城市污水源头分类与粪尿资源化途径的分析研究.docx

城市污水源头分类与粪尿资源化途径的分析研究
[日期:2008-10-23]
来源:中国生态排水网  作者:张健1汪苹2
[字体:大中小]
    摘要: 随着中国城市化的高速发展,地表水环境容量的局限日渐凸现。通过高效的节水便器,一方面从冲厕用水上节水,另一方面单独收集高浓度的人粪尿,在达到高效节水的同时将人粪尿从废水中分离。人粪尿的源头分离可以显著减少排水的有机污染负荷和营养盐浓度,从而可以更经济有效地提高处理后出水的水质及其利用价值。单独收集的高浓人粪尿量小并富含城市污水中的有机物和营养盐,可更有效地实现资源化。本文分析研究城市污水的源头分类以及分离出来的高浓粪尿的资源化途径。
    关键词:粪尿,源头分类,资源回收,节水,生态排水
    Analysis Study on Source Collection and Utilization Treatment Pathways of the Night Soil
Wang Ping, Jian Zhang
    Abstract: With increasing urbanization in China, the capacity of the receiving water bodies for sewage es more andmore limited. Using highly efficient water saving toilets the water consumption can be minimized at source and the highly concentrated night soil can be separately collected. The source separation can significantly reduce the quantity anic and nutrients load of the sewage so that the quality and reuse value can be cost-effectively improved by suitable treatment steps. With the low quantity and high concentration of anic substances and nutrients, resources contained in the night soil can be more effectively recovered. Source separation and utilization treatment pathways are analyzed and studied.
    Keywords: night soil, source separation, resource recovery, water saving, ecological sanitation

    1. 问题与背景
    城市水资源短缺与城市水域污染是我国大部分城市所面对的问题。
    随着城市化的高速发展,接纳城市污水的地表水的环境容量的局限日渐凸现。郑兴灿等(2005)对江浙平原河网地区的案例研究显示即使全部城市污水都达到G