微生物复合固定化颗粒特征分析及去除河水氨氮效果的研究

Characteristics analysis of composite immobilized microorganism and its ammonia nitrogen removal effect in river water

以炉渣和改性玉米芯2种基质作为吸附材料,海藻酸钠(SA)和聚乙烯醇(PVA)2种包埋剂为基本骨架,微生物为降解主体,制备得到微生物复合固定化颗粒,并分析了颗粒的物理特征、活性恢复方式、对河水中氨氮和其他氮素的去除效果。结果表明:添加不同吸附基质对固定化颗粒的影响不同;实际河水驯化是有效的活性恢复方式;微生物复合固定化颗粒反应24h后,河水中氨氮降至1mg/L以下,河水中氨氮、亚硝态氮、硝态氮和TN去除率均在90%左右,对河流中氮污染的治理有一定的意义。

Microorganism composite immobilized pellets were prepared with slag,modified corn cob,sodium al- ginate （SA）,and polyvinyl alcohol （PVA）. In this pellets,slag and modified corn cob were used as improved and ad- sobing materials,SA and PVA were used as embedding medium and basic framework,and microbial bacteria played the main pollutant removal role. The physical characteristics, activity recovery ways, ammonia nitrogen and else nitro- gen removal effect of the pellets were analysised and studied. Results showed that the kinds of adsobing materials had different influence on immbolized pellets,ammonia nitrogen in river water fell below 1 mg/L after 24 h treated by the pellets.And removal rates of ammonia nitrogen,nitrite nitrogen,nitrate nitrogen and TN were about 90%. It showed that composite immobilized microorganism had a certain significance for nitrogen pollution control in rivers.