吸附-磁性分离法处理含油污水的研究

本文提出了吸附-磁性分离法处理含油污水的新工艺。研究了粘土作为吸附剂在此工艺中对矿物油、COD、浊度和色度的去除效果;比较了膨润土、活性炭、煤泥、高岭土等的处理效果。对处理水中悬浮物的沉降性能以及粘土吸附剂的再生等作了初步探讨。在推荐的流程下,可使出水中矿物油<2ppm、COD<100ppm SS<1ppm。

ADSORPTION-MAGNETIC SEPARATION PROCESS FOR OILY WASTEWATER TREATMENT

An adsorption-magnetic separation process for oily wastewater treatment was developed. The removal of mineral oil, COD, turbidity, SS and colour by soil, and the removal of mineral oil and COD by bentonite, activated carbon, coal dust and kaolin as adsorbents were studied. The settling characteristics of SS in the effluent from the process and the reuseability of the soil adsorbent were also investigated. When both mineral oil and COD concentrations in the influent were less than 300mg/L, an effluent with mineral oil less than 2mg/L, COD less than 100mg/L and SS less than lmg/L could be obtained. After treatment under 400°C for 30 minutes, the used soil adsorbent could be regenerated and used again.