Complete report - Partners for Clean Streams

Issue 16 - Water Treatment Plant Sludge
Ohio EPA Recommendations Land Apply Spent Lime
Ongoing
Description:
Ohio EPA recommends the preferred reuse alternative of land application of spent
lime.
City of Toledo Spent Lime Reuse
Ongoing
Description:
Municipalities traditionally pay to dispose of the spent lime produced through the water
treatment process. Instead, the City of Toledo contracts out with a company to
excavate, transport and to find beneficial reuses for the spent lime. Approximately
30,000 cubic yards of spent lime is excavated out of the City ‘s lagoons annually,
approximately 40,000 wet tons of lime are transported from the water treatment plant
annually. There are several ongoing reuse programs, the following summaries
describe these programs:
Cement Processing
The City of Toledo sends approximately 10-20% of their spent lime sludge to a
Dundee, Michigan cement manufacturer, Holnam Inc. Holnam Inc. mixes the lime
into their Portland cement mixture rather than using virgin lime material from stone
quarries.
Lead Organization:
Collaborator(s):
S&L Fertilizer, contracted with the City of Toledo to find a
beneficial reuse for the product
City of Toledo, Holnam, Inc. (contractor), Ohio EPA, TLCPA
Landfill Liner Barrier
The City of Toledo sends approximately 10-20% of their spent lime sludge to BFI’s
Vienna Junction Construction and Demolition Debris landfill for use in the landfill’s cell
liner barrier.
Lead Organization:
Collaborator(s):
S&L Fertilizer, contracted with the City of Toledo to find a
beneficial reuse for the product
City of Toledo, BFI-Vienna Junction
Land Application
The City of Toledo sends approximately 10-15% of their spent lime sludge to local
agricultural fields where it is directly applied to the land to enrich the soil.
Lead Organization:
Collaborator(s):
S&L Fertilizer, contracted with the City of Toledo to find a
beneficial reuse for the product
City of Toledo, Ohio EPA, TLCPA
Production of “Tolcal”
The City of Toledo sends approximately 30-40% of their spent lime sludge to a local
Activities and Accomplishments
in the Maumee Area of Concern
214
Issue 16: Water Treatment
Plant Sludge