CN215886727U

CN215886727U - Integrated domestic sewage treatment device for enhancing denitrification

Info

Publication number: CN215886727U
Application number: CN202122393914.7U
Authority: CN
Inventors: 许金明; 王健; 岳士鹏; 任金铭; 杨凤仪; 宋嘉禾; 潘长健; 顾悦; 曹堃
Original assignee: TIANJIN HUAYU MEMBRANE TECHNOLOGY CO LTD
Current assignee: TIANJIN HUAYU MEMBRANE TECHNOLOGY CO LTD
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-02-22
Anticipated expiration: 2031-09-30

Abstract

The utility model discloses an integrated domestic sewage treatment device for enhanced nitrogen removal, and relates to the technical field of sewage treatment. The device can further get rid of total nitrogen when the temperature is lower, guarantees the discharge to reach standard of the play water quality of water when the temperature is lower.

Description

Integrated domestic sewage treatment device for enhancing denitrification

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to an integrated domestic sewage treatment device for enhanced denitrification.

Background

In general, distributed domestic sewage treatment refers to sewage generated by human activities such as communities, residential districts, scenic spots, vacation areas, airports, expressway service areas, rural villages and the like, and mainly comprises treatment of four water such as toilet wastewater, bath wastewater, laundry wastewater, kitchen wastewater and the like. Particularly, the small-scale domestic sewage treatment in rural areas is realized because the water quality and the water quantity change along with the weather conditions, village population, living habits and rural water supply conditions, the village population changes greatly along with seasons, particularly in the northern area, the seasons are clear, the change of the sewage quantity and the water quality in winter and summer is larger, and the sewage quantity in winter and the temperature are low.

In the conventional water quality indexes, the most difficult standard is total nitrogen, and the total nitrogen mainly comprises ammonia nitrogen, organic nitrogen, nitrate nitrogen, nitrite nitrogen and oxynitride, wherein the ammonia nitrogen mainly comes from ammonia water and inorganic substances such as ammonium chloride and the like. At present, the distributed domestic sewage treatment mostly adopts a biochemical method, and the reaction principle of N in the whole process is as follows: the method utilizes the combined action of nitrifying bacteria and denitrifying bacteria to convert ammonia nitrogen in water into nitrogen so as to achieve the aim of denitrification. Firstly, the ammonia nitrogen is converted into nitrite and nitrate through nitrifying bacteria and nitrosobacteria, and then denitrification is carried out to convert the nitrate into nitrogen. The growth and reproduction of the microorganism are influenced by temperature, pH, carbon source, nitrogen source, phosphorus and the like, wherein the optimum temperature of the nitrifying bacteria is 20-30 ℃, and the digestion rate is reduced when the temperature is below 15 ℃; the optimum temperature of denitrifying bacteria is 20-40 deg.C, and when the temperature is lower than 15 deg.C, the proliferation rate and metabolism rate are reduced. It can be seen that when the outside temperature is low, especially in cold winter, the total nitrogen is affected by temperature and the like, and the risk of not reaching the standard exists.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides an integrated domestic sewage treatment device for enhanced denitrification, which can further remove the total nitrogen at a lower temperature and ensure that the effluent quality reaches the standard and is discharged at the lower temperature.

In order to achieve the purpose, the utility model provides the following scheme:

the utility model provides an integrated domestic sewage treatment device for enhanced nitrogen removal, which comprises an adjusting tank, a sludge tank, an anoxic tank, an aerobic tank, an MBR tank, a denitrification filter tank, a clean water tank, a dosing assembly, an MBR product water pump, a raw water pump, a sludge reflux pump, an aeration assembly, a membrane assembly and an electric control cabinet, wherein the adjusting tank, the anoxic tank, the aerobic tank and the MBR tank are sequentially arranged, a water inlet is arranged at one side of the adjusting tank, which is far away from the anoxic tank, a grid is arranged at the inner side of the water inlet, a liquid level monitoring part is arranged on the inner wall of the adjusting tank, the setting height of the liquid level monitoring part is lower than that of the water inlet, the raw water pump is arranged in the adjusting tank, the raw water pump is used for conveying sewage in the adjusting tank into the anoxic tank, and the bottom of the anoxic tank is communicated with the bottom of the aerobic tank, the top of the aerobic tank is communicated with the top of the MBR tank, the aeration component is arranged at the bottom of the aerobic tank, the membrane component is arranged in the MBR tank, the inlet of the MBR water production pump is connected with the MBR tank through a connecting pipeline, the outlet of the MBR water production pump is connected with a first pipeline and a second pipeline, the first pipeline is connected with the denitrification filter tank, the first pipeline is provided with a first valve, the second pipeline is connected with the clean water tank, the second pipeline is provided with a second valve, the denitrification filter tank is connected with the clean water tank, and the setting height of the denitrification filter tank is higher than that of the clean water tank; the sludge reflux pump is arranged in the MBR tank, a third pipeline and a fourth pipeline are connected to the outlet of the sludge reflux pump, the third pipeline is connected with the anoxic tank, a third valve is arranged on the third pipeline, the fourth pipeline is connected with the sludge tank, and a fourth valve is arranged on the fourth pipeline; the chemical feeding assembly is used for adding a carbon source into the anoxic tank and the denitrification filter tank, the chemical feeding assembly is used for adding a phosphorus removing agent into the anoxic tank or the aerobic tank, and the chemical feeding assembly is used for adding a disinfectant into the clean water tank; the chemical feeding assembly, the MBR water production pump, the raw water pump, the sludge reflux pump, the aeration assembly, the liquid level monitoring part, the first valve, the second valve, the third valve and the fourth valve are all connected with the electric control cabinet.

Preferably, still include the dive agitator, the dive agitator set up in oxygen deficiency pond bottom is kept away from the one end in good oxygen pond, the dive agitator with automatically controlled cabinet is connected.

Preferably, the oxygen-deficient pond also comprises a temperature sensor, wherein the temperature sensor is arranged in the oxygen-deficient pond and is connected with the electric control cabinet.

Preferably, the device room is arranged on one side, away from the aerobic tank, of the MBR tank, and the electric control cabinet, the chemical adding assembly, the denitrification filter tank and the MBR water production pump are arranged in the device room.

Preferably, the aeration assembly comprises an aeration disc and a fan, the aeration disc is arranged at the bottom of the aerobic tank, the fan is arranged in the equipment room, the aeration disc is connected with the fan, and the fan is connected with the electric control cabinet.

Preferably, the device further comprises an MBR backwashing water pump, the MBR backwashing water pump is arranged in the equipment room, an inlet of the MBR backwashing water pump is connected with the clean water tank through a fifth pipeline, an outlet of the MBR backwashing water pump is connected with the MBR tank through a sixth pipeline, and the MBR backwashing water pump is connected with the electric control cabinet.

Preferably, the device also comprises a denitrification filter backwashing water pump, the denitrification filter backwashing water pump is arranged in the equipment room, the inlet of the denitrification filter backwashing water pump is connected with the clean water tank through a seventh pipeline, the outlet of the denitrification filter backwashing water pump is connected with the denitrification filter through an eighth pipeline, and the denitrification filter backwashing water pump is connected with the electric control cabinet.

Preferably, the clean water basin set up in the front end in MBR pond, just the clean water basin is located good oxygen pond with between the equipment room, the clean water basin is kept away from the upper portion of MBR pond one side is provided with the delivery port, the sludge impoundment set up in the front end of equalizing basin.

Preferably, the chemical feeding assembly comprises a carbon source chemical feeding box, a phosphorus removing agent chemical feeding box, a disinfectant chemical feeding box, a first metering pump, a second metering pump, a third metering pump and a fourth metering pump, two ends of the first metering pump are respectively connected with the carbon source chemical feeding box and the anoxic tank, two ends of the second metering pump are respectively connected with the carbon source chemical feeding box and the denitrification filter tank, one end of the third metering pump is connected with the phosphorus removing agent chemical feeding box, the other end of the third metering pump is connected with the anoxic tank or the aerobic tank, two ends of the fourth metering pump are respectively connected with the disinfectant chemical feeding box and the clean water tank, and the first metering pump, the second metering pump, the third metering pump and the fourth metering pump are connected with the electric control cabinet.

Preferably, the emergency water pump, the standby fan and the MBR water production standby pump are arranged in the equipment room, and the emergency water pump, the standby fan and the MBR water production standby pump are connected with the electric control cabinet.

Compared with the prior art, the utility model has the following technical effects:

the utility model provides an integrated domestic sewage treatment device for enhanced nitrogen removal, which is characterized in that an adjusting tank, an anoxic tank, an aerobic tank and an MBR tank are sequentially arranged, an inlet of an MBR water production pump is connected with the MBR tank through a connecting pipeline, an outlet of the MBR water production pump is connected with a first pipeline and a second pipeline, the first pipeline is connected with a denitrification filter tank, a first valve is arranged on the first pipeline, the second pipeline is connected with a clean water tank, a second valve is arranged on the second pipeline, the denitrification filter tank is connected with the clean water tank, and the setting height of the denitrification filter tank is higher than that of the clean water tank. Sewage gets into the equalizing basin and passes through the grid earlier, and then separates large granule material to guarantee the normal operating of follow-up processing unit, the oxygen deficiency pond can make the macromolecule organic pollutant micro molecule and non-soluble organic matter hydrolyze into the soluble material, makes difficult degradation material turn into easy biodegradable material, and denitrogenates sewage, and the major part organic substance in good oxygen pond and MBR pond can get rid of the sewage. When the outside temperature is higher, the MBR tank can reach the effluent standard, and the first valve is closed and the second valve is opened through the electric control cabinet, so that the produced water in the MBR tank directly enters the clean water tank; when the external temperature is low, particularly when the inlet water temperature is low in winter, the biological activity is poor, the water outlet of the MBR tank is difficult to reach the standard, the first valve is opened and the second valve is closed through the electric control cabinet, so that the MBR tank and the denitrification filter tank are connected in series for operation, further denitrification is performed in the denitrification filter tank, the produced water enters the clean water tank and is discharged after reaching the standard after disinfection, further total nitrogen is further removed by introducing the denitrification filter tank when the temperature is low, and the discharge of the outlet water quality reaching the standard when the temperature is low is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a top view of an integrated domestic sewage treatment apparatus for enhanced denitrification according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic diagram of the enhanced denitrification integrated domestic sewage treatment apparatus according to the present invention.

Description of reference numerals: 100. an integrated domestic sewage treatment device for strengthening denitrification; 1. a regulating tank; 2. a sludge tank; 3. an anoxic tank; 4. an aerobic tank; 5. an MBR tank; 6. a denitrification filter; 7. a clean water tank; 8. a dosing assembly; 81. a carbon source dosing box; 82. a phosphorus removing agent dosing box; 83. a disinfectant dosing tank; 9. a water inlet; 10. a raw water pump; 11. a communication port; 12. a submersible mixer; 13. an aeration disc; 14. a fan; 15. a membrane module; 16. a device room; 17. an electric control cabinet; 18. an MBR water production pump; 19. MBR backwashing water pump; 20. backwashing a water pump of the denitrification filter; 21. an emergency water pump; 22. a standby fan; 23. a MBR water production standby pump; 24. and (7) a water outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model aims to provide an integrated domestic sewage treatment device for enhanced denitrification, which can further remove total nitrogen at a lower temperature and ensure that the quality of outlet water reaches the standard and is discharged at the lower temperature.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1-3, the present embodiment provides an integrated domestic sewage treatment device 100 for enhanced nitrogen removal, which comprises an adjusting tank 1, a sludge tank 2, an anoxic tank 3, an aerobic tank 4, an MBR tank 5, a denitrification filter 6, a clean water tank 7, a chemical feeding component 8, an MBR product water pump 18, a raw water pump 10, a sludge reflux pump, an aeration component, a membrane component 15 and an electric control cabinet 17, wherein the adjusting tank 1, the anoxic tank 3, the aerobic tank 4 and the MBR tank 5 are sequentially arranged, a water inlet 9 is arranged on one side of the adjusting tank 1 away from the anoxic tank 3, a grid is arranged on the inner side of the water inlet 9, i.e. the grid is arranged on the inner wall of the adjusting tank 1, a liquid level monitoring component is arranged on the inner wall of the adjusting tank 1, the setting height of the liquid level monitoring component is lower than the setting height of the water inlet 9, the raw water pump 10 is arranged in the adjusting tank 1, the raw water pump 10 is used for conveying the sewage in the adjusting tank 1 to the anoxic tank 3, the bottom of the anoxic tank 3 is communicated with the bottom of the aerobic tank 4, the top of the aerobic tank 4 is communicated with the top of the MBR tank 5, the aeration component is arranged at the bottom of the aerobic tank 4, the membrane component 15 is arranged in the MBR tank 5, the inlet of the MBR product water pump 18 is connected with the MBR tank 5 through a connecting pipeline, the outlet of the MBR product water pump 18 is connected with a first pipeline and a second pipeline, the first pipeline is connected with the denitrification filter 6, the first pipeline is provided with a first valve, the second pipeline is connected with the clean water tank 7, the second pipeline is provided with a second valve, the denitrification filter 6 is connected with the clean water tank 7, the setting height of the denitrification filter 6 is higher than that of the clean water tank 7, so that sewage treated by the denitrification filter 6 in a natural state can flow into the clean water tank 7; the sludge reflux pump is arranged in the MBR tank 5, a third pipeline and a fourth pipeline are connected to the outlet of the sludge reflux pump, the third pipeline is connected with the anoxic tank 3, a third valve is arranged on the third pipeline, the fourth pipeline is connected with the sludge tank 2, and a fourth valve is arranged on the fourth pipeline; the chemical adding component 8 is used for adding a carbon source into the anoxic tank 3 and the denitrification filter 6, the chemical adding component 8 is used for adding a phosphorus removing agent into the anoxic tank 3 or the aerobic tank 4, and the chemical adding component 8 is used for adding a disinfectant into the clean water tank 7; the medicine adding component 8, the MBR water producing pump 18, the raw water pump 10, the sludge reflux pump, the aeration component, the liquid level monitoring part, the first valve, the second valve, the third valve and the fourth valve are all connected with the electric control cabinet 17.

In this embodiment, the opening and closing of the first valve and the second valve can be manually controlled by the electric control cabinet 17, for example, the denitrification filter 6 is used when the temperature is low in 1-3 months per year, and the denitrification filter 6 is not used when the temperature is high in 3-12 months per year. Specifically, when the outside temperature is high, the MBR tank 5 can reach the effluent standard, and the first valve is closed and the second valve is opened manually through the electric control cabinet 17, so that the produced water of the MBR tank 5 directly enters the clean water tank 7, that is, in this embodiment, the MBR tank 5 can surpass the denitrification filter 6 and be directly connected with the clean water tank 7 when the outside temperature is high; when the outside temperature is lower, the first valve is opened and the second valve is closed manually through the electric control cabinet 17, so that the MBR tank 5 and the denitrification filter tank 6 are connected in series for operation, the produced water enters the clean water tank 7, and the water is discharged after being disinfected and reaching the standard.

The device further comprises a submersible stirrer 12, wherein the submersible stirrer 12 is arranged at one end of the bottom of the anoxic pond 3, which is far away from the aerobic pond 4, and the submersible stirrer 12 is connected with an electric control cabinet 17. The submersible mixer 12 is used for mixing the water from the regulating tank 1 and the sludge returned from the MBR tank 5.

The oxygen-deficient pond oxygen-deficient device further comprises a temperature sensor, wherein the temperature sensor is arranged in the oxygen-deficient pond 3 and is connected with the electric control cabinet 17. The automatic control of the opening and closing of the first valve and the second valve by the electric control cabinet 17 is realized by arranging the temperature sensor to be matched with the electric control cabinet 17, specifically, the temperature sensor transmits the measured temperature of the water in the anoxic tank 3 to the electric control cabinet 17, the temperature is set to be 15 ℃ on the electric control cabinet 17, and when the measured temperature value is greater than the set temperature value, namely the temperature is higher, the electric control cabinet 17 controls the first valve to be closed and the second valve to be opened, so that the produced water of the MBR tank 5 directly enters the clean water tank 7; when the measured temperature value is smaller than the set temperature value, namely the temperature is lower, the electric control cabinet 17 controls the first valve to be opened and the second valve to be closed, so that the MBR tank 5 and the denitrification filter tank 6 are connected in series to operate, and the produced water enters the clean water tank 7.

The device room 16 is arranged on one side of the MBR tank 5 far away from the aerobic tank 4, and the electric control cabinet 17, the medicine adding assembly 8, the denitrification filter 6 and the MBR water production pump 18 are arranged in the device room 16.

Specifically, the aeration assembly comprises an aeration disc 13 and a fan 14, the aeration disc 13 is arranged at the bottom of the aerobic tank 4, the fan 14 is arranged in the equipment room 16, the aeration disc 13 is connected with the fan 14, and the fan 14 is connected with an electric control cabinet 17. When the aerobic tank works, the fan 14 is started through the electric control cabinet 17, and oxygen is supplied to the aerobic tank 4 through the aeration disc 13.

Still include MBR backwash water pump 19 in this embodiment, MBR backwash water pump 19 sets up in equipment room 16, and MBR backwash water pump 19's import is connected with clean water basin 7 through the fifth pipeline, and MBR backwash water pump 19's export is connected with MBR pond 5 through the sixth pipeline, and MBR backwash water pump 19 is connected with automatically controlled cabinet 17. After the membrane module 15 of the MBR tank 5 is used for a period of time, the membrane module 15 needs to be backwashed regularly, and the electric control cabinet 17 can clean the membrane module 15 by starting the MBR backwashing water pump 19 to convey water in the clean water tank 7 to the MBR tank 5.

The device is characterized by further comprising a denitrification filter backwashing water pump 20, wherein the denitrification filter backwashing water pump 20 is arranged in the equipment room 16, the inlet of the denitrification filter backwashing water pump 20 is connected with the clean water tank 7 through a seventh pipeline, the outlet of the denitrification filter backwashing water pump 20 is connected with the denitrification filter 6 through an eighth pipeline, and the denitrification filter backwashing water pump 20 is connected with the electric control cabinet 17. After the device is used for a period of time, the denitrification filter 6 needs to be backwashed regularly, and the electric control cabinet 17 can clean the denitrification filter 6 by starting the denitrification filter backwashing water pump 20 to convey water in the clean water tank 7 to the denitrification filter 6.

Specifically, equalizing basin 1, oxygen deficiency pond 3, good oxygen pond 4, MBR pond 5 and equipment room 16 set gradually from left to right, and clean water basin 7 sets up in the front end of MBR pond 5, and clean water basin 7 is located between good oxygen pond 4 and the equipment room 16, and the upper portion that MBR pond 5 one side was kept away from to clean water basin 7 is provided with delivery port 24, and sludge impoundment 2 sets up in the front end of equalizing basin 1.

Specifically, the dosing assembly 8 includes a carbon source dosing tank 81, a phosphorus removing agent dosing tank 82, a disinfectant dosing tank 83, a first metering pump, a second metering pump, a third metering pump and a fourth metering pump, both ends of the first metering pump are respectively connected with the carbon source dosing tank 81 and the anoxic tank 3, both ends of the second metering pump are respectively connected with the carbon source dosing tank 81 and the denitrification filter tank 6, one end of the third metering pump is connected with the phosphorus removing agent dosing tank 82, the other end of the third metering pump is connected with the anoxic tank 3 or the aerobic tank 4, the other end of the third metering pump is connected with the front end of the aerobic tank 4 in this embodiment, that is, the phosphorus removing agent is added into the aerobic tank 4, both ends of the fourth metering pump are respectively connected with the disinfectant dosing tank 83 and the clean water tank 7, and the first metering pump, the second metering pump, the third metering pump and the fourth metering pump are all connected with the electric control cabinet 17. Before adding the medicines, the adding amount of the anoxic tank 3, the denitrification filter 6, the aerobic tank 4 and the clean water tank 7 is respectively calculated through water quality, and then the quantitative adding of the medicines is respectively carried out through a first metering pump, a second metering pump, a third metering pump and a fourth metering pump.

In this embodiment, the phosphorus removal agent is PAC polyaluminum chloride and the disinfectant is sodium hypochlorite.

In this embodiment, the emergency water pump 21, the standby fan 22 and the MBR water production standby pump 23 are further included, the emergency water pump 21, the standby fan 22 and the MBR water production standby pump 23 are all arranged in the equipment room 16, and the emergency water pump 21, the standby fan 22 and the MBR water production standby pump 23 are all connected with the electric control cabinet 17. After the equipment room 16 is filled with water, the emergency water pump 21 is started to pump water to the outside of the equipment room 16.

Specifically, the upper end of equalizing basin 1 is provided with the maintenance manhole, is provided with the guide rail on the inner wall that equalizing basin 1 was provided with water inlet 9, and the grid is installed on the guide rail, can carry the grid to the outside of equalizing basin 1 through the maintenance manhole, and then is convenient for clear up, and the top of overhauing the manhole when this application device is in running state seals through the apron.

Specifically, the liquid level monitoring part is arranged in monitoring the liquid level in the equalizing basin 1, and when the liquid level monitoring part monitored the liquid level in the equalizing basin 1 and reached a take the altitude, automatically controlled cabinet 17 control raw water pump 10 started, if the equalizing basin 1 liquid level is low, automatically controlled cabinet 17 control raw water pump 10 stall, wait to set for when high the liquid level restart raw water pump 10 again, defeated to the oxygen deficiency pond 3 with the sewage in the equalizing basin 1. A communication port 11 is arranged between the regulating reservoir 1 and the anoxic reservoir 3, and the raw water pump 10 conveys the sewage in the regulating reservoir 1 to the anoxic reservoir 3 through the communication port 11. The liquid level monitoring component in this embodiment is a static pressure type liquid level meter.

The specific using process is as follows: the sewage is collected through the pipeline and automatically flows into the adjusting tank 1, and a grid is arranged in the adjusting tank 1 and used for separating large granular substances so as to ensure the normal operation of a subsequent treatment unit. A liquid level monitoring part is arranged in the adjusting tank 1, the raw water pump 10 is automatically controlled to stop, and the sewage is lifted to a biochemical treatment system for treatment. The biochemical treatment system consists of an anoxic denitrification part and an aerobic oxidation part. The sewage in the equalizing basin 1 is conveyed to an anoxic basin 3 through a raw water pump 10, and the anoxic can make the macromolecule organic pollutants into small molecules and the insoluble organic matters hydrolyzed into soluble substances, so that the substances which are difficult to degrade are converted into easily biodegradable substances, and the denitrification is performed through anoxic denitrification. The aerobic tank 4 and the MBR tank 5 can remove most organic substances in the sewage, are core parts of the whole biochemical treatment system, and only water and substances smaller than the filtering pore diameter of the membrane filaments in the membrane module 15 pass through the interception of the membrane module 15. When the outside temperature is higher, the MBR tank 5 can reach the effluent standard, the first valve is closed and the second valve is opened through the electric control cabinet 17, so that the produced water in the MBR tank 5 directly enters the clean water tank 7; when the outside temperature is lower, especially when the temperature of the inlet water is lower in winter, the biological activity is not good, the outlet water of the MBR tank 5 is difficult to reach the standard, the first valve is opened and the second valve is closed through the electric control cabinet 17, so that the MBR tank 5 and the denitrification filter 6 are connected in series for operation, further denitrification is performed in the denitrification filter 6, the produced water enters the clean water tank 7 and is discharged after being disinfected to reach the standard, further, the total nitrogen is further removed by introducing the denitrification filter 6 when the temperature is lower, and the quality of the outlet water is ensured to be discharged to the standard when the temperature is lower.

In the device operation in-process in this application, automatically controlled cabinet 17 control third valve is opened and the fourth valve is closed, make the sludge reflux pump in MBR pond 5 beat mixed liquor in oxygen deficiency pond 3 always, sludge concentration can be noted in daily operation, the artifical concentration that passes through the sludge concentration measuring apparatu and detect the sludge mixed liquor in MBR pond 5, when concentration is high (for example more than 8000 mg/L), close the third valve and open the fourth valve through automatically controlled cabinet 17, make the sludge mixed liquor in MBR pond 5 beat sludge impoundment 2 through the sludge reflux pump, mud is behind sludge impoundment 2 concentration, transport to having the processing of qualification sludge treatment unit to handle after handling through dung suction truck or portable sludge treatment equipment regularly.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the utility model.

Claims

1. An integrated domestic sewage treatment device for enhancing denitrification is characterized by comprising an adjusting tank, a sludge tank, an anoxic tank, an aerobic tank, an MBR tank, a denitrification filter tank, a clean water tank, a dosing assembly, an MBR water production pump, a raw water pump, a sludge reflux pump, an aeration assembly, a membrane assembly and an electric control cabinet, wherein the adjusting tank, the anoxic tank, the aerobic tank and the MBR tank are sequentially arranged, a water inlet is formed in one side of the adjusting tank, which is far away from the anoxic tank, a grating is arranged on the inner side of the water inlet, a liquid level monitoring part is arranged on the inner wall of the adjusting tank, the setting height of the liquid level monitoring part is lower than that of the water inlet, the raw water pump is arranged in the adjusting tank, the raw water pump is used for conveying sewage of the adjusting tank into the anoxic tank, and the bottom of the anoxic tank is communicated with the bottom of the aerobic tank, the top of the aerobic tank is communicated with the top of the MBR tank, the aeration component is arranged at the bottom of the aerobic tank, the membrane component is arranged in the MBR tank, the inlet of the MBR water production pump is connected with the MBR tank through a connecting pipeline, the outlet of the MBR water production pump is connected with a first pipeline and a second pipeline, the first pipeline is connected with the denitrification filter tank, the first pipeline is provided with a first valve, the second pipeline is connected with the clean water tank, the second pipeline is provided with a second valve, the denitrification filter tank is connected with the clean water tank, and the setting height of the denitrification filter tank is higher than that of the clean water tank; the sludge reflux pump is arranged in the MBR tank, a third pipeline and a fourth pipeline are connected to the outlet of the sludge reflux pump, the third pipeline is connected with the anoxic tank, a third valve is arranged on the third pipeline, the fourth pipeline is connected with the sludge tank, and a fourth valve is arranged on the fourth pipeline; the chemical feeding assembly is used for adding a carbon source into the anoxic tank and the denitrification filter tank, the chemical feeding assembly is used for adding a phosphorus removing agent into the anoxic tank or the aerobic tank, and the chemical feeding assembly is used for adding a disinfectant into the clean water tank; the chemical feeding assembly, the MBR water production pump, the raw water pump, the sludge reflux pump, the aeration assembly, the liquid level monitoring part, the first valve, the second valve, the third valve and the fourth valve are all connected with the electric control cabinet.

2. The integrated domestic sewage treatment device with enhanced nitrogen removal of claim 1, further comprising a submersible stirrer, wherein the submersible stirrer is arranged at one end of the bottom of the anoxic tank, which is far away from the aerobic tank, and is connected with the electric control cabinet.

3. The integrated domestic sewage treatment device with enhanced nitrogen removal according to claim 1, further comprising a temperature sensor disposed in the anoxic tank, wherein the temperature sensor is connected to the electric control cabinet.

4. The integrated domestic sewage treatment device for enhanced nitrogen removal according to claim 1, further comprising an equipment room, wherein the equipment room is arranged on one side of the MBR tank far away from the aerobic tank, and the electric control cabinet, the dosing assembly, the denitrification filter tank and the MBR water production pump are all arranged in the equipment room.

5. The integrated domestic sewage treatment device with enhanced nitrogen removal according to claim 4, wherein the aeration assembly comprises an aeration disc and a fan, the aeration disc is arranged at the bottom of the aerobic tank, the fan is arranged in the equipment room, the aeration disc is connected with the fan, and the fan is connected with the electric control cabinet.

6. The integrated domestic sewage treatment device for enhanced nitrogen removal according to claim 4, further comprising an MBR backwash water pump, wherein the MBR backwash water pump is arranged in the equipment room, an inlet of the MBR backwash water pump is connected with the clean water tank through a fifth pipeline, an outlet of the MBR backwash water pump is connected with the MBR tank through a sixth pipeline, and the MBR backwash water pump is connected with the electric control cabinet.

7. The integrated domestic sewage treatment device for enhanced nitrogen removal according to claim 4, further comprising a denitrification filter backwash water pump, wherein the denitrification filter backwash water pump is arranged in the equipment room, an inlet of the denitrification filter backwash water pump is connected with the clean water tank through a seventh pipeline, an outlet of the denitrification filter backwash water pump is connected with the denitrification filter through an eighth pipeline, and the denitrification filter backwash water pump is connected with the electric control cabinet.

8. The integrated domestic sewage treatment device with enhanced nitrogen removal according to claim 4, wherein the clean water tank is arranged at the front end of the MBR tank, the clean water tank is positioned between the aerobic tank and the equipment room, the upper part of the clean water tank, which is far away from the MBR tank, is provided with a water outlet, and the sludge tank is arranged at the front end of the adjusting tank.

9. The integrated domestic sewage treatment apparatus for enhanced nitrogen removal according to claim 1, the dosing assembly comprises a carbon source dosing tank, a phosphorus removing agent dosing tank, a disinfectant dosing tank, a first metering pump, a second metering pump, a third metering pump and a fourth metering pump, two ends of the first metering pump are respectively connected with the carbon source dosing tank and the anoxic tank, two ends of the second metering pump are respectively connected with the carbon source dosing tank and the denitrification filter tank, one end of the third metering pump is connected with the phosphorus removing agent dosing tank, the other end of the third metering pump is connected with the anoxic tank or the aerobic tank, and two ends of the fourth metering pump are respectively connected with the disinfectant dosing tank and the clean water tank, and the first metering pump, the second metering pump, the third metering pump and the fourth metering pump are all connected with the electric control cabinet.

10. The integrated domestic sewage treatment device with enhanced nitrogen removal of claim 4, further comprising an emergency water pump, a backup fan and a MBR water production backup pump, wherein the emergency water pump, the backup fan and the MBR water production backup pump are all arranged in the equipment room, and the emergency water pump, the backup fan and the MBR water production backup pump are all connected with the electric control cabinet.