3种包埋剂固定化硝化细菌的制备与性能

采用琼脂、海藻酸钠、聚丙烯酰胺3种包埋方法制备出硝化细菌污泥固定小球,考察了成球的难易及其物理机械性能,并采用制备小球进行氨氮的降解实验。结果表明,3种固定化小球对氨氮的转化均有明显活性,琼脂固定化小球的活性最好,保存时间长,但成球较困难,聚丙烯酰胺成球容易而活性相对偏低,相比之下,海藻酸钠固定化小球的活性较高且易成球,具有较好的应用前景。

Preparation and Performance of Immobilized Nitrobacteria by Three Embedding Materials

In this work ,the nitrobacteria immobilized cells are prepared using three embedding materials ,such as agar , sodium alginate and polyacrylamide .The balling complexities and physical and mechanical properties are investigated .The prepared immobilized nitrobacteria cells are also employed to degrade the ammonia wastewater .Experimental results show that the three cells have activity to ammonia nitrogen conversion .Agar immobilized nitrobacteria cells have higher activity and longer store life ,but poor balling property .Polyacrylamide immobilized nitrobacteria cells have good balling property , but lower activity .In comparison ,sodium alginate immobilized nitrobacteria cells have both good balling property and better degradation activity ,which is prospective .