中文摘要：

以环氧氯丙烷和二乙烯三胺反应合成1种高分子聚胺（以下简称PED），采用FTIR，DSC-TG，EDX和SEM等方法对产物进行结构表征，并考察合成的高分子聚胺PED水溶液中硫酸根离子的脱除能力。研究结果表明：聚合产物PED热稳定性随产物氨基含量增加而增大，热分解温度可达285℃：产物PED对硫酸根有很强的脱除能力，其中，产物投加量的增加和酸性条件均有利于硫酸根脱除率的提高：在中性和酸性溶液中（硫酸根离子质量浓度为2．0g／L），产物脱除硫酸根达到平衡的时间分别为30min和10min;当反应时间为30min时，在中性和酸性水溶液中硫酸根脱除率分别可达90．2％和99．6%,产物吸附量分别为175mg／g和191mg／g;处理后水溶液中硫酸根离子质量浓度降为196mg／L和8mg／L，均远低于国家生活饮用水卫生标准的250mg／L（GB3838-2002）要求。

英文摘要：

Polyamine macromolecule PED was synthesized by condensation polymerization of epichlorohydrin and diethylenetriamine. As-prepared granule of PED was characterized by FTIR, DSC-TG, EDX, SEM and the sulfate removal performance of PED in aqueous solutions was studied. The results show that thermo-stability of the products increases with the increase of amine content, and the decomposition temperature can reach 285 ℃. The sulfate removal capability of PED is strong. The process equilibrium time is 30 min and 10 min respectively in neutral and acidic aqueous solutions containing 2.0 g/L sulfate ions. When the reaction is kept for 30 rain, the removal ratio of sulfate ions can reach 90.2% and 99.6% in neutral and acidic solutions with the absorption capacity 175 mg/g and 191 mg/g, respectively, while the sulfate concentrations of the filtrate are 196 mg/L and 8 mg/L, respectively, which are both lower than the demand of 250 mg/L of GB 3838-2002.