Best Treatment Plan for Cyanide Cadmium Plating Wastewater

We currently are rearranging our shop to accommodate expansion. I need information on the best way to treat the wastewater for a cyanide cadmium plating line. Also, for secondary containment we use a brick containment wall coated in a chemical resistant paint. Is there another method, I would like to use something more mobile. Thank you,

The most common process for cyanide destruction is alkaline chlorination. If you have never done cyanide destruction before, you will need to have some equipment upgrades. ORP and pH controls are key to this process. Isolate the cyanide stream first. Alkaline chlorination is a 2 step process. First raise the pH to above 10.5, introduce sodium hypochlorite to see a positive 550 or higher OPR, and maintain this with additions of sodium hydroxide and sodium hypochlorite for 30minutes to 1 hour. This step produces cyanogen chloride which then converts to cyanate. Second, lower the pH to 8.5-9. At this pH the cyanate is hydrolyzed to carbon dioxide and ammonia fairly quickly. If you try to maintain the higher pH from the first stage you may see this step take several hours to complete. From there the solids that are formed should be removed and a cyanide test ran to determine how effective the destruction process was. If it is within the limits you can then send that water to the main wastewater treatment system. Your main wastewater treatment system should be able to remove the cadmium if the correct pH is meet, the correct coagulant is used, and if needed the correct metal precipitant is used.