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CHEMICAL TREATMENT OF COOLING WATER: A WAY TO REDUCE WATER CONSUMPTION AND ENVIRONMENTAL POLLUTION


GAVRILÄ‚ LUCIAN*, GAVRILÄ‚ DANIELA**
*UNIVERSITY OF BACÄ‚U, DEPOLLUTION ENGINEERING LABORATORY, **SOFERT S.A. BACÄ‚U, ROMANIA

Issue:

MOCM, Number 6

Section:

Issue No. 6 (2000)

Abstract:

In an open recirculating cooling system, the cooling water is permanently exposed to the atmosphere, saturating with oxygen and absorbing gaseous contaminants (sulfur compounds, nitrogen oxides, ammonia) that exist in the atmosphere of the process plants. The absorbed contaminants, together with the dissolved solids from the make-up water increase the aggressive character of the cooling water. The corrosion, scaling and fouling are emphasized and fastened, finally leading to the worsening of the heat transfer rate and to a premature failure of heat exchangers and pipes network. A proper chemical treatment of the cooling water leads to corrosion mitigation, descaling of pipes and equipment, prevents fouling, subsequently leading to an improved heat transfer and reduced fresh water consumption. The paper presents the advantages of chemical water treatment in industrial cooling circuits.

Keywords:

water pollution, cooling water, corrosion, scaling, fouling.

Code [ID]:

MOCM200006V00S01A0028 [0000564]


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