水葱对高盐再生水的净化效果研究

通过水葱去除天津泰达景观河道（以高盐再生水为补水）水体中污染物的室内试验和现场测定结果，考察了对不同污染物的去除情况。室内试验显示，对COD、TN、NO36--N、NH3-N、TP、PO4^3--P的去除率分别为27．85％、55．03％、55．20％、67．5％、84．25％、86．02％；实际水体的测定结果表明，对COD、TN、NO3^--N、NH3-N、TP、PO4^3--P的去除率分别为-21．37％、61．84％、72．35％、9.30％、49.09％、56.52％；水葱对含盐量高达5000mg／L的再生水具有明显的净化效果，并且能够降低水体的pH值。因此，可通过适时收割水葱来去除水体中的污染物，达到净化水质的目的。

Study on Effect of Scirpus Tabernaemontani Gmel on Purification of Reclaimed Water with High Salt

The contamination removal effect of high salty reused water in Tianjin TEDA Landscape River by S. tabernaemontani Gmel was studied by means of the pilot researches in indoor test and the actual water body monitoring. The results indicate that removal rates of COD, TN, NO3^- - N, NH3 - N, TP, PO4^3- - P are 27.85%, 55.03%, 55.20%, 67.5%, 84.25%, 86.02% respectively in pilot researches, and the removal rates of COD, TN, NO3^-- N, NH3 - N, TP, PO4^3- - P are - 21.37%, 61.84%, 72.35%, 9.30%, 49.09%, 56.52% respectively in actual water body. The analytical result shows that S. tabernaemontani Gmel can effectively purify reclaimed water with high salt of 5 000 mg/L and reduce the value of pH at the same time. It can be effective to remove contamination of the water body by timely harvesting the S. tabernaemontani Gmel.