CN209957590U

CN209957590U - Compound ecological villages and small towns sewage AO processing apparatus

Info

Publication number: CN209957590U
Application number: CN201920155661.XU
Authority: CN
Inventors: 王伟亚; 张静; 张辉; 陈杭州
Original assignee: Anhui Guoshen Environment Protection And Energy Saving Science And Technology Co
Current assignee: Cecep Guozhen Environmental Protection Technology Co.,Ltd.
Priority date: 2019-01-29
Filing date: 2019-01-29
Publication date: 2020-01-17
Anticipated expiration: 2029-01-29

Abstract

The utility model provides a composite ecological village and town sewage AO treatment device, which relates to the field of sewage treatment and comprises a pool body, wherein the pool body is internally divided into an anoxic zone, a biochemical reaction zone and a gas stripping zone, and a reflux system is arranged; sewage enters the tank body through the water inlet, organic matters, ammonia nitrogen and suspended matters are removed through biochemical treatment in the anoxic zone, the biochemical reaction zone and the gas stripping zone, part of effluent returns to the anoxic zone through the reflux system to realize denitrification, and emergent aquatic plants on the water surface of each zone are absorbed through root systems to cooperatively remove part of pollutants; the device has simple and novel structure, small occupied area, stable and efficient sewage organic matter removal and denitrification capability by utilizing the coordination effect of sewage biochemical treatment and ecological restoration, low investment and energy consumption, strong impact load resistance, landscape ornamental value and suitability for decentralized treatment of sewage in villages and small towns.

Description

Compound ecological villages and small towns sewage AO processing apparatus

Technical Field

The utility model relates to a sewage treatment field, especially a compound ecological villages and small towns sewage AO processing apparatus.

Background

With the rapid development of rural economy, the living standard of farmers is greatly improved, the living style is greatly changed, the discharge amount of pollutants is gradually increased, and the quality of rural natural environment is seriously influenced. However, the construction of the rural environment infrastructure is asynchronous with the economic development, and the problem of water environment pollution is the most prominent. Untreated domestic sewage is discharged at will, so that water quality of ditches, ponds and the like is blackened and smelled, mosquitoes are bred, the health of residents is threatened, and drinking water source pollution and eutrophication of rivers and lakes are caused. Rural domestic sewage has the characteristics of large flow, high concentration, complex components, dispersed distribution and the like, so that rural domestic sewage treatment is widely concerned.

The sewage treatment system generally comprises a centralized system and a distributed system, at present, only a few rural areas with better economic development in China establish underground drainage systems to realize centralized sewage treatment, but most rural areas in the majority of areas have problems in domestic sewage treatment; moreover, according to the current national requirements on rural environmental quality, the requirement on effluent of factors such as nitrogen and phosphorus in sewage treatment is higher and higher, so a distributed sewage treatment system suitable for rural sewage treatment needs to be developed to solve the rural domestic sewage treatment problem on site.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compound ecological villages and small towns sewage AO processing apparatus.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a composite ecological village and town sewage AO treatment device comprises a pool body, wherein one end of the pool body is provided with a water inlet, and the other end of the pool body is provided with a water outlet; the tank body is divided into an anoxic zone, a biochemical reaction zone, a gas stripping zone and a water outlet zone in sequence along the direction from the water inlet to the water outlet; the upper part of the anoxic zone is communicated with the water inlet, and a submersible stirring device, anoxic reaction fillers and emergent aquatic plants are sequentially arranged in the anoxic zone from bottom to top; the biochemical reaction zone and the anoxic zone are separated by a first partition plate, a first water passing channel for communicating the biochemical reaction zone with the anoxic zone is arranged at the lower part of the first partition plate, and an aeration device, aerobic reaction fillers and emergent aquatic plants are sequentially arranged in the biochemical reaction zone from bottom to top; the air stripping area and the biochemical reaction area are separated by a second partition plate, a sludge discharge port is arranged at the lower part of the air stripping area, an air stripping device is arranged in the air stripping area, a fixed filler is arranged around the air stripping device, and emergent aquatic plants are arranged above the fixed filler; the air lifting device comprises a water lifting pipe and an air pipe communicated with the lower part of the water lifting pipe, and the top of the water lifting pipe is connected with a water baffle through at least two supporting rods; the water outlet area is communicated with the water outlet, the water outlet area is separated from the air stripping area through a third partition plate, and a second water passing channel for communicating the water outlet area with the air stripping area is arranged at the lower part of the third partition plate; be provided with the backward flow inlet tube in the play pool, the backward flow inlet tube is connected with the backwash pump, the backwash pump passes through backflow drain pipe and anoxic zone intercommunication.

Preferably, the anoxic reaction filler and the aerobic reaction filler are suspended fillers, honeycomb fillers, fixed fillers or combined fillers.

Preferably, the emergent aquatic plants are suspended on the water surface of the pool body by taking the artificial floating bed as a carrier.

Preferably, the water baffle is a circular plate, the circle center of the water baffle is opposite to the pipe center of the water lifting pipe, and the surface area of the water baffle is larger than the pipe diameter of the water lifting pipe.

Preferably, the water outlet is connected with a water discharge pipe, the sludge discharge port is connected with a sludge discharge pipe, and the water discharge pipe and the sludge discharge pipe share one discharge port.

The beneficial effects of the utility model reside in that: the utility model can complete the sewage treatment reaction process of villages and small towns in a pool body, sewage enters an anoxic zone from a water inlet, fully contacts with anoxic reaction filler under the action of a diving stirring device, then flows out from a first water passage below, enters a biochemical reaction zone, fully contacts with aerobic reaction filler under the action of an aeration device, overflows to an air stripping zone above a second partition plate, and is mixed with fixed filler for many times under the action of the air stripping device, so that pollutants are fully contacted with microorganisms on the filler, and the pollutant removal efficiency is increased; and the effluent of the gas stripping zone enters the water outlet zone from the second water passing channel, the water in the water outlet zone contains less organic matters and a large amount of nitrate nitrogen, and flows back to the anoxic zone through a reflux pipeline by a reflux pump, and the nitrate nitrogen is reduced into nitrogen by denitrification under the condition of no molecular oxygen, so that the denitrification efficiency is realized.

Compared with the traditional AO (anaerobic/Oxic) water treatment process, the utility model utilizes the biological contact oxidation technology, has less sludge production, replaces a secondary sedimentation tank with a gas stripping area, and is more beneficial to the sedimentation of sludge; meanwhile, emergent aquatic plants with developed root systems are planted in the anoxic zone, the biochemical reaction zone and the air stripping zone, the biochemical treatment and the ecological restoration of sewage are organically combined, organic matters, nitrogen, phosphorus and other nutrient elements are absorbed and removed by the plant root systems, dissolved oxygen can be released into water by the plant root systems, the attachment growth and the propagation of microorganisms are facilitated, and the emergent aquatic plants have the landscape beautifying effect.

The utility model has the advantages of simple and novel overall structure, the set is in a cell body, and area is little, and strong adaptability accords with the requirement of handling in situ of distributed rural sewage, and in practice, village and small town sewage is handled the back through the device, and organic matter, ammonia nitrogen, total nitrogen, suspended solid can reach the one-level A standard of "town sewage treatment plant pollutant emission standard" (GB 18918) and give other care of 2002) in the effluent, can directly discharge into the earth's surface waters.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

wherein: 1-pool body, 2-anoxic zone, 3-biochemical reaction zone, 4-air lifting zone, 5-reflux pump, 6-water outlet zone, 7-water inlet, 8-water outlet, 9-mud discharge port, 10-artificial floating bed, 11-emergent aquatic plant, 12-anoxic reaction filler, 13-frame, 14-support, 15-submerged stirring device, 16-aerobic reaction filler, 17-aeration device, 18-fixed filler, 19-water extraction pipe, 20-air pipe, 21-fixed frame, 22-water baffle, 23-supporting rod, 24-first baffle, 25-second baffle, 26-third baffle, 27-reflux water inlet pipe, 28-reflux water outlet pipe, 29-water outlet pipe, 30-mud discharge pipe, 31-a first water passage and 32-a second water passage.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

referring to fig. 1, the composite ecological village and town sewage AO treatment device comprises a tank body 1, wherein one end of the tank body 1 is provided with a water inlet 7, and the other end of the tank body is provided with a water outlet 8.

The interior of the tank body 1 is divided into an anoxic zone 2, a biochemical reaction zone 3, a gas stripping zone 4 and a water outlet zone 6 in sequence along the direction from a water inlet 7 to a water outlet 8.

The upper portion and the water inlet 8 intercommunication in

anoxic zone

2, 2 bottoms in anoxic zone are fixed with dive agitating unit 15, dive agitating unit 15 top through support 14 installation frame 13, bear the weight of the oxygen deficiency reaction filler 12 on the frame 13, the top surface of water of oxygen deficiency reaction filler 12 is planted through artifical floating bed 10 and is had emergent aquatic plants 11.

The biochemical reaction area 3 is separated from the anoxic area 2 by a first partition plate 24 (the partition plate can adopt a form of a flashboard, and the space below the installation and adjustment is convenient), a first water passing channel 31 for communicating the biochemical reaction area 3 with the anoxic area 2 is arranged at the lower part of the first partition plate 24, an aeration device 17 is fixed at the bottom of the biochemical reaction area 3, a frame 13 is also installed above the aeration device 17 by a support 14, the frame 13 bears aerobic reaction fillers 16, and emergent aquatic plants 11 are planted on the upper water surface of the aerobic reaction fillers 16 through the artificial floating bed 10.

The anoxic reaction filler 12 and the aerobic reaction filler 16 may be selected from suspended filler, honeycomb filler, fixed filler or combined filler.

The gas stripping area 4 and the biochemical reaction area 3 are separated by a second partition plate 25, in this embodiment, a fixing frame 21 is installed at the upper part of the gas stripping area 4, the fixing frame 21 is fixedly connected with a platform carried at the top of the tank body 1, the bottom of the fixing frame 21 is hollowed out to allow water to enter, and the peripheral wall of the fixing frame 21 is closed (to ensure that the water is lifted to the fixed packing 18 from bottom to top).

The center of the fixed frame 21 is provided with an air lifting device, fixed fillers 18 are arranged around the air lifting device, and emergent aquatic plants 11 are planted on the upper water surface of the fixed fillers 18 through the artificial floating bed 10.

The air lifting device comprises a water lifting pipe 19 and an air pipe 20 (the air lifting principle of the conventional air lifting device can be referred to) communicated with the lower part of the water lifting pipe 19, and the top of the water lifting pipe 19 is connected with a water baffle 22 through two support rods 23.

In a preferred embodiment, the water baffle 22 is a circular plate, the center of the circular plate 22 is opposite to the pipe center of the water lifting pipe 19, and the surface area of the water baffle 22 is larger than the pipe diameter of the water lifting pipe 19; the air-lifted water will contact the water baffle 22 and then spill over to the surrounding stationary packing 18.

The water outlet zone 6 is communicated with the water outlet 8, the water outlet zone 6 is separated from the air stripping zone 4 through a third partition plate 26, and a second water passing channel 32 for communicating the water outlet zone 6 with the air stripping zone 4 is arranged at the lower part of the third partition plate 26; in this embodiment, for the convenience of arrangement in the tank body, the water outlet region 6 is designed in the fixing frame 21 and is separated by the third partition plate 26 in cooperation with the water outlet 8 at the upper part of the tank body 1, and in practice, a person skilled in the art can also separate the water outlet region independently in the tank body by referring to the form of the first partition plate 24 between the anoxic region 2 and the biochemical reaction region 3.

The water outlet 8 is connected with a drain pipe 29 for discharging the treated water, and the lower part of the air stripping area 4 is provided with a sludge discharge port 9 connected with a sludge discharge pipe 30 for discharging sludge, because the sludge production of the device is less, the drain pipe 29 and the sludge discharge pipe 30 can share one discharge port for saving pipelines.

A backflow water inlet pipe 27 is arranged in the water outlet area 6, the backflow water inlet pipe 27 is connected with a backflow pump 5 on a platform at the top of the tank body 1, and the backflow pump 5 is communicated with the anoxic area 2 through a backflow water outlet pipe 28. Forming a reflux system.

The working principle of the utility model is as follows: sewage is conveyed into an anoxic zone 2 of the tank body 1 from a water inlet 7, and is fully contacted with an anoxic reaction filler 12 in the anoxic zone 2 through the stirring of a submersible stirring device 15, so that a part of organic matters and suspended matters are removed, and organic nitrogen and the like are aminated to form ammonia nitrogen.

The effluent of the anoxic zone 2 flows to the biochemical reaction zone 3 from a first water channel 31 below the first partition plate 24, the water rises to fully contact with the aerobic reaction filler 16 under the aeration and stirring action of the aeration device 17, a large amount of organic matters are removed through absorption and digestion of microorganisms under an aerobic environment, and most of ammonia nitrogen is converted into nitrate nitrogen through nitrification; then the effluent containing organic matters, ammonia nitrogen, nitrate nitrogen and the like overflows into the stripping area 4 from the upper end of the second clapboard 25 between the biochemical reaction area 3 and the stripping area 4.

Then the water flow at the lower part is extracted by a water lifting pipe 19 of the air lifting device and is fully mixed with the oxygen transmitted by an air pipe 20 to rise, then the water flow contacts a water baffle 22 to be sprayed to the fixed filler 18 at the periphery, the sprayed water flow simultaneously has drop water oxygenation, and the water flow is contacted with the fixed filler 18 for multiple times through multiple times of suction to further remove organic matters and ammonia nitrogen.

Effluent of the gas stripping zone 4 flows into a water outlet zone 6, at the moment, water in the water outlet zone 6 also contains less organic matters and a large amount of nitrate nitrogen, then a reflux pump 5 of a reflux system returns water to the anoxic zone 2 through a reflux pipeline, and nitrate nitrogen is reduced into nitrogen by denitrification under the condition of no molecular oxygen, so that denitrification efficiency is realized; then the water is treated again by the anoxic zone 2, the biochemical reaction zone 3 and the gas stripping zone 4 and returns to the water outlet zone 6, and after the final treatment is finished, the valve of the water outlet 8 is opened to discharge the water through the water discharge pipe 29.

In the treatment process, emergent aquatic plants 11 are planted in the artificial floating bed 10 and float on the surfaces of the anoxic zone 2, the biochemical reaction zone 3 and the air stripping zone 4; emergent aquatic plants with developed root systems can absorb and stabilize organic matters and nutrient elements such as nitrogen and phosphorus in water, and meanwhile, the root systems of the emergent aquatic plants can release dissolved oxygen and increase microorganism attachment growth and propagation places when being immersed under water, so that the synergistic cooperation of biochemical treatment and ecological restoration is realized, and the pollutant removal capacity is enhanced.

The mud production of this device is few, when producing mud accumulation when great, then can open the valve of mud discharging port 9, utilizes equipment such as dredge pump to take mud out from mud pipe 30 and transports away.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides a compound ecological villages and small towns sewage AO processing apparatus, includes the cell body, its characterized in that: one end of the tank body is provided with a water inlet, and the other end of the tank body is provided with a water outlet; the tank body is divided into an anoxic zone, a biochemical reaction zone, a gas stripping zone and a water outlet zone in sequence along the direction from the water inlet to the water outlet; the upper part of the anoxic zone is communicated with the water inlet, and a submersible stirring device, anoxic reaction fillers and emergent aquatic plants are sequentially arranged in the anoxic zone from bottom to top; the biochemical reaction zone and the anoxic zone are separated by a first partition plate, a first water passing channel for communicating the biochemical reaction zone with the anoxic zone is arranged at the lower part of the first partition plate, and an aeration device, aerobic reaction fillers and emergent aquatic plants are sequentially arranged in the biochemical reaction zone from bottom to top; the air stripping area and the biochemical reaction area are separated by a second partition plate, a sludge discharge port is arranged at the lower part of the air stripping area, an air stripping device is arranged in the air stripping area, a fixed filler is arranged around the air stripping device, and emergent aquatic plants are arranged above the fixed filler; the air lifting device comprises a water lifting pipe and an air pipe communicated with the lower part of the water lifting pipe, and the top of the water lifting pipe is connected with a water baffle through at least two supporting rods; the water outlet area is communicated with the water outlet, the water outlet area is separated from the air stripping area through a third partition plate, and a second water passing channel for communicating the water outlet area with the air stripping area is arranged at the lower part of the third partition plate; be provided with the backward flow inlet tube in the play pool, the backward flow inlet tube is connected with the backwash pump, the backwash pump passes through backflow drain pipe and anoxic zone intercommunication.

2. The composite ecological village and town sewage AO treatment device of claim 1, wherein: the anoxic reaction filler and the aerobic reaction filler are suspension filler, honeycomb filler, fixed filler or combined filler.

3. The composite ecological village and town sewage AO treatment device of claim 1, wherein: the emergent aquatic plants are suspended on the water surface of the pool body by taking the artificial floating bed as a carrier.

4. The composite ecological village and town sewage AO treatment device of claim 1, wherein: the water baffle is a circular plate, the circle center of the water baffle is opposite to the pipe center of the water lifting pipe, and the surface area of the water baffle is larger than the pipe diameter of the water lifting pipe.

5. The composite ecological village and town sewage AO treatment device of claim 1, wherein: the water outlet is connected with a water discharge pipe, the sludge discharge port is connected with a sludge discharge pipe, and the water discharge pipe and the sludge discharge pipe share one discharge port.