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Biocides: For Cooling Systems, Cooling Towers, Cooling Water

Biocides are often used to control bacteria development in chillers, cooling towers, and cooling water systems.  Common Biocides to control bacteria are Isothiazolin and Gluteraldehyde.  Failure to implement a proper biocide program may lead to under deposit corrosion and a loss of heat transfer often resulting in premature water system failures. 

Bacteria dipslides are often used to monitor bacteria. Isothiazolin and Gluteraldehyde are slug fed to control bacteria growth in your cooling systems.
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Glutaraldehyde
45% Glutaraldehyde - 5 to 55 Gallon Containers

DESCRIPTION AND USE Gluteraldehyde is a highly concentrated microbiocide for use in recirculating cooling water and air washer systems. The product is effective over a wide pH range against slime forming bacteria, sulfate reducing bacteria and fungi. The product functions to kill these microorganisms by reacting with the cell wall. Thus, it possesses many unique features when compared to other materials:

  • Very effective over a broad spectrum of organisms.
  • Aqueous solution which is relatively safe to handle and is easily diluted and mixed when treating.
  • Unlike most non oxidizing biocides, it will function to clean up a biologically fouled system.
  • Functions over wide pH and temperature ranges and will not react with the wide range of inhibitors and anionic dispersants used in modern cooling water treatment.
  •  It is non surface active and therefore will not foam when used. 
CHEMICAL FEEDING AND CONTROL When a system is noticeably fouled, BioGuard 46 should be slug dosed to establish a concentration of 50 to 100ppm actives in the recirculating water (i.e. 4.6 9.2 fl. ozs/100 gals. contained water). Once control is evident, a dosage of 20 to 50ppm (1.8 4.6 fl. ozs/100 gals.) on a weekly basis will normally maintain control unless unusual conditions develop.
Sodium Hypochlorite
Sodium Hypochlorite - 5 to 55 Gallon Containers

DESCRIPTION AND USE

BioGuard 156 is a solution of sodium hypochlorite (Minimum 12.5% as NaOCl) for use in the treatment of various water systems. It is used for controlling organics which can contaminate systems and as an oxidizer for iron prior to filtration. It can be used for the treatment of potable water as long as EPA guidelines with respect to the maximum amount of chlorine are met.
Isothiazolin
Isothiazolin - 5 to 55 Gallons

Isothiazolin is an excellent slimicide for use in recirculating cooling water systems. The product is effective over a wide pH range against a wide range of slime forming bacteria typically found in these systems.
Stabilized Liquid Chlorine Bromide
Stablized Liquid Chlorine/ Bromide - 5 to 55 Gallon Containers

Stabilized Chlorine/Bromide is used for the treatment of open, recirculating cooling towers, evaporative condensers, air washers, decorative fountains, certain ponds and other water systems. The product is supplied as a low viscosity, easily pumped liquid. When added to water, the product forms stabilized hypobromous and hypochlorous (HOBr and HOCl) acids. However, unlike chlorine, the stabilized bromine/chlorine maintains full activity at the wide pH range generally encountered in cooling water systems
   
 
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For more information on any product or for other blends not listed, please contact our sales department at (800) 658-7716 or email us at sales@qualichemtech.com