For which applications?

In water and wastewater treatment, coagulation-flocculation involves the addition of chemicals which join the small, destabilized particles together into larger aggregates so that they can be more easily separated from the water. Coagulation-flocculation is used in most cases as a pre-treatment process to remove nutrients (phosphorus), organics and in some cases also metals from different types of wastewater before primary treatment. However, for some industrial wastewaters the coagulation-flocculation can offer an efficient treatment solution as a stand-alone process.


How does it work?

Coagulation is a chemical process that involves neutralization of charge by adding positively charged metal ions which neutralizes the negatively charged particles present in wastewater. Flocculation on the other hand is a physical process where neutralized particles will join together and form aggregates. The coagulation-flocculation process can be used as a preliminary or intermediary step between other water or wastewater treatment processes like filtration and sedimentation. Iron and aluminum salts (FeCl3, Fe2(SO4)3, Al(OH)xCl3-x, Al2(SO4)3) are the most widely used coagulants, however salts of other metals such as titanium and zirconium have been found to be highly effective as well.


How can InOpSys help?

Based upon our profound background and many years of academic research we can screen and determine the right coagulation/flocculation (pre-)treatment for your wastewater. In our lab we can execute lab testing and if required we can provide pilot scale units. Finally we design, construct and operate a full flexible, modular and mobile (ATEX certified) unit, to treat your wastewaters on-site.


Who can you contact on this matter?

Dr. Bert Bastiaens

R&D Project Leader

Specialised in: Coagulation/Flocculation


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