Industrial cooling towers are essential to maintaining controlled temperatures in many operations. Since these systems often use water or fluids, algae problems are common. Moving water can create an unstable environment for micro-organisms thus some micro-organisms have evolved in a manner that they can adhere to surfaces and create an ideal environment for them to grow and multiply. A biofilm can grow on nutrients or substrates which can be found in water. When temperatures are high, for example in cooling towers, a matrix of different micro-organisms such as bacteria, fungi, EPS and algae can grow very rapidly. The disadvantages of bio-film formation in cooling towers can be enormous: Historically, algae, along with biofilm formation can be a problem inside the cooling tower basin and on nearby grids. These types of growth can have a negative influence on the efficiency of the cooling tower and there is an ongoing concern for guarding against the formation of Legionella bacteria, which can contribute to Legionnaires disease in humans. Algae growth can retard the heat exchange in the cooling system by reducing water flow rates through the cooling tower and can also provide a severe source of dispersed solids within the system. These can eventually foul a system to the extent that it is almost totally inoperative or that an over-flow of the tower deck results. There are various types of algae including brown algae, red algae, blue green algae, filamentous algae and green algae. Algae growth cycles vary depending on algae type and environment including pH, temperature, available light, and nutrients like Nitrogen and phosphorus. Troublesome algae generally adhere to the bottom surface of the exposed portion of the water system. Thus, in a cooling tower algae growth is noted most prominently in the bottom of the distribution pan. Another major problem in cooling tower maintenance is SLIME (Pastry Organic Material) Deposit in Heat transfer surface of Heat exchanger called “FOULING”. This interferes with heat transfer operation of cooling cycle which reduces the efficiency of Heat Transfer thereby resulting in direct / indirect commercial loss.
NOVEL FEATURES OF NILALG_CT
Broad spectrum activity
Can replace hazardous Chlorine, Bromine etc.
Effectively control algae, bacteria and fungi growth in recirculating water systems.
Immediate inhibition of growth on coming in contact with a microorganism.
SUGGESTED DOSAGE: SHOCK DOSING of 1 ppm of NILALG_CT for the volume of water in COOLING CIRCUIT for a short period of about 10 Minutes maximum or sudden dumping of NILALG_CT in one minute in the C.T. hold up tank, will effectively control Algae and Slime fouling. SHOCK dosing is to be done once in a day (i.e. once per 3 shifts)