摘要
采用鞘丝藻处理城市污水,通过静态试验考察了氮磷比、藻类生物量、填料密度、藻细胞饥饿程度等因素对其去除水中NH4+-N和PO43--P的影响;采用推流式反应器进行动态试验,考察了附着藻类床对NH4+-N和PO43--P的去除效果。结果表明,当氮磷比为10∶1、填料密度为5 g/L、生物量为1 g/L、藻细胞饥饿2 d时,鞘丝藻对NH4+-N和PO43--P的去除效果较好;在HRT为3 d的条件下,附着藻类床对NH4+-N和PO43--P的平均去除率分别为85.9%和63.0%,出水DO浓度大为提高,电导率有所降低。
Lyngbya limnetica was used to treat the municipal wastewater. The effect of N/P ratio, algae biomass, filling density and hungry degree of algae cell on removal of NH4^＋- N and PO4^3 - - P from the wastewater was studied through static experiment. Dynamic trial was carried out by using plug-flow reactor, and the removal efficiencies of NH4^＋ - N and PO4^3- - P in attached algal bed were investigated. The result shows that Lyngbya limnetica can effectively remove NH4^＋- N and PO4^3 - - P when N/P ratio is 10 ： 1, filling density is 5 g/L, algae biomass is 1 g/L and algae cells are hungry for two days. The average removal rates of NH4^＋ - N and PO4^3- - P in attached algal bed are 85.9% and 63.0% respectively when HRT is 3 days. The effluent DO level is improved greatly and conductivity is declined obviously.
出处
《中国给水排水》
CAS
CSCD
北大核心
2007年第9期48-52,共5页
China Water & Wastewater
基金
山东省科委计划研究项目(03110014)
关键词
附着藻类床
城市污水
填料
鞘丝藻
attached algal bed
municipal wastewater
filling
Lyngbya limnetica
