摘要
为研究碱性高炉矿渣对模拟酸性水的去除效果,采用酸碱改性方法,通过化学需氧量(COD)、总磷(TP)和酸碱性(pH)的判定,确定最佳改性方法及其最优条件,并对改性前后高炉矿渣进行红外光谱和XRD表征。结果表明:碱改性优于酸改性,COD和TP的去除率分别提高了5.70%和10.23%。碱性高炉矿渣氢氧化钠改性前后的较优条件都为在超声波作用下振荡时间80 min、投加量为0.4 g、温度为25℃。改性后COD和TP去除率可达79.30%和99.92%,较改性前提高了7.49%和3.42%,改性前后pH变化不大,分别为7.70和8.32。表征结果显示改性后高炉矿渣组分基本保持不变,只是提高了各组成成分的纯度。
Acidor alkaline modification methods were adopted to study the removal effect of alkaline blast furnace slag on simulated acid water,furthermore,the best modification method and its optimal condition for optimal modification were determined by the COD,TP and pH,and also were characterized with IR and XRD.The results showed that alkali modification was better than acid modification,the COD and TP removal rate was increased by 5.70%and 10.23%respectively.The best condition of alkaline ammoni-um blast furnace slag before and after modification by sodium hydroxide was oscillation time of 80 min,dosage of 0.4g and temperature of 25℃.Comparing with modification before,the COD and TP removal rate for blast furnace slag of alkali modification was increased by 7.49%and 3.42%,being up to 19.30%and 99.92%.Change of pH was little before and after modification.It was 7.70 and 8.32 re-spectively.The IR and XRD structure analysis on blast furnace slag indicated that the composition of mod-ified blast furnace slag remained basically unchanged during the modification,and only improved the puri-ty of the components.
作者
陈伟华
黄婷
CHEN Weihua;HUANG Ting(School of Chemistry and Environmental Science,Shangrao Normal University,Shangrao 334000,China;Jiangxi Provincial Research Center of Targeting Pharmaceutical Engineering Technology,Shangrao 334001,China)
出处
《电镀与精饰》
CAS
北大核心
2018年第4期42-46,共5页
Plating & Finishing
基金
江西省教育厅科技项目(GJJ161045)
江西省高等学校教学改革研究课题(JXJG-16-16-9)
校级大学生创新训练项目(2017-CX-41)
上饶师范学院大学生学术科技研究资助项目(XS201719)
关键词
高炉矿渣
酸性废水
改性
去除率
blast furnace slag
acid waste water
modification
removal rate
