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List of Waste water/sewerage treatment, sew./waste pipes Projects in NT


ALCAN GOVE BAUXITE OPERATIONS - REFINERY EXPANSION - INFRASTRUCTURE
Mining - Civil Services (Waste water/sewerage treatment, sew./waste pipes) New project at Gove Peninsula, North West Arnhem Land via, Nhulunbuy, NT 0880. This type is Infrastructure with Private ownership. Refinery expansion will increase production from a current 2 Mt/y to 3.8Mt/y in 2007. All new process areas will be concrete bunded with sumps installed. Stormwater drainage and utilities will be extended to all new areas and facilities. The existing sewerage treatment facility will be upgraded by the addition of seperate reticulation and package sewerage plants. Proposed expansion includes stockpiling and handling. Bauxite will not be exported from Gove anymore but will be directed to the refinery. Stockpile sizes will remain the same, but stacker and feed conveyor systems will be upgraded or replaced and the refinery reclaimer will also be replaced. Three new grinding mills will be installed to replace the old rod and ball mills. One new mill slurry tank and pump transfer system together with one train of indirect mill slurry equipment will be installed. The heated feed will now be processed in a new high temperature double digestion process. A third low temperature digestion plant will be installed, as well as deep-cone thickners and high pressure pumps. The mud and liquor residue will be seperated in pressure decanters and processed through a train of new high rate washers and a single train of five deep cone thickners. The existing washers and thickners will be used for storage of residue liquids. Some will be demolished. Six new vertical pressure filters will be installed in a new security filtation area to process most of the turbid liquor flow from the thickners. Agglomeration precipitators and growth precipitators will be added to increase capacity as well as two interstage cooling facilities will be installed on each growth precipitator train. Flash vessels and a barometric condenser will be installed using cooling water from new cooling towers. A new hydrocyclone classification system with three classification stages allowing three different sized hydrate streams to be produced will be installed. A new filtration area and equipment will be installed to conduct filtration of various hydrate streams. Equipment will include six drum filters, vacum pumps and air blowers. Three new stationary calciners will be installed in conjunction with new hydrate conveyors and upgraded aluminia transfer systems. A new evaporation plant will be installed as well as cooling towers for vapour removal in the last three flash stages. Lime plant capacity will be increased from 140 t/h to 200 t/h by installing a new burner system and modifying the kiln's internal geometry. A new burnt lime storage silo will be installed. The existing power station will be converted from fuel oil to gas that will involve a new boiler and associated turbine units. The neutralisation plant will include a mixing tank and two thickners in a bunded area. New liquor purification plant will be constructed involving two seperate plants for the mixing and drying stage. Click for more details...

RANGER URANIUM MINE - WATER TREATMENT PLANT
Private ownership Mining - Civil Services (Waste water/sewerage treatment, sew./waste pipes) project In The Darwin City Council Area for New development. The plant will treat pond and process water used at the mine by removing impurities and leading to a reduction of water retained on site. The water then will be discharged into constructed wetlands and ponds on the minesite. Click for more details...

MOUNT PORTER GOLD PROJECT - SEPTIC SYSTEM INSTALLATION
A project in the NT Within Victoria Daly Shire. For the installation of a septic system. Click for more details...

MCARTHUR RIVER BASE METALS OPERATIONS PHASE 3 EXPANSION
Operating Mine - Expn - Phase 3 project at 60km southwest of, Borroloola, NT 0854 in the Mining - Civil Services (Waste water/sewerage treatment, sew./waste pipes). A project to extend the existing pit to the east to cover 210ha (1750m x 1500m). Mining to 420m deep should increase mineable reserves from 54 million tonnes (Mt) to 115Mt. Expansion of the current fleet of rope shovels, hydraulic excavators & large haul trucks to increase the mining capacity from 2.5Mtpa to 5.5 Mtpa. Upgrade of the processing plant (expanded crushing facilities, additional grinding mills, flotation cells & thickeners) to produce up to 800,000tpa of bulk zinc/lead concentrate containing 368,000t zinc. New overburden emplacement facilities (OEF) to the east & south of the expanded pit as well as expansion of the existing North OEF from 375ha to 860ha & a height increase from 55m to 80m. Installation of a new water management dam with a low permeability liner & drainage to allow it to eventually be converted to Cell 4 of the tailings storage facility. Increase using the existing pipeline of gas fired power generation from 20MW to 45-40MW. Expansion of the permanent accommodation village by 30 then later 80 rooms. Construction of a 300 room temporary workers camp serviced by a packet sewerage treatment plant. Workforce to peak during construction at 930 & operationally at 735 permanent staff & contractors. Click for more details...

RANGER URANIUM OPERATIONS - BRINE CONCENTRATORS
Mining - Civil Services (Waste water/sewerage treatment, sew./waste pipes) New project at Arnhem Hwy 11km east of, Jabiru, NT 0866. This type is Brine Concentrators with Private ownership. Installation of brine concentrators with a capacity to treat up to 1.8 gigalitres a year to produce clean distillate able to be returned to a wetlands for filtering. Installation of 3 units in a row with the first two processing water from the tailings storage facility & the third one returning brine to that facility. Click for more details...

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