简述了铝盐回收的主要方法，分别为酸溶法、碱溶法、离子交换法和膜分离法，对每一种方法的原理和特点作了介绍。
The principles and characteristics were briefly described on the methods of acid dissolution, alkali dissolution, ion exchange and membrane separation for aluminum salt recovery.
方法醇类溶剂提取法、离子交换树脂分离法。
Methods Alcohol and strong acid cation exchange resin were used in the extraction and separation.
降氟除砷是改善水质、预防地氟病、地砷病的根本措施，主要有混凝沉淀法、吸附法、离子交换法、膜分离法等。
Lowering fluoride concentration and removing arsenic from drinking water is an effective measure to improve water quality and prevent sickness related to fluoride and arsenic.
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