树脂吸附法处理磺胺脒生产废水的工艺

针对磺胺脒生产废水的特点,本研究确定了采用树脂吸附法回收磺胺、进一步回收硝酸钠的工艺流程,探讨了树脂对磺胺吸附-解吸的最佳工艺条件.结果表明:DRHⅢ型大孔吸附树脂对磺胺具有良好的吸附-解吸效果,能将有机物和无机物很好地分离.经树脂吸附处理后,废水中COD去除率86%,硝酸钠回收率95%,磺胺回收率86%,其纯度达99.8%.在废水有效处理的同时实现了废物资源化,具有良好的环境效益和较高的经济效益.

Treatment of Sulfanilamide Production Wastewater by Resin Adsorption Technique

According to the character of sulfanilamide production wastewater, in this paper, the recovery process of sulfanilamide, sodium nitrate in wastewater resulting from manufacturing sulfanilamide was developed by using macro porous resin. The conditions of the resin adsorption and desorption capacity were investigated and the optimal parameters were determined. The results of experiment indicated that this technique was suitable for removal of sulfanilamide from wastewater. About 86% COD removal was obtained under the optimized adsorption conditions, about 86% sulfanilamide and 95% sodium nitrate were recovered from wastewater for possible recycling to the manufacturing process and the recovered sulfanilamide's purity reached 99.8%. The adsorption capacity of resin remained constant during the repetition process of adsorption and desorption. This technique not only eliminates the environmental pollution but also obtain distinct economic benefit.