摘要
首次将固体废弃物硅酸钙用于焦化废水的预处理,通过动态吸附试验考察了柱高和进水负荷对原水COD和NH3-N去除率的影响。结果表明,进水负荷一定时,COD和NH3-N去除率均随柱高的增加而增大,柱高越高,增大越显著。柱高一定时,COD和NH3-N去除率均随进水COD和NH3-N质量浓度的增加而增大,去除率的增加在低进水负荷下更为显著。经直径为10 mm、高为300 mm的硅酸钙吸附柱预处理,原水COD和NH3-N的动态去除率分别可达58.9%和35.9%。
Calcium silicate as solid waste was used for the first time in the pre-treatment of coking wastewater. The impact of bed depth and influent load on removal rate of COD and NH3-N in coking wastewater were investigated through dynamic adsorption experiment. The results showed, given the influent load was fixed, the removal rate of both COD and NH3-N increased with the increase of bed depth, the higher the bed depth, the more remarkably the removal rate increased. Given the bed depth was fixed, the removal rate of COD （NH3-N） increased with the increase ofinfluent COD （NH3-N） concentration. However, the increase of the removal rate was more remarkable under relatively low influent load. Using calcium silicate bed with 10 mm in diameter, and 300 mm in depth for pre-treatment, the dynamic removal rate of COD and NH3-N were up to 58.9% and 35.9%, respectively.
出处
《水处理技术》
CAS
CSCD
北大核心
2012年第12期30-32,共3页
Technology of Water Treatment
基金
国家科技支撑计划(2009BAB49B02)
关键词
硅酸钙
焦化废水
预处理
动态吸附
COD
NH3-N
去除率
calcium silicate
coking wastewater
pre-treatment
dynamic adsorption
COD
NH3-N
removal rate
