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Technique for treating wastewater by using microorganism

A microbial treatment and composite microbial technology, applied in the field of sewage treatment, can solve the problems of sewage foam affecting aeration efficiency, long cultivation and domestication period, and large project investment, and achieve the effects of easy maintenance, low treatment cost, and low investment

Inactive Publication Date: 2005-06-08
HAIFA GROUP CHENGDU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the treatment process of urban sewage in my country mainly adopts the conventional activated sludge method, which is a suspension growth system. A large amount of activated sludge sources need to be introduced at the initial start-up, the cultivation period is long, the start-up is slow, and a sludge return system needs to be set up , Sludge bulking may also occur, once it happens, the consequences will be serious, at the same time, sewage foam will affect the aeration efficiency
Furthermore, the one-time engineering investment is large, the processing cost is high, and the power consumption is relatively large.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1: From April to July 2002, early treatment was carried out in Yinma River, Chengdu, with a water volume of 3000m 3 In-situ purification of limited amount of polluted rivers is a productive test project. The composition of composite microbial preparation is by weight percentage:

[0011] Yeast 15%

[0012] Lactic acid bacteria 5%

[0013] Actinomycetes 10%

[0014] Nitrobacter 10%

[0015] Denitrifying bacteria 15%

[0016] Bacillus 25%

[0017] Photosynthetic bacteria 10%

[0018] Ammonia oxidizing bacteria 5%

[0019] Ammonifying bacteria 5%

[0020] The governance process is:

[0021] 1) In the initial stage of dynamic cultivation, first control the pH value of the sewage to 6-9 and the temperature to 15-25°C, then introduce the sewage into the treatment area, and increase the oxygen in the sewage to 1.5-2.0 mg through the circulation of the pump and the aeration equipment / L, put in the compound microbial preparation, the input amount is 10g / m 3 S...

Embodiment 2

[0025] Example 2: From January to May 2003, early treatment was carried out in Xixiao River, Chengdu, with a water volume of 60,000m 3 Open purification project of polluted river water. The composition of composite microbial preparation is by weight percentage:

[0026] Yeast 15%

[0027] Lactic acid bacteria 5%

[0028] Actinomycetes 10%

[0029] Nitrobacter 10%

[0030] Denitrifying bacteria 10%

[0031] Nitrosoderm 5%

[0032] Photosynthetic bacteria 10%

[0033] Bacillus 20%

[0034] Ammonia oxidizing bacteria 5%

[0035] Ammonifying bacteria 5%

[0036] Pseudomonas 4%

[0037] Methanogens 1%

[0038] The governance process is:

[0039] 1) In the initial stage of dynamic cultivation, first control the pH value of the sewage to 6-9 and the temperature to 5-20°C, then introduce the sewage into the treatment area, and increase the oxygen in the sewage to 1.5-2.0 mg through the circulation of the pump and the aeration equipment / L, put in the compound microbial pr...

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PUM

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Abstract

The invention provides a process for treating sewage by using microorganisms. It uses a compound microbial preparation composed of various microorganisms to deeply degrade the pollutants in the sewage. The treatment process is carried out in three stages. 15 days; the dynamic culture stage is generally 8 to 10 days, and the dynamic operation stage is after the dynamic culture stage to continuous sewage treatment. The method can complete water purification in a safe, harmless, thorough and efficient manner, and when the microbial treatment is started, there is no need to use sludge to cultivate microorganisms, and the compound microbial preparation is clean, non-toxic, harmless, and does not produce secondary pollution. Simple, easy to maintain, easy to operate, low investment and low operating cost. It can treat high-concentration organic wastewater, garbage waste liquid and domestic sewage.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to a process for treating sewage by using microorganisms. Background technique [0002] At present, the treatment process of urban sewage in my country mainly adopts the conventional activated sludge method, which is a suspension growth system. A large amount of activated sludge sources need to be introduced at the initial start-up, the cultivation period is long, the start-up is slow, and a sludge return system needs to be set up , Sludge bulking may also occur, and once it occurs, the consequences will be serious. At the same time, sewage foam will affect the aeration efficiency. Furthermore, the one-time engineering investment is large, the processing cost is high, and the power consumption is relatively large. Contents of the invention [0003] The object of the present invention is to provide a process for treating sewage with microorganisms, which can purify water safely, harmles...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34
Inventor 江涛蒲林章毓英康妍陈学良彭鸿镇张从仁张先愚
Owner HAIFA GROUP CHENGDU