摘要
微型动物捕食作用减量污泥的技术主要有淹没式生物膜法、两段生物反应器、微型动物直接接种法和蚯蚓生态滤池。其中,淹没式生物膜技术和蚯蚓生态滤池技术已在工程上得到应用,这2种技术污泥减量效果明显,具有工艺简单、操作方便和成本低等优点。提高磷或氮磷去除率是微型动物捕食污泥减量技术共同面临的问题。进一步优化工艺设计,消除两段生物反应器的污泥膨胀和泡沫,解决蚯蚓生态滤池在工程应用中出现的布水不均匀、局部积水和污泥堵塞等问题。深入研究微型动物捕食污泥减量系统中食物链动态平衡代谢机理,以及填料性质、水力负荷、污染物负荷和温度等工艺条件和环境因素对食物链的影响,对于进一步研究食物链生长动力学,强化微型动物捕食污泥能力具有重要意义。
Sludge reduction technologies based on micro-animal predation activity include submerged biofilm （SB）, two-stage bioreactor, micro-animal inoculated wastewater treatment system and microbial-earthworm ecofilter system （MEES）. With simple process, convenient operation and lower costs, SB and MEES have been used in industrial practice and proved to be effective in sludge reduction. Further researches on those technologies have to be carried out for enhancing the removals of phosphorus and nitrogen. It was necessary to optimise their process design for controlling sludge bulking and foaming that often happened in two-stage bioreactor process, and to solve the problem of uneven water distribution, Iocalised water ponding and ecofilter clogging by sludge. To improve the predation activity of micro-animals and understand kinetics of food chain in those technologies, further researches were needed to be conducted on dynamic equilibrium metabolism mechanism of food chain, as well as effects of process conditions such as filler characteristics, hydraulic load, pollutant loading, temperature and environmental factors on the food chain.
出处
《上海环境科学》
CAS
CSCD
2011年第1期31-36,共6页
Shanghai Environmental Sciences
基金
北京市教委劳动卫生与环境卫生科技创新平台资助，编号：PXM2009-014205-074352
关键词
微型动物
污泥减量技术
研究进展
Micro-animal Sludge reduction technology Research progress
