Method for treating electroless nickel-plating wastewater through combination of hydrogen-peroxide oxidation and ion exchange adsorption

The invention provides a method for treating electroless nickel-plating wastewater through the combination of hydrogen-peroxide oxidation and ion exchange adsorption in order to solve the problem that nickel ions are difficult to stably and standardly discharge in the existing electroless nickel-plating wastewater treatment. The method includes the following steps that 1, the hydrogen-peroxide oxidation method is used for decomposing a complex compound, wherein sulfuric acid or sodium hydroxide is poured in electroless nickel-plating wastewater firstly, the pH value is adjusted to 2.0-3.0, a proper amount of hydrogen peroxide is poured to decompose a complexing agent in the wastewater and nickel ions are thus separated from the complexing agent to be in an ionic state; 2, the ion exchange adsorption method is used for treating nickel ions, wherein after being subjected to oxidation and complex compound decomposing, the electroless nickel-plating wastewater passes through a multi-medium filter, impurities in t