Chemical copper plating waste solution treatment method
A technology of electroless copper plating and treatment methods, applied in chemical instruments and methods, inorganic chemistry, water/sewage multi-stage treatment, etc., can solve the problems of difficult wastewater purification, high cost, and difficult resource recovery, etc., and achieve good environmental benefits And economic benefits, large environmental benefits and economic benefits, the effect of broad application prospects
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[0027] Take 4L of aging electroless copper plating waste liquid from an electroplating factory, and measure the COD in the waste liquid Cr The concentration is 10032mg / L, Cu 2+ content is 5g / L, sodium hypophosphite content is 2.89g / L, sodium phosphite content is 21.29g / L, and total phosphorus is 6.13g / L, waste liquid is filtered, and the granular suspension in the waste liquid is removed, and Put the waste liquid after the above-mentioned filtration into the reactor, adjust the pH value of the waste liquid to make the pH value of the waste liquid 6.0; adding concentration is 30% hydrogen peroxide (making H 2 o 2 The concentration is 10g / L), with cuprous sulfate and copper sulfate (Cu + :Cu 2+ =1:2) As a catalyst, add ultraviolet photocatalysis, stir by mechanical stirring, first turn on the 80W ultraviolet lamp to start the reaction, and carry out oxidative degradation. In actual use, we can also use other oxidation methods to degrade organic matter, such as one or more of...
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