PFS絮凝-膜分离法处理含油食品废水的研究
Study on treatment of food oil-containing wastewater by PFS flocculation-membrane separation
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摘要: 采用PFS絮凝-膜分离法对含油食品废水进行处理。通过改变PFS的投加量、pH值、反应时间、膜操作温度和压力等条件,对废水中的油、COD、SS和NH3-N的去除率进行了研究,得到了较佳的工艺条件:PFS的投加量为70 mg/L,pH值为7,反应时间为60 min,膜操作温度为40 ℃,压力为0.7 MPa,油、COD、SS和NH3-N的去除率分别达到98%、93%、92%和80%以上,出水水质达到《污水综合排放标准》的一级标准。Abstract: In this paper, PFS flocculation-membrane separation is applied to treat food oil-containing wastewater. The removal rates of oil, COD, SS and NH3-N are studied by changing conditions of adding amount of PFS, pH value, reaction time, operation temperature and pressure of membrane, and the optimum technological conditions are obtained: the adding amount of PFS is 70 mg/L, pH value 7, reactor time 60 min, operation temperature 40 ℃ and pressure of membrane 0.7 MPa, The removal rates of oil, COD, SS and NH3-N reached 98%, 93%, 92% and above 80%,respectively. The effluent water could reach first class standards of 《National Integrated Wastewater Discharge Standards 》.
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Key words:
- oil-containing wastewater /
- PFS flocculation /
- membrane separation /
- wastewater treatment
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