木质素磺酸钙接枝改性及其在染料废水处理中的应用

The model waste water of cationic youhaocry1 yellow X-8GL dye was treated with the copolymer of lignosulfonate calcium and acrylamide.The optimization tests were conducted regarding the four effect factors,e.g.,the rate between lignosulfonate calcium and acrylamide,the amount of flocculating agent,PHvalue and the initial concentration of the dye.It was concluded that the enhancement of rate between lignosulfonate calcium and acrylamide can not only reduce the cost but also improve the decolourization rate. As a decolouring agent,the copolymer was more suitable for higher initial concentration and neutral condition.85%of decolourization rate could be obtained under suitable dosage.

聚乙烯胺替代阳离子淀粉作造纸增强剂的研究

探讨了聚乙烯胺PVAm作为湿部添加剂对浆料Zeta电位、滤水、留着等湿部性能的影响,并与湿部阳离子淀粉的使用进行了比较,并进行了PVAm取代阳离子淀粉作为纸张增干强剂的中试应用。研究结果显示:PVAm用量越大,对湿部系统提供的正电荷越多,辅助留着效果越好,在浆料Zeta电位不发生逆转的前提下,PAVm用量越多,浆料滤水效果改善越明显;PVAm可以在文化纸中取代阳离子淀粉的使用。使用PVAm替代阳离子淀粉除具有成本优势外,在不影响纸张其它指标的前提下,还可以显著降低纸张横向收缩率。