prechlorination


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prechlorination

[¦prē‚klȯr·ə′nā·shən]
(civil engineering)
Chlorination of water before filtration.
References in periodicals archive ?
It is interesting that after a state agency reviews all material, they typically provide feedback that prechlorination may be a safer and more stringent process than post chlorination, and if prechlorination is not used on a pipebursting project, temporary services need to be set up.
Because the samples of treated water were drawn directly following filtration, the reduction of organic material and microbiological components was incomplete, despite partial prechlorination.
Second, the FDEP considers pipe prechlorination to be consistent with Section 4.
Nevertheless, the raw water cannot be regarded as pathogen free, as typically 45% of 100-mL prechlorination samples from the Silvan reservoir and 23% of samples from the Cardinia reservoir contain fecal coliform organisms.