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Veolia Water Solutions & Technologies Veolia Water Solutions & Technologies <The client> BerkeMOL® technology BerkeMOL®LIK Natural and Effective Cooling Water Disinfection • • • • • • • Highly effective in the removal and sustainable prevention of biofilms Reliable combating of legionella bacteria and other microorganisms Increase of energy efficiency Nanotechnology in the catalytic water treatment Environmentally friendly by eliminating the use of non-oxidizing biocides, providing a biocide-free disinfection Sustainable reduction of energy and operating costs Compliance with VDI 3803 and VDMA BerkeMOL® LIK Biocide-free disinfection through a high performance solid-state catalyst and a specific wavelength range of light Applications • • • • • • Open cooling systems Semi-open cooling circuits Once-through cooling systems Water cycles in the plastic industries Process water i.e. as a pretreatment for RO systems Rehabilitation ® BerkeMOL Cooling water <The The useclient> of water as a coolant is based on its wide availability and high heat capacity. However, dissolved gases and salts favor biological growth, hardness and corrosion. Bio-fouling and scaling result in organic and mineral deposits on the surfaces of the water conducting systems. The intensive use of water as a coolant will relay on the possibility to limit biological growth, scaling and corrosion through an economically-sound technology with high operational reliability. For this purpose, the technological measures chosen must be effective, predictable and measurable. Low environmental impact, easy to use and low operating costs are also of great importance. The implementation The catalyst module is installed at a suitable location of the cooling circuit (cooling tower pond, hot or cold water basin) based on the water volume and circulation rate. The light exposure is automatically controlled through a timer and it is defined according to the microbiological load of the system. Since there is an increase in salinity due to the evaporation of water in the cooling tower, a hardness stabilizer Hydrex 2240 can be added. As part of our maintenance agreements, we offer a continuously optimal cooling water treatment including regular water analysis and recommendations for operation in compliance with the applicable engineering guidelines and standards. The principle The BerkeMOL®LIK process rests on the interaction of the BerkeMOL® solid-state catalysts, light exposure and the germs moving freely in the water system. Under the exposure of light in a certain wavelength range highly reactive hydroxyl species are formed on the surface of the high-performance catalysts and thus biotensides are produced. These remove the biofilms present in the system, prevent regrowth sustainably and thus eliminate bacteria, especially legionella. Due to the elimination of the biofilms, microbiologically induced corrosion (MIC) is prevented and in addition corrosion inhibitors can work effectively on the free material surfaces. Undesired side effects for people and nature do not occur. MOL®LIK operates without the use of biocides. Benefits Low cost of ownership • Extended cleaning periods • Reduced chemical consumption • Reduced personnel expenses • Increased energy efficiency through improved heat transfer Environmentally sound • No formation of endotoxins or harmful byproducts • Increased safety at work • Health protection through Legionella control • Direct discharge of effluent possible BerkeMOL® LIK Time control unit for light exposure The Netherlands Belgium Veolia Water Solutions & Technologies Netherlands BV Celsiusstraat 34 NL - 6716BZ Ede T: +31(0)318 691 500 E: [email protected] Veolia Water Solutions & Technologies Belgium Esperantolaan 5 B - 3300 Tienen T: +32(0)16 7816 20 E: [email protected]