| 吴昌生,徐锐,刘绍根.温度对碱预处理絮凝污泥水解酸化影响研究[J].安徽建筑大学学报,2016,24(1):59-64 |
| 温度对碱预处理絮凝污泥水解酸化影响研究 |
| Effects of Temperature on Flocculation/Adsorption Sludge Hydrolysis and Acidification by Alkaline Pretreatment |
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| DOI：10.11921/j.issn.2095-8382.20160113 |
| 中文关键词: 水解酸化 生物絮凝吸附污泥 发酵 碳源 |
| 英文关键词: hydrolysis and acidification bio-flocculation/adsorption sludge fermentation carbon source |
| 基金项目:国家自然科学基金资助项目（51278002） |
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| 中文摘要: |
| 采用4组构造相同的完全混合流态水解酸化反应器，以同等浓度的生物絮凝吸附污泥作为底物污泥，初始pH值为10，分别在温度为15℃、25℃、35℃、45℃的反应条件下，研究温度对生物絮凝吸附污泥水解酸化产物及产率的影响。试验结果表明：温度的升高加速了生物絮凝吸附污泥水解酸化。45℃时，SCOD第5天即达到最大产量3976.3mg/L，同时VFAs也达到峰值1988.5mg/L。随着温度的升高，最大浓度VFAs组分中，乙酸和丙酸比重不断增加。45℃时，VFAs组分中乙酸、丙酸分别高达51.25%、26.32%。此外，4组反应温度下，生物絮凝吸附污泥产酸发酵获得碳源的同时均伴随着氮、磷元素的释放，且温度越高，释放越明显。整体而言，35℃反应条件下，生物絮凝吸附污泥水解酸化既可为脱氮系统提供较多的碳源，又能避免过高的溶出氮、磷负荷。 |
| 英文摘要: |
| The effect of temperature on the bio-flocculation and adsorption sludge hydrolysis and acidification was investigated through applying four configuration-consistent and completely mixed pattern of hydrolysis acidification reactors. The four reactors were fed with bio-flocculation and adsorption sludge with the same contents. The experiments were performed under the conditions of 15℃, 25℃, 35℃, 45℃ respectively and initial pH is 10. The results show that the hydrolysis and acidification of bio-flocculation/adsorption sludge speeds up when temperature rises. Under the condition of 45℃,after 5 days SCOD achieves its maximum of 3976.3mg/L, and 1988.5mg/L VFAs are produced and peaked. With the temperature rising, among the maximum concentration of VFAs components the proportions of acetic acid and propionic acid also grow, reaching 51.25% and 26.32% respectively. Besides, under the four conditions of different temperatures, the carbon source production through the hydrolysis and acidification of bio-flocculation and adsorption sludge are accompanied with the release of nitrogen and phosphorus. The higher the temperature is, the more obvious the release is. In general, 35℃ is the perfect condition under which the hydrolysis and acidification of bio-flocculation and adsorption sludge can not only provide nitrogen removal system with more carbon source, but also can avoid excessive release of nitrogen and phosphorus. |
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