粉煤灰吸附法处理含油废水的研究  

Study on Oil-Containing Wastewater Treatment by Using Modified Fly Ash

作　　者：秦兰兰[1] 王有乐[1] 王文斌[2] 王永平[3] 付腾飞[3] 

机构地区：[1]兰州大学资源环境学院,兰州730000 [2]兰州大学草地农业科技学院,兰州730000 [3]延安大学能源与环境工程学院,陕西延安716000

出　　处：《湖北农业科学》2015年第10期2367-2371,共5页Hubei Agricultural Sciences

摘　　要：采用化学方法对粉煤灰进行改性,并运用单因素试验探讨了改性剂浓度、改性时间和灰酸比（m∶V,g/m L下同）等因素对除油效率的影响。通过正交试验确定了粉煤灰的最佳改性条件为：室温,改性剂为0.3 mol/L盐酸溶液,搅拌速度300 r/min,搅拌时间15 min,灰酸比l∶2;确定了改性粉煤灰吸附处理含油废水的工艺条件为：室温,p H〈3,投加量100 g/L,搅拌速度300-350 r/min,搅拌时间2 h,静置12 h。在该工艺条件下,采油废水经粉煤灰吸附处理后,出水含油量由147 mg/L下降至2.3 mg/L,除油率为98.44%。Fly ash was modified by using chemical methods. The conditions for modification of fly ash were optimized, then the modified fly ash was used to treat oil-wastewater and the treatment conditions were also optimized. The result demonstrat- ed best modified conditions of fly clay were the room temperature,0.3 mol/L hydrochloric acid solution, modifying time 15 min and proportion of ash to acid 1：2. The removed rate of oil was as high as 98.44% and oil concentration was 2.3 mg/L which met the first grade national discharges standard for oil-containing wastewater, when the adsorption temperature was at room temperature, pH value was below 3, the dosage of modified fly ash was 100 g/L and the contacting time was 2 h.

关 键 词：酸改性 粉煤灰 吸附 采油废水 去除率 

分 类 号：X703[环境科学与工程—环境工程]