CN215627417U

CN215627417U - Multistage coupling sewage treatment system

Info

Publication number: CN215627417U
Application number: CN202120990976.3U
Authority: CN
Inventors: 李献芳
Original assignee: Wuhan Lvmingli Huanneng Co ltd
Current assignee: Wuhan Lvmingli Huanneng Co ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2022-01-25
Anticipated expiration: 2031-05-10

Abstract

The utility model discloses a multistage coupling sewage treatment system which comprises a pretreatment unit, a secondary treatment unit, an advanced treatment unit and a disinfection unit which are sequentially communicated with one another, wherein the pretreatment unit comprises a sedimentation tank, a rectangular separation net is fixedly arranged above the inner part of the sedimentation tank, a water inlet is formed in the rectangular separation net in a communication mode, the secondary treatment unit comprises an anaerobic tank, an anoxic tank and an aerobic tank which are sequentially communicated with one another, the anaerobic tank is communicated with the sedimentation tank, the aerobic tank is communicated with the advanced treatment unit, a plurality of nozzles are uniformly and fixedly arranged in the aerobic tank at intervals, the nozzles are communicated and provided with aeration pipes, the aeration pipes are communicated and provided with aeration fans, the advanced treatment unit comprises a flocculation air flotation tank communicated with the aerobic tank, and the disinfection unit is communicated and provided with a water outlet. The utility model realizes the multi-stage coupling integrated treatment of sewage treatment, reduces the construction structures of sewage treatment plants, ensures more stable treatment effect and ensures more water outlet effect.

Description

Multistage coupling sewage treatment system

Technical Field

The utility model relates to the technical field of sludge sewage treatment, in particular to a multistage coupling sewage treatment system.

Background

With the increasing environmental governance in the country in recent years, the discharge standards of sewage treatment in various regions are more strict, so that even in small-scale sewage treatment plants, each treatment unit needs to be complete, otherwise, the treatment requirements cannot be met.

According to the research on the construction and operation conditions of domestic sewage treatment plants and the technical input and use conditions of sewage treatment processes, the existing sewage treatment processes are more, the adopted purification treatment systems are more complex and the related sewage treatment equipment is more to reach the first-level A discharge standard. In the actual construction and operation process, the more the treatment structures of the sewage treatment plant are constructed, the more the construction cost and the operation cost are correspondingly increased, particularly, the sewage treatment facilities of small-scale scenic spots, service areas, residential quarters and the like which can not be connected to the municipal main pipeline are provided, and the more the construction units are provided by the high-standard discharge requirement, so that the construction, operation and maintenance difficulty is higher, and the cost is higher.

SUMMERY OF THE UTILITY MODEL

Based on the above description, the present invention provides a multi-stage coupling sewage treatment system to solve the problems in the background art.

The technical scheme for solving the technical problems is as follows: the utility model provides a multistage coupling sewage treatment system, is including the pretreatment unit, secondary treatment unit, the advanced treatment unit and the disinfection unit that communicate each other in proper order and set up, the pretreatment unit includes the sedimentation tank, sedimentation tank inside top fixed mounting has the rectangle to separate the net, the rectangle separates net department intercommunication and is provided with the water inlet, the secondary treatment unit is including anaerobic tank, oxygen deficiency pond and the aerobic tank that is linked together the setting in proper order, the anaerobic tank with the sedimentation tank is linked together, the aerobic tank with the advanced treatment unit is linked together, and the even fixed mounting in aerobic tank inside interval has a plurality of nozzles, the nozzle intercommunication is provided with the aeration pipe, the aeration pipe intercommunication is provided with the aeration fan, the advanced treatment unit include with the flocculation air supporting pond that the aerobic tank is linked together, the disinfection unit intercommunication is provided with the delivery port.

On the basis of the technical scheme, the utility model can be further improved as follows.

Furthermore, biological fillers are filled in the anaerobic tank, the anoxic tank and the aerobic tank.

According to the utility model, a partition board is fixedly arranged in the flocculation air flotation tank, the flocculation air flotation tank is divided into a flocculation area and an air flotation area by the partition board, a flocculating agent is placed in the flocculation area, an air flotation pipeline is communicated with the air flotation area, and a dissolved air pump is communicated with the air flotation pipeline.

Furthermore, the height of the partition board accounts for 1/4-1/2 of the height of the flocculation flotation tank.

In this experiment is novel, good oxygen pond with it is provided with well pond still to communicate respectively between the flocculation air supporting pond, the inside bottom fixed mounting of well pond has the suction pump, the suction pump intercommunication is provided with the drinking-water pipe, the drinking-water pipe other end stretches into in the flocculation air supporting pond.

Furthermore, the bottom of the reclaimed water tank is communicated with the anaerobic tank through a first sludge pump.

As a further improvement of the utility model, a water storage tank is also communicated between the advanced treatment unit and the disinfection unit.

As a further improvement of the utility model, the bottom of the settling zone is also communicated with a second sludge pump, an outlet pipeline of the second sludge pump is communicated with a sludge dewatering machine, and a water outlet of the sludge dewatering machine is communicated with the water inlet.

Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:

according to the utility model, through the integrated coupling design of the pretreatment unit, the secondary treatment unit, the advanced treatment unit and the disinfection unit, the construction structures of the sewage treatment plant are reduced, the effluent quality of the sewage treatment plant is ensured, and the device realizes the multi-stage coupling integrated treatment of the sewage treatment through strict centralized partition operation, so that the treatment effect is more stable, and the effluent effect is more guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of a multi-stage coupling sewage treatment system provided in embodiment 1 of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a schematic structural view of example 2 of the present invention;

fig. 4 is a schematic structural diagram of embodiment 3 of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a sedimentation tank; 2. separating the net; 3. a water inlet; 4. an anaerobic tank; 5. an anoxic tank; 6. an aerobic tank; 7. a nozzle; 8. an aeration pipe; 9. a flocculation floatation tank; 10. a sterilizing unit; 11. a water outlet; 12. a partition plate; 13. a flocculation zone; 14. an air flotation zone; 15. a vapor float pipeline; 16. a middle water pool; 17. a water pump; 18. a water pumping pipe; 19. a reservoir; 20. a first sludge pump; 21. a sludge dewatering machine; 22. a second sludge pump.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Example 1

Fig. 1, fig. 2 shows a multistage coupling sewage treatment system, including the pretreatment unit that communicates each other in proper order and set up, the secondary treatment unit, advanced treatment unit and disinfection unit, wherein, pretreatment unit includes sedimentation tank 1, sedimentation tank 1 inside top fixed mounting has rectangle spacer screen 2, rectangle spacer screen 2 department intercommunication is provided with water inlet 3, sewage from water inlet 3 at first enter into inside spacer screen 2, can preferentially remove the tiny dross in the sewage through spacer screen 2, then inside the secondary treatment unit, wherein, the secondary treatment unit is including the anaerobism pond 4 that communicates the setting in proper order, oxygen deficiency pond 5 and good oxygen pond 6, and in anaerobism pond 4, oxygen deficiency pond 5 and good oxygen pond 6 inside all fills and is provided with the biological packing, can throttle the suspended solid in the sewage through the biological packing. The anaerobic tank 4 is communicated with the sedimentation tank 1, the aerobic tank 6 is communicated with the advanced treatment unit, a plurality of nozzles 7 are uniformly and fixedly installed in the aerobic tank 6 at intervals, the nozzles 7 are communicated and provided with aeration pipes 8, the aeration pipes 8 are communicated and provided with aeration fans, the advanced treatment unit comprises a flocculation air flotation tank 9 communicated with the aerobic tank 6, and a water outlet 11 is communicated and provided with a disinfection unit 10.

The utility model removes fine scum in sewage through the artificial separation net 2, then enters the sedimentation zone 1 to remove fine inorganic particles in the sewage, the effluent of the sedimentation zone 1 enters the secondary treatment unit to perform anaerobic, anoxic and aerobic alternate operation to perform denitrification and dephosphorization treatment, remove organic pollutants such as COD, BOD, TN, TP and the like in the sewage, and discharge the organic pollutants through the discharge of residual sludge; and the effluent of the secondary treatment unit enters an advanced treatment unit for flocculation and air flotation reaction, and pollutants such as TP, SS and the like in water are further removed, so that the effluent reaches a first-class A standard.

In the utility model, a partition plate 12 is fixedly arranged in a flocculation air flotation tank 9, the flocculation air flotation tank 11 is divided into a flocculation area 13 and an air flotation area 14 by the partition plate 12, wherein a flocculating agent is placed in the flocculation area 13, the type of the flocculating agent is selected according to actual requirements, an air flotation pipeline 15 is communicated in the air flotation area 14, and a dissolved air pump is communicated in the air flotation pipeline 15. Furthermore, the height of the partition board 12 accounts for 1/4-1/2 of the height of the flocculation flotation tank 9. The water entering from the secondary treatment unit firstly enters the flocculation area 13 under the difficult blocking effect of the partition plate 12, is coagulated into larger alum flocs through the flocculation effect of the flocculating agent, and after the alum flocs exceed the height of the partition plate 12, part of the alum flocs enter the air floatation area 14, then the switch valve on the dissolved air pump and the air floatation pipeline 15 is opened, and the alum flocs are removed through air floatation, so that the air floatation separation efficiency is improved.

In the experiment, a reclaimed water tank (a water tank for containing water between sewage and purified water) 16 is further respectively communicated between the aerobic tank 6 and the flocculation flotation tank 9, a water suction pump 17 is fixedly arranged at the bottom end inside the reclaimed water tank 16, the water suction pump 17 is communicated with a water suction pipe 18, and the other end of the water suction pipe 18 extends into the flocculation flotation tank 9. The water treated by the secondary treatment unit is lifted to enter the advanced treatment unit through the reclaimed water tank 16, and the water quantity of the water treated by the secondary treatment unit entering the advanced treatment unit can be controlled, so that the advanced treatment rate is controlled, and the advanced treatment effect is improved.

Example 2

The difference is that the bottom of the middle water tank 16 is communicated with the anaerobic tank 4 through the first sludge pump 20, the microorganism content in the anaerobic tank 4 can be supplemented, the reaction rate is improved, the water storage tank 19 is communicated and arranged between the advanced treatment unit and the disinfection unit 10, the amount of water in the water storage tank 10 entering the disinfection unit 10 can be controlled by opening or closing the switch of the water storage tank 19, the disinfection effect and the disinfection rate are controlled, and the sewage treatment effect is improved.

Wherein, disinfection unit 10 includes the disinfection pond, prevents disinfectant liquid according to actual demand in the disinfection pond, like hypochlorous acid disinfectant, chlorine disinfectant etc..

Example 3

Basically, the difference from the embodiment 2 is that: the bottom of the settling zone 1 is also communicated with a second sludge pump 22, an outlet pipeline of the second sludge pump 22 is communicated with a sludge dewatering machine 21, and a water outlet of the sludge dewatering machine 21 is communicated with the water inlet 3. After the precipitated sludge impurities and the like are treated by the sludge dewatering machine 21, the sludge and the liquid in the sewage are separated, the liquid enters the water inlet 3 again, and the subsequent purification treatment is performed again, so that the water resource waste can be effectively prevented, and the dry sludge cake is transported outside for treatment, so that the sewage and the wastewater are treated efficiently and economically.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a multistage coupling sewage treatment system which characterized in that: including the pretreatment unit, secondary treatment unit, advanced treatment unit and the disinfection unit that communicate the setting each other in proper order, the pretreatment unit includes the sedimentation tank, the inside top fixed mounting of sedimentation tank has the rectangle to separate the net, the rectangle separates net department intercommunication and is provided with the water inlet, the secondary treatment unit is including anaerobic tank, oxygen deficiency pond and the aerobic tank that is linked together the setting in proper order, the anaerobic tank with the sedimentation tank is linked together, the aerobic tank with advanced treatment unit is linked together, and the even fixed mounting in aerobic tank internal interval has a plurality of nozzles, the nozzle intercommunication is provided with the aeration pipe, the aeration pipe intercommunication is provided with the aeration fan, advanced treatment unit include with the flocculation air supporting pond that the aerobic tank is linked together, the disinfection unit intercommunication is provided with the delivery port.

2. The multi-stage coupled wastewater treatment system of claim 1, wherein: and biological fillers are filled in the anaerobic tank, the anoxic tank and the aerobic tank.

3. The multi-stage coupled wastewater treatment system of claim 1, wherein: the flocculation flotation tank is internally and fixedly provided with a partition board, the partition board divides the flocculation flotation tank into a flocculation area and an air flotation area, a flocculating agent is placed in the flocculation area, an air flotation area is internally communicated with an air flotation pipeline, and the air flotation pipeline is communicated with an air dissolving pump.

4. The multi-stage coupled wastewater treatment system of claim 3, wherein: the height of the partition board accounts for 1/4-1/2 of the height of the flocculation flotation tank.

5. The multi-stage coupled wastewater treatment system of claim 1, wherein: the aerobic tank with it is provided with well pond still to communicate respectively between the flocculation air supporting pond, the inside bottom fixed mounting of well pond has the suction pump, the suction pump intercommunication is provided with the drinking-water pipe, the drinking-water pipe other end stretches into in the flocculation air supporting pond.

6. The multi-stage coupled wastewater treatment system of claim 5, wherein: the bottom of the middle water tank is communicated with the anaerobic tank through a first sludge pump.

7. The multi-stage coupled wastewater treatment system of claim 1, wherein: and a reservoir is also communicated between the advanced treatment unit and the disinfection unit.

8. The multi-stage coupled wastewater treatment system of claim 1, wherein: the bottom of the settling zone is also communicated with a second sludge pump, an outlet pipeline of the second sludge pump is communicated with a sludge dewatering machine, and a water outlet of the sludge dewatering machine is communicated with the water inlet.