Generally .5 ppm of iron will stain and discolor white textiles. Chlorine is not a good choice for washing textiles when there is any significant amount of iron present in the water. The best way to wash under the conditions where iron is present is to use oxygen bleaches. When using commercial laundry equipment, an iron removing sour can strip iron or control the presence depending upon the concentration of the bath, and lower pH value of the water in the bath.
When iron is causing significant textile cleaning and whiteness problems in a laundry operation, I recommend installing a water softening system that utilizes de-iron salt pellets. A water softener can remove up to .2-.3 ppm of iron. This approach has great benefits for cleaning, whiting, and maintaining tensile strength of the textile fabric over more costly chemical alternatives.
Quick Rinse - News From Around The World
Laundry to Reduce Air Emmissions and Fund Cleaner Burning Wood Stove Purchases
BOSTON, Mass. — Alltex Uniform Rental Service, an industrial laundry in Manchester, N.H. has agreed to settle claims by the US Environmental Protection Agency that it violated the Clean Air Act by paying a civil penalty of $65,000. They will also be undertaking a Supplemental Environmental Project with a value of at least $220,000 to replace old, polluting wood stoves in southern New Hampshire with new, cleaner models. Additionally, the company will install equipment at its facility to remove approximately 20 tons per year of emissions of volatile organic compounds (“VOCs”). G&K Services is the parent company of Alltex Uniform Rental Service Inc. The EPA action grew out of an EPA inspection of the facility in July 2008.