The waste water from pulping of wheat straw was treated by using poly aluminum chloride (PAC), polymerized ferrous sulfate (PFS) and organic coagulant AIDS together.
研究采用聚铝和聚铁作絮凝剂，并加入有机助凝剂，联合作用处理麦草爆破制浆废水的混凝效果。
2
The present situation on the treatment of various smelting waste slag of non-ferrous metal industry in Chine are discussed briefly.
本文扼要讨论了我国有色金属工业中各种冶炼废渣处理的现状。
3
Non-ferrous metals are widely used in the environmental protection industry in the sludge, waste transportation, mining mineral processing industries.