CN212864489U

CN212864489U - Rural domestic sewage treatment device

Info

Publication number: CN212864489U
Application number: CN202021658621.6U
Authority: CN
Inventors: 张军; 聂永山; 柳聪; 张茂刚; 华佳
Original assignee: Wuxi City College of Vocational Technology
Current assignee: Wuxi City College of Vocational Technology
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-04-02
Anticipated expiration: 2030-08-11

Abstract

The utility model belongs to the technical field of sewage treatment and discloses a rural domestic sewage treatment device which comprises an upper tank body and a lower tank body, wherein the lower tank body comprises a septic unit, a sewage treatment unit and an adjusting unit which are arranged around the septic unit; the sewage treatment unit comprises a first anoxic unit, a first aerobic unit, a second anoxic unit, a second aerobic unit and a precipitation unit which are sequentially communicated, and the top of the precipitation unit is provided with a water collecting tank connected with a water outlet pipe; the septic unit is provided with a water inlet pipe, an air lift pump and an air lift pump water outlet pipe are arranged in the septic unit, the air lift pump is provided with an air jet pipe and is connected with the aeration ring pipes in the two aerobic units through an aeration pipeline, and the sedimentation unit and the two aerobic units are communicated with the two anoxic units through a sludge return pipeline by utilizing the air lift pump. The utility model discloses compact structure is reasonable, the treatment effect is good, inhales mud work low and energy-conserving, and the discharge water after the processing can be used to irrigate, has both solved rural domestic sewage dispersion, unfavorable difficult problem of handling, but changing waste into valuables.

Description

Rural domestic sewage treatment device

Technical Field

The utility model belongs to the technical field of sewage treatment, concretely relates to rural domestic sewage treatment plant.

Background

With the progress of society, rural living conditions are better and better, the types of sewage pollutants generated in the living process are increased, the concentration is improved, the seating and landing conditions of various villages are different, some rural areas are far away from a sewage treatment plant, the collection and treatment of the sewage in the rural areas in the places have certain difficulty, and the cost is higher. Some peasant households have set up the septic tank and have carried out preliminary treatment to domestic sewage, and the effect is limited, and clearly draw work relatively frequently, and other rural areas have set up sewage treatment facility, and these facilities all set up with the septic tank separately, and area is big usually, and this has received the restriction in the popularization process of rural domestic sewage on-the-spot treatment: the earthwork excavation amount is large, the manufacturing cost is high, and the sewage lifting operation cost is also high. Some rural sewage treatment facilities are shelved due to the problems of cost and expenditure, and even some facilities can not be in contact with the body after running for a period of time. The domestic sewage of individual rural residences is even directly discharged into the water body without being treated, thereby causing the pollution of the surrounding water environment. China is a big agricultural country, the population base of rural areas is large, and the problem of rural domestic sewage treatment is still outstanding.

Disclosure of Invention

The utility model aims to solve the problems and provides a rural domestic sewage treatment device which has small occupied area, low cost and good treatment effect.

According to the technical scheme of the utility model, the rural domestic sewage treatment device comprises an upper tank body and a lower tank body, wherein the lower tank body comprises a septic unit arranged in the middle, and a sewage treatment unit and an adjusting unit which are arranged around the septic unit; the sewage treatment unit comprises a first anoxic unit, a first aerobic unit, a second anoxic unit, a second aerobic unit and a precipitation unit which are sequentially communicated, the first anoxic unit is communicated with the septic unit through a regulating unit, a first aeration ring pipe is arranged in the first aerobic unit, a second aeration ring pipe is arranged in the second aerobic unit, a water collecting tank is arranged at the top of the precipitation unit, and the water collecting tank is connected with a water outlet pipe;

the septic unit is connected with the adjusting unit through an air lift pump water outlet pipe, a water inlet pipe is arranged above the septic unit, an air lift pump is arranged in the septic unit, an air jet pipe connected with the air lift pump water outlet pipe is arranged on the air lift pump, the air lift pump is connected with a first aeration ring pipe and a second aeration ring pipe through aeration pipelines, and the sedimentation unit, the first aerobic unit and the second aerobic unit are communicated with the first anoxic unit and the second anoxic unit through mud return pipelines by utilizing the air lift pump.

Furthermore, the upper tank body is provided with a well cover.

Furthermore, the lower tank body is oval.

Further, the gas injection pipe is fixed inside the water outlet pipe of the air-lift pump.

Furthermore, the first aeration circular pipe and the second aeration circular pipe are provided with holes at a certain interval.

Furthermore, a first adjusting valve is arranged on an aeration pipeline between the airlift pump and the first and second aeration circular pipes.

Furthermore, a second regulating valve is arranged on a sludge return pipeline between the sedimentation unit, the first aerobic unit, the second aerobic unit, the first anoxic unit, the second anoxic unit and the air lift pump.

Furthermore, a hanging basket and a packing barrel are arranged in the precipitation unit, and phosphorus removal packing is arranged in the hanging basket and the packing barrel.

Further, the upper edge of the filling barrel is lower than the upper edge of the water collecting tank.

Further, the phosphorus removal filler is waste brick particles and lime particles.

The beneficial effects of the utility model reside in that: the device has the advantages of compact and reasonable structure, good treatment effect, low mud absorption work and energy conservation, and the treated discharge water can be used for irrigation, thereby not only solving the problems of rural domestic sewage dispersion and unfavorable treatment, but also changing waste into valuables; the septic unit and the sewage treatment unit are arranged together, so that the sludge amount in the septic tank is greatly reduced, the sludge is sucked for about 3-4 times in the past, and the sludge is sucked for 1 time every year; the whole device is oval, and sewage is in circulation in the treatment process, so that the floor area of the whole facility is greatly reduced, and the hydraulic retention time is prolonged, thereby improving the treatment effect of rural domestic sewage; the hanging basket and the filling barrel arranged at the tail end of the effluent perform phosphorus removal by placing waste brick grains and lime grains, so that the phosphorus removal effect of the whole device is ensured; in addition, the whole device can perform sewage lifting, sludge backflow, aeration, pollution discharge overhaul and sludge self-suction functions through the air lift pump, the oxygen supply of the air lift pump can replace a water pump lifting function, the service life is long, the power consumption of one-day treatment cannot reach 1 KW.h when the independent farmer sewage water quantity is about 2.5m for carrying out the year/d-3.5 m for carrying out the year/d, and the maintenance is facilitated and the operation cost of the power consumption device is greatly reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the water pumping of the air lift pump of the present invention.

Fig. 3 is a schematic structural diagram of the precipitation unit of the present invention.

FIG. 4 is a schematic view of the oxygen supply connection of the aerobic unit of the present invention.

Figure 5 is a schematic view of the anaerobic unit sludge recirculation connection of the present invention.

Description of reference numerals: 1-a water inlet pipe, 2-a septic unit, 3-an airlift pump, 4-a regulating unit, 5-a first anoxic unit, 5 a-a second anoxic unit, 6-a first aerobic unit, 6 a-a second aerobic unit, 7-a settling unit, 8-a hanging basket, 9-a filling barrel, 10-a water collecting tank, 10 a-a water outlet pipe, 10 b-an airlift pump water outlet pipe, 11-a lower tank body, 12-an upper tank body, 13-a first aeration ring pipe, 13 a-a second aeration ring pipe, 13 b-an air injection pipe, 14-a water inlet, 15-an aeration pipeline, 16-a first regulating valve, 16 a-a second regulating valve and 17-a mud return pipeline.

Detailed Description

The invention will be further described with reference to the following specific embodiments and the accompanying drawings.

As shown in the figure: rural domestic sewage treatment plant, including upper portion body of pool 12 and lower part body of pool 11, wherein, lower part body of pool 11 is including setting up the septic unit 2 in the middle part and the sewage treatment unit and the regulating unit 4 that encircle septic unit 2 and set up. The sewage treatment unit comprises a first anoxic unit 5, a first aerobic unit 6, a second anoxic unit 5a, a second aerobic unit 6a and a precipitation unit 7 which are sequentially communicated, the first anoxic unit 5 is communicated with the septic unit 2 through a regulating unit 4, a first aeration ring pipe 13 is arranged in the first aerobic unit 6, a second aeration ring pipe 13a is arranged in the second aerobic unit 6a, a water collecting tank 10 is arranged at the top of the precipitation unit 7, and the water collecting tank 10 is connected with a water outlet pipe 10 a. The sewage is in circulation in the treatment process, the floor area of the whole facility is greatly reduced, the hydraulic retention time is prolonged, thereby improving the treatment effect of rural domestic sewage,

the septic unit 2 is connected with the adjusting unit 4 through an air-lift pump water outlet pipe 10b, a water inlet pipe 1 is arranged above the septic unit 2, an air-lift pump 3 is arranged in the septic unit 2, in one embodiment, the air-lift pump 3 is arranged on the right side of the septic unit 2, and an air injection pipe 13b connected with the air-lift pump water outlet pipe 10b is arranged on the air-lift pump 3. As shown in fig. 2, after the air-lift pump 3 injects air through the air injection pipe 13b, the sewage in the septic tank is sent to the adjusting unit 4 through the air-lift pump water outlet pipe 10 b; when the septic unit 2 is in trouble shooting, the air lift pump water outlet pipe 10b can be connected with the collecting device, and the air lift pump 3 is started to evacuate the septic unit 2 to implement maintenance work. When the sludge suction work starts, the air lift pump water outlet pipe 10b is connected with the collecting device, tap water is put into the collecting device for dilution and stirring, the air lift pump 3 is started to evacuate sludge in the septic unit 2, and the problem that no special sludge suction truck exists in rural areas or the sludge suction truck cannot enter the field can be solved. The air-lift pump 3 is connected to the first 13 and second 13a aeration loops by means of an aeration pipe 15, and air is delivered by the air-lift pump 3 to the first 13 and second 13a aeration loops by means of the aeration pipe 15. The sedimentation unit 7, the first aerobic unit 6 and the second aerobic unit 6a are communicated with the first anoxic unit 5 and the second anoxic unit 5a through a sludge return pipeline 17 by using the air-lift pump 3, so that the sludge of the aerobic unit and the sedimentation unit can be returned to the anoxic unit to supplement the sludge concentration. Whole device plays sewage promotion, backward flow mud, aeration, blowdown and overhauls, from five powerful functions of mud of inhaling through the airlift pump, avoids using the water pump, and single family sewage water yield is during 2.5m year/d-3.5 m year/d, handles power consumption and is less than 1 degree electricity, and the working costs is low, airlift pump long service life, simple structure, maintenance convenience, the mode that specially adapted rural distributed sewage treatment does not have professional supervision operation.

Specifically, the upper tank body 12 is provided with a well cover, and cleaning, mud sucking and maintenance work can be performed after the well cover is opened. The lower tank body 11 is oval. The first 13 and second 13a aeration loops are perforated at a distance to provide oxygen to the two aerobic units. The gas lance 13b can be inserted from the bottom side wall of the gas lift pump outlet pipe 10b on the septic unit 2 side and fixed inside the gas lift pump outlet pipe 10b by means of a clip.

A first adjusting valve 16 is arranged on an aeration pipeline 15 between the airlift pump 3 and the first aeration loop 13 and the second aeration loop 13a and is used for adjusting aeration quantity. A second adjusting valve 16a is arranged on a sludge return pipeline 17 between the sedimentation unit 7, the first aerobic unit 6, the second aerobic unit 6a, the first anoxic unit 5, the second anoxic unit 5a and the air lift pump 3 and used for adjusting the sludge return amount.

A hanging basket 8 and a packing barrel 9 are arranged in the precipitation unit 7, a dephosphorization filler is arranged in the hanging basket 8 and the packing barrel 9, the dephosphorization effect of the whole device is ensured, and a water inlet is formed in the bottom of the hanging basket 8. The upper edge of the filler barrel 9 is lower than the upper edge of the water collection sump 10 to prevent sludge loss. The phosphorus removal filler can adopt waste brick grains and lime stone grains.

The working process is as follows: rural domestic sewage flows out of a household pipe and then is connected into a water inlet pipe 1, flows into the water inlet pipe 1 and then enters a septic unit 2, and the septic unit mainly plays a role in precipitating large-particle substances in the sewage and primarily degrading organic matters; after the sedimentation and anaerobic treatment of the septic unit, the sewage of the septic tank is lifted by the air lift pump 3 through the air jet pipe 13b and enters the adjusting unit 4 through the air lift pump outlet pipe 10b, and the adjusting unit 4 mainly plays a role in adjusting, so that the device can buffer the treatment load of the domestic sewage, prevent the rapid change of the treatment system load and reduce the fluctuation of the flow of the sewage entering the treatment system; then the sewage enters a first anoxic unit 5 for treatment, and the first anoxic unit 5 mainly performs organic matter degradation and denitrification treatment on the sewage; then the sewage enters a first aerobic unit 6, and the first aerobic unit 6 mainly degrades organic matters and carries out nitration reaction to generate nitrate and nitrite; then the sewage enters a second anoxic unit 5a, and the second anoxic unit 5a and the first anoxic unit 5 play the same role; the sewage enters a second aerobic unit 6a, the second aerobic unit 6a has the same function as the first aerobic unit 6, and is conveyed to the first aerobic unit 6 and the second aerobic unit 6a by an air lift pump 3 through an aeration pipeline 15, oxygen is supplied to the first aerobic unit 6 and the second aerobic unit 6a through a first aeration ring pipe 13 and a second aeration ring pipe 13a, and the oxygen supply amount is regulated through a first regulating valve 16; the first aerobic unit 6 and the second aerobic unit 6a respectively return sludge to the first anoxic unit 5 and the second anoxic unit 5a through the sludge return pipeline 17 by the air lift pump 3, the sludge return flows on one hand to carry out denitrification and denitrification on nitrate and nitrite and on the other hand to supplement the sludge concentration so as to ensure the microbial biomass required by sewage degradation, and the sludge return flow is adjusted by the second adjusting valve 16 a; sewage then enters from the bottom of the precipitation unit 7 through the water inlet 14, a hanging basket 8 and a filling barrel 9 are arranged in the precipitation unit 7, waste brick grains and lime grains can be placed in the hanging basket 8 and the filling barrel 9 for phosphorus removal, fillers in the hanging basket 8 and the filling barrel 9 can be replaced regularly, and treated water enters the water collecting tank 10 through overflow and is finally discharged through the water outlet pipe 10 a. The device has compact and reasonable structure, saves energy and can realize the reuse of treated water.

Claims

1. A rural domestic sewage treatment device is characterized by comprising an upper tank body (12) and a lower tank body (11), wherein the lower tank body (11) comprises a septic unit (2) arranged in the middle, and a sewage treatment unit and an adjusting unit (4) which are arranged around the septic unit (2); the sewage treatment unit comprises a first anoxic unit (5), a first aerobic unit (6), a second anoxic unit (5 a), a second aerobic unit (6 a) and a precipitation unit (7) which are sequentially communicated, the first anoxic unit (5) is communicated with the septic unit (2) through a regulating unit (4), a first aeration ring pipe (13) is arranged in the first aerobic unit (6), a second aeration ring pipe (13 a) is arranged in the second aerobic unit (6 a), a water collecting tank (10) is arranged at the top of the precipitation unit (7), and the water collecting tank (10) is connected with a water outlet pipe (10 a);

the septic unit (2) is connected with the adjusting unit (4) through an air-lift pump water outlet pipe (10 b), a water inlet pipe (1) is arranged above the septic unit (2), the air-lift pump (3) is arranged in the septic unit (2), an air jet pipe (13 b) connected with the air-lift pump water outlet pipe (10 b) is arranged on the air-lift pump (3), the air-lift pump (3) is connected with a first aeration ring pipe (13) and a second aeration ring pipe (13 a) through an aeration pipeline (15), and the sedimentation unit (7), the first aerobic unit (6) and the second aerobic unit (6 a) are communicated with the first anoxic unit (5) and the second anoxic unit (5 a) through a sludge return pipeline (17) by utilizing the air-lift pump (3).

2. The rural domestic sewage treatment apparatus according to claim 1, wherein said upper tank body (12) is provided with a manhole cover.

3. The rural domestic sewage treatment apparatus according to claim 1, wherein said lower tank body (11) is oval.

4. The rural domestic sewage treatment apparatus according to claim 1, wherein the gas injection pipe (13 b) is fixed inside the air lift pump outlet pipe (10 b).

5. The rural domestic sewage treatment apparatus according to claim 1, wherein the first aeration loop (13) and the second aeration loop (13 a) are perforated with holes at a certain interval.

6. The rural domestic sewage treatment apparatus according to claim 1, wherein a first adjusting valve (16) is provided on the aeration pipe (15) between the air-lift pump (3) and the first aeration loop (13) and the second aeration loop (13 a).

7. The rural domestic sewage treatment plant according to claim 1, wherein a second regulating valve (16 a) is arranged on a sludge return pipe (17) between the sedimentation unit (7), the first aerobic unit (6), the second aerobic unit (6 a), the first anoxic unit (5), the second anoxic unit (5 a) and the airlift pump (3).

8. The rural domestic sewage treatment device according to claim 1, wherein a hanging basket (8) and a packing barrel (9) are arranged in the precipitation unit (7), and phosphorus removal packing is arranged in the hanging basket (8) and the packing barrel (9).

9. The rural domestic sewage treatment apparatus according to claim 8, wherein the upper edge of the stuffing barrel (9) is lower than the upper edge of the water collection tank (10).

10. The rural domestic sewage treatment device of claim 8, wherein the phosphorus removal filler is waste brick particles and lime stone particles.