CN203768183U - Novel rural domestic sewage treatment system - Google Patents

Abstract

The utility model discloses a new type of rural domestic sewage treatment system, which comprises sequentially connected sewage collection pools, anaerobic treatment pools, sludge sedimentation pools, purification pools and wetlands. The rain and sewage diversion device is connected; the rain and sewage diversion device includes a channel and a partition support, and the partition support separates the channel into a rainwater open ditch and a sewage dark ditch, realizing the rain and sewage diversion and reducing the total amount of domestic sewage; The sewage collection tank is filtered by a three-way pipe, which prevents clogging, is easy to clean, and improves the efficiency of domestic sewage treatment.

Description

A New Rural Domestic Sewage Treatment System

technical field

The utility model relates to domestic sewage treatment equipment, in particular to a novel rural domestic sewage treatment system.

Background technique

Over the years, the development of remote rural areas has been relatively lagging behind, and the improvement of rural environmental sanitation is restricted by many factors such as geographical conditions, economic factors, and ideological concepts. Domestic sewage treatment methods are relatively backward. Especially for most scattered rural households, if the sewage treatment system is built according to the model of centralized living, not only will the investment be large, but the benefit will be poor. Nowadays, most scattered farmers generally introduce domestic sewage and human and animal manure into semi-open sewage tanks for simple anaerobic treatment, and then use natural terrain and open sewage channels to flow into low-lying areas. This treatment and discharge method often leads to the overflow of sewage and the overflow of odor, which not only pollutes the environment, but also easily breeds germs. In case of heavy rain, the rainwater will also enter the open sewage storage tanks and open sewage channels, which will increase the amount of sewage discharge, and the impact will be even more serious. Therefore, rural domestic sewage must be included in the unified treatment. The treatment equipment generally includes sewage collection tanks, anaerobic treatment tanks, sludge sedimentation tanks, purification tanks and wetlands, and the domestic sewage of each user is concentrated in the sewage collection tank for filtration. , and then the filtered sewage is passed into the anaerobic digestion tank for decomposition, and the decomposed sewage enters the sedimentation tank for precipitation, and the settled sewage is further subjected to ecological purification treatment, so that the cleaned sewage meets the sewage discharge standard. The existing sewage collection pool is filtered by grid mesh, which is easy to be blocked and difficult to clean.

The Chinese patent number is: CN201120418788.X, a utility model of a rain and sewage diversion device. The rain and sewage diversion device includes: a rain and sewage confluence pipe, an interception well, a sewage interception pipe, and a rainwater discharge pipe. Two parallel fixed shafts are arranged in the interception well , one of the fixed shafts is set parallel to the central axis of the sewage intercepting pipe and is located directly above the sewage intercepting pipe; the gate is located in the intercepting frame, and the gate and the buoy are respectively connected through the two fixed shafts; a light flap gate is installed at the outlet of the rainwater discharge pipe , which mainly uses the buoyancy of the buoy to set the gate in the interception well to connect with the buoy to control the diversion of sewage and rainwater. It is not applicable, and it is not simple and convenient.

Another Chinese patent number is: CN201320021857.2 discloses a sewage collection tank and a sewage treatment system including the sewage collection tank. The sewage collection tank involved in the utility model is characterized in that it includes: a sealed body made of impermeable material; a feed pipe that is sealed with one end of the body and communicated with the body; and sealed with the other end of the body And the liquid outlet pipe that is connected with the body; at least one bulkhead that divides the body into multiple cavities, and the cavity between the bulkhead adjacent to one end and one end is recorded as the feeding chamber; At least one intermediate pipe that passes through the bulkhead and is sealed with the bulkhead; the cleaning port that is arranged above the feed chamber; and at least one inspection port that is arranged above the cavity, wherein, One end of the feed pipe protrudes from the body, the other end is in the feed chamber and extends toward the bottom of the body, the end of the middle pipe near the feed pipe extends toward the bottom of the body, and the end near the liquid outlet pipe toward the other end. In this patent, there is at least one intermediate pipe on each bulkhead and passing through the bulkhead to be sealingly combined with the bulkhead, but the intermediate pipe cannot function as a filter.

How to obtain the best treatment effect with the least investment is the key consideration in the treatment of rural domestic sewage. The utility model designs a simple and feasible treatment system for domestic sewage in rural areas in combination with the natural terrain conditions in mountainous and hilly areas and the lifestyles of scattered farmers, which not only meets the goals of new rural construction, but also meets the actual needs of farmers .

Utility model content

In order to overcome the defects of the above-mentioned prior art, the utility model provides a new type of rural domestic sewage treatment system, the treatment system will not be blocked during the sewage filtration process, and at the same time, the sewage after anaerobic treatment can be diverted through rain and sewage The device enters the sewage sedimentation tank, which blocks the confluence of rain and sewage, greatly reduces the total amount of sewage, is conducive to regular ditch cleaning, and is convenient for cleaning, improving the efficiency of domestic sewage treatment.

In order to solve the problems of the technologies described above, the technical solution adopted by the utility model is:

A new type of rural domestic sewage treatment system, comprising sequentially connected sewage collection tanks, anaerobic treatment tanks, sludge sedimentation tanks, purification tanks and wetlands, characterized in that: the anaerobic treatment tank and the sludge sedimentation tank are separated by rain The sewage diversion device is connected; the rain and sewage diversion device includes a channel and a partition support, and the channel is composed of a left ditch wall, a right ditch wall and a ditch bottom; one end of the partition support is fixed to the upper part of the right ditch wall, The other end is fixed to the middle part of the bottom of the ditch; the partition support separates the channel into a rainwater open ditch and a sewage dark ditch; the sewage dark ditch is surrounded by the right ditch wall, the partition support and the ditch bottom; the rainwater open ditch is formed by the left ditch wall, partition support and ditch bottom;

The sewage collection tank includes a pool body, the pool body is provided with a sewage inlet and a sewage outlet; the sewage outlet is provided with a three-way pipe, and the three-way pipe includes an upper port, a lower port and a middle port; The three-way pipe is connected to the sewage outlet through the middle end, the upper end of the three-way pipe is higher than the height of the sewage inlet, and the lower end of the three-way pipe is installed between the bottom of the pool body. gap; the sewage collection pool communicates with the bottom of the anaerobic treatment pool through the sewage outlet.

The middle and upper part of the right ditch wall is provided with a groove, and the middle part of the ditch bottom is provided with a groove, and the two ends of the partition support are respectively fixed in the two grooves.

The groove at the bottom of the ditch is provided with stuffing for fastening the partition support, and the stuffing is higher than the bottom surface of the bottom of the ditch.

The filler is earth, stone or wood.

The partition support is an elastic bamboo support.

The middle end of the three-way pipe is inserted into the sewage outlet and connected with the sewage outlet.

The gap between the lower end of the tee pipe and the bottom of the pool body is 10cm-40cm.

The gap between the lower end of the tee pipe and the bottom of the pool body is 20cm-30cm.

The utility model has the following advantages:

1. In the utility model, the anaerobic treatment tank and the sludge sedimentation tank are connected through the rain and sewage diversion device, wherein the rain and sewage device includes a channel and a partition support, one end of the partition support is fixed to the upper part of the right ditch wall, and the other end Fixed with the middle part of the bottom of the ditch, the partition support separates the channel into a rainwater open ditch and a sewage undercover ditch; the right ditch wall, partition support and ditch bottom form a sewage undercover ditch, and the left ditch wall, partition support and A rainwater open ditch is formed at the bottom of the ditch. When it rains, most of the rainwater passes quickly through the rainwater open ditch area a. The rural domestic sewage treatment device can prevent a large amount of rainwater from gathering with less raw sewage when it rains, and realize the diversion of rainwater and sewage. The total amount of domestic sewage is greatly reduced, and the partition support is easy to remove from the right ditch wall, so the ditch can be cleaned regularly and the cleaning is convenient.

The effect of the three-way pipe set in the sewage collection tank is equivalent to the grid net used for filtering in the original sewage collection tank, and the three-way pipe includes an upper end, a lower end and a middle end; the three-way The pipe is connected with the sewage outlet through the middle end, and the upper end of the three-way pipe is higher than the height of the sewage inlet, so as to prevent floating objects from entering the three-way pipe from the upper end, blocking the three-way pipe and affecting the sewage treatment of the lower level; There is a gap between the lower end of the three-way pipe and the bottom of the pool body, and the sewage entering the sewage collection tank from the sewage inlet enters from the lower end of the three-way pipe and is connected through the middle end. The sewage outlet is discharged into the lower-level treatment, so the sewage entering the pool from the sewage inlet will not enter the sewage outlet through the lower port, let alone block the sewage outlet, and the floating matter will float in the sewage collection tank. Salvage through nets; or deposit in the pool to form sludge, and then remove it; connect the sewage outlet to the bottom of the anaerobic treatment pool, and the sewage will flow from bottom to top in the anaerobic treatment pool, which is conducive to the anaerobic treatment of sewage Anaerobic treatment is carried out in the pool, so this kind of sewage collection pool filters the floating debris in the sewage collection pool through the three-way pipe, and there will be no clogging during the filtration process, eliminating the need for cleaning the filtering grid net, and improving the overall life. The efficiency of sewage treatment plants in treating sewage.

2. The middle and upper part of the right ditch wall of the utility model is provided with a groove, and the middle part of the ditch bottom is provided with a groove. The two ends of the partition support are respectively fixed in the two grooves. , to facilitate construction and transformation, the groove at the bottom of the ditch is provided with fillers for fastening the partition supports, and the fillers are higher than the bottom surface of the ditch bottom to prevent rainwater from intruding into the sewage underground ditch when it rains; at the same time, the fillers are soil , stone or wood, local materials, very simple.

3. The middle partition support of the utility model is an elastic bamboo weaving support, which is easy to take and has no secondary pollution. After the bamboo weaving support is aged, the local people can burn it as firewood.

4. In the utility model, the middle end of the three-way pipe is inserted into the sewage outlet and connected with the sewage outlet. During this process, the middle end of the three-way pipe forms a sewage outlet, which simplifies the sewage collection pool.

5. The gap between the lower end of the three-way pipe of the utility model and the bottom of the pool body is 10cm-40cm, which not only prevents the sludge in the sewage collection tank from entering the three-way pipe, but also effectively allows sewage to enter the three-way pipe from the lower end. The through pipe enters the lower sewage treatment. The best gap is 20cm-30cm.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of the sewage collection tank of the present utility model;

Fig. 3 is a schematic cross-sectional structure diagram of the rain and sewage diversion device in Embodiment 1 of the present utility model;

Fig. 4 is the cross-sectional structure schematic diagram of the rain and sewage diversion device of embodiment 2 of the present utility model;

Fig. 5 is a schematic cross-sectional structure diagram of the rain and sewage diversion device of embodiment 3 of the present utility model;

Marks in the figure: 1 is the sewage collection tank, 2 is the anaerobic treatment tank, 3 is the sludge sedimentation tank, 4 is the purification tank, 5 is the wetland, 6 is the rain and sewage diversion device, 11 is the pool body, and 12 is the sewage inlet , 13 is a three-way pipe, 13A is an upper port, 13B is a lower port, 13C is a middle port, 14 is sludge, 15 is sewage, 61 is a ditch, 62 is a left ditch wall, and 63 is a right ditch wall, 64 is the bottom of the ditch, 65 is a partition support, 66 and 67 are grooves, 68 is a filling, a is a rainwater open ditch, and b is a sewage undercover.

Detailed ways

Example 1

As shown in Figure 1, Figure 2, and Figure 3, a new type of rural domestic sewage treatment system includes a sewage collection pool 1, an anaerobic treatment pool 2, a sludge sedimentation pool 3, a purification pool 4, and a wetland 5 connected in sequence. The anaerobic treatment tank 2 and the sludge settling tank 3 are communicated by a rain and sewage diversion device 6; the rain and sewage diversion device 6 includes a channel 61 and a partition support 65, and the channel 61 consists of a left ditch wall 62, The right ditch wall 63 and the ditch bottom 64 are formed, and one end of the partition support 65 is fixed to the upper part of the right ditch wall 63, and the other end is fixed to the middle and upper part of the ditch bottom 64, that is, the above-mentioned partition support 65 separates the channel 61 into rainwater Open ditch a (district) and sewer ditch b (district); the above-mentioned sewer ditch b is a channel surrounded by the right ditch wall 63, the partition support 65 and the ditch bottom 64, and the rainwater open ditch a is formed by the left ditch wall 62, the partition support 65 and the passage surrounded by ditch bottom 64. When it rains, most of the rainwater quickly passes through the rainwater ditch a area, preventing a large amount of rainwater from converging with the raw sewage in the sewage ditch b, realizing the diversion of rain and sewage, greatly reducing the total amount of domestic sewage, and the partition support 65 is easy to Remove from the right ditch wall 63, so it can be cleaned regularly, and it is convenient for decontamination.

Further, the upper part (or middle upper part) of the right ditch wall 63 is provided with a groove 66, and the middle part of the ditch bottom 64 is provided with a groove 67, and the two ends of the partition support 65 are respectively fixed in the two grooves 66, 67 in.

Preferably, the groove 67 of the ditch bottom 64 is provided with a filler 68 for fastening the partition support, the filler 68 is higher than the bottom surface of the ditch bottom 64, and the filler 68 is earth, stone or Wood block, when preventing rain, rainwater invades in the sewage dark ditch b; Simultaneously filling material 68 is earth, stone block or block, and it is very simple to take materials locally.

Further preferably, the partition support 65 is an elastic bamboo braided support, and the partition support is made into an arc shape, and the section of the sewage underdrain is fan-shaped. The elastic bamboo support is easy to take, no secondary pollution, and the local people can burn it as firewood after the bamboo support is aged.

Sewage collection tank 1 has been redesigned simultaneously, sewage collection tank 1 comprises pool body 11, is provided with sewage inlet 12 and sewage outlet on pool body 11, is provided with three-way pipe 13 at sewage outlet place, and described three-way pipe 13 has three openings, which are respectively the upper port 13A, the lower port 13B and the middle port 13C; the three-way pipe 13 is arranged on the pool body 11 on the side of the sewage outlet, and the three-way pipe 13 passes through the middle mouth end 13C and the sewage outlet. Cooperate with the connection, put the middle end 13C of the three-way pipe 13 into the sewage outlet, and cooperate with the sewage outlet, (that is, the middle end 13C essentially forms the sewage outlet), the upper end 13A of the three-way pipe 13 is high At the height of the sewage inlet 12, to prevent floating objects from entering the tee pipe from the upper port 13A, there is a gap between the lower port 13B of the tee pipe 13 and the bottom of the pool body 11; The mouth is connected with the bottom of the anaerobic treatment tank 2, and the sewage 15 enters the anaerobic treatment tank 2 and turns from bottom to top, which is conducive to the anaerobic treatment of the sewage in the anaerobic treatment tank 2; the lower mouth end of the three-way pipe The gap with the bottom of the pool body is 10cm-40cm. Its working principle is: the sewage 15 entering the sewage collection tank from the sewage inlet 12 enters from the lower port 13B of the three-way pipe and is discharged into the anaerobic treatment pool 2 through the sewage outlet connected with the middle port 13C. Therefore, the sewage 15 that enters the pool body from the sewage inlet 12 will not enter the sewage outlet through the lower port 3B, and will not block the sewage outlet, and the floating substances will float in the sewage collection tank 1. Salvage through a net bag; or deposit in the pool to form sludge 4, and then remove it; therefore, this kind of sewage pool filters the floating debris in the sewage pool through a three-way pipe, and there will be no clogging during the filtering process, eliminating the need for cleaning The process of filtering the grid net improves the efficiency of domestic sewage treatment.

Example 2

As shown in Figure 1, Figure 2, and Figure 4, a new type of rural domestic sewage treatment system includes a sewage collection pool 1, an anaerobic treatment pool 2, a sludge sedimentation pool 3, a purification pool 4, and a wetland 5 connected in sequence. The anaerobic treatment tank 2 and the sludge settling tank 3 are communicated by a rain and sewage diversion device 6; the rain and sewage diversion device 6 includes a channel 61 and a partition support 65, and the channel 61 consists of a left ditch wall 62, The right ditch wall 63 and the ditch bottom 64 are formed, and one end of the partition support 65 is fixed to the upper part of the right ditch wall 63, and the other end is fixed to the middle and upper part of the ditch bottom 64, that is, the above-mentioned partition support 65 separates the channel 61 into rainwater Open ditch a (district) and sewer ditch b (district); the above-mentioned sewer ditch b is a channel surrounded by the right ditch wall 63, the partition support 65 and the ditch bottom 64, and the rainwater open ditch a is formed by the left ditch wall 62, the partition support 65 and the passage surrounded by ditch bottom 64. When it rains, most of the rainwater quickly passes through the rainwater ditch a area, preventing a large amount of rainwater from converging with the raw sewage in the sewage ditch b, realizing the diversion of rain and sewage, greatly reducing the total amount of domestic sewage, and the partition support 65 is easy to Remove from the right ditch wall 63, so it can be cleaned regularly, and it is convenient for decontamination.

Further, the upper part (or middle upper part) of the right ditch wall 63 is provided with a groove 66, and the middle part of the ditch bottom 64 is provided with a groove 67, and the two ends of the partition support 65 are respectively fixed in the two grooves 66, 67 in.

Preferably, the groove 67 of the ditch bottom 64 is provided with a filler 68 for fastening the partition support, the filler 68 is higher than the bottom surface of the ditch bottom 64, and the filler 68 is earth, stone or Wood block, when preventing rain, rainwater invades in the sewage dark ditch b; Simultaneously filling material 68 is earth, stone block or block, and it is very simple to take materials locally.

Further preferably, the partition support 65 is an elastic bamboo braided support, the partition support is straight, and the cross section of the sewage culvert is triangular. The elastic bamboo support is easy to take, no secondary pollution, and the local people can burn it as firewood after the bamboo support is aged.

Sewage collection tank 1 has been redesigned simultaneously, sewage collection tank 1 comprises pool body 11, is provided with sewage inlet 12 and sewage outlet on pool body 11, is provided with three-way pipe 13 at sewage outlet place, and described three-way pipe 13 has three openings, which are respectively the upper port 13A, the lower port 13B and the middle port 13C; the three-way pipe 13 is arranged on the pool body 11 on the side of the sewage outlet, and the three-way pipe 13 passes through the middle mouth end 13C and the sewage outlet. Cooperate with the connection, put the middle end 13C of the three-way pipe 13 into the sewage outlet, and cooperate with the sewage outlet, (that is, the middle end 13C essentially forms the sewage outlet), the upper end 13A of the three-way pipe 13 is high At the height of the sewage inlet 12, to prevent floating objects from entering the tee pipe from the upper port 13A, there is a gap between the lower port 13B of the tee pipe 13 and the bottom of the pool body 11; The mouth is connected with the bottom of the anaerobic treatment tank 2, and the sewage 15 enters the anaerobic treatment tank 2 and turns from bottom to top, which is conducive to the anaerobic treatment of the sewage in the anaerobic treatment tank 2; the lower mouth end of the three-way pipe The gap with the bottom of the pool body is 20cm-30cm. Its working principle is: the sewage 15 entering the sewage collection tank from the sewage inlet 12 enters from the lower port 13B of the three-way pipe and is discharged into the anaerobic treatment pool 2 through the sewage outlet connected with the middle port 13C. Therefore, the sewage 15 that enters the pool body from the sewage inlet 12 will not enter the sewage outlet through the lower port 3B, and will not block the sewage outlet, and the floating substances will float in the sewage collection tank 1. Salvage through a net bag; or deposit in the pool to form sludge 4, and then remove it; therefore, this kind of sewage pool filters the floating debris in the sewage pool through a three-way pipe, and there will be no clogging during the filtering process, eliminating the need for cleaning The process of filtering the grid net improves the efficiency of domestic sewage treatment.

Example 3

As shown in Figure 1, Figure 2, and Figure 5, a new type of rural domestic sewage treatment system includes a sewage collection pool 1, an anaerobic treatment pool 2, a sludge sedimentation pool 3, a purification pool 4, and a wetland 5 connected in sequence. The anaerobic treatment tank 2 and the sludge settling tank 3 are communicated by a rain and sewage diversion device 6; the rain and sewage diversion device 6 includes a channel 61 and a partition support 65, and the channel 61 consists of a left ditch wall 62, The right ditch wall 63 and the ditch bottom 64 are formed, and one end of the partition support 65 is fixed to the upper part of the right ditch wall 63, and the other end is fixed to the middle and upper part of the ditch bottom 64, that is, the above-mentioned partition support 65 separates the channel 61 into rainwater Open ditch a (district) and sewer ditch b (district); the above-mentioned sewer ditch b is a channel surrounded by the right ditch wall 63, the partition support 65 and the ditch bottom 64, and the rainwater open ditch a is formed by the left ditch wall 62, the partition support 65 and the passage surrounded by ditch bottom 64. When it rains, most of the rainwater quickly passes through the rainwater ditch a area, preventing a large amount of rainwater from converging with the raw sewage in the sewage ditch b, realizing the diversion of rain and sewage, greatly reducing the total amount of domestic sewage, and the partition support 65 is easy to Remove from the right ditch wall 63, so it can be cleaned regularly, and it is convenient for decontamination.

Further, the upper part (or middle upper part) of the right ditch wall 63 is provided with a groove 66, and the middle part of the ditch bottom 64 is provided with a groove 67, and the two ends of the partition support 65 are respectively fixed in the two grooves 66, 67 in.

Preferably, the groove 67 of the ditch bottom 64 is provided with a filler 68 for fastening the partition support, the filler 68 is higher than the bottom surface of the ditch bottom 64, and the filler 68 is earth, stone or Wood block, when preventing rain, rainwater invades in the sewage dark ditch b; Simultaneously filling material 68 is earth, stone block or block, and it is very simple to take materials locally.

Further preferably, the partition support 65 is an elastic bamboo braided support, the partition support forms a right-angle corner surface, and the cross-section of the sewage culvert is rectangular. The elastic bamboo support is easy to take, no secondary pollution, and the local people can burn it as firewood after the bamboo support is aged.

Sewage collection tank 1 has been redesigned simultaneously, sewage collection tank 1 comprises pool body 11, is provided with sewage inlet 12 and sewage outlet on pool body 11, is provided with three-way pipe 13 at sewage outlet place, and described three-way pipe 13 has three openings, which are respectively the upper port 13A, the lower port 13B and the middle port 13C; the three-way pipe 13 is arranged on the pool body 11 on the side of the sewage outlet, and the three-way pipe 13 passes through the middle mouth end 13C and the sewage outlet. Cooperate with the connection, put the middle end 13C of the three-way pipe 13 into the sewage outlet, and cooperate with the sewage outlet, (that is, the middle end 13C essentially forms the sewage outlet), the upper end 13A of the three-way pipe 13 is high At the height of the sewage inlet 12, to prevent floating objects from entering the tee pipe from the upper port 13A, there is a gap between the lower port 13B of the tee pipe 13 and the bottom of the pool body 11; The mouth is connected with the bottom of the anaerobic treatment tank 2, and the sewage 15 enters the anaerobic treatment tank 2 and turns from bottom to top, which is conducive to the anaerobic treatment of the sewage in the anaerobic treatment tank 2; the lower mouth end of the three-way pipe The gap with the bottom of the pool body is 30cm. Its working principle is: the sewage 15 entering the sewage collection tank from the sewage inlet 12 enters from the lower port 13B of the three-way pipe and is discharged into the anaerobic treatment pool 2 through the sewage outlet connected with the middle port 13C. Therefore, the sewage 15 that enters the pool body from the sewage inlet 12 will not enter the sewage outlet through the lower port 3B, and will not block the sewage outlet, and the floating substances will float in the sewage collection tank 1. Salvage through a net bag; or deposit in the pool to form sludge 4, and then remove it; therefore, this kind of sewage pool filters the floating debris in the sewage pool through a three-way pipe, and there will be no clogging during the filtering process, eliminating the need for cleaning The process of filtering the grid net improves the efficiency of domestic sewage treatment.

Claims (8)

1. A novel rural domestic sewage treatment system, comprising successively connected sewage collection tanks, anaerobic treatment tanks, sludge settling tanks, purification tanks and wetlands, characterized in that: between the anaerobic treatment tanks and the sludge settling tanks It is connected through the rain and sewage diversion device; the rain and sewage diversion device includes a channel and a partition support, and the channel is composed of a left ditch wall, a right ditch wall and a ditch bottom; one end of the partition support and the upper part of the right ditch wall fixed, the other end is fixed with the middle part of the bottom of the ditch; the partition support separates the channel into a rainwater open ditch and a sewage dark ditch; the sewage dark ditch is surrounded by the right ditch wall, a partition support and the bottom of the ditch; Enclosed by the left ditch wall, partition supports and ditch bottom; The sewage collection tank includes a pool body, the pool body is provided with a sewage inlet and a sewage outlet; the sewage outlet is provided with a three-way pipe, and the three-way pipe includes an upper port, a lower port and a middle port; The three-way pipe is connected to the sewage outlet through the middle end, the upper end of the three-way pipe is higher than the height of the sewage inlet, and the lower end of the three-way pipe is installed between the bottom of the pool body. gap; the sewage collection pool communicates with the bottom of the anaerobic treatment pool through the sewage outlet. 2. A new type of rural domestic sewage treatment system according to claim 1, characterized in that: the middle and upper part of the right ditch wall is provided with a groove, the middle part of the bottom of the ditch is provided with a groove, and the partition support The two ends are respectively fixed in the two grooves. 3. A new type of rural domestic sewage treatment system according to claim 2, characterized in that: the groove at the bottom of the ditch is provided with fillers for fastening partition supports, and the fillers are higher than the bottom of the ditch the underside. 4. A new type of rural domestic sewage treatment system according to claim 3, characterized in that: the filling is earth, stones or wood. 5. A new type of rural domestic sewage treatment system according to claim 1, characterized in that: the partition support is an elastic bamboo support. 6. A new type of rural domestic sewage treatment system according to claim 1, characterized in that: the middle end of the three-way pipe is inserted into the sewage outlet and connected with the sewage outlet. 7. A new type of rural domestic sewage treatment system according to claim 6, characterized in that: the gap between the lower end of the three-way pipe and the bottom of the pool body is 10cm-40cm. 8. A new type of rural domestic sewage treatment system according to claim 7, characterized in that: the gap between the lower end of the three-way pipe and the bottom of the pool body is 20cm-30cm.