Pollutants can occur in water in various forms, e.g. colloidal, suspended and dissolved. This type of pollution cannot be removed as such by DAF/DGF or by settling. A physical-chemical pre-treatment is needed to render them into a separable form. This can be achieved by means of coagulation and/or flocculation.

This combination of varying residence times and uncontrolled G-values is a major factor contributing to a disturbed floc growth. Floc structure, shape and size will differ widely, impeding subsequent separation by DAF/DGF or settling. To compensate for these poor characteristics, the retention time in conventional type flocculators is three to five times longer than those indicated by the jar test.

Why Choose GraphEAT™?

Controlled Velocity Gradients

Optimal and uniform growth by well-defined and controlled velocity gradients

Compact Configuration

Coiled pipe configuration results in a compact flocculator

Reduced Consumption

Reduced chemical consumption due to well defined flocculation conditions


Narrow residence time distribution & G-value distribution

Low Maintenance

No moving parts in the coiled pipe flocculator, resulting in low maintenance

Made Easy

Ease of installation and operation