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Continuous type sewage treatment method and device

A sewage treatment and sewage technology, applied in biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. The effect of less pollution, long mud age and avoiding large consumption

Active Publication Date: 2018-11-13
INST OF ENVIRONMENTAL MEDICINE & OCCUPATIONAL MEDICINE ACAD OF MILITARY MEDICINE ACAD OF MILITARY SCI
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that there is no high-efficiency sewage treatment method with polysaccharide bacteria as the core in the prior art, the present invention provides a continuous sewage treatment method with the function of polysaccharide bacteria as the core, without adding exogenous carbon sources, removing High nitrogen efficiency and low sludge production

Method used

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  • Continuous type sewage treatment method and device

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Effect test

Embodiment 1

[0083] 1. Test object: This embodiment is a continuous flow polysaccharide bacteria biological denitrification sewage treatment process and treatment method. For the treatment of artificially simulated sewage, the water quality of the sewage to be treated was tested according to the national standard method stipulated in "Water and Wastewater Monitoring and Analysis Methods (Fourth Edition)" compiled by the State Environmental Protection Administration and published by China Environmental Science Press. The results showed that the influent The concentration in terms of COD is 180-220mg / L, ammonia nitrogen is 40-50mg / L, and total nitrogen is 45-55mg / L.

[0084] 2. Test device: The sewage treatment device used is such as figure 1 As shown, including anaerobic tank, sedimentation tank I, nitrification tank, sludge aeration tank I, sludge aeration tank II, anoxic tank, aerobic tank and sedimentation tank II; the anaerobic tank, sedimentation tank I , nitrification tank, anoxic ta...

Embodiment 2

[0097] 1. Test object: This example is a method for urban sewage treatment using the continuous flow glycan bacteria biological denitrification sewage treatment process device described in Example 1. Use the effluent from the primary sedimentation tank of a certain urban sewage treatment plant as the influent water source, and treat it according to the national standard method stipulated in "Water and Wastewater Monitoring and Analysis Methods (Fourth Edition)" compiled by the State Environmental Protection Administration and published by China Environmental Science Press. The water quality of the sewage was tested, and the results showed that the influent concentration in terms of COD was 150-180mg / L, ammonia nitrogen was 20-30mg / L, and total nitrogen was 25-35mg / L.

[0098] 2. Test device: The sewage treatment device used is such as figure 1 As shown, including anaerobic tank, sedimentation tank I, nitrification tank, sludge aeration tank I, sludge aeration tank II, anoxic t...

Embodiment 3

[0111] 1. Test object: This example is a method for urban sewage treatment using the continuous flow glycan bacteria biological denitrification sewage treatment process device described in Example 1. Use the effluent from the primary sedimentation tank of a certain urban sewage treatment plant as the influent water source, and treat it according to the national standard method stipulated in "Water and Wastewater Monitoring and Analysis Methods (Fourth Edition)" compiled by the State Environmental Protection Administration and published by China Environmental Science Press. The water quality of the sewage was tested, and the results showed that the influent concentration in terms of COD was 150-180mg / L, ammonia nitrogen was 20-30mg / L, and total nitrogen was 25-35mg / L.

[0112] 2. Test device: The sewage treatment device used is such as figure 1 As shown, including anaerobic tank, sedimentation tank I, nitrification tank, sludge aeration tank I, sludge aeration tank II, anoxic t...

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Abstract

The invention relates to the field of sewage treatment and provides a continuous type sewage treatment method. Glycan bacterium active sludge is subjected to anaerobic reaction to transform organic matters in sewage into intracellular matters for storage, and then the intracellular matters are precipitated and separated to obtain sewage supernatant and the glycan bacterium active sludge. The sewage supernatant is subjected to nitration reaction to transform ammonia nitrogen into nitrate nitrogen; the glycan bacterium active sludge is aerated to rapidly start an intracellular storage metabolicpathway; meanwhile, the content of intracellular storage substances is kept. The sewage subjected to nitration treatment, and the aerated glycan bacterium active sludge are subjected to denitrification reaction to obtain a denitrified sludge-water mixture. The denitrified mud-water mixture is subjected to aerobic reaction to adjust the property of sludge. Then secondary sedimentation and separation are carried out to obtain output water and the glycan bacterium active sludge; the glycan bacterium active sludge obtained by the sedimentation is refluxed into an anaerobic tank to realize continuous type sewage treatment. The method provided by the invention takes glycan bacterium metabolism as a core, and carbon circulation and nitrogen circulation of the glycan bacterium metabolism are coupled to finish synchronous and efficient removal of sewage organic matters and nitrogen.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a continuous sewage treatment method and a device thereof. Background technique [0002] Storage reaction is an instinctive reaction of microbial metabolism, and it is also one of the most effective ways to utilize microbial carbon sources. The sewage biological treatment process with typical storage reaction characteristics includes phosphorus accumulating bacteria and polysaccharide bacteria. Among them, Glycogen Accumulating Organisms (GAOs) are typically characterized by using glycogen as an anaerobic metabolic energy source, which is characterized by anaerobic absorption and storage of organic matter without releasing phosphorus, and synthesizing glycogen without absorbing phosphorus in the aerobic stage. At present, the research on polysaccharide bacteria is all in the biological phosphorus removal system. Since phosphorus accumulating bacteria are not the dominan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F3/02C02F3/1205C02F3/121C02F3/28C02F3/302C02F3/34C02F2001/007
Inventor 邱志刚王景峰李辰宇王尚薛斌谌志强肖忠海李超
Owner INST OF ENVIRONMENTAL MEDICINE & OCCUPATIONAL MEDICINE ACAD OF MILITARY MEDICINE ACAD OF MILITARY SCI
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