摘要
固定化微生物技术作为一种新兴、高效的废水处理技术,为微生物的应用增添了活力。微生物载体材料的选取决定了固定化微生物技术的应用效率,PVA凝胶小球在众多载体材料中有着稳定性高、成本低廉等特点,已在众多废水处理工程中得到应用。本文介绍了PVA-硼酸化学交联法制备凝胶小球的过程,配制浓度为7% PVA,1%海藻酸钠的混合溶液,将混合溶液滴入含2%无水氯化钙交联剂的标准硼酸溶液中交联固化3 h,润洗后冷藏得到凝胶小球,具有良好的吸附细菌的性能。
Immobilized microorganism technology is a new and efficient wastewater treatment technology. It adds vitality to the application of microorganisms. The selection of microbial carrier material de-termines the application efficiency of immobilized microorganism technology. PVA-gel beads are characterized by high stability and low cost among many carrier materials. Also it has been used in many wastewater treatment projects. This text produces the process of preparing gel pellets by PVA-boric acid chemical cross-linking. In this experiment, we used the mixed solution with a PVA concentration of 7% and sodium alginate concentration of 1%. The mixed solution was dropped into the standard boric acid solution containing 2% anhydrous calcium chloride cross-linking agent and cross-linked for 3 h. The gel pellets were obtained by cold storage after running-washing and had good bacterial adsorption performance.
出处
《环境保护前沿》
2019年第1期34-37,共4页
Advances in Environmental Protection
