本文研究了褐藻酸钠与Cu2+, Pb2+交换行为，通过海藻酸钠溶液与Cu2+, Pb2+的絮凝，测得两种离子最大交换量。考察了褐藻酸钠固体粉末与Cu2+, Pb2+在不同的反应条件下的离子交换与吸附行为。实验表明pH值，温度，时间，配比等条件是影响交换与吸附的因素，其吸附行为在一定的温度和一定的浓度范围内能较好的符合Freundlich等温吸附式 In this paper, the exchange behavior of sodium alginate with Cu2 + and Pb2 + was studied. The maximum exchange capacity of two ions was measured by the flocculation of sodium alginate solution with Cu2 + and Pb2 +. The ion exchange and adsorption behavior of sodium alginate solid powder with Cu2 + and Pb2 + under different reaction conditions were investigated. Experiments show that pH, temperature, time, ratio and other conditions affect the exchange and adsorption factors, the adsorption behavior at a certain temperature and a certain concentration range can be better in line with Freundlich isothermal adsorption