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水处理过程中广泛使用铝盐絮凝,去除浊度及溶解性总有机碳(DOC)很有效,但导致出水中铝浓度升高,引起人们的关注。出水含高浓度余铝,表明絮凝剂用量不当,未能有效地利用或者是化学反应有问题。采取分类预处理试样法测定铝,可为水厂提供有价值的数据。目前铝不是常规监测项目,但美国环保局拟建议饮用水中铝的限值为0.05mg/L。在水处理过程,85％以上的铝以溶解状态存在。在这种混合物中52％为单体Al(OH)_3、29％与DOC复合,19％与氟化物络合。美国91个使用硫酸
Aluminum salts are extensively used in water treatment to flocculate and remove turbidity and dissolved total organic carbon (DOC). However, the concentration of aluminum in effluent is very high, arousing people’s attention. The effluent contains high concentrations of aluminum, indicating that the amount of flocculants inappropriate, failed to effectively use or chemical reaction problems. Taking the pretreatment sample method for the determination of aluminum can provide valuable data for waterworks. At present, aluminum is not a regular monitoring project, but the EPA recommends a limit of 0.05mg / L for aluminum in drinking water. In water treatment, more than 85% of the aluminum is in solution. In this mixture, 52% of monomer Al (OH) _3, 29% compound with DOC, 19% complex with fluoride. 91 US uses sulfuric acid