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— Frequently Asked Question (FAQ) Result —

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QUESTION:  
Are there recommended treatment methods to follow where ozonation can still be used for inactivation of Cryptosporidium parvum oocysts in source water containing bromide without exceeding the bromate disinfection byproduct standard for drinking water?
ANSWER:  
Yes, several pretreatment methods can remedy this situation, but some are quite expensive. Research has shown that a combination of chlorine and ammonia pretreatment can provide a low bromate concentration at relatively low chemical dosages and operation costs. The Southern Nevada Water Authority received a patent for the process titled "Water Treatment Using Ozone and Having Reduced Likelihood of Bromate Formation from Bromides Formed in the Water" in August of 2003. The patent was placed in the public domain so that it would be available for use free of charge by anyone.


   
 

 



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This website was developed by the ACES Water Quality Team, under the leadership of Dr. James E. Hairston. It is funded, in part, by USDA-CSREES water quality grant support under Section 406 of the Agricultural Research, Extension and Education Reform Act of 1998.