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A method and device for continuous sewage treatment

A sewage treatment and sewage technology, which is applied in water/sewage multi-stage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc. The effect of less secondary pollution, long mud age, and accelerated start-up

Active Publication Date: 2021-04-20
INST OF ENVIRONMENTAL MEDICINE & OCCUPATIONAL MEDICINE ACAD OF MILITARY MEDICINE ACAD OF MILITARY SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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

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  • A method and device for continuous sewage treatment

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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 method for continuous sewage treatment. The polysaccharide bacteria activated sludge converts organic matter in sewage into intracellular substances for storage through anaerobic reaction, and precipitates and separates to obtain sewage supernatant and polysaccharide bacteria. activated sludge. Sewage supernatant undergoes nitrification reaction to convert ammonia nitrogen into nitrate nitrogen; aerates the activated sludge of polysaccharide bacteria to quickly start the intracellular storage metabolic pathway while maintaining the content of intracellular storage substances. The denitrification reaction is carried out between the nitrified sewage and the aerated polysaccharide bacteria activated sludge to obtain a denitrified mud-water mixture. The denitrified sludge-water mixture undergoes aerobic reaction to adjust sludge properties. Precipitate again, separate the effluent and polysaccharide bacteria activated sludge, and the precipitated polysaccharide bacteria activated sludge is returned to the anaerobic tank to realize continuous sewage treatment. The method of the invention takes the metabolism of polysaccharide bacteria as the core, and completes the synchronous and efficient removal of sewage organic matter and nitrogen through the coupling of its carbon cycle and nitrogen cycle.

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 Patents(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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