CN210505871U

CN210505871U - Domestic sewage treatment device according with four types of water quality on earth surface

Info

Publication number: CN210505871U
Application number: CN201921464009.2U
Authority: CN
Inventors: 路传波; 王俊
Original assignee: Beijing Beyond Technologies Co ltd
Current assignee: Beijing Beyond Technologies Co ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-05-12
Anticipated expiration: 2029-09-04

Abstract

The utility model relates to a domestic sewage treatment device which accords with surface four-class water quality, comprising a main water inlet pipe, a separation tank, a first air inlet pipe, an air compressor, a first water outlet pipe, a first sedimentation tank, a first water inlet cover, a second water outlet pipe, a third water outlet pipe, a first reaction tank, a first water outlet pipe, a first mud outlet pipe, a first pump body, a filter, a second mud outlet pipe, a second reaction tank, a first clapboard, a first mud inlet pipe, a third mud outlet pipe, a second pump body, a sewage discharge assembly, a reaction assembly, a separation assembly and a sedimentation assembly; the other ends of the first sludge inlet pipe and the third sludge outlet pipe are connected with the separation component, the reaction component is connected with the liquid outlet end of the filter, the precipitation component is connected with the separation component, and the other end of the second water outlet pipe is connected with the precipitation component; the sewage discharge assembly is arranged on the main water inlet pipe; the utility model discloses possess the function that the layering was handled, can produce the water source that accords with four kinds of quality of water on earth's surface and below four kinds of quality of water to can produce the water source of multiple standard as required, thereby improve the utilization ratio greatly, the rational utilization resource.

Description

Domestic sewage treatment device according with four types of water quality on earth surface

Technical Field

The utility model relates to a domestic sewage treatment device which accords with four types of water quality on earth surface.

Background

In national standards of China, according to environmental functions and protection targets of surface water and water areas, five types are sequentially divided according to the height of the functions: the class I is mainly suitable for head water and national natural protection areas; the II type is mainly suitable for primary protection areas of surface water sources of centralized drinking water areas, habitats of rare aquatic organisms, fish and shrimp production fields, cable bait fields of larvae and juvenile fishes and the like; class III is mainly suitable for fishery water areas and swimming areas such as centralized drinking water surface water source areas, fish and shrimp overwintering fields, migration passages, aquaculture areas and the like; the IV is mainly suitable for general industrial water areas and recreational water areas which are not directly contacted with human bodies; the class V is mainly suitable for agricultural water areas and water areas with general landscape requirements.

In the field of domestic sewage treatment, different domestic sewage treatment devices are respectively adopted according to different water quality requirements, the existing domestic sewage treatment device which accords with four types of water quality on the earth surface does not have the capability of layered treatment, only can generate single standard water quality, is low in utilization rate, causes resource waste, and is to be further improved.

SUMMERY OF THE UTILITY MODEL

To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that a water source that possesses the function of layered processing in order to output multiple standard as required is provided to improve the utilization ratio greatly, the rational utilization the domestic sewage treatment plant who accords with four types of quality of water on earth's surface of resource.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a domestic sewage treatment device conforming to surface four-class water quality comprises a main water inlet pipe, a separation tank, a first air inlet pipe, an air compressor, a first water outlet pipe, a first sedimentation tank, a first water inlet cover, a second water outlet pipe, a third water outlet pipe, a first reaction tank, a first water discharge pipe, a first mud outlet pipe, a first pump body, a filter, a second mud outlet pipe, a second reaction tank, a first partition plate, a first mud inlet pipe, a third mud outlet pipe, a second pump body, a sewage discharge assembly, a reaction assembly, a separation assembly and a sedimentation assembly, and is characterized in that one end of the main water inlet pipe is connected to the bottom of the separation tank, one end of the first air inlet pipe is inserted into the separation tank, the other end of the first air inlet pipe is connected to the air compressor, one end of the first water outlet pipe is connected to the separation tank, the other end of the first water outlet pipe is connected to the bottom of the first sedimentation tank, one end of the third water outlet pipe is connected to the upper side, the other end of the third water outlet pipe is connected to the bottom of the first reaction tank; one end of the first drainage pipe is connected above one side of the first reaction tank, one end of the second sludge outlet pipe is connected to the liquid inlet end of the filter, the other end of the second sludge outlet pipe is connected in the second reaction tank, the first partition plate is vertically arranged at the bottom of the inner side of the second reaction tank and is arranged on the right side of the other end of the second sludge outlet pipe, the second sludge outlet pipe is connected with two first sludge outlet pipes, the outer ends of the two first sludge outlet pipes are connected in the first reaction tank, the two first sludge outlet pipes are respectively provided with a first pump body, and the two first pump bodies are respectively arranged in the first reaction tank; one end of the first sludge inlet pipe is connected in the second reaction tank and is arranged on the left side of the first partition plate, one end of the third sludge outlet pipe is connected in the second reaction tank and is arranged on the right side of the first partition plate, the other ends of the first sludge inlet pipe and the third sludge outlet pipe are both connected with the separation component, the second pump body is arranged on the third sludge outlet pipe and is arranged in the second reaction tank, the reaction component is connected with the liquid outlet end of the filter, the sedimentation component is connected with the separation component, one end of the second water outlet pipe is provided with a first water inlet cover, the first water inlet cover is arranged in the first sedimentation tank, and the other end of the second water outlet pipe is connected with the sedimentation component; the blowdown assembly is arranged on the main water inlet pipe.

Preferably, the reaction assembly comprises a second sedimentation tank, a second water inlet cover, a first water inlet pipe, a first shunt pipe, a second shunt pipe and a second water inlet pipe; the one end of first inlet tube is connected on the play liquid end of filter, the other end of first inlet tube is provided with the second cover of intaking, the second cover of intaking sets up in the second sedimentation tank, the bottom of second sedimentation tank is connected with two first shunt tubes, two the one end at the second inlet tube is all connected to the outer end of first shunt tube, the other end of second inlet tube is provided with two second shunt tubes.

Preferably, the separation assembly comprises a third reaction tank, a second partition plate, a first connecting pipe, a first aeration pipe, a first air pump, a fourth sludge outlet pipe, a fifth sludge outlet pipe and a third pump body; the second baffle plate is arranged in the middle of the bottom of the inner side of the third reaction tank, the other end of the first sludge inlet pipe is connected in the third reaction tank, the other end of the third sludge outlet pipe is connected on one side of the bottom of the third reaction tank and arranged on the left side of the second baffle plate, one end of the first connecting pipe is connected on the top of the third reaction tank and arranged on the left side of the second baffle plate, the other end of the first connecting pipe is connected on the upper end of one side of the second sedimentation tank, one end of the first aeration pipe is connected in the third reaction tank and arranged on the right side of the second baffle plate, the first air pump is arranged at the other end of the first aeration pipe, one end of the third pump body is connected on the top of the fifth closed box body, one end of the fourth sludge outlet pipe is connected in the third reaction tank and arranged on the right side of the second baffle plate, one end of the fifth sludge outlet pipe is connected on the fourth sludge outlet pipe, and the fifth sludge outlet pipe are both provided with a third pump body, and the two third pump bodies are arranged in the third reaction tank.

Preferably, the sedimentation assembly comprises a fourth reaction tank, a third partition plate, a fourth partition plate, a second aeration pipe, a gas guide pipe, a second gas pump, a third gas pump, a fifth reaction tank, a third sedimentation tank, a fifth partition plate, a sixth partition plate, a second water discharge pipe and a stirrer; the other end of the fourth sludge outlet pipe is connected to the bottom of one side of a fourth reaction tank, the third partition plate is arranged in the fourth reaction tank, and the fourth partition plate is arranged at the top of the fourth reaction tank and on the right side of the third partition plate; the fourth reaction tank is internally provided with two second aeration pipes which are respectively arranged at the left side and the right side of the fourth partition plate, the upper ends of the two second aeration pipes are connected to the gas pipe, the second gas pump is connected with the gas pipe, one end of the gas pipe is connected to the gas pipe and is arranged at the downstream side of the second gas pump, the third gas pump is arranged at the other end of the gas pipe, the third sedimentation tank is arranged at one side of the fourth reaction tank, and the fifth reaction tank is arranged between the third sedimentation tank and the fourth reaction tank; the vertical setting of fifth baffle is in the bottom of fifth reaction tank, the vertical setting of sixth baffle is at the top of third sedimentation tank, the upside of fifth reaction tank is provided with two agitators, one end of second drain pipe is connected in one side upper end of third sedimentation tank, two the outer end of second shunt pipe is all connected in one side bottom of third sedimentation tank.

Preferably, the sewage discharging assembly comprises a first sewage discharging pipe, a second sewage discharging pipe, a first sewage sucking pipe, a second sewage sucking pipe, a first lift pump, a second connecting pipe, a second lift pump and a third connecting pipe; one end of the second sewage draining pipe is connected to the feeding end of the second lifting pump, and the other end of the second sewage draining pipe is connected to the top of the second sedimentation tank; the discharge end at the second elevator pump is connected to the one end of third connecting pipe, the other end of third connecting pipe is connected on total inlet tube, the one end of first soil pick-up pipe is inserted in the third sedimentation tank and is located the left side of sixth baffle, be provided with two second soil pick-up pipes, two in the fifth reaction tank the left side of fifth baffle is all located to the second soil pick-up pipe, the other end of first soil pick-up pipe and two second soil pick-up pipes all is provided with a first elevator pump, and is three all be connected with a second connecting pipe on the discharge end of first elevator pump, and is three the outer end of second connecting pipe all is connected on total inlet tube, the one end of first sewage discharge pipe is connected on total inlet tube, the other end of first sewage discharge pipe is connected on the drain of filter.

Compared with the prior art, the utility model has the advantages of: the utility model discloses possess the function that the layering was handled, can produce the water source that accords with four kinds of quality of water on earth's surface and below four kinds of quality of water to can produce the water source of multiple standard as required, thereby improve the utilization ratio greatly, the rational utilization resource.

Drawings

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

Detailed Description

As shown in fig. 1, a domestic sewage treatment device conforming to the four types of water quality on the earth surface comprises a main water inlet pipe 1, a separation tank 2, a first air inlet pipe 7, an air compressor 8, a first water outlet pipe 9, a first sedimentation tank 10, a first water inlet cover 52, a second water outlet pipe 51, a third water outlet pipe 11, a first reaction tank 12, a first water outlet pipe 13, a first sludge outlet pipe 14, a first pump body 15, a filter 53, a second sludge outlet pipe 16, a second reaction tank 17, a first partition plate 18, a first sludge inlet pipe 19, a third sludge outlet pipe 20, a second pump body 21, a sewage discharge assembly, a reaction assembly, a separation assembly and a sedimentation assembly; one end of a main water inlet pipe 1 is connected to the bottom of a separation tank 2, one end of a first air inlet pipe 7 is inserted into the separation tank 2, the other end of the first air inlet pipe 7 is connected to an air compressor 8, one end of a first water outlet pipe 9 is connected into the separation tank 2, the other end of the first water outlet pipe 9 is connected to the bottom of a first sedimentation tank 10, one end of a third water outlet pipe 11 is connected to the upper side of one side of the first sedimentation tank 10, and the other end of the third water outlet pipe 11 is connected to the bottom of a first reaction tank 12; one end of a first drainage pipe 13 is connected above one side of the first reaction tank 12, one end of a second sludge outlet pipe 16 is connected to the liquid inlet end of a filter 53, the other end of the second sludge outlet pipe 16 is connected in the second reaction tank 17, a first partition plate 18 is vertically arranged at the bottom of the inner side of the second reaction tank 17 and is arranged on the right side of the other end of the second sludge outlet pipe 16, the second sludge outlet pipe 16 is connected with two first sludge outlet pipes 14, the outer ends of the two first sludge outlet pipes 14 are connected in the first reaction tank 12, a first pump body 15 is arranged on each of the two first sludge outlet pipes 14, and the two first pump bodies 15 are arranged in the first reaction tank 12; one end of a first sludge inlet pipe 19 is connected in the second reaction tank 17 and arranged on the left side of the first partition plate 18, one end of a third sludge outlet pipe 20 is connected in the second reaction tank 17 and arranged on the right side of the first partition plate 18, the other ends of the first sludge inlet pipe 19 and the third sludge outlet pipe 20 are both connected with a separation component, a second pump body 21 is arranged on the third sludge outlet pipe 20 and arranged in the second reaction tank 17, the reaction component is connected with the liquid outlet end of a filter 53, the sedimentation component is connected with the separation component, one end of a second water outlet pipe 51 is provided with a first water inlet cover 52, the first water inlet cover 52 is arranged in the first sedimentation tank 10, and the other end of the second water outlet pipe 51 is connected with the sedimentation component; the sewage discharge assembly is arranged on the main water inlet pipe 1; the reaction assembly comprises a second sedimentation tank 54, a second water inlet cover 56, a first water inlet pipe 55, a first shunt pipe 47, a second shunt pipe 45 and a second water inlet pipe 46; one end of the first water inlet pipe 55 is connected to the liquid outlet end of the filter 53, the other end of the first water inlet pipe 55 is provided with a second water inlet cover 56, the second water inlet cover 56 is arranged in a second sedimentation tank 54, the bottom of the second sedimentation tank 54 is connected with two first shunt pipes 47, the outer ends of the two first shunt pipes 47 are connected to one end of the second water inlet pipe 46, and the other end of the second water inlet pipe 46 is provided with two second shunt pipes 45; the separation assembly comprises a third reaction tank 22, a second partition plate 23, a first connecting pipe 34, a first aeration pipe 24, a first air pump 38, a fourth sludge outlet pipe 25, a fifth sludge outlet pipe 27 and a third pump body 26; the second baffle plate 23 is arranged at the middle of the bottom of the inner side of the third reaction tank 22, the other end of the first sludge inlet pipe 19 is connected in the third reaction tank 22, the other end of the third sludge outlet pipe 20 is connected at one side of the bottom of the third reaction tank 22 and is arranged at the left side of the second baffle plate 23, one end of the first connecting pipe 34 is connected at the top of the third reaction tank 22 and is arranged at the left side of the second baffle plate 23, the other end of the first connecting pipe 34 is connected at the upper end of one side of the second sedimentation tank 54, one end of the first aeration pipe 24 is connected in the third reaction tank 22 and is arranged at the right side of the second baffle plate 23, the first air pump 38 is arranged at the other end of the first aeration pipe 24, one end of the third pump body 26 is connected at the top of the fifth closed box body 5, one end of the fourth sludge outlet pipe 25 is connected in the third reaction tank 22 and is arranged at the right side of the second baffle plate 23, one end of, the fourth sludge outlet pipe 25 and the fifth sludge outlet pipe 27 are both provided with a third pump body 26, and the two third pump bodies 26 are both arranged inside the third reaction tank 22; the sedimentation assembly comprises a fourth reaction tank 28, a third clapboard 29, a fourth clapboard 30, a second aeration pipe 31, a gas conveying pipe 32, a gas guide pipe 35, a second air pump 33, a third air pump 36, a fifth reaction tank 40, a third sedimentation tank 41, a fifth clapboard 42, a sixth clapboard 43, a second water discharge pipe 44 and a stirrer 57; the other end of the fourth sludge outlet pipe 25 is connected to the bottom of one side of the fourth reaction tank 28, the third partition plate 29 is arranged in the fourth reaction tank 28, and the fourth partition plate 30 is arranged at the top of the fourth reaction tank 28 and on the right side of the third partition plate 29; the fourth reaction tank 28 is provided with two second aeration pipes 31, the two second aeration pipes 31 are respectively arranged at the left side and the right side of the fourth clapboard 30, the upper ends of the two second aeration pipes 31 are both connected to the air pipe 32, the second air pump 33 is connected with the air pipe 32, one end of the air guide pipe 35 is connected to the air pipe 32 and is arranged at the downstream side of the second air pump 33, the third air pump 36 is arranged at the other end of the air guide pipe 35, the third sedimentation tank 41 is arranged at one side of the fourth reaction tank 28, and the fifth reaction tank 40 is arranged between the third sedimentation tank 41 and the fourth reaction tank 28; the fifth partition plate 42 is vertically arranged at the bottom of the fifth reaction tank 40, the sixth partition plate 43 is vertically arranged at the top of the third sedimentation tank 41, two stirrers 57 are arranged at the upper side of the fifth reaction tank 40, one end of the second water discharge pipe 44 is connected to the upper end of one side of the third sedimentation tank 41, and the outer ends of the two second shunt pipes 45 are connected to the bottom of one side of the third sedimentation tank 41; the sewage discharging assembly comprises a first sewage discharging pipe 39, a second sewage discharging pipe 37, a first sewage sucking pipe 58, a second sewage sucking pipe 61, a first lift pump 59, a second connecting pipe 60, a second lift pump 62 and a third connecting pipe 63; one end of the second sewage draining pipe 37 is connected with the feeding end of the second lift pump 62, and the other end of the second sewage draining pipe 37 is connected with the top of the second sedimentation tank 54; the discharge end at second elevator pump 62 is connected to the one end of third connecting pipe 63, the other end of third connecting pipe 63 is connected on total inlet tube 1, the one end of first sewage suction pipe 58 inserts in third sedimentation tank 41 and locates the left side of sixth baffle 43, be provided with two second sewage suction pipe 61 in the fifth reaction tank 40, the left side of fifth baffle 42 is all located to two second sewage suction pipe 61, the other end of first sewage suction pipe 58 and two second sewage suction pipe 61 all is provided with a first elevator pump 59, all be connected with a second connecting pipe 60 on the discharge end of three first elevator pump 59, the outer end of three second connecting pipe 60 is all connected on total inlet tube 1, the one end of first sewage discharge pipe 39 is connected on total inlet tube 1, the other end of first sewage discharge pipe 39 is connected on the drain of filter 53.

When the device is used, sewage is introduced into the separation tank 2 through the main water inlet pipe 1, separated sludge is loaded into the truck 6 through the horizontal conveying line 4 and the inclined conveying line 5, primary clean water enters the first sedimentation tank 10 through the first water outlet pipe 9, pressure gas generated by the air compressor 8 is introduced into the separation tank 2 through the first air inlet pipe 7, and secondary clean water enters the first reaction tank 12 through the third water outlet pipe 11 and is discharged for use through the first water outlet pipe 13 after sedimentation; the settled sewage enters the second sludge outlet pipe 16 through the two first sludge outlet pipes 14 respectively under the action of the two first pump bodies 15 and then enters the second reaction tank 17, the sewage in the second reaction tank 17 enters the third reaction tank 22 through the first sludge inlet pipe 19, the upper clear water enters the second sedimentation tank 54 through the first connecting pipe 34, and the upper clear water enters the filter 53 through the second water inlet cover 56 and the first water inlet pipe 55 to be filtered and used for completing the use of the three-stage clear water; the sewage at the bottom of the second sedimentation tank 54 enters the second water inlet pipe 46 through the two first branch pipes 47 and then enters the bottom of the third sedimentation tank 41 through the two second branch pipes 45, the sewage at the bottom of the third reaction tank 22 enters the left bottom of the fourth reaction tank 28 through the fourth sludge outlet pipe 25 and the fifth sludge outlet pipe 27 by virtue of the two third pump bodies 26, the sewage in the fourth reaction tank 28 slowly rises to cross the third partition plate 29 to enter the right side of the fourth reaction tank 28 and further slowly enter the fifth reaction tank 40, and further is fully mixed with the added disinfectant under the action of the two stirrers 57, then the upper clear water passes through the fifth partition plate 42, drills the sixth partition plate 43 and enters the third sedimentation tank 41, and is discharged for use through the second water discharge pipe 44 after final sedimentation to finish the use of the four-stage clear water, the air generated by the operation of the first air pump 38 enters the third reaction tank 22 through the first aeration pipe 24 to accelerate the reaction, the air generated by the operation of the second air pump 33 and the third air pump 36 enters the two second aeration pipes 31 through the air conveying pipe 32 and the air guide pipe 35 respectively so as to enter the bottom of the fourth reaction tank 28 to accelerate the reaction; the bottom layer sewage in the fifth reaction tank 40 and the middle layer sewage respectively enters three second connecting pipes 60 through a first sewage suction pipe 58 and two second sewage suction pipes 61 under the driving of three first lifting pumps 59, and finally returns to the main water inlet pipe 1 for recirculation; the bottom layer sewage in the third sedimentation tank 41 and the fifth reaction tank 40 is respectively returned to the main water inlet pipe 1 through two second sewage suction pipes 61 to be recycled under the driving of three first lifting pumps 59; under the action of the second lift pump 62, the sewage at the top of the second sedimentation tank 54 enters the third connecting pipe 63 through the second sewage discharge pipe 37 and then returns to the main water inlet pipe 1 for recirculation; the first sewage discharge pipe 39 enters the main water inlet pipe 1 for recirculation, and the upper layer clean water in the first sedimentation tank 10 enters the second water outlet pipe 51 by virtue of the first water inlet cover 52 and then is converged into the second water inlet pipe 46; the sewage at the bottom of the second reaction tank 17 enters a third reaction tank 22 through a third sludge outlet pipe 20 by means of a second pump body 21.

In the field of domestic sewage treatment, different domestic sewage treatment devices are respectively adopted according to different water quality requirements, the existing domestic sewage treatment device which accords with four types of water quality on the earth surface does not have the capability of layered treatment, only can generate single standard water quality, has low utilization rate and causes resource waste; the utility model discloses possess the function that the layering was handled, can produce the water source that accords with four kinds of quality of water on earth's surface and below four kinds of quality of water to can produce the water source of multiple standard as required, thereby improve the utilization ratio greatly, the rational utilization resource.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A domestic sewage treatment device conforming to surface four-class water quality comprises a main water inlet pipe, a separation tank, a first air inlet pipe, an air compressor, a first water outlet pipe, a first sedimentation tank, a first water inlet cover, a second water outlet pipe, a third water outlet pipe, a first reaction tank, a first water discharge pipe, a first sludge outlet pipe, a first pump body, a filter, a second sludge outlet pipe, a second reaction tank, a first partition plate, a first sludge inlet pipe, a third sludge outlet pipe, a second pump body, a sewage discharge assembly, a reaction assembly, a separation assembly and a sedimentation assembly, and is characterized in that one end of the main water inlet pipe is connected to the bottom of the separation tank, one end of the first air inlet pipe is inserted into the separation tank, the other end of the first air inlet pipe is connected to the air compressor, one end of the first water outlet pipe is connected to the separation tank, the other end of the first water outlet pipe is connected to the bottom of the first sedimentation tank, one end of the third water outlet pipe is connected to the upper part of one side of the first sedimentation tank, and the other end of the third water outlet pipe is connected to the bottom of the first reaction tank; one end of the first drainage pipe is connected above one side of the first reaction tank, one end of the second sludge outlet pipe is connected to the liquid inlet end of the filter, the other end of the second sludge outlet pipe is connected in the second reaction tank, the first partition plate is vertically arranged at the bottom of the inner side of the second reaction tank and is arranged on the right side of the other end of the second sludge outlet pipe, the second sludge outlet pipe is connected with two first sludge outlet pipes, the outer ends of the two first sludge outlet pipes are connected in the first reaction tank, the two first sludge outlet pipes are respectively provided with a first pump body, and the two first pump bodies are respectively arranged in the first reaction tank; one end of the first sludge inlet pipe is connected in the second reaction tank and is arranged on the left side of the first partition plate, one end of the third sludge outlet pipe is connected in the second reaction tank and is arranged on the right side of the first partition plate, the other ends of the first sludge inlet pipe and the third sludge outlet pipe are both connected with the separation component, the second pump body is arranged on the third sludge outlet pipe and is arranged in the second reaction tank, the reaction component is connected with the liquid outlet end of the filter, the sedimentation component is connected with the separation component, one end of the second water outlet pipe is provided with a first water inlet cover, the first water inlet cover is arranged in the first sedimentation tank, and the other end of the second water outlet pipe is connected with the sedimentation component; the blowdown assembly is arranged on the main water inlet pipe.

2. The domestic sewage treatment device according to the fourth type of water quality on the earth's surface of claim 1, wherein the reaction assembly comprises a second sedimentation tank, a second water inlet cover, a first water inlet pipe, a first shunt pipe, a second shunt pipe and a second water inlet pipe; the one end of first inlet tube is connected on the play liquid end of filter, the other end of first inlet tube is provided with the second cover of intaking, the second cover of intaking sets up in the second sedimentation tank, the bottom of second sedimentation tank is connected with two first shunt tubes, two the one end at the second inlet tube is all connected to the outer end of first shunt tube, the other end of second inlet tube is provided with two second shunt tubes.

3. The domestic sewage treatment device according to the fourth type of water quality on the earth's surface of claim 2, wherein the separation assembly comprises a third reaction tank, a second partition plate, a first connecting pipe, a first aeration pipe, a first air pump, a fourth sludge outlet pipe, a fifth sludge outlet pipe and a third pump body; the second baffle plate is arranged in the middle of the bottom of the inner side of the third reaction tank, the other end of the first sludge inlet pipe is connected in the third reaction tank, the other end of the third sludge outlet pipe is connected on one side of the bottom of the third reaction tank and arranged on the left side of the second baffle plate, one end of the first connecting pipe is connected on the top of the third reaction tank and arranged on the left side of the second baffle plate, the other end of the first connecting pipe is connected on the upper end of one side of the second sedimentation tank, one end of the first aeration pipe is connected in the third reaction tank and arranged on the right side of the second baffle plate, the first air pump is arranged at the other end of the first aeration pipe, one end of the third pump body is connected on the top of the fifth closed box body, one end of the fourth sludge outlet pipe is connected in the third reaction tank and arranged on the right side of the second baffle plate, one end of the fifth sludge outlet pipe is connected on the fourth sludge outlet pipe, and the fifth sludge outlet pipe are both provided with a third pump body, and the two third pump bodies are arranged in the third reaction tank.

4. The domestic sewage treatment device according with the surface four-type water quality of the ground, as claimed in claim 3, wherein the sedimentation component comprises a fourth reaction tank, a third partition plate, a fourth partition plate, a second aeration pipe, a gas guide pipe, a second gas pump, a third gas pump, a fifth reaction tank, a third sedimentation tank, a fifth partition plate, a sixth partition plate, a second drain pipe and a stirrer; the other end of the fourth sludge outlet pipe is connected to the bottom of one side of a fourth reaction tank, the third partition plate is arranged in the fourth reaction tank, and the fourth partition plate is arranged at the top of the fourth reaction tank and on the right side of the third partition plate; the fourth reaction tank is internally provided with two second aeration pipes which are respectively arranged at the left side and the right side of the fourth partition plate, the upper ends of the two second aeration pipes are connected to the gas pipe, the second gas pump is connected with the gas pipe, one end of the gas pipe is connected to the gas pipe and is arranged at the downstream side of the second gas pump, the third gas pump is arranged at the other end of the gas pipe, the third sedimentation tank is arranged at one side of the fourth reaction tank, and the fifth reaction tank is arranged between the third sedimentation tank and the fourth reaction tank; the vertical setting of fifth baffle is in the bottom of fifth reaction tank, the vertical setting of sixth baffle is at the top of third sedimentation tank, the upside of fifth reaction tank is provided with two agitators, one end of second drain pipe is connected in one side upper end of third sedimentation tank, two the outer end of second shunt pipe is all connected in one side bottom of third sedimentation tank.

5. The domestic sewage treatment device according to the fourth type of water quality on the earth's surface of claim 4, wherein the sewage discharging assembly comprises a first sewage discharging pipe, a second sewage discharging pipe, a first sewage suction pipe, a second sewage suction pipe, a first lift pump, a second connecting pipe, a second lift pump and a third connecting pipe; one end of the second sewage draining pipe is connected to the feeding end of the second lifting pump, and the other end of the second sewage draining pipe is connected to the top of the second sedimentation tank; the discharge end at the second elevator pump is connected to the one end of third connecting pipe, the other end of third connecting pipe is connected on total inlet tube, the one end of first soil pick-up pipe is inserted in the third sedimentation tank and is located the left side of sixth baffle, be provided with two second soil pick-up pipes, two in the fifth reaction tank the left side of fifth baffle is all located to the second soil pick-up pipe, the other end of first soil pick-up pipe and two second soil pick-up pipes all is provided with a first elevator pump, and is three all be connected with a second connecting pipe on the discharge end of first elevator pump, and is three the outer end of second connecting pipe all is connected on total inlet tube, the one end of first sewage discharge pipe is connected on total inlet tube, the other end of first sewage discharge pipe is connected on the drain of filter.