尾水同级排入是指在集中式饮用水水源地和高要求的功能水域中,为保证用水安全和补充水源,将城镇污水处理厂的尾水经过深度处理,使其水质指标达到相应的水域功能标准后排入水体,是一种缓解水危机和修复水生态环境的有效途径.介绍了国内外同级排入对水质的要求以及相关的工程实例,总结得出工程实例中主要采用的深度处理技术是膜分离技术,并分析其技术特征和存在问题,指出了活性炭吸附、 人工湿地等高效深度处理技术的优化组合与集成对实施水资源的可持续利用具有战略意义.%In order to ensure the safety of drinking water sources and supply make-up water soruce, up-to-standard water drainage requires that effluent water from wastewater treatment plant should receive advanced treatment so as to make the quality meet the relevant standard before it comes to centralized drinking water source area or other areas with high water quality requirement. Therefore, effluent water up-to-standard drainage is an effective path to remit water crisis and restore water ecological environment. The water quality requirement and corresponding project examples of the said technology in China and abroad were introduced, the main ad-vanced treatment technology applied in project examples was summarized to be membrane separation technology-with its technical features and existing problems analyzed at the same time. It was indicated that, the optimization and combination of activated carbon adsorption, constructed wetland and some other advanced treatment tech-niques had profound significance for water resource sustainable utilization.
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