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14-22: pH Impact on Inhibitor PerformanceWater treatment chemists have long observed that some scale inhibitors work better at high pH rather than low pH and that some inhibitors have little, if any activity at very low pH. Examples would be the effectiveness of polyacrylic acid at high pH as a calcium carbonate inhibitor, as in ash sluice and some mining applications, mediocre performance near a neutral pH, as in cooling water applications, and very low activity in an acid pH range, as in

This paper describes a new Aseptrol ClO2 delivery system that is capable of at least two months of unattended operation in small-to-medium-size cooling systems up to 30

Examples would be the effectiveness of polyacrylic acid at high pH as a calcium carbonate inhibitor

selection of electrode materials of construction

it is important to know all of these factors to make sure that the drift loss of a tower is minimized

they also must manage their operating risks

In comparison to standard methods

In a typical cooling loop

Recent EPA rulings favor the increased use of alkaline cooling water treatments in recirculating systems

how to choose among them

2) the breakdown and removal of bio-film and scale encrustation

and polymer dosage-and their effects on the dispersion of colloidal silt and iron oxide particles-are discussed

facilities personnel and owners

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