摘要
本文研究了胞外多聚物(ECP)在污泥颗粒化过程中的作用。试验采用小试UASB反应器,以人工葡萄糖配水作为进料。测定结果表明,在颗粒污泥培养过程中,随着颗粒污泥的形成、生长和成熟,污泥ECP含量逐渐下降,从开始的6.36减小到30mg/gVSS。当反应器酸化、污泥性能变差或运行不稳定时,ECP含量则表现为急剧上升,达70mg/gVSS。这些结果说明污泥颗粒化过程中ECP所起的作用不大。对有关ECP的影响及作用机理,以及污泥颗粒化机制,文章进行了分析讨论。
The effect of extracellular polymers (ECP) on granulation of sludge was in igated. Granular sludge was cultivated in a laboratory scale UASB reactors with synthetic glucose wastewater as feed. The results showed that the ECP of sludge decreased simultaneously from 56.36 to 30 mg/gVSS with the formation and growth of granular sludge during the granulation process. When the UASB reactors were operated under soured condition, the characteristics of granular sludge became bad, and however ECP increased to reach approximately 70 mg/gVSS. These phenomena of ECP measurements indicates that ECP maybe play a less role in granulation process of sludge for UASB reactor. The effect and mechanism of ECP in bacterial adhesive reaction and granulation were discussed.
出处
《中国沼气》
北大核心
1993年第3期5-10,共6页
China Biogas
基金
国家青年自然科学基金资助
