研究论文
刘文杰,管运涛,蹇兴超,冯庆革,吴光学.四溴双酚A在污水脱氮除磷过程中迁移转化试验研究[J].环境科学学报,2014,34(4):888-893
四溴双酚A在污水脱氮除磷过程中迁移转化试验研究
- Transformation of tetrabromobisphenol A in biological nitrogen and phosphorus removal processes
- 基金项目:深圳市科技研发资金条件与平台建设计划——重点实验室项目(提升发展)(No.XCL201110065)
- 管运涛
- 清华大学深圳研究生院清洁生产重点实验室, 深圳 518055
- 吴光学
- 清华大学深圳研究生院清洁生产重点实验室, 深圳 518055
- 摘要:四溴双酚A(TBBPA)是一种使用广泛的阻燃剂,其扩散到环境介质中,会对生态和人体健康构成威胁,以往研究较少关注TBBPA在脱氮除磷工艺中的迁移转化.采用实验室SBR脱氮除磷反应器,研究了TBBPA在工艺长期运行过程中的去除、在典型周期过程中的变化、在硝化和反硝化过程中的去除.TBBPA在工艺长期运行过程中的去除率为48.4%,其中生物去除率为44.4%,吸附去除率为4.0%.在典型周期中TBBPA浓度受pH影响很大.TBBPA在硝化过程的去除主要是生物作用,而在反硝化过程的去除主要是吸附作用.
- Abstract:Tetrabromobisphenol A (TBBPA) is a flame retardant, and threats the ecology and human's health after releasing into the environment. Few studies have been focused on the transformation of tetrabromobisphenol A in biological nitrogen and phosphorus removal processes. By using sequencing batch reactors (SBRs) where biological nitrogen and phosphorus removal was achieved, TBBPA transformation was examined in long-term operation, typical SBR operation cycles, and nitrification and denitrification processes. The long-term experiment showed that the removal percentage of TBBPA was 48.4%, with the biological process contributing to 44.4% and adsorption contributing to 4.0%. Concentration of TBBPA in a typical cycle was highly affected by pH. Removal of TBBPA during nitrification was mainly due to the biological process, while removal of TBBPA during denitrification was mainly due to adsorption.
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