脱脂棉纤维梯级聚结工艺的除油性能  

Oil-removal efficiency of cascade coalescence process with absorbent cotton fibers

作　　者：马宁[1] 周健 王雪清[1] 张秀芳[2] 安蓉 MA Ning;ZHOU Jian;WANG Xueqing;ZHANG Xiufang;AN Rong(National&Local Joint Engineering Research Center for Environmental Pollution Control of Petroleum and Petrochemicals,Sinopec Dalian Research Institute of Petroleum and Petrochemicals,Dalian 116045,China;School of Light Industry&Chemical Engineering,Dalian Polytechnic University,Dalian 116034,China)

机构地区：[1]中国石化大连石油化工研究院石油化工环境污染防治技术国家地方联合工程研究中心,辽宁大连116045 [2]大连工业大学轻工与化工学院,辽宁大连116034

出　　处：《化工环保》2023年第5期620-626,共7页Environmental Protection of Chemical Industry

基　　金：中国石油化工集团公司资助项目(319021-5)。

摘　　要：采用高速剪切法配制了高乳化度的含油废水,研究了脱脂棉(COT)、聚四氟乙烯(PTFE)、涤纶(PET)和尼龙66(PA66)等纤维作为聚结材料的油水分离性能。分别以PTFE、PET和PA66纤维为第一级床层,COT纤维为第二级床层,考察了PTFE-COT、PET-COT和PA66-COT梯级聚结工艺的除油效果。实验结果表明:在进水含油量为1000 mg/L、表观流速为4.2 m/h的条件下,COT纤维的除油率大于99%,且出水中无分散油,显著优于其他3种纤维;在梯级聚结工艺中,PA66-COT体系梯级聚结除油效果最佳,第一级PA66纤维床层出水含油量平均值为93.4 mg/L,第二级COT纤维床层出水含油量低于10 mg/L。The oily wastewater with high emulsification degree was prepared by high-speed shear method and used for the study on oil-water separation performance of coalescence materials such as absorbent cotton(COT),polytetrafluoroethylene(PTFE),polyester(PET)and nylon 66(PA66)fibers.In addition,the cascade coalescence reactors were established with absorbent cotton fiber as the first bed and PTFE,PET,PA66 fibers as the second bed,named as PTFE-COT、PET-COT,PA66-COT,respectively.Examined the oil removal effect of PTFE-COT,PET-COT,and PA66-COT cascade coalescence processes were investigated.The experimental results show that:Under the conditions of influent oil concentration 1000 mg/L and apparent flow rate 4.2 m/h,the single COT fiber is obviously superior to other three kinds of fibers with more than 99%of removal rate and no dispersed oil in the effluent;In the coalescence process,the PA66-COT system has the best oil removal effect with 93.4 mg/L of the average oil content of the effluent from the first stage PA66 fiber bed and less than 10 mg/L of that from the second stage COT fiber bed.

关 键 词：油水分离 脱脂棉纤维 梯级聚结 纤维 废水 

分 类 号：X703[环境科学与工程—环境工程]