CN215250283U

CN215250283U - Buried domestic sewage treatment device

Info

Publication number: CN215250283U
Application number: CN202121418407.8U
Authority: CN
Inventors: 苏忠瑞; 金建新
Original assignee: Hangzhou Shuirui Electromechanical Equipment Co ltd
Current assignee: Zhejiang Shuirui Environmental Technology Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-12-21
Anticipated expiration: 2031-06-24

Abstract

The utility model provides a bury formula domestic sewage treatment plant, include: the device comprises an adjusting tank, an anoxic reaction tank, an aerobic reaction tank, an MBR (membrane bioreactor) filtering tank, a disinfection tank and a middle water tank which are connected in sequence; sewage enters an anoxic reaction tank after granular sewage is filtered by a regulating tank, macromolecular organic matters are degraded in the anoxic reaction tank and enter an aerobic reaction tank after denitrification, sludge and water in the sewage are separated in an MBR (membrane bioreactor) filter tank after COD (chemical oxygen demand) and BOD (biochemical oxygen demand) indexes are reduced in the aerobic reaction tank, and the separated water enters a disinfection tank for disinfection and then is discharged into a reclaimed water tank. The device is fully buried, and realizes integrated purification treatment of domestic sewage by using a treatment process combining physics, chemistry and biology, so that the treated domestic sewage meets the discharge standard, and the content of nitrogen and phosphorus in the domestic sewage is reduced to prevent water quality pollution.

Description

Buried domestic sewage treatment device

Technical Field

The utility model relates to a water treatment facilities field especially relates to a bury formula domestic sewage treatment plant.

Background

Domestic sewage is waste water discharged in daily life of residents and mainly comes from residential buildings and public buildings, such as toilet and urinal sewage, bathroom sewage, washing sewage, kitchen sewage and the like. The pollutants contained in the domestic sewage are mainly organic matters (such as protein, carbohydrate, fat, urea, ammonia nitrogen and the like) and a large amount of pathogenic microorganisms (such as parasitic ova, enteroinfectious viruses and the like). Organic matters existing in domestic sewage are extremely unstable and easily decomposed to generate offensive odor. Bacteria and pathogens propagate in large quantities by taking organic matters in domestic sewage as nutrition, and can cause epidemic of infectious diseases. Therefore, domestic sewage must be treated before being discharged.

At present, a single domestic sewage treatment process cannot directly realize treatment to obtain domestic sewage meeting the discharge standard, and multiple processes are often needed to treat the domestic sewage. In addition, the treated domestic sewage still contains nutrient elements such as nitrogen, phosphorus and the like, and is discharged into the nature to easily cause water quality pollution.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bury formula domestic sewage treatment device, the device bury formula for whole, utilize the processing technology of physics, chemistry and biological combination to realize integration purification treatment domestic sewage, make the domestic sewage after handling accord with emission standard to reduce the content of nitrogen, phosphorus in the domestic sewage and in order to prevent to arouse water pollution.

In order to solve the technical problem, the utility model provides a following technical scheme:

this bury formula domestic sewage treatment plant includes: the device comprises an adjusting tank, an anoxic reaction tank, an aerobic reaction tank, an MBR (membrane bioreactor) filtering tank, a disinfection tank and a middle water tank which are connected in sequence; sewage enters an anoxic reaction tank after granular sewage is filtered by a regulating tank, macromolecular organic matters are degraded in the anoxic reaction tank and enter an aerobic reaction tank after denitrification, sludge and water in the sewage are separated in an MBR (membrane bioreactor) filter tank after COD (chemical oxygen demand) and BOD (biochemical oxygen demand) indexes are reduced in the aerobic reaction tank, and the separated water enters a disinfection tank for disinfection and then is discharged into a reclaimed water tank.

In some embodiments, a sewage lifting pump is arranged between the regulating tank and the anoxic reaction tank, and the sewage lifting pump lifts the sewage filtered by the regulating tank into the anoxic reaction tank.

In some embodiments, a first sewage backflow device is arranged between the anoxic reaction tank and the aerobic reaction tank, and if the nitro-nitrogen concentration of the sewage in the aerobic reaction tank is higher than an allowable concentration threshold value, the first sewage backflow device flows the sewage back to the anoxic reaction tank for denitrification.

In some embodiments, the adjusting tank is provided with an ultrafine grid which filters small granular dirt, small fibrous substances and hair in the sewage.

In some embodiments, the MBR filter tank is connected with a septic tank, and after sewage passes through the MBR filter tank to separate sludge and water, the separated sludge is discharged into the septic tank. Specifically, a sludge sedimentation tank is arranged between the MBR filter tank and the septic tank, and the separated sludge is discharged into the sludge sedimentation tank. Wherein, be equipped with the mud elevator pump between mud sedimentation tank and the septic tank, the mud elevator pump promotes mud in the septic tank.

In some embodiments, a dephosphorization sedimentation tank is arranged between the disinfection tank and the middle water tank, and the disinfected water is discharged into the middle water tank after being denitrified and dephosphorized by the dephosphorization sedimentation tank.

In some embodiments, the apparatus further comprises a cleaning assembly coupled to the MBR filtration tank, the cleaning assembly comprising: liquid medicine jar and set up the dosing pump on the liquid medicine jar. Specifically, sodium chlorate is filled in the liquid medicine tank.

Compared with the prior art, the utility model discloses beneficial effect down has: the integrated purification treatment of domestic sewage is realized by utilizing a physical, chemical and biological combined treatment process, the domestic sewage is treated by adopting a biodegradation purification technology integrated with MBR filtration power, granular sewage in the sewage is firstly filtered by an adjusting tank, macromolecular organic matters in the filtered sewage are degraded by an anoxic reaction tank and then subjected to denitrification, an aerobic reaction tank is used for oxygenating aerobic bacteria in a large quantity to reduce COD and BOD indexes in the sewage, then sludge and water in the sewage are separated by the MBR, and the separated water is disinfected to make the separated water meet the discharge standard, wherein, a first sewage backflow device is additionally arranged to denitrify and dephosphorize the sewage to prevent water eutrophication pollution.

Drawings

Fig. 1 is a schematic view of a buried domestic sewage treatment apparatus according to some embodiments of the present invention.

In the figure: 10-regulating tank, 20-anoxic reaction tank, 30-aerobic reaction tank, 40-MBR filter tank, 50-disinfection tank, 60-dephosphorization sedimentation tank, 70-middle water tank, 80-sludge sedimentation tank and 90-septic tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1, fig. 1 is a schematic view of a buried domestic sewage treatment apparatus according to some embodiments of the present invention.

As shown in fig. 1, the buried domestic sewage treatment device comprises: the device comprises an adjusting tank 10, an anoxic reaction tank 20, an oxygenation reaction tank 30, an MBR filter tank 40, a disinfection tank 50 and a reclaimed water tank 70 which are connected in sequence; the sewage enters the anoxic reaction tank 20 after granular sewage is filtered by the regulating tank 10, the sewage enters the oxygenation reaction tank 30 after macromolecular organic matters are degraded and denitrified in the anoxic reaction tank 20, the sewage enters the MBR filtering tank 40 after COD and BOD indexes are reduced by the oxygenation reaction tank 30 to separate sludge and water in the sewage, and the separated water enters the disinfection tank 50 and is discharged into the reclaimed water tank 70 after being disinfected.

Specifically, the conditioning tank 10 is used to filter particulate dirt in the sewage, and in some embodiments, the conditioning tank 10 is provided with an ultrafine grid and a hair collector to filter small particulate dirt, small fibrous substances, hair, and the like in the sewage. And then the filtered sewage is lifted from the adjusting tank 10 to the anoxic reaction tank 20. In some embodiments, the conditioning tank 10 is disposed below the anoxic reaction tank 20, both at locations at different depths underground. Therefore, in some embodiments, a sewage lifting pump is disposed between the adjusting tank 10 and the anoxic reaction tank 20, and the sewage lifting pump lifts the sewage filtered by the adjusting tank 10 into the anoxic reaction tank 20.

In the anoxic reaction tank 20, macromolecular organic matters in the filtered sewage are degraded and subjected to denitrification, and in the oxygenation reaction tank 30, aerobic bacteria are oxygenated in large quantities to reduce COD and BOD indexes in the sewage. If the concentration of the nitro-nitrogen in the wastewater in the oxygenation reaction tank 30 is higher than the allowable concentration threshold, in some embodiments, a first wastewater backflow device is disposed between the anoxic reaction tank 20 and the oxygenation reaction tank 30, and the first wastewater backflow device flows the wastewater back into the anoxic reaction tank 20 for denitrification again until the concentration of the nitro-nitrogen in the wastewater in the oxygenation reaction tank 30 is not higher than the allowable concentration threshold.

The sewage is then discharged into the MBR filtration tank 40 to separate sludge and water from the sewage, and in some embodiments, the MBR filtration tank 40 is connected to the septic tank 90, and the sewage is separated into sludge and water by the MBR filtration tank 40, and the separated sludge is discharged into the septic tank 90. Specifically, a sludge sedimentation tank is arranged between the MBR filter tank 40 and the septic tank 90, the separated sludge is discharged into the sludge sedimentation tank, and the sludge is discharged into the septic tank 90 after being precipitated. Wherein, be equipped with the mud elevator pump between sludge sedimentation tank and septic tank 90, the mud elevator pump promotes mud in septic tank 90.

The separated water is discharged into the sterilizing tank 50 to be sterilized to meet the discharge standard. In particular, in order to prevent the discharged water from causing eutrophication of water quality in the environment, in some embodiments, a dephosphorization sedimentation tank 80 is disposed between the disinfection tank 50 and the middle water tank 70, and the disinfected water is discharged into the middle water tank 70 after being dephosphorized by the dephosphorization sedimentation tank 80. And, in some embodiments, a second sewage backflow device is provided between the reclaimed water tank 70 and the dephosphorization sedimentation tank 80, and if the phosphorus content in the reclaimed water tank 70 exceeds the phosphorus content of the domestic sewage allowed to be discharged, the sewage in the reclaimed water tank 70 is treated again by the second sewage backflow device until the phosphorus content in the sewage in the reclaimed water tank 70 does not exceed the phosphorus content of the domestic sewage allowed to be discharged.

In particular, in some embodiments, the apparatus further comprises a cleaning assembly coupled to the MBR filtration tank 40, the cleaning assembly comprising: the device comprises a liquid medicine tank and a dosing pump arranged on the liquid medicine tank, wherein sodium chlorate is filled in the liquid medicine tank, and the MBR is cleaned by the sodium chlorate or similar agents, so that the flux of the MBR can be better recovered.

The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.

Claims

1. Bury formula domestic sewage treatment plant, its characterized in that includes: the device comprises an adjusting tank (10), an anoxic reaction tank (20), an oxygenation reaction tank (30), an MBR (membrane bioreactor) filtering tank (40), a disinfection tank (50) and a middle water tank (70) which are connected in sequence; the sewage enters an anoxic reaction tank (20) after granular sewage is filtered by a regulating tank (10), macromolecular organic matters are degraded in the anoxic reaction tank (20), the sewage enters an oxygenation reaction tank (30) after denitrification, the COD and BOD indexes are reduced by the oxygenation reaction tank (30), the sewage enters an MBR (membrane bioreactor) filtering tank (40) to separate sludge and water in the sewage, and the separated water enters a disinfection tank (50) to be disinfected and then is discharged into a reclaimed water tank (70).

2. The buried domestic sewage treatment device according to claim 1, wherein a sewage lift pump is provided between the regulating reservoir (10) and the anoxic reaction reservoir (20), and the sewage lift pump lifts the sewage filtered by the regulating reservoir (10) into the anoxic reaction reservoir (20).

3. The buried domestic sewage treatment device according to claim 1, wherein a first sewage backflow device is arranged between the anoxic reaction tank (20) and the oxygenation reaction tank (30), and if the nitro-nitrogen concentration of the sewage in the oxygenation reaction tank (30) is higher than an allowable concentration threshold, the first sewage backflow device flows the sewage back into the anoxic reaction tank (20) for denitrification again.

4. The buried domestic sewage treatment device according to claim 1, wherein the regulating reservoir (10) is provided with an ultrafine grid which filters small granular dirt, small fibrous substances and hair in the sewage.

5. The buried domestic sewage treatment device according to claim 1, wherein the MBR filter tank (40) is connected with the septic tank (90), and after sewage passes through the MBR filter tank (40) to separate sludge and water, the separated sludge is discharged into the septic tank (90).

6. The buried domestic sewage treatment device according to claim 5, wherein a sludge sedimentation tank is provided between the MBR filter tank (40) and the septic tank (90), the separated sludge is discharged into the sludge sedimentation tank, and the sludge is discharged into the septic tank (90) after being settled.

7. The buried domestic sewage treatment device according to claim 6, wherein a sludge lift pump is provided between the sludge settling tank and the septic tank (90), and the sludge lift pump lifts sludge into the septic tank (90).

8. The buried domestic sewage treatment device according to claim 1, wherein a phosphorus removal sedimentation tank (80) is provided between the disinfection tank (50) and the middle water tank (70), and the disinfected water is discharged into the middle water tank (70) after being phosphorus removed by the phosphorus removal sedimentation tank (80).

9. The buried domestic sewage treatment apparatus according to claim 1, further comprising a cleaning module connected to the MBR filtering tank (40), wherein the cleaning module comprises: liquid medicine jar and set up the dosing pump on the liquid medicine jar.

10. The buried domestic sewage treatment apparatus according to claim 9, wherein the liquid chemical tank contains sodium chlorate.