Gas field water evaporation mother liquor resourceful treatment method and treatment device system

The invention relates to a gas field water evaporation mother liquor resourceful treatment method and a treatment device system.The gas field water evaporation mother liquor resourceful treatment method comprises the following steps that 1, the pH of gas field water mother liquor to be treated is adjusted to be 7-8, then a coagulant is added, stirring and standing settling separation are conducted, and first supernate and first sediment are obtained; wherein the coagulant is a mixture of a PAC coagulant and a PAM coagulant; step 2, adding CaCl2 into the first supernate obtained in the step 1 under a stirring condition, and carrying out precipitation reaction to obtain second supernate and a second precipitate; 3, under the stirring condition and under ultraviolet irradiation, hydrogen peroxide is added into the second supernate obtained in the step 2 for a reaction, third supernate is obtained, and resourceful treatment of the gas field water evaporation mother liquor is completed. The method is simple in pro