Solvent extraction is accomplished by the addition of an immiscible solvent to the wastewater . 溶剂萃取是向废水中投加不溶于水的溶剂。
2.
A feed solution initially containing one or more solutes is thoroughly mixed with an immiscible solvent having a different density . the mixing provides a large interfacial area so that efficient mass transfer of the desired solute can occur between the two immiscible liquids 在此离心力场中，多相混合液因为其密度不同，所受的离心力亦不同，固而产生分层现象，从而达到萃取或分离的目的。
