摘要
采用生物膜反应器处理人工配制生活污水,考察了反应器中可控因子溶解氧(DO)、污泥负荷(F/M)对系统污泥产率的影响。试验中分别考察了DO为1mg/L、3mg/L和5mg/L以及污泥负荷为0.3d-1、0.6d-1和0.9d-1时系统的污泥产率变化情况。根据试验结果发现,在相同污泥负荷条件下,随着生物膜反应器中DO的升高,污泥产率呈现降低的趋势;在同一个DO水平下,系统的污泥产率随着污泥负荷的升高而升高。以菌胶团内DO和基质浓度的分布示意图为基础,对DO和污泥负荷影响系统污泥产率的现象进行了理论分析。
Bio-film Technology was applied to treat synthetically domestic wastewater, and controllable ecological factors such as DO and F/M were studied to observe their influences on sludge yield. Under the conditions of DO lmg/L, 3mg/L, 5mg/L respectively and F/M 013 d^-1, 0.6 d^-1, 0.9 d^-1 respectively, it was found that the sludge yield in reactor decreased with the rise of DO. Whereas, the sludge yield varied in the same way with the variation of F/M. Based on the illustrative profile of DO and substrate concentration within a biological floc, the influence of DO and F/M on sludge yield was analyzed from the theoretical aspect.
出处
《市政技术》
2007年第1期38-41,共4页
Journal of Municipal Technology
