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1～30 item / All 141 items
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Why does carryover occur? [Basic Knowledge]
What are the chain failures that occur when neglecting to blow down? From alkaline corrosion to scaling.
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What is boiler blowdown? 【Basic Knowledge】
Why is canned water concentrated? An explanation of the roles of continuous blow and bottom blow.
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Why do once-through boilers become unstable? [Basic Knowledge]
Is the rapid steam generation and instability caused by the same factor? An explanation of the structure of a once-through boiler.
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How to choose a filtration method? [Basic knowledge]
Is the optimal method different for river water and well water? An explanation of how to choose a filtration system.
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Why can ion exchange resins be regenerated? [Basic Knowledge]
Can table salt be used multiple times? The regeneration principle of ion exchange resin and exchange guidelines.
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What is the difference between softening water and purifying water? 【Basic Knowledge】
Does water made with a softener contain sodium? The difference between the mechanisms of softening and purifying water.
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What is the pH regulation of boiler blowdown? [Basic Knowledge]
Why is neutralization necessary for alkaline corrosion-resistant water? An explanation of the standards of the Sewerage Act and the Water Pollution Control Act.
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Why is boiler condensate prone to corrosion? [Basic Knowledge]
Is higher purity more prone to corrosion? Reasons for managing boiler water at around pH 11.
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What is ion exchange in soft water systems? [Basic Knowledge]
Why is hard water the source of scale? An explanation of WHO standards and the mechanism of ion exchange.
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Boiler scale removal, why is it labor-intensive? 【Basic Knowledge】
If the corrosiveness is low, is monitoring unnecessary? The concept of boiler chemicals.
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What are the measures for freezing in cooling towers by location? 【Basic Knowledge】
Piping, valves, flow meters... An explanation of freeze prevention measures around cooling towers by location.
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What is cooling tower scale? 【Basic Knowledge】
Does it become concentrated enough to evaporate water? An explanation of the nature of cooling tower scale.
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What are the measures to prevent freezing in cooling towers? [Basic Knowledge]
Does water expand by about 9% when it freezes? Key points to prevent freezing damage in cooling towers.
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What is the route of infection for Legionella bacteria? [Basic Knowledge]
Hot springs, baths, and showers also require caution? An explanation of the infection routes of Legionella bacteria.
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How to inspect a cooling tower? 【Basic Knowledge】
Once a month and once a year, a gentle explanation of the legal inspection items for cooling towers.
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What are cooling towers and Legionella bacteria? [Basic Knowledge]
Why do they parasitize and multiply in amoebas? An explanation of the risks and symptoms of Legionella bacteria.
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Why is cleaning the cooling tower necessary? 【Basic Knowledge】
The essential reasons for reducing electricity costs, addressing Legionella, and cleaning cooling towers.
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What is the impact of scale impairment? 【Basic Knowledge】
Is it just a decrease in thermal efficiency? The cost increase and pipe corrosion caused by scale issues.
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Why is water treatment for cooling towers necessary? 【Basic Knowledge】
Reasons why water treatment agents are necessary for corrosion, slime, scale, and Legionella prevention.
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What are the benefits of using water treatment chemicals? 【Basic Knowledge】
Why can using chemicals save water? An explanation of the benefits of water treatment for cooling water.
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Where is flock born? 【Basic Knowledge】
What can be understood about the appearance of flocs from the aggregation test? An explanation of the generation process at water treatment plants.
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What is the mechanism of air conditioning and heating? [Basic Knowledge]
Why does alcohol disinfection feel chilly? An explanation of the principles of air conditioning heating and cooling.
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What is the difference between a cooling tower and a chiller? [Basic Knowledge]
Is it just for cooling? Explaining the difference in purpose between cooling towers and chillers.
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What is a cooling tower? [Basic knowledge]
Why does water cool down when it evaporates? An explanation of the mechanism of cooling towers.
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What are the causes of poor coagulation? 【Basic Knowledge】
Why can't flocculation occur? An explanation of the causes of poor aggregation and the effective pH range.
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What are the types of polymer flocculants? 【Basic Knowledge】
What are the polymer coagulants suitable for wastewater that are anionic, nonionic, cationic, and amphoteric?
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What is a polymer flocculant? 【Basic Knowledge】
Why are inorganic coagulants not enough? An explanation of the mechanism for creating coarse flocs with "glue."
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What are iron-based coagulants and quicklime? [Basic Knowledge]
Explanation of the characteristics and differentiation of ferrous chloride, polysilicic acid iron, and hydrated lime.
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What are the types of inorganic coagulants? 【Basic Knowledge】
What is the difference between PAC and aluminum sulfate? An explanation of how to choose based on "basicity."
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What is flock? 【Basic knowledge】
Why doesn't garbage stick together in water? An explanation of how flocculation works with coagulants.
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