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随着现代化的戈弗氧化铝厂的投产,瑞士铝业公司对于排放赤泥实现了在技术上要求严格并且对于环保一劳永逸的解决办法:即洗涤过滤完的赤泥要送到专用设备中进行多次彻底洗涤,以确保完全除净赤泥中碱液的办法。然后将部分带水的赤泥泵入一个用堤坝筑成的面积为0.5～1平方公里的沉淀池中。固体物料在沉淀池中沉淀后,上层的液体被不断地抽出再返回到洗涤工段。通过这样的再循环,能使赤泥循环中的液体量实际上保持恒定。在沉淀池中残留于赤泥中的水分由于当地炎热的大气条件而完全蒸发。就是大量的降雨也不会因此而使水
With the commissioning of the modern Gover Alumina plant, the Swiss Alcoa- tion has met the technically demanding and environmentally-friendly solution to the red mud emission: once the cleaned and filtered red mud has been sent to dedicated equipment for more Wash thoroughly to ensure complete removal of the red mud in the lye method. Then part of the red mud with water pumped into a dam built into an area of 0.5 to 1 square kilometers of sedimentation tank. After the solid material settles in the sedimentation tank, the upper liquid is continuously drawn out and returned to the scrubbing section. By this recirculation, the amount of liquid in the red mud circulation can be kept virtually constant. The water remaining in the red mud in the sedimentation basin evaporates completely due to the hot, atmospheric conditions in the area. Is a lot of rainfall will not cause water