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A method for inoculating and cultivating bacteria from activated sludge

A technology of activated sludge and inoculation activity, which is applied in chemical instruments and methods, biochemical equipment and methods, water/sludge/sewage treatment, etc., and can solve problems affecting the effect and efficiency of sewage treatment.

Active Publication Date: 2021-03-02
GUANGDONG YUANTIAN ENG
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Problems solved by technology

[0005] At present, the purpose of sludge cultivation in sewage treatment plants is to cultivate high-quality activated sludge in the shortest possible time, and the specific steps and condition parameters of steps such as smoldering and domestication will directly affect the cultivation of each culture. The effect of steps, such as the growth and domestication of active protozoa at each stage, and ultimately affect the effect and efficiency of sewage treatment

Method used

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  • A method for inoculating and cultivating bacteria from activated sludge
  • A method for inoculating and cultivating bacteria from activated sludge
  • A method for inoculating and cultivating bacteria from activated sludge

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Embodiment 1

[0031] (1) First inject a certain amount of sewage to be treated into the biochemical pool, the water level is controlled at about 3 meters, it is advisable to submerge the submersible flowmaker, turn on the submersible flowmaker, and then inject 30m 3 Raw sludge (digested sludge from the sludge digester) is put into the biochemical tank.

[0032] (2) Boring exposure: Boring exposure is carried out after feeding. The DO should be controlled at 5mg / L during the stuffy exposure period, and the fermented foot flour (per 100m 3 The mixed solution in the pool can be put in by 5-10 kg), and the mass ratio of carbon, nitrogen and phosphorus in the control water is 100:5:1. On the first day, the aeration takes 6 hours of oxygenation and 4 hours of shutdown.

[0033] (3) Feeding again: After 1d of stuffy exposure, the mass concentration of COD dropped to about 100mg / L on the second day. Stop the aeration, stop the submersible thruster, and start water inflow after the water in the p...

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Abstract

The invention belongs to the technical field of sewage biological treatment, in particular to a method for inoculating and cultivating bacteria with activated sludge. Fill the biochemical tank with domestic sewage, then inoculate activated sludge, and culture under the condition of DO value 5-10mg / L, stop the aeration, and after the water in the pool is calm, inject new domestic sewage to discharge the supernatant, and add again Nutrients are cultured with stuffy exposure; repeat the process of stuffy exposure culture, static settling, and stuffy exposure culture until the sludge sedimentation ratio and concentration reach the target value, and the cultivation is completed; After the water quality and sludge concentration reach the standard, the water will be changed, and finally the continuous water intake will be realized. The invention can make the concentration of the activated sludge quickly reach the value required by the process and complete the bacteria cultivation process by means of suffocating exposure cultivation and controlling the cultivation conditions. The activated sludge after cultivation and domestication can be applied to the efficient treatment of urban domestic sewage.

Description

technical field [0001] The invention relates to the technical field of sewage biological treatment, in particular to a method for inoculating and cultivating bacteria with activated sludge. Background technique [0002] The enrichment culture of activated sludge is the key to the start-up of sewage treatment plants. Activated sludge is composed of active microorganisms, residues oxidized by microorganisms, and organic matter adsorbed on activated sludge that cannot be degraded by microorganisms. Microorganisms are the main component of activated sludge. The operation of a sewage treatment system must have activated sludge and its corresponding biological phase. Therefore, the newly commissioned sewage treatment plants need to cultivate and domesticate activated sludge. [0003] Activated sludge cultivation in sewage treatment is to provide certain growth and reproduction conditions for the microorganisms of activated sludge, that is, nutrients, dissolved oxygen, suitable t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C12N1/00
CPCC02F3/34C12N1/00
Inventor 谢颖何玉婷刘旭林钟增雄陈广生张光泽邱建军陆金伦蔡健卫
Owner GUANGDONG YUANTIAN ENG
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