Color coating production, mainly from the production of waste water pipeline section and coil Coil surface preparation. Its governance flow chart: chromium-containing wastewater (including wash water) → reduction treatment serum neutralization treatment → → → sedimentation skimmed wastewater discharge (including wash water) → → buried waste water separator 42, color coated production process containing Cr6 + wastewater treatment program? Wastewater containing Cr6 +, while its reduction treatment, reducing the amount of which is calculated Cr6 + content (g / m3) = Cr6 + titration points × 0.1733g / m3 reducing the amount (kg) = Cr6 + content × × bath volume ratio coefficient which is the ratio coefficient: 3.7 sulfite; sodium bisulfite 3; ferrous sulfate 8.8 Incorporation: derived by calculating the amount of reducing agent Boxing color coated paper, add some more appropriate. 43, color coated production skim wastewater treatment options? Skimmed wastewater must be oil-water separation, and its methods are: ① acidification method: using hydrochloric acid or sulfuric acid as a separating agent, the pH was adjusted to 2.0 purification color painted steel plate means is a steel plate with organic coating. Coating color plate is cold rolled steel, galvanized steel, surface chemical treatment after coating (roll coating) or an organic compound thin film (PVC film), and then cured by baking product made. Color steel sheet as a far-reaching effects on the construction industry, with advances in technology, environmental awareness color coated paper, improving the people's living standards, more and more color plates showing strong vitality and broad market prospects Hong prepainted volume, by construction, household appliances, electronics, transportation, interior decoration, office equipment and other industries of all ages. It is simple and convenient, accelerated the construction picked up speed, improve the efficiency of the project. But if there is definitely leaking steel screws and color phase occurs at a plastic or caused by the opening line. Boxing color coated paper | Jinhong Run Steel (certified) | Yangzhou color coated paper provided by Boxing Xingfu Town 金宏润 Steel Industry and Trade Ministry. Boxing Xingfu Town 金宏润 Steel Industry and Trade Ministry (www.bxjhr.com) (www.bxjhr.com) is a leader in Binzhou, board (with) wood, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Jinhong Run Steel leadership with the staff warmly welcome all inquiries negotiations to create a better future for the steel Jinhong Run.