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Domestic sewage treatment microbial inoculant

A technology of domestic sewage and bacterial agent, applied in biological water/sewage treatment, water/sludge/sewage treatment, bacteria and other directions, can solve the problems of environmental burden, manpower and material resources, and the effect is not obvious, and achieve the sludge volume. Less, improve separation, no secondary pollution effect

Active Publication Date: 2014-03-26
江苏德环环保集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Domestic sewage is a kind of sewage with an increasing proportion in today's society, which has a great impact on the natural environment and human life. The content of nitrogen, phosphorus, and oil in domestic sewage is relatively high. Only physical methods and chemical agents are used. It often consumes a lot of manpower and material resources, and the effect is not obvious. The use of a large amount of chemical agents will also cause a burden on the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The bacterial agent for domestic sewage treatment of the present invention comprises the following components by weight ratio: 10 parts of polyacrylamide, 9 parts of polyethyleneimine, 18 parts of silicon dioxide and 23 parts of composite microorganisms.

[0017] The composite microorganisms include 20 parts of Bacillus subtilis, 15 parts of Pseudomonas aeruginosa, 15 parts of Bacillus cereus, 25 parts of Candida lipolytica, 20 parts of nitrifying bacteria and 24 parts of Paracoccus denitrification by weight.

[0018] The strains in the complex microorganisms were activated and expanded respectively. The culture medium was: 1% yeast extract, 1.5% peptone, 0.5% glucose, NH 4 Cl 2 0.5%, K 2 HPO 4 0.5%, the balance is water, and the medium is sterilized at 121°C for 20 minutes.

[0019] After activating and expanding the culture of each strain in the composite microorganisms, they are respectively inoculated into the culture medium of mixed strains at a volume percentag...

Embodiment 2

[0025] The bacterial agent for domestic sewage treatment of the present invention comprises the following components by weight ratio: 5 parts of polyacrylamide, 8 parts of polyethyleneimine, 15 parts of silicon dioxide and 20 parts of composite microorganisms.

[0026] The composite microorganisms include 20 parts of Bacillus subtilis, 15 parts of Pseudomonas aeruginosa, 15 parts of Bacillus cereus, 25 parts of Candida lipolytica, 20 parts of nitrifying bacteria and 24 parts of Paracoccus denitrification by weight.

[0027] The strains in the complex microorganisms were activated and expanded respectively. The culture medium was: 1% yeast extract, 1.5% peptone, 0.5% glucose, NH 4 Cl 2 0.5%, K 2 HPO 4 0.5%, the balance is water, and the medium is sterilized at 121°C for 20 minutes.

[0028] After activating and expanding the culture of each strain in the composite microorganisms, they are respectively inoculated into the culture medium of mixed strains at a volume percentage...

Embodiment 3

[0034] The bacterial agent for domestic sewage treatment of the present invention comprises the following components by weight ratio: 15 parts of polyacrylamide, 10 parts of polyethyleneimine, 20 parts of silicon dioxide and 25 parts of composite microorganisms.

[0035] The composite microorganisms include 20 parts of Bacillus subtilis, 15 parts of Pseudomonas aeruginosa, 15 parts of Bacillus cereus, 25 parts of Candida lipolytica, 20 parts of nitrifying bacteria and 24 parts of Paracoccus denitrification by weight.

[0036] The strains in the complex microorganisms were activated and expanded respectively. The culture medium was: 1% yeast extract, 1.5% peptone, 0.5% glucose, NH 4 Cl 2 0.5%, K 2 HPO 4 0.5%, the balance is water, and the medium is sterilized at 121°C for 20 minutes.

[0037] After activating and expanding the culture of each strain in the composite microorganisms, they are respectively inoculated into the culture medium of mixed strains at a volume percenta...

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PUM

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Abstract

The invention discloses a domestic sewage treatment microbial inoculant which comprises polyacrylamide, polyethyleneimine, silicon dioxide and compound microorganisms, wherein the compound microorganisms include Bacillus subtilis, Pseudomonas aeruginosa, Bacillus cereus, Candida lipolytica, nitrobacteria and Paracoccus denitrificans. The treatment agent can effectively treat domestic sewage, is low in cost and favorable in effect, and reduces pollution of the domestic sewage to the ecological environment; the sewage suspended substance removal rate is up to 99.8%, the BOD (biochemical oxygen demand) removal rate is 98%, the COD (chemical oxygen demand) removal rate is 98.6%, the chroma is 5, and the sludge quantity is so low that no sludge treatment system needs to be arranged; and the domestic sewage treatment microbial inoculant causes no secondary pollution, and is stable in treatment effect, environment-friendly and non-toxic.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a bacterial agent for domestic sewage treatment. Background technique [0002] Domestic sewage is a kind of sewage with an increasing proportion in today's society, which has a great impact on the natural environment and human life. The content of nitrogen, phosphorus, and oil in domestic sewage is relatively high. Only physical methods and chemical agents are used. It often consumes a lot of manpower and material resources, and the effect is not obvious, and the use of a large amount of chemical agents will also cause a burden on the environment. Microbial treatment agents play an increasingly important role in sewage treatment. Contents of the invention [0003] The object of the present invention is to provide a bacterial agent for domestic sewage treatment aiming at the defects mentioned above. The treatment agent can effectively treat domestic sewage, with low c...

Claims

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Application Information

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IPC IPC(8): C12N1/20C12N1/16C02F3/34C12R1/125C12R1/385C12R1/085C12R1/73C12R1/01
Inventor 牟军平刘晓
Owner 江苏德环环保集团有限公司
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