利用蠕虫实现自生动态膜生物反应器污泥减量研究  

Study on Sludge Reduction in Self-forming Dynamic Membrane Bioreactor by Oligochaete

作　　者：刘宏波[1] 杨昌柱[1] 濮文虹[1] 郑燕琼[1] 邹荣珍[1] 

机构地区：[1]华中科技大学环境科学与工程学院,湖北武汉430074

出　　处：《中国给水排水》2007年第5期5-9,共5页China Water & Wastewater

基　　金：国家高技术研究发展计划(863)项目(2003AA601110)

摘　　要：将自生动态膜生物反应器与生态调控技术相结合，以达到减少污泥产量的目的。试验结果表明，在有蠕虫存在的情况下，反应器内的污泥浓度一直维持在4000mg／L左右，不仅实现了剩余污泥的零排放，而且改善了其沉降性能，同时膜污染也得到了有效缓解，其清洗周期由原来的4～5d延长至1个月左右，保证了出水水质的稳定性；蠕虫的存在对COD、NH3-N的去除没有明显的影响，但不利于对TP的去除，且浊度的去除也受蠕虫密度的影响。当温度、pH等条件适宜时，影响蠕虫生长的主要因素有溶解氧、反应器内部结构、污泥浓度等，其中溶解氧是影响蠕虫生长与繁殖的关键环境因子。The ecological regulating technology was combined with the self-forming dynamic membrane bioreactor （SFDMBR） to reduce the sludge production in treating urban wastewater. The results indicate that in the presence of oligochaete, MLSS can be kept nearly 4 000 mg/L all along, which means that there is no biological sludge produced in the treatment process. Furthermore, sludge settleability is improved and the fouling of membrane is alleviated greatly, which prolongs the running period from 4 -5 days to one month, therefore, the effluent quality is much steadier. The presence of oligochaete does not have influence on the removal of COD and NH3 - N, but it affects the removal of TP, and the removal of turbidity is affected by the quantity of oligochaete too. Finally, it is found that as temperature and pH are fitted, the important parameters impacting the growth and propagation of oligochaete include dissolved oxygen, interior structure of the reactor, MLSS, and so on, in which dissolved oxygen is the key one.

关 键 词：污泥减量 蠕虫 自生动态膜生物反应器 

分 类 号：X703[环境科学与工程—环境工程]