Phosphorus Recovery from digester effluent with HydroFLOW

Obtain high rates of phosphorus recovery from digestor effluent streams, by utilizing existing tankage and piping systems to precipitate soluble phosphorus as micron-sized struvite crystals that can be captured by existing dewatering systems.

Phosphorus Recovery

Obtain high rates of phosphorus recovery from digestor effluent streams, by utilizing existing tankage and piping systems to precipitate soluble phosphorus as micron-sized struvite crystals that can be captured by existing dewatering systems.

Relying on proven HydroFLOW technology for struvite scale control, the process is easily integrated into existing WWTP operations, without the need for extensive capital equipment, financial resources, or installation time.

Digestor effluent is dosed with a magnesium salt and pH adjusted to obtain the optimum conditions for struvite formation. Dosing is typically performed in sludge retention and/or piping systems, with sufficient hydraulic retention time (HRT) to precipitate the struvite as micron-sized crystals. Crystal growth is encouraged with seed crystals from the process. To prevent scale formation, the effluent is treated with the HydroFLOW electronic water conditioner, which induces the struvite to precipitate in suspension as opposed to as hard scale on piping and equipment surfaces. Acting as a filter aid, the sludge biosolids and struvite crystals are captured with existing dewatering equipment, increasing the value of the dewatered biosolids.

Low Capital Costs, High ROI

High Capture Rates Typically Exceeding 80%

Improved Cake Dryness from 1%-3%

Polymer Reduction of 20 ‐ 25%

Download the Process Flow Diagram

Our clients