Hi Tamer, If the scale formed is in fact calcium carbonate, then destruction of alkalinity using acid would certainly be an option (we're currently working on a project where this is undertaken).  Understanding the implications of adding acid is also necessary though.   For example you also have to be careful that if you dose sulphuric acid it doesn't take you over the CaSO4 precipitation point too early in the process in locations where it would be inconvenient.  HCl may be an option but is much more expensive.  Modelling can help with this along with an ion balance composition from both streams.   Without knowing the process in detail, I can't say whether preparing the seed in that particular tank is going to create an issue for you. Cheers, Matt. matthew@​​saltwatersolutions​​​.​com.au  ​ www.​saltwatersolutions​.​com.au  ​ www.aqmb.net

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Hi Tamer,

If the scale formed is in fact calcium carbonate, then destruction of alkalinity using acid would certainly be an option (we're currently working on a project where this is undertaken).  Understanding the implications of adding acid is also necessary though.  

For example you also have to be careful that if you dose sulphuric acid it doesn't take you over the CaSO4 precipitation point too early in the process in locations where it would be inconvenient.  HCl may be an option but is much more expensive.  Modelling can help with this along with an ion balance composition from both streams.  

Without knowing the process in detail, I can't say whether preparing the seed in that particular tank is going to create an issue for you.

Cheers,

Matt.

matthew@​​saltwatersolutions​​​.​com.au  ​

www.​saltwatersolutions​.​com.au  ​

www.aqmb.net 

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