降低废水COD负荷的机械浆漂白  

The Bleaching of Mechanical Pulp with a Lower Effluent COD Load

作　　者：劳嘉葆[1] 

机构地区：[1]陕西科技大学,陕西咸阳712081

出　　处：《纸和造纸》2004年第1期36-37,共2页Paper and Paper Making

摘　　要：机械浆H2O2漂白要求在碱性条件下进行,会引起废水COD增高。用Mg(OH)2代替NaOH作碱源,表明:①废水COD降低30%～40%;②Mg(OH)2需要量约为NaOH需要量一半,③硅酸钠的需要量可以减少到0.5%左右。Peroxide bleaching of mechanical pulp requires alkaline conditions,which cause an increase of the effluent COD.Magnesium hydroxide could be applied as an alternative to sodium hydroxide as the alkali source.The application of magnesium hydroxide has been shown:①The effluent COD decreases by about 30%to 40%,②The demand for Mg(OH)2 is about half that for NaOH,③The demand for sodium silicate can be lowered to about 0 5%.

关 键 词：漂白机械浆 废水处理 造纸工业 COD MG(OH)2 

分 类 号：TS745[轻工技术与工程—制浆造纸工程]