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Urban sewage treatment device adopting denitrifying glycogen accumulating organisms (DGAOs) and treatment method thereof

A technology for nitrifying polysaccharide bacteria and urban sewage, which is applied in the directions of water/sewage multi-stage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. It can solve the problems of insufficient understanding of polysaccharide bacteria and achieve Small secondary pollution, reduced operating costs, and high nitrogen removal efficiency

Inactive Publication Date: 2012-06-27
INST OF HYGIENE & ENVIRONMENTAL MEDICINE PLA ACAD OF MILITARY MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, compared with the research on phosphorus-accumulating bacteria, the understanding of polysaccharide bacteria is still far from enough

Method used

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  • Urban sewage treatment device adopting denitrifying glycogen accumulating organisms (DGAOs) and treatment method thereof
  • Urban sewage treatment device adopting denitrifying glycogen accumulating organisms (DGAOs) and treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] figure 1 It is a schematic diagram of the structure of the denitrifying polysaccharide bacteria urban sewage treatment device. As shown in the figure, it is a denitrifying polysaccharide bacteria urban sewage treatment device, including a sequencing batch reaction tank and an intermediate water tank. It is characterized in that the above-mentioned sequencing batch reaction tank includes the same effective volume, and is equipped with a stirring device 51, respectively. 52 A anaerobic / anoxic pool 1 and B anaerobic / anoxic pool 2 and an aerobic pool 3 whose effective volume is 3 to 5 times the effective volume of A anaerobic / anoxic pool 1, and the inner bottom of the aerobic pool 3 The aerator 4 is set, the effective volume of the above-mentioned intermediate water tank 7 is the same as that of the aerobic pool 3, and the anaerobic water outlets 12, 22 of the A anaerobic / anoxic pool 1 and B anaerobic / anoxic pool 2 are all Connect to the upper port of the aerobic pool 3, t...

Embodiment 2-1

[0021] This embodiment is a method for urban sewage treatment using the denitrifying polysaccharide bacteria urban sewage treatment device described in Example 1. The effective volume of A anaerobic / anoxic pool 1 and B anaerobic / anoxic pool 2 is 10 liters, the effective volume of aerobic pool 3 is 30 liters, and the effective volume of the intermediate water tank is 30 liters, using the sequence batch operation mode , The sludge concentration of A and B anaerobic / anoxic pools 1 and 2 is 3000-7000mg / L; the sludge concentration of aerobic tank 3 is 1500-2500mg / L; the drainage volume exchange rate of the above-mentioned reaction tanks is 60% The sludge sludge age is all controlled at 30 days; a certain urban sewage is treated, and the water quality is carried out according to the national standard method stipulated in "Water and Wastewater Monitoring and Analysis Methods (Fourth Edition)" written by the State Environmental Protection Administration and published by China Environme...

Embodiment 2-2

[0027] This embodiment is a method for urban sewage treatment using the denitrifying polysaccharide bacteria urban sewage treatment device described in Example 1. The effective volume of A anaerobic / anoxic pool 1 and B anaerobic / anoxic pool 2 is 20 liters, the effective volume of aerobic pool 3 is 80 liters, and the effective volume of the intermediate water tank is 80 liters. , The sludge concentration of A and B anaerobic / anoxic pools 1 and 2 is 3000-7000mg / L; the sludge concentration of aerobic tank 3 is 2500-4000mg / L; the drainage volume exchange rate of the above-mentioned reaction tanks is 75% The sludge sludge age is all controlled at 60 days; the primary sedimentation tank effluent of a certain urban sewage treatment plant is used as the water source, according to the "Water and Wastewater Monitoring and Analysis Method (The Fourth) compiled by the State Environmental Protection Administration and published by China Environmental Science Press. Edition) "The national s...

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Abstract

The invention relates to an urban sewage treatment device adopting denitrifying glycogen accumulating organisms (DGAOs) and a treatment method thereof. The treatment device comprises a sequencing batch reaction pond and a middle water tank, wherein the reaction pond contains an anaerobic / anoxic pond A, an anaerobic / anoxic pond B and an aerobic pond the active volume of which is 3-5 times that of the anaerobic / anoxic pond A; the active volume of the middle water tank is equal to that of the aerobic pond; the anaerobic water outlets of the anaerobic / anoxic pond A and the anaerobic / anoxic pond Bare connected with the aerobic pond, the aerobic pond is connected with the middle water tank; and the water in the middle water tank is delivered to the anaerobic / anoxic pond A and the anaerobic / anoxic pond B respectively. The treatment method provided by the invention comprises: all the reaction ponds operate simultaneously, wherein the operation mode of the anaerobic / anoxic pond A comprises the following steps: charging sewage, performing anaerobic stirring, precipitating, discharging water to the aerobic pond, charging water into the middle water tank, performing anoxic stirring, precipitating and discharging from the water outlet; and the operation mode of the anaerobic / anoxic pond B comprises the following steps: charging water into the middle water tank, performing anoxic stirring,precipitating, discharging from the water outlet, charging sewage, performing anaerobic stirring, precipitating and discharging into the aerobic pond. The treatment device and treatment method provided by the invention have the following advantages: the denitrification efficiency is increased, the energy is saved, the secondary pollution is low, and the process is simplified.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a denitrifying polysaccharide bacteria urban sewage treatment device and treatment method. Background technique [0002] The typical feature of Glycogen Accumulating Organisms (GAOs) is that glycogen is used as an anaerobic metabolic energy source, which is characterized by anaerobic absorption and storage of organic matter without phosphorus release, and synthesis of glycogen without phosphorus uptake in the aerobic stage. The research on polysaccharomyces is triggered by the biological phosphorus removal system (EBPR). In recent years, studies have found that polysaccharomyces widely exist in the EBPR system. [0003] For a long time, the main purpose of many studies is to realize the regulation of the dominant flora of phosphorus accumulating bacteria in the EBPR system, and inhibit the growth of polysaccharide bacteria. Therefore, compared with the research on phosp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/52C02F3/30
Inventor 王景峰张斌李君文邱志刚谌志强王新为金敏陈照立
Owner INST OF HYGIENE & ENVIRONMENTAL MEDICINE PLA ACAD OF MILITARY MEDICAL