A kind of anti-high temperature floc producing strain and its cultivation and application method

Abstract

The invention relates to a high-temperature-resistant flocculant-producing bacterial strain, and cultivation and application methods thereof, and belongs to the field of microbiology. The high-temperature-resistant flocculant-producing bacterial strain is preserved by China General Microbiological Culture Collection Center (CGMCC), wherein the preservation number is CGMCC No.2040; the classification and nomenclature is Paenibacillus sp.; the preservation date is May 11, 2007. High-temperature-resistant paenibacillus screened from soil of fruit trees is a new bacterium which is discovered in China for the first time; the high-temperature-resistant paenibacillus is heated at a high temperature of 40 to 80 DEG C for 5 to 60 minutes and then is subjected to aerated fermentation culture at 25 to 35 DEG C; when the fermentation liquid is applied to kaolin suspension flocculant, the flocculation ratio is 88% to 97% when the proportion is 0.01% to 0.2% (v / v). When the paenibacillus provided by the invention and the fermentation liquid thereof are applied to the kaolin suspension flocculant, the culture operating process is simple and convenient, the cost is low, the flocculation activity is high, the using amount is small and secondary pollution is avoided.

Description

technical field [0001] The invention belongs to the field of microbiology, and particularly relates to a high-temperature-resistant flocculation-producing strain and a cultivation and application method thereof. Background technique [0002] Flocculant, also known as settling agent, is a kind of substance that can coagulate and precipitate solid suspended particles that are not easy to settle in liquid. Flocculation technology is widely used in water supply, wastewater treatment and sludge dehydration. It is an effective way to improve water treatment efficiency. An economical and simple treatment method, the flocculation effect often determines the operation status of the subsequent process, the final effluent water quality and cost. In the process of flocculation treatment, the type, nature and variety of flocculant directly affect the treatment effect, so flocculant is the core of water treatment by flocculation method. [0003] The currently used flocculants can be divi...

AI Technical Summary

Problems solved by technology

Most of them are bacterial strains such as Paenibacillus polymyxa, Paenibacillus terrae and their microbial preparations applied to the prevention and control of plant diseases and insect pests in the agricultural field; Paenibacillus polymyxa and Paenibacillus colloid are used to produce microbial fertilizers to achieve Recycling of sludge, or for the preparation of exopolysaccharides to obtain exopolysaccharides and live microbial preparations, etc., but there are few studies on the application of Paenibacillus as a flocculant in water treatment

At the same time, in the fermentation and purification process of microbial flocculant, there are also problems such as complicated operation, large amount of flocculant, and low flocculation rate.

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