Seattle Cement Manufacturer

Project Information

19.4-acre manufacturer of construction materials located on the Duwamish Waterway in Seattle, Washington.

2+ Million gallons of stormwater storage.

Electrocoagulation system installed in 2010 which was found to contribute to the effluent copper concentration.

Bench-scale treatability testing performed in 2019 showed that particulate and adsorptive filter media would meet all permit benchmarks.

EC treatment taken off-line.

Replace multimedia in filter with high performance media &  add adsorptive mixed media polishing in 2020 as a corrective action.

Effluent has met all benchmarks since installation.

Project Details

  • Project Name: Seattle Cement Manufacturer
  • Location: Seattle, WA
  • Technology:  Retrofit Existing System – High Performance Sand Filtration and Adsorptive Multi-Media Polishing
  • Flow Rate: 150 GPM
  • Constituents:  Turbidity, pH, TSS, total copper, total lead, total zinc
  • Operational:  May 2020 – present
  • Gallons Treated to Date: 7,194,170 gallons treated

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