摘要
分别以高炉渣、瓜子片、碎石为基质,美人蕉、黑三棱草、野茭白为植被构建人工湿地模拟系统,对其净化效果进行试验研究。结果表明,种植植物的湿地系统比未种植植物的湿地系统净化效果好,不同植物同种基质湿地系统对不同指标的净化效果各不相同,如不同植物对NH3-N和TN的净化效果从高到低顺序为:黑三棱草,美人蕉,野茭白;同种植物不同基质湿地系统对不同指标的净化效果也不同,不同基质对NH3-N和TN的净化效果从高到低顺序为:碎石,高炉渣,瓜子片。对NH3-N和TN浓度较高的污染环境,采用碎石为基质、黑三棱草为植被的人工湿地系统效果最佳。
Constructed wetland simulation systems with blast furnace slag,melon slices,and gravel as substrates,and canna,sparganium grass,and wild rice stem as vegetation,were constructed,and experiments on the purification effect of TN,NH＋3-N,TP,and CODCr were carried out.The purification effect was more obvious in wetlands with plants than in wetlands without plants.Constructed wetland systems with different plants reacted differently to the purification effect in the same substrate,and the order of the purification effect of different plants for NH＋3-N and TN was rhizoma scirpi yagarae canna indica zizania aquatica.The same plants in a different substrate also had different purification effects,and the order of the purification effects for NH＋3-N and TN was gravel blast furnace slag melon slices.Therefore,with high NH＋3-N and TN concentration,the constructed wetland using gravel as the substrate and rhizoma scirpi yagarae as the vegetation was the most effective system.
出处
《水资源保护》
CAS
2010年第4期62-66,共5页
Water Resources Protection
关键词
人工湿地系统
基质
水生植物
净化效果
constructed wetland system
substrate
aquatic plants
purification effect
