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本文就如何经济地对水玻璃旧砂进行再生的问题进行了研究。结果表明,加酸和加酸的次序可提高再生砂的质量。文章还阐述了污水的处理方法、最佳沉淀剂及其用量。
This paper studies how to economize the regeneration of water glass sand. The results show that the order of adding acid and acid can improve the quality of reclaimed sand. The article also describes the sewage treatment, the best precipitant and its dosage.