The Siltbuster pHD Unit is being used as a central station to treat all wash-water on the job, the pHD Unit allows sediment to settle in a designated, built in skip, before being over pumped for treatment in the adjacent skip on site.
As the Metrolink Site is a linear site, the Concrete Washout is collected on site, and then over pumped into an IBC before being transported to the central location where the pHD Unit is located, treated water is then reused to fill jet washes for cleaning plant and machinery.
The pHD Unit is different to other concrete washout treatment units as it uses CO2 in place of the more dangerous Mineral Acids to treat concrete washout. Using CO2 it is impossible to over-treat the high alkali concrete washout with the eventual pH levelling at around 5. Conventional Mineral Acid treatments must be carefully dosed to ensure overtreatment does not occur and creates and acid.
The pHD unit also prevents the wastage of CO2 as it is an automated unit that continually measures the pH level of the washout and turns off the CO2 when the pH level is neutral. As a combined all-in-one unit the siltbuster pHD unit can easily be moved around if required in the future.
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Entry submitted by MPT
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