海藻酸钠包埋脱氮菌株工艺研究  

Immobilization of a Denitrification Strain by Sodium-aliginate

作　　者：酒卫敬[1] 汪苹[1] 李奥搏[1] 李金穗[1] 其其格[1] 

机构地区：[1]北京工商大学食品学院,北京100048

出　　处：《北京工商大学学报（自然科学版）》2011年第3期51-54,58,共5页Journal of Beijing Technology and Business University:Natural Science Edition

基　　金：国家科技支撑计划项目(2007BAK36B07);国家高技术产业发展项目(味精行业高浓度废水处理关键技术高技术产业化示范工程)

摘　　要：选用海藻酸钠作为包埋剂,4%CaC l2作为交联剂.通过正交试验和单因素实验,研究了包菌量,海藻酸钠(SA)质量分数,交联时间和小球直径4个因素对海藻酸钠包埋菌株的脱氮性能的影响,以氨氮去除率和总氮去除率为指标,优选包埋条件.在实验范围内的最佳包埋条件下,包埋的脱氮菌株的脱氮性能与其游离状态下的脱氮性能相当.The mechanical strength of immobilized beads was enhanced using sodium alginate as the em- bedding agent and CaCl2 as the crosslinking agent. Orthogoal experiments and one-factor experiments were designed to optimize the immobilization conditions. The effects of quantity of entrapmenting bacteria, concentration of sodium alginate, crosslinking time, and diameter of the immobilized beads on the immo- bilization were studied. Under optimum conditions, the nitrogen removal ability of immobilized bacteria was similar to that of dissociation bacteria.

关 键 词：固定化 包埋 海藻酸钠 

分 类 号：TS208[轻工技术与工程—食品科学] TS264.23[轻工技术与工程—食品科学与工程]