超声波改性硅酸钙处理焦化废水的实验研究  

Study on the treatment of coking wastewater with calcium silicate modified by ultrasonic wave

作　　者：韩剑宏[1] 马莉[1] 孙军民 刘派[3] 杨冬梅[1] 李静璇 曲堂超 

机构地区：[1]内蒙古科技大学能源与环境学院,内蒙古包头014010 [2]大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心,内蒙古呼和浩特010050 [3]华南理工大学轻工与食品学院,广东广州510640 [4]包头市排水产业有限责任公司,内蒙古包头014040 [5]包钢稀土(集团)高科技股份有限公司,内蒙古包头014040

出　　处：《工业水处理》2013年第7期22-24,29,共4页Industrial Water Treatment

基　　金：国家科技支撑计划(2009BAB49B02)

摘　　要：利用超声波改性硅酸钙并用其处理焦化废水生化出水,对比了改性前后硅酸钙吸附性能的变化,研究了改性硅酸钙投加量、吸附时间、pH对吸附效果的影响。结果表明,在相同条件下,改性硅酸钙对COD、NH3-N的去除率优于硅酸钙。改性硅酸钙的最佳吸附条件:改性硅酸钙投加质量浓度20.0 g/L、振荡时间45 min、pH=6,此时COD的去除率为41.16%,NH3-N的去除率为66.16%。The treatment of biologically treated coking wastewater with calcium silicate modified by ultrasonic wave has been experimentally investigated. The difference of adsorbing capacities before and after the modification is contrasted. The effects of modified calcium silicate dosage, adsorption time and pH on adsorbing efficacy are studied. The results indicate that under the same experiment conditions, the removing rate of COD and NH3-N by using mod- ified calcium silicate are higher than by using calcium silicate. And ,the optimum adsorbing conditions are as fol- lows ： the modified calcium silicate dosage is 20.0 g/L, shaking time is 45 min, and pH is 6. Under these conditions, the removing rates of COD and NH3-N by using modified calcium silicate are 41.16% and 66.16%, respectively.

关 键 词：超声波 改性硅酸钙 焦化废水 吸附 

分 类 号：X703.1[环境科学与工程—环境工程]