摘要
以焦化废水中多环芳烃(PAHs)为研究对象,活性炭、钢渣和碳化硅为吸波介质,采用超声波萃取、高效液相色谱法检测技术,定性定量分析焦化废水中PAHs,分析了微波温度、加热时间、不同种类和质量的活性炭、钢渣、碳化硅对PAHs去除效率的影响。试验结果表明微波温度和加热时间对PAHs影响较大,微波温度在60~90℃,加热时间在9~12 min时,PAHs的去除效果最好,平均脱除率在55%以上。同时对吸波介质在微波辐射下对PAHs的去除机理进行了分析,发现活性炭和碳化硅的处理效果比钢渣要好,三者的平均脱除率在30%以上,选择适宜质量的吸波介质可以获得较高的去除率。
With polycyclic aromatic hydrocarbons(PAHs) in coking wastewater as research object,activated carbon,steel slag and silicon carbide as absorbing media,PAHs in the coking wastewater was qualitatively and quantificationally analyzed by ultrasonic extraction and high performance liquid chromatography.The influences of microwave temperature,heating time,various types and masses of activated carbon,steel slag and silicon carbide on removal efficiency of PAHs were studied.The experimental results show that the microwave temperature and heating time have a great effect on PAHs removal.The most efficient removal of PAHs with more than 55% of the average removal rate can be obtained at 60 ~ 90 ℃ of microwave temperature and 9 ~ 12 min of heating time.Meanwhile,the removal mechanisms of PAHs by absorbing media under microwave radiation were discussed,finding that the activated carbon and silicon carbide have better removal efficiency of PAHs than steel slag and the average removal rate of PAHs for all the absorbing media(activated carbon,silicon carbide and steel slag) is over 30%.Adaptive mass of the absorbing media is beneficial for PAHs removal.
出处
《钢铁钒钛》
CAS
北大核心
2018年第3期75-79,共5页
Iron Steel Vanadium Titanium
基金
国家自然科学基金项目(51274084)
河北省自然科学基金—钢铁联合基金(E2014209152)
关键词
焦化废水
PAHS
脱除率
微波
活性炭
碳化硅
钢渣
coking wastewater
PAHs
removal rate
microwave
activated carbon
silicon carbide
steel slag
