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CN103304059A 一种冶炼烟气制酸工艺中酸性废水的处理系统及方法 无效 - 驳回

一种冶炼烟气制酸工艺中酸性废水的处理系统及方法
摘要：
本发明提供了一种硫酸制酸工艺中酸性废水处理系统及利用该系统进行的硫酸制酸工艺中酸性废水的处理方法，所述系统包括依次连接的一级反应釜、二级反应釜、三级反应釜、渣罐及渣浆泵，所述一级反应釜、二级反应釜、三级反应釜内均带有搅拌桨；所述一级反应釜下部与二级反应釜下部之间、二级反应釜上部与三级反应釜上部之间、三级反应釜上部与渣罐之间分别通过第一连通管、第二连通管及溢流管相连接，所述第一连通管还连接有硫化钠泵及硫化钠储罐，所述第二连通管上还连接有硫酸亚铁泵及硫酸亚铁储罐。本发明能够有效去除酸性废水中的砷以及铜、铅、镉等重金属离子。
摘要（英）：

The invention provides a system for treating acidic wastewater in a sulfuric acid making process and a method for treating the acidic wastewater in the sulfuric acid making process by utilizing the system. The system comprises a first-stage reaction kettle, a second-stage reaction kettle, a third-stage reaction kettle, a slag pot and a slurry pump which are connected in sequence, wherein stirring paddles are arranged in the first-stage reaction kettle, the second-stage reaction kettle and the third-stage reaction kettle; the lower part of the first-stage reaction kettle is connected with the lower part of the second-stage reaction kettle through a first communication pipe; the upper part of the second-stage reaction kettle is connected with the upper part of the third-stage reaction kettle through a second communication pipe; the upper part of the third-stage reaction kettle is connected with the slag pot through an overflow pipe; the first communication pipe is connected with a sodium sulfide pump and a sodium sulfide storage tank; and the second communication pipe is connected with a ferrous sulfate pump and a ferrous sulfate storage tank. According to the system and the method, arsenic and heavy metal ions of copper, lead, cadmium and the like in the acidic wastewater can be effectively removed.

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