自生动态膜-生物反应器是一种将粗网材料制成的组件置于反应器中进行泥水分离的生物处理工艺。粗网材料表面形成的动态膜不仅能有效去除浊度，还具有生物活性，可以降解污染物。通过微电极技术，可以研究动态膜的生物活性。为便于微电极在线测量，构建微型反应器模拟动态膜的实际过滤过程，结合微动平台，采用溶解氧微电极测量动态膜内的溶解氧分布。结果表明，动态膜在反应器运行过程中结构发生变化，出现气泡。动态膜内溶解氧浓度随深度的增加而降低，在210～215mm深度处降至0。动态膜表层微生物的比耗氧速率在反应器运行第1、5 和8天分别为3413、1016 和1214mg/（g.h）。

对地下渗滤系统处理生活污水的氮磷去除机理进行了研究。结果表明，在2cm/d的水力负荷下，系统对氨氮、COD、总磷的去除率可达到90%以上；出水中氨氮、COD、总磷分别低于0.2,30，0.025mg/L；系统对总氮亦有良好的去除效果，达3.5%。强化布水措施可以有效地提高系统对污染物质的去除率。地下渗滤系统中通过硝化、反硝化作用可以去除约50%的进水总氮，是地下渗滤系统去除氮的主要途径。改善条件以促进反硝化反应是提高地下渗滤系统总氮去除率的关键。土壤吸附与沉淀作用是地下渗滤系统去除磷的主要途径。

Hydraulic characteristics in a membrane bioreactor are of significance for retarding membrane fouling and maintaining stable operation. Cross flow velocity along the membrane surface and its effect on transmembrane pressure change were experimentally.

Bath wastewater is an ideal wastewater-reclamation source for its large discharge amount, simple pollutant composition and low pollutant content. The feasibility of reclaiming bath wastewater with a membrane bioreactor was investigated in apilot plant of 10m3 per day at an organic load of 0.50-1.85kg-COD/(m3 per day). The operation was continued for 216 days without sludge discharge and chemical cleaning of membrane modules. The quality of the effluent obtained met the wastewater reclamation standard of China, with COD<40mg/l, NH4+−N<0.5mg/l and anionic surfactant (AS)<0.2mg/l. Biological treatment removed most pollutants in the influent, degrading 34-85% of COD and 98% of anionic surfactant. The membrane separation balanced the unstable biological treatment of COD but demonstrated no contribution to anionic surfactant removal. Inorganic substances were found to accumulate in the bioreactor. The main reason for membrane fouling was considered to be sludge adhesion and gel layer formation over the outer membrane surface and microbial growth over the inner membrane surface.

An anoxic/aerobic membrane bioreactor (MBR) was applied to simultaneous removals of nitrogen and carbon from food processing wastewater in a laboratory scale experiment. By continuous runs under appropriate operational conditions, COD, NH4 +-N and TN removal was over 94, 91 and 74%, respectively. The anoxic reactor and aerobic MBR contributed 40-63 and 29-46% to COD removal, and 31-43 and 47-64% to NH4 +-N removal, respectively. Nitrification in the MBR could be enhanced by adding some carriers for growth of adhesive biomass when the system was operated at a shorter sludge retention time (SRT). The maximum volumetric COD and TN loadings as high as 3.4kg COD m-3 day-1 and 1.26kg Nm-3 day-1 were achieved. Measurement results of sludge activity for nitrification were consistent with the effluent NH4 +-N concentration change.