Occurrence, composition and ecological restoration of organic pollutants in water environment of South Canal, China

3rd International Conference on Water Resource and Environment

地球科学;生态环境科学

Wang, Y.Z.^1,2 ; Lin, C.^3 ; Zhou, X.S.^1 ; Zhang, Y.^4 ; Han, C.G.^4

Haihe River Water Environmental Monitoring Center, Tianjin

300170, China^1

Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Ministry of Education, Tianjin

300071, China^2

Haihe Water Resources Protection Bureau, Tianjin

300170, China^3

Zhangweinan Canal Management Bureau, Haihe River Water Conservancy Commission, Dezhou

253000, China^4

关键词: Biological degradation;    Degradation mechanism;    Ecological restoration;    Organophos-phorus pesticides;    Persistent organochlorine pesticides;    Polluted river waters;    Polycyclic aromatic hydrocarbons (PAHS);    Water-purifying agents;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/82/1/012033/pdf
DOI  :  10.1088/1755-1315/82/1/012033

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Ecological restoration of polluted river water was carried out in South Canal by adding microbial water purifying agents and biological compound enzymes. The objective of present study was to investigate the ecological restoration effect of organic pollutants by this efficient immobilized microbial technologies, analysis the occurrence and composition of organic pollutants including fifteen persistent organochlorine pesticides (OCPs), seventeen polycyclic aromatic hydrocarbons (PAHs) and eighteen organophosphorus pesticides (OPPs) both in natural water environment and ecological restoration area of South Canal, China. Results showed that the total concentrations of OCPs ranged from 1.11 to 1.78 ng•L-1, PAHs from 52.76 to 60.28 ng•L-1, and OPPs from 6.51 to 17.50 ng•L-1. Microbial water purifying agents and biological compound enzymes essentially had no effects on biological degradation of OCPs and PAHs in the river, but could remove OPPs with degradation rates ranging from 19.6% to 62.8% (35.2% in average). Degradation mechanisms of microbial water purifying agents and biological compound enzymes on OCPs, PAHs and OPPs remained to be further studied. This technology has a certain value in practical ecological restoration of organic pollutants in rivers and lakes.