A rural domestic sewage source separation negative pressure cooperative collection system

Abstract

The present application provides a kind of rural domestic sewage source separation negative pressure collaborative collection system, including pipeline collection system and negative pressure system, pipeline collection system includes multiple vacuum collection boxes, each vacuum collection box includes black water collection chamber and grey water collection chamber, black water collection chamber is connected with household by black water gravity flow sewage pipe, and grey water collection chamber is connected with household by grey water gravity flow sewage pipe;Negative pressure system includes negative pressure tank, negative pressure drain main, negative pressure suction pipe, black water drain pipe and grey water drain pipe, negative pressure tank includes black water bin and grey water bin, each vacuum collection box is connected with negative pressure drain main, black water drain pipe is connected with the outlet of black water bin, grey water drain pipe is connected with the outlet of grey water bin, and negative pressure suction pipe is connected with the air outlet of negative pressure tank.The present application adopts the mode of negative pressure drainage, can carry out quality collection and transport on rural domestic sewage at source, reduces investment cost and operating cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the rural domestic sewage treatment technical field, especially to a rural domestic sewage source separation negative pressure cooperative collection system. BACKGROUND

[0002] The rural domestic sewage in China is generally divided into two categories: one is grey water generated by kitchen water, household washing and daily washing, accounting for 50-80% of the total amount of rural domestic sewage, mainly organic and inorganic pollutants, and the pollution degree is low; the other is black water generated by human excreta and flushing water, mainly physiological pollutants, with high content of pollutant and pathogenic bacteria, and high subsequent treatment requirements. Compared with urban industrial sewage, the rural sewage contains less heavy metal pollutants and organic pollutants, and contains a large amount of nitrogen, phosphorus and potassium nutrients, and has strong biodegradability.

[0003] At present, the rural domestic sewage treatment mostly adopts a centralized treatment mode of simultaneously collecting black water and grey water, mixing all sewage from different sources for treatment, which increases the complexity of the treatment system and is not conducive to the recovery and utilization of nutrients in the sewage. And some rural sewage projects in the prior art have adopted source separation, which requires the construction of two sets of pipelines to collect black water and grey water respectively, with high investment and operation cost and low economic benefit. SUMMARY

[0004] The present application relates to the rural domestic sewage treatment technical field, especially to a rural domestic sewage source separation negative pressure cooperative collection system.

[0005] The present application provides a rural domestic sewage source separation negative pressure cooperative collection system, comprising:

[0006] A pipeline collection system comprising a plurality of vacuum collection boxes, each of the vacuum collection boxes comprising a black water collection chamber and a grey water collection chamber, the black water collection chamber being connected to a household through a black water gravity flow sewage pipe, and the grey water collection chamber being connected to the household through a grey water gravity flow sewage pipe;

[0007] A negative pressure system comprising a negative pressure tank, a negative pressure drainage main pipe, a negative pressure suction pipe, a black water drainage pipe and a grey water drainage pipe, the negative pressure tank comprising a black water bin and a grey water bin; each of the vacuum collection boxes is connected to the negative pressure drainage main pipe through a negative pressure drainage branch pipe, the negative pressure drainage main pipe is connected to the inlet of the black water bin and the inlet of the grey water bin, the black water drainage pipe is connected to the outlet of the black water bin, the grey water drainage pipe is connected to the outlet of the grey water bin, and the negative pressure suction pipe is connected to the air outlet of the negative pressure tank.

[0008] According to the rural domestic sewage source separation negative pressure cooperative collection system provided by the application, the vacuum collection box is provided with a single-chip microcomputer;

[0009] A black water liquid level sensor is arranged in the black water collection chamber, and the black water liquid level sensor is pre-set with a black water highest sensing liquid level and a black water starting sensing liquid level; a black water discharge negative pressure valve is arranged at the outlet of the black water collection chamber, and the working pressure of the black water discharge negative pressure valve is-0.05Mpa to-0.07Mpa; the black water liquid level sensor and the black water discharge negative pressure valve are electrically connected with the single-chip microcomputer respectively.

[0010] A grey water liquid level sensor is arranged in the grey water collection chamber, and the grey water liquid level sensor is pre-set with a grey water highest sensing liquid level and a grey water starting sensing liquid level; a grey water discharge negative pressure valve is arranged at the outlet of the grey water collection chamber, and the working pressure of the grey water discharge negative pressure valve is-0.05Mpa to-0.07Mpa; the grey water liquid level sensor and the grey water discharge negative pressure valve are electrically connected with the single-chip microcomputer respectively.

[0011] According to the rural domestic sewage source separation negative pressure cooperative collection system provided by the application, the volume ratio of the black water collection chamber to the grey water collection chamber is 1:5.

[0012] According to the rural domestic sewage source separation negative pressure cooperative collection system provided by the application, the number of the negative pressure drainage branch pipes corresponds to the number of the vacuum collection boxes, and the black water collection chamber and the grey water collection chamber of each vacuum collection box are connected with the corresponding negative pressure drainage branch pipe.

[0013] According to the rural domestic sewage source separation negative pressure cooperative collection system provided by the application, a first control valve is arranged on the negative pressure drainage main pipe; the negative pressure drainage main pipe is connected with the black water tank through a first branch pipe, and the negative pressure drainage main pipe is connected with the grey water tank through a second branch pipe; a second control valve is arranged on the first branch pipe, and a third control valve is arranged on the second branch pipe.

[0014] According to the rural domestic sewage source separation negative pressure cooperative collection system provided by the application, the negative pressure suction pipe comprises an air suction pipe section and an air exhaust pipe section, and a negative pressure pump is connected between the air suction pipe section and the air exhaust pipe section; a fourth control valve is arranged on the air suction pipe section.

[0015] According to the rural domestic sewage source separation negative pressure cooperative collection system provided by the application, a black water sewage pump and a fifth control valve are arranged on the black water sewage pipe respectively, and the fifth control valve is arranged between the black water sewage pump and the negative pressure tank; a grey water sewage pump and a sixth control valve are arranged on the grey water sewage pipe respectively, and the sixth control valve is arranged between the grey water sewage pump and the negative pressure tank.

[0016] According to the rural domestic sewage source separation negative pressure cooperative collection system provided by the application, the working pressure of the negative pressure tank is-0.09Mpa-1Mpa; the negative pressure tank is respectively provided with a pressure transmitter, a black water level meter and a grey water level meter; the pressure transmitter is arranged at the upper portion of the negative pressure tank; the black water level meter is arranged in the black water bin; and the grey water level meter is arranged in the grey water bin.

[0017] According to the rural domestic sewage source separation negative pressure cooperative collection system provided by the application, the PLC controller is electrically connected with the single-chip microcomputer, the negative pressure pump, the black water sewage pump, the grey water sewage pump, the pressure transmitter, the black water level meter, the grey water level meter, the first control valve, the second control valve, the third control valve, the fourth control valve, the fifth control valve and the sixth control valve.

[0018] According to the rural domestic sewage source separation negative pressure cooperative collection system provided by the application, the black water sewage pipe is connected with a black water integrated treatment device; and the grey water sewage pipe is connected with a grey water pretreatment device.

[0019] The rural domestic sewage source separation negative pressure cooperative collection system provided by the application comprises a pipeline collection system and a negative pressure system, wherein the pipeline collection system comprises a plurality of vacuum collection boxes, each vacuum collection box comprises a black water collection chamber and a grey water collection chamber, the black water collection chamber is connected with a household through a black water gravity flow sewage pipe, and the grey water collection chamber is connected with the household through a grey water gravity flow sewage pipe; that is, the black water gravity flow collected from adjacent households is collected through the black water collection chamber of the vacuum collection box, and the grey water gravity flow collected from adjacent households is collected through the grey water collection chamber of the vacuum collection box, so that the rural domestic sewage is collected in a quality separation mode at the source; the negative pressure system comprises a negative pressure tank, a negative pressure drainage main pipe, a negative pressure suction pipe, a black water sewage pipe and a grey water sewage pipe, the negative pressure tank comprises a black water bin and a grey water bin, each vacuum collection box is connected with the negative pressure drainage main pipe through a negative pressure drainage branch pipe, the negative pressure drainage main pipe is connected with the inlet of the black water bin and the inlet of the grey water bin, the black water sewage pipe is connected with the outlet of the black water bin, the grey water sewage pipe is connected with the outlet of the grey water bin, and the negative pressure suction pipe is connected with the air outlet of the negative pressure tank; in use, the negative pressure suction pipe can generate negative pressure by suction of the negative pressure tank, the black water and the grey water collected in each vacuum collection box can be sequentially transported to the black water bin and the grey water bin of the negative pressure tank through the negative pressure drainage main pipe, and then the black water in the black water bin is transported and treated through the black water sewage pipe, and the grey water in the grey water bin is transported and treated through the grey water sewage pipe. Therefore, the rural domestic sewage source separation negative pressure cooperative collection system provided by the application can collect and transport the rural domestic sewage in a quality separation mode at the source, and reduces the investment cost and the operation cost. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the rural domestic sewage source separation negative pressure collaborative collection system of the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Vacuum collection box; 2. Black water gravity flow sewage pipe; 3. Grey water gravity flow sewage pipe; 4. Resident; 5. Negative pressure tank; 501. Black water tank; 502. Grey water tank; 6. Negative pressure drainage main pipe; 7. Black water sewage pipe; 8. Grey water sewage pipe; 9. Negative pressure drainage branch pipe; 10. Integrated black water treatment equipment; 11. Grey water pretreatment equipment; 12. Constructed wetland; 13. First control valve; 14. First branch pipe; 15. Second control valve; 16. Second branch pipe; 17. Third control valve; 18. Suction pipe section; 19. Exhaust pipe section; 20. Negative pressure pump; 21. Fourth control valve; 22. Black water sewage pump; 23. Fifth control valve; 24. Grey water sewage pump; 25. Sixth control valve. Detailed Implementation

[0024] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0026] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and do not connote or imply any relative importance or any priority. Thus, features with a "first", "second", "third" designation can include one or more of the described features, either explicitly or implicitly. In the description of the present application, the meaning of "a", "an" and "the" is intended to include one or more than one, unless otherwise indicated. In addition, the terms "mounting", "connected", "connecting" should be construed broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] As shown in Figure 1 The rural domestic sewage source separation negative pressure cooperative collection system of the embodiment of the present application comprises a pipeline collection system and a negative pressure system.

[0028] The pipeline collection system comprises a plurality of vacuum collection boxes 1. Each vacuum collection box 1 comprises a black water collection chamber and a grey water collection chamber. The black water collection chamber is connected with a household 4 through a black water gravity flow sewage pipe 2, and the grey water collection chamber is connected with the household 4 through a grey water gravity flow sewage pipe 3. That is, black water gravity flow from adjacent households can be collected through the black water collection chamber of the vacuum collection box 1, and grey water gravity flow from adjacent households can be collected through the grey water collection chamber of the vacuum collection box 1, so as to collect rural domestic sewage by quality at the source.

[0029] The negative pressure system comprises a negative pressure tank 5, a negative pressure drainage main pipe 6, a negative pressure suction pipe, a black water drainage pipe 7 and a grey water drainage pipe 8. The negative pressure tank 5 comprises a black water bin 501 and a grey water bin 502. The black water bin 501 is used for storing black water, and the grey water bin 502 is used for storing grey water. The negative pressure suction pipe is connected with an air outlet of the negative pressure tank 5, and the negative pressure tank 5 can be suctioned through the negative pressure suction pipe to generate negative pressure in the negative pressure tank 5. Each vacuum collection box 1 is connected with the negative pressure drainage main pipe 6 through a negative pressure drainage branch pipe 9. The negative pressure drainage main pipe 6 is connected with an inlet of the black water bin 501 and an inlet of the grey water bin 502, respectively. The black water drainage pipe 7 is connected with an outlet of the black water bin 501, and the grey water drainage pipe 8 is connected with an outlet of the grey water bin 502.

[0030] In use, through intermittent cooperative negative pressure suction operation of the black water collection chamber and the grey water collection chamber of each vacuum collection box 1, through negative pressure suction work of the negative pressure drain main pipe 6 and the negative pressure tank 5, the black water and the grey water collected by each vacuum collection box 1 can be sequentially transported to the corresponding black water bin 501 and the grey water bin 502 in the negative pressure tank 5, so that the sequential transportation of the black water and the grey water is realized. Then the black water in the black water bin 501 can be transported and treated through the black water drain pipe 7, and the grey water in the grey water bin 502 can be transported and treated through the grey water drain pipe 8.

[0031] Therefore, the rural domestic sewage source separation negative pressure cooperative collection system can collect and transport the rural domestic sewage at the source, and the sequential transportation of the black water and the grey water can be realized through one set of negative pressure system, so that the investment cost and the operation cost are effectively reduced.

[0032] Specifically, one vacuum collection box 1 can be used in cooperation with multiple adjacent households 4, and the black water and the grey water generated in the multiple households 4 can be collected simultaneously through one vacuum collection box 1, so that the number of equipment used is saved, and the investment cost and the operation cost are further reduced.

[0033] Specifically, the number of negative pressure drain branch pipes 9 corresponds to the number of vacuum collection boxes 1, and the black water collection chamber and the grey water collection chamber of each vacuum collection box 1 are connected to the corresponding negative pressure drain branch pipe 9.

[0034] Specifically, since the proportion of grey water in the total amount of rural domestic sewage is usually greater than that of black water, the volume ratio of the black water collection chamber to the grey water collection chamber in one vacuum collection box 1 can be set to 1:5.

[0035] Of course, the volume ratio of the black water collection chamber to the grey water collection chamber can also be set according to the actual proportion of grey water and black water in the total amount of rural domestic sewage.

[0036] Specifically, the black water drain pipe 7 is connected to the black water integrated treatment equipment 10, so that the collected black water is treated by the black water integrated treatment equipment 10 and then reused.

[0037] The grey water drain pipe 8 is connected to the grey water pretreatment equipment 11, so that the collected grey water is treated by the grey water pretreatment equipment 11 and then reused, for example, the treated grey water can be discharged to the artificial wetland 12 for use.

[0038] In some embodiments of the present application, each vacuum collection box 1 is provided with a single-chip microcomputer.

[0039] The black water level sensor is provided with a black water highest sensing liquid level and a black water starting sensing liquid level. A black water discharge negative pressure valve is arranged at the outlet of each black water collecting chamber, and the working pressure of the black water discharge negative pressure valve is-0.05Mpa to-0.07Mpa. Each black water level sensor and each black water discharge negative pressure valve are electrically connected to the corresponding single-chip microcomputer.

[0040] The grey water level sensor is provided with a grey water highest sensing liquid level and a grey water starting sensing liquid level. A grey water discharge negative pressure valve is arranged at the outlet of each grey water collecting chamber, and the working pressure of the grey water discharge negative pressure valve is-0.05Mpa to-0.07Mpa. Each grey water level sensor and each grey water discharge negative pressure valve are electrically connected to the corresponding single-chip microcomputer.

[0041] That is, in the same vacuum collecting box 1, the detection data of the black water level sensor and the grey water level sensor can be received by the single-chip microcomputer to determine the liquid level state in the black water collecting chamber and the grey water collecting chamber. The opening and closing state of the black water discharge negative pressure valve and the grey water discharge negative pressure valve can be controlled by the single-chip microcomputer to realize the sewage drainage of the black water collecting chamber or the grey water collecting chamber in the vacuum collecting box 1.

[0042] In some embodiments of the present application, a first control valve 13 is arranged on the negative pressure drainage main pipe 6. The negative pressure drainage main pipe 6 is connected to the black water tank 501 through a first branch pipe 14, and a second control valve 15 is arranged on the first branch pipe 14. The negative pressure drainage main pipe 6 is connected to the grey water tank 502 through a second branch pipe 16, and a third control valve 17 is arranged on the second branch pipe 16. That is, the flow state of the negative pressure drainage main pipe 6 can be controlled by the first control valve 13, the flow state of the first branch pipe 14 can be controlled by the second control valve 15, and the flow state of the second branch pipe 16 can be controlled by the third control valve 17.

[0043] In some embodiments of the present application, the negative pressure suction pipe includes an air suction pipe section 18 and an air exhaust pipe section 19, and a negative pressure pump 20 is connected between the air suction pipe section 18 and the air exhaust pipe section 19. A fourth control valve 21 is arranged on the air suction pipe section 18. That is, the negative pressure tank 5 can be negatively pressure-sucked by the negative pressure pump 20, so that the negative pressure tank 5 is kept in a certain range of negative pressure range, and it is ensured that the grey water and the black water can be smoothly sucked into the grey water tank 502 and the black water tank 501 of the negative pressure tank 5. The working pressure of the negative pressure tank 5 is-0.09Mpa to 1Mpa.

[0044] In some embodiments of the present application, the black water drain pipe 7 is respectively provided with a black water drain pump 22 and a fifth control valve 23, and the fifth control valve 23 is arranged between the black water drain pump 22 and the negative pressure tank 5. The flow state of the black water drain pipe 7 can be controlled through the fifth control valve 23, and the black water in the black water tank 501 can be transported to the black water integrated treatment equipment 10 through the black water drain pipe 7 for treatment through the black water drain pump 22.

[0045] In some embodiments of the present application, the gray water drain pipe 8 is respectively provided with a gray water drain pump 24 and a sixth control valve 25, and the sixth control valve 25 is arranged between the gray water drain pump 24 and the negative pressure tank 5. The flow state of the gray water drain pipe 8 can be controlled through the sixth control valve 25, and the gray water in the gray water tank 502 can be transported to the gray water pretreatment equipment 11 for treatment through the gray water drain pipe 8 through the gray water drain pump 24.

[0046] In some embodiments of the present application, the negative pressure tank 5 is respectively provided with a pressure transmitter, a black water level meter and a gray water level meter, the pressure transmitter is arranged at the upper part of the negative pressure tank 5, the black water level meter is arranged in the black water tank 501, and the gray water level meter is arranged in the gray water tank 502. That is, the pressure in the negative pressure tank 5 can be obtained in real time through the pressure transmitter, the gray water level in the black water tank 501 can be obtained in real time through the black water level meter, and the gray water level in the gray water tank 502 can be obtained in real time through the gray water level meter.

[0047] In some embodiments of the present application, the rural domestic sewage source separation negative pressure collaborative collection system further comprises a PLC controller, and the PLC controller is electrically connected with each single-chip microcomputer, the negative pressure pump 20, the black water drain pump 22, the gray water drain pump 24, the pressure transmitter, the black water level meter, the gray water level meter, the first control valve 13, the second control valve 15, the third control valve 17, the fourth control valve 21, the fifth control valve 23 and the sixth control valve 25.

[0048] The working principle of the rural domestic sewage source separation negative pressure collaborative collection system of the embodiment of the present application is as follows:

[0049] The rural domestic sewage generated by the household 4 can be collected through each vacuum collection box 1, wherein the black water of the household gravity flow is collected through the black water collection chamber of the vacuum collection box 1, and the gray water of the household gravity flow is collected through the gray water collection chamber of the vacuum collection box 1, so that the rural domestic sewage is collected at the source.

[0050] When the black water collected in the black water collecting chamber of one of the vacuum collecting tanks 1 reaches the black water highest sensing liquid level, the single-chip microcomputer of the vacuum collecting tank 1 receives the black water highest sensing liquid level signal of the black water liquid level sensor, at this time, the single-chip microcomputer will control the opening of the black water discharge negative pressure valve of the vacuum collecting tank 1, and the single-chip microcomputer sends a request signal to the controller for the coordinated opening of the black water discharge negative pressure valve. The controller sends the request signal to the single-chip microcomputers of the remaining vacuum collecting tanks 1, and the single-chip microcomputers of the remaining vacuum collecting tanks 1 receive the signal and judge whether the black water liquid level of each has reached the black water starting sensing liquid level according to the black water liquid level detection data of each. If the black water starting sensing liquid level has been reached, the single-chip microcomputer of the corresponding vacuum collecting tank 1 will control the corresponding black water discharge negative pressure valve to be opened coordinately, so as to realize the coordinated work of the black water discharge of multiple vacuum collecting tanks 1.

[0051] Similarly, when the grey water collected in the grey water collecting chamber of one of the vacuum collecting tanks 1 reaches the black water highest sensing liquid level, the single-chip microcomputer of the vacuum collecting tank 1 receives the grey water highest sensing liquid level signal of the grey water liquid level sensor, at this time, the single-chip microcomputer will control the opening of the grey water discharge negative pressure valve of the vacuum collecting tank 1, and the single-chip microcomputer sends a request signal to the controller for the coordinated opening of the grey water discharge negative pressure valve. The controller sends the request signal to the single-chip microcomputers of the remaining vacuum collecting tanks 1, and the single-chip microcomputers of the remaining vacuum collecting tanks 1 receive the signal and judge whether the grey water liquid level of each has reached the grey water starting sensing liquid level according to the grey water liquid level detection data of each. If the grey water starting sensing liquid level has been reached, the single-chip microcomputer of the corresponding vacuum collecting tank 1 will control the corresponding grey water discharge negative pressure valve to be opened coordinately, so as to realize the coordinated work of the grey water discharge of multiple vacuum collecting tanks 1.

[0052] Thus, through the intermittent coordinated negative pressure suction drainage of the black water collecting chamber and the grey water collecting chamber of each vacuum collecting tank 1, the separate delivery of black water and grey water is realized.

[0053] Through the coordinated work of the black water discharge of multiple vacuum collecting tanks 1, the collected black water can be delivered to the black water warehouse 501 of the negative pressure tank 5 for storage; through the coordinated work of the grey water discharge of multiple vacuum collecting tanks 1, the collected grey water can be delivered to the grey water warehouse 502 of the negative pressure tank 5 for storage. When the black water liquid level meter detects that the liquid level in the black water warehouse 501 reaches the highest storage liquid level, the controller will control the opening of the black water blowdown pump 22 and the fifth control valve 23, so as to deliver the black water in the black water warehouse 501 to the black water integrated treatment equipment 10 for centralized treatment. When the grey water liquid level meter detects that the liquid level in the grey water warehouse 502 reaches the highest storage liquid level, the controller will control the opening of the grey water blowdown pump 24 and the sixth control valve 25, so as to deliver the grey water in the grey water warehouse 502 to the grey water pretreatment equipment 11 for centralized treatment.

[0054] In summary, the rural domestic sewage source separation negative pressure cooperative collection system of the embodiment of the present application can collect and transport rural domestic sewage from the source, reduces the difficulty and energy consumption of subsequent treatment process, improves the treatment efficiency and resource utilization rate, optimizes the regional water resource allocation by separately treating and recycling black water and grey water, reduces the regional water supply pressure, and realizes the optimization of the "economic-ecological-social" benefits of regional water resources.

[0055] The rural domestic sewage source separation negative pressure cooperative collection system of the embodiment of the present application realizes the sequential delivery of black water and grey water by using a set of negative pressure system through the intermittent cooperative negative pressure drainage mode of black water and grey water, maximally reduces the engineering quantity and buried depth, and reduces the construction investment by more than 30% compared with the traditional mode.

[0056] The rural domestic sewage source separation negative pressure cooperative collection system of the embodiment of the present application adopts the vacuum negative pressure drainage mode, can solve the problems of feces transportation, pollutant leakage, high transportation cost, etc., realizes the reduction and stabilization of high-concentration excreta in situ, and can achieve the purpose of resource utilization in situ or in other places, reduces the hidden danger of secondary pollution to water bodies or land caused by transfer or transportation.

[0057] The rural domestic sewage source separation negative pressure cooperative collection system of the embodiment of the present application is flexible and has strong adaptability, can be combined and adjusted according to different geographical environmental conditions, is suitable for various newly-built or reconstructed rural domestic sewage projects, has simple system operation and maintenance, can realize unattended operation, remote monitoring, ensures the stability of water quantity and quality of the back-end treatment equipment, and obtains good environmental benefits.

[0058] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A rural domestic sewage source separation negative pressure collaborative collection system, characterized in that, The utility model relates to a kind of black and grey water collection systems, comprising: Pipeline collection system, including multiple vacuum collection boxes, each of the vacuum collection box includes black water collection chamber and grey water collection chamber, the black water collection chamber is connected with household by black water gravity flow sewage pipe, the grey water collection chamber is connected with the household by grey water gravity flow sewage pipe; Negative pressure system, including negative pressure tank, negative pressure drain main pipe, negative pressure suction pipe, black water drain pipe and grey water drain pipe, the negative pressure tank includes black water bin and grey water bin;Each of the vacuum collection box is connected with the negative pressure drain main pipe by negative pressure drain branch pipe, the negative pressure drain main pipe is connected with the inlet of the black water bin and the inlet of the grey water bin respectively, the black water drain pipe is connected with the outlet of the black water bin, the grey water drain pipe is connected with the outlet of the grey water bin, the negative pressure suction pipe is connected with the air outlet of the negative pressure tank; The vacuum collection box is provided with a single-chip microcomputer; Black water level sensor is provided in the black water collection chamber, and the black water level sensor is pre-set with a black water highest sensing liquid level and a black water starting sensing liquid level;Black water discharge negative pressure valve is provided at the outlet of the black water collection chamber, and the working pressure of the black water discharge negative pressure valve is-0.05Mpa~-0.07Mpa;The black water level sensor and the black water discharge negative pressure valve are electrically connected with the single-chip microcomputer respectively; Grey water level sensor is provided in the grey water collection chamber, and the grey water level sensor is pre-set with a grey water highest sensing liquid level and a grey water starting sensing liquid level;Grey water discharge negative pressure valve is provided at the outlet of the grey water collection chamber, and the working pressure of the grey water discharge negative pressure valve is-0.05Mpa~-0.07Mpa;The grey water level sensor and the grey water discharge negative pressure valve are electrically connected with the single-chip microcomputer respectively; The number of negative pressure drain branch pipes corresponds to the number of vacuum collection boxes, and the black water collection chamber and the grey water collection chamber of the vacuum collection box are connected with the corresponding negative pressure drain branch pipe; First control valve is provided on the negative pressure drain main pipe;The negative pressure drain main pipe is connected with the black water bin through first branch pipe, and the negative pressure drain main pipe is connected with the grey water bin through second branch pipe;Second control valve is provided on the first branch pipe, and third control valve is provided on the second branch pipe; When the black water collected in the black water collection chamber of one of the vacuum collection boxes reaches the black water highest sensing liquid level, the single-chip microcomputer of the vacuum collection box receives the black water highest sensing liquid level signal of the black water level sensor, and controls the black water discharge negative pressure valve of the vacuum collection box to open, while sending a request signal to the controller to open the black water discharge negative pressure valve cooperatively;If the black water starting sensing liquid level of each of the remaining vacuum collection boxes has been reached, the single-chip microcomputer of the corresponding vacuum collection box controls the corresponding black water discharge negative pressure valve to open cooperatively, to realize the cooperative work of the black water discharge of multiple vacuum collection boxes. When the grey water collected in the grey water collecting chamber of one of the vacuum collecting boxes reaches the highest sensing liquid level of the grey water, the single-chip microcomputer of the vacuum collecting box receives the highest sensing liquid level signal of the grey water liquid level sensor and controls the opening of the grey water discharge negative pressure valve of the vacuum collecting box, while sending a request signal to the controller for the coordinated opening of the grey water discharge negative pressure valve; if the remaining vacuum collecting boxes have reached the grey water starting sensing liquid level, the single-chip microcomputer of the corresponding vacuum collecting box controls the corresponding grey water discharge negative pressure valve to be opened coordinately, so as to realize the coordinated operation of the grey water discharge of the multiple vacuum collecting boxes.

2. The rural domestic sewage source separation negative pressure collaborative collection system according to claim 1, characterized in that, The volume ratio of the black water collecting chamber to the grey water collecting chamber is 1:

5.

3. The rural domestic sewage source separation negative pressure collaborative collection system according to claim 1, characterized in that, The negative pressure suction pipe comprises an air suction pipe section and an air exhaust pipe section, and a negative pressure pump is connected between the air suction pipe section and the air exhaust pipe section; a fourth control valve is arranged on the air suction pipe section.

4. The rural domestic sewage source separation negative pressure collaborative collection system according to claim 3, characterized in that, A black water sewage pump and a fifth control valve are arranged on the black water sewage pipe, and the fifth control valve is arranged between the black water sewage pump and the negative pressure tank; a grey water sewage pump and a sixth control valve are arranged on the grey water sewage pipe, and the sixth control valve is arranged between the grey water sewage pump and the negative pressure tank.

5. The rural domestic sewage source separation negative pressure collaborative collection system according to claim 4, characterized in that, The working pressure of the negative pressure tank is-0.09Mpa to 1Mpa; a pressure transmitter, a black water liquid level meter and a grey water liquid level meter are arranged in the negative pressure tank, the pressure transmitter is arranged at the upper part of the negative pressure tank, the black water liquid level meter is arranged in the black water storage chamber, and the grey water liquid level meter is arranged in the grey water storage chamber.

6. The rural domestic sewage source separation negative pressure coordinated collection system according to claim 5, characterized in that, The PLC controller is electrically connected with the single-chip microcomputers, the negative pressure pump, the black water sewage pump, the grey water sewage pump, the pressure transmitter, the black water liquid level meter, the grey water liquid level meter, the first control valve, the second control valve, the third control valve, the fourth control valve, the fifth control valve and the sixth control valve.

7. The rural domestic sewage source separation negative pressure collaborative collection system according to any one of claims 1 to 6, characterized in that, The black water sewage pipe is connected with a black water integrated treatment device, and the grey water sewage pipe is connected with a grey water pretreatment device.

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