Zinc Phosphate Pretreatment Coatings and Wastewater
The customer has two facilities; each has a zinc phosphate immersion line for pretreating fasteners with unique corrosion resistance requirements. In addition corrosion resistance, the zinc phosphate crystals provide a surface structure that allows specialty coatings to adhere during the Dip and Spin paint process.
The customer was struggling to produce zinc phosphate coating weights meeting their customers’ requirements. In addition, the zinc tanks generated excessive sludge, consumed unnecessary chemistry and required frequent dump/ recharge. The customer was also having difficulty treating their wastewater and had excessive zinc in their discharge water that was not meeting daily limitations. Their current chemical supplier did not have the technical expertise to solve their problems.
The DuBois Solution
DuBois partnered with the customer to improve quality and restore environmental compliance. Our local technical team and application specialists audited one of their facility’s zinc line and continuous wastewater treatment system. DuBois team identified several chemical, equipment and process improvement opportunities that they agreed to pursue. We then coordinated the zinc pretreatment line start-up with a sampling program that allowed us to evaluate coating weights and optimize wastewater treatment effectiveness. The results met customer quality expectations and environmental compliance. After proving our capabilities in Iowa, the customer converted to the DuBois program at their second location.
Results and Benefits
Trade Expo / 05.05.19
TAPPI’s PaperCon brings together over 2000 paper and packaging professionals from around the world. Meet DuBois Pulp & Paper scientists May 5-8 in Indianapolis, IN at Booth #312 to explore fabric treatments and machine cleaning solutions that will maximize your productivity.
Recent Events / 10.02.18
The acquisition of the Water Treatment Solutions division of Triwater Holdings LLC, and its Klenzoid, Eldon Water, Chemco Products and Nashville Chemical brands, expands DuBois position in Canada and enhances our solutions for the institutional, light industrial, food and beverage and natural resources markets.
Recent Events / 06.18.18
IPAC Holdings (Innovative People Advancing Chemistry) joins DuBois. IPAC and Power Chemicals supports the needs of customers in the hard rock mining, coal, primary metals, bulk terminal, pulp and paper and water treatment markets.
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