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Microbial degradation method for pollutants in industrial sewage

A technology for microbial degradation and industrial sewage, applied in microorganism-based methods, biochemical equipment and methods, microorganisms, etc., can solve problems such as increased operating costs, sensitivity to changes in microbial environment temperature and pH value, and secondary pollution. Solve the effect of unsuitable growth, reduce the amount of input, and reduce interference

Active Publication Date: 2017-10-13
江苏长三角环境科学技术研究院有限公司
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Problems solved by technology

[0004] The ectopic microbial remediation technology also has shortcomings, such as providing electron acceptors through aeration, which increases the operating cost; when the amount of nutrients added is excessive, it will also cause secondary pollution; more sensitive to changes in

Method used

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Examples

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Embodiment 1

[0039] Example 1: Microbial degradation process of industrial wastewater from Shengjie Chemical Plant

[0040] A method for the ectopic microbial remediation of industrial sewage using a composite microbial agent for ectopic microbial remediation of industrial sewage, said method comprising the steps of:

[0041] (1) Take 50mL of industrial sewage from Shengjie Chemical Plant, and use Nessler's reagent spectrophotometry (HJ535-2009) to detect its initial ammonia nitrogen concentration;

[0042] (2) Different single denitrification strains, Raoultella and Pseudomonas were obtained through the screening of activated sludge. After the compound microbial strains were activated and expanded, each 500 μL was inserted into the industrial sewage, and then according to the carbon Add 0.1634g of sodium citrate at a nitrogen ratio of 8:1, and incubate at 30°C and 200rpm for 24 hours;

[0043] (3) Add 1.023g of diatomaceous earth in the chemical plant industrial sewage of step (2) gained...

Embodiment 2

[0049] Example 2: Microbial degradation process of wastewater from a textile factory

[0050] A method for the ectopic microbial remediation of textile mill sewage using a composite microbial agent for ectopic microbial remediation of industrial sewage, said method comprising the steps of:

[0051] (1), get 50mL textile mill sewage, use Nessler's reagent spectrophotometry (HJ535-2009) to detect its initial ammonia nitrogen concentration;

[0052] (2), after the compound microbial strain of Raoultella and Pseudomonas was activated and expanded, each 25 μL was inserted into the industrial sewage, and then 0.0100 g of sodium citrate was added according to the carbon-to-nitrogen ratio of 5:1, at 30 Cultivate for 24 hours at 200 rpm under the condition of ℃;

[0053](3) add 0.614g diatomaceous earth in the chemical plant industrial sewage of step (2) gained, stir, suction filtration, obtain supernatant, and carry out the detection of ammonia nitrogen content to supernatant;

[00...

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Abstract

The invention discloses a microbial degradation method for pollutants in industrial sewage. The method includes: (1) taking chemical plant industrial sewage, and testing the initial ammonia nitrogen concentration; (2) adding a compound microbial agent into industrial sewage, then adding a certain amount of carbon source, and then performing microbial cultivation; (3) adding diatomite into the chemical plant industrial sewage, conducting stirring and pumping filtration to obtain supernatant; (4) adding the compound microbial agent and the carbon source into the supernatant again, and performing cultivation; and (5) subjecting the supernatant to centrifugal treatment to obtain supernate, i.e. restored industrial sewage. According to the invention, a screened efficient heterotrophic nitrification-aerobic denitrification strain, i.e. a compound inoculant of raoultella and pseudomonas is adopted as the bacteria source for inoculation and expanding culture, and is then applied to purification treatment of high pollution industrial sewage, mainly for lowering the ammonia nitrogen concentration exceeding the standard. Use of the compound inoculant for treatment of industrial sewage has the advantages of simple operation, high efficiency and good treatment effect, etc.

Description

technical field [0001] The application relates to a method for microbial degradation of pollutants in industrial sewage, which belongs to the technical field of environmental microorganisms. Background technique [0002] At present, the industrial wastewater produced by many chemical plants in our country is rich in nitrogen, phosphorus, inorganic salts and other substances. If chemical plants discharge untreated industrial wastewater privately in violation of laws and regulations, it will cause eutrophication after entering public water sources. The conventional treatment method in the prior art is to add chemicals to the industrial waste water for neutralization, and then discharge it after reaching the discharge standard. [0003] Microbial remediation technology is a new technology for water pollution remediation that has developed rapidly recently. This remediation technology mainly uses microorganisms to absorb, transform or degrade pollutants in water bodies, so as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C12N1/20C12R1/01C12R1/38
CPCC02F3/34C12N1/20
Inventor 吴婧唐晓声周梦凯尹博文
Owner 江苏长三角环境科学技术研究院有限公司
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