Podcast
Questions and Answers
What is the primary purpose of delignification in the wood?
What is the primary purpose of delignification in the wood?
- To remove the lignin from the wood (correct)
- To increase the roughness of the wood surface
- To bleach the wood white
- To glue the wood fibres together
What is the main cause of the deterioration of the wood when the chlorine residual is above 1 mg/L and the pH is above 8.0?
What is the main cause of the deterioration of the wood when the chlorine residual is above 1 mg/L and the pH is above 8.0?
- Crevice corrosion
- Stress corrosion cracking
- Microbiological corrosion
- Chemical attack (correct)
Which of the following is NOT a type of corrosion mentioned in the text?
Which of the following is NOT a type of corrosion mentioned in the text?
- Galvanic corrosion (correct)
- Crevice corrosion
- Pitting corrosion
- Stress corrosion cracking
What is the main cause of microbiological corrosion in the cooling system?
What is the main cause of microbiological corrosion in the cooling system?
Where is delignification most prevalent in the cooling tower?
Where is delignification most prevalent in the cooling tower?
How can delignification be controlled in the cooling tower?
How can delignification be controlled in the cooling tower?
What is the purpose of using oxidizing agents like chlorine and microbicides in cooling water systems?
What is the purpose of using oxidizing agents like chlorine and microbicides in cooling water systems?
In a once-through cooling water system, what happens to the water after it passes through the plant?
In a once-through cooling water system, what happens to the water after it passes through the plant?
What is the advantage of using closed recirculating cooling water systems?
What is the advantage of using closed recirculating cooling water systems?
In open recirculating cooling water systems, what is the purpose of blowdown?
In open recirculating cooling water systems, what is the purpose of blowdown?
Which type of cooling water system is commonly used in power and process plants?
Which type of cooling water system is commonly used in power and process plants?
What is the advantage of using evaporative cooling in open recirculating cooling water systems?
What is the advantage of using evaporative cooling in open recirculating cooling water systems?
