What are the chemicals used in cooling water treatment?
Here are the main chemicals that are frequently used in cooling tower water treatment:
- Corrosion and Scale Inhibitors.
- Algaecides and Biocides.
- pH Adjusters.
What is COC of cooling water?
What is COC meaning? COC or the Cycles Of Concentration is an abbreviation, used when talking about cooling water or cooling tower water. The COC specifies, how often a fresh water added into the loop, can be used or pumped around, before the water has to blown down or bleed off from the cooling tower.
Why are chemicals added to cooling water?
Chemicals Used To Clesn Cooling Towers These chemicals, which vary in both function and type, serve a number of purposes; primarily, they are meant to increase the longevity of the cooling tower and prevent issues like fouling, corrosion, and Legionella over time.
What are Antiscalant chemicals?
Antiscalants are a family of chemicals designed to inhibit the formation and precipitation of crystallized mineral salts that form scale.
What is TDS Chemical?
Total dissolved solids (TDS) comprise inorganic salts, principally calcium, magnesium, potassium, sodium, bicarbonates, chlorides, and sulfates and some small amounts of organic matter that are dissolved in water.
What is the pH of antiscalant?
Antiscalants Flocon® 260 (F-260) and PermaTreat® 191 (PC-191) were used. In the RO process, it was found that there was a critical pH value between 4.8 and 6.5, above which permeate pH was lower than the feed pH, but below which the reverse was observed.
What is SMBS dosing?
Sodium metabisulfite [SMBS] is the typical chlorine reducing agent of choice for larger RO systems. A dosing rate of 2.0 to 3.0 ppm SMBS per 1.0 ppm chlorine so as to include an industrial safety factor for brackish water RO systems with at least 20 seconds of reaction time.
What is the pH value of chilled water?
8.8 to 9.5
Closed hydronic systems, including low temperature, hot-water heating, chilled water and glycol cooling and/or heating, shall have the following water qualities: 1. pH: Maintain a value within 8.8 to 9.5. 2.
What is alkalinity in cooling tower water?
Alkalinity levels are typically controlled by dosing a small amount of acid in the circulating water to suppress the formation of calcium carbonate scale. Otherwise, alkalinity is limited to 300 ppm, especially for wooden or galvanized iron cooling towers.
What is water pH value?
Normal drinking water generally has a neutral pH of 7. Alkaline water typically has a pH of 8 or 9.