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

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

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Abstract:

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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.

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Author:水利论文1xU:x'F;E,h2n)D*Bt

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Dongbin Wei水利论文_"[)}u%H R%I

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State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences,Beijing 100085, China水利论文 D V~0Y1t'Wym5]B

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环境科学学报(英文版)水利论文mD&m+@[3N

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Journal of Environmental Sciences

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8k?;Qr'kZ.~02011, 23(10)水利论文1^Jf7fJeR

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Keywords:水利论文"_H ^;S#|^)z){

R;x qX;jd I0biological safety水利论文 Y ^%C kh}Ow0@.F;w

E'f&KYE];^ ?e Q H0water quality index水利论文S0TOq`A$gg+W

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bioassay

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reclaimed water水利论文fd(\"^"[#a3O

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在线出版日期:水利论文 V*H ?{]|8sAx

Kzcn? T!~^02012年3月19日

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基金项目:水利论文,GK#z[8fD.a-wT

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the National High-Tech Research and Development Program (863) of China,the Crucial Special Project:National Water Pollution Control and Management Science,the National Natural Science Foundation of China水利论文@sI5q4n

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A biological safety evaluation on reclaimed water reused as scenic water using a bioassay battery水利论文*?7H,^6Llc

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[期刊论文] 环境科学学报(英文版)

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o:oTXEXiFd0--2011, 23(10)

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,`*UQ+}whQ[k0An 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...水利论文6l)W#]5{(Iv0dW [| bg C

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