摘要
研究了利用高梯度磁分离法处理含油废水的原理和工艺条件.结果表明,当废水含油量wo,in=(120~700)×10-6,wCOD,in=2.1×10-3时,利用高梯度磁分离法处理,可使油和COD的去除率均达到80%左右;高梯度磁分离法处理含油废水的推荐工艺参数如下:磁粉的加入量wm=250×10-6,搅拌时间10min以上,pH5~8.对于低浓度的除油过程,可在添加磁粉时加入絮凝剂,并根据絮凝剂的性质调节pH值,以使除油率有所上升.
The technological conditions and principle of treating oil-bearing wastewater by high gradient magnetic separation (HGMS) technology were studied. The experimental results show that oils and COD removal rates for HGMS treatment of the wastewater containing (120-700)×10-6 oils and 2.1×10-3 COD are both about 80%. The recommended conditions are: the dosage of magnetic particle is 250×10-6; the mixing time is 10 min or above; and the range of pH value is 5-8. To deal with the wastewater containing low oil quantity, coagulant can be added under proper pH value with the magnetic particle. Thus the oil removal efficiency is increased.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2003年第11期1791-1794,共4页
Journal of Shanghai Jiaotong University