CAJ | 학술논문

采用O_3-H_2O_2高级氧化结合催化O_3氧化技术对晚期垃圾渗滤液进行预处理,考察了颗粒活性炭负载二氧化钛(TiO_2/GAC)催化剂的催化效果,并研究了反应体系中O_3和H_2O_2投加量以及pH等因素对COD去除效果的影响.结果表明,当O_3投加量为1.8 g·L~(-1),H_2O_2投加量为0.27 g·L~(-1),催化剂投加质量分数为15%时,反应90min的COD去除率达到40%;对出水调节pH≥11.4,经过沉淀后,COD去除率提高到58%.出水澄清透明,BOD5/COD从＜0.1提高到0.26.水质得到较大改善,可生化性明显提高,为后续的生化处理工艺起到较好的预处理作用.
채용O_3-H_2O_2고급양화결합최화O_3양화기술대만기랄급삼려액진행예처리,고찰료과립활성탄부재이양화태(TiO_2/GAC)최화제적최화효과,병연구료반응체계중O_3화H_2O_2투가량이급pH등인소대COD거제효과적영향.결과표명,당O_3투가량위1.8 g·L~(-1),H_2O_2투가량위0.27 g·L~(-1),최화제투가질량분수위15%시,반응90min적COD거제솔체도40%;대출수조절pH≥11.4,경과침정후,COD거제솔제고도58%.출수징청투명,BOD5/COD종＜0.1제고도0.26.수질득도교대개선,가생화성명현제고,위후속적생화처리공예기도교호적예처리작용.
O_3-H_2O_2:advanced oxidation process combined with catalytic ozonation technology was applied as pretreatment in treating advanced stage landfill leachate. Effects of TiO_2-mounted particle active carbon(TiO_2/GAC)using in catalytic ozonation were investigated, meanwhile, the effective factors, such as the amount of O_3, H_2O_2, and their proportion of dosage were studied. The results showed that when adding O_3 1.8 g·L~(-1), H_2O_2 0.27 g·L~(-1) and 15% catalyst, after 60 mill reaction, the COD removal rate could reach 40%. Then, adjusted effluent pH value to 11.4, after precipitation, COD removal ram raised to 58%, the supernatant fluid was clarify and transparent, BOD_5/COD、Ⅳas increased from less 0. 1 to 0.26.water quality Was improved a lot, biodegradability was obviously increased, which had made a good preliminary treatment work for the following biochemical treatment.