What chemical is used in cooling tower?
Organic dispersants – These cooling tower water treatment chemicals can be used to prevent fouling and the accumulation of biofilms. Chlorine dioxide – This chemical can be used as a disinfectant to destroy microorganisms and prevent recurring growth.
What is the most common chemical that is used to control microbiological growth in cooling water systems?
Biocides are used to prevent microbial growth that can be harmful not only to the cooling tower but also to humans. The use of two biocides is very common because the microbes can often create a resistance if only one form of biocide is used.
What is cooling tower water treatment?
A cooling tower water treatment system is an arrangement of technologies that remove damaging impurities from your cooling tower feed water, circulation water, and/or blowdown. The specific configuration of your system will depend on several things, including: chemistry/makeup of your circulatory water.
How do I lower the pH in my cooling tower?
What You Can Do to Optimize the pH Balance
- Determine Water Quality. Start by taking measurements of the water’s pH, alkalinity, hardness and conductivity.
- Establish Target Cycles of Concentration.
- Monitor COC and Water Performance.
- Automate Your Processes.
- Protect Your Equipment.
- Work With Your Vendor.
What is TDS cooling tower?
Cooling towers are used within some businesses for process water cooling or as part of an air-conditioning system. ‘Bleed’, ‘blow-down’ or ‘dump’ cycles – as water is evaporated, concentrations of total dissolved solids (TDS) increase which is detrimental to the efficient operation of the unit.
Why are biocides added to cooling tower water?
Biocides are used to control bacteria in cooling water systems. Failure to implement a good cooling water biocide program may lead to bacteria and under deposit corrosion. Under deposit corrosion occurs when bacteria occurring within the water system. Under this bacteria, corrosion occurs.
What is ORP in cooling tower?
Chlorine is used as an oxidizing biocide to control this biological growth in most industrial cooling towers. ORP is a measure of a solutions oxidizing or reducing strength. The chemical way to look at redox processes is that the reductant transfers electrons to the oxidant.
What is ORP cooling tower?
What causes high pH in cooling tower?
The circulating water is aerated each time it passes over the cooling tower. This reduces the carbon dioxide concentration in the water to the equilibrium value for the atmospheric conditions, causing the pH to rise. The rapid increase in pH across the tower can lead to calcium carbonate scaling on the tower fill.
How is chemical treatment used in cooling and heating systems?
Chemical Treatment of water for Cooling and Heating Systems Chemical Treatment of water for Cooling and Heating Systems Prepared and Presented by: Casey Charepoo Outline •Water •Mechanical systems requiring water treatment •Water reaction to mechanical systems
How are corrosion inhibitors used in cooling systems?
Corrosion inhibitors may be used in cooling systems to modify the electro-chemical process and control the corrosion. Natural scale formation due to hardness salts may also affect the electro- chemical process and provide a degree of corrosion control (see Appendix 3).
How is microbiological fouling of cooling systems controlled?
These problems can be controlled through proper biomonitoring and application of appropriate cooling water antimicrobials. Microbiological fouling in cooling systems is the result of abundant growth of algae, fungi, and bacteria on surfaces.
How does microbial activity affect a cooling tower?
Wood-destroying organisms may penetrate the timbers of the cooling tower, digesting the wood and causing collapse of the structure. Microbial activity under deposits or within slimes can accelerate corrosion rates and even perforate heat exchanger surfaces. MICROBIOLOGY OF COOLING WATER