摘要
以城市污水处理厂的剩余活性污泥为初始原料,通过驯化后研究其对某矿山废水中的Cu()、Zn()两种金属离子的富集.结果发现,经驯化后的污泥可很好地起到对该废水中金属离子的预富集.在室温下,活性污泥质量浓度(MLSS)为3.1g·L-1的每升驯化活性污泥能够富集大约493mg的铜和305mg的锌.污泥的驯化盐分和富集时的pH值对富集率影响较为重要.与常规的活性污泥吸附淡水中金属离子实验相比较,驯化污泥的富集速率和方式都有较大变化.
The enrichment effect of domesticated activated sludge from the city waste water treatment plant on two metal ions of Cu(Ⅱ) and Zn(Ⅱ) is investigated. The results show that the domesticated activated sludge can enrich better these metal ions in the waste water. One litre the sludge can enrich about 493 mg copper and 305 mg zinc in the room temperature.Some factors including domestication salinity and enrichment acidity(pH) exert important influence on the enrichment efficiency. Especially, the enrichment rates and modes of domesticated activated sludge on the metal ions have been greatly improved compared with the conventional activated sludge.
出处
《郑州大学学报（理学版）》
CAS
2005年第2期104-108,共5页
Journal of Zhengzhou University:Natural Science Edition
基金
河南省科技攻关项目
编号200060001.
