中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
A novel integrated step-feed biofilm process for the treatment of decentralized domestic wastewater in rural areas of China

文献类型:期刊论文

作者Wei, Yuansong; Liang, Hanwen; Gao, Min; Liu, Junxin; Guo, Xuesong
刊名JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
出版日期2010
卷号22期号:3页码:321-327
关键词Step-feed Biofilm Removal Efficiency Pcr-dgge C/n Ratio
英文摘要For wastewater treatment in rural areas, a novel three-stage step-feed wastewater treatment system, combined with a drop-aeration biofilm process, was tested in the laboratory to investigate its performance in removing suspended solids (SS), chemical oxygen demand (COD), NH(4)(+)-N, total nitrogen (TN), and total phosphorus (TP). The removal rates of SS, COD and NH(4)(+)-N were 90%, 80%, and 90% in effluent concentrations less than 10 mg/L, 50 mg/L and 8 mg/L, respectively. The TP removal rate was less satisfactory. The C/N ratio in the raw wastewater was often less than 3.5, and the removal efficiency of TN was therefore limited. A carbon-release batch experiment was carried out to measure the feasibility of enhancing denitrification at low influent C/N ratios. The result showed that the C/N could be over 9.0 in the supernatant. Polymerase chain reaction denaturing gradient gel electrophoresis technology was used to reveal the changes in the bacterial community during different stages of the integrated step-feed biofilm process. The results showed that banding patterns and the distribution of dominant bands for the same experimental period in different aerobic zones were similar. Phylogenetic analysis indicated that lanes 10, 11 and 12, which presented three aerobic zones at the same operation period, had the closest phylogenetic relationship among the lanes.
WOS记录号WOS:000275883400001
源URL[http://ir.rcees.ac.cn/handle/311016/21309]  
专题生态环境研究中心_水污染控制实验室
推荐引用方式
GB/T 7714
Wei, Yuansong,Liang, Hanwen,Gao, Min,et al. A novel integrated step-feed biofilm process for the treatment of decentralized domestic wastewater in rural areas of China[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2010,22(3):321-327.
APA Wei, Yuansong,Liang, Hanwen,Gao, Min,Liu, Junxin,&Guo, Xuesong.(2010).A novel integrated step-feed biofilm process for the treatment of decentralized domestic wastewater in rural areas of China.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,22(3),321-327.
MLA Wei, Yuansong,et al."A novel integrated step-feed biofilm process for the treatment of decentralized domestic wastewater in rural areas of China".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 22.3(2010):321-327.

入库方式: OAI收割

来源:生态环境研究中心

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。