| 厌氧生物法处理果胶废水的研究 |
| 摘要点击 1557 全文点击 771 投稿时间：2013-05-28 修订日期：2013-09-02 |
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| 中文关键词 厌氧 果胶废水 降解速率 去除率 中间产物 |
| 英文关键词 anaerobic pectin wastewater degradation rate removal efficiency intermediate products |
| 作者 | 单位 | E-mail | | 陈兵兵 | 湖南大学环境科学与工程学院, 长沙 410082
环境生物与控制教育部重点实验室(湖南大学), 长沙 410082 | chenbing@hnu.edu.cn | | 杨春平* | 湖南大学环境科学与工程学院, 长沙 410082
浙江工商大学环境科学与工程学院, 浙江省固体废物处理与资源化重点实验室, 杭州 310018
环境生物与控制教育部重点实验室(湖南大学), 长沙 410082 | yangc@hnu.edu.cn | | 黎想 | 湖南大学环境科学与工程学院, 长沙 410082
环境生物与控制教育部重点实验室(湖南大学), 长沙 410082 | | | 代传花 | 湖南大学环境科学与工程学院, 长沙 410082
环境生物与控制教育部重点实验室(湖南大学), 长沙 410082 | | | 彭蓝艳 | 湖南大学环境科学与工程学院, 长沙 410082
环境生物与控制教育部重点实验室(湖南大学), 长沙 410082 | |
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| 中文摘要 |
| 采用经果胶废水驯化的厌氧污泥处理果胶废水，考察了果胶浓度、温度对厌氧去除果胶和COD的影响，并对降解产物进行了分析. 结果表明，与未驯化厌氧污泥处理果胶废水相比，驯化后的污泥对果胶去除率提高了59.2%. 果胶浓度分别为100、2500和4500 mg·L-1时，果胶降解速率分别为4.5、49.8和 74.0 mg·（L·h）-1，说明果胶浓度越高，降解速率越快. 果胶浓度低于500 mg·L-1，COD去除率较低，仅为41.6%~82.0%，果胶浓度高于1000 mg·L-1，COD去除率稳定在91%以上. 温度越高，降解果胶所需的时间越短.随着温度在5~35℃范围内变化，厌氧污泥对果胶废水中COD的去除率从38.6%逐渐增加到91.5%，当温度高于35℃时，厌氧污泥对果胶废水中COD的去除率逐渐降低. 果胶降解的中间产物主要是乙酸、丙酸、低级酯、烷基醇（C12~C40）. |
| 英文摘要 |
| Anaerobic biological process was used to treat pectin wastewater with acclimated sludge. The effects of the influent pectin concentration and the degradation temperature were investigated, and the intermediate products in pectin degradation were measured. Compared with the unacclimated sludge, the results showed that using acclimated sludge, the pectin removal efficiency was increased by 59.2%. The degradation rate of pectin at influent concentrations of 100, 2500 and 4500 mg·L-1 were 4.5, 49.8 and 74.0 mg·(L·h)-1, respectively, indicating that the degradation rate increased with the increase of the influent pectin concentration. The COD removal efficiency was relatively low (41.6%-82.0%) when the influent pectin concentration was lower than 500 mg·L-1, but it could maintain above 91% when the influent pectin concentration was beyond 1000 mg·L-1. The higher the temperature was, the shorter the time was needed for pectin degradation. The COD removal efficiency of anaerobic sludge for pectin wastewater was increased from 38.6% to 91.5% when the temperature ranged from 5℃ to 35℃, but it was gradually weakened when the temperature exceeded 35℃. The main intermediate products in pectin degradation were supposed to be acetic acid, propionic acid, lower ester, and alkyl alcohols (C12-C40). |
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