CN207016650U - A kind of countryside sewage treatment equipment - Google Patents

Abstract

The utility model provides a rural sewage treatment device, which belongs to the technical field of sewage treatment. It specifically includes the primary sedimentation tank, reaction tank and water collection tank; the reaction tank includes the first pool body, the second pool body, the diversion tube and the third pool body, the second pool body is set in the first pool body, and the diversion tube is reversed On the second pool body, the third pool body is annularly arranged on the periphery of the first pool body, and a ring-shaped fixing plate is arranged between the inner wall of the first pool body and the outer wall of the guide tube. Gas device; the primary settling tank is connected to the second pool body through the water inlet pipe, and the water collection tank is connected to the third pool body through the drain pipe. The device is a buried integrated structure, which is suitable for sewage treatment in the vast northern rural areas. It has a good heat preservation function, high efficiency in wastewater treatment, low construction cost, simple structure, and small footprint.

Description

A rural sewage treatment device

technical field

The utility model belongs to the technical field of sewage treatment, in particular to a rural sewage treatment device.

Background technique

With the development of new countryside and the improvement of people's living standards, the discharge of village wastewater is increasing, and the negative impact on the agricultural ecological environment and water environment is also becoming more and more serious. The problem of water pollution in my country's rural areas has become increasingly prominent. Due to the weak rural infrastructure and the lack of a complete sewage collection and discharge system, untreated sewage is directly discharged to nearby water bodies in street ditches, seriously polluting the water body environment, and farmland sewage irrigation and random flow are common. In order to improve the rural living environment and improve the quality of rural water environment, it is necessary to strengthen the treatment and disposal of rural domestic sewage.

Although people began to pay attention to the treatment of rural domestic sewage and experienced a lot of research and attempts, generally speaking, the treatment of rural domestic sewage in our country is still in its infancy. Restricted by the level of economic and social development, regional characteristics, natural and geographical conditions, and environmental objectives, most rural areas should adopt sewage treatment technologies that are efficient, low-consumption, simple, reliable, and integrated with the local natural environment. Although people have tried to use the natural treatment system to effectively treat rural domestic sewage, the natural treatment system is greatly affected by climatic conditions, especially the low temperature period in northern my country lasts for a long time, and the purification effect of the natural treatment system is obviously affected. It is said that the biological enhanced treatment system has obvious advantages in terms of purification effect, floor area, and climate adaptability.

CN 105731735 A discloses an integrated rural sewage treatment device, which includes sequentially connected filter tanks, facultative tanks, aerobic tanks, MBR membrane bioreaction tanks and disinfection tanks, and drainage pipes connected to the disinfection tanks; The top is provided with a filter bag, and the bottom of the filter tank is provided with a floc filtering device; the aerobic tank is connected to the filter tank through the first pipeline; The aerobic tank is connected with the facultative tank through the second pipeline; the second packing assembly is arranged in the aerobic tank, and the second aeration disc is arranged at the bottom of the aerobic tank; the MBR membrane bioreaction tank is connected with the aerobic tank through the third pipeline. The oxygen tank is connected, and the MBR membrane bioreaction tank is equipped with an MBR membrane module and an automatic membrane cleaning device. The bottom of the MBR membrane bioreaction tank is equipped with a third aeration tray and a sewage pipe; Connected, the disinfection pool is equipped with an ultraviolet sterilizing lamp. The device has the problems of large occupied area, complex equipment, etc., and is difficult to popularize and apply.

Utility model content

The purpose of the utility model is to provide a rural domestic sewage treatment device in order to solve the problems of low efficiency of rural domestic sewage treatment, large occupied area and complex equipment in the vast rural areas of northern China.

The rural sewage treatment device provided by the utility model includes a primary sedimentation tank, a reaction tank and a sump; The upper part of the body is open, and the top of the side wall is annularly provided with a drainage gap, the second pool body is arranged in the first pool body, the height of the second pool body is smaller than that of the first pool body, and the upper part of the second pool body Open, and the bottom is filled with anaerobic sludge, the top of the side wall is a smooth tooth-like structure, the guide tube is buckled on the second pool body, and the distance from the bottom of the first pool body is 40-50cm , the tooth-like structure at the top of the side wall of the second pool is in contact with the inner bottom of the guide tube, the third pool is annularly arranged on the periphery of the first pool, and the top of the third pool is in contact with the bottom of the inner side of the guide tube. The first pool body is flat, and the bottom is higher than the bottom of the first pool body; an annular fixing plate is provided between the inner wall of the first pool and the outer wall of the guide tube, and the upper part of the annular fixing plate is filled with Biological filler, with an aeration device installed below; the side wall of the primary sedimentation tank is connected with a water inlet pipe on the upper side, and the water inlet pipe passes through the side wall of the first pool body, the side of the guide tube and the side of the second pool body in sequence wall, enters the second pool body, the water inlet pipe communicates with the vertically downward water distribution pipe, and the lower end surface of the water distribution pipe is 50-100cm away from the bottom of the second pool body; The third pool body is connected.

Preferably, the first pool body, the second pool body and the third pool body are all concrete pools, and the guide tube is made of carbon steel, and the surface is coated with an anti-corrosion layer.

More preferably, a filtering device is also provided in the primary sedimentation tank, and the filtering device is detachably fixed at the water inlet of the water inlet pipe.

More preferably, the third pool body is provided with a cover plate, the middle part of the cover plate is provided with a first exhaust pipe, and the top of the first exhaust pipe is provided with a rainproof cap; A second exhaust pipe is provided, and the second exhaust pipe passes through the first exhaust pipe.

More preferably, the aeration device includes an annular aeration pipe, and the annular aeration pipe is connected to a fan outside the third tank.

More preferably, the drainage gap has the shape of a battlement crenel.

More preferably, the first pool body, the second pool body, the diversion cylinder and the third pool body are all cylindrical and coaxially arranged, the inner diameter of the first pool body is 3-4m, and the inner diameter of the second pool body is The inner diameter is 1-1.5m, the inner diameter of the third pool body is 4-5m, the inner diameter of the guide tube is 2-2.5m; the height of the first pool body is 3.5m, and the second pool body The height is 3m.

More preferably, the bottom of the third pool body is 2.0-2.5m away from the bottom of the first pool body, and the top is flush with the top of the first pool body.

More preferably, the water distribution pipe has a horn-shaped structure.

The rural sewage treatment device provided by the utility model has the following beneficial effects:

(1) The device is a buried integrated structure, which is suitable for sewage treatment in the vast northern rural areas. It has a good heat preservation function, and the sewage will not freeze in winter, which is conducive to the survival of microorganisms.

(2) The sewage to be treated enters the anaerobic, anoxic and aerobic environments successively after sedimentation and filtration in this device, combined with biochemical treatment, in this process, the water flow stays for a long time and the wastewater treatment efficiency is high.

(3) The device has a simple structure and low construction cost, and is suitable for areas with scattered rural populations, where dozens of households can share one sewage treatment device.

(4) The main structure of the device is a concrete structure with low construction cost and simple structure. The power equipment only uses fans for aeration, and the overall structure is a sleeve type structure with a small footprint.

Description of drawings

Fig. 1 is the structural representation of the rural sewage treatment device provided by the utility model;

Fig. 2 is the structural representation of the first pool body in Fig. 1;

Fig. 3 is a schematic diagram of the relative position and structure of the first cell body and the second cell body in Fig. 1 .

detailed description

In order to enable those skilled in the art to better understand that the technical solution of the utility model can be implemented, the utility model will be further described below in conjunction with the accompanying drawings and specific examples, but the examples given are not intended to limit the utility model.

A kind of rural sewage treatment device of present embodiment, specifically as shown in Figure 1-3, comprises primary settling tank 101, reaction tank and sump 3; 203 and the third pool body 204, the upper part of the first pool body 201 is open, and the top of the side wall is annularly provided with a drainage gap, the drainage gap can be the shape of a city wall crenel, or a similar shape to it, the second pool The body 202 is set in the first pool body 201, the height of the second pool body 202 is smaller than the first pool body 201, the upper part of the second pool body 202 is open, and the bottom is filled with anaerobic sludge, and the top of the side wall is a smooth tooth-like structure , the guide tube 203 is buckled upside down on the second pool body 202, and is 50 cm away from the bottom of the first pool body 201, the tooth-like structure at the top of the side wall of the second pool body 202 is in contact with the inner bottom of the guide tube 203, and the third The pool body 204 is annularly arranged on the periphery of the first pool body 201, the top of the third pool body 204 is flush with the first pool body 201, and the bottom is higher than the bottom of the first pool body 201; the inner wall of the first pool body 201 and the outer wall of the guide tube 203 There is an annular fixing plate 205 between them, the top of the annular fixing plate 205 is filled with a biological filler layer 206, and the bottom is installed with an aeration device; the upper side wall of the primary sedimentation tank 101 is connected with a water inlet pipe, and the water inlet pipe passes through the first tank in turn The side wall of body 201, the side of guide tube 203 and the side wall of second pool body 202 enter into the second pool body 202, and a filter screen is also provided in the primary sedimentation tank 101, and the filter screen is detachably fixed on the water inlet of the water inlet pipe The water inlet pipe communicates with the vertically downward water distribution pipe 102, and the lower end surface of the water distribution pipe 102 is 60 cm away from the bottom of the second pool body 202;

The sewage treatment device used is buried, and the main structure is built underground. When treating sewage, the raw water enters the concrete primary settling tank 101 for preliminary sedimentation. High, the upper clear water passes through the filter screen 103 to intercept suspended matter, and flows in through the water inlet pipe set at a high position, and flows into the second pool body 202 along the water distribution pipe 102, which can be set in a trumpet-shaped structure, which can make the water flow and sludge larger area contact. Since the lower end surface of the water distribution pipe 102 is 60 cm away from the bottom of the second pool body 202, the water flow causes the anaerobic sludge at the bottom of the second pool body 202 to rise, and anaerobic reactions are performed on the organic matter in the water, and the complex organic matter is degraded into simple and stable compounds, and the organic nitrogen is converted Ammonia nitrogen, the water in the second pool body 202 slowly rises, the water flows through the tooth-shaped structure overflow on the top of the side wall of the second pool body 202, flows downward through the guide tube 203, and flows along the second pool body 202 The gap between the outer wall and the inner wall of the guide cylinder 203 flows to the bottom of the first pool body 201 and enters the anoxic environment, and then the water flows along the space between the outer wall of the guide tube 203 and the inner wall of the first pool body 201 Slowly rise and enter the aerobic environment. The aerobic environment is equipped with biological fillers, and an aeration device is installed under the biological fillers. The ammonia nitrogen from the anaerobic environment is converted into nitrate under the action of nitrifying bacteria and nitrosifying bacteria. Phosphorus accumulating bacteria absorb a large amount of dissolved orthophosphate from wastewater to complete the process of phosphorus accumulation, thereby completing the further degradation of organic matter and denitrification and phosphorus removal. The aerobically treated upper layer water flows through the outer periphery of the first pool body 201 and enters the third pool body 204, and the water in the third pool body 204 is discharged to the In the sump 3, the treated water can be used for agricultural irrigation and further utilization.

It should be noted that the above-mentioned first pool body 201, second pool body 202, and third pool body 204 are preferably constructed of concrete, which is low in construction cost and durable. The barrel 203 is made of carbon steel, and the surface is coated with an anti-corrosion layer.

During the sewage treatment process of this device, since some gas generated by anaerobic reaction will be accumulated in the top of the guide tube 203 during use, a second exhaust pipe for guiding and discharging the gas is specially provided on the top of the guide tube 203 209. In consideration of safety, the third pool body 204 is also provided with a cover plate, and the middle part of the cover plate is provided with a first exhaust pipe 210, which is used to guide and discharge some gases generated in the first pool body 101 when the pool body is sealed. The second exhaust pipe 209 is installed in the first exhaust pipe 210, one pipe diameter is larger and the other pipe diameter is small, in order to prevent rainwater from entering the device, a rainproof cap is specially provided on the top of the first exhaust pipe 210;

It should be further explained that the above-mentioned aeration device includes an annular aeration pipe 207 , and the annular aeration pipe 207 is connected with a fan 208 outside the third pool body 204 .

Preferably, the first pool body 201, the second pool body 202, the guide cylinder 203 and the third pool body 204 in the device can all be cylindrical and arranged coaxially with each other. During construction, the conventional Please refer to the following data for the size. The inner diameter of the first pool body 201 is 3-4m, the inner diameter of the second pool body 202 is 1-1.5m, the inner diameter of the third pool body 204 is 4-5m, and the inner diameter of the flow guide tube 203 The height of the first pool body 201 is 3.5m, and the height of the second pool body 202 is 3m; the bottom of the third pool body 204 is 2.0-2.5m away from the bottom of the first pool body (201), and the top is 2.0-2.5m away from the first pool body (201). The top of the pool body 201 is flush. Of course, the structure of the device is not limited to the above data, and their shapes can also be other shapes, for example, a rectangular cylindrical structure is also possible, here we just give examples of our conventionally designed structures and parameters.

The above-mentioned embodiments are only preferred embodiments for fully illustrating the utility model, and the scope of protection thereof is not limited thereto. The equivalent substitutions or transformations made by those skilled in the art on the basis of the utility model are all within the protection scope of the utility model, and the protection scope of the utility model shall be determined by the claims.

Claims (9)

1. a kind of countryside sewage treatment equipment, it is characterised in that including preliminary sedimentation tank (101), reaction tank and collecting-tank (3)；

The reaction tank includes the first pond body (201), the second pond body (202), guide shell (203) and the 3rd pond body (204), described First pond body (201) open topped, and top side wall annular is provided with draining gap, second pond body (202) are located at described the In one pond body (201), second pond body (202) is highly less than the first pond body (201), and the second pond body (202) top opens Mouthful, and bottom filling anaerobic sludge, top side wall is smooth dentalation, and the guide shell (203) tips upside down on described second In pond body (202), and apart from the first pond body (201) 40~50cm of bottom of pond, the tooth of the second pond body (202) top side wall Shape structure is in contact with the guide shell (203) inside bottom, and the 3rd pond body (204) annular is located at first pond body (201) peripheral, concordant with first pond body (201) at the top of the 3rd pond body (204), bottom is higher than first pond body (201) bottom；Ring-type fixing plate (205) is provided between first pond body (201) inwall and the guide shell (203) outer wall, Biologic packing material is filled with above the ring-type fixing plate (205), lower section is provided with aerator；

Preliminary sedimentation tank (101) side wall is top to be connected with water inlet pipe, and the water inlet pipe is successively horizontal through the first pond body (201) side Wall, guide shell (203) sidepiece and the second pond body (202) side wall, interior into second pond body (202), the water inlet pipe is with hanging down Straight downward water distributor (102) connection, water distributor (102) lower surface apart from the second pond body (202) bottom 50~ 100cm；

Connected above collecting-tank (3) side wall by drainpipe with the 3rd pond body (204).

2. countryside sewage treatment equipment according to claim 1, it is characterised in that first pond body (201), the second pond Body (202) and the 3rd pond body (204) are concrete sump, and the guide shell (203) is carbon steel material, and surface is coated with anticorrosion Layer.

3. countryside sewage treatment equipment according to claim 1 or 2, it is characterised in that also set in the preliminary sedimentation tank (101) There is filter, the filter is removably fixed in the water inlet of water inlet pipe.

4. countryside sewage treatment equipment according to claim 1 or 2, it is characterised in that set on the 3rd pond body (204) There is cover plate, downtake pipe (210) is provided with the middle part of the cover plate, rainhat is provided with the top of the downtake pipe (210)；

Guide shell (203) top is provided with second exhaust pipe (209), and the second exhaust pipe (209) is arranged in described In one blast pipe (210).

5. countryside sewage treatment equipment according to claim 1 or 2, it is characterised in that the aerator includes annular Aeration tube (207), blower fan (208) of the annular aeration tube (207) with the 3rd pond body (204) outside are connected.

6. countryside sewage treatment equipment according to claim 1 or 2, it is characterised in that the draining gap has city wall The shape of crenel.

7. countryside sewage treatment equipment according to claim 1 or 2, it is characterised in that the first pond body (201), the second pond Body (202), guide shell (203) and the 3rd pond body (204) are tubular, and confronting coaxial is set, and the internal diameter of the first pond body (201) is 3~4m, the internal diameter of second pond body (202) is 1~1.5m, and the internal diameter of the 3rd pond body (204) is 4~5m, described to lead The internal diameter of flow cartridge (203) is 2~2.5m；

First pond body (201) is highly 3.5m, and the height of second pond body (202) is 3m.

8. countryside sewage treatment equipment according to claim 7, it is characterised in that the 3rd pond body (204) bottom away from From the first pond body (201) 2.0~2.5m of bottom, top at the top of first pond body (201) with flushing.

9. countryside sewage treatment equipment according to claim 1 or 2, it is characterised in that the water distributor (102) has loudspeaker Shape structure.