CN211644763U

CN211644763U - Multifunctional bypass sludge relay tank

Info

Publication number: CN211644763U
Application number: CN201922461329.9U
Authority: CN
Inventors: 徐晓茵; 贾仁勇; 赵浩然; 王海阳
Original assignee: Shanghai Kungong Environment Technology Co ltd
Current assignee: Shanghai Kungong Environment Technology Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-10-09
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a multifunctional bypass sludge relay tank, which comprises a stirring area and a switching area; the stirring area is provided with a water inlet pipe and a stirring device; the stirring area obtains rain sewage and sewage mixed overflow sewage through a water inlet pipe; a water outlet is arranged between the stirring area and the switching area, and the stirring area is communicated with the switching area by opening or closing the water outlet; the switching area is provided with a stirring device and a plurality of membrane disc type microporous aerators; the plurality of diaphragm disc type microporous aerators are communicated through an air distribution pipeline and are connected with an air supply device through the air distribution pipeline; the switching area is connected with the water outlet pipe, and the switching area discharges the treated water through the water outlet pipe. The utility model discloses a special design has the function of mud storage relay, recovery VFA, bypass backward flow mud denitrification concurrently, improves the treatment load of whole factory, reduces and avoids biochemical pond plus carbon source even, practices thrift the working costs.

Description

Multifunctional bypass sludge relay tank

Technical Field

The utility model relates to a water treatment technical field, in particular to multi-functional bypass mud relay pond.

Background

With the development of economic society, water resources are more and more precious, and the requirements of citizens on improving urban drainage, improving the water quality of river channels and the effective utilization of water resources and improving the living environment are higher and higher.

The urban rain sewage mixed overflow sewage contains a large amount of untreated urban sewage, and is one of main pollution sources of water in China. The confluence overflow sewage is mainly composed of domestic sewage, commercial sewage, industrial sewage and road surface rainwater runoff, and contains a large amount of floating and suspended substances and toxic pollutants.

On one hand, the urban rain sewage and sewage mixed overflow sewage causes a large amount of sewage to flow into a river water body, and causes continuous deterioration of a water environment; on the other hand, a large amount of rainwater enters the sewage pipe network in rainy days, so that the operating pressure of the sewage pipe network and a sewage treatment plant is increased.

Sewage treatment plants are mostly operated at load rates above 80% in daily operation. During rainy season, the rain and sewage mixed water volume actually entering a sewage treatment plant is far higher than the daily water inflow due to a large amount of rain water, and particularly, in a terminal sewage treatment plant of a city combined sewage system, a terminal sewage treatment plant of a collection system with serious pipeline rain and sewage misconnection or an organic industrial wastewater treatment facility with large water quality and water volume fluctuation, the whole activated sludge system is always in an overload operation state, and the whole activated sludge system is impacted, so that the normal and stable operation cannot be ensured.

Therefore, how to solve the problem that the amount of the rain and sewage mixed water in the sewage treatment plant far exceeds the daily water inflow during the rainy season becomes a technical problem which needs to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defect of prior art, the utility model provides a multi-functional bypass mud relay pond, the purpose of realization is to improve the whole factory and handles the load, reduces and avoids biochemical pond plus carbon source even, practices thrift the working costs.

In order to achieve the above object, the utility model discloses a multi-functional bypass mud relay pond, including stirring region and switching region.

Wherein the stirring area is provided with a water inlet pipe and a stirring device; the stirring area obtains rain sewage and sewage mixed overflow sewage through the water inlet pipe;

a water outlet is arranged between the stirring area and the switching area, and the stirring area is communicated with the switching area by opening or closing the water outlet;

the switching area is provided with the stirring device and a plurality of membrane disc type microporous aerators;

the plurality of membrane disc type microporous aerators are communicated through an air distribution pipeline and are connected with an air supply device through the air distribution pipeline;

the switching area is connected with a water outlet pipe, and the switching area discharges the treated water through the water outlet pipe.

Preferably, the stirring area and the switching area are both provided with vent pipes.

Preferably, the stirring area and the switching area are both provided with at least two stirring devices.

Preferably, when the load is low in flow rate for a long period, the operation is carried out in an aerobic tank operation mode;

and the DO of the switching area is maintained to be 0.4-0.6 mg/L, and when the sludge is hydrolyzed to generate VFA, the VFA flows back to the anaerobic tank to supply a carbon source to the main biochemical tank.

More preferably, the DO is maintained at 0.5mg/L in the handover region.

The utility model has the advantages that:

the utility model discloses a structural design has the function of mud storage relay, recovery VFA, bypass backward flow mud denitrification concurrently, improves the treatment load of whole factory, reduces and avoids biochemical pond plus carbon source even, practices thrift the working costs.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Drawings

Fig. 1 shows a schematic structural diagram of an embodiment of the present invention.

Detailed Description

Examples

As shown in fig. 1, the multifunctional bypass sludge relay tank comprises a stirring area 2 and a switching area 6.

Wherein, the stirring area 2 is provided with a water inlet pipe 1 and a stirring device 3; the stirring area 2 obtains rain sewage and sewage mixed overflow sewage through the water inlet pipe 1;

a water outlet 5 is arranged between the stirring area 2 and the switching area 6, and the stirring area 2 and the switching area 6 are communicated by the water outlet 5 in an opening or closing way;

the switching area 6 is provided with a stirring device 3 and a plurality of membrane disc type microporous aerators 7;

the plurality of membrane disc type microporous aerators 7 are communicated through air distribution pipelines and are connected with an air supply device through the air distribution pipelines;

the switching area 6 is connected with a water outlet pipe 8, and the switching area 6 discharges the treated water through the water outlet pipe 8.

The working principle of the utility model is as follows:

the design of the bypass sludge relay tank is suitable for three working conditions of sludge hydrolysis acidification, sludge relay storage and external reflux sludge nitrate denitrification, when the bypass sludge relay tank is in a long-period low-flow load, the sludge is hydrolyzed to generate VFA, and the VFA is supplied for the main biochemical tank to supplement a carbon source; before the long-period high-flow load comes, storing the activated sludge to meet the arrival of the peak flow; and in the enhanced denitrification mode, the denitrification of the external reflux sludge path is enhanced.

In certain embodiments, both the agitation zone 2 and the switching zone 6 are provided with a vent 4.

In certain embodiments, both the stirring zone 2 and the switching zone 6 are provided with a minimum of two stirring devices 3.

In some embodiments, the aerobic tank is operated in an aerobic tank operation mode during long-period low-flow load;

the DO of the switching area 6 is maintained to be 0.4-0.6 mg/L, and when the sludge is hydrolyzed to generate VFA, the VFA flows back to the anaerobic tank to supply a carbon source to the main biochemical tank.

Optimally, the DO is maintained at 0.5mg/L in the handover area 6.

Before the long-period high-flow load comes, the utility model discloses in store activated sludge and flow back to biochemical pond anaerobism section, meet the arrival of peak flow.

When peak flow load, as required, the utility model discloses switch to strengthening the denitrogenation mode, switch over regional 6 according to the operation of oxygen deficiency pond operational mode, close all diaphragm disk micropore aerators 7, start agitating unit 3, bypass mud relay pond is introduced to sewage plant 5-10%'s inflow, the utility model discloses maintain the stirring the utility model discloses take place the biochemical process of external reflux mud road denitrification, bypass mud mixed liquid flows back to main road biochemical pond oxygen deficiency section.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The multifunctional bypass sludge relay tank comprises a stirring area (2) and a switching area (6); the method is characterized in that:

the stirring area (2) is provided with a water inlet pipe (1) and a stirring device (3); the stirring area (2) obtains rain and sewage mixed overflow sewage through the water inlet pipe (1);

a water outlet (5) is arranged between the stirring area (2) and the switching area (6), and the stirring area (2) and the switching area (6) are communicated by the water outlet (5) in an opening or closing way;

the switching area (6) is provided with the stirring device (3) and a plurality of membrane disc type microporous aerators (7);

the plurality of membrane disc type microporous aerators (7) are communicated through an air distribution pipeline and are connected with an air supply device through the air distribution pipeline;

the switching area (6) is connected with a water outlet pipe (8), and the switching area (6) discharges the treated water through the water outlet pipe (8).

2. The multifunctional bypass sludge relay tank according to claim 1 characterized in that the agitation zone (2) and the switching zone (6) are provided with a blow down pipe (4).

3. The multifunctional bypass sludge relay tank according to claim 1 characterized in that said agitation area (2) and said switching area (6) are each provided with at least two of said agitation devices (3).

4. The multifunctional bypass sludge relay tank of claim 1 wherein during long periods of low flow load, operation is in aerobic tank mode of operation;

the DO of the switching area (6) is maintained to be 0.4-0.6 mg/L, and when the sludge is hydrolyzed to generate VFA, the VFA flows back to the anaerobic tank to supply a carbon source to the main biochemical tank.

5. The multifunctional bypass sludge relay tank of claim 4 wherein the switch area (6) maintains DO at 0.5 mg/L.