环境因子对BAC滤池中无脊椎动物生长的影响研究

Influence of Environmental Factors on Growth of Invertebrates in BAC Filter

于2006年10月—2007年9月,在南方某地区采用相同水源的两座水厂内研究了进水无脊椎动物密度、水温、反冲洗、活性炭类型等4种因子对生物活性炭滤池中无脊椎动物生长的影响。结果表明,进水中无脊椎动物的密度越高,则滤池上层水中无脊椎动物的生长繁殖数量越大,且微生物出现泄漏的可能性就越高;进水水温越高,则越有利于无脊椎动物的快速繁殖;反冲洗对滤池中无脊椎动物具有较好的去除作用,能够显著降低滤后水的微生物密度;活性炭类型对无脊椎动物的生长也具有重要影响,柱状炭滤池比破碎炭滤池易滋生更多的无脊椎动物,这对生物活性炭滤池中无脊椎动物的控制技术有着非常重要的意义。

The effects of tour factors including the density of invertebrates in the inflow water, water temperature, baekwashing and activated carbon type on the growth of invertebrates in BAC filter were studied in the period of Oct. 2006 to Sep. 2007. The results show that when the density of invertebrates in the inflow water is high, the growth rate of invertebrates in the upper water of the filter is high, and the leakage possibility of microorganisms is high. The high water temperature is favorable for the rapid breeding of invertebrates. The effect of backwashing is the reduction of invertebrates in BAC filtration, decreasing the density of microorganisms in the treatment effluent, Regarding to the effect of the type of activated carbon, it is found that the density of invertebrates growing in columnar carbon is higher than that in cracked carbon. The conclusions of the study are important ior the control technology of invertebrates in BAC filter.