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Waste Water Detention Basin Clean
Our client’s basin clean involved removing sludge from the inlet pipe and around the outlet pumps, and designing a custom squeegee/pusher plate to move sludge without damaging the clay base. Despite weather challenges, the project was completed on time and under budget, ensuring the basins were fully cleaned and recycled water quality was maintained without cross-contamination.
Project Highlights
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We were able to deliver a 100% clean within a limited time frame and under budget.
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Manual Handling risks were eliminated by the use of mechanical means whereas in the past the cleaning works were done using hand held squeegees and a crew of up to 12 members.
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Our Project Management Team executed the entirety of the works including the engagement and co-ordination of sub-contractors on site.
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By being able to completely de-sludge the basins it has ensured that the recycled water quality is of the highest standard with no risk of cross-contamination by left over sludge
Services Provided
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De-sludge the HORS Detention Basins at the client’s site within a 3-week shut-down period.
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Detention Basins equate to 100m long by 90m wide.
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Remove all sludge and silt from the 1200mm diameter inlet pipe and around the outlet pumps.
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Design and fabricate a squeegee/pusher plate that has the ability to move the sludge to the vacuum trucks without damaging the clay base of the basin.
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Co-ordinate Traffic Management and Waste Disposal in conjunction with other shut-down works occurring in the vicinity.
Services Provided
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Assessment of the condition of the deteriorated carpark and surrounding areas.
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Collaboration with our client to develop a Request for Quotation (RFQ) for the rectification works, providing expert advice and recommendations on the best approach to address the issues within budget and time constraints.
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Implementation of safety measures by cordoning off the affected areas to prevent public access during the works.
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Carrying out the necessary resurfacing and repairs to the carpark and other high-traffic areas, ensuring a safe and functional environment for the public until the larger capital project is completed.
Challenges
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HORS Detention Basins had not been cleaned / de-sludged for 3 years and had never been cleaned entirely to the concrete base
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Large volumes of sludge to be removed and disposed of in a limited time frame
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Designing and constructing a tool that was not only sturdy and robust to push the sludge, but delicate enough to not damage the clay base
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Mechanical de-sludging had not been attempted previously due to the concern of damage to the basin
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Works were completed during winter meaning the weather condition were challenging
Outcome
We were able to surpass customer expectations by de-sludging both of the basins within the allotted time frame without damaging the clay base. This had never been achieved before by other contractors who were only able to bulk move 75-80% of product in the shutdown period.