specializing in

water restoration


Hedin Environmental is a leader in the development of innovative, cost-effective mine drainage treatment technologies. Three of our successful research projects are listed below. These projects were funded by SBIR awards, government grants, and private foundation funding.

This project was initially funded by Phase I and Phase II awards from the USDA SBIR program in 1995.  Since the project was completed, Iron Oxide Recovery Inc. was formed and we have recovered and sold 3,300 tons of iron oxide from mine drainage sites. 

This ongoing project is developing a method for controlling phosphate releases from land-applied animal manures using mine drainage solids.  The project has been conducted in conjunction with Trout Unlimited, the National Fish and Wildlife Foundation and the PA Growing Greener Program.

This project was funded in 2005 by the PADEP BAMR.  It resulted in the development of the Drainable Limestone Bed technology, which provides a novel cost-effective method for treating acidic metal-contaminated mine water with limestone. The technology is being implemented at sites throughout the Eastern US.