DENG Jing-xuan,ZHOU Run-jie,SHAN Xiao-hong,et al.Biomass Substrate Carrying Bacteria for Treatment of Micro-polluted River Water[J].China Water & Wastewater,2021,37(11 11):1-8.
Biomass Substrate Carrying Bacteria for Treatment of Micro-polluted River Water
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
11 11
Page:
1-8
Column:
Date of publication:
2021-06-01
- Keywords:
- heterotrophic nitrification; biomass substrate; volcanic rock; treatment of micro-polluted water; constructed wetland
- Abstract:
- For micro-polluted river water, heterotrophic nitrifying bacteria Pseudomonas was immobilized in the biomass substrate made from the waste of agricultural and forestry straw biomass power generation. The treatment effect of biomass substrate carrying bacteria on micro-polluted river water was investigated by constructed wetland device, and compared with volcanic rock. The microbial community of biofilm was analyzed by high-throughput sequencing technology. And then biomass substrate carrying bacteria was used in river purification project. The results showed that the removal rates of COD, NH4+-N and TP of influent water with biomass substrate carrying bacteria were 81.0%, 98.2% and 96.7% respectively, and the removal rate of pollutants and stability were better than those of volcanic rocks. In the microbial community structure, Alphaproteobacteria(36%) and Pseudomonas (13%) were dominant in biomass substrate, which indicated that biomass substrate carrying Pseudomonas had a greater advantage in nitrogen removal. The bacteria-carrying biomass substrate was applied in the treatment project of urban rivers with a treatment capacity of 150 m3/d. COD, NH4+-N and TP in the tail water of the traditional AO proces could be further removed stably by biomass substrate carrying bacteria. The water quality of the main river met the class Ⅳ surface water standard, and the proportion of Pseudomonas carried by the biomass substrate still accounted for 0.65%.
Last Update:
2021-06-01