Li Fangyue, Wichmann Knut, Otterpohl Ralf
Hamburg University of Technology, Institute of Water Resources and Water Supply, Schwarzenbergstr. 95 E, D-21073 Hamburg, Germany.
Sci Total Environ. 2009 May 15;407(11):3439-49. doi: 10.1016/j.scitotenv.2009.02.004. Epub 2009 Feb 28.
Based on literature review, a non-potable urban grey water reuse standard is proposed and the treatment alternatives and reuse scheme for grey water reuses are evaluated according to grey water characteristics and the proposed standard. The literature review shows that all types of grey water have good biodegradability. The bathroom and the laundry grey water are deficient in both nitrogen and phosphors. The kitchen grey water has a balanced COD: N: P ratio. The review also reveals that physical processes alone are not sufficient to guarantee an adequate reduction of the organics, nutrients and surfactants. The chemical processes can efficiently remove the suspended solids, organic materials and surfactants in the low strength grey water. The combination of aerobic biological process with physical filtration and disinfection is considered to be the most economical and feasible solution for grey water recycling. The MBR appears to be a very attractive solution in collective urban residential buildings.
基于文献综述，提出了一种非饮用水城市中水回用标准，并根据中水特性和所提出的标准对中水回用的处理方案和回用方案进行了评估。文献综述表明，各类中水都具有良好的生物降解性。浴室和洗衣房的中水氮和磷含量不足。厨房中水的化学需氧量（COD）：氮：磷比例平衡。综述还表明，仅靠物理过程不足以确保充分减少有机物、营养物质和表面活性剂。化学过程可以有效去除低强度中水中的悬浮固体、有机物质和表面活性剂。好氧生物处理与物理过滤和消毒相结合被认为是中水回用最经济可行的解决方案。膜生物反应器（MBR）在城市集体住宅建筑中似乎是一个非常有吸引力的解决方案。
