Ammonia Removal From Water By Chlorine

Removing chloramine and ammonia from aquarium water chloramine which more than 30 of us cities now use as a disinfectant is more difficult to remove from water than free chlorine.

Ammonia removal from water by chlorine. Chlorination can be used to remove dissolved ammonia and ammonium ion from wastewater by the chemical reactions ammonia is converted stoichiometrically to monochloramine nh2cl at a 1 to 1 molar ratio or a 5 to 1 ratio by weight of cl2 to nh3 n. Students will learn about the chemical reaction between chlorine and ammonia which results in the creation of chloramine and will learn about chloramine. Most water companies have changed from chlorine to chloramine since chloramine is a bit stable and doesn t evaporate like chlorine although it s a weaker disinfectant. Chlorination of nh 3 led to nh 2 cl formation in the first step.

In order to remove the chlorine the chloramine must be deconstructed into its basic parts chlorine and ammonia with each part being treated to remove them. The combined application of uv irradiation at 254 nm and chlorination uv chlorine process was investigated for ammonia removal in water treatment. How to remove chloramines from water chloramine is formed when water companies add a mixture of 20 ammonia and chlorine to a water supply. It can be removed with exactly the same treatment strategies that are used for chlorine but greater contact time is needed.

Nhcl2 dichloramine and ncl3 nitrogen trichloride or table 6 1.