Filter Rehabilitation at
Osage WTP
Amarillo’s Osage Water Treatment Plant (WTP) uses eight gravity filters to remove suspended material in the source water as part of the City’s process to produce safe clean drinking water. These filters use sand and anthracite above underdrains to process up to 52 MGD. The City had recurring problems with the underdrains plugging and/or delaminating from the filter bottom that made the filters unreliable. The dimensions of the basins made the application a significant challenge.
Pape-Dawson (as KSA) assisted the City by studying alternative underdrain designs for the filters. Based on the information presented in a preliminary engineering report, the City chose to proceed with a project to replace the existing underdrains with one of two options: stainless steel trapezoidal or plastic block underdrains. Our team designed a bid package with each alternative for the City to consider. The bid package also included replacement of the filter media as well as connections for air scour.
Based on evaluation of the submitted bids, the City chose to install stainless steel trapezoidal underdrains. We provided construction administration and resident project representative services.
Project Type
Project Sub-Type
Water Supply
Infrastructure
Design
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