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当前位置: 首页 > 文章 > 膜生物反应器用于猪场污水深度处理试验 农业环境科学学报 2007,26 (04) 1277-1281
Position: Home > Articles > A Membrane Bioreactor for Swine Wastewater Advanced Treatment Journal of Agro-Environment Science 2007,26 (04) 1277-1281

膜生物反应器用于猪场污水深度处理试验

作  者：
孟海玲;董红敏;黄宏坤
单  位：
中国农业科学院农业环境与可持续发展研究所;中国农业大学农业部设施农业生物环境工程重点开放实验室
关键词：
膜生物反应器;中空纤维膜;猪场污水;水处理
摘  要：
为满足今后越来越严格的畜禽污水排放标准,提高水处理效果,达到污染物排放的减量化,减轻环境污染负荷,采用中空纤维膜生物反应器作为猪场污水厌氧后的好氧工艺进行深度处理,对该工艺的处理效果、负荷特性及膜过滤性能变化等作了试验研究。结果表明,在低溶解氧(多在1mg·L-1以下)、MLSS(污泥浓度)维持在8.48～13.1g·L~(-1)的条件下,COD和NH_4~+-N负荷分别平均为1.32和0.6kg·m~(-3)·d~(-1),均远高于普通活性污泥法,且随着负荷的增加仍能保持稳定的去除率。负荷的降低主要是由膜出水量的降低造成的,保证膜通量、降低膜污染是获得高效、高质处理效果的关键所在。在运行近两个月时,由于未排泥发生污泥膨胀现象,SRT过长,池内混合液沉降性能变得很差,探索合适的SRT(污泥停留时间)也是一个实际运行的关键所在。
译  名：
A Membrane Bioreactor for Swine Wastewater Advanced Treatment
作  者：
MENG Hai-ling1, DONG Hong-min2, HUANG Hong-kun2 (1.Key Open Laboratory of Agricultural Bio-environment Engineering, Agriculture Ministry, China Agriculture University, Beijing 100083, China; 2. Institute of Agro-environment & Sustainable Development, the Chinese Academy of Agricultural Sciences, Beijing 100081, China)
关键词：
membrane bioreactor; hollow fiber membrane; swine wastewater; water treatment
摘  要：
Stricter discharge standard of pollutants for livestock and poultry breeding will be put forward in the future. To meet the discharge standard, improve effluent quality, reduce pollutant discharge and relieve environment load, a 10 m3·d-1 hollow fiber membrane bioreactor for swine wastewater treatment was set up as advanced treatment after anaerobic digestion. The effluent quality, loading rate and the membrane permeability were studied. About 4 months operation of the MBR, the COD loading rate was 0.41~2.74 kgCOD·m-3·d-1, averaged 1.32 kgCOD·m-3·d-1 and NH+4-N loading rate was 0.1~1.1 kgNH+4-N·m-3·d-1, averaged 0.6 kgNH+4-N·m-3·d-1 when DO was low (under 1 mg·L-1) and MLSS maintained 8.48~13.1 g·L-1. The results were better than those of the conventional activated sludge process and biofilm reactor. The removal of COD and NH+4-N kept stable when the loading rate was increased. The reduction of the throughputs was the main reason of the reduction of the loading rate. Therefore, keeping high permeate flux or reducing membrane fouling was very important to obtain effective and good quality results of wastewater treatment. Sludge bulking happened when MBR ran two months without discharge of sludge, and the settling character of mixed liquid in MBR turned very bad, so an appropriate SRT was important in MBR application.

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