摘要
通过硫自养反硝化反应器连续流实验与批次实验相结合的研究方式,考察了硫自养反硝化工艺对含布洛芬的(低浓度100μg·L^(-1)和高浓度1 000μg·L^(-1))废水的处理效果,并初步研究了硫自养反硝化活性污泥对其去除机理。结果表明,硫自养反硝化活性污泥对布洛芬有较好的去除效果,反应器中布洛芬的平均去除率>95%,且实验组(含布洛芬)的反硝化脱氮效果要优于空白组(不含布洛芬),布洛芬的存在可以提高系统的反硝化脱氮效率。批次实验中,在短时间内(<6 d),不同浓度布洛芬的去除率均达到100%;而其中吸附去除率<30%。研究表明,在硫自养反硝化工艺中,布洛芬通过生物降解作用和吸附作用去除,且生物降解起主要作用。
Sulfide-based autotrophic denitrification reactor and batch tests were conducted to investigate the treatment efficiency of wastewater containing ibuprofen （low-concentration 100 μg · L -1 and high-concentration 1 000 μg · L-1 ） , and a possible mechanism for removal of ibuprofen. The experimental results show that, ibu- profen is removed efficiently by sulfide-based autotrophic denitrification activated sludge. In the reactor systems, the average removal efficiency of ibuprofen was greater than 95%. The denitrification efficiency of trial groups （ with ibuprofen） was better than the control group （without ibuprofen）, which indicates that the addition of ibu- profen could enhance the denitrification efficiency of reactor systems. In the batch tests, the removal efficiency of ibuprofen reached 100% in a certain time （ 〈 6 d） , while the removal efficiency of adsorption was less than 30%. The study shows that the main routes for degradation of ibuprofen are biodegradation and absorption, and that biodegradation plays a major role during treatment.
出处
《环境工程学报》
CAS
CSCD
北大核心
2017年第6期3461-3467,共7页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(51308558)
广东省自然科学基金资助项目(2015A030313149)
广东省环境污染控制与修复技术重点实验室开放基金资助项目(2016K0002)
关键词
硫自养反硝化
新型有机微污染物
布洛芬
生物降解
sulfide-driven autotrophic denitrification
emerging organic micro-pollutants
ibuprofen
biodegrada-tion
