comparison of washing soda
with reverse osmosis method
Answers
Explanation:
Sodium hydroxide (NaOH)(caustic soda) may be utilized for chemical precipitation. due to its advantages: produces less sludge than lime, or lime-soda ash processes. However its disadvantage are higher total chemical cost.
Lime, or lime and soda-ash is the preferred method of most facilities due to its low cost.
Therefore, your selection will be based on the money that you have. If cost is NOT an issue it is preferred that you use NaOH, if not you can use the lime or lime soda-ash.
Determination of type of hardness of raw water is a must prior to selection of softening method. In your case, Sodium hydroxide treatment seems more advantageous than lime or lime - soda treatment because it can be used for both carbonate and non-carbonate hardness, due to a high concentration of sulfate ions, also you almost need to make effective flocculation after that to rapid settle-down of formed precipitate.
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Answer:
this is disadvantage of you. many
osmosis method is good or bad
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