A biological safety evaluation on reclaimed water reused as scenic water using a bioassay battery  

作　　者：Dongbin Wei Zhuowei Tan Yuguo Du 

机构地区：[1]State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China

出　　处：《Journal of Environmental Sciences》2011年第10期1611-1618,共8页环境科学学报（英文版）

基　　金：supported by the National High-Tech Research and Development Program (863) of China (No. 2008AA062502,2009AA063901);the Crucial Special Project:National Water Pollution Control and Management Science (No. 2008ZX07314-003: 008);the National Natural Science Foundation of China (No. 20877090,50938004)

摘　　要：An assessment method based on three toxicity tests （algae growth inhibition, daphnia immobilization and larval fish toxicity） was used to screen the biological safety of reclaimed water which was reused as sole replenishment for scenic water system in a park （SOF Park） in northern China. A total of 24 water samples were collected from six sites of water system in the SOF Park in four different seasons. The results indicated that： （1） the reclaimed water directly discharged from a reclamation treatment plant near the SOF Park as influent of park had relatively low biological safety （all samples were ranked as C or D）; （2） the biological safety of reclaimed water was improved greatly with the ecological reclamation treatment processes composing of artificial wetland system and followed oxidation pond system; （3） the biological safety of reclaimed water in the main lake of SOF Park kept at a health status during different seasons （all samples were ranked as A）; （4） there was some certain correlation （R2= 0.5737） between the sum of toxicity scores and dissolved organic carbon for the studied water samples. It was concluded that the assessment method was reliable to screen the safety of reclaimed water reused as scenic water, and the reclaimed water with further ecological purification processes such as artificial wetland and oxidation pond system can be safely reused as scenic water in park.An assessment method based on three toxicity tests （algae growth inhibition, daphnia immobilization and larval fish toxicity） was used to screen the biological safety of reclaimed water which was reused as sole replenishment for scenic water system in a park （SOF Park） in northern China. A total of 24 water samples were collected from six sites of water system in the SOF Park in four different seasons. The results indicated that： （1） the reclaimed water directly discharged from a reclamation treatment plant near the SOF Park as influent of park had relatively low biological safety （all samples were ranked as C or D）; （2） the biological safety of reclaimed water was improved greatly with the ecological reclamation treatment processes composing of artificial wetland system and followed oxidation pond system; （3） the biological safety of reclaimed water in the main lake of SOF Park kept at a health status during different seasons （all samples were ranked as A）; （4） there was some certain correlation （R2= 0.5737） between the sum of toxicity scores and dissolved organic carbon for the studied water samples. It was concluded that the assessment method was reliable to screen the safety of reclaimed water reused as scenic water, and the reclaimed water with further ecological purification processes such as artificial wetland and oxidation pond system can be safely reused as scenic water in park.

关 键 词：biological safety water quality index BIOASSAY reclaimed water 

分 类 号：X703[环境科学与工程—环境工程] S859.797[农业科学—临床兽医学]