Biosolid production at DG Sanitary District: 6 photos

Published: Tuesday, Aug. 6, 2013 4:45 p.m. CDT • Updated: Tuesday, Aug. 6, 2013 6:44 p.m. CDT

Nick Menninga, general manager of the Downers Grove Sanitary District, walks along channels where wastewater is treated and sludge is separated at the Downers Grove Sanitary District's Wastewater Treatment Center, 5003 Walnut Ave. on Tuesday, Aug. 6, 2013. (Matthew Piechalak photo)

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