摘要
研究了联用硅藻土与聚合氯化铝(PAC)强化混凝对有机微污染原水中不同性质溶解性有机物的去除效果。采用超滤膜和XAD系列树脂对微污染原水中溶解性有机物进行分级表征,物理分级表明分子量<4 kD的溶解性有机物占50%以上,化学分级表明原水中以憎水酸(HoA)和亲水物质(HiM)为主。硅藻土助凝去除溶解性有机物,实验结果表明,当PAC投加量30 mg/L,硅藻土投加量0.5 g/L时,溶解性有机碳去除率由22.5%提高到26.3%。
The removal of dissolved organic matter（DOM） from the slightly polluted surface water by the combination of PAC and diatomite was investigated.The DOM from raw river was fractionated and characterized by resin adsorption（RA） and ultrafiltration（UF） techniques.The physical distribution of the DOM is that the fraction with molecular weight below 4 kDa is more than 50%.The results showed that the molecular weight below 4 kDa was the main DOM in the water sample.The chemical fractions distribution of the DOM is that the hydrophobic acids（HoA） and the hydrophilic matter（HiM） are richer than others.The combination of PAC and diatomite removed DOM,the DOC removal rate was improved from 22.5% to 26.3 % with 30 mg/L PAC combining 0.5 g/L diatomite.
出处
《环境工程学报》
CAS
CSCD
北大核心
2012年第11期3919-3922,共4页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(51078148
41173103)
关键词
硅藻土
聚合氯化铝
溶解性有机物
超滤膜
树脂分级
diatomite
polyaluminum chloride
dissolved organic matter
ultrafiltration membrane
resin fractionation
