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In 2003, 22 students from Iowa universities and colleges joined the DNR's Pollution Prevention Intern program.
During their 12-week internships, students researched methods of reducing waste and preventing pollution at their
host companies, and compared the costs of current procedures and proposed practices.
The following case studies demonstrate the intern recommendations and company efforts, with impressive environmental
and economic results.
Advanced Brands: Improve wastewater treatment process and reduce water usage to decrease chemical and
utility costs; implement utility tracking system to identify potential improvement projects.
Case Summary
Alcoa: Develop a plan to meet Company solid waste reduction goals.
Case Summary
Alliant Energy: Complete a pilot test of equipment designed to reduce emissions and improve system
performance.
Case Summary
Case: Reduce emissions through improvements to the coating and painting processes; conduct a water balance
and identify water conservation opportunities; and improve recycling programs.
Case Summary
Dial: Complete an energy evaluation to reduce energy costs; will include data collection, data evaluation,
and recommendations for demand control.
Case Summary
Donaldson: Reduce product scrap for material savings and landfill avoidance; evaluate markets for solid waste
streams.
Case Summary
Dupont: Identify opportunities to reduce, reuse, and/or recycle wastes; implement cost-saving opportunities
identified through a DNR Waste Reduction Assistance Program (WRAP) audit.
Case Summary
Federal-Mogul: Develop a material flow map that will be used to identify where waste is generated; identify and
evaluate opportunities to implement pollution prevention projects and reduce operational costs; identify energy
saving opportunities.
Case Summary
Gomaco: Work with employees and vendors to identify technical improvements in equipment and coating systems,
which will improve efficiency and reduce waste.
Case Summary
Heinz: Reduce packaging waste to save on disposal and transportation costs; identify markets to create a
revenue for waste stream.
Case Summary
Holcim: Audit the compressed air system to identify and implement energy saving opportunities.
Case Summary
John Deere Foundry: Optimize groundwater supply system for energy savings; implement equipment reuse and
recycling program to reduce purchasing and landfill costs.
Case Summary
Kraft: Conduct a material water balance and identify water conservation opportunities; evaluate the wastewater
treatment system, including disposal options for liquid waste.
Case Summary
Lear: Quantify scrap rates and improve reuse/recycling to reduce solid waste disposal costs.
Case Summary
Midwest Industries: Identify the root cause for paint waste, identify process improvements, and
complete economic analysis of various alternatives.
Case Summary
Omega Cabinetry: Reduce emissions through process modifications to the finish line; identify and
improve low-yielding processes to increase material and labor productivity.
Case Summary
Pella: Conduct a solid waste audit and identify pollution prevention opportunities for the three
largest waste streams to reduce landfill tonnage.
Case Summary
Penford: Reduce electrical power demand by optimizing pump and fan systems; implement energy saving
opportunities.
Case Summary
Polaris: Improve the wastewater treatment system through capital improvements, chemical substitution in
the production process, and process modifications, resulting in energy savings and wastewater disposal cost
savings.
Case Summary
Pure Fishing: Utilize an energy management system to lower electrical usage throughout the plant;
collect and evaluate data to characterize electrical distribution; rank energy conservation opportunities;
implement improvement projects.
Case Summary
Quaker Oats: Identify, quantify and prioritize environmental waste streams through Pareto analysis
and other tools; prepare financial analysis and report of recommendations.
Case Summary
Tone's: Reduce product and packaging losses through process changes to save material costs and disposal
fees.
Case Summary
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