反应条件对钢渣除磷的影响.pdfVIP

收稿日期：2014 -10 -08 基金项目：中央高校基本科研业务费专项资金资助项目(N130302004). 作者简介：杨 合(1970 -),男,内蒙古突泉人,东北大学副教授. 第3 6卷第 1 1期 20 1 5 年 1 1 月 东 北 大 学 学 报 ( 自 然 科 学 版 ) Journal of Northeastern University(Natural Science) Vo l.36,No.1 1 Nov. 2 0 1 5 doi：10.3969/j.issn.1005 -3026.2015.1 1.019 反应条件对钢渣除磷的影响 杨 合,王 振 (东北大学 材料与冶金学院,辽宁 沈阳 1 108 19) 摘 要：为了更好地利用钢渣具有较大的比表面积、孔隙率和密度,易于固液分离且不易形成二次污染 等特点来处理废水,确定反应条件对钢渣除磷效果的影响,对污水中磷的初始浓度、钢渣用量、钢渣粒径、温 度、pH值等因素进行了研究.研究结果表明,磷的初始浓度越大,反应平衡得越快,对除磷总量影响比较显著; 随着钢渣用量增加、钢渣粒径减小,磷去除量显著增大;钢渣对磷的去除适宜在偏酸性条件下进行,pH =4 时 去除率最高;20 ~35 ℃条件下温度对钢渣处理效果的影响较小. 关 键 词：钢渣;磷;去除率;反应条件 中图分类号：X 703 文献标志码：A 文章编号：1005 -3026(2015)1 1 -1605 -04 Effects of Reaction Conditions on Phosphorus Removal by Steel Slag YANG He,WANG Zhen (School of Materials Metallurgy,Northeastern University,Shenyang 1 108 19,China.Corresponding author： YANG He,E-mail：yangh@smm.neu.edu.cn) Abstract：Steel slag has already been used to deal With all kinds of WasteWater due to its larger specific surface area,porosity and density,its easy solid-liquid separation and not easy to form secondary pollution.In order to ensure the influence of reaction conditions on the steel slag phosphorus removal effect,many factors such as phosphorus in seWage initial concentration, dosage of steel slag,steel slag particle size,temperature,pH value Were investigated.The results shoWed that reaction equilibrium is faster When the initial concentration of phosphorus is higher, and the effects on total phosphorus removal is greater.With the increase of dosage of steel slag, the decrease of steel slag particle size,the quantity of phosphorus removal has a significant increase.Steel slag for phosphorus removal is appropriate in the acidic conditions,the rate of removal is highest When pH =4.Steel slag has a little effect on treatment effect under the condition of temperature of 20 ~35 ℃. Key words：steel slag;phosphorus;removal rate;reaction conditions 磷是导致水体富营养化的关键元素之一,磷 超标的污水随意排放可导致水体富营养化[1],破 坏生态平衡.人工湿地污水处理技术是一种通过 过滤、吸附、沉淀、离子交换、植物吸收和微生