What additives should be added to circulating water?
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Today, the circulating water pipeline was flushed, and a lot of foam was found in the water flowing out. What is added to it and what is its purpose? Thank you
Corrosion inhibitors: prevent corrosion. Dispersants: prevent scaling. Biocides: prevent the growth of microorganisms. Detergents: remove oil. Defoamers: prevent excessive foaming in circulating water
Reply to 1# leisure929: bactericides, descalers, strippers
Sodium bicarbonate, sulfuric acid – for pH adjustment; calcium chloride – to control hardness
When treating circulating water, some additives are added according to the requirements for water quality. 1. Corrosion inhibitors: Slow down corrosion and ensure the stable operation of metal pipelines. 2. Scale inhibitors: Prevent the formation of scale in pipelines and equipment ； 3. Biocides: Prevent the growth of microorganisms in water ； 4. Sludge remover or descaling agent: Used to remove the bacterial sludge that forms inside pipelines and wash it away with water. 5. Antifoam agent: Used to reduce the foam generated by water flow. 6. Indicator: For certain specific requirements, indicators of particular colors are added to the water. 7. Cleaning agent: Used to ensure that substances suspended or emulsified in the water are evenly dispersed. It isn’t necessary to use all of these, but an appropriate amount will definitely be added as needed.