Case Studies

Leaders in waste management

Continual investment in people and equipment ensure Harpers can successfully and safely complete high risk projects on time and to budget

Anaerobic Digester Cleaning

The Problem The mixers in a customer’s Anaerobic Digester had stopped working due to the volume of solids that had built up in the tank and also the customer needed to repair several small holes in the tank. To repair … ...

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Drain Cleaning/ Flood protection

The Problem The highway drains were overflowing during periods of significant rainfall, causing localised flooding and the public footpaths and verges that the highway drains ran underneath were due to be replaced. The Solution A length of 3000m of mainly … ...

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Wet Well Maintenance

The Problem The pumps in a large 25m wide and 21m deep inlet pumping station at a wastewater treatment works were frequently blocking due to the volume of silt and  screenings in the wet well. The Solution The thick layer of sludge, … ...

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Removal and disposal of bulk effluent water

An International Utility’s energy effluent treatment plant was equipped to reduce the cadmium levels in processed water to safe levels which allowed discharge directly to British Waterways system. Due to a failure within the plant, this became impossible and an immediate response from Harpers was required to avoid a major...

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Dewatering of 3 Gas Holders

Overview Harpers Environmental ltd Contracted by a major construction And demolition company to carry out the role of dewatering and desludging subcontractor on the demolition works at a former gas holder station. Harpers Environmental scope of works The subcontract package … ...

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Drilling Rig

Overview Removal of approximately 90 tonnes of sludge from a draining tank using vacuum transfer technology whilst the rig was moored in a local shipyard. Harpers Environmental scope of works Provide manpower and equipment for the removal and disposal of … ...

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Bitumen Storage tank cleaned with Combination Jetting Unit

Overview A large bitumen producer asked Harpers Environmental Ltd to provide a safe solution to a tough cleaning problem in one of their large storage tanks. They asked Harpers to define and implement a compliant method for removing an accumulated … ...

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UHP Water Jetting

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Bulk Tankering

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Waste Disposal

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