CN212669469U - Distributed sewage treatment device - Google Patents

Distributed sewage treatment device Download PDF

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Publication number
CN212669469U
CN212669469U CN201921599991.4U CN201921599991U CN212669469U CN 212669469 U CN212669469 U CN 212669469U CN 201921599991 U CN201921599991 U CN 201921599991U CN 212669469 U CN212669469 U CN 212669469U
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China
Prior art keywords
treatment tank
tank
cavity
anaerobic treatment
pipe
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Expired - Fee Related
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CN201921599991.4U
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Chinese (zh)
Inventor
吴凯
顾晋饴
李凌琪
李舒
张丹
刘姝芳
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Yellow River Institute of Hydraulic Research
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Yellow River Institute of Hydraulic Research
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  • Biological Treatment Of Waste Water (AREA)

Abstract

The invention discloses a distributed sewage treatment device, which comprises an anaerobic treatment tank, an aerobic treatment tank and a filtering tank which are sequentially connected in series; the anaerobic treatment tank is provided with a water inlet pipe which is directly communicated with the cavity bottom, and the top side of the anaerobic treatment tank is provided with an overflow pipe which is connected with the top side of the aerobic treatment tank; a plurality of packing layers are arranged in the aerobic treatment tank, an aeration pipe is arranged at the bottom of the cavity, and a water outlet pipe at the bottom side is connected with the bottom side of the filter tank; a plurality of adsorption layers are arranged in the filter tank, and a water outlet is formed in the top side; and the height of the overflow pipe is greater than that of the water outlet. The structure is reasonable in design, simple and easy to maintain, convenient to operate and low in manufacturing cost; the device has the advantages that materials in the device can be easily obtained in rural areas, the device is not easy to lose, the cost is low, the sewage purification effect is good, COD, BOD, sludge, suspended matters, colloid particles and microorganisms in the sewage are effectively removed, nitrogen and phosphorus removal is enhanced, the device can be discharged on site, the water pollution source in the rural areas is effectively reduced, the utilization rate of water resources is improved, the device is green and energy-saving, and the device has strong practicability and wide applicability.

Description

Distributed sewage treatment device
Technical Field
The invention relates to a sewage treatment device, in particular to a distributed sewage treatment device, and belongs to the technical field of sewage treatment.
Background
The rural area of China is wide, residents in rural areas are scattered, the difference between the economic level and the living habits is large, and the source, the water quality and the water quantity of rural domestic sewage are complex and various, so that the complexity of aspects such as selection of rural domestic sewage treatment process, engineering construction and investment, operation management mode and the like is determined.
In rural areas with dispersed residents, the construction of a large-area and long-distance sewage collecting and collecting pipe network system has the problems of high investment, leakage and the like in long-distance sewage conveying, and the sewage collecting rate is not high, so that the centralized treatment method is not suitable for treatment.
The existing technology suitable for rural domestic sewage decentralized treatment can be divided into two types according to different treatment modes: one type is a traditional biological treatment mode, comprising an aeration tank, a biological filter, an oxidation ditch, an SBR reactor and the like, and the treatment process has the advantages of stable effluent quality, low capital construction cost, small occupied area, complex management and higher operation cost; the second type is a land treatment method, such as a stabilization pond, an artificial wetland and the like, and the treatment process has the advantages of high pollutant removal rate, simple management, low operation cost, large occupied area and relatively high capital expenditure.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a distributed domestic sewage treatment device suitable for rural areas.
In order to achieve the above object, the present invention adopts the following technical solutions:
a distributed sewage treatment device comprises an anaerobic treatment tank, an aerobic treatment tank and a filtering tank which are connected in series in sequence;
the anaerobic treatment tank is provided with a water inlet pipe which is directly communicated with the cavity bottom, and the top side of the anaerobic treatment tank is provided with an overflow pipe which is connected with the top side of the aerobic treatment tank;
a plurality of packing layers are arranged in the aerobic treatment tank, an aeration pipe is arranged at the bottom of the cavity, and a water outlet pipe at the bottom side is connected with the bottom side of the filter tank;
the filter tank is internally provided with a plurality of layers of adsorption layers, and the water outlet is arranged on the top side.
The height of the overflow pipe is greater than that of the water outlet.
The cavity of the anaerobic treatment tank is internally provided with a plurality of layers of baffle plates.
Furthermore, the baffle plates are fixed on the inner wall of the cavity of the anaerobic treatment tank in a staggered manner, the width of each baffle plate is the same as the width of the cavity of the anaerobic treatment tank, and the length of each baffle plate is smaller than the length of the cavity of the anaerobic treatment tank.
The top of the anaerobic treatment tank is provided with a methane valve, and the bottom side of the anaerobic treatment tank is provided with a sludge discharge port.
A plurality of water distribution pipes connected with an overflow pipe are uniformly distributed at the top of the aerobic treatment tank.
The filler layer includes polyurethane foam.
Furthermore, the polyurethane foam is placed in the aerobic treatment pool cavity in a natural accumulation shape.
The adsorption layer comprises a blast furnace slag layer and a zeolite layer; and the blast furnace slag layer is arranged at the bottom of the zeolite layer.
The pipe orifice of the water outlet pipe is provided with a screen.
The invention has the advantages that:
the invention relates to a distributed sewage treatment device which is formed by sequentially connecting an anaerobic treatment tank, an aerobic treatment tank and a filter tank in series; COD and BOD in water can be largely removed through anaerobic digestion of the anaerobic treatment tank, and the hydraulic retention time of sewage and the contact area of the sewage and activated sludge are increased by the baffle plates staggered in the anaerobic areas, so that the sewage and anaerobic bacteria fully react; the filler in the aerobic treatment area is in a fluidized state under the action of aeration airflow, and has no blocking phenomenon, and the active sludge attached to the filler decomposes organic matters into inorganic matters; the filtering process of the filtering tank can further retain and remove suspended matters, colloidal particles and microorganisms in water, and meanwhile, the addition of the specific adsorption layer enhances the effects of nitrogen and phosphorus removal, so that the effluent reaches the quality standard of miscellaneous living water, and the water use condition of rural water-deficient areas is relieved.
The distributed sewage treatment device is reasonable in structural design, simple and easy to maintain, convenient to operate and low in manufacturing cost; the device has the advantages that materials in the device can be easily obtained in rural areas, the device is not easy to lose, the cost is low, the sewage purification effect is good, the sewage can be discharged on site, the water pollution source in the rural areas is effectively reduced, the utilization rate of water resources is improved, the device is green and energy-saving, and the device has strong practicability and wide applicability.
Drawings
FIG. 1 is a schematic structural diagram of a decentralized wastewater treatment plant according to the invention.
The designations in the drawings have the following meanings: 1. the device comprises a water inlet pipe, 2, a sealing cover, 3, an anaerobic treatment tank, 4, a baffle plate, 5, a sludge discharge port, 6, a biogas valve, 7, an overflow pipe, 8, an aerobic treatment tank, 9, polyurethane foam, 10, an aeration pipe, 11, a filter tank, 12, blast furnace slag, 13, zeolite, 14 and a water outlet.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
As shown in figure 1, the distributed sewage treatment device consists of an anaerobic treatment tank 3, an aerobic treatment tank 8 and a filtering tank 11 which are connected in series in sequence.
The top of the anaerobic treatment tank 3 is provided with a sealing cover 2 with a methane valve 6, and the bottom side is provided with a sludge discharge port 5; the water inlet pipe 1 penetrates through the sealing cover 2 to be arranged at the center of the cavity of the anaerobic treatment tank 3 and is directly communicated with the bottom of the cavity from the top; 3 layers of baffle plates 4 are arranged in the cavity, the width of each baffle plate 4 is the same as the width in the cavity of the anaerobic treatment pool 3, and the length of each baffle plate 4 is 3/4 of the length in the cavity of the anaerobic treatment pool 3; the layers are fixed on the inner wall of the anaerobic treatment tank 3 in a staggered way, and the interval of the layer height is 0.3-0.5 m.
The biogas valve 6 is externally connected with a corresponding gas purification system.
The anaerobic treatment tank 3 is connected with the aerobic treatment tank 8 through an overflow pipe 7 at the top side, water distribution pipes connected with the overflow pipe 7 are uniformly arranged at the top of the cavity of the aerobic treatment tank 8, and aeration pipes 10 are uniformly arranged at the bottom of the cavity; the polyurethane foam 9 is placed in the cavity in a naturally piled state to constitute a filler layer.
The aerobic treatment tank 8 is connected with the filter tank 11 through a water outlet pipe at the bottom side, and a screen is arranged at the pipe orifice of the water outlet pipe; a double-layer adsorption layer is arranged in the cavity of the filtering tank 11, and comprises a blast furnace slag 12 layer with the bottom height of 40-50cm and a zeolite 13 layer with the top height of 20-30 cm; the water outlet 14 is arranged on the top side of the filtering tank 11.
The overflow outlet of the overflow pipe 7 is higher than the baffle plate 4, and a height difference is kept between the overflow pipe and the sealing cover 2. The height of the overflow tube 7 is greater than the height of the outlet 14.
When in use:
sewage gets into the cavity bottom from the sealed lid 2 at 3 tops in anaerobic treatment pond through inlet tube 1, under the high-speed impact of the rivers of intaking, bottom sewage mixes with mud, sewage flows by lower up through crisscross clearance between baffling board 4 under the pressure effect, baffling board 4 has guaranteed that rivers are not linear motion at the in-process that rises, the flow of sewage in anaerobic zone has been prolonged, sewage rises the in-process simultaneously, rivers frequently collide with baffling board 4, sewage mixing is effectual, the ascending in-process of particulate matter receives more easily after the collision and subsides to bottom or baffling board 4 on, not only strengthened the treatment effect to the organic matter, can also effectively reduce the suspended solid content in the sewage.
The sewage which rises enters the aerobic treatment tank 8 from the overflow pipe 7, the marsh gas generated by anaerobic fermentation rises to the top, escapes from the marsh gas valve 6 on the sealing cover 2, is collected by a corresponding gas purification system, and the sludge is discharged from the sludge discharge port 5.
The sewage entering the aerobic treatment tank 8 is uniformly distributed under the action of the water distribution pipe and flows from top to bottom to form drop aeration, meanwhile, the aeration pipe 10 at the bottom continuously aerates, under the action of aeration airflow, the polyurethane foam 9 filler inside is in a fluidized state, and pollutants are decomposed by aerobic microorganisms attached to the polyurethane foam 9 filler.
The sewage after the aerobic treatment horizontally flows into a filter tank 11 after being intercepted by a screen from the bottom of an aerobic treatment tank 8; the mixture passes through a blast furnace slag 12 filler layer, enters a zeolite 13 filler layer upwards and is finally discharged from a water discharge port. The blast furnace slag 12 can adsorb phosphorus in the sewage, and the zeolite 13 can adsorb a large amount of ammonia nitrogen in the sewage and a small amount of phosphorus.
By utilizing the gravity of water flow and the height difference of the pipes, the water flow is ensured to flow through each filtering device in sequence without the help of external force through overflow and is discharged from the water outlet, and the sewage purification is finished.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.

Claims (6)

1. A distributed sewage treatment device is characterized by comprising an anaerobic treatment tank, an aerobic treatment tank and a filtering tank which are sequentially connected in series;
the anaerobic treatment tank is provided with a water inlet pipe which is directly communicated with the cavity bottom, and the top side of the anaerobic treatment tank is provided with an overflow pipe which is connected with the top side of the aerobic treatment tank;
a plurality of packing layers are arranged in the aerobic treatment tank, an aeration pipe is arranged at the bottom of the cavity, and a water outlet pipe at the bottom side is connected with the bottom side of the filter tank;
a plurality of adsorption layers are arranged in the filter tank, and a water outlet is formed in the top side;
a plurality of layers of baffle plates are arranged in the cavity of the anaerobic treatment tank; the baffle plates are fixed on the inner wall of the cavity of the anaerobic treatment tank in a staggered manner, the width of each baffle plate is the same as the width of the cavity of the anaerobic treatment tank, and the length of each baffle plate is smaller than the length of the cavity of the anaerobic treatment tank; a plurality of water distribution pipes connected with an overflow pipe are uniformly distributed at the top of the aerobic treatment tank; the adsorption layer comprises a blast furnace slag layer and a zeolite layer; and the blast furnace slag layer is arranged at the bottom of the zeolite layer.
2. The decentralized wastewater treatment plant according to claim 1, characterized in that the overflow pipe has a height greater than the height of the water outlet.
3. The decentralized wastewater treatment plant according to claim 1, wherein the anaerobic treatment tank is provided with a biogas valve at the top and a sludge discharge port at the bottom.
4. The decentralized wastewater treatment plant according to claim 1, characterized in that the filler layer comprises polyurethane foam.
5. The distributed sewage treatment apparatus according to claim 4, wherein the polyurethane foam is placed in a natural heap in the aerobic treatment tank cavity.
6. The decentralized wastewater treatment device according to claim 1, wherein the orifice of the outlet pipe is provided with a screen.
CN201921599991.4U 2019-09-25 2019-09-25 Distributed sewage treatment device Expired - Fee Related CN212669469U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921599991.4U CN212669469U (en) 2019-09-25 2019-09-25 Distributed sewage treatment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921599991.4U CN212669469U (en) 2019-09-25 2019-09-25 Distributed sewage treatment device

Publications (1)

Publication Number Publication Date
CN212669469U true CN212669469U (en) 2021-03-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921599991.4U Expired - Fee Related CN212669469U (en) 2019-09-25 2019-09-25 Distributed sewage treatment device

Country Status (1)

Country Link
CN (1) CN212669469U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113292204A (en) * 2021-06-08 2021-08-24 生态环境部南京环境科学研究所 Rural waste water AO processing apparatus and rural waste water processing system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113292204A (en) * 2021-06-08 2021-08-24 生态环境部南京环境科学研究所 Rural waste water AO processing apparatus and rural waste water processing system
CN113292204B (en) * 2021-06-08 2022-12-23 生态环境部南京环境科学研究所 Rural waste water AO processing apparatus and rural waste water processing system

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210309

Termination date: 20210925

CF01 Termination of patent right due to non-payment of annual fee