利用粉煤灰深度处理焦化废水的研究  

Research on Advanced Treatment of Coking-plant Wastewater by Fly Ash

作　　者：周静[1] 李素芹[1] 苍大强[1] 杨虹[1] 

机构地区：[1]北京科技大学冶金与生态工程学院教育部生态与循环冶金重点实验室,北京100083

出　　处：《中国资源综合利用》2007年第10期19-21,共3页China Resources Comprehensive Utilization

摘　　要：利用粉煤灰作吸附剂,结合石灰对焦化废水进行深度处理,考察了pH值、药剂投加量、吸附时间等因素对处理效果的影响,得出最佳处理条件为:废水pH值为5左右时,每100mL废水中加入粒径为100目以上的粉煤灰15g,生石灰0.25g,吸附时间为1h。处理后焦化废水的COD可达污水综合排放标准(GB8978-96)中一级排放标准,NH3-N可达污水综合排放标准(GB8978-96)中二级排放标准。Fly ash and calcareousness are recycled as sorbent in treating the coking-plant wastewater.The influence factors as pH value of wastewater,dosage of sorbent and adsorption time are investigated in treating coking-plant wastewater.The optimum condition is that the appropriate pH value is about 5 the adding amount of fly ash is 15 g/100 mL with the particulate size above 100 mesh the dosage of calcareousness is 0.25g/ 100 mL and the adsorption time is one hour.After treatment the COD of the wastewater accords with the national first standard and the NH3-N accords with the national second standard.

关 键 词：粉煤灰 再利用 焦化废水 深度处理 吸附 

分 类 号：X703[环境科学与工程—环境工程]