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.
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.
出处
《环境科学学报》
CAS
CSCD
北大核心
2014年第4期888-893,共6页
Acta Scientiae Circumstantiae
基金
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)~~
关键词
生物降解
生物脱氮除磷
四溴双酚A
硝化
反硝化
biotransformation
biological nitrogen and phosphorus removal
tetrabromobisphenol A
nitrification
denitrification
