摘要
从对生物量和微生物耗氧速率的影响方面，考察了盐水、氨水、氯和氯胺等四种除蚤剂对活性炭上微生物的影响。小试结果表明，投加4种药剂虽使得活性炭上的生物量降低1～2个数量级，但基本上能维持在10^6数量级，即这种影响在可接受的范围之内；药剂对活性炭上微生物的活性具有抑制作用。选取盐水和氨水做对活性炭上微生物影响的生产性试验，结果表明：投加20g／L的盐水和10mg／L的氨水后，活性炭上的生物量降低了40％～60％，但都能维持在10^6数量级，因此认为药剂对活性炭上生物量的影响可以忽略不计；同时，微生物的活性随着过滤的进行而逐渐得到恢复，用盐水浸泡过的滤池需要5d的恢复时间，而用氨水浸泡的滤池只需2～3d。可见，采用盐水或氨水浸泡活性炭滤池来控制剑水蚤的生长是可行的。
The influences of dosing medicaments, such as brine, ammonia water, chlorine and ehloramines, on microorganisms of activated carbon were investigated by means of biomass and OUR. The bench-scale experimental results show that although all four medicaments can reduce the biomass by about one to two orders of magnitude, but the biomass still maintain at 10^6 orders of magnitude, i.e. this influence is still acceptable. The medicaments show inhibition on microorganisms of activated carbon. Therefore, the productive properties of the influence of brine and ammonia water on the microorganisms were reviewed. The full-scale experimental results indicate that after adding 20 g/L of brine and 10 mg/L of ammonia water, the biomass is reduced by 40% to 60%, but still is maintained at 106 orders of magnitude. So it can be concluded that the effects of medicaments on biomass can be ignored due to its inslgnifieanee. At the same time, the mlerobial activity can gradually recover during the filtration period. The recovery costs 5 days when the biological activated carbon filter is immersed by brine and only 2 to 3 days when immersed by ammonia water. Clearly, the application of brine or ammonia is feasible to control the growth of Cyclops.
出处
《中国给水排水》
CAS
CSCD
北大核心
2006年第21期22-25,共4页
China Water & Wastewater
基金
国家"十五"重大科技专项(2002AA601120)
