摘要
在自然光照条件下,进行静态试验,探讨空心菜、金鱼藻、水葱、芦苇、美人蕉、菖蒲6种水生植物深度净化石化废水二级处理尾水效果。试验结果表明:经过15 d静态净化,所选植物对水中营养物质有较好的去除效果,水葱对CODCr去除率最高,金鱼藻对TN的去除效果最好,而空心菜装置中剩余TP最少;综合对比,空心菜对环境适应性强,综合净水效果明显;水生植物昼间根系泌氧现象明显,但夜间存在竞争水中溶解氧现象。
The experiments of advanced treatment of petro-chemical waste water with different aquatic plants were evaluated. The results of the experiments showed that the aquatic plants could remove CODcr, TN and TP from the water effectively. Comprehensive judgment showed that Scippus validus, Cerato- phyllum demersum and Ipomoea aquatica could best remove CODcr, TN and TP respectively. And Ipomoea aquatica could well fit the water quality and remove any kind of the pollutant effectively. The aquatic plants could transport oxygen to water through roots after photosynthesis in daytime, but at night they could respire the oxygen in water, which could reduce the oxygen concentration evidently.
出处
《安全与环境工程》
CAS
2008年第3期59-61,共3页
Safety and Environmental Engineering
关键词
深度净化
石化废水
水生植物
advanced treatment
petro-chemical wastewater
aquatic plants
