Experimental Research on Enhanced Denitrification by Biological Agents

Xiaoyu Liu,Ruozheng Li,Can Wang,Zhengkun Li,T.Y Fang,V Khaletski

doi:10.1051/e3sconf/201913607022

Abstract

Biological agents play a significant role in sewage treatment, with good removal effect, low sludge yield, good performance, and shorten the system start-up time, impact load resistance and stability enhancement.This paper describes the characteristics ofbiological agents and the effect of biological agents on wastewater denitrification was investigated through experiments, so as to provide effective basis support for the wide application of biological agents in the field of urban sewage treatment.The experiment showed that through reasonable addition of biological agents,the removal rates of COD,NH3-N and TNinlowpollutantsewage treatmentwere increased by 41%, 15% and 62% respectively.

Highlights

This study adopts BiOWiSH TM technology which creates a composite biocatalyst from a unique blend of microorganisms, enzymes, and co-factors
Biological agents are bacterial liquid agents selected from the nature with specific degradation functions
By investigating the removal rates of COD, NH3-N and TN, this paper studies whether biological agents have positive effects on sewage treatment, especially on denitrification

Summary

Biological agents and biofortification techniques

With the increase of environmental protection requirements and the continuous development of environmental biotechnology, bioremediation, as a water pollution treatment technology with low investment, high efficiency, convenient operation and flexibility, has been gradually developed and applied in projects, and is gradually being widely valued and applied worldwide. Bioaugmentation presents a quick and cost effective way to solve wastewater treatment problems that would traditionally be solved with expensive capital enhancements[1,2]. This study adopts BiOWiSH TM technology which creates a composite biocatalyst from a unique blend of microorganisms, enzymes, and co-factors. This composite biocatalyst enhances biochemical reactions in wastewater treatment plants, enabling the process to work faster and more efficiently than native biological organisms alone. BiOWiSHTM biocatalysts coexist with existing wastewater biology to enhance their rate of reaction, resulting in a more efficient biological treatment process[3]

Advantages of biological agents in the application of municipal sewage

The experiment purpose

Experimental materials and methods

Findings

Experimental methods