Process Description

After receiving biological treatment in the BiotecT plant, sewage effluent flows by gravity into the first of the PHORS Tank's two chambers. This first compartment serves as a holding chamber.

At pre-set intervals a controlled volume of effluent is pumped into the second chamber where a chemical is automatically added. The chemical becomes mixed with the transferred effluent and causes the phosphate to coagulate with the solid waste particles, ending up as sludge that must be periodically removed. The now highly clarified effluent is then allowed to discharge out of the PHORS Tank to the designated watercourse or disposal area.

System Requirements

A power supply is required at all times to ensure the controlled transfer of liquid through the internal pump and the required chemical dose.

The unit also features a control panel that allows both the chemical dose and transferred volume to be varied according to the expected daily volume and level of phosphate in the influent.

Chemical Treatment

The PHORS Tank system treats phosphate with an iron compound (liquid ferric chloride 40%).

The chemical will require storage in a separate unit in an appropriate location, sized to suit the daily dosing and supplier's container volume. Titan can supply a variety of secure kiosks to suit most applications, or alternatively the components can be fitted into a suitable existing facility.

Installation

The PHORS Tank is installed below ground, connected in series to the outlet of the main BiotecT treatment plant. The unit requires a minimum fall of 50mm to permit gravity flow and consideration should be made for desludging access.

The chemical storage kiosk and control panel should be located within 3 metres of the PHORS Tank's first manhole cover and will require it's own electrical supply.