粉煤灰深度处理焦化废水中氨氮的研究  

RESEARCH ON ADVANCED TREATMENT OF NH_3-N IN 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：《能源环境保护》2007年第6期30-32,共3页Energy Environmental Protection

摘　　要：利用粉煤灰-石灰体系作吸附剂,对焦化废水中氨氮进行深度处理,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100 mL废水中加入粒径为100目以上的粉煤灰15 g,生石灰0.25 g,吸附时间为1h。处理后焦化废水的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 chosen as sorbent in treating NH3- N of coking -plant wastewater. The influence factors as pH value of wastewater, dosage of sorbent and adsorption time are investigated in treating coking- plant w astewater. 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 NH3-N of the wastewater accords with the national second standard.

关 键 词：粉煤灰 氨氮 焦化废水 吸附 

分 类 号：X703[环境科学与工程—环境工程]