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Stricter regulation by OFWAT has encouraged water companies to optimize all stages of the water treatment process. This work reviews the ozonation process, in order to evaluate the benefits and disadvantages of continuous versus intermittent ozone operation. Two Advanced Water Treatment Works (AWTW) were surveyed, Farmoor AWTW, Which involves traditional (chemical) treatment processes, and Kempton Park AWTW, which incorporates slow sand filter sandwich™ beds. Both reviews indicated that continuous ozone operation would result in an optimized solution based on dependability of ozone plant, reliability of water quality and cost efficiency.
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Evans et al. (2003) studied this question.
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