The City of Bathurst, Australia Installs Microclor® On-Site Sodium Hypochlorite Generation System Case Study

Bathurst is the home of the Bathurst 1000 Race, the largest NASCAR-style “touring car” race in Australia. On race day, tens  of  thousands of  additional  visitors  tax the  capacity of the Bathurst 5 million-gallon-per-day wastewater treatment   plant.   The   diligence   and   capability   of   the treatment staff allows the plant to meet the challenge every year.

The Bathurst Regional Council uses treated effluent from the  Bathurst  Waste  Water  Treatment  Works  at  its  bio-solids plant   for  general  wash  down  and  as  non-potable  water throughout the plant. The water is drawn from the end of the treatment process before the final step of UV disinfection.The  Council  was  using  delivered  12%  liquid chlorine  (bulk sodium  hypochlorite)  to  provide  residual  disinfection  to  the re-used effluent. However, the risks in using the liquid bleach was identified, and although the risk was low, the health consequence to staff was high while using the reuse water in locations where a fine spray wasgenerated.“We use UV, but with no chlorine residual, disinfection could not be verified” said Nicholas  Lavoipierre,  Senior  Water  & Sewer Engineer at Bathurst Regional Council.