天津中心城区景观水体功能恢复与水质改善研究

Function Recovery and Quality Improvement of Landscape Water in Tianjin Central District

针对天津市水资源短缺、水环境恶化和水生态系统退化的局面,开展了天津中心城区景观水体功能恢复与水质改善技术的研究,并建成示范工程3项。其中,外环河水环境改善示范工程采用了投菌/浮床/沉床/人工湿地工艺,津河/卫津河示范工程采用的是化学/微生物/水生植物净化集成工艺,梅江生态园采用了人工湿地/稳定塘/循环河道旁路生态修复技术。各示范工程均稳定运行6个月以上,且处理效果良好,其中外环河水环境改善示范工程和梅江水环境改善示范工程水质达到地表水Ⅳ类标准,津河/卫津河水环境改善示范工程的水质达到地表水Ⅴ类标准。

To address water shortage, water environmental degradation and aquatic ecosystem degradation in Tianjin City, technologies for the function recovery and quality improvement of landscape water in Tianjin central district were studied. Three demonstration projects were constructed and operated stably for more than 6 months. The applied processes included bacteriostatic agents/floating bed/submerged vegetation bed/constructed wetland in the Waihuanhe demonstration project, phoslock/microbial agents/aquatic plants in the Jinhe-Weijinhe demonstration project, and constructed wetland/stabilization pond/ecological restoration by recycling river bypass in the Meijiang demonstration project. The water quality met class 1V of surface water quality standard in the Waihuanhe demonstration project and the Meijiang demonstration project, and class V of surface water quality standard in the Jinhe-Weijinhe demonstration project.