Pseudomonas Y1 with efficient heterotrophic nitrification and aerobic denitrification functions and embedded pellets and application thereof

Abstract

The invention discloses pseudomonas Y1 with efficient heterotrophic nitrification and aerobic denitrification functions and embedded pellets and application thereof. The pseudomonas Y1 with the efficient heterotrophic nitrification and aerobic denitrification functions is classified and named as pseudomonas Y1, the preservation unit is China Center for Type Culture Collection, the preservation place is Wuhan University, China, the preservation date is September 01, 2021, and the preservation number is CCTCC NO: M20211119. According to the invention, the pseudomonas Y1 screened from activated sludge of an aeration tank of a sewage plant is subjected to hypotrophic domestication and embedding immobilization, and is combined with emergent aquatic plants, so that a hypotrophic micro-polluted water body with low chemical oxygen demand can be effectively treated, as microorganisms are embedded and immobilized, no residual sludge is generated, and the treatment cost is greatly reduced. According to the invention, nitrogen in the landscape water body can be removed under the conditions of low chemical oxygen demand and no use of a physical and chemical method and activated sludge, and the standard of surface water IV type and above water bodies is met.

Description

technical field [0001] The invention relates to the technical field of denitrification and purification, in particular to a Pseudomonas Y1 with efficient heterotrophic nitrification and aerobic denitrification function, its embedded pellets and its application. Background technique [0002] Although the eutrophic landscape water bodies in many cities in my country have far exceeded the standard of the fifth category of surface water, their TN and COD contents are still lower than those of domestic sewage, so the treatment methods are very limited. At present, the treatment methods of urban eutrophic landscape water body include physical method, physical and chemical method, biochemical method and bioremediation method. The main principle of the purification process of physical method is transfer and dilution, and the structure and properties of nitrogen in the water body have not changed; Treatment methods include coagulation and air flotation, etc.; biochemical treatment ma...

AI Technical Summary

Problems solved by technology

However, there are obvious defects in the biological treatment process at this stage. For example, the nitrification and denitrification in the traditional denitrification process need to be carried out in an aerobic and anoxic environment respectively. Different oxygen environments; in addition, the chemical oxygen demand and nitrogen content in urban eutrophic landscape water bodies are low, and it is difficult for microorganisms to obtain sufficient nutrition to survive; at the same time, the area of ​​urban eutrophic landscape water bodies is large, and microorganisms are easy to lose in water bodies, and it is difficult to The formation of dominant bacterial species leads to low nitrogen degradation efficiency in water bodies; therefore, there is a need for a cost-effective microbial and systematic method that can purify nitrogen in urban eutrophic landscape water bodies using biointensified processes under the same oxygen environment

Images