After OMW physical separation, the water was extracted using a siphon method and then passed through six different designed treatment methods, with each treatment consisting of 3e4 suc- cessive columns containing different natural materials (Table 1).
After OMW physical separation, the water was extracted using a siphon method and then passed through six different designed treatment methods, with each treatment consisting of 3e4 suc- cessive columns containing different natural materials (Table 1).