Skip to content. | Skip to navigation

You are here: Home / Process Engineering / Process Engineering / Environmental Engineering / SEWAGE TREATMENT PILOT BY NITRIFICATION - DENITRIFICATION - DEPHOSPHATISATION CP143


This pilot enables study of the processes used in an activated sludge sewage treatment plant.


Teaching objectives

- To understand the degradation phenomena of organic and chemical pollutants by the action of the micro-organisms in an aerobic environment followed by a physico-chemical treatment.
- Operation of a treatment plant according to sampling and daily analyses.
- Characterization of the nitrification - denitrification - dephosphatisation stages.


Technical specifications

- an anoxia tank with stirrer
- a ventilation tank with measurement of pH, temperature and dissolved oxygen,
- a clarification conical tank device with recuperation of the sludge
- a compressor controlled by oxygen rate measurement.
- a resistance (heater) dependant of temperature measurement,
- a dosing pump for basic solution controlled by pH measurement.
- a substrate supply pump.
- a sludge recycling pump.
- a recycling pump for the main solution
- an air flowmeter
- a liquid flowmeter for the substrat
- a laminate decanter, with adjustable plates, made of three compartments that fill themselves by overflow from the clarification device :

- a tank for the coagulation - stirred flocculation,
- a tank for the enlargement of the flakes,
- a tank for the decantation by overflow for the treated water

- a tank for the preparation of flocculation agent and coagulant (the reagents) mounted on the magnetic stirrer
- a pump for the reactants dosing
- a control panel with instrumentation and controls
- The unit is mounted on a stainless steel frame.



2 200 x 700 x 2 000 mm.


Essential requirements

Power supply : 220 V / single phase / 50 Hz