研究论文
郭书海,张海荣,曲久辉,刘会娟.稠油乳化段废水厌氧处理过程中COD与BOD5的协同变化及可生化性研究[J].环境科学学报,2002,22(1):29-33
稠油乳化段废水厌氧处理过程中COD与BOD5的协同变化及可生化性研究
- Study on the behavior of COD vs BOD5 and biodegradability in treatment of anaerobic process for emulsified viscous oil production wastewater
- 基金项目：中国科学院知识创新工程项目(KZCX2409)
- 作者
- 单位
- 郭书海
- 中国科学院生态环境研究中心环境水化学国家重点实验室,北京 100085
- 张海荣
- 中国科学院沈阳应用生态研究所,沈阳 110016
- 曲久辉
- 中国科学院生态环境研究中心环境水化学国家重点实验室,北京 100085
- 刘会娟
- 中国科学院生态环境研究中心环境水化学国家重点实验室,北京 100085
- 摘要：稠油乳化段废水中的主要污染物为有机聚合物和石油类污染物,BOD5COD值极低,可生化性差.通过厌氧处理可使污染物发生水解反应,BOD5COD值由0.08升为0.15(2.88h).与其它难降解有机废水的厌氧处理结果不同,在BOD5增加的同时,COD亦大幅度增加.而在全部厌氧反应过程中,TOC一直呈下降趋势,表明水样中的污染物在生物作用下不断得到削减;在COD达到最高时,石油类污染物中胶质的浓度大幅度降低,烷烃的浓度升高,说明以胶质为代表的大分子污染物因水解反应,由K2Cr2O7不能氧化状态变为可氧化状态,导致COD测量值显著升高.
- Abstract：The main pollutants of viscous oil production wastewater in emulsification stage were organic polymer and petroleum. The COD was higher whereas BOD5 lower. The value of BOD5/COD was only 0 08. Through anaerobic pretreatment, the ratio of BOD5 and COD increased to 0.15 (288h). The abnormal result was that with the increase of BOD5, the concentration of COD (144h) reachedup to 534mg/L from324mg/L. TOC decreased gradually in the whole process, with meamt that polymer and petroleum, especially resin, degraded to small molecule and could be oxidized by K2Cr2O7 after anaerobic process. The results in this paper have been applied to the design of a produced water treatment plant.
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