不同植物浮床系统处理景观再生水试验研究

Reclaimed Water for Landscape Purification by Different Ecological Floating Bed

以水芹菜、空心菜、水葫芦及香根草作为供试浮床植物,进行了景观再生水处理效果试验比较.结果表明:水芹菜、空心菜、水葫芦、香根草4种浮床植物在城市再生水条件下生长状态良好,相对生长速率(RGR)在0.206~0.247/d之间变化,从高到低依次为:水葫芦>空心菜>香根草>水芹菜;4种植物浮床系统对再生水中的CODCr,TP,TN,NH3-N均有一定的去除效果.相对于南方地区,水葫芦长势一般,综合考虑空心菜、香根草、水芹菜比水葫芦更适合在苏北地区推广.

This paper studies on the reclaimed water purification for landscape by 4 different ecological floating bed. The oenanthe javanica, ipomoea aquatica forsk, alternanthera philoxeroides and vetiveria zizanioides are taked as test plants. The results show that four plants can grow well in reclaimed water, relative growth rate changes from 0. 206 to 0. 247, and the order is eichhornia crassipes ：〉ipomoea aquatica forsk^vetiveria zizanioides~ oenanthe javanica. The four different ecological float- ing beds can effectively remove CODCr,TP , TN and N H3-N from the reclaimed water for landscape. Compared with the southern region , the eichhornia crassipes grow poorly, and ipomoea aquatica forsk,vetiveria zizanioides and oenanthe javanica can be used more appropriately than eichhornia crassipes inSubei.