Aerobic Sludge Sewage Treatment With Anoxia Nitrification – Denitrification

Aerobic Sludge Sewage Treatment With Anoxia Nitrification – Denitrification

• It operates by adding to the sewage a bacterial sludge in presence of oxygen followed by a phase of sludge separation. The oxidation stage is preceded by an anoxia stage, which allows characterisation and differentiation of the stages of denitrification and nitrification.

Teaching objectives

• Aerobic treatment by activated sludge.
• Continuous purification of an urban type pollution.
• Bacterial reaction in aerated solution.
• Residence-time calculation of the sewage in the reactor.
• Determination of the oxygen consumption.
• Determination of the reactor efficiency in COD, NTK and phosphate.

Technical Specifications of Aerobic Sludge Sewage Treatment With Anoxia Nitrification – Denitrification

• A torage tank on wheels
• Anoxia tank
• An aeration tank
• A storage tank of the base or the acid
• A clarification tank
• A decanter tank
• A sludge recycling pump
• A recycling pump for the main solution
• A substrate supply pump
• Peristaltic pump with fix speed for the dosing of acid / base
• A compressor controlling the oxygen rate
• A gas and a water flowmeters
• A dosing pump for base solution controlled by PH rate measurement
• Probes for 0², pH, temp.
• Two stirrers (anoxia and aeration tanks)
• Control panel the start/stop controls for the pumps. Two sequencing units are supplied to plan the working cycles of these elements. The panel includes the oxygen, pH and temperature probe transmitters
• The unit is made from PVC and Plexiglass on a stainless steel frame with aluminium nuts.

Dimensions

• 2 400 x 700 x 2 000 mm.

Essential requirements

• Power supply : 220 V / single phase / 50 Hz
• Solutions to use : Activated sludge or enzymes - Characterized substrate.