摘要
以水玻璃、硫酸铁和硼砂为原料制备了无机高分子混凝剂含硼聚硅酸硫酸铁 (PFSSB) ,最佳制备条件为 :Fe/Si摩尔比 0 .5 ,B/Si摩尔比为 0 1 55 ,活化pH值 2 .0 ,活化时间 1h。PFSSB为带状结构 ,具有优良的稳定性和混凝特性 ,稳定时间为 66～1 2 7天。用PFSSB处理废纸造纸废水和印染废水 ,各项指标达到国家一级排放标准 (GB8978— 1 996)。
Coagulant PFSSB (polymeric ferric silicate sulfate containing boron) is prepared using water glass, ferric sulfate and borax as raw materials. Optimal preparation conditions are as follows: Fe/Si molar ratio 0 5,B/Si molar ration 0.155, activation pH value 2.0 and activation time 1 h. PFSSB has a banded structure featuringexcellent properties of stability and coagulation. It can be kept stable for 66～127 days. Waste water from wastepaper based paper making and waste water from dyeing can be treated by PFSSB to meet the national first grade emission standard (GB8978—1996).
出处
《现代化工》
EI
CAS
CSCD
2000年第11期42-44,46,共4页
Modern Chemical Industry
