摘要
通过草浆废液的超滤浓缩实验，测定了荻苇亚硫酸氢镁红液、麦草Ｓｏｄａ－ＡＱ黑液和稻草硫酸盐黑液超滤浓缩的固形物上限浓度分别为２６．１２％、２７．３３％和３１．５２％。在废液浓度较低时，由于水通量大，超滤浓缩能耗低的优势尤为明显。超滤用于废液的预浓缩具有显著的经济效益。
Concentration of nonwood pulping spent liquor by means of ultrafiltration was studied. The maximum solid contents that could be achieved by ultrafiltration concentration, were determined as 26.12%, 27. 33% and 31. 52% separately. The results showed that the power consumption of ultrafiltration was 80%～90% lower than that of evaporation for removing the same amount of water. It was concluded that the ultrafiltration preconcentration combining with multi-effect evaporotion was a power-saving concentration procedure for black liquor.However, it was an uneconomic and very difficult process to concentrate the nonwood pulping spent liquor to high solid content by ultrafiltration alone.
出处
《中国造纸》
CAS
北大核心
1995年第3期27-30,共4页
China Pulp & Paper
基金
轻工业科技发展基金
关键词
草浆
废液
超滤
浓缩
动力消耗
造纸工业
nonwood pulping spent liquor,concentration,ultrafiltration,power consumption
