摘要
以硫酸铁、聚硅酸为前驱物，合成了一系列不同碱化度B值与％（Fe）／n（Si）（Fe与Si的摩尔比）的聚硅硫酸铁（PFSiS），利用Fe-Ferron逐时比色法研究了其中铁形态分布．对高岭土模拟水样的除浊实验结果显示，采用B=1．0，n（Fe）／n（Si）-5．0的PFSiS，在投加量为4mg／L条件下，浊度去除率可达到99．5％以上．FTIR分析结果说明，Si参与了Fe（In）的水解过程，且随n（Fe）／n（Si）的降低，使得1240，998和1080cm-1等处的吸收峰增强．采用该配比的絮凝剂对实际稠油污水进行处理，在pH=5～7，投加量55～80mg／L范围内，油的去除率可达到96％～98％．在pH=5～10，投加量〉70mg／L的条件下，COD去除率可达65％以上．在实际应用时，可根据需要进行投加量、PH的调节，以达到相应的油和COD去除率，为进一步生化处理创造条件．
QI Pei-shi, LI Li-jun, LIU Yun-zhi, ZHAO Jun-jie （State Key Laboratory of Urban Water Resources and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, China） Abstract. A series of Poly Ferric Silicate Sulphate （PFSiS） at different alkalinities B and mole ratios Fe/Si were prepared using ferrous sulfate and activated silicate as precursor substance. The species distribution of PFSiS were studied by Fe-Ferron timed completing spectrophotome- ter. Furthermore, turbidity removal efficiency of PFSiS in treating kaolin suspension was in- vestigated. The results show that when B=I. 0, n（Fe）/n（Si）-=5. O, dosage.4 mg/L（as Fe）, more than 99.5% of turbidity was removed by using the PFSiS. Moreover, FTIR analysis indi- cated that Si participated hydrolytic process of Fe（I]]） and absorption peaks at 1 240, 998 and 1 080 cm-1 were enhanced with decreasing of n（Fe）/n（Si）. Finally, oil and COD removal effi- ciency of PFSiS （B= 1.0, n（Fe）/n（Si）= 5.0） in treating heavy oil wastewater was evaluated. The results show that when pH=5--7 and dosage. 55--80 rag/L, oil removal efficiency in the range of 96%--98% and more than 65% of COD was removed at pH=5-10 and dosage greater than 70 mg/L conditions. In actual application, the value of pH and dosage could adjust to satisfy the demands of removal efficiency for biological treatment.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2009年第6期878-883,共6页
Journal of China University of Mining & Technology
基金
国家高技术研究发展计划(863)项目(2008AA06A411)
关键词
絮凝剂
聚硅硫酸铁
除浊
聚合
稠油污水
focculant
polyferric silicate sulphate
turbidity removal
polymer
heavy oil wastewater
作者简介
作者简介：祁佩时（1955-），男，黑龙江省哈尔滨市人，教授，博士生导师，工学博士，从事环境工程方面的研究E-mail；qipeishi@163．com Tel：0451—86282107
