聚硅酸硫酸铁处理垃圾渗滤液的研究  

Study on Treating Landfill Leachate by Polyiron Silicate Sulfate Flocculants

作　　者：郑晓虹[1] 陈顺玉[1] 钟超阳[1] 扬桦[1] 陈震[1] 

机构地区：[1]福建师范大学化学与材料学院,福建福州350007

出　　处：《化工时刊》2004年第11期47-49,52,共4页Chemical Industry Times

基　　金：福建省教育厅科研项目 (JB0 31 32 )

摘　　要：土地填埋是我国城市生活垃圾处置的主要方式 ,填埋场渗滤液的处理是垃圾填埋的关键问题。本文用硫铁矿烧渣和硫酸铝渣制得的聚硅酸硫酸铁 (PFSS)处理垃圾填埋场渗滤液生化处理尾水。实验结果表明 :将渗滤液pH值调至 6左右 ,用铁硅比为 1 5的PFSS处理渗滤液生化处理尾水 ,用量为 5 0～ 7 0mL/L时 ,去浊率可达 90 % ,CODCr去除率达 6 5 %以上 PFSS的处理效果与PFSS中Fe2 O3 与SiO2 含量有关。The refuse landfill is a main way of disposing refuses in China.The disposal of landfill leachate is the key problem of landfill.The polyiron silicate sulfate flocculants(PFSS) from pyrite cinder and bauxite sludge were used to treat landfill leachate after anaerobic and aerobic processes.The effects of the molar ratio of iron and silica,quantity of PFSS and pH of leachate on disposal of leachate were investigated.The results showed that removal rate of turbidity was above 90% and removal rate of COD_ Cr was above 65% of the landfill leachate by adding 5.0-7.0mL/L PFSS with molar ratio 1.5 of Fe and SiO_2.The flocculent effect of PFSS is related to mass concentration of Fe_2O_3 and SiO_2.

关 键 词：垃圾渗滤液 生化处理 硫酸铁 垃圾填埋 CODCR去除率 城市生活垃圾 填埋场 聚硅酸 SIO2含量 硫酸铝渣 

分 类 号：X705[环境科学与工程—环境工程]