粉煤灰综合利用 FLYASHCOMPREHENSIVEUTILIZATION2013 NO.5
专题研究
粉煤灰制备多孔水处理材料的试验研究* Study on the Preparation of Porous Fly Ash Water Treatment Materials
郑楠，宋慧平，高瑞，程芳琴，薛芳斌 （山西大学资源与环境工程研究所，国家环境保护煤炭废弃物资源化高效利用 技术重点实验室，山西太原030006)
摘要：针对粉煤灰粒度细小带来的分离困难等问题，研究了一种粉煤灰制备多孔水处理材料的方法。
对成型过程 中石灰添加量、铝粉添加量、粉煤灰粒度以及搅拌速度等影响因素进行了研究。
分别考察了成型试件的吸水率、COD去 除率、氨氮去除率、抗压强度、干体积密度以及抗冻性能。
结果表明最佳制备条件为：粉煤灰：石灰：石膏：水泥：铝粉：水： 十二烷基苯磺酸钠为34.5：10.5：2：4：0.056：35：0.15，粉煤灰、石灰、石膏、水泥粒度为0.075mm，搅拌速度为400r/min。
制 得的多孔试件各项指标为：干体积密度约为540~590kg/m”，抗压强度为0.7~0.9MPa，吸水率为70%~80%，COD去除率 为22%左右，氨氮去除率为38%左右，冻融后质量损失为2.5%左右，冻后抗压强度为0.5MPa，均达到较优水平，是一种 很好的水处理材料。
关键词：粉煤灰；成型；多孔；水处理材料 中图分类号：X703文献标识码：A文章编号：1005-8249(2013)05-0015-05 Zheng Nan, Song Huiping,Gao Rui, Cheng Fangqin, Xue Fangbin （State Environmental Protection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources, Institute of Resources and Environment Engineering, Shanxi University，Taiyuan 030006,China ) Abstract:Prusmaterials made fflyahforwastewater trement tolve th prblmf separatingyashfrm solutinreultedfmit mall paticle ize,was investiatd i this sudyheiluning factor were studied in this prepatin procesuhas thedage of lim d aluminum powder, the particle size of fly ash, stiming speed and so n. The bibulous ratio, COD removal tio, H*N removal ratio, cmre sive strength,dry dnsity,and fst resistane of porus matrial were aso instigatedThe results indicated that the ptium preprati condi tions were as folows: the quality tio of fly ash,lime,psum, cment, alminumswater and sdium dodecylbenene sulfnatewas34.50.5 2:4:0.056350.15, the granulrity fly ash,lie,pu and ment was 0.75mm, and the stiing speed was 400r/minTh indies of th porous test seien were that th dry densitywas40590kg/mmpresive stenth was0.0.9MPabiblusrti as0%80%,ODe moval effciency was 22%,NHN removal effcieney was38%,quality loss ratio aftr freezethw was 2.5% and presive strength sfter frecze was 0.5MPa This porous materials prepared from fly ash are high quality waste water treatment mterials ons...
