A biological process was adopted in a groundwater plant for iron and manganese removal. The process included low-level aeration and single stage biological filtration. The separated native iron and manganese oxidizing bacteria were inoculated to the filter bed alongside raw water containing high concentrations of iron and manganese after multiplication (Fe2 + 10–14 mg l−1, Mn2 + 0.65–1.1 mg l−1). The predominance of iron and manganese oxidizing bacteria were maintained in the filter by appropriately monitoring the operational parameters (filtration rate, backwash intensity, backwash duration and backwash period). Then the filter had a significant and stable ability for iron and manganese removal. The quality of the filtrate met the Chinese National Standard for Drinking Water with concentrations of 0.05–0.1 mg l−1 Total-Fe (T-Fe) and 0.05 mg l−1 Total-Mn (T-Mn) under the condition of the normal filtration rate (5–7 m h−1). The process reduced investment costs by 6 million yuans (¥) and power costs by 250 thousand yuans (¥) per year compared with the traditional process (chemistry-contact oxidation including two-stage aeration and two-stage filtration).
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August 2006
This article was originally published in
Journal of Water Supply: Research and Technology-Aqua
Article Contents
Research Article|
August 01 2006
Application of biological process to treat the groundwater with high concentration of iron and manganese Available to Purchase
Dong Li;
1Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China E-mail: [email protected]; [email protected]; hongtao [email protected]; [email protected]
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Jie Zhang;
Jie Zhang
2Department of Municipal and Environmental Engineering,Harbin Institute of Technology, Harbin 150090, China E-mail: [email protected]
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Hongtao Wang;
Hongtao Wang
1Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China E-mail: [email protected]; [email protected]; hongtao [email protected]; [email protected]
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Lixue Chen;
Lixue Chen
2Department of Municipal and Environmental Engineering,Harbin Institute of Technology, Harbin 150090, China E-mail: [email protected]
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Hao Wang
Hao Wang
1Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China E-mail: [email protected]; [email protected]; hongtao [email protected]; [email protected]
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Journal of Water Supply: Research and Technology-Aqua (2006) 55 (5): 313–320.
Article history
Received:
August 03 2005
Accepted:
March 06 2006
Citation
Dong Li, Jie Zhang, Hongtao Wang, Lixue Chen, Hao Wang; Application of biological process to treat the groundwater with high concentration of iron and manganese. Journal of Water Supply: Research and Technology-Aqua 1 August 2006; 55 (5): 313–320. doi: https://doi.org/10.2166/aqua.2006.014
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