Slide background AirPrex™: Process for Optimisation of Biosolids Treatment with the benefit of Phosphate Recovery

The Problem

Hydroflux CNP 8Struvite Causes Reduced Sludge Dewaterability and Wastewater Treatment Plant Capacity

In wastewater treatment plants with biological phosphate elimination, high phosphate concentrations occur in the digester’s anaerobic environment.

As a result, struvite (or MAP: magnesium ammonium phosphate) builds up inside the pipes, pumps and process equipment, causing problems including:

      • Reduced plant capacity due to decreased flow through the digester’s pipes
      • Reduced dewatering efficiency due to increased water bounding effects in the sludge by high phosphate levels
      • Increased phosphate loads in the return liquor, which leads to a less efficient phosphate-elimination process and causes crystallization problems in pipes and pumps

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