Yeast and application thereof in the weak alkaline treatment of vegetable-pickling waste water

Abstract

The invention provides a Candida thaimueangensis G70 with the conservation number of CGMCC No.3000 and capable of subjecting vegetable-pickling waste water to the weak alkaline treatment, and a methodfor the weak alkaline treatment of the vegetable-pickling waste water by using the strain. The Candida thaimueangensis G70 (CGMCC No.3000) is a strain which has strong salinity resistance and wide pHgrowth scope as well as which can rise pH of the vegetable-pickling waste water from acidity to weak alkalinity and remove partial COD of the waste water in a very short time, thus greatly reducing treatment cost of the vegetable-pickling waste water; the strain has simple culture method, fast growth speed and easiness for sedimentation and can be used for the weak alkaline treatment of vegetable-pickling waste water. The strain has preferable application prospect in the treatment of vegetable-pickling waste water.

Description

A kind of yeast and its application in weak alkaline treatment of vegetable pickling wastewater technical field The invention belongs to the technical field of environmental microorganisms, and in particular relates to a Candida strain G70 (Candidathaimuueangensis) with a preservation number of CGMCC No. 3000. The invention also relates to the use of Candida bacterium G70 (Candidathaimuueangensis) in the treatment of vegetable pickling wastewater. Background technique Pickled vegetables have an irreplaceable position in the diet of Chinese people, and have been spread for a long time and widely. With the development of industrialization, the pickled vegetable industry has made great progress, and there are a batch of products that sell well all over the country, such as mustard mustard and Northeast pickled vegetables; and the expansion of the industrial scale has made the pickled vegetable industry a pillar in some places. Industry, the mustard mustard industry chain in ...

AI Technical Summary

Problems solved by technology

However, since the vegetable pickling wastewater contains more organic acids, the wastewater is acidic and the pH fluctuates greatly, which is not conducive to the growth of halophilic (resistant) bacteria, making the microbial treatment system unable to operate stably and effectively

At present, the pH of vegetable pickling wastewater is generally adjusted by adding chemical agents, but this method has the following two problems: one is high cost, because vegetable pickling wastewater contains more organic acids, and the acidity is high, so it needs to be added Only a large amount of chemicals can adjust the pH of wastewater to neutrality; the second is that additional pollution is generated. The extensive use of chemical agents not only increases the amount of pollutants in wastewater, but also produces a large amount of sludge. If the sludge is not handled properly, it will cause Secondary pollution

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