CAJ | 학술논문

针对煤气化废水毒性大、难处理等问题，提出了一种热降解的处理方法．采用携带流反应实验系统，研究了温度、气氛、氧体积分数、停留时间等因素对废水中污染物热降解特性的影响．实验结果表明，温度对废水中COD和NH3-N的降解最为显著，在400～600,℃温度范围内，降解速率最大．COD和NH3-N在不同气氛下的降解率依次为：氧化性＞惰性＞还原性．随着氧体积分数的增大，降解率随之增加．除此以外，废水在炉内停留的时间越长，污染物的去除效果越明显．
침대매기화폐수독성대、난처리등문제，제출료일충열강해적처리방법．채용휴대류반응실험계통，연구료온도、기분、양체적분수、정류시간등인소대폐수중오염물열강해특성적영향．실험결과표명，온도대폐수중COD화NH3-N적강해최위현저，재400～600,℃온도범위내，강해속솔최대．COD화NH3-N재불동기분하적강해솔의차위：양화성＞타성＞환원성．수착양체적분수적증대，강해솔수지증가．제차이외，폐수재로내정류적시간월장，오염물적거제효과월명현．
Considering the problems of high toxicity and intractable thermal degradation of gasification wastewater,a novel approach was proposed based on pyrolysis and combustion. In an entrained flow reactor system,the effects of temperature,atmosphere,oxygen concentration and residence time on the thermal degradation characteristics of contaminants in wastewater were investigated. The analysis results show that temperature is the most sigificant factor in COD and NH3-N thermal degradation,and the maximum degrading rates is within the range of 400,℃ to 600,℃. COD and NH3-N thermal degradation rankings under different atmospheres are as follows:oxidative>inert>reductive. As the oxygen concentraiton increases,the thermal degradation effi-ciency is improved. The longer wastewater remains in the reactor,the better the effect of contaminants removal will be.