文档介绍：第 7 卷第 9 期环境工程学报 Vol . 7 ,No . 9
2 0 1 3 年 9 月 Chinese Journal of Environmental Engineering Sep . 2 0 1 3
中置曝气生物活性炭工艺中的微絮凝
刘金翠陆少鸣
(华南理工大学环境科学与工程学院,广州 510006)
摘要利用新型炭滤-砂滤工艺对南方湿热地区微污染源水进行中试规模的微絮凝实验研究。结果表明,接触絮凝
时间为 2 ~ 5 min 时,投加 1. 0 mg /L 的 PAC 微絮凝效果最好。运行稳定后,砂滤器出水浊度≤0. 1 NTU,对 CODMn 的去除效
果有一定改善,微型水生生物的种类和数量也较炭滤器有大幅度下降,其中双层砂滤的效果优于单层粗砂,但其水头损失
增长较快。通过微絮凝,砂滤器对炭滤器反冲洗后初滤水能有较好处理效果,可有效简化运行工艺。同时可保证滤后水中
铝含量满足《生活饮用水卫生标准》的要求。
关键词微絮凝强化过滤中置曝气生物活性炭砂滤
中图分类号 X703 文献标识码 A 文章编号 1673-9108(2013)09-3461-05
Micro-ulation in mid-positioning aerated
biological activated carbon process
Liu Jincui Lu Shaoming
(College of Environmental Science & Engineering,South China University of Technology,Guangzhou 510006,China)
Abstract On the basis of new carbon-sand filtration process,a pilot test of micro-ulation was conduc-
ted for the micro-polluted raw water treatment in south moist heat areas. Results showed that the optimal dosage
of PAC is 1. 0 mg /L when the coagulation time is between 2 and 5 minutes. After its stable operation,the filter
effluent turbidity was reduced to be below 0. 1 NTU,the CODMn removal efficiency was also improved,and both
the anisms species and quantity in the sand filter effluent significantly decreased. The sand filter packed
with dual media was observed to be superior to the one with single coarse media,but its head loss increased more
quickly. Th