Polymers are used in the headworks of wastewater treatment to facilitate flocculation. Polymers also aid in de-watering of digester cake, reducing the water content and permitting easier, less expensive transport of waste materials to the landfill.
Polymers present unique storage challenges and require the right storage solution for safety and cost effectiveness. Let’s explore these challenges and solutions.
Polymer Storage Challenges
Cationic and anionic are high molecular weight polymers. Polymers are very slippery chemicals, leading to slips and falls from spills or leaks. Polymers can be delivered neat; other times they require blending. In addition, polymers can be an environmental stress crack agent.
4 Polymer Storage Tips
1. Require Superior Tank Strength- High density cross-linked polyethylene offers superior strength at a long-term cost advantage for storage of high weight polymers. XLPE offers economies of scale for polymer storage for the size of the tank as opposed to fiberglass.
2. Minimize Leaks- To reduce the potential for leaks and spills and minimize slips and falls, it’s important to limit sidewall penetrations of the storage tank. With Poly Processing’s Integrally Molded Flanged Outlet, or IMFO® system, the flange is molded into the bottom of the tank, minimizing sidewall fittings and additional potential for leaks. Since the flange is created from the same material as the tank – it’s not an insert introduced during or at post production- the IMFO® system provides the superior tank strength required for storing heavy weight polymers.
3. Permit Easy Blending- Open top tanks are available in a variety of sizes. Tanks can be highly customized to accommodate a mixer used in your operation.
4. Minimize Corrosion- As opposed to steel or fiberglass, high density cross-linked polyethylene offers a cost effective, durable, high strength storage solution that resists corrosion.
Polymers are necessary chemicals for cost effective removal of solid wastes in water treatment operations. Specialized solutions are required to meet the unique challenges storage of polymers present.