CN218539427U

CN218539427U - Strengthened A/O process sewage treatment system

Info

Publication number: CN218539427U
Application number: CN202223066840.7U
Authority: CN
Inventors: 李友臣; 何庆生; 范景福; 李丽娜; 肖向群; 孙新乐
Original assignee: China Petroleum and Chemical Corp; Sinopec Engineering Group Co Ltd
Current assignee: China Petroleum and Chemical Corp; Sinopec Engineering Group Co Ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-02-28
Anticipated expiration: 2032-11-18

Abstract

The utility model discloses a strengthening A/O technology sewage treatment system, which belongs to the technical field of sewage treatment. The system comprises an anoxic tank, an aerobic tank, a sedimentation tank and a cyclone separator; the anaerobic tank is communicated with the aerobic tank through a pipeline, the aerobic tank is communicated with the sedimentation tank through a pipeline, and the bottom of the sedimentation tank is communicated with the bottom of the anaerobic tank through a cyclone separator through a pipeline. The utility model discloses an add biofilm carrier in oxygen deficiency pond, good oxygen pond, the load has the functional microorganism of high-efficient biochemical effect, reinforces mass transfer efficiency among the biochemical process to strengthen the microbial activity in the backward flow mud through the whirl device, and throw functional microorganism fungus liquid in the backward flow mud, further promote biochemical reaction rate and efficiency, thereby reach the purpose of reinforceing the AO technology, make the play water can stabilize up to standard.

Description

Enhanced A/O process sewage treatment system

Technical Field

The utility model belongs to the technical field of sewage treatment, concretely relates to reinforce AO technology sewage treatment system.

Background

In recent years, with the improvement of national environmental standards, the discharge index of sewage treatment plants is further improved, and the original A/O treatment process has the defects of low treatment efficiency, poor treatment effect, poor water impact resistance and the like, and is often difficult to meet the discharge requirement. Among them, COD and total nitrogen are important discharge standards, and the difficulty in treatment and high cost are difficult to solve in sewage treatment plants.

In the prior art, more researches and reports are provided for sewage treatment, and most of the researches and reports are focused on the combination of aerobic and anaerobic technologies; wherein, an activated sludge method is mostly adopted in the aerobic tank; however, if the sludge after use is not treated, the activity of the sludge is lowered, and the efficiency of sewage treatment is insufficient.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a be not enough to prior art exists, the utility model aims to an strengthen AO technology sewage treatment system, through throw biological filler in the oxygen deficiency pond, good oxygen pond, the load has the function microorganism of high-efficient biochemical effect, strengthen biochemical in-process mass transfer efficiency, and strengthen among the backward flow mud microbial activity through whirl device, and throw functional microbial liquid in the backward flow mud, further promote biochemical reaction rate and efficiency, thereby reach the purpose of strengthening the AO technology, make the play water can be stable up to standard.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a sewage treatment system for an enhanced A/O process comprises an anoxic tank, an aerobic tank, a sedimentation tank and a cyclone separator; the anaerobic tank is communicated with the aerobic tank through a pipeline, the aerobic tank is communicated with the sedimentation tank through a pipeline, and the bottom of the sedimentation tank is communicated with the bottom of the anaerobic tank through a cyclone separator through a pipeline.

As the optimized technical proposal of the utility model, the anoxic tank is filled with anoxic tank biological carrier filler.

As the preferable technical proposal of the utility model, the biological carrier filler of the anoxic tank is the polyurethane filler.

As the preferable technical proposal of the utility model, the filling rate of the biological carrier filler of the anoxic pond is 15 to 30 percent.

As the optimized technical proposal of the utility model, the aerobic tank is filled with the biological carrier filler of the aerobic tank.

As the preferable technical proposal of the utility model, the biological carrier filler of the aerobic tank is MBBR filler.

As the preferable technical proposal of the utility model, the filling rate of the biological carrier filler of the aerobic tank is 15 to 30 percent.

As the preferable technical proposal of the utility model, a microporous aerator is also arranged in the aerobic tank.

As the optimized technical proposal of the utility model, the aerobic tank also reflows part of the nitrified liquid into the anoxic tank through the pipeline.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) The utility model provides a sewage treatment system all forms a gas-liquid-solid three-phase high-efficient mass transfer region inside oxygen deficiency pond and good oxygen pond, and mass transfer rate is fast, and reaction efficiency is high for biochemical reaction goes on fast.

(2) The utility model provides a sewage treatment system loads the microorganism through biological carrier in oxygen deficiency pond and good oxygen pond to throw and add functional microorganism, form the biomembrane on the carrier surface, increased the area of contact of pollutant in microorganism and the sewage, show improvement reaction efficiency.

(3) The utility model provides a sewage treatment system promotes activated sludge's activity through the whirl, improves the pollutant and gets rid of efficiency.

(4) The utility model provides a sewage treatment system, the treatment effeciency is high, and total nitrogen desorption ability is strong, and water conservancy dwell time is short, and water impact resistance ability is strong.

Drawings

FIG. 1 is a schematic structural view of a sewage treatment system provided by an embodiment of the present invention;

FIG. 2 is a schematic structural view of a filling material for an anoxic tank in a sewage treatment system according to an embodiment of the present invention;

fig. 3 is a schematic structural view of the aerobic tank filling filler in the sewage treatment system provided by the embodiment of the utility model.

Wherein, 1, an anoxic pond; 2. biological carrier filler of the anoxic pond; 3. an aerobic tank; 4. biological carrier filler of the aerobic tank; 5. a sedimentation tank; 6. a cyclone separator.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely below with reference to 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 without creative efforts all belong to the protection scope of the present invention.

Example 1

Referring to fig. 1 to 3, an enhanced a/O process sewage treatment system includes an anoxic tank 1, an aerobic tank 3, a sedimentation tank 5, and a cyclone separator 6; the anaerobic tank 1 is communicated with the aerobic tank 3 through a pipeline, the aerobic tank 3 is communicated with the sedimentation tank 5 through a pipeline, and the bottom of the sedimentation tank 5 is communicated with the bottom of the anaerobic tank 1 through a cyclone separator 6 through a pipeline.

In the technical scheme, the sewage to be treated firstly enters the anoxic tank 1, the treated sewage enters the aerobic tank 3 and then enters the sedimentation tank 5 for sludge sedimentation, and the treated sewage obtained by sedimentation in the sedimentation tank 5 is sent to the next process for treatment; the sludge obtained at the bottom of the sedimentation tank flows back to the anoxic tank 1 after the action of the cyclone separator 6; part of the nitrified liquid in the aerobic tank 3 flows back to the anoxic tank 1.

As a further preferable technical solution of this embodiment, the aerobic tank 3 is further provided with a microporous aerator, so that the generated bubbles have small particle size, the contact area between the bubbles and the sewage is large, and the oxygen utilization rate is high. It is understood that the micro-porous aerator is a well-established technology, and the structure or model thereof is not specifically limited in this embodiment, so as to be realized by those skilled in the art.

As a further preferable technical solution of this embodiment, the anoxic tank 1 is filled with an anoxic tank biological carrier filler 2; the anoxic pond biological carrier filler 2 is preferably a polyurethane filler, the filler is also beneficial to denitrifying microorganisms to form a biological membrane on the filler, and further can form the enrichment of functional microorganisms, so that a biological system in the anoxic pond is changed from a single sludge system to a sludge-membrane mixing system, the denitrification reaction rate and efficiency can be improved, the anoxic pond treatment efficiency is improved, and the water impact resistance is improved. The dosage of the biological carrier filler 2 in the anoxic tank 1 is determined according to the volume of the reactor, and the filler adding rate is 15-30%, preferably 20% of the volume of the reactor under normal conditions.

As a further preferred technical solution of this embodiment, the aerobic tank 3 is filled with an aerobic tank biological carrier filler 4; the aerobic tank biological carrier filler 4 is preferably MBBR filler which is made of polyethylene, and the filler can further cut bubbles in the aerobic tank, so that the bubble particle size is reduced, and the oxygen utilization rate is improved. The addition of the biological carrier filler in the aerobic tank is beneficial to aerobic microorganisms to form a biological film by hanging a film on the biological carrier filler, and further functional microorganism enrichment can be formed, so that a biological system in the aerobic tank is changed from a single sludge system into a sludge-film mixing system, the rate and efficiency of organic matter degradation and nitration reaction can be improved, the treatment efficiency of the aerobic tank is improved, and the water impact resistance is improved; the dosage of the biological carrier filler 4 in the aerobic tank 3 is determined according to the volume of the reactor, and the filler addition rate is 15-30%, preferably 20% of the volume of the reactor under normal conditions.

In the embodiment, the sludge backflow firstly passes through the cyclone separator 6 to strengthen the sludge and improve the activity of the sludge; the cyclone separator 6 can desorb the adsorbed substances on the surface of the sludge flocs and the microbial metabolites, so that the contact area of the sludge and pollutants is enlarged, the mass transfer effect of the sludge is enhanced, and the activation of the sludge is realized; the cyclone separator 6 releases organic matters adsorbed in sludge pores and extracellular polymeric substances generated by microbial metabolism in the cyclone process, and the substances are used as carbon sources and can provide carbon sources for the denitrification process in the anoxic pond; in the sludge backflow process, high-efficiency denitrifying bacteria can be added into the cyclone separator 6, so that the total nitrogen removal effect is further improved. It is understood that the cyclone separator 6 has been well reported in the prior art, and the specific structure and type thereof are not limited in this embodiment, so as to be realized by those skilled in the art.

Adopt the utility model provides a sewage treatment system, more conventional, activated sludge method is handled, and total nitrogen's desorption efficiency promotes more than 30%, and the mud decrement is more than 30%.

The present invention is explained by the above embodiments, but the present invention is not limited to the above embodiments, and the present invention is not meant to be limited to the above embodiments. It should be understood by those skilled in the art that all modifications and variations of the present invention are intended to fall within the scope and spirit of the present invention.

Claims

1. An enhanced A/O process sewage treatment system is characterized by comprising an anoxic tank (1), an aerobic tank (3), a sedimentation tank (5) and a cyclone separator (6); the anaerobic tank (1) is communicated with the aerobic tank (3) through a pipeline, the aerobic tank (3) is communicated with the sedimentation tank (5) through a pipeline, and the bottom of the sedimentation tank (5) is communicated with the bottom of the anaerobic tank (1) through a cyclone separator (6) through a pipeline.

2. The system for strengthening the A/O process sewage treatment system according to claim 1, wherein the anoxic tank (1) is filled with anoxic tank biological carrier filler (2).

3. The system for strengthening the A/O process sewage treatment system according to claim 2, wherein the anoxic tank biological carrier filler (2) is a polyurethane filler.

4. The sewage treatment system of the enhanced A/O process according to claim 2 or 3, wherein the filling rate of the biological carrier filler (2) in the anoxic tank is 15-30%.

5. The system for strengthening the A/O process sewage treatment system according to claim 1, wherein the aerobic tank (3) is filled with an aerobic tank biological carrier filler (4).

6. An enhanced A/O process wastewater treatment system according to claim 5, characterized in that the aerobic tank bio-carrier packing (4) is MBBR packing.

7. The system for the enhanced A/O process sewage treatment according to claim 5 or 6, wherein the filling rate of the biological carrier filling material (4) of the aerobic tank is 15-30%.

8. The sewage treatment system of the enhanced A/O process according to claim 1, wherein the aerobic tank (3) further returns part of the nitrified liquid to the anoxic tank (1) through a pipeline.