14-22: pH Impact on Inhibitor Performance Dry CoolingWater 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
Traditional wet-cooling systems have good efficiency and low cost but high-water consumption
Tip design (Alternate tips vs
and approved as a valuable contribution to cooling tower literature
the regulations concerning the noise emission are prescribing more and more stringent requirements
Recent EPA rulings favor the increased use of alkaline cooling water treatments in recirculating systems
the reclamation of large amounts of agricultural water
Attention to these considerations will minimize the forces which the cooling tower must withstand
Complying with increasingly stringent water discharge limitations has forced a re-examination of current cooling water treatment practices
This code applies to mechanical and natural draft towers
blade design
Case Examples will be presented as well as implemented repair programs focused on this approach
more satisfactory means of condenser cooling than once through open systems have been sought by utilities
