Water Technologies & Solutions case study Find a contact near you by visiting www.suezwatertechnologies.com and clicking on “Contact Us.” *Trademark of SUEZ; may be registered in one or more countries. ©2017 SUEZ. All rights reserved. ch392.docx May-12 refinery replaces iron sulfate to reduce sludge and saves US$250,000 challenge This German refinery's use of iron sulfate to help separate oil and solids in its dissolved air flotation (DAF) unit was resulting in an excessive generation of sludge from its wastewater treatment facility. This sludge was difficult to dewater and required supplemental fuel for incineration. solution The refinery and SUEZ worked together to design a more effective treatment program, in which the iron sulfate and another

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