摘要
对近年来寡毛类蠕虫污泥减量工艺和寡毛类蠕虫生长繁殖规律的研究进展进行了系统评述.除了种属以外,寡毛类蠕虫在活性污泥系统中的稳定存在、生长和繁殖直接影响到其对活性污泥的捕食和削减能力,其生长繁殖规律受到底物性质、环境因素、种群密度等因素影响.现有研究大多采用表观污泥产率系数来衡量寡毛类蠕虫污泥减质效果,该方法易受到活性污泥工艺中多种因素的影响,且忽略了蠕虫对活性污泥的浓缩、团聚作用,不能准确反映寡毛类蠕虫的污泥减质效果.而同位素示踪方法为寡毛类蠕虫污泥减质效果评价、筛选适于活性污泥系统的寡毛类蠕虫种属提供了一条新途径.寡毛类蠕虫具有改善活性污泥沉降的性能,亦可考虑将其应用于污泥减容.
Advances in sludge reduction induced by oligochaetes and their growth kinetics are thoroughly reviewed. Stable presence, growth and reproduction of oligochaetes in activated sludge system, both affecting their predation on sludge and their capacity of sludge reduction, are significantly influenced by such factors as substrate characteristics, environmental conditions, population density of oligochaetes, except for their different species. Based on direct weighing, the observed sludge yield coefficient is not considered as suitable to evaluate the real capacity of sludge reduction ofbiomass by oligochaetes, because this method can be easily affected by lots of factors in activated sludge process. Whereas, isotope tracing provides a new way to more effectively evaluate the capacity of sludge reduction and screen worms suitable for sludge reduction of biomass. In addition, worms can improve the sludge settling, and should be considered in sludge reduction of volume.
出处
《过程工程学报》
EI
CAS
CSCD
北大核心
2008年第5期1030-1040,共11页
The Chinese Journal of Process Engineering
基金
国家自然科学基金资助项目(编号:5040821)
国家高技术研究发展计划(863)基金资助项目(编号:2007AA06Z347)
关键词
活性污泥法
污泥减量
寡毛类蠕虫
activated sludge process
sludge reduction
oligochaetes
