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David Solley


David Solley is a process engineer with more than twenty five years’ experience in water and wastewater treatment. He has led successful process and multi-disciplinary teams for many significant wastewater and reuse treatment projects, largely in Australia. The projects have covered nutrient removal for municipal and high strength wastewater, water recycling processes, and biosolids treatment throughout Australia. His various roles have included strategy development and planning, concept and detail design, process modelling, optimisation, operation, control, commissioning and trouble-shooting of wastewater treatment and water recycling processes. His experience also includes research leading to full-scale development and implementation of innovative technologies.

David’s experience extends widely to include novel mainstream treatment systems, biosolids processing, biogas production and energy recovery.  He has worked on projects ranging in size from small wastewater treatment plants to large systems (over 1 million person equivalents) that encompass energy reduction/recovery and water recycling, including the Western Corridor Scheme in South-East Queensland. He has extensive experience involving the optimisation of aeration systems for improved nutrient and energy reduction. David was instrumental in developing Brisbane’s regional biosolids treatment centre, incorporating thermal hydrolysis pretreatment prior to anaerobic digestion and retaining co-generation for energy recovery. His contribution to recent optimisation work at a large treatment plant in Queensland, has demonstrated significant net energy reduction and capacity improvements.

David’s experience includes 14 years as a design and operations engineer with the water utility Brisbane Water, which at the time owned and operated nine wastewater treatment plants.  The remainder of his experience has been with water and wastewater treatment engineering consultancies; the last 8 years with GHD in Brisbane. David is a chartered chemical engineer with Masters and Bachelor level engineering degrees. He won a Churchill Fellowship in 2000 to study overseas the upgrading of large wastewater treatment plants for biological nutrient removal.