Composite microbial preparation for in-situ remediation of drain outlet of steel smelting port ditch

A composite microorganism and in-situ repair technology, applied in the field of composite microbial preparations, can solve the problems of reducing oily substances and inapplicable in-situ repair, and achieve the effects of promoting dissolution, improving sedimentation performance, and strengthening the mass transfer process

Active Publication Date: 2020-02-14
葛洲坝集团生态环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This microbial preparation has a good removal effect on hydrogen sulfide and ammonia, but it is difficult to achieve an ideal reduction effect on oily substances, and is not suitable for black and odorous bottom sludge containing high content of oily substances such as the bottom sludge of Yeganggang Canal in situ repair

Method used

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  • Composite microbial preparation for in-situ remediation of drain outlet of steel smelting port ditch
  • Composite microbial preparation for in-situ remediation of drain outlet of steel smelting port ditch
  • Composite microbial preparation for in-situ remediation of drain outlet of steel smelting port ditch

Examples

Experimental program
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Effect test

preparation example Construction

[0029] The preparation method of the modified steel slag is as follows: mix the steel slag and 2mol / L hydrochloric acid solution at a mass volume ratio of 1:1-2, stir at room temperature for 4-6 hours to obtain porous steel slag, then drain the porous steel slag, and use deionized Wash with water until neutral, grind and magnetically separate to obtain modified steel slag from which magnetic metals have been removed.

[0030] The preparation method of the modified steel slag loaded with microorganisms: adding the mixed bacteria powder and modified steel slag into the fermentation medium, shaking and culturing at room temperature at 100-150 rpm for 6-8 hours, freeze-drying until the water content is lower than 6%, and obtaining the modified microorganism-loaded steel slag. Steel slag;

[0031] It has been found through experiments that when the parameters of the above preparation method are reasonably adjusted within the protection scope of the present application, the performa...

Embodiment 1

[0033] A compound microbial preparation for in-situ restoration of the sewage outlet of the Smelting Ganggang Canal, comprising: 20 parts of Aspergillus niger, 15 parts of Monascus, 40 parts of Nitrobacter victorii, 12 parts of Thiobacillus denitrificans, 10 parts of anaerobic Ammonia oxidizing bacteria, 15 parts of Pseudomonas stutzeri, 15 parts of Acinetobacter venezii, 28 parts of Bacillus licheniformis, 155 parts of carrier, and the carrier is made of modified steel slag. Its preparation method comprises the following steps:

[0034] S1. Preparation of microbial fermentation broth: respectively cultivate Aspergillus niger, Monascus, Nitrobacter victoria, Thiobacillus denitrification, anammox bacteria, Pseudomonas stutzeri, Acinetobacter venezii and Bacillus licheniformis to live bacteria Number greater than 2×10 9 CFU / mL, freeze-dried to obtain the seed powder of various strains, and then uniformly mixed the seed powder according to the proportion by mass to obtain the mi...

Embodiment 2

[0038] Example 2 is basically the same as Example 1, the difference being that the carrier is made of modified steel slag and coconut shell at a mass ratio of 12:1. Its preparation method comprises the following steps:

[0039] S1. Preparation of microbial fermentation broth: respectively cultivate Aspergillus niger, Monascus, Nitrobacter victoria, Thiobacillus denitrification, anammox bacteria, Pseudomonas stutzeri, Acinetobacter venezii and Bacillus licheniformis to live bacteria Number greater than 2×10 9 CFU / mL, freeze-dried to obtain the seed powder of various strains, and then uniformly mixed the seed powder according to the proportion by mass to obtain the mixed powder;

[0040] S2. Add the mixed bacteria powder and modified steel slag to the fermentation medium, shake and cultivate at room temperature at 100-150 rpm for 6-8 hours, freeze-dry until the water content is lower than 6%, and obtain the modified steel slag loaded with microorganisms;

[0041] S3. Take the ...

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Abstract

The invention belongs to the technical field of environmental protection and particularly relates to a composite microbial preparation for in-situ remediation of a drain outlet of a steel smelting port ditch. The composite microbial preparation comprises the ingredients in parts by weight: 15-25 parts of Aspergillus niger, 10-20 parts of Monascaceae, 30-50 parts of Nitrobacter winogradskyi, 8-16 parts of thiobacillus denitrificans, 8-12 parts of anaerobic ammonia oxidizing bacteria, 10-20 parts of pseudomonas stutzeri, 10-20 parts of Acinetobacter venetianus and 91-195 parts of vector. The composite microbial preparation is prepared from a variety of microbes, all strains can grow well and can rapidly occupy different ecological niches in bottom sludge of the steel smelting port ditch, allclasses of substances such as organic matters and sulfides are degraded through synergism, the pertinency is high, and the effect of removing COD, ammonia nitrogen and off odors is remarkable.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a composite microbial preparation used for in-situ restoration of sewage outlets of Yeganggang Canal. Background technique [0002] With the continuous discharge of industrial wastewater such as smelting steel into the surrounding environment, pollutants in the downstream river channel of smelting steel port have accumulated seriously and formed a vicious circle. Its pollution sources are mainly divided into two types: internal source and external source. When the external source is under preliminary control, internal source pollution is the main reason for maintaining eutrophication or deteriorating water quality in the downstream. Sediment is the main accumulation place where pollutants gather, and it will continuously release pollutants into the water body. Therefore, river channel management and sediment control are fundamental. There are many technologies t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C12N1/20C12N1/14C12R1/685C12R1/66C12R1/01C12R1/38C02F103/16
CPCC02F3/34C12N1/20C12N1/14C02F2103/16Y02W10/10
Inventor 周献忠吴磊胡宝伽
Owner 葛洲坝集团生态环保有限公司
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