水处理用纤维素基载体的降解性能

Research on Biodegradation Performance of Cellulose Carrier for Water Treatment

将实验制备的纤维素基载体填料与乙二醇二缩水甘油醚进行交联反应．研究了不同交联度的载体填料在纤维素酶溶液和城市生活污水中的降解过程。当交联度不超过13．7％时．交联度越大载体的降解速率越小，最终保留率越高。未交联载体在纤维素酶溶液和实际城市生活污水中8d后的保留率分别为8．4％和88％，而交联载体在上述两种溶液中的相应保留率分别为30％～70％和94％～96％。实验证明，交联反应可以有效地抑制降解过程．通过改变载体的史联度完全可以拉制载体的降解速率，使载体在数天至数月之内完全降解。

Using EDGE as cross-link agent, the cross-linked cellulose porous carrier was prepared, and the carrier＇s biodegradation process in cellulose enzyme solution and civil waste water was researched. Experiments reveal that, the cross-linked carrier degrades slower at a higher cross-link degree under 13.7%. After degrading for 8 d in cellulose enzyme solution and civil waste water, uncross linked carrier remains 8.4% and 88% separately, while cross-linked carrier remains 30%～70% and 94%～96%. The mechanism of the carrier＇s cross-linking andbiodegradation process was slt,died. It is substantiated that the cellulose carrier＇s degradation speed can be controlled hy adjusting cross-link degree of cellulose carrier.