最新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
of rural drinking water sources, protection of drinking water sources in rural areas by t source and the highly concentrated night soil can be separately collected. The source separation can significantly reduce the quantity and organic 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 the organic 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局部城市所面对的问题。
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
    随着城市化的高速开展，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〔2022〕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到达GB18918-2022中一级B的要求，排放的污染物负荷仍然会明显超过受纳水体的环境容量，水污染问题仍然难以真正消除。
    针对城市的集中性的高耗水、污水对环境容量的压力以及资源的流失，污水的源头分类〔Source Separation〕和源头控制〔Source Control〕成为水生态可持续开展的一个重要策略(Otterpohl, 1999, Behrendt et al. 2001，陈吉宁2022)。
    冲厕水约占居民用水的1/2-1/3，节水潜力巨大。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，在到达高效节水的同时将人粪尿从废水中别离，从而显著减少排水的有机污染负荷和营养盐浓度，便于经济的实现排水和人粪尿的资源化。
    本文分析研究源头别离以及别离出来的高浓粪尿的资源化途径。
    2. 节水与污水的源头分类的意义
of rural drinking water sources, protection of drinking water sources in rural areas