PHOSPHORUS REMOVAL IN SOLIDS FILTER HSAF ^®

The F.L.I. Brightwater HSAF^® solids filtration variant combined with chemical dosing can form a very efficient final stage P-removal process.

Municipal wastewater typically contains 5 to 20 mg/l of inorganic and organic Phosphorus compounds. These can be reduced to 0.5-1.0mg/l by dosing Calcium, Ferrous or Aluminium salts at a ratio of 1.5-2.5 mole/mole followed by removal of precipitated solids using HSAF.

Ferrous salts, upon combination with Phosphates, release Hydrogen Ions and so may need pH adjustment if the natural alkalinity is insufficient.

The use of plastic media of HSAF^® gives significant cost and space benefits together with a simple plc controlled operational mode. The media based process reduces the size of tanks required whilst greatly enhancing removal efficiency producing an optimal low cost option.

For the high effluent quality required under AMP5 this advanced plastic media based process option can be applied at any scale and offers a reliable and cost effective solution for P removal.

For more details about the HSAF^® family and its biological treatment capabilities, please click on the page links above or below. For information about the HSAF^® Solids Filtration variant, please click on this link. HSAF^® Solids Filtration.