摘要
以含油污泥和核桃壳为原料制备污泥吸附剂,并将其应用于含油污水中石油类的处理和工业油品的吸附。结果表明:制备的污泥吸附剂碳元素质量分数为87.68%,表面质地松散,分布着大量发达的孔隙,孔隙结构以过渡孔为主;相同条件下,污泥吸附剂对含油污水中石油类处理效果明显优于活性炭,热处理再生后的污泥吸附剂对含油污水中石油类的处理能力相比于新剂略有下降,但仍优于同时再生的活性炭;污泥吸附剂应用于工业油品的初始瞬时吸附速率高于活性炭,热处理再生后的污泥吸附剂初始瞬时吸附速率相比于新剂有所提高,随着再生次数的增加,初始瞬时吸附速率不断提高;热处理再生后的污泥吸附剂对工业油品的饱和吸附量始终高于同时再生的活性炭,且其达到饱和吸附的时间更快,多次再生后仍能保持较稳定的工业油品吸附量。
Sludge adsorbent was prepared from oily sludge and walnut shell and applied in the treatment of oily sewage and the adsorption of industrial oils.The results showed that the carbon content of sludge adsorbent was 87.69%with a loose surface texture and well-developed pores.The pore structure mainly consisted of mesopore.Under the same conditions,the treatment effect of sludge adsorbent on oil in oily wastewater was better than that of activated carbon significantly,the treatment effect of sludge adsorbent after regeneration by heat treatment on oily wastewater was slightly lower than that of new agent,but it was still superior to activated carbon that was also heat regenerated.The initial instantaneous adsorption rate of sludge adsorbent applied to industrial oils was higher than that of activated carbon.The initial instantaneous adsorption rate of sludge adsorbent after heat regeneration was improved,better than that of new agent.With the increase of regeneration times,the initial instantaneous adsorption rate increased continuously;the saturated adsorption capacity of sludge adsorbent regenerated by heat treatment for industrial oils was always higher than that of activated carbon regenerated,and the time for reaching saturated adsorption was faster,and the sludge adsorbent can maintain a stable adsorption capacity for industrial oils after repeated regeneration.
作者
汤超
关娇娇
谢水祥
Tang Chao;Guan Jiaojiao;Xie Shuixiang(Chongqing Water Resources and Electric Engineering College,Chongqing 402160;State Key Laboratory of Petroleum and Pollution Control;CNPC Research Institute of Safety and Environmental Technology)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2020年第11期71-75,共5页
Petroleum Processing and Petrochemicals
基金
国家重点实验室开放基金项目(PPC2018004)
重庆市教委科学技术研究项目(KJQN201803805)
重庆水利电力职业技术学院人才引进基金项目(KRC201802)。
关键词
污泥吸附剂
含油污泥
含油污水
工业油品
sludge adsorbent
oily sludge
oily wastewater
industrial oils