CN214936852U - Sewage treatment system of rural sewage with low carbon-nitrogen ratio - Google Patents
Sewage treatment system of rural sewage with low carbon-nitrogen ratio Download PDFInfo
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- CN214936852U CN214936852U CN202120842037.4U CN202120842037U CN214936852U CN 214936852 U CN214936852 U CN 214936852U CN 202120842037 U CN202120842037 U CN 202120842037U CN 214936852 U CN214936852 U CN 214936852U
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- 239000010865 sewage Substances 0.000 title claims abstract description 102
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract description 44
- 239000000945 filler Substances 0.000 claims abstract description 31
- 239000012528 membrane Substances 0.000 claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000010802 sludge Substances 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 9
- 239000011593 sulfur Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000002572 peristaltic effect Effects 0.000 claims description 8
- 238000005273 aeration Methods 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 230000001651 autotrophic effect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 230000007269 microbial metabolism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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Abstract
The utility model provides a sewage treatment system of rural sewage of low carbon-nitrogen ratio, include: the sewage collecting tank, the filtering chamber, the anoxic chamber, the anaerobic chamber, the aerobic chamber and the settling chamber are sequentially communicated in the water flow direction of sewage treatment; a filtering membrane is obliquely arranged in the filtering chamber, a valve is arranged on the side wall of the filtering chamber connected with the lower end of the filtering membrane, the valve is arranged above the joint of the filtering chamber and the lower end of the filtering membrane, a filtering slag pool is arranged at the bottom of the outer side surface of the filtering chamber, flow meters are arranged on pipelines between the sewage collecting pool and the filtering chamber and between the filtering chamber and the anoxic chamber, and the flow meters and the valve are connected with a controller; the interior of the anoxic chamber is filled with activated sludge, scrap iron, sponge biological filler and sulfur particles.
Description
Technical Field
The utility model belongs to the sewage treatment field, concretely relates to sewage treatment system of rural sewage of low carbon-nitrogen ratio.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Compared with the urban area, the rural area is relatively distributed in geographical distribution, and if the existing centralized sewage treatment system adopted by the urban area is used, huge sewage pipe network investment is inevitably caused, so that the centralized sewage treatment mode adopted by the urban area is not suitable for the rural area with the scattered geographical position, and a distributed treatment mode is needed for nearby treatment.
In addition, most rural sewage has the characteristic of low pollution and low carbon-nitrogen ratio (C/N), and most of the existing denitrification technologies need an additional carbon source, so that secondary pollution is caused, and the cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sewage treatment system for rural sewage with low carbon-nitrogen ratio, wherein a filter membrane is obliquely arranged in a filter chamber, when a valve is opened, filter residue automatically enters a filter residue pool under the combined action of gravity and sewage, and the filter chamber is not required to be manually cleaned; activated sludge, scrap iron, sponge biological filler and sulfur particles are filled in the anoxic chamber, so that the biological denitrification effect is enhanced, the cost of an external carbon source is reduced, and secondary pollution is avoided.
In order to achieve the purpose, the utility model adopts the following technical measures:
a sewage treatment system for rural sewage with low carbon-nitrogen ratio comprises a sewage collecting tank, a filter chamber, an anoxic chamber, an anaerobic chamber, an aerobic chamber and a settling chamber which are sequentially communicated in the water flow direction of sewage treatment, wherein,
a filtering membrane is obliquely arranged in the filtering chamber, a valve is arranged on the side wall of the filtering chamber connected with the lower end of the filtering membrane, the valve is arranged above the connection part of the filtering chamber and the lower end of the filtering membrane, and a filter residue pool is arranged at the bottom of the outer side surface of the filtering chamber;
the anaerobic chamber is internally provided with a first perforated plate and a second perforated plate, the anaerobic chamber is internally provided with a third perforated plate and a fourth perforated plate, and activated sludge, scrap iron, sponge biological filler and sulfur particles are filled between the first perforated plate and the second perforated plate and between the third perforated plate and the fourth perforated plate.
Furthermore, a fifth perforated plate and a sixth perforated plate are arranged in the aerobic chamber, and rope-type biological fillers and porous fillers are filled between the fifth perforated plate and the sixth perforated plate.
Further, the sewage collecting tank is connected with the filtering chamber through a first pipeline, and a first flowmeter is arranged on the first pipeline; the filter chamber and the anoxic chamber are connected through a second pipeline, and a second flowmeter is arranged on the second pipeline.
Further, the first flow meter, the second flow meter and the valve are all connected with the controller.
Furthermore, peristaltic pumps and electromagnetic valves are further arranged on the first pipeline and the second pipeline, and the electromagnetic valves are connected with a controller.
Further, a grating is obliquely arranged in the sewage collecting tank.
Further, sewage stirrers are arranged inside the anoxic chamber and the anaerobic chamber.
Further, the material of the porous filler is polyurethane, ceramic or alumina.
Further, an aeration blower is arranged at the bottom of the aerobic chamber.
Furthermore, the bottom of the settling chamber is connected with the filtering chamber through a return pipeline, and a sludge return pump is arranged on the return pipeline.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the slope is provided with filtration membrane in the filter chamber among the sewage treatment system, when the valve was opened, the filter residue got into the filter residue pond under the combined action of gravity and sewage automatically, need not the manual cleaning filter chamber.
2. The anoxic chamber in the sewage treatment system of the utility model is filled with activated sludge, scrap iron, sponge biological filler and sulfur particles; anoxic and anaerobic microorganisms on the surfaces of the activated sludge and the sponge biological filler utilize organic matters and nitrate in the sewage to generate denitrification so as to remove total nitrogen and hydrolyze macromolecular protein; the sulfur particles and the scrap iron can promote the growth and enrichment of autotrophic denitrifying bacteria, and the biological denitrification effect is enhanced; the activated sludge reduces the cost of an external carbon source and avoids secondary pollution.
3. Sewage collecting pit and filter chamber among the sewage treatment system are through first pipe connection, are provided with first flowmeter on the first pipeline, and filter chamber and oxygen deficiency room pass through the second pipe connection, are provided with the second flowmeter on the second pipeline, first flowmeter, second flowmeter and valve all are connected with the controller, and the flow difference value that records through first flowmeter and second flowmeter can accurately judge the accumulational filter residue thickness of filtration membrane 33 to the realization is to the timely processing of filter residue.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a sewage treatment system of the present invention.
Wherein: 1. the sewage treatment device comprises a sewage collecting pool, 11, a grid, 12, a sewage collecting pool water inlet side, 13, a sewage collecting pool water outlet side, 2, a first pipeline, 21, a first peristaltic pump, 22, a first electromagnetic valve, 23, a first flowmeter, 3, a filtering chamber, 31, an upper filtering chamber, 32, a lower filtering chamber, 33, a filtering membrane, 34, a valve, 35, a filtering residue pool, 4, a second pipeline, 41, a second flowmeter, 42, a second peristaltic pump, 43, a second electromagnetic valve, 5, an anoxic chamber, 51, a first perforated plate, 52, a second perforated plate, 53, a first sewage stirrer, 6, an anaerobic chamber, 61, a third perforated plate, 62, a fourth perforated plate, 63, a second sewage stirrer, 7, an aerobic chamber, 71, a fifth perforated plate, 72, a sixth perforated plate, 73, an aeration blower, 8, a settling chamber, 9, a backflow pipeline, 91 and a sludge backflow pump.
The specific implementation mode is as follows:
it should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, terms such as "connected" and "connected" should be understood in a broad sense, and may be either fixedly connected or integrally connected or detachably connected; may be directly connected or indirectly connected through an intermediate. The meaning of the above terms in the present invention can be determined according to specific situations by persons skilled in the art, and should not be construed as limiting the present invention.
The present invention will be further explained with reference to fig. 1 and the following embodiments.
The embodiment provides a sewage treatment system for rural sewage with a low carbon-nitrogen ratio.
As shown in figure 1, the sewage treatment system for the rural sewage with low carbon-nitrogen ratio comprises:
the sewage treatment device comprises a sewage collecting tank 1, a filtering chamber 3, an anoxic chamber 5, an anaerobic chamber 6, an aerobic chamber 7 and a settling chamber 8 which are sequentially communicated in the water flow direction of sewage treatment.
The sewage collecting tank 1 is obliquely provided with a grid 11, the angle between the grid and the bottom of the sewage collecting tank is 65 degrees, the gap between grid bars of the grid is 4-10mm, and the sewage collecting tank 1 is divided into two parts by the grid 11: sewage collecting tank side 12 and sewage collecting tank play water side 13 of intaking, sewage collecting tank 1's entry sets up on sewage collecting tank side 12's a lateral wall upper portion of intaking, the export sets up in sewage collecting tank side 13's a lateral wall middle part, sewage gets into sewage collecting tank 1 from sewage collecting tank 1's entry, grid 11 is used for intercepting the suspended solid in the sewage, make the suspended solid in the sewage receive certain restriction, sewage flows and abandons the suspended solid, avoid sewage collecting tank 1's export to be blockked up, sewage flows through grid 11 and flows into first pipeline 2 from sewage collecting tank 1's export, flow into filter chamber 3 from the entry of filter chamber 3 through first pipeline 2.
The outlet of the sewage collecting tank 1 is connected with the inlet of the filtering chamber 3 through a first pipeline 2, and a first peristaltic pump 21, a first electromagnetic valve 22 and a first flowmeter 23 are arranged on the first pipeline 2.
The filter chamber 3 is internally and obliquely and tightly and fixedly connected with a filter membrane 33, a valve 34 is arranged on the side wall of the filter chamber 3 connected with the lower end of the filter membrane 33, and the valve 34 is arranged above the connection part of the filter chamber 3 and the lower end of the filter membrane 33; the filter membrane 33 divides the filter chamber 3 into an upper filter chamber 31 and a lower filter chamber 32, the upper filter chamber 31 is communicated with the lower filter chamber 32 through the filter membrane 33, the inlet of the filter chamber 3 is arranged at the upper part of one side wall of the upper filter chamber 31, the outlet of the filter chamber 3 is arranged at the lower part of one side wall of the lower filter chamber 32, and the lower filter chamber 32 is provided with a filter residue pool 35 at the bottom of the outer side. The sewage flowing into the filtering chamber 3 flows into the second pipeline 4 at the outlet of the filtering chamber 3 through the filtering membrane 33, and flows into the anoxic chamber 5 from the inlet of the anoxic chamber 5 through the second pipeline 4.
The outlet of the filtering chamber 3 is connected with the inlet of the anoxic chamber 5 through a second pipeline 4, and a second flowmeter 41, a second peristaltic pump 42 and a second electromagnetic valve 43 are arranged on the second pipeline 4.
The controller is respectively connected with the first flowmeter 23, the second flowmeter 41 and the valve 34 (not shown in fig. 1), and when the flow difference measured by the first flowmeter 23 and the second flowmeter 41 exceeds a set threshold value, the valve 34 is opened, so that the filter residue accumulated on the filter membrane 33 enters the filter residue pool 35. When the flow difference measured by the first flow meter and the second flow meter exceeds a set threshold, it indicates that the filter residue accumulated on the filter membrane 33 is too thick, and the flow value measured by the second flow meter 41 is low, and at this time, the filter residue accumulated on the filter membrane 33 needs to be discharged into the filter residue pool 35.
The inlet of the anoxic chamber 5 is arranged at the lower part of one side wall of the anoxic chamber, the outlet is arranged at the upper part of one side wall of the anoxic chamber, a first perforated plate 51 and a second perforated plate 52 are arranged in the anoxic chamber 5 and are respectively positioned below the outlet and above the inlet of the anoxic chamber 5, and the first perforated plate 51 and the second perforated plate 52 divide the anoxic chamber 5 into three layers; a first sewage stirrer 53 is arranged in the anoxic chamber 5, the first sewage stirrer is a folding stirrer, each layer of the anoxic chamber 5 comprises at least one blade, and the blades can be used for enhancing the contact between sewage and a filler and preventing sediment deposition; fillers such as activated sludge, iron filings, sponge biological fillers, sulfur particles and the like are filled between the first perforated plate 51 and the second perforated plate 52. The sewage flowing into the anoxic chamber 5 flows into the pipe through the second perforated plate 52, the filler, and the first perforated plate 51 in sequence at the outlet of the anoxic chamber 5, and flows into the anaerobic chamber 6 from the inlet of the anaerobic chamber 6 through the pipe.
The outlet of the anoxic chamber 5 is also connected with the inlet of the anaerobic chamber 6 through a pipeline, and a peristaltic pump and an electromagnetic valve are also arranged on the pipeline.
An inlet of the anaerobic chamber 6 is arranged at the lower part of one side wall of the anaerobic chamber, an outlet is arranged at the upper part of one side wall of the anaerobic chamber, a third perforated plate 61 and a fourth perforated plate 62 are arranged in the anaerobic chamber 6 and are respectively positioned below the outlet and above the inlet of the anaerobic chamber 6, and the third perforated plate 61 and the fourth perforated plate 62 divide the anaerobic chamber 6 into three layers; a second sewage stirrer 63 is arranged in the anaerobic chamber 6, the second sewage stirrer is a folding stirrer, and each layer of the anaerobic chamber 6 comprises at least one blade which can be used for enhancing the contact between sewage and a filler and preventing sediment deposition; fillers such as activated sludge, scrap iron, sponge biological fillers, sulfur particles and the like are filled between the third perforated plate 61 and the fourth perforated plate 62. The sewage flowing into the anaerobic chamber 6 flows into the pipeline through the fourth perforated plate 62, the filler and the third perforated plate 61 in sequence at the outlet of the anaerobic chamber 6, and flows into the aerobic chamber 7 from the inlet of the aerobic chamber 7 through the pipeline.
Anoxic and anaerobic microorganisms on the surfaces of activated sludge and sponge biological filler in the filler utilize organic matters and nitrate in sewage to generate denitrification so as to remove total nitrogen and hydrolyze macromolecular protein; the sulfur particles and the scrap iron can promote the growth and enrichment of autotrophic denitrifying bacteria and strengthen the biological denitrification effect.
The outlet of the anaerobic chamber 6 is also connected with the inlet of the aerobic chamber 7 through a pipeline, and a peristaltic pump and an electromagnetic valve are also arranged on the pipeline.
An inlet of the aerobic chamber 7 is arranged at the lower part of one side wall of the aerobic chamber, an outlet is arranged at the upper part of one side wall of the aerobic chamber, a fifth perforated plate 71 and a sixth perforated plate 72 are arranged in the aerobic chamber 7 and are respectively positioned below the outlet and above the inlet of the anaerobic chamber 7, rope-shaped biological fillers and porous fillers are filled between the fifth perforated plate 71 and the sixth perforated plate 72, and an aeration blower 73 is arranged at the bottom of the aerobic chamber 7 to provide oxygen required for microbial metabolism. The diameter of the perforated plate needs to be smaller than that of the filler, so that the filler is prevented from entering the pipeline and blocking the pipeline.
The porous filler is made of polyurethane, ceramic or alumina, the particle size of the porous filler is at least two, denitrifying bacteria are adsorbed in the inner core by utilizing an immobilized microorganism embedding technology in the porous filler, then the denitrifying bacteria are embedded by an organic or inorganic polymer embedding material, and finally an external pore channel is formed secondarily; the rope-type biological filler can increase biomass and enhance the treatment effect of the aerobic chamber.
The sewage flowing into the aerobic chamber 7 flows into the pipeline at the outlet of the aerobic chamber 7 through the fifth perforated plate 72, the filler and the fourth perforated plate 71 in sequence, and flows into the settling chamber 8 from the inlet of the settling chamber 8 through the pipeline.
The inlet of the settling chamber 8 is arranged at the upper middle part of the settling chamber 8, and the outlet is arranged at the lower middle part of the settling chamber 8, so that disturbance to top scum and bottom sludge is avoided; the bottom of the settling chamber 8 is connected with the upper part of one side wall of the filtering chamber 3 through a return pipeline 9, and a sludge return pump 91 is arranged on the return pipeline 9 and used for periodically returning sludge in the settling chamber 8 to the filtering chamber 3.
The sewage flowing into the settling chamber 8 is settled and then flows out from the outlet of the settling chamber 8.
In the implementation, the electromagnetic valves arranged on the pipeline are all connected with the controller, and the controller is also used for controlling the opening and closing of the electromagnetic valves; the controller can judge whether the sewage treatment system is blocked or not by monitoring the numerical values of the first flowmeter and the second flowmeter and the state of the electromagnetic valve.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (10)
1. A sewage treatment system for rural sewage with low carbon-nitrogen ratio is characterized by comprising a sewage collecting tank, a filtering chamber, an anoxic chamber, an anaerobic chamber, an aerobic chamber and a settling chamber which are sequentially communicated in the water flow direction of sewage treatment, wherein,
a filtering membrane is obliquely arranged in the filtering chamber, a valve is arranged on the side wall of the filtering chamber connected with the lower end of the filtering membrane, the valve is arranged above the connection part of the filtering chamber and the lower end of the filtering membrane, and a filter residue pool is arranged at the bottom of the outer side surface of the filtering chamber;
the anaerobic chamber is internally provided with a first perforated plate and a second perforated plate, the anaerobic chamber is internally provided with a third perforated plate and a fourth perforated plate, and activated sludge, scrap iron, sponge biological filler and sulfur particles are filled between the first perforated plate and the second perforated plate and between the third perforated plate and the fourth perforated plate.
2. The sewage treatment system of rural sewage with low carbon-nitrogen ratio of claim 1, wherein a fifth perforated plate and a sixth perforated plate are arranged in the aerobic chamber, and a rope-type biological filler and a porous filler are filled between the fifth perforated plate and the sixth perforated plate.
3. The sewage treatment system of rural sewage with low carbon-nitrogen ratio of claim 1, wherein the sewage collection tank and the filter chamber are connected through a first pipeline, and a first flowmeter is arranged on the first pipeline; the filter chamber and the anoxic chamber are connected through a second pipeline, and a second flowmeter is arranged on the second pipeline.
4. The sewage treatment system of rural sewage with low carbon-nitrogen ratio of claim 3, wherein the first flow meter, the second flow meter and the valve are all connected with the controller.
5. The sewage treatment system of rural sewage with low carbon-nitrogen ratio of claim 3, wherein the first pipeline and the second pipeline are further provided with a peristaltic pump and an electromagnetic valve, and the electromagnetic valve is connected with the controller.
6. The sewage treatment system for rural sewage with low carbon-nitrogen ratio of claim 1, wherein a grating is obliquely arranged in the sewage collection tank.
7. The sewage treatment system of rural sewage with low carbon-nitrogen ratio of claim 1, wherein a sewage stirrer is arranged inside each of the anoxic chamber and the anaerobic chamber.
8. The sewage treatment system for rural sewage with low carbon-nitrogen ratio of claim 1, wherein the material of the porous filler is polyurethane, ceramic or alumina.
9. The sewage treatment system of rural sewage with low carbon-nitrogen ratio of claim 1, wherein the bottom of the aerobic chamber is provided with an aeration blower.
10. The sewage treatment system of rural sewage with low carbon-nitrogen ratio of claim 1, wherein the bottom of the settling chamber is connected with the filtering chamber through a return pipeline, and a sludge return pump is arranged on the return pipeline.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117658372A (en) * | 2023-12-22 | 2024-03-08 | 上海勘测设计研究院有限公司 | Sewage purification device and method for municipal pipe network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117658372A (en) * | 2023-12-22 | 2024-03-08 | 上海勘测设计研究院有限公司 | Sewage purification device and method for municipal pipe network |
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Address after: 266510 No. 9, Songhuajiang Road, Huangdao District, Qingdao City, Shandong Province Patentee after: Qingdao CRRC Times New Energy Material Technology Co.,Ltd. Address before: 266510 No. 9, Songhuajiang Road, Huangdao District, Qingdao City, Shandong Province Patentee before: QINGDAO ZHONGCHE HUAXUAN WATER Co.,Ltd. |
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