甜菜碱对高盐废水的生物除磷影响初探  

Preliminary research on the influences of betaine on biological dephosphorization in high-salinity wastewater

作　　者：杨红薇[1] 陈亮[1,2] 黄川[1] 谢帆[1] 

机构地区：[1]西南交通大学地球科学与环境工程学院,四川成都610031 [2]重庆大学三峡库区生态环境教育部重点试验室,重庆400045

出　　处：《工业水处理》2017年第2期71-75,共5页Industrial Water Treatment

基　　金：中央高校基本科研业务费专项资金科技创新项目(A0920502051513-16);大学生科研训练计划项目(201610613018)

摘　　要：在高盐废水的生物处理中,由于高盐度胁迫作用,生物除磷效能普遍偏低。针对SBR系统生物除磷过程,通过监测出水总磷、磷酸盐、亚硝态氮的浓度,探究了甜菜碱的投加时期和投加量对高盐废水生物除磷的影响。研究结果表明:投加适量的甜菜碱能有效应对环境和盐度突变对系统除磷带来的负效应,增强SBR系统的鲁棒性;甜菜碱关键作用于好氧阶段,在曝气开始时投加甜菜碱更有利于生物除磷;在盐度突变的情况下,增加甜菜碱的投加量正反馈于磷酸盐去除率,但持续性不高。In the biological treatment of high-salinity wastewater,biological dephosphorization capacity is generallylow due to the high salinity stress. Aiming at the biological dephosphorization process of SBR system,by monitoringthe concentrations of total phosphorus,phosphate and nitrite in water,the influences of the dosing period anddosage of betaine on the biological dephosphorization of high-salinity wastewater are probed. Research results showthat adding a proper amount of betaine can effectively deal with the negative effects brought by environment andsalinity mutation on dephosphorization in the system,and enhance the robustness of SBR system. Betaine plays animportant role in biological aerobic stage,adding betaine at the beginning of aeration is more advantageous tobiological dephosphorization. In the case of salinity mutation,increasing the dosage of betaine can increase theremoving rate of phosphate as feedback,but the persistence is not long.

关 键 词：高盐废水 生物除磷 序批式活性污泥法 甜菜碱 

分 类 号：X703[环境科学与工程—环境工程]