摘要
目的研究MLSS的变化对MBR的生物处理效果和膜污染的影响，从处理效果和处理能力上综合考虑，找出最适宜的污泥质量浓度范围．为实际应用提供实验依据．方法采用动态连续进水连续出水，调节适当的pH值、在常温条件下，研究了MLSS的变化对有机物、NH3-N和TN的去除效果以及对膜污染的影响．结果经过70d的运行．污泥质量浓度从实验初期的2．428g／L增加到5．2g／L．MLSS在3．927～5．2g／L之间时，上清液COD、NH3-N和TN的平均去除率分别达到87．76％、90．82％和67．54％；出水COD、NH3-N和TN的去除率达到95．85％、97．38％和81．86％．MLSS和膜过滤阻力之间存在一定的相关性．随着污泥质量浓度的增大。膜过滤阻力增大．结论MLSS为4～5g/L，去除效果良好，系统运行稳定．
The experiment investigates the influence of MBR by the change of MLSS from handling effect of COD, NH3 - N, TN and variations of membrane filterable resistance. After 70d, MLSS is from 2. 428 g/L to 5.2 g/L. When MISS is between 3. 819 g/L and 5.2 g/L, the excision rate of COD, NH3 - N and TN attain 87.76%, 90.82% and 67.54% in the upper liquid. The excision rate of COD, NH3- N and TN of flowing water attain 95.85 %, 97.38 % and 81.86 %. It is good to removal efficiency. The system runs stably. MLSS existences certain correlation with membrane filterable resistance. Membrane filterable resistance increases with MLSS. The most suitable MLSS scope is 4-5 g/L for this experiment.
出处
《沈阳建筑大学学报（自然科学版）》
CAS
2006年第5期825-828,共4页
Journal of Shenyang Jianzhu University：Natural Science
基金
辽宁省自然科学基金(20022007)
关键词
膜生物反应器
污泥浓度
生活污水
膜过滤阻力
生物降解
membrane bioreactor
MLSS
swage
membrane filterable resistance
biological degradation
