UV disinfection is proven to prevent the build-up of biofilms and destroy mussel larvae and other microorganisms that can cause heat exchangers and cooling systems to blind and fail. In addition, UV disinfection is highly effective at reducing SRB’s to protect equipment from Microbial Induced Corrosion (MIC) and damage from H2S.
Water sources such as seawater, fresh water and brackish water used for cooling loops and heat exchangers carry a major risk of microbial contamination. Operating at increased temperatures that provide the optimum environment for growth, operators are required to treat and disinfect source water to protect their systems and piping networks from negative consequences such as mussel growth, biofilms, EPS layers and Microbial Induced Corrosion (MIC) caused by acid producing bacteria such as SRB’s.
Traditionally, chemical dosing with chlorine or electro chlorination have been used to protect the process, however strict limitations on discharges to the environment of wastewater, together with the high cost of transporting, storing and dosing chemicals have seen operators look for alternative, environmentally friendly water treatment solutions.
UV disinfection of fresh water, brackish water and seawater provides a highly effective, low cost alternative to chemical biocides for eliminating all known microorganisms, including acid producing bacteria such as SRB’s and chlorine resistant, biofilm forming bacteria such as Mycobacterium Avium and Mycobacterium Intracellulare.
When high doses of UV light at 254 nm as the primary technique for controlling bacterial growth, operators have been able to reduce the need for chlorination by of 90% from the process significantly improving the environmental profile, simplifying operations and lowering operational costs.
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