CAJ | 학술논문

采用活性炭吸附的方法对锂电池产生的含酯废水进行预处理,研究了吸附时间、初始pH值和活性炭投加量对废水COD去除的影响.吸附饱和后的活性炭用微波进行再生,考察了辐照时间、微波功率及再生次数对活性炭再生效果的影响.结果表明,当活性炭投加量为10g/L时,吸附60min,含酯废水的COD去除率为69.5%,可生化性从原水的0.05提高到0.25.当微波功率为420W、辐照时间为6min时,活性炭可被有效地再生,再生效率高达98.0%,活性炭损失率约为5.2%.再生前后活性炭的红外光谱图表明,活性炭表面官能团发生了变化,促进活性炭对污染物质的吸附.
채용활성탄흡부적방법대리전지산생적함지폐수진행예처리,연구료흡부시간、초시pH치화활성탄투가량대폐수COD거제적영향.흡부포화후적활성탄용미파진행재생,고찰료복조시간、미파공솔급재생차수대활성탄재생효과적영향.결과표명,당활성탄투가량위10g/L시,흡부60min,함지폐수적COD거제솔위69.5%,가생화성종원수적0.05제고도0.25.당미파공솔위420W、복조시간위6min시,활성탄가피유효지재생,재생효솔고체98.0%,활성탄손실솔약위5.2%.재생전후활성탄적홍외광보도표명,활성탄표면관능단발생료변화,촉진활성탄대오염물질적흡부.
Lithium-ion batteries became an important direction for the clean energy development, but the ester-containing wastewater produced from the battery factory was not suitable for direct biological treatment,for its high levels of COD and low biodegradability.The treatment of ester-containing wastewater by activated carbon adsorption method was investigated in this study, especially the effects of adsorption time, pH conditions and activated carbon dosage on the COD removal rate. The saturated activated carbon was regeneratedby microwaveafter adsorption. The effects of irradiation time and microwave power on the activated carbon regeneration were also studied. Under the optimum conditions of activated carbon dosage was 10g/L, adsorption time of60min, the wastewater COD removal rate was 69.5%and biodegradability of raw water was improvedfrom 0.05 to 0.25. Moreover, under the conditions of the microwave power was 420 W and the irradiation time was 6min, the activated carbon could be effectively regenerated, the regeneration efficiency was 98.0%, and only about 5.2% was lost in the regeneration process.The infrared spectra of activated carbon before and after regeneration showed thatthe surface functional groups of the activated carbonhad changed,thus improved the adsorption of pollutants.