【摘要】 水花生对水体中重金属Pb2+的富集作用研究表明,重金属Pb2+浓度为5mg／L,pH为7．0-8．0 (pH为7．5最佳),处理温度为25℃-30℃(温度25℃最佳)时;在处理时间为7d以后,水花生净化Pb2+可以达到低于国家标准所允许排放的最高浓度0．2mg／L．更多还原

【Abstract】 The results of study on enrichment of heavy metal Pb2+ in water show that the water can be purified by Alternanthera philoxeroides. When heavy metal Pb2+ is 5.0mg/L, pH is 7.0-8.0(optimum is 7.5), temperature is 25℃-30℃(optimum is 25℃), and disposal time is 7 days or more, the existing Pb2+ in the water is less than 0.2mg/L (standard of the state).更多还原