天津开发区再生水修复生态示范工程

针对天津开发区土壤严重盐碱化、盐渍化、透气性差和再生水含盐量高两大难题,重点研究了水生植物生态恢复技术。筛选了适宜的耐盐植物品种,经驯化后几乎不采取或很少采取工程措施就可以完成植物恢复;初步建成了生态水体示范工程,对TN、NH3-N及NO3--N去除率分别达到50%、30%、50%以上;对TP、PO34--P的去除率分别达到75%、80%;同时生态区土壤盐分有不同程度的溶出,洗盐效果明显。

Demonstration Project for Ecological Restoration with Reclaimed Water in Tianjin Economical Development Area

In response to the salinization and poor air permeability, and the high salt content in the soil in TEDA, the ecological restoration of aquatic plant was studied. The proper and salt tolerant plants were screened, and after acclimation, restoration of these plants was achieved by taking few engineering measures. The demonstrative project of ecological waters was set up initially; the removal rate of more than 50%, 30%, and 50% can be reached respectively for TN, NH_3-N, and NO~-_3-N, and 75%, 80% for TP, PO~3-_4-P respectively. Meanwhile, the salt content of soil in ecological area can be dissolved out at different level, with remarkable salt elimination effect.