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Wednesday, October 9 • 3:30pm - 4:00pm
Solids Management: Low Tech and High Tech Solutions

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Solids production at water treatment plants is influenced by many factors such as coagulant chemical dosing, raw water quality, plant production, recycle, and possible use of powdered activated carbon. Many plants are removing historically higher levels of TOC and turbidity in order to achieve regulatory compliance, to meet aesthetic objectives, or to optimize subsequent downstream processes. This has led to peak solids production quantities that exceed the original design criteria and tax plant dewatering facilities.

Selecting solids management tactics will always remain a fit-for-purpose activity. Internal factors such as staff preferences and expertise, siting, and solids composition must be considered along with external factors such as climate conditions and ultimate disposal options for project success. In some cases, conventional drying techniques such as lagoons and drying beds are being enhanced and supplemented with bags made of geofabric textiles for an old-but-new approach. Elsewhere, screw presses offer advantages with respect to reliability, uptime, and reduced labor needs and are competing directly with equipment such as centrifuges as a cost effective method for mechanical dewatering.

Operating experiences, energy and chemical (polymer) requirements, successful design arrangements, and overall performance of low tech and high-tech Solids management methods will be summarized for the benefit of utilities and design engineers, using examples from recent full-scale applications.


Katy Vandenberg

Project Manager, Stantec Consulting Services, Inc.
Katy Vandenberg is a mechanical engineer and project manager from Denver, CO. She holds a bachelors degree in mechanical engineering from Cornell University, and a masters degree in engineering systems management from Texas A&M University. She has spent her 14 year career in the water... Read More →

Wednesday October 9, 2019 3:30pm - 4:00pm MDT
Boiler Room