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ALGAECHECKAlgaecide for use in cooling towers

Industrial cooling towers are essential to maintaining controlled temperatures in manyoperations. 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 idealenvironment for themselves to grow and multiply. A biofilm can grow on nutrients or substrateswhich can be found in water. When temperatures are high, for example in cooling towers, amatrix of different micro-organisms such as bacteria, fungi, EPS and algae can grow veryrapidly. The disadvantages of biofilm 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 ofthe cooling tower and there is an ongoing concern for guarding against the formation ofLegionella bacteria, which can contribute to Legionnaires disease in humans.

Algae growth can retard the heat exchange in the cooling system by reducing water flow ratesthrough the cooling tower and can also provide a severe source of dispersed solids within thesystem. These can eventually foul a system to the extent that it is almost totally inoperative orthat 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 watersystem. Thus, in a cooling tower algae growth is noted most prominently in the bottom of thedistribution pan.

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Another major problem in cooling tower maintenance is SLIME (Pastry OrganicMaterial) Deposit in Heat transfer surface of Heat exchanger called FOULING. Thisinterferes with heat transfer operation of cooling cycle which reduces the efficiency ofHeat transfer thereby resulting in direct / indirect commercial loss.

CONTENTS:Quinnine Sulfate, Acriflavine, Elemental Copper, Malachite Green, Rhodamine.

SUGGESTED DOSAGE:

SHOCK DOSING of 1 ppm of ALGAECHECK for the volume of water in COOLINGCIRCUIT for a short period of about 10 Minutes maximum or sudden dumping of

ALGAECHECK in one minute in the C.T. hold up tank, will effectively control Algae andSlime fouling. SHOCK dosing is to be done once in a day (i.e. once per 3 shifts)

STORAGE & HANDLINGStore in a cool dry place, away from direct sunlight, under lock and key;No special handling required.