| abstract |
A method for treating water containing a nonionic surfactant, comprising: an adsorption step of using water containing a nonionic surfactant as feed water, allowing it to pass through a microfiltration membrane or an ultrafiltration membrane, as a Treating the water to obtain permeated water with a reduced concentration of nonionic surfactants; a desorption step, in which at least one of an alkali agent, an anionic surfactant and an oxidizing agent is brought into contact with the precision filtration membrane or ultrafiltration membrane to make adsorption Desorption of the nonionic surfactant on the filter membrane. A water treatment method in which the treated water is treated with an osmotic membrane. |