Effect of Charcoal Media for the Treatment of Wastewater in a Biological Filter
Charcoal was applied as the media of biological filters to treat wastewater. The performance of two lab-scale biological filters was monitored for five months to compare the effect of charcoal with that of haydite as media. Charcoal biological filter and haydite biological filter showed excellent removals for COD under the conditions of DO 2-3 mg/L, COD loading rate 0.7～1.5kgCOD/m3-filter-bed-d, HRT 1.6-3.2 h. In terms of removing ammonia nitrogen, the performance of the charcoal biological filter was superior to that of haydite. Under the conditions of DO 2-3 mg/L, NH4+-N loading rate 0.08～0.1kg NH4 +-N/m3-filter-bed-d, the effluent NH4 +-N of Charcoal biological filter and haydite biological filter was in the range of 2.3-8.3 mg/L and 16.8-25.2 mg/L, respectively. This demonstrates that charcoal surface is more adaptive to growth of nitrobacteria and more nitrobacteria are concentrated on the charcoal surface. As a result, the nitrification ability of charcoal biological is enhanced.
Biological filter Charcoal Haydite COD NH4+-N
Aijiao Zhou Tao Tao Zhaohui Bian Yong Zhang
Department of Environmental Science & Engineering Huazhong University of Science and Technology, Luo Wuhan City Water Construction Engineering Company Wuhan Water Works Company, Tianmendun Road 1037＃,
国际会议
上海
英文
3203-3206
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）