Method for quickly enriching phosphorus accumulating organisms (PAOs) in activated sludge

Abstract

The invention belongs to the technical field of biological sewage treatment, in particular relates to a method for quickly enriching phosphorus accumulating organisms (PAOs) in activated sludge. In the invention, a SBR (sequencing batch reactor) is used for successively inoculating aerobic phosphorus accumulating activated sludge of an aeration tank in an AAO (anaerobic-anoxic-aerobic) process and denitrifying phosphorus accumulating sludge of a pre-anoxic tank in a pre-concentration oxidation ditch process, denitrifying phosphorus accumulating organisms (DNPAOs) can fully utilize aerobically generated nitrate nitrogen for carrying out denitrifying phosphorus uptake, and simultaneously, the degradation of the nitrate nitrogen is favorable for anaerobic phosphorus release of aerobic PAOs. Compared with the traditional direct continuous culture method, the method provided by the invention can effectively shorten the enrichment time of the PAOs, thereby realizing the efficient and stable operation of an enhanced biological phosphorus removal (EBPR) system.

Description

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AI Technical Summary

Benefits of technology

The technical effect described in this patented technology allows for better control over how well fluids are treated during different stages (pH levels) based on their current values measured at various points along an industrial process's production line. This helps prevent damage caused by excessive amounts of harmful substances present within wastewater streams.

Problems solved by technology

This patents describes different methods for culturing microorganisms called Phytophagous Bacteroidesceae or Actinomyces spp., such as Acinetoheterostrobilium sp.) strains containing high levels of certain compounds like polygalloyimide (PGA), beta cyclodextrin sulfatase (BSA). These organism cells produce various substances involved during nutrient metabolizing processes, including ammonia gas, aliphatic carboxylic acid, alkenes, alcohol, etc.. By controllably increasing these chemicals from within their cycling state, they may enhance the activity of specific types of biosynthetic pathways related to phosphorous accumulation without consuming any more than what was previously possible due to lack of sufficient supply of substrate materials. Additionally, this technology allows researchers to quickly isolate phosphoryleatherbacillus species while maintaining them alive.

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