Podcast
Questions and Answers
What is the main cause of temporary hardness in water?
What is the main cause of temporary hardness in water?
- High temperature
- Presence of dissolved bicarbonates Ca and Mg (correct)
- Presence of dissolved sulphates and chlorides
- Special methods like lime soda process
How can temporary hardness be easily removed?
How can temporary hardness be easily removed?
- By boiling the water (correct)
- By increasing the concentration of calcium and magnesium ions
- By using zeolite process
- By using special methods like lime soda process
What is the main cause of permanent hardness in water?
What is the main cause of permanent hardness in water?
- Using zeolite process
- Presence of dissolved bicarbonates Ca and Mg
- Presence of dissolved sulphates and chlorides (correct)
- High temperature
Why is hard water less likely to lather well?
Why is hard water less likely to lather well?
What are the main concerns for consumers regarding hard water?
What are the main concerns for consumers regarding hard water?
Why do calcium and magnesium ions need to be removed or treated with a softener prior to entering a boiler system?
Why do calcium and magnesium ions need to be removed or treated with a softener prior to entering a boiler system?
What is the purpose of lime-soda softeners?
What is the purpose of lime-soda softeners?
What is the pH at which the reactions occur in the lime-soda softening process?
What is the pH at which the reactions occur in the lime-soda softening process?
Why is the hot process of lime-soda softening more common than the cold process?
Why is the hot process of lime-soda softening more common than the cold process?
What is the main principle behind zeolite softeners?
What is the main principle behind zeolite softeners?
What is a significant advantage of zeolite softeners compared to lime-soda softeners?
What is a significant advantage of zeolite softeners compared to lime-soda softeners?
What determines the capacity of a zeolite softener?
What determines the capacity of a zeolite softener?
What is the purpose of backwashing in the zeolite softener?
What is the purpose of backwashing in the zeolite softener?
What occurs during the brining step of the zeolite softener regeneration?
What occurs during the brining step of the zeolite softener regeneration?
What causes a reduction in the capacity of a zeolite softener?
What causes a reduction in the capacity of a zeolite softener?
What is the purpose of the slow rinse step during zeolite softener regeneration?
What is the purpose of the slow rinse step during zeolite softener regeneration?
What can cause incomplete softening of water in a zeolite softener?
What can cause incomplete softening of water in a zeolite softener?
Why should contaminants in the supply water be removed before entering the zeolite softener?
Why should contaminants in the supply water be removed before entering the zeolite softener?
What is the purpose of the cation exchanger in the demineralizer unit?
What is the purpose of the cation exchanger in the demineralizer unit?
What is the effluent of the anion exchanger in the demineralizer unit?
What is the effluent of the anion exchanger in the demineralizer unit?
Which method can effectively remove up to 99% of dissolved solids, organic matter, and colloidal matter?
Which method can effectively remove up to 99% of dissolved solids, organic matter, and colloidal matter?
What is the total dissolved solids content of sea water (approximately)?
What is the total dissolved solids content of sea water (approximately)?
How is regular osmosis different from reverse osmosis?
How is regular osmosis different from reverse osmosis?
How are exhausted ion exchangers regenerated?
How are exhausted ion exchangers regenerated?
What is the conductivity reading of water after treatment by demineralizers?
What is the conductivity reading of water after treatment by demineralizers?
