摘要：
采用南方高岭土(红壤)为原料合成FeS/高岭土片层复合材料,同时提出悬袋法天然水体污染治理工艺。初步探讨该复合材料在悬袋状况下对铅污染水体的吸附净化能力,实验表明在常温、中性、吸附时间60 min、复合材料投加质量分数为2%的条件下,可使被铅污染的水体中铅质量浓度从20 mg/L下降到0.25 mg/L,低于含铅废水工业排放标准。生物试验表明该复合材料无毒,可以作为天然水体重金属污染初步修复材料而与生物修复组合使用,以减少生物修复压力。
关键词:
重金属,
水体污染,
高岭土,
复合材料
Abstract:
Kaolin（laterite） which exists generally in South China has been used as raw material to synthesize FeS/kaolin layer-built composite material.The treatment process of natural water pollutions by bag-hanging method is put forward.The adsorption and purification capacities of the composite material,under bag-hanging condition,have been studied.The experiments prove that under normal temperature,neutral,adsorption time 60min,and dosage 2％,the lead content in the lead polluted water body decreases from 20 mg/L to 0.25 mg/L.It is lower than the content of lead-containing Wastewater Discharge Standard.Biological tests prove that this composite material is non-toxic.It can be used as the repair material for heavy metal-polluted natural water and be used in combination with biological repair,in order to reduce the pressure of biological repair.
Key words:
heavy metal,
water pollution,
kaolin deposits,
composites
中图分类号:
陈楷翰, 陈莎莎, 林建, 陈在城, 张奕添. FeS/高岭土片层复合材料的合成及对重金属废水反应性能研究[J]. 工业水处理, 2009, 29(4): 57-59.
Chen Kaihan, Chen Shasha, Lin Jian, Chen Zaicheng, Zhang Yitian. Synthesis of FeS/kaolin layer-built composite material and its effect on heavy metal wastewater capacities[J]. INDUSTRIAL WATER TREATMENT, 2009, 29(4): 57-59.