| PHB监测A2/O工艺除磷及负荷率耦合关系的研究 |
| 摘要点击 3843 全文点击 2036 投稿时间：2007-11-22 修订日期：2008-01-26 |
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| 中文关键词 聚羟基丁酸(PHB) A2/O系统 城市污水 除磷 负荷 耦合关系 试验研究 |
| 英文关键词 PHB A2/O process municipal wastewater phosphorus removal loadings co-relation pilot scale study |
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| 中文摘要 |
| 以上海市白龙港城市污水厂初沉池污水为进水，培养驯化污泥并构建A2/O试验系统，监测PHB消耗、生成的动态变化，并分析其与除磷和BOD5负荷率的耦合关系.结果显示，曝气池中PHB的消耗与除磷呈现良好的正相关关系(p<0.05)，平均消耗约140 mg左右的PHB可去除1 mg P；厌氧池中PHB的生成与释磷存在着极显著的正相关关系(p<0.01)，平均释放1.17 mg的磷可生成约100 mg的PHB；厌氧池中PHB的含量与系统F/M的正相关性显著(p<0.05)，负荷为0.176 g/(g·d)较负荷0.413 g/(g·d)下PHB的生成量平均减少约4 mg/g(以MLSS计)；PHB的合成与厌氧池中BOD5的去除量的相关性较差(p>0.05)，但与温度呈极为显著的正相关关系(p<0.01)，温度的升高有助于微生物合成PHB，最高温度(33.2℃)比最低温度(17.1℃)活性污泥中PHB含量约增加5 mg/g(以MLSS计)，占总量的20%左右. |
| 英文摘要 |
| In a pilot-scale anaerobic-anoxic-oxic experimental system for municipal wastewater treatment, PHB consumption in an oxic tank and PHB production in an anaerobic tank had been monitored overtime, and relations among PHB consumption/production, phosphorus removal/release and BOD5 loading had been analyzed. The results indicated that the consumption of PHB was positively related with phosphorus removal, and about 140 mg PHB consumption could result in 1 mg P removal. In the anaerobic tank, about 1.17 mg P release could result in 100 mg PHB production. The PHB production at the loading of 0.176 g/(g·d) was 4 mg/g MLSS less than that at 0.413 g/(g·d). No significant relevance was observed between PHB and BOD5 removal. The PHB of microorganism synthesizes was increased with the increase of temperature. Compared with the lowest temperature (17.1℃), 20% of the total PHB content was increased at the maximum temperature (33.2℃) in active sludge. |
