AEROBIC WATER PURIFICATION PILOT PLANT.

INTRODUCTION

The activated sludge pilot plant consists of an oxidation reactor
and of a settler according to the traditional diagram of singlestage sewage treatment process.
Biomass is oxidized in a reactor with agitator by the air blown by a compressor. The processed liquid is sent to the settler through an overfl ow. The sludges settling at settler bottom are recycled by a recycle pump into the oxidation tank.
TRAINING PROGRAM:
The process unit enables to develop and analyze the following
issues:
• Purifi cation effi ciency versus the following parameters:
- composition of water under to be treated
- residence time
- organic load
- pH in oxidation tank
- concentration of dissolved oxygen
TECHNICAL CHARACTERISTICS:
• Framework of AISI 304 stainless steel with castors
• Feed tank with capacity of 300 l
• Cylindrical oxidation reactor of AISI 304 stainless steel, with capacity of 60 l, including an inspection window of transparent methacrylate and three overfl ows at different heights to vary reactor volume
• Agitator of AISI 304 stainless steel with geared motor
• Settler of AISI 304 stainless steel, with capacity of 30 l, provided with inspection window of transparent methacrylate
• 2 magnetic drive gear pumps (for feeding and recirculation), with body of AISI 316 stainless steel, fl ow-rate 0 to 60 l/h
• Air compressor with body of stainless steel, fl ow rate
of 1.5 Nm³/h
• Air diffuser of AISI 316 sintered stainless steel
• 2 magnetic-induction fl owmeters (for feeding and
recirculation) with range of 0 to 60 l/h and 4 to 20 mA output
signal
• Flowmeter for measuring air fl ow rate to oxidation reactor,
with micro-valve; range of 0 to 180 Nl/h
• Thermoresistance Pt 100 with board-type digital temperature
indicator
• Microprocessor-type electronic dissolved oxygen indicatortransmitter,
with range of 0 to 10 ppm
• Microprocessor-type electronic pH indicator-transmitter,
with range of 0 to 14 pH
• Digital indicator of feed fl ow rate
• Digital indicator of sludge recycle fl ow rate
• Connecting lines and valves of AISI 304 and 316 stainless
steel
• Switchboard IP55, complying with EC conformity mark,
including plant synoptic and ELCB
Power supply: 230 Vac 50 Hz single-phase - 1 kVA
(Other voltage and frequency under request)
Dimensions: 1550 x 670 x 1870 mm
Weight: 250 kg

Supplied
THEORETICAL – PRACTICAL –
EXPERIMENTAL HANDBOOK