Bioremediation of sullage material – West Belconnen landfill

Overview

The works involve the removal of approximately 1800m3 of sullage material contained in one of the sludge ponds and bioremediation (onsite) over a two and a half year period. The sullage material includes a mixture grease trap waste, oily liquid and fatty wastes. The works also include capping of the sludge and dewatering pond areas subsequent to removal of the sullage waste and capping of the windrow area following completion of the bioremediation.

Summary

• Establishment of groundwater wells and a monitoring program.
• Removal of the sullage waste from pond 5, mixing with green waste and formation of windrows.
• Installation of a clay cap, topsoil and dryland grass over the empty pond areas.
• Regular monitoring and turning of the windrows.
• Completion of bioremediation and re-use of material onsite.
• Installation of a clay cap, topsoil and dryland grass over the windrow area.

Remediation and Rehabilitation of Wirlinga Liquid Waste Facility

Overview

Remediation and rehabilitation of Wirlinga Liquid Waste Facility, Albury NSW. The works involved the extraction, pre-treatment and off-site disposal of TPH impacted waste water, excavation and treatment of approx 7000m3 of sludge and sediments resulting from the former liquid waste facility.

Sludge and sediments were bioremediated on site over a 6 month period to concentrations that allowed off-site disposal to the local landfill.

Summary

• Pre treatment of liquid waste prior to off-site disposal
• Excavation and bioremediation of sludge’s and sediments
• Nutrient and green waste addition and mixing utilising a soil recycler (Retera)
• Transport and stockpiling into windrows
• Off-site disposal

Remediation of State Coronial Services Centre

Overview

petroleum HYDROCARBON, lead, chlorinated hydrocarbon impacted soil Enviropacific are currently undertaking the remediation of the State Coronial Services Centre for the Department of Justice in inner Melbourne.  The volatile and odorous nature of the contaminants, combined with the close proximity of sensitive receptors has required the construction of an Odour Control Structure to encompass the excavations.  An air extraction and treatment system ensures no adverse impact to the ambient air quality.  Excavations are being completed to below groundwater levels and a water treatment plant has been established to treat leachate prior to disposal under a Trade Waste Agreement with South East Water.

Summary

• Highly odorous and volatile contaminants
• Establishment of Odour Control Structure & Air extraction / treatment system
• Development & implementation of detailed management plans
• Stringent air monitoring programme
• Treatment of Category A soil to allow offsite disposal
• Classification and offsite disposal EPA licensed landfill