城市污水再生处理反渗透产水的水质特征与超高标准处理技术

系统总结了城市污水再生处理反渗透产水的有机物浓度水平、组成特征和污染来源,分析了其利用途径和风险,探讨了反渗透产水超高标准处理技术的现状和发展趋势.与常规水源相比,再生水反渗透产水中有机物的浓度升高(可高达500~1000μg-C/L)、种类增加(超过百种).产水中药物和个人护理品、工业化合物、内分泌干扰物和氧化副产物等多有检出(10^-3~2.5μg/L),应关注其长期暴露的健康风险.反渗透产水中占有机碳比例70%的有机物组分及其特征尚未完全掌握,亟需开展系统研究.新兴自由基氧化技术、新型光源利用技术等是反渗透产水超高标准处理技术的重要发展方向.

Composition characteristics and ultra-high standard treatment of reverse osmosis effluent produced during municipal wastewater reclamation process

Because reverse osmosis (RO) can remove most pollutants from the feed water, RO technology has great application potential in treating municipal wastewater and producing reclaimed water for boilers, electronics industry and potable reuse. This study systematically summarized the concentration level, composition characteristics and sources of organic matter in municipal wastewater reclamation reverse osmosis (mWRRO) effluent. The usages of mWRRO effluent and corresponding risks were analyzed. The current ultra-high standard treatment technologies for mWRRO effluent and their developing trends were discussed. Compared with conventional water sources, the concentration of organic matter in the RO effluent produced during municipal wastewater reclamation process was higher (up to 500~1000μg-C/L). More than 100 organic contaminants have been identified in mWRRO effluent. Pharmaceuticals and personal care products, industrial compounds, endocrine disruptors, and oxidative by-products in RO effluent are frequently detected (10^-3~2.5μg/L). Their long-term health risks deserve attention. The composition and characteristics of around 70% of the organic matter (calculated by organic carbon) in RO effluent have not been fully elucidated, which require systematic investigation. The radical synergistic oxidation and dual-wavelength ultraviolet (VUV/UV) technology are important developing trends of ultra-high standard treatment technology for RO effluent.