Quick start-up and filter speed searching of biological iron and manganese removal process
LI Dong1, LU Jian1, LIANG Yu-wen1, ZHANG Jie1,2, ZHAO Yun-xin1
1. Department of Municipal Engineering, Beijing University of Technology, Beijing 10024, China;
2. Department of Municipal Engineering, Harbin Institute of Technology, Harbin 150090, China
A pilot-scale biological filter was constructed to removal of iron and manganese simultaneously from groundwater. The results indicated that adjusting process parameters appropriately can realize rapid enrichment of iron and manganese oxidizing microorganisms and quick start-up of biological iron and manganese removal for the water incuding high iron and manganese at low tempreture (5~6℃) in 120d; During the process, The thickness of filter layer is optimized, and the result is that effluent water may be overproof when thickness of filter bed is 1500mm, and it will be standard if thickness of mature filter bed is 800mm when the filtering speed is 6~8m/h; Under this contition, the highest filtering speed is 16.5m/h and relevant backlashing parameter is clear.
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