水生经济植物对虾塘养殖废水的净化能力研究

The Study of Purification Capacity of Two Kinds of Aquatic Economic Plants on Aquaculture Wastewater of Shrimp Ponds

选取空心菜和水芹2种水生经济植物,研究其在实验条件下的生长状况和对虾塘养殖废水水质的净化作用。结果表明:以上2种植物在虾塘养殖废水中均能正常生长;空心菜在4周时间内对虾塘废水中TN、TP、NH4+-N、NO2-N、高锰酸盐指数的平均去除率分别为88.65%、68%、93.6%、60.95%、59.3%;水芹对废水中TN、TP、NH4+-N、NO2-N、高锰酸盐指数的平均去除率分别为58.6%、54%、58.55%、41.3%。研究结果为利用空心菜和水芹有效净化虾塘废水提供了有力证据。

The research refers to water spinach and water fennel as aquatic economic plants, to study the growth condition in the field outside and the purification on shrimp aquaculture wastewater. The results show that the two kinds of plant can grow normally in shrimp aquaculture wastewater. The average removal rate of TN, TP, NH4 ＋ - N, NO2 - N, permanganate index respectively reached 88.65 % ,84. 85% ,64. 3% ,42% ,57.85% by spinach during 4 weeks growth and the average removal rate of TN,TP,NH4 ＋ - N,NO2 - N,permanganate index respectively reached 70.4% ,31.7% ,73.55% ,52.4% ,42. 75% by water fennel. The results of using water spinach and water fennel can offer convincing evidence of effectively purifing aquaculture wastewater of shrimp ponds.