Method for digesting black and odorous river by microbial preparation

A technology of microbial preparations and microbial strains, applied in the field of decontamination of black and odorous rivers, can solve problems such as weak degradation ability, endogenous pollution of sediment, and ineffective elimination of black and odorous water bodies, etc., and achieve the effect of enhanced reduction

Inactive Publication Date: 2020-02-21
ZHEJIANG WORLD CLEAN ENVIRONMENT ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2) In polluted urban water bodies, some pollutants continue to enter the bottom mud of the water body through sedimentation or adsorption, and the pollutants and NH3-N in the bottom mud begin to be released under acidic and reducing conditions, resulting in repeated pollution from the bottom mud
Among them, the biological method is a relatively common method at present, using microbial agents to treat black and odorous water bodies in cities. The efficiency is low, and the elimination effect on black and odorous water is not obvious, etc.

Method used

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  • Method for digesting black and odorous river by microbial preparation
  • Method for digesting black and odorous river by microbial preparation
  • Method for digesting black and odorous river by microbial preparation

Examples

Experimental program
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Effect test

Embodiment 1

[0046] A method for microbial preparations to decompose black and odorous river courses, the method comprises the steps of:

[0047] (1) Pretreatment of black and odorous rivers:

[0048] Drain the sewage of the black and odorous river to be treated to the first treatment tank for pretreatment, and filter the floating impurities in it; suck the sludge of the black and odorous river to be treated into the second treatment tank for pretreatment to remove large particles of inorganic impurities;

[0049] (2) Treatment of sewage:

[0050] Cultivate the microbial strains on the first carrier to obtain the first microbial preparation; then uniformly add the first microbial preparation to the pretreated first treatment tank, and the solid-liquid ratio of the first microbial preparation to the sewage is 1:10. And take samples to detect COD, TP, NH 4 + And TN indicators, when the detection values ​​of all indicators of the effluent meet the first-class A effluent standard, the mater...

Embodiment 2

[0070]Adopt the method identical with embodiment 1, only change the solid-liquid ratio of the first microbial agent and sewage in step (2) to 1:10; Bacillus licheniformis: denitrifying bacteria: photosynthetic bacteria: lactic acid bacteria: yeast = 6.0: 4.0: 3.0: 5.0: 6.8: 2.5: 2.0.

[0071] In the step (3), the mass ratio of the second microbial preparation and the sludge is changed to 1:30; the composition of the microorganisms is according to the weight ratio, including the following changes: Bacillus subtilis: Bacillus sporogenes: Bacillus licheniformis: Bacillus licheniformis Nitrifying bacteria: photosynthetic bacteria: lactic acid bacteria: yeast = 6.0: 4.0: 3.0: 5.0: 6.8: 2.5: 2.0.

Embodiment 3

[0073] Adopt the method identical with embodiment 1, only change the solid-to-liquid ratio of the first microbial agent and sewage in step (2) to 1:15; Bacillus licheniformis: denitrifying bacteria: photosynthetic bacteria: lactic acid bacteria: yeast = 5.2: 3.7: 2.5: 3.2: 4.8: 1.8: 1.5.

[0074] In the step (3), the mass ratio of the second microbial preparation and the sludge is changed to 1:25; the composition of the microbial strains is changed into according to the weight ratio, including as follows: Bacillus subtilis: Bacillus sporogenes: Bacillus licheniformis: Nitrifying bacteria: photosynthetic bacteria: lactic acid bacteria: yeast = 5.2: 3.7: 2.5: 3.2: 4.8: 1.8: 1.5.

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Abstract

The invention relates to the field of black and odorous river digestion, and concretely relates to a method for digesting a black and odorous river by a microbial preparation. The method for digestingthe black and odorous river by the microbial preparation comprises the following steps: (1) pretreatment of the black and odorous river; (2) sewage treatment; (3) sludge treatment; and (4) application of a sludge treatment material. The problems of poor degradation capacity on pollutants such as nitrogen, phosphorus and organic matters, low treatment efficiency and unobvious black and odorous water elimination effect in the process of applying microbial preparations in the prior art to treatment of the black and odorous water are solved. The method for digesting the black and odorous river bythe microbial preparation is perfect, achieves excellent effect, realizes reasonable utilization of wastes, and meets the requirements of the national sustainable development strategy.

Description

technical field [0001] The invention relates to the field of dissolving black and odorous rivers, in particular to a method for dissolving black and odorous rivers with microbial preparations. Background technique [0002] The black and odorous water body is mainly related to the eutrophication of the water body and the long-term sediment deposition caused by the lack of oxygen in the water body. The main causes of black and odorous water are: 1) exogenous organic matter, NH 3 -N constantly consumes oxygen in the water. Due to exogenous organic matter in urban water bodies (such as domestic and industrial and agricultural sewage, agricultural product processing residues, livestock and poultry manure, etc.), the environmental capacity of the water body exceeds the storage range, and the dissolved oxygen (DO) contained in the anaerobic bacteria in the water body continues to consume to It works at the lower limit, prompting organic matter to produce ammonia and NH 3 、H 2 S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/34C02F11/00C02F11/02C12N11/14
CPCC02F3/34C02F11/00C02F11/02C02F2209/08C02F2209/14C02F2209/16C02F2209/18C12N11/14
Inventor 陈宽黄雪敏陈勇何明军何晶晶
Owner ZHEJIANG WORLD CLEAN ENVIRONMENT ENG CO LTD
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