【摘要】 本研究采用小试规模的生物膜反应器考察了生物预处理对富营养化的青甸湖水的处理效果:1)生物陶粒预处理对青甸湖水有一定的净化效果,对COD_Mn、浊度、色度及嗅阈值的去除率分别为25.0％、67.7％33.7％和50.0％,对氨氮的去除率则超过80.0％,而对藻类的去除率则随着藻种的不同而不同,其平均去除率为50.0％。2)在1～4m/h的滤速范围内,滤速对COD_Mn、NH₄^—N、色度和浊度去除效率基本没有影响。3)生物陶粒柱的反冲频率为每周一次。更多还原

【Abstract】 Laboratory scale biofilm reactor was used in this study to investigate the biological pretreatment of the eutrophic water of Qingdian Lake. The primary results are as follows : 1) Bio-ceramic pretreatment is effective to some extent for treating the Qingdian Lake water. The removal efficient of CODMn、 NH4 -N, turbidity, color and TON are 25. 0%, 67. 7%, 33. 7 and 50. 0% respectively. while for NH4 -N, it is over 80%. Although it changes with various kinds of algae, the average removal rate of the total number of algae is about 50. 0%. 2) Filtrating rate has little effect on the removal efficiency when it ranges from Im/h to 4m/h. 3) The backwashing frequency of bio-ceramic filter is one time per week.更多还原