摘要
用HCl、H2SO4等试剂对粉煤灰进行改性,制得粉煤灰吸附混凝剂,研究了改性粉煤灰对造纸废水处理的一般规律·结果表明,以φ(HCl)∶φ(H2SO4)=1∶3的混合液为改性剂改性的粉煤灰对造纸废水具有良好的吸附混凝性能,在废水COD浓度为800～1500mg/L,改性粉煤灰用量为25g/100mL,粉煤灰的粒径范围为74～83μm,pH为9～12的实验条件下,COD、BOD、悬浮物、色度的去除率分别可达81 5%、80 7%、99 1%、94%·
The ability of fly ash to treat papermaking wastewater was investigated. The results show that fly ash modified by the modification reagent of HCl∶H2SO4=1∶3 is effective to adsorb enviromental harmful elements and substance in papermaking wastewater. When concentration of COD is 800～1?500?mg/L and pH 9～12 in the wastewater, 25?g modifying fly ash with particle size of 74～83?μm mesh can remove the COD,BOD,suspended solids and chrominance by 815%,807%,991% and 94% respectively.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第8期814-816,共3页
Journal of Northeastern University(Natural Science)
基金
辽宁省重大项目(2001401043)
关键词
粉煤灰
改性
吸附作用
混凝作用
造纸废水
fly ash
modify
adsorption
concretion
papermaking wastewater
