强化混凝控制有机物和残余铝的试验研究  

The Research on Enhanced Coagulation Controlling Organic Matter and Residual Aluminum in Water

作　　者：卓文珊[1] 张丽娟[1] 刘祖发[1] 蔡斯龙[1] 苏翠明[1] 戴博闻[1] 姚远[1] 刘宇[1] 

机构地区：[1]中山大学地理科学与规划学院,广东广州510275

出　　处：《中山大学学报（自然科学版）》2012年第4期129-133,共5页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金资助项目(21077138;51002196);中山大学实验室开放基金资助项目(KF201004)

摘　　要：采用强化混凝技术,研究了水力条件、混凝剂投加量和pH值等因素对混凝效果的影响。结果表明,强化混凝技术能有效地去除NOM,而且控制残余铝量不超标。TOC随Al2(SO4)3投加量的增加而显著降低,投加量大于0.2 mmol/L后,去除率基本保持稳定。在pH值为8.0时残余铝含量最低。调节pH在8.0,投加量为0.3 mmol/L,可控制水中有机物的TOC在1.4 mg/L左右,残余铝量在0.05 mg/L以下。The natural organic matter （NOM） in water may produce carcinogens in the chlorination process. It is necessary to find a highly efficient method of NOM removal. In this paper, the effects of hydraulic conditions, pH value and A1E （ SO4 ） 3 dosage on coagulation are studied with the enhanced coag-ulation technology. The results show that the enhanced coagulation technology can remove NOM efficiently, while controlling the residual Aluminum within the standard. The TOC decreases quickly with increasing A12 （ SO4 ） 3 dosage, but the removal rate remains stable when dosage is over 0. 2 mmol/L. The residual Aluminum decreases with the rising of pH value until 8.0, and then increases. The TOC of residual organic matters is controlled at about 1.4 mg/L and residual aluminum is kept below 0. 05 mg/L in water with pH value of 8.0 and A1E （ SO4） 3 dosage of 0. 3 mmol/L.

关 键 词：强化混凝 有机物 残余铝 

分 类 号：X52[环境科学与工程—环境工程]