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water conditioning (Read 260 times)

hover

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water conditioning
May 25^th, 2012, 8:46pm

hello everyone! i am having my ojt in a sugar mill.. i am requested to make a proposal regarding the water conditioning for steam boiler feed water. their current water conditioning processes involves clarification, filtration, ion-exchange and deaeration.. i was ask of other methods to improve the quality of feed water. reverse osmosis is out of question since its expensive.. what else could i add or improve in their water conditiong? tnx

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WasteH2ODave

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Re: water conditioning
Reply #1 - May 25^th, 2012, 9:36pm

Are they adding any boiler treatment chemicals to their feed water such as sodium sulfite, amine, and anti-scale?

Reverse Osmosis is the best choice for boiler fw treatment. What are they using for filtration? Microfiltration, ultrafiltration etc?

How many lbs/hr of steam are they producing and at what pressure? That factors into how much dissolved solids they can have in their feedwater.

Regards,

Dave

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grrun God Member Offline WaterandWastewa ter.Com is the best! Posts: 3525 Pekin, IL Gender: Company or Organization: Freelance Environmental Engine	Re: water conditioning Reply #2 - May 25^th, 2012, 11:06pm You should consult a boiler water chemical treatment supplier such as Nalco. Boiler water treatment involves chemicals for anti-scaling, anti-corrosion (both steam and condensate), oxygen scavengers, etc. As hover has stated, the composition of these chemicals will vary with the boiler characteristics. grrun
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sherry250798

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Re: water conditioning
Reply #3 - May 27^th, 2012, 5:44am

You may want to give some more information like :

1) Boiler Capacity & pressure & type ( water tube ?? or bidrum )
2) Source of water ( Surface water - river/borewell???) and analysis of raw water incld imp parameters like SS, TDS - its break up, silica ( colloidal & reactive both).
3) Water treatment plant scheme.
4) % Feed from WTP and % from condensate.
5) Are you using vapor condensate as well ?

Only on above inputs can one decide upon upgrdation/better running of operations, if any.

Regards.

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