Bromine is a good biocide ...
Published by Ashwini K Sinha, Corrosion & Water Management Consultants - Principal Consultant
Bromine is a good biocide especially at high pH but not accepted by WHO for drinking water. Chlorine is very good disinfectant but looses efficiency above 8 pH. UV is used in many domestic water fiters or ozone. Chlorine dioxide can be good alternative for larger systems
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Chlorine dioxide is not stable and is rapidly decomposed by light. It also produces harmful byproducts, chlorate and chlorite. The UK limit is 0.5ppm for the sum total of chlorine dioxide, chlorite and chlorate but this limit is often exceeded as there is no simple test to evaluate the level. It is no use sending samples to a sophisticated laboratory as by the time the sample got there, it would no longer be representative
Published by Phillip Walker