Due to the increase in the amount of people into the area the Val Vista Water Treatment Plant that was used by the cities of Phoenix and Mesa Arizona needed to increase its capacity to meet the demand of so many people into the area. In order to do this, they had to replace the old outdated 7.5-hp mechanical mixers that had previously been used to add chemicals into the water stream. The old mixers simply could not handle the increased capacity.
To do this, the engineering company of James M Montgomery that was hired to complete the job looked at several alternatives and came to the conclusion that other mixers were either too costly or simply could not handle the capacity that was needed. As a result they came to Komax Systems to replace the old mechanical mixers with a static mixer. Komax was asked to design a mixer that would fit into the 8 foot channel that the water passed through.
The static channel mixer that Komax designed, which was installed in less than a week, was 20 feet long and had two mixing units that were lined with placite, which is an epoxy coating, to prevent corrosion. This mixer had a head loss of two feet and a total mixing time of only 5 seconds. It flowed at the rate of 140 millions gallons of water a day, which was more then enough to meet their needs. The next step in the process was for the water to go into a flocculation basin where it would be treated with certain chemicals for 35 minutes. The water then goes into another basin so the floc will settle out. It is then sent through dual media bed filters of anthracite, coal and sand and is then either sent out to the cities or held in a reservoir until needed.
After several months of operation, an analysis showed that the Komax large scale channel mixer greatly reduced operating costs for the Val Vista Water Treatment Plant and was easily able to handle the increased capacity that was needed.