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Phone: 320-763-9340
Toll Free: 800-972-6318
Fax: 320-763-9342

2115 Jefferson Street,
Alexandria, MN 56308

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Hours

Office Hours
Monday-Friday 8-12 and 1-4:30
Closed Saturday and Sunday

Recycling Center Hours
Monday-Friday 8-5
Saturday 9-2
Closed Sundays

Hazardous Waste Hours
Monday-Friday 8-12 and 1-4
Closed Saturday and Sunday
No appointment necessary

 

 

 




Waste-to-Energy Facility

Background

The Pope/Douglas Solid Waste Joint Powers Board was formed in 1983. The purpose of the organization is to own and operate a solid waste management system. The system is owned and governed by Pope County at 25% and Douglas County at 75%.

The Waste to Energy Facility (WTE) was constructed in 1986 and began accepting waste in April of 1987. A recycling program was implemented in December of 1988. The goal of the recycling program is to keep materials that are harmful or bulky out the the system and increase the life of the incinerator and equipment.

In 2011 a third combustion unit was added to the WTE Facility to meet the solid waste management needs of Pope and Douglas Counties.

The Waste to Energy facility is permitted to process 240 tons per day. It operates 24 hours per day, 365 days a year. The facility has a pit that is 20 feet deep where the industrial wastes and sorted wastes from the sorting facility are mixed together. A grapple picks up the waste and loads it into the incinerator where it is burned at 1,800F. During the incineration process 76,000 M pounds of steam, at 170 pounds of pressure, is generated.

The steam is sold or used by the following:

Monitoring Methodology

The Waste To Energy plant is monitored by the Continuous Emission Monitoring System which constantly monitors the following:

The maximum opacity permitted by the State of Minnesota is 10%. The Pope/Douglas normal opacity is 0% to .5%. The white plume that is coming out of the stack is simply steam vapor.

Each quarter, the Continuous Emission Monitoring System records have to be compiled into a report and sent to the Minnesota Pollution Control Agency in St. Paul to prove that Pope/Douglas is in compliance. All of the parameters are indicators of how thorough the burn process is.

There is a limit on Carbon Monoxide (CO). The limit is 100 ppm (parts per million). Pope/Douglas results indicate 0-15 ppm.

Another type of test run is called Scheduled Stack tests which occur on each unit for mercury and dioxins. The limits on mercury are 14 micrograms per dry standard cubic meters (dscm) which are extremely minuscule. The latest tests performed at Pope/Douglas are:

February 2014 - Unit #1 - 2.62 micrograms
February 2014 - Unit #2 - 1.91 micrograms
February 2014 - Unit #3 - 0.72 micrograms

The Federal Limit for Dioxins is 125 Nangorams per dry standard cubic meter.  We knew we could do better so we took a self- imposed state limit of 20 Nanograms on Unit 1 & 2, and 13 Nanograms on Unit 3.  Our latest test results were:  16 Nanograms on Unit 1, 13 Nanograms on Unit 2 and 2.4 Nangorams on Unit 3.

These test results show that Pope/Douglas is in compliance and the emissions at the Pope/Douglas Waste To Energy plant are well below the standard. However; it is important to realize that the emissions are a direct result of the material people discard into the trash.