Jefferson B, Palmer A, Jeffrey P, Stuetz R, Judd S
School of Water Sciences, Cranfield University, Bedfordshire, UK.
Water Sci Technol. 2004;50(2):157-64.
Characterisation of grey water reveals a source water that is similar in organic strength to a low-medium strength municipal sewage influent but with physical and biodegradability characteristics similar to a tertiary treated effluent. The characteristics of the water suggest biological processes are the most suitable unit processes for treating grey water. The highly variable nature of the source requires that selected technologies must be inherently robust in their operation. One potential area of concern is the high COD/BOD ratio and nutrient deficiency in terms of both macro and micro nutrients which grey water exhibits potentially retard the efficacy of biological processes.
中水的特性表明，其原水的有机强度与中低强度的城市污水进水相似，但物理和生物降解特性与三级处理后的出水相似。这种水的特性表明生物处理工艺是处理中水最合适的单元工艺。由于原水性质变化很大，因此所选技术在运行中必须具有内在的稳健性。一个潜在的问题是中水的化学需氧量/生化需氧量比值较高，且在大量和微量营养元素方面存在营养元素缺乏的情况，这可能会阻碍生物处理工艺的效果。
