Chlorination and Dechlorination in Potable Water Treatment. Urgent!?

Question

Hi,

What are the methods in removing the chlorine residual in water? Issit activated carbon and heating? Or there are other method(s) in removing the chlorine content in water?

Is there any relevant website which is about the removal of chlorine in water?

Thanks.

Answer 1

Well for a start, simple aeration will reduce the chlorine level. Ask anyone who has indoor fish and they will know that standing water overnight will lower the level of chlorine from tap water but unfortunately companies are sometimes using chloramine instead of or as well as chlorine for disinfection. Both chlorine and chloramine are toxic to fish - very toxic. Yes, heating will also release chlorine from tap water and activated carbon will remove chlorine and chlorinated substances but if you want to chemically remove chorine then you can treat with sodium thiosulphate.

Answer 2

Well here is what you do. First of all raise the pH of the soution you have to around 9 or 10. then add a reducing agent. The most common one used in industry is called sodium metabisulfite. This will neutralize all of the chlorine. You dont have to stop there however. Then lower the pH to 2 using sulfuric acid. Then raise the pH with sodium hydroxide to precipitate out the salts.You will end up with a nice clear solution without the chlorine

Answer 3

Dissolved solids in rainwater are negligible, so do not complication with the RO device. it is not in basic terms pointless, RO platforms waste water. Sediment clear out would desire to be mandatory in the journey that your device collects an excellent sort of dirt between rains. in case you have a very clean sequence device, your concerns would be smell/style and available bacterial an infection. smell and style are a function of the supplies contained in the sequence device - get rid of leachable plastics and wood that maintains to be continuously moist. For the biologicals, UV is large sterilization, a sprint costly. Get a pattern of rainwater from the cistern examined to work out in case you have a project. it fairly is possibly which you do not and periodic finding out is all you will would desire to enable you recognize if the device ever desires scrubbing out. EDIT: an answer for stuff on the roof - run your collector right into a 50 gallon barrel with a glide swap close to the fabulous. The glide swap controls an electric powered valve (you're able to try this directly, in spite of the fact that it fairly is a sprint trickier to get suitable) that switches the water to the sequence cistern after the 1st 40 gallons or so have washed the roof. Drain the barrel in between rainfalls.

Answer 4

Sodium Bisulphite I believe. Activated carbon *will not* remove the chlorine effectively.

"Sodium Bisulfite:
Treatment of process water: Removal of excess chlorine, in special cases removal of oxygen" >>> http://www.inorganics.basf.com/p02/CAPortal/en_GB/portal/Bleichmittel/content/Produktgruppen/Bleichmittel/Produktinformationen/Natriumbisulfit-Loesungen

DECHLORINATION

To reduce effluent chlorine levels as required in the "Water Quality Standard and Policy for Chlorine in Surface Waters," the City of Martinsville uses a sodium bisulfite liquid feed system. Sodium bisulfite solution is a straw colored aqueous solution of sodium metabisulfite (H2SO3) that reduces excess residual chlorine. <<< http://www.ci.martinsville.va.us/Water/wwtp.htm

Also: http://www.wcponline.com/ArchiveNewsView.cfm?pkArticleID=1909

Hahahahaha! Keep the thumbs down coming!

Answer 5

Boiling and activated carbon are effective methods and even reverse osmosis may remove.