活性炭吸附处理含乳化油矿井水试验研究

EXPERIMENTAL STUDY ON TREATMENT OF COAL MINE DRAINAGE WATER WITH EMULSIFIED OIL ADSOBED BY ACTIVATED CARBON

为考察活性炭吸附对乳化油的去除效果,分别采用煤质、木质和椰壳粉状活性炭进行对比试验研究。结果表明:矿井水原水油含量0.66 mg/L,采用煤质、木质及椰壳活性炭投加量60 mg/L、吸附30 min后,去除率分别为81.71%、63.13%和50.78%,煤质活性炭吸附效果优于木质和椰壳活性炭;试验得出的煤质活性炭弗伦德利希(Fruendlich)吸附等温式,吸附时间60 min,活性炭投加量46 mg/L时,出水含油量小于0.1 mg/L;活性炭投加量60 mg/L时,出水含油量小于0.05 mg/L,为实际工程应用提供设计工艺参数。

In order to investigate the removal effects of emulsified oil existed in coal mine drainage water, the contrast tests were conducted by coal-based activated carbon, wood-based activated carbon and coconut shell-based activated carbon. The results shows that： Under the conditions of the influent oil concentration of 0.66 mg/L, the dosage of 60 mg/L of coal-based activated carbon, wood-based activated carbon and coconut shell-based activated carbon, and the adsorption time of 30 min, the removal rates are 81.71 % 、63.13 % and 0.78 %,respectively. The adsorption effect of coal-based activated carbon is better than wood-based activated carbon or coconut sell-based activated carbon. From the Fruendlich adsorption isotherm formula of coal-based activated carbon by the adsorption time of 60 min, the oil concentration effluent would be less than 0.1 mg/L with the coal-based activated carbon dosage of 46mg/L, and the oil concentration effluent would be less than 0.05 mg/L with the coal-based activated carbon dosage of 60 mg/L. The experimental results could be as technological parameters for practical engineering.