不锈钢膜超滤澄清甲壳素碱煮废水的研究  

Clarification of alkali chitin wastewater by stainless steel ultrafiltration membrane

作　　者：赵黎明[1] 赵鹤飞[1] 夏文水[1] 

机构地区：[1]食品科学与技术国家重点实验室,江南大学食品学院,江苏无锡214122

出　　处：《食品工业科技》2009年第7期65-68,73,共5页Science and Technology of Food Industry

基　　金：国家"863项目"(2006AA09Z444);PCSIRT0627;"111项目"(B07029);广东省教育部产学研项目(2007A090302059)

摘　　要：不锈钢膜澄清甲壳素碱煮废水,为掌握膜通量衰减规律以及膜对料液中非碱固形物、悬浮固形物的截留规律,用5批次不同浓度的蟹壳碱煮液,全循环模式下进行变跨膜压差(TMP)实验,发现TMP小于3·1bar时为压差控制区,大于3·1bar时为浓差极化阻力控制区。在压差控制区内,膜通量随TMP增大而增大。TMP控制在3·1bar,料液温度控制在70℃,平均膜通量随料液初始浓度减小而增大,分别为108·15、136·65、171·48、187·09、228·57L·m-2·h-1,非碱固形物的截留率随时间的增加而增大。滤液的悬浮固形物含量均在0·01%以下,证明不锈钢超滤膜技术可以高效澄清甲壳碱煮液,截留全部悬浮固形物。This work was to explore the relationship between stainless steel membrane flux and retention of non- alkali solids and suspended solids,and five batches of the different concentration of chitin alkali wastewater were used.The curves of flux trans-membrane pressure（TMP） were obtained by variable TMP differential tests by total cycle mode.It was pressure-controlled when TMP was less than 3.1bar,and concentration polarization resistance controlled when TMP was greater than 3.1bar. Under pressure-controlling, the flux increased as the increment of TMP.When the TMP was set to 3.1bar, and the feed temperature was controlled at about 70℃, the average flux decreased as the increment of initial feed concentration, and was 108.15, 136.65, 171.48, 187.09 and 228.57L· m-2· h -1, respectively. The retention of non- alkali solids was increased as time consuming. The suspended solids（SS） in permeate was below 0.01%, indicating that the SSM can efficiently clarify chitin alkali wastewater,and SS can be completely rejected.

关 键 词：甲壳素废碱液 不锈钢膜 氢氧化钠 超滤 膜污染 

分 类 号：TS201.2[轻工技术与工程—食品科学]