The invention relates to the technical field of
sewage treatment and in particular relates to a method for treating
wastewater containing high-concentration organic matters and
inorganic salts. The method comprises the following steps: feeding the
wastewater into a filter and a
reverse osmosis membrane device for treatment, thus obtaining
produced water and concentrated water; feeding the concentrated water into a
struvite reactor and then adding a proper quantity of
magnesium salt, MgO and phosphates to the
struvite reactor, thus obtaining an agricultural
fertilizer and medium concentrated water; feeding the medium concentrated water into a
graphene adsorption
tower for adsorption
filtration, thereby removing organic matters such as oil
contamination; feeding the medium concentrated water with oil
contamination removed into an
evaporator to obtain a crystalline slid
powder and mixed gases; feeding the mixed gases into a gas membrane separator for separation, thus obtaining pure water and thickened mixed gases; feeding the thickened mixed gases into a condenser for condensation treatment, thus obtaining water and non-condensable gases; feeding the non-condensable gases into a
microwave ultraviolet catalytic reactor for
decomposition, thus obtaining CO2 and H2O. The method is capable of effectively treating the
wastewater containing high-concentration organic matters and
inorganic salts, and further is simple in process, hardly causes environmental
pollution and is capable of changing waste into things of value.