Several strains of bacteria that can be used to monitor biodegradable organic matter and microbial contamination in water

Abstract

The invention relates to several strains of bacteria used for monitoring biodegradable organic matter and microbial pollution in water. These strains of bacteria were isolated from the activated sludge of the secondary sedimentation tank of the domestic sewage treatment plant, and the numbers were AS1, AS2, AS3, AS4, AS5, AS6, AS7. These strains of bacteria were isolated and screened from activated sludge after domestication and cultivation in acetic acid carbon solution. These screened strains can be applied to the determination of assimilable organic carbon (Assimilable Organic Carbon, AOC) in surface water, groundwater and slightly polluted water. Compared with the existing model strains P17 and NOX, the substrate spectrum is wider, and a wider range of AOC can be used, the growth speed is faster, the required culture time is shorter, and the measurement results are more accurate.

Description

technical field [0001] The invention relates to several strains of bacteria isolated from domestic sludge after domestication and cultivation, which can be applied to the monitoring of biodegradable organic matter and microbial pollution in water, and belongs to the field of microbiology and environmental monitoring. Background technique [0002] In recent years, due to frequent pollution accidents and normal pollution of source water, my country's drinking water safety is facing severe challenges. In this situation, the early warning of the risk of microbial contamination of drinking water is particularly important. When the assimilable organic carbon (Assimilable Organic Carbon, AOC) contained in the water body exceeds a certain concentration, it will lead to the excessive growth of microorganisms, which will lead to microbial pollution accidents. Therefore, AOC is an important indicator in water quality monitoring, and indirectly reflects the risk of microbial pollution ...

AI Technical Summary

Problems solved by technology

Currently, P17 and NOX are commonly used to measure AOC in water samples. NOX grows slowly, and P17 and NOX must be counted separately, which makes the whole detection process time-consuming, and the obtained results are difficult to play a guiding role in water quality monitoring risk warning.

Since there are only two strains, the substrate spectrum is limited, and various AOCs in the water sample cannot be fully utilized, resulting in inaccurate determination results.

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