生态型灌区应用伊乐藻修复受损水体的试验研究

本文将伊乐藻引入生态型灌区受损水体修复中。通过室内试验系统地研究了伊乐藻的净化效果，结果表明，伊乐藻是修复受损水体较理想的材料。伊乐藻对总氮(TN)、总磷(TP)和CODMn的累积去除率，在初夏分别为61%、89%和34%，在初冬为25.74%、26.59%和10.93%；伊乐藻对水体的净化能力高于菹草和金鱼藻。文中还探讨了修复过程中可能存在的二次污染问题。通过宏观的质量平衡估算，1g伊乐藻在1年内可以从1L水体中去除TN、TP和CODMn分别达到44.57、15.42和31.13mg。

Effect of Elodea Canadensis Michx on restoring polluted waterin ecology oriented irrigation district

The purification effect of Elodea Canadensis Michx was experimentally studied in laboratory. It was found that, in early summer, the accumulated removal rates of TN, TP and CODMn of this kind of plant were 61%, 89% and 34% respectively; but in early winter, the removal rates will be reduced to 25.74%, 26.59% and 10.93%. The purification ability of Elodea Canadensis Michx is higher than those of Potamogeton Crispus Linn and Ceratophyllum Demersum Linn. The potential problem of secondary pollution due to the decomposed Elodea Canadensis Michx was also discussed. According to the calculation of mass balance, the annual total removal of TN, TP and CODMn were 44.57mg, 15.42mg and 31.13mg per 1g of Elodea Canadensis Mich in 1L water respectively.