Ground grouting works were required prior to demolition in order to stabilise the ground. This process is notorious for using a considerable volume of water (approx. 5–10 m3 per day).
Once used this water becomes contaminated due to its interaction with the highly alkaline Cementitious solution. It was anticipated this material was to be tankered off site as Hazardous waste and undergo and intense treatment process at a Water Treatment Works.
The site team took the decision to collect this contaminated water on site and use adequate treatment facilities to remove solids and lower the pH of the water.
Once treated this water was pumped into a storage tank and then this was re-used back within the process. This negated the requirement to have this water collected and treated off-site as hazardous waste.
Entry submitted by GRAHAM Construction
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