摘要
分别采用活性污泥和惰性材料MX作为载体富集培养硝化细菌,研究了富集培养过程中生物相结构和性质变化。结果表明,在25～28℃,pH 7.5～8.5,DO 2～5mg/L,氨氮浓度100mg/L条件下,分别经过19d和15d的富集培养,可以得到硝化速率为4.18mg(NH3-N).[g(MLSS).h]-1和10.1mg(NH4+-N).[g(MLSS).h]-1的硝化细菌培养物,以惰性材料MX为载体富集培养的硝化细菌培养物硝化速率明显高于活性污泥为载体。在2种富集培养过程中,硝化细菌培养物的色泽和结构、MLSS、SV30、SVI、硝化强度和硝化速率等均呈现规律性变化且2种培养方法间表现出明显差异。
In this paper, activated sludge and inert material MX were used as carriers of nitrifying bac- teria enrichment and the change of biofacies during enrichment process were studied. The results showed that under the condition of 25--28 ℃ ,pHT. 5~8.5,DO 2~5 mg/L,ammonia nitrogen concen- tration 100 rag/L, two kinds of nitrifying bacteria consortium with nitrifying rate of 4.18 mg（NH＋ -- N） [g（MLSS） hi- and 10. 1 mg（NH＋ --N） [g（MLSS） hi-1 could obtained in 19 and 15days respectively. During the enrichment process, color, structure, SV, SVI, nitrifying intensity and nitrif- ying rate of activated sludge take on regular changes and different between two enrichment methods.
基金
水利部公益性行业科研专项资助项目(200901063)
关键词
硝化细菌
富集培养
硝化速率
活性污泥
载体
nitrifying bacteria enrichment culture nitrifying rate activated sludge carrier
