the distribution groove 31 is arranged above the water distribution groove 32, wherein the distribution groove is provided with a first overflow port 311 corresponding to the number of the water distribution grooves 32, the first overflow port 311 is used to flow the water in the distribution groove 31 to the water distribution groove 32, and the water distribution groove 32 is provided with a plurality of second overflow ports 321, and the second overflow ports 321 are used to flow the water in the distribution groove 31 to the second filter 12. The lifting pump 2 lifts the water from the first water outlet 112 at the bottom to the water distribution component 3, and the water is initially distributed through the water distribution component 3. Through the arrangement of the first overflow port 311 and the second overflow port 321, the water distribution on the surface of the second filter 12 is more uniform. By setting the height of the first overflow port 311 and the second overflow port 321, the water distribution is uniform. Compared with the conventional perforated water distribution pipe, the water distribution component 3 in this embodiment can not only prevent clogging, but also be easy to clean.

[0048] Optionally, along the extension direction of the distribution groove 31, the water distribution grooves 32 are evenly spaced, and the extension directions of the plurality of water distribution grooves 32 are parallel to each other, so that the water distribution on the surface of the second filter part 12 is more uniform.

[0049] In some embodiments, the second filter unit 12 is provided with a first support frame 122 , and a secondary filter filler 121 is provided above the first support frame 122 . The third filter unit 13 is provided with a second support frame 132 , and a tertiary filter filler 131 is provided above the second support frame 132 .

[0050] The secondary filter tank filler 121 and the tertiary filter tank filler 131 can respectively adopt an external membrane device to allow microorganisms to attach to the porous filter material to form a biofilm to absorb organic matter in the sewage. After the biofilm is successfully formed, it is put into the filter tank and the water intake is gradually increased during the acclimation stage to allow the biofilm on the filter material to gradually adapt to the environment.

[0051] The sewage flows from the water distribution component 3 to the high-strength secondary filter tank filler 121 for primary aeration, and then falls into the tertiary filter tank filler 131 after secondary water distribution by the secondary filter tank filler 121. The sewage is further treated by the tertiary filter tank filler 131 under the action of gravity, and the effluent is collected by the water collecting plate 163 and enters the inclined tube sedimentation part 16 through the inner flow channel 162.

[0052] Optionally, the third-stage filter filler 131 is further divided into multiple layers of fillers to form different optimized combinations, thereby constituting a more complete microbial ecological community and improving the treatment effect of effluent.

[0053] Optionally, the secondary filter filler 121 may be volcanic rock with a specification of 20 to 40 mm and a porosity of 70% to 85%, and a filler filling rate of 2 to 3%.

[0054] Optionally, the third-stage filter filler 131 may be made of polyurethane or suspended beads, with a filler filling rate of 40-45%.

[0055] In some embodiments, the inner flow channel 162 is disposed between the inclined tube sedimentation portion 16 and the side wall of the housing 1, the inner flow channel 162 is connected to the bottom of the inclined tube sedimentation portion 16, and a water collecting plate 163 is disposed on the top of the inclined tube sedimentation portion 16, and the water collecting plate 163 is used to collect the water processed by the third filter portion 13 and introduce it into the inner flow channel 162. Optionally, the slope of the water collecting plate 163 is 0.5-1%, which is convenient for collecting water and is conducive to introducing water into the inner flow channel 162.

[0056] In some embodiments, the inclined tube sedimentation section 16 is provided with a plurality of closely arranged inclined tubes 164, and the second water outlet 161 is provided above the inclined tube 164. The water passing through the third filter section 13 enters the inclined tube sedimentation section 16, overflows through the inclined tube 164, is discharged from the second water outlet 161, and partially flows back to the first filter section 11, and the amount of the reflux water is coordinated and controlled by the reflux valve 44 and the filter tank outlet valve 43.

[0057] The inclined tube sedimentation section 16 is provided with a sedimentation area mud discharge port 45 . Every 3 to 6 months, the mud discharge port valve is opened to discharge the precipitated microbial flocs from the sedimentation area mud discharge port 45 .

[0058] In some embodiments, the secondary filter tank filler 121 is subjected to secondary water distribution and then falls into the secondary filter tank filler 121 for secondary aeration. The lifting pump 2 lifts the bottom effluent to the water distribution component 3, performs the initial water distribution through the water distribution component 3, and performs the initial splashing and oxygenation aeration in the process of falling to the secondary filter tank filler 121. The sewage is again distributed in the secondary filter tank filler 121 to make the water distribution on the surface of the second filter part 12 more uniform, and is oxygenated again in the process of falling to the tertiary filter tank filler 131. A second aeration component 17 is provided above the water collecting plate 163, and the aeration pipe opening of the second aeration component 17 is downward for filter tank flushing. The second aeration component 17 includes an aeration pipe, which is connected to the blower through a pipeline, and a valve is provided on the pipeline for adjusting the aeration amount or closing the aeration, and a plurality of aeration holes are provided on the aeration pipe.

[0059] In some embodiments, an air extraction pipe 18 is provided in the housing 1, which penetrates the second filter part 12 and the third filter part 13. The air extraction pipe 18 connects the air layers inside and outside the second filter part 12 and the third filter part 13, and uses the air pressure generated by the difference in air temperature, humidity and density inside and outside the housing 1 to make the air flow in the third filter tank filler 131, thereby forming natural aeration. The air extraction pipe 18 oxygenates the microorganisms by natural air extraction, without the need for mechanical aeration.

[0060] The evenly distributed sewage gradually infiltrates in the tertiary filter filler 131, and the pollutants in the water are intercepted and adsorbed by the tertiary filter filler 131. Under the action of the air extraction pipe 18, the gaps in the tertiary filter filler 131 are filled with naturally circulated air, providing sufficient oxygen for the attached microorganisms to perform biochemical reactions.

[0061] Optionally, the air extraction pipe 18 may be located at a central position, or at an edge of the housing 1 or an eccentric position.

[0062] Optionally, when backwashing is required due to blockage, the air extraction duct 18 may also be connected to an external mobile water pump to serve as an inlet pipe for flushing water.

[0063] Preferably, the height of the air extraction pipe 18 is related to the load of the filter tank, and its height is 1.5 to 2 times the sum of the heights of the second filter part 12 and the third filter part 13 .

[0064] In some embodiments, the mud discharge portion 15 includes an inclined plate 151, and a mud discharge port 152 is formed at the bottom of the mud discharge portion 15. The inclined plate 151 is inclined from the side wall of the mud discharge portion 15 to the mud discharge port 152.

[0065] A mud discharge port 152 is provided at the bottom of the mud discharge part 15 to clean the aged biofilm shed from the filler of the first filter tank and the large particle flocs of the incoming water every six months to one year.

[0066] In some embodiments, the first filter unit 11 is provided with a drain port 53, and the drain port 53 is an overflow drain port 53 added to prevent system control failure and excessive water inflow.

[0067] Optionally, the sewage treatment method in this embodiment has a volumetric load of 1.5 to 1.8 kg BOD5 / m 3 ·d

[0068] When a blockage occurs, inspectors will carry external mobile equipment to clear it.

[0069] First, fill the filter tank with clean water through the air extraction pipe 18 and the bottom water inlet valve 41, open the first aeration component 116 and the second aeration component 17 to perform air flushing for 5 to 10 minutes, then stop aeration, and discharge the flushing wastewater in the tank through the mud discharge port 152, the mud discharge valve 46 of the mud discharge part, and the external mobile mud discharge pump, close the mud discharge valve 46 of the mud discharge part, continue to inject water into the shell 1 through the air extraction pipe 18, and continue aeration. The wastewater is discharged from the flushing drain valve 47 at the top. After 3 to 5 minutes, stop water intake, and the wastewater at the bottom of the inclined tube sedimentation area is discharged from the sedimentation area mud discharge port 45, and the cleaning is completed.

[0070] As a specific implementation method, the sewage treatment equipment has a treatment scale of 10t / d and a volume load of 1.8kgBOD5 / m 3·d, the reflux ratio R is 300%, and the treatment effect is as follows:

[0071] Control Project <![CDATA[BOD5]]> COD SS Ammonia nitrogen Total Nitrogen Total Phosphorus unit mg / L mg / L mg / L mg / L mg / L mg / L Influent water quality ≤250 ≤400 ≤60 ≤50 ≤70 ≤5 Outlet water quality ≤20 ≤50 ≤20 ≤8 ≤20 ≤1

[0072] The manufacturing and installation cost of the equipment is 1,500 yuan / t. On the premise of achieving stable Class B standards, the operating cost is 0.3 yuan / t.

[0073] In summary, the present invention greatly reduces operating energy consumption and maintenance management costs, and only requires regular inspections and maintenance. At the same time, the integrated design of the process flow greatly reduces construction costs.

[0074] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0075] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments described herein, but should conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A low-energy integrated sewage treatment device, characterized in that: include: A housing (1) and a lift pump (2); The top of the shell (1) is provided with a water distribution component (3), the bottom is provided with a plurality of mud discharge portions (15), and the shell (1) is provided with a partition (14) for dividing the shell (1) into an upper area and a lower area; The upper region is provided with a second filter portion (12), a third filter portion (13) and an inclined tube sedimentation portion (16) in order from top to bottom; the lower region is provided with a first filter portion (11), the first filter portion (11) is provided with a first water inlet (111) and a first water outlet (112); the inclined tube sedimentation portion (16) is provided with a second water outlet (161) and a sedimentation area mud discharge port (45); The lift pump (2) comprises an inlet end (21) and an outlet end (22), the inlet end (21) being in communication with the first water outlet (112), and the outlet end (22) being in communication with the water distribution component (3); wherein water enters the first filter section (11) through the first water inlet (111) for treatment, enters the water distribution component (3) through the first water outlet (112) via the lifting pump (2) for water distribution, and after the water distribution component (3) distributes the water, the water is sequentially processed through the second filter section (12), the third filter section (13) and the inclined tube sedimentation section (16), and then the water is discharged from the second water outlet (161), and the sediment is discharged from the mud discharge section (15) and the sedimentation area mud discharge port (45) respectively; The first water inlet (111) and the first water outlet (112) are arranged on both sides of the first filter portion (11) in a width direction; Along the direction from the first water inlet (111) to the first water outlet (112), a first baffle (114) and a second baffle (115) are sequentially arranged in the first filter portion (11), and the first baffle (114) and the second baffle (115) are arranged at an interval; Wherein, a gap (117) is provided between the first baffle plate (114) and the bottom wall of the housing (1), and the second baffle plate (115) abuts against the bottom wall of the housing (1); The first filter portion (11) comprises a primary filter tank filler (113), and a first aeration component (116) is provided at the bottom of the primary filter tank filler (113); An inner flow channel (162) is provided between the inclined tube sedimentation portion (16) and the side wall of the outer shell (1), and the inner flow channel (162) is in communication with the bottom of the inclined tube sedimentation portion (16); A water collecting plate (163) is provided on the top of the inclined tube sedimentation section (16), and the water collecting plate (163) is used to collect water processed by the third filter section (13) and introduce it into the inner flow channel (162); A second aeration component (17) is provided above the water collecting plate (163); an air extraction pipe (18) penetrating the second filter part (12) and the third filter part (13) is provided in the housing (1); The first filter section (11) includes a primary filter filler (113), the primary filter filler (113) serving as a microbial carrier to perform an enhanced denitrification reaction, the first baffle (114) and the second baffle (115) allowing a portion of the sand and gravel flocs in the influent to be initially precipitated, and the influent can be fully mixed, thereby increasing contact with the primary filter filler (113) and performing a better biochemical reaction; The secondary filter filler (121) and the tertiary filter filler (131) are respectively equipped with external membranes to allow microorganisms to attach to the porous filter material to form a biofilm to adsorb organic matter in the sewage. After the biofilm is successfully formed, it is put into the filter tank and the water intake is gradually increased during the acclimation stage to allow the biofilm on the filter material to gradually adapt to the environment.

2. The low-energy integrated sewage treatment device according to claim 1 is characterized in that: The water distribution component (3) comprises a distribution groove (31) and at least one water distribution groove (32), wherein the distribution groove (31) is arranged above the water distribution groove (32); The distribution trough (31) is provided with a number of first overflow ports (311) corresponding to the number of the water diversion troughs (32), the first overflow ports (311) being used to allow water in the distribution trough (31) to flow to the water diversion trough (32), the water diversion trough (32) being provided with a plurality of second overflow ports (321), the second overflow ports (321) being used to allow water in the distribution trough (31) to flow to the second filter portion (12).

3. The low-energy integrated sewage treatment device according to claim 1 is characterized in that: The second filter portion (12) is provided with a first support frame (122), and a secondary filter tank filler (121) is provided above the first support frame (122); The third filter portion (13) is provided with a second support frame (132), and a third-level filter tank filler (131) is provided above the second support frame (132).

4. The low-energy integrated sewage treatment device according to claim 1 is characterized in that: The inclined tube sedimentation section (16) is provided with a plurality of closely arranged inclined tubes (164); The second water outlet (161) is arranged above the inclined tube (164).

5. The low-energy integrated sewage treatment device according to claim 1 is characterized in that: The mud discharge portion (15) comprises an inclined plate (151), the bottom of the mud discharge portion (15) is provided with a mud discharge opening (152), and the inclined plate (151) is inclined from a side wall of the mud discharge portion (15) toward the mud discharge opening (152).

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