Why Us ?
One Machine
Superior mobility & versatility
Replaces several single purpose machines
Reduces operational costs
Proven performance & service
Operating area; from dry ground to 6.5m depth
Heavy duty versatility
Watermaster is a fully tested and documented serial product.
For quality assurance each Watermaster is inspected and approved by an independent Maritime Authority.
Watermaster’s reliability is demonstrated through documents like:
> ISO 9001 Quality Certificate.
> ISO 14001 Environmental Certificate.
> CE certificate.
> Stability and trim calculations.
> Inclining test reports.
> Noise measurement reports.
> Vibration measurement reports.
> Cabin safety certificate (FOPS).
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Convenient & Versatile
Transport
Watermaster is transported as a complete unit so there are no set-up-times when arriving at the site.
Walks into water
Watermaster is amphibious and can walk independently in and out of water without crane assistance.
Cruise to site
Watermaster has it’s own propulsion system so it can get to the site independently without the help
of tugboats.
Work
Watermaster has four stabilizers enabling steady and accurate anchoring and operation.
Work depths
Watermaster is the shallow water specialist for all applications, from dry land to 6.5 meters.
> The maximum reach is 6.5 meters.
> The most efficient working depth is up to 5.5 meters.
> Watermaster uses the front and rear stabilizers to anchor itself to the bottom (from 4 points).
> Watermaster can operate in very shallow waters, wetlands or even on dry ground – in places that
are unreachable for other dredgers.
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Treating Problem Mine Water - TenCate GEOTUBE®
A highly reliable, all-in-one solution has been developed for reducing the impact industry has on the environment. This is used in conjunction with the Watermaster multi-purpose dredgers.
TenCate Geotube® technology provides cost-effective and efficient dewatering and containment in the mining and mineral processing industry. In mining and mineral processing (mine tailings, coal sludge, etc), TenCate Geotube® dewatering technology enables the recovery of valuable materials, provides structural stability, improves water quality, or reduces storage footprint by sometimes 50 to 80%. Conditioners or polymers are normally used to promote flocculation to improve dewatering rates, solids retention, filtrate quality and increase in solids consolidation within the tubes
Sludge containing metals is purified inside these units. Four layers of the containers are capable of being filled to 2.32 metres high each are installed at the site. The size of the processing area and the number of containers are carefully dimensioned to meet the capacity required, the composition of the sludge to be treated, and the mechanical stress that is imposed on structures.
SIMPLE, VERSATILE TenCate Geotube® DEWATERING TECHNOLOGY IS IDEAL FOR:
> Pond and Lagoon Maintenance (polishing ponds)
> Tailings Management
> Water Resource Management (water reclamation and reuse)
> Beneficial Reuse (dyke and berm construction)
> Precious Metals Recovery
> Emergency and Disaster Management (uninterrupted mining operations)
> Acid Mine Drainage (for active or inactive mines)
> Specialty Applications
> Geosynthetics
BENEFITS ARE;
> High treatment speed and large capacity
> Good cost efficiency
> Safe and reliable
> Works well regardless of sludge type
> Operates year round in all weather conditions
> Good purification results
> Excellent sludge treatment and drying performance
THE NEW TECHNIQUE IS ALSO SUITABLE FOR;
> Mines
> Oil Refineries
> Pulp and Paper Mills
> Municipal and Industrial Water Treatment Plants
> Tanning Units
> Environmental Projects
> Construction Projects
Geotube® is a registered trademark owned by TenCate Geosynthetics.
>> CASE STUDY TenCate Geotube® <<
Case: Coal Mine Return Water Dam De-silting.
Where: Mpumalanga Coal Mine
Product: Geotube CGT500D….27 No. Dewatering Tubes
Introduction
The mine lies near the City of Tshwane Metropolitan Municipality.
The owner was granted the mining rights by the Department of Mineral Resources in June 2008, and production began in 2009 with the initial supply of 4 653 tons to Eskom.
In March 2010, the mine signed an eight-year contract to supply 160 000 tons of coal per month to Eskom and in April, an additional 30 000 tons was negotiated.
In 2014, the Department of Minerals and Resources granted further mining rights.
Problem
Having been in operation for many years, as can be seen from the timeline above, the mine’s return water dam was losing capacity due to the build-up of coal duff silt from the process plant.
Without an alternative dam to pump the de-silted water to, the mine needed to find an answer to overcome the problem. They contacted Dredging Solutions, who specialise in these applications. Dredging Solutions assessed the situation and came up with a non-disruptive workable plan. They constructed a drainage platform, sited within a basin, close to the dam. The platform was designed to carry the load of 27 sludge dewatering geotubes, plus overspill water.
The platform was designed with drainage channels along the sides to conduct the overspill water to a sump, and from there back into the system. To ensure that no water was lost due to seepage the platform was lined with a sturdy 1.5mm thick HDPE welded geomembrane.
The geotubes were laid out on this platform, and the dredged silt from the return water dam was pumped into them, filling two geotubes at a time. As the Geotubes filled up with silt, the filtered water was expelled through the porous walls of the tubes, onto the lined platform and then on to the sump. This solution provides a closed-loop system, environmentally-friendly, and with very little water loss.
In the case of this particular silt, no flocculating agents were required. Once the geotubes were filled, and the silt dewatered, it could easily be disposed of as a solid.
Dredging Solutions provided an environmentally sound solution to a difficult situation. Had Dredging Solutions not been conversant with this type of technology, the mine would have required a substantial capital outlay to construct a new dam just for the purpose of de-silting the existing dam.
With Thanks
Christiaan van Wyk
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