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作者:

Wang, Chun-Rong (Wang, Chun-Rong.) | Li, Jun (Li, Jun.) | Wang, Bao-Zhen (Wang, Bao-Zhen.) | Zhang, Guo-Zhu (Zhang, Guo-Zhu.)

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摘要:

Two-stage biological aerated filter was used for domestic wastewater treatment. The hydraulic loading rate of A-stage limited to 9.17 m3/(m2·d), 15.59 m3/(m2·d) and 22.01 m3/(m2·d) respectively and the ratio of air to water was 6 to 1, while the mtio of air to water was 2 to 1 at B-stage, and temperature was kept in the range of 18-20°C throughout the experiment. After 3-month operation, the result shows that stable and advanced effluent with the results of sCOD 3-N < 4.0 mg/L, SS < 10 mg/L at steady state has been abtained, and the chlorinated effluent well meets the quality standards of water reused for toilet flushing, street flushing, fire fighting and urban greening; Meanwhile, the sCOD, ammonium, total nitrogen and total phosphorous of the effluant also has been kept at lower level under the condition of non-steady state such as loading rate adjustment or backwashing. Moreover, it is to maintain a stable operation of the BAF system, pre-treatment, suitable backwashing rate and good start-up conditions are quite necessary.

关键词:

Wastewater treatment Hydraulics Roads and streets Effluents Temperature Removal Nitrogen

作者机构:

  • [ 1 ] [Wang, Chun-Rong]School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, China
  • [ 2 ] [Li, Jun]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China
  • [ 3 ] [Wang, Bao-Zhen]Water Pollution Control Research Center, Harbin Institute of Technology, Harbin 150090, China
  • [ 4 ] [Zhang, Guo-Zhu]Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China

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来源 :

Journal of Beijing University of Technology

ISSN: 0254-0037

年份: 2006

期: 12

卷: 32

页码: 1071-1076

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