MUNICIPAL WASTEWATER

Municipal treatments include using zeolite-anammox to remove Total Nitrogen (TN) - primarily in the form of NH4, NO3, and organic N. Typical applications include:

  • Ammonia sidestreams from anaerobic digesters (filtrate / centrate)

  • Secondary effluents and final effluents from WWTPs

  • Water re-use and water recycling

Technical summary

 
 

Pilot reactors

Hayward Marsh Pilot

  • 5,000gpd Pilot Plant

  • Mainstream effluent at 35mg/L NH4-N

  • Horizontal flow by gravity - no pumping

 

2012-2013

Oro Loma Pilot

  • Oro Loma Sanitary District – 14,000 gpd

  • Side-stream effluent at 500 mg/L NH4-N

  • Cost to treat full flow (0.15 MGD) estimated at $1.1 M

2013-2014

San Francisco Pilot

  • 90 L pilot plant

  • aerated reactor

  • 1,700 mg/L sidestream influent.

  • Effluent NH4 = 170 mg/L; effluent NO3 = 5 mg/L

  • 90% TN removal

Martinez Pilot

  • Flow is 35 MGD

  • 6,000 gpd pilot

  • 98% NH4 removal

  • Treating 25 mg/L NH4 Mainstream effluent

  • Aerated reactor

  • Water re-use

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