摘要
对含藻类水采用高铁酸盐强化混凝去除消毒副产物及其前体物的影响因素与预氯化进行了对比 ,结果表明 :投加 0 .42、0 .84、1 .40mg/L的高铁酸盐再与 30mg/L的聚合铝联用 ,对TOC为 6 .2mg/L的含藻类源水强化混凝的TOC去除率分别为 2 9.8%、32 .6 %、33 .5 % ,比单纯投加 50mg/L的聚合铝都高 ,显示高铁酸盐在一定用量范围内用量越大 ,强化混凝对TOC的去除率也越高 ;当高铁酸盐投加量一定时 ,水样的 pH值在 5～ 6之间时 ,强化混凝对TOC的去除率最高 ;高铁酸盐强化混凝的效果比预氯化好 ,并且产生THMS的量明显比预氯化少 ,是一种可取代预氯化对含藻类水处理的新药剂。
Ferrate is used as a coagulant for removing byproducts and their precursors in potable water, which have been generated during the disinfection process using chlorine. The experimental study is conducted based on jar tests with the measurements of TOC, THMs and THMsFP. Ferrate is added followed by dosing PAC and removal of TOC is compared with that of using single PAC, indicating the efficacy of ferrate for removals of TOC and others. The study shows ferrate in lieu of pre-chlorination to enhance coagulation is an ideal alternative for treatment of raw water containing high concentration of algae.
出处
《环境科学与技术》
CAS
CSCD
2004年第2期66-68,共3页
Environmental Science & Technology
