Calcium Hypochlorite Scaling

What can I do about the scaling caused by using Calcium Hypochlorite -Ca(OCl)2 - for water treatment applications.

Kind regards,
Ruaan

Taxonomy

• Water
• Treatment
• Treatment Plants
• Scale & Corrosion
• Inspection technology
• Chemistry
• Corrosion Prevention
• Scale Inhibitors
• water treatment
• Water & Wastewater Treatment
• Water & Wastewater

13 Answers

1. You could try a descaler that my company manufactures. It is non-toxic and bio-degradable.

   Email me at andrew@waterandoilsolutions.com.au if you are interested.

2. The simplest answer is to just adjust your pH lower. Add an HCl feed just before you add the CaCO3 and your scaling problem will disappear. 

3. one can use sodium hypochloriide in place of calcium.

4. Dear Mr. Ruaan, 

   Good day , 

   Regarding to your question could you please where are you utilizing a calcium hypochlorite  -

   you need to check from LSI value and you need to keep this value between -0.03 to 0.03 in case the value of LSI above 0.03 and more than 2  the scale are going to form you need to adjust the value of pH or you need to prepare a sodium hypochlorite from a calcium hypochlorite by adding a sodium bicarbonate and sodium hydroxide in previous mixer 

    

   please note Mr. Ruaan there is a lot's of solution but first we need to know more details about your problem for that if you are interesting please send for me more details on my email

   hasan@ga-water.com   

    

   Thank you and best regards

   Hasan  

5. Formulatemore specificproblem-thatmeansscalingthatyou want tofixor get,and whatyou do not likecalcium????

6. I suggest;

   (1). Consider the pre-treatment of  Calcium Hypochlorite. As a powder, dissolving it in water and getting the filtrate with no traces of the lime powder in it. Then use it and an appropriate pH adjuster to maintain the pH close to 7.

   (2). Or use Sodium Hypochlorite and an appropriate pH adjuster to maintain the pH close to 7 to treat your water.

7. Research a product called SeaQuest.    http://www.aquasmartinc.com

   Has worked well for us using Sodium Hypo but all applications are different.

8. The HydroFlow Electronic Water Conditioner has proven to help with this problem in the Salt Water Chlorine Generation systems in Commercial Swimming Pool applications and will definitely combat your problem in an Energy Efficient, Environmentally responsible manner.  Refer to Hydropath Head Office UK as per Adrian below!!!

9. Rather try using sodium hypochlorite in future. NCP can produce it at a concentration of 30% or more. Make sure you dilute it on delivery because the higher the concentration the quicker it degrades. Although it has a high pH the sodium is more soluble and prevents the scaling.

   1 Comment

   1. Agree with Chris. Sodium hypochlorite is very soluble and when it leaves a deposit (drying of surfaces) it can be wiped off with water. 

10. Dear ruaan,

    Sodium hypo chloride has a  higher pH of around 8-11and water typically has a pH of 7.5-8.Calcium hypochlorite is an inorganic compound with formula Ca(ClO)2. As a mixture with lime and calcium chloride, it is marketed as chlorine powder or bleach powder for water treatment and as a bleaching agent has the potential to occur when hypochlorite is injected into a dilution stream, which is subsequently piped to the point(s) of applicationyou should be able to remove the deposits, from limited areas, with an acidic solution.For removing this hard scale use acidic water.Try equal parts of muriatic acid and water: add the acid to the water and wear eye protection and rubber gloves. If the entire is scaled over, you probably will have to drop the pH to approximately 6 and keep it there for a while. Use the brush to help loosen the deposits. In addition, you should deal with the underlying causes. Make sure that the pH is not above 7.6 and is closer to 7.2.

11. Contact Hydropath Technology UK or email Denzil@hydropath.com

12. Do  you  know  about  RO&UF  , EDI  or   Ion Exchang Resin  or  dosing ? 
     

13. TRY CaCO3 from bivalves & crustaceans shells as filters. 

    Hypochlorite will be combinated with Calcium & give purity. RAY