CSG/CBM water treatment is our main area of focus. Coal seam gas (CSG) or Coal Bed Methane (CBM) development presents a challenge. How do we conserve the environment while meeting energy demands? Water is the primary by-product of CSG production, as methane is extracted from underground by reducing ground water pressure. Often rich in salts and other constituents that make it unsuitable for immediate use, it has the potential to cause environmental harm if released to land or waters through inappropriate management. Without treatment, beneficial uses for CSG water are limited.

In line with changing EPA policy, CSG/CBM producers need to demonstrate their commitment to the pursuit of finding solutions to the problem. Evaporation ponds, which have been the primary means of disposal, are to be phased out. Proven water treatment processes are many and varied, however the problem remains - what to do with the brine concentrate (reject stream) left over from treatment? Not to mention the vast quantities of concentrated salt water in existing evaporation ponds.

"CSG water treatment is a fairly complex process, and not inexpensive. However, with the right knowledge, plant design and integration of the various processes, the expenses can be minimised considerably, the quality of usable water increased significantly, and the reject stream reduced to zero".

Derek Pallet, Technical Manager, Impulse Hydro

Download our CSG Brochure.
Download the Qld Gov't CSG Water Discussion Paper May 2009