Wastewater reclaim in industrial parks can effectively reduce the dependence on external water resources, few literatures evaluated the reclaim system from perspectives of economy, technology, and environmental impact. It is very popular across China that a constructed wetland is linked with a wastewater plant and then discharged the tailwater into surface waters, based on current situation, pilot experiment, and other available techniques, six scenarios for wastewater reclaim system were designed for Shanghai Chemical Industrial Park. Using life cycle assessment, it was found that in scenario of pilot experiment, most environmental impact was derived from wastewater plant and ultra filtration - reverse osmosis, in which ultra filtration - reverse osmosis accounted >20 % for POCP, AP, and EP, Wastewater plant accounted >86 % for ADP, ODP. It was showed that electricity and sludge were most important parameters affecting LCA, when electricity consumption was reduced by 20 %, total standardized environmental impact would be changed in the range of 1.40 %–1.65 %, the most significant change was HTP (6.12 %–6.32 %) when 20 % up and downward change in sludge amount, followed by MAETP (5.27 %–5.36 %). A multi-criteria decision-making analysis was conducted on all the scenarios based on environmental impact, life cycle cost, technical efficiency, it was showed that the scenario designed for pilot experiment was the best available technique, which was consisted of wastewater plant, hybrid constructed wetland, ultra-filtration and reverse osmosis, and reused as desalted water. A wastewater reclaim plant is suggested from the result of this paper. It was believed that this study could provide references for construction of wastewater reclaim system in industrial parks of the world.

中文翻译：

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某化工园区污水厂-混合人工湿地-超滤反渗透废水回用系统评价多准则决策分析

工业园区废水回用可以有效减少对外部水资源的依赖，但很少有文献从经济、技术和环境影响的角度对回用系统进行评价。国内普遍采用人工湿地与污水处理厂相连，然后将尾水排入地表水体的方式，基于现状、中试等现有技术，为上海化工设计了六种污水回用系统方案公园。通过生命周期评估发现，在中试场景中，大部分环境影响来自污水厂和超滤-反渗透，其中超滤-反渗透对POCP、AP和EP的影响>20%，废水植物中 ADP、ODP 含量>86%。结果表明，电力和污泥是影响LCA最重要的参数，当用电量减少20%时，标准化环境影响总量将在1.40%~1.65%范围内变化，其中变化最显着的是HTP（6.12%-当污泥量上下变化20%时，MAETP（5.27%–5.36%）次之（6.32%），其次是MAETP（5.27%–5.36%）。基于环境影响、生命周期成本、技术效率对所有方案进行了多标准决策分析，结果表明，为试点实验设计的方案是最佳可行技术，其中包括污水厂、混合人工湿地，超滤和反渗透，作为淡化水回用。根据本文的结果，建议建设废水回收厂。相信本研究可​​为世界工业园区废水回用系统建设提供参考。