Improving Rinse Fluids Through Filtration - Two Case Studies

Event Time

Wednesday, April 29 4:10 PM - 4:40 PM

Event Information

Title: Improving Rinse Fluids Through Filtration - Two Case Studies


Attendees will learn about two AOEMs in the continental US that reduced filtration use and saved water using newly applied filtration means.  Both circumstances are novel in the application of large format filtration and hollow fiber systems.

Type: Learning Station I: Water and Paint Solids Conservation


Paint lines are known as one of the major water consumers in automotive OEMs.  Multiple rinse tanks throughout the pretreatment line are typically sourced from municipal or natural sources.  The water may be used as supplied or may be treated by techniques such as deionization or reverse osmosis.

In a first case study, an OEM wanted to improve filtration in their pretreatment rinse line without incurring higher filtration costs.  3M and TriDim trialed large format, high flow rate filter elements to address this need.  The substantial increase in the filtration surface area and decrease in micron rating resulted in cleaner rinse fluids and improved vehicle surface quality while providing long filter life.  In addition, the horizontal filtration design provided ergonomic benefits for the operators.

In a second case study, an OEM faced a source water crisis, when the nearby provider could no longer supply adequate fluid for all processes.  3M trialed a hollow fiber crossflow filter system to recycle water in lieu of direct disposal.  Relevant impurities in the used water were filtered and the purified water was recirculated through the cascading rinse lines, easing the burden on the reverse osmosis system and minimizing waste stream fluid.