DDI Heat Exchangers Inc
DDI is a well-established company (since 1980) experienced in design & manufacturing of thick welded type "Rectangular, Square, Cube"™, NON-PLUGGABLE HEAT EXCHANGERS, specifically suitable for HEAT RECOVERY from liquid waste containing large size and high % of Solids, in Municipal Sludges & other processes. ROI in 1 year. DDI has designed and installed Sludge Heat Exchangers that have been operating for as long as 9 years without the need of any maintenance. Used as: A) Recovery of Wasted Heat from Sludge with 20% solids B) Preheating of Raw Sludge C) Cooling of Digested Sludge The cost for this innovative Heat Recovery Equipment could be recovered within a few months.


305 Baffin St.
D.D.O., QC H9A 3G4
Phone: 514-696-7961

Product Categories

Heat Exchangers


Are you planning to upgrade your current water/wastewater facilities in the next year?:
Between drought, algae, deteriorating infrastructure and increased regulatory scrutiny, the demands... more
Associations in the water and wastewater industry are accustomed to monitoring and advocating for... more
Time is running out. Every year, Water & Wastes Digest supports future water and wastewater... more
As Eleanor Roosevelt once quipped, “Great minds discuss ideas; average minds discuss events; small minds discuss people... more
New ideas such as a waterless car wash can be helpful in times of drought
I am an eternal optimist. Some people who know me and work with me may not always agree, but I am. I think this has to... more
Utilizing incentives to alleviate aging infrastructure & workforce concerns
As a former U.S. Environmen­tal Pro­tection Agency (EPA) water official, I am often asked to talk about... more
Email Subscriptions