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Compound microbial preparation for treating black and odorous rivers through strengthened calcium nitrate

A technology of composite microorganisms, black and odorous rivers, applied in the directions of microorganisms, microorganism-based methods, biological sludge treatment, etc., can solve the problems of shortening the treatment time of black and odorous, reducing the thickness of the sediment, and reducing the amount of calcium nitrate.

Inactive Publication Date: 2016-03-23
胡艳晖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In order to overcome the shortcomings of the prior art, the present invention provides a compound microbial preparation for strengthening calcium nitrate to control black and odorous rivers, specifically a volatile sulfide (AVS) that can quickly degrade the bottom mud, and can also In the anaerobic condition of the sediment layer, the nitrate is reduced to nitrogen, which solves the problem of secondary nitrogen release from the sediment, and can quickly reduce the thickness of the sediment, reduce the organic matter in the sediment and water body, and reduce the COD of the overlying water body. TP, TN, and can reduce the amount of calcium nitrate and shorten the time to control black and odor complex microbial agents

Method used

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  • Compound microbial preparation for treating black and odorous rivers through strengthened calcium nitrate
  • Compound microbial preparation for treating black and odorous rivers through strengthened calcium nitrate
  • Compound microbial preparation for treating black and odorous rivers through strengthened calcium nitrate

Examples

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Effect test

Embodiment 1

[0065] A compound microbial preparation for strengthening calcium nitrate to control black and odorous rivers, which is mainly prepared by mixing the following raw materials in parts by weight:

[0066] 50 parts of mixed bacterial powder of Thiobacillus denitrificans and Thiobacillus peach, 40 parts of compound bacterial powder of Bacillus, 10 parts of mixed bacterial powder of yeast and lactic acid bacteria;

[0067] Its preparation method comprises the following steps:

[0068] step : Preparation of mixed bacterial powder of Thiobacillus denitrificans and Thiobacillus peach

[0069] A. Activation culture of Thiobacillus denitrificans double-layer plate seeds: Streak the species of Thiobacillus denitrificans (ATCC25259) in the solid medium of Thiobacillus denitrificans in the lower layer, then pour a layer of agar medium on top, and culture at 30°C for 6 Days, when the bacterial line to be streaked grows a bacterial lawn, it can be used as an activated Thiobacillus denitri...

Embodiment 2

[0101] An in-situ treatment test case of an unnamed black and odorous river in Shawan Town, Panyu District, Guangzhou City:

[0102] There are industrial areas and living areas around the river channel, which receives a large amount of industrial wastewater and domestic sewage. A large amount of pollutants enter the channel, which seriously exceeds the self-purification capacity of the channel water body. A large amount of sediment is deposited, and the water body is in a black and smelly state all year round. Select a 100-meter-long river section in the river course, and cut off both sides. The composite microbial preparation of the present invention is used to carry out the in-situ remediation test of sediment. The area of ​​the river course is about 6 meters wide. Based on the calculation of the entire river course area of ​​600 square meters, the compound microbial agent per square meter is 8g / square meter. At the same time, the quality of calcium nitrate sprinkled is 10g...

Embodiment 3

[0110] Treatment effect of a river gushing water body in Shunde District by using compound microbial preparation

[0111]A river gushes in a living area in Shunde District, Foshan City. The river water is black and smelly all the year round. The COD exceeds the standard, and the ammonia nitrogen and total phosphorus exceed the standard seriously. The amount of bacterial injection is 5 grams per square meter, and calcium nitrate is 5 grams per square meter. After a week of testing, the results are shown in Table 3. After adding microbial preparations and calcium nitrate, there will be no black odor phenomenon after two days. After a week of reaction, the COD of the water body will drop significantly, from 190mg / L to 35.5mg / L, reaching The standards of the four types of water have been met, and the ammonia nitrogen and total phosphorus have also dropped significantly. Basically, the entire river has a clear water color, no black and odor phenomena, and the transparency of the wa...

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Abstract

The invention relates to a compound microbial preparation for treating black and odorous rivers through strengthened calcium nitrate and a preparation method thereof. The use amount of calcium nitrate is reduced, and the time for treating the black and odorous rivers is shortened. The compound microbial preparation is prepared from 40-80 parts of thiobacillus denitrificans and thiocapsa roseoppersicina mixed powder, 10-60 parts of composite bacillus subtilis powder and 10-60 parts of yeast and lactic acid bacterium mixed powder. By means of the preparation, sulfide in black and odorous bottom sludge, organic matter and strains suitable for growing in the black and odorous bottom sludge are screened and degraded in a targeted mode; by means of thiobacillus denitrificans with efficient hydrogen sulfide degrading and denitrification capacity, sulfur-oxidizing bacteria of thiocapsa roseoppersicina with efficient hydrogen sulfide and ammoniacal nitrogen degrading capacity, bacilli rich in protease, amylase, cellulose and other enzyme systems, yeast and lactic acid bacteria, a small amount of calcium nitrate and the compound microbial preparation are thrown into the black and odorous rivers so that water quality of the black and odorous rivers can be quickly improved, the black and odorous bottom sludge can be removed quickly, and the thickness and the organic matter content of the bottom sludge can be quickly reduced.

Description

technical field [0001] The invention relates to the technical field of treatment of black and odorous rivers, in particular to a compound microbial preparation capable of strengthening calcium nitrate to control black and odorous rivers, reducing the amount of calcium nitrate, shortening the time for controlling black and odorous rivers, and rapidly reducing sediment organic matter and a preparation method thereof. Background technique [0002] Black and odorous river channels and sediment accumulation are common phenomena in urban river networks in my country. Studies have shown that long-term anaerobic decomposition of organic pollutants in sediments produces odors such as hydrogen sulfide and non-ferrous metal sulfides such as iron sulfide. main components of the complex. NH3, H2S, etc. released during the degradation of organic matter containing sulfur and nitrogen can make the water black and smelly, which is the main cause of black and smelly. The secondary release of...

Claims

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Application Information

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IPC IPC(8): C12N1/20C12N1/16C02F3/34C02F11/04C12R1/85C12R1/07C12R1/01
CPCC12N1/20C02F3/348C02F11/04C02F2103/007C02F2209/08C02F2209/16C12N1/16
Inventor 胡艳晖其他发明人请求不公开姓名
Owner 胡艳晖
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