Ezperimental study on bio-contact ozidation method start-up at low temperature by two-stage method
Under the condition of 3～6℃ water temperature, twostage bio-membrane treatment is adopted to conduct the research of bio-membrane start-up experiment which uses bio-contact oxidation method to treat municipal sewage. The test ascertained the operating parameters for two stages respectively, namely the DO value of the first stage was 5-7mg/L,under which 20 days of intermittent water inflow was kept and hydraulic retention time was controlled in 24 hours;The second phase was under the DO value of 3～5mg/L, providing the continuous water inflow for 16 days and HRT within 12 hours. The results showed that after 36 days cultivation, the removal of COD, NH4+N and turbidity could achieve 72%、5%、 81% respectively. During the test, no carbon source was added, so did reflow. whats more, the operation was simple while the start-up time was short.Low temperature had small impact on the removal of COD and turbidity, but considerable influence on NH4+-N.When the temperature was below 5℃, the system had no obvious effect on the removal of NH4+-N. Some factors will do harm to the system at first,such as water quality fluctuation and air bubbles scouring.
Bio-contact ozidation municipal sewage low temperature start-up
Liu Xiaobo Ren Yilei Liu Junliang Dong Na Zhang Siruo
College of Urban & Rural Construction, Agriculture University of Hebei, Baoding 071001, China Beijing Agricultural Vocation College,Beijing 102442
国际会议
2009 Beijing International Environmental Technology Conference(2009北京国际环境技术会议暨第五届“中、德、波环境技术研讨会)
北京
英文
636-643
2009-10-16（万方平台首次上网日期，不代表论文的发表时间）