ADC has invested in and utilised the latest de-watering technology (from Denmark) to solve a 250m dyke clearance problem, saving the client time, money and massively reducing landfill.
ADC were contacted by Ian Watts the technical engineer/team leader for Black Sluice Internal Drainage Board (BSIDB) to de-sludge a 250m meter section of Fenland Dyke on the outskirts of Boston in Lincolnshire. BSIDB is responsible for 34 pumping stations and the maintenance of 500 miles of watercourses within the area.
The 250m section had limited access and was unable to be cleaned by conventional means. Also the scale and cost of the operation to remove the wet sludge with many jet vac journeys to specifically designated landfill sites was too big.
ADC’s experienced management carried out an extensive survey and put together a project plan
With limited access the dyke section could not be cleaned by conventional means so both ends of the Dyke section were dammed and the water over pumped to reveal the sludge and debris below.
Two conventional jet-vacs were used to remove the wet sludge and a team of men were placed in the dyke to work the suction hose.
Once a jet-vac was filled, the sludge was transferred via the Moos polymer make up and dosing unit which causes the separation between the solid and water fractions on-route to the Moos roll-on-off AVC de-watering container where the de-watered solids form a dry cake.
The water fraction or permeate is then allowed to return to the water course behind the gang working the wet sludge to the jet vacs.
Once the de-watering process has finished the cake is then transported for disposal and the process is repeated.
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