WATER MANAGEMENT
There are two 40’ refurbished reefer containers containing three stages of media filtration, plus ultraviolet units to treat source water contaminated with low traces of arsenic( one live SIMPOD and the second as a hot standby unit).
The potable water facility includes on-board manufacture of chlorine for disinfection and oxidation using chlorine generators manufacturing chlorine from common food grade salt to mitigate against health and safety issues related to the handling of liquid chlorine.
There is a 155,000 gallon steel bolted tank for treated potable water storage.
The SIMPOD sewage treatment solution involves a single 40’ container designed to screen primary sewage piped from 10 separate pumping stations throughout the camp. Two primary clarifier SIMPODs with revolutionary screw press dewatering technology remove suspended solids. Four trickling biofilters provide secondary treatment of clarified sewage product water.
There is a 70,000 gallon steel bolted sewage storage tank and a second 45,000 gallon steel bolted storage tank for process water from the screening and dewatering processes.
A single administration SIMPOD containing final ozone tertiary treatment for sewage water being returned to the environment, as well as the control console for a custom-built Delta V automation and control system, is connected to all SIMPODs via coaxial and fibre links. This system enables B2 Gold to monitor all system activity from one single console and as well enabling Simpson to monitor performance from its headquarters.
The refurbished reefer containers were selected for this project in order to provide protection against mould and insect infestation in that all internal walls, floors and ceilings are lined with aluminium or stainless steel. All SIMPODs are climate controlled with onboard ventilation and air conditioning systems used to maintain ambient temperatures in the sub 25 ° C range in a local climate region where external daytime temperatures can reach as high as 45 ° C.
The Simpson solution was shipped from the company’ s location in Burlington, Ontario in November 2015 and delivered to the Mali, West Africa Fekola mine site in late December. Installation coordination with ATCO Structures and Logistics and B2 Gold site personnel commenced in late December and was finalized in a staged commissioning and B2 Gold staff training exercise during the spring of 2016.
Subsequent to the commissioning of the above system, B2 Gold has extended its procurement program with Simpson Environmental with the purchase of additional water treatment systems to provide camp-wide softened water as well as elution treatment water for the mine plant under construction. This phase of Simpson’ s support to Fekola mine is scheduled for delivery, installation and commissioning in the first quarter of 2017.
Osmoflo has secured the contract to provide a custom built water treatment plant in Chile to Outotec. Outotec is expanding and modernising a copper smelter in Potrerillos, Chile. The expansion requires a water treatment plant to assist in treating cooling tower blowdown for water reuse in the facility. Osmoflo’ s extensive experience in the mining industry showcased the required capability to secure the project.
Osmoflo is providing a custom-engineered plant to support the expansion, using a combination of ultra filtration followed by twopass brackish water reverse osmosis designed for high salinity / high recovery. The water that was typically discharged as blowdown waste will now be recovered through the water treatment system and will be fed back into the circuit for reuse with some of the water being polished further for use in high purity applications.
As a part of Osmoflo’ s solution, the plant will also feature Plantconnect automation technology, allowing remote monitoring and control from Osmoflo’ s 24 hour Control Centre.
Being pre-packaged as discreet skids, the plant will be sea-freighted to Chile following preassembly and factory testing.
Although this is the first such project between Outotec and Osmoflo, the two companies have been in collaboration for some time, developing a range of water solutions, globally.“ This
We are better together
MWH is now part of Stantec. Together we offer expanded mining, tailings, water, and environmental services to the mining community.
Visit stantec. com / mining / MWH to learn more.