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研究了一种高比表面积化学纤维填料对泄漏于工业循环冷却水中机油的循环吸附效果。讨论了填料静态饱和吸附量和循环饱和吸附量的差别;考察了水中分散(或乳化)油的初始浓度、运行温度及pH值变化的条件下填料对循环吸附量和循环吸附能力的影响;比较了吸附前后填料的表面水接触角变化。实验结果表明,填料的循环饱和吸附量约是静态饱和吸附量的78%~87%,预示着它能够在线净化含机油循环冷却水;不同的初始油浓度下,填料均在10 min左右达到吸油平衡,初始油浓度≤1 g/L时,吸附60 min后水中的TOC降至17.6 mg/L;在工业循环水的运行范围内,温度与pH值的变化对填料的吸油能力影响不大,60 min后均能使含油水的TOC降至18 mg/L;吸附前后填料的表面水接触角基本不变,揭示了重复使用的可能性。
The effect of cyclic adsorption of a high specific surface area chemical fiber filler on engine oil leaking into industrial circulating cooling water was studied. The difference of static adsorption capacity and cyclic adsorption capacity was discussed. The influence of filler on cyclic adsorption capacity and cyclic adsorption capacity was investigated under the conditions of initial concentration, operating temperature and pH of dispersed (or emulsified) oil in water. The surface water contact angle changes of the filler before and after adsorption. The experimental results show that the cyclic saturated adsorption capacity of the packing is about 78% ~ 87% of that of the static saturated adsorption, which indicates that it can purify the oil circulating cooling water online. At different initial oil concentrations, the packing reaches the oil absorption about 10 min When the initial oil concentration is less than or equal to 1 g / L, the TOC in water decreases to 17.6 mg / L after 60 min of adsorption. In the operating range of industrial circulating water, the change of temperature and pH has little effect on the oil absorption capacity of the packing, After 60 min, the TOC of oil-containing water can be reduced to 18 mg / L. The surface water contact angle of the filler before and after adsorption is basically unchanged, which reveals the possibility of repeated use.