Bart Kraakman discusses Sydney Water’s approach to developing a Corrosion and Odor Management Tool to help address sewer corrosion and odor issues in Australia. Bart will present, along with other CH2M HILL experts, at WEF’s Odors and Air Pollutants 2014 conference, May 31-June 3.

By: Bart Kraakman, CH2M HILL’s Regional Technology Leader in Odor & Air Quality and principal technologist

Bart Kraakman will present his paper, “Sydney Water Corrosion and Odour Management Tool”, co-authored by Sydney Water’s Jose Gonzalez, Louisa Vorreiter, and Tung Nguyen and CH2M HILL’s Josef Cesca, at the Water Environment Federation’s Odors and Air Pollutants 2014 conference in Miami, FL on Monday, June 2 at 10:45 a.m. Get a complete list of CH2M HILL’s participation in the event.

Sewer corrosion and odor issues are wide spread in Australia, and the issues are only further complicated by the lack of tools and technologies available in the industry to mitigate sewer corrosion and improve the industry’s understanding of in-sewer processes which contribute to corrosion and odor management issues.

Sydney Water, the largest water utility in Australia, developed a tool to effectively manage corrosion and odor issues throughout its 26 wastewater collection systems which includes 24,000 km of wastewater pipes and 674 pumping stations. Recognizing a need to improve the life cycle of their assets and reduce rising maintenance costs as a result of corrosion, the utility shifted its approach to sewer management.

Tool can be used to map potential corrosion and odour issues

The tool—known as the Corrosion and Odour Management Tool—takes a holistic approach to sewer corrosion and odor management and utilizes technology to support cost-effective sewer maintenance and operations decisions. Before the tool was developed, corrodible infrastructure was placed on an inspection program giving a re-inspect and/or repair date. Odor complaints were handled locally, resulting in the application of either odor control or chemical dosing units—both costly solutions.  To better manage costs and accurately forecast future operation and maintenance costs, Sydney Water developed the tool, which is set up as a database that incorporates data on sulfide in sewers, (including mass transfer and ventilation), field data, and cost curves for control measure for corrosion and odor, to:

  • Establish the odor and corrosion risk profile of each wastewater collection system
  • Develop corrosion and odor strategies for each category of wastewater system
  • Develop individual plans for each wastewater collection system
  • Develop guidelines, standards, and costing tools for effective corrosion and odor management

Sydney Water applied the tool to each of its 26 sewer systems and identified the most cost effective control methods to effectively address and manage odor and corrosion in its pipes. For each system, an individual risk profile provided Sydney Water with the information needed to develop management strategies and implement appropriate measures to obtain the most cost effective outcome for the utility.

Bart Kraakman is CH2M HILL’s Regional Technology Leader in Odor & Air Quality and principal technologist. He has more than 20 years of experience, serving in various design and project management roles. Bart has been responsible for numerous municipal and industrial projects involving sustainability, waste gas and odor control, identification of emission causes, ventilation, corrosion control, as well as investigation, evaluation (cost, risk and life cycle), development, detail design, and commissioning. He is located in the firm’s Sydney, Australia office.