Combined treatment method of electroplating mixed wastewater
一种混合废水、综合处理的技术,应用在冶金废水处理、多阶段水处理、水/污水处理等方向,能够解决废水成分复杂、处理结果达标、困难等问题,达到好市场应用前景、处理成本低、降低COD的效果
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Embodiment 1
[0070] Embodiment 1: process the electroplating mixed wastewater containing cyanide
[0071] Electroplating mixed wastewater includes: cyanide copper plating wastewater, cyanide copper-zinc alloy electroplating wastewater, gun black tin-nickel alloy electroplating wastewater, pyrophosphate copper plating wastewater, alkaline zinc-nickel alloy electroplating wastewater, trivalent chromium chrome plating wastewater, trivalent Chromium passivation wastewater, hexavalent chromium passivation wastewater, copper plating, bright nickel plating, potassium chloride zinc plating, cyanide-free alkaline zinc plating, hexavalent chromium plating and other electroplating wastewater, pre-treatment degreasing wastewater, and pickling waste water. Excluding electroless nickel plating wastewater and electroless copper plating wastewater.
[0072] Step one, breaking cyanide
[0073] Transfer the electroplating mixed wastewater from the electroplating wastewater regulating tank to the primary o...
Embodiment 2
[0088] Embodiment 2: process the electroplating mixed wastewater containing electroless plating wastewater
[0089] Electroplating mixed wastewater includes: cyanide copper plating wastewater, cyanide copper-zinc alloy electroplating wastewater, gun black tin-nickel alloy electroplating wastewater, pyrophosphate copper plating wastewater, alkaline zinc-nickel alloy electroplating wastewater, trivalent chromium chrome plating wastewater, trivalent Chromium passivation wastewater, hexavalent chromium passivation wastewater, acid copper plating, bright nickel plating, potassium chloride zinc plating, cyanide-free alkaline zinc plating, hexavalent chromium plating and other electroplating wastewater, electroless nickel plating wastewater, electroless copper plating wastewater , pre-treatment degreasing wastewater, and pickling wastewater.
[0090] Step 1, oxidizing cyanide, and electroless plating complexing agent and reducing agent
[0091] Transfer the electroplating mixed wast...
Embodiment 3
[0105] Embodiment 3: Treatment does not contain the electroplating mixed wastewater of cyanide and electroless plating wastewater
[0106] Electroplating wastewater includes: pyrophosphate copper plating wastewater, electroplating alkaline zinc-nickel alloy wastewater, trivalent chromium plating wastewater, trivalent chromium passivation wastewater, hexavalent chromium passivation wastewater, acid copper plating, bright nickel plating, chloride Potassium galvanizing, cyanide-free alkaline galvanizing, hexavalent chromium plating and other electroplating wastewater, pre-treatment degreasing wastewater, and pickling wastewater.
[0107] Step 1. Oxidation of organic matter such as electroplating additives
[0108] Transfer the electroplating mixed wastewater from the electroplating wastewater regulating tank to the primary oxidation tank, stir the pool liquid with a mixer, add lime emulsion to adjust the pH of the wastewater to 10.5-12, and add an oxidant to oxidize for 60 minute...
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