PRE-TREATMENT

PRE-TREATMENT

PRE-TREATMENT IS A VITAL PART OF ALL WATER TREATMENT SYSTEMS

All water treatment systems should include “adequate” pre-treatment. The definition of “adequate” may vary depending on the site specific application conditions and the physical and chemical properties of the influent water.

 

The primary objective of pre-treatment is to prepare the water for additional downstream treatment. For some applications, simply adjusting the pH of the water will effectively change the physical characteristics of the water and perhaps will provide easier downstream treatment. A well designed pit system that removes settleable heavy solids will reduce the burden the downstream equipment from being overwhelmed. If changing or adding the pit system is not feasible, perhaps adding an above-ground cone-bottomed clarifier tank is an option. For some applications, where there is an abundance of free-floating oils in the water, pre-treatment to remove excessive amounts of free-floating oils prior to addressing the emulsified oils may be required.

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