除油材料的制备及其对煤化工废水中油类物质的强化去除效果

Preparation of Degreasing Material and its Enhanced Removal Effect on Oily Substances in Coal Chemical Wastewater

以羊毛毡为载体材料,采用纳米TiO_(2)/硅烷偶联剂复合对羊毛毡进行改性,强化羊毛毡的除油性能,以期制备出能够用于煤化工废水的高效除油材料。结果发现,采用粒径为100 nm的TiO_(2)与硅烷偶联剂kh-550复合对羊毛毡进行改性,在TiO_(2)与硅烷偶联剂质量分数分别为0.8%时,改性羊毛毡的疏水性能最好,水和油的接触角分别为152°和0°,对煤化工废水中总油去除率可达59.92%;和未改性羊毛毡相比,除油效率提高了41.07%;进一步研究发现,改性后的羊毛毡主要是强化了对总油中悬浮油和分散油的去除,去除率分别为94.88%和87.15%。改性后的羊毛毡可用于煤化工废水中油类物质去除生产实际,具有很好的应用前景。

I n this paper,wool felt was used as the carrier material,and nano-TiO_(2)/silane coupling agent was used to modify the wool felt to strengthen the oil removal performance of the wool felt,and to prepare an efficient oil removal material that could be used in the coal chemical wastewater.The wool felt was modified by the composite of TiO_(2) with a particle size of 100 nm and the silane coupling agent kh-550.When the mass fraction of TiO_(2) and the silane coupling agent were 0.8%,the hydrophobic performance of the modified wool felt was the best.The contact angles of water and oil were 152°and 0°,respectively and the removal rate of total oil in coal chemical wastewater could reach 59.92%.Compared with unmodified wool felt,the oil removal efficiency increased by 41.07%.After further research,it was found that the modified wool felt mainly enhanced the removal of suspended oil and dispersed oil in the total oil,and the removal rates were 94.88%and 87.15%respectively.The modified wool felt can be used in the production practice of removing oily substances in the coal chemical wastewater and has a good application prospect.