厌氧生物法处理果胶废水的研究  

Treatment of Pectin Wastewater by Anaerobic Biological Process

作　　者：陈兵兵[1,2] 杨春平[1,3,2] 黎想[1,2] 代传花[1,2] 彭蓝艳[1,2] 

机构地区：[1]湖南大学环境科学与工程学院,长沙410082 [2]环境生物与控制教育部重点实验室(湖南大学),长沙410082 [3]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

出　　处：《环境科学》2014年第2期657-662,共6页Environmental Science

基　　金：国家自然科学基金项目(51278464;50778066);高等学校博士学科点专项科研基金项目(20090161110010);湖南省环保厅环保科技课题研究项目(GLTC-2011HN149)

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4500mg·L-1时，果胶降解速率分别为4．5、49．8和74．0mg·（L·h）-1，说明果胶浓度越高，降解速率越快．果胶浓度低于500mg·L-1，COD去除率较低，仅为41．6％～82．O％，果胶浓度高于1000nag·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）．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, 2 500 and 4 500 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 ）.

关 键 词：厌氧 果胶废水 降解速率 去除率 中间产物 

分 类 号：X792[环境科学与工程—环境工程]