摘要
从COD、没食子酸、3,4,5-三甲氧基苯甲酸的去除效果以及COD负荷方面,对比分析了生物接触氧化与移动床生物反应器对五倍子加工废水的处理能力,并观察了实验过程中的pH以及载体上生物量和微生物形态变化,为生物处理好氧阶段的工艺筛选提供理论依据。实验结果表明,移动床生物反应器的COD、没食子酸、3,4,5-三甲氧基苯甲酸的平均去除率分别为65.11%、29.34%和50.47%,均低于生物接触氧化的73.14%、35.49%和55.00%。COD负荷分别为2.37、2.41和4.27 kg/(m^3·d)时,生物接触氧化的平均COD负荷同比均大于移动床生物反应器。生物接触氧化对COD、没食子酸、3,4,5-三甲氧基苯甲酸的去除效果和生物膜稳定性均优于移动床生物反应器,更适于处理五倍子加工废水。
The capacity of bio-contact oxidation and moving bed bioreactor for the treatment of gaUnut processing wastewater was comparatively analyzed. The removal efficiencies of COD, gallic acid, 3,4,5-trimethoxybenzoic acid and COD loading rate were studied during the operation of bio-contact oxidation and moving bed bioreactor. Simultaneously, changesofthepHvalue, the biomass on the filler and microorganism construction were observed. This provided theoretical foundation for the choice of aerobic biological treatment process. The results showed that the average removal efficiencies of COD, gallic acid and 3,4,5-trimethoxybenzoic acid by the moving bed biofilm reactor were 65.11%, 29.34% and 50.47%, respectively, which were all below that by bio-contact oxidation reactor of 73.14%, 35.49% and 55.00%, respectively. The average COD load of the bio-contact oxidation reactor was higher than the moving bed bioreactor under different influent loading rates of 23 7, 2.41 and 427 kg/（m3- d）, respectively. The performance of bio-contract oxidation reactor was better than the moving bed bioreactor on the removal of COD, gallic acid, and 3,4,5-trimethoxybenzoic acid, and moreover, biofilm was more stable, which indicated that bio-contract oxidation was more appropriate than moving bed bioreactor for the treatment of gallnut processing wastewater.
出处
《水处理技术》
CAS
CSCD
北大核心
2015年第12期98-101,105,共5页
Technology of Water Treatment
基金
湖南省战略性新兴产业科技攻关类项目(2014GK1059)
