State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, Nanjing, Jiangsu, PR China.
Bioresour Technol. 2011 Feb;102(3):2419-26. doi: 10.1016/j.biortech.2010.10.113. Epub 2010 Oct 28.
The aim of this project was to establish an economical and environmentally benign biotechnology for removing nutrients from non-point source wastewater. The proposal involves a hybrid bioreactor comprised of sequential anaerobic, anoxic and aerobic (A(2)/O) processes and an eco-ditch being constructed and applied in a suburban area, Kunming, south-western China, where wastewater was discharged from an industrial park and suburban communities. The results show that the hybrid bioreactor fosters heterotrophic and autotrophic microorganisms. When the hydraulic load is 200 m(3) per day with the running mode in 12h cycles, the removal efficiencies of the nutrients were 81% for TP, 74% for TDP, 82% for TN, 79% for NO(3)-N and 86% for NH(4)-N. The improved bacterial community structure and bacterial habitats further implied enhanced water quality and indicates that the easily-deployed, affordable and environmentally-friendly hybrid bioreactor is a promising bio-measure for removing high loadings of nutrients from non-point source wastewater.
本项目旨在建立一种经济环保的生物技术，用于去除非点源废水中的营养物质。该方案涉及一种由顺序厌氧、缺氧和好氧（A(2)/O）工艺和生态沟渠组成的混合生物反应器，该生物反应器正在中国西南部的昆明市的一个郊区地区建造和应用，那里的废水来自一个工业园区和郊区社区。结果表明，混合生物反应器促进了异养微生物和自养微生物的生长。当水力负荷为 200 m(3)/天时，运行模式为 12 小时循环时，TP 的去除率为 81%，TDP 为 74%，TN 为 82%，NO(3)-N 为 79%，NH(4)-N 为 86%。改善的细菌群落结构和细菌栖息地进一步表明水质得到了改善，这表明易于部署、经济实惠且环保的混合生物反应器是去除非点源废水中高浓度营养物质的有前途的生物措施。
