GENERAL INFORMATION
The Westlake Environmental Chemical Addition Systems (CAS) are designed to thoroughly mix a chemical recipe to establish coagulation, flocculation, pH adjustment or metals precipitation, depending on the application. We design and manufacture a complete line of systems to meet your needs.
OPERATION
Raw water enters the Chemical Addition System where chemicals are fed and thoroughly mixed in each chamber prior to discharge. Each chamber includes a chemical pump, mixer, and pH probe. A control panel is also provided to fully automate the system, requiring minimal operator interface. Equipment is completely assembled and tested prior to shipping, ready for installation on a concrete pad.
TERMS
Coagulation: Gelling or lumping of particles, typically a colloid, to form a pin floc. In Coagulation a chemical is added that produces positive charges to neutralize the negative charges. The particles then stick together, forming larger particles that are easier to remove via settling or floating.
Flocculation: A process similar to coagulation but differs in that it is used as a complimentary step to develop an even larger, robust particle. Flocculation is almost always used in conjunction with and preceded by coagulation. The process is generally accomplished by slow mixing to allow the particles to come into contact with one another and bind, enhancing the settling or floating process.
pH Adjustment: pH is the measure of the acidity or alkalinity of a solution. A pH of 7 is neutral; 0-7 is the acidic range and 7-14 is the alkaline range. pH adjustment is required for a variety of applications such as metal precipitation, correcting pH for polymer and coagulant use, emulsion breaking and pH adjustment prior to city discharge.
Metals Precipitation: Most common metals that are dissolved in a waste stream can be precipitated from their ionic state by raising the pH. Once the metals precipitate and form solids, they can easily be removed by float or settling methods.
Westlake Environmental manufactures a complete line of Chemical Addition Systems. Contact Westlake Environmental for more information at 616-610-1450 or at sales@westlakeenv.com.