Toxicity-based assessment of the treatment performance of wastewater treatment and reclamation processes
文献类型：期刊论文
| 作者 | Wei, Dongbin ; Tan, Zhuowei ; Du, Yuguo |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2012 |
| 卷号 | 24期号:6页码:969－978 |
| 关键词 | wastewater reclamation acute toxicity genotoxicity toxicity assessment |
| ISSN号 | 1001-0742 |
| 中文摘要 | The reclamation and reuse of wastewater is one of the possible ways to relieve the serious fresh water resource crisis in China. Efficient reclamation treatment technologies ensure the safe reuse of reclaimed water. In order to screen out and evaluate technologies appropriate for reclamation treatment, a great deal of efforts have been brought to bear. In the present study, a toxicity-based method including a Photobacterium phosphoreum test for acute toxicity and SOS/umu test for genotoxicity, accompanied by the traditional physicochemical parameters DOC (dissolved organic carbon) and UV254 (absorbance at 254 nm), was used to measure the treatment performance of different reclamation processes, including the anaerobic-anoxic-oxic biological process (A(2)O) and subsequent physical/chemical reclamation processes (ultrafiltration, ozonation, chlorination). It was found that for the secondary effluent after the A(2)O process, both the toxicity and physicochemical indices had greatly decreased compared with those of the influent. However, chemical reclamation processes such as ozonation and chlorination could possibly raise toxicity levels again. Fortunately, the toxicity elevation could be avoided by optimizing the ozone dosage and using activated carbon after ozonation. It was noted that by increasing the ozone dosage to 10 mg/L and employing activated carbon with more than 10 min hydraulic retention time, toxicity elevation was controlled. Furthermore, it was shown that pre-ozonation before activated carbon and chlorination played an important role in removing organic compounds and reducing the toxicity formation potential. The toxicity test could serve as a valuable tool to evaluate the performance of reclamation processes. |
| WOS记录号 | WOS:000305316700001 |
| 公开日期 | 2014-11-04 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7784]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Wei, Dongbin,Tan, Zhuowei,Du, Yuguo. Toxicity-based assessment of the treatment performance of wastewater treatment and reclamation processes[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2012,24(6):969－978. |
| APA | Wei, Dongbin,Tan, Zhuowei,&Du, Yuguo.(2012).Toxicity-based assessment of the treatment performance of wastewater treatment and reclamation processes.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,24(6),969－978. |
| MLA | Wei, Dongbin,et al."Toxicity-based assessment of the treatment performance of wastewater treatment and reclamation processes".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 24.6(2012):969－978. |
入库方式： OAI收割
来源：生态环境研究中心
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