摘要
研究了加与不加还原剂、还原剂种类、还原剂加料方式、还原剂加入量对铬渣固化体浸出毒性的影响。研究结果表明:硫酸亚铁预还原后得到的铬渣固化体浸出毒性比没有预还原处理的固化体浸出毒性要降低60％以上;用硫酸亚铁的效果与用硫酸亚铁胺的效果相差不大,且前者价格便宜,使用中不会造成二次污染;硫酸亚铁的加料方式对处理效果影响很大,适宜的加料方式是硫酸亚铁先配成水溶液后与铬渣进行搅拌,可以增大还原反应进行的程度;硫酸亚铁的加入量为理论计算值的125％为宜。
Effect of using/non-using reluctant, dosage and sorts of reluctant, filling-in manner of reluctant on chromium waste leaching toxicity has been studied, and showed that the leaching toxicity of chromium waste formed with ferrous sulfate pre-reducing decreased 60% above than those of chromium waste formed without pre-reducing. There were no apparent different effects between using ferrous sulfate and using ferrous ammonium sulfate, the former was much cheaper and no secondary pollution. The filling-in manner of ferrous sulfate could greatly affect treatment effect, ferrous sulfate dissolved in water mixed with chromium waste could increase reducing reaction, suitable filling-in manner of ferrous sulfate dissolved in water mixed with chromium waste could increase reducing reaction, this was the filling-in manner of ferrous sulfate. The suitable dosage of ferrous sulfate was 125% of the theoretical value.
出处
《上海环境科学》
CAS
CSSCI
CSCD
北大核心
2002年第8期466-468,共3页
Shanghai Environmental Sciences
基金
浙江省自然科学基金项目
编号20010155。
