摘要
通过延长浮床生态系统的食物链和强化浮床的微生物富集特性,构筑了以水生植物、水生动物及微生物生态系统为主体的组合生态浮床,考察了其对富营养化水源水质的改善效果。研究表明,当水体交换时间为7d、水力负荷为1.85m3/(m2.d)时,组合生态浮床对TN、TP、TOC、Chl-a的平均去除率分别为52.7%、54.5%、49.2%、80.2%,相应的去除负荷分别为4.03、0.79、0.49g/(m2.d)和25.31mg/(m2.d);对总藻毒素和胞外藻毒素的去除率分别为77.4%和68%。可见,该组合生态浮床是改善富营养化水源水质的有效方法。
By lengthening food chain of floating bed ecosystem and strengthening characteristic of microbial enrichment on the bed, a combined ecological floating bed using hydrophyte, aquatic animal and microbial ecosystem as main body was constructed, and the improvement effect of eutrophic source water quality was investigated. The results show that when the water exchange period is 7 d and the hydraulic loading rate is 1.85 m^3/（m^2 ·d）, the removal efficiencies of TN, TP, TOC and Chl-a are 52.7% , 54.5% , 49.2% and 80.2% respectively. The removal loading rates are 4.03 g/（m^2 · d） , 0.79 g/（m^2 · d）, 0.49 g/（m^2 · d） and 25.31 mg/（m^2 · d）. Moreover, the removal efficiencies of total microcystin （TMC） and extracellular microcystin （EMC） are 77.4% and 68% respectively. It is obvious that the combined ecological floating bed is an effective method for improving eutrophic source water quality.
出处
《中国给水排水》
CAS
CSCD
北大核心
2008年第3期34-38,共5页
China Water & Wastewater
基金
国家高技术研究发展计划(863)项目(2002AA601011-03)
关键词
生态浮床
富营养化
食物链
水生植物
水生动物
人工介质
藻毒素
ecological floating bed
eutrophication
food chain
hydrophyte
aquatic animal
artificial media
microcystin
