Abstract:
The removing rate of cadmium in wastewa ter from coal mine in the calamus artificial wetland,whose substrates consists of soil+sand and soil+cinder,respectively,has been studied,and the effect of flow rate on the cadmium removing rate in wastewater from coal mine is investigated.The results show that the highest removing rate of cadmium in the calamus articial wetland whose substrate is constructed by soil and sand can reach 100%,at least 86.23%.Meanwhile the highest removing rate of cadmium in the calamus artificial wetland whose substrate is constructed with soil and cinder can reach 99.63%.But,when the flow rate has increased to15 L/d,the removing rate of cadmium in the system is only 66.11%.Therefore,the(soil+sand) calamus artificial wetland system has stronger purifying ability than the(soil+cinder) calamus wetl and system.
Key words:
calamus,
artificial wetlands,
removal rate of cadmium,
wastewater from coal mine
摘要：
研究了分别以泥土+河沙与泥土+炭渣2种基质构建的菖莆人工湿地对煤矿废水中镉的去除率,并探讨了流量对镉去除率的影响。结果表明:用泥土+河沙基质构建的菖蒲人工湿地对镉的去除率最高可达100%,最低也为86.23%。以泥土+炭渣为基质构建的菖蒲人工湿地对镉的去除率最高能达到99.63%,但当废水流量增大到15 L/d时,系统对镉的去除率仅为66.11%。因此,菖莆(泥土+河沙)人工湿地系统比菖莆(泥土+炭渣)人工湿地系统对煤矿废水中镉的净化能力强。
关键词:
菖蒲,
人工湿地,
镉去除率,
煤矿废水
CLC Number:
Cao Youming, Dai Tao. Study on the treatment of cadmium-containing wastewater from coal mine in calamus artificial wetlands[J]. INDUSTRIAL WATER TREATMENT, 2012, 32(7): 43-45.
曹优明, 戴涛. 菖蒲人工湿地对煤矿废水中镉的处理研究[J]. 工业水处理, 2012, 32(7): 43-45.