Improve your aeration performance thanks to a single integrated control system

Automation of the aeration and of the return of activated sludge according to the biological demand
(possibility to add an advanced process control solution)

Up to 30% reduced electrical consumption of air blowers

• Creation of an automation system or implementation of advanced process control APC

Plant operation stability

• Improved food to micro organisms ratio control (variability reduction with APC)

Improved efficiency

• Reduced sampling and human errors, better instruments reliability and management

Modernisation of existing plants

• Possibility to audit existing plants and size the best optimisation project

 

Oxygen sensors of ORP instrument should be well placed in the anoxic-aeration tanks to send 4 - 20 mA signals to the PLC.

• The DO concentrations in the aeration tank should be in the range of 1.5 to 4 mg/L. The DO level in the anoxic phase should be zero or near zero, i.e. without oxygen.
• The dissolved oxygen content will remain at the DOCO (DO cut-off) so long as the chemical constituency of the sewage in-coming to tank remains the same and within the capabilities of the system and the oxygenation process continues with a constant air supply by weight.
• DO should be adequate at all times in the system. When oxygen limits the growth of microorganisms, filamentous organisms may predominate and the settleability and the activated sludge process may be poor.
• Proper food-to-microorganism (F/M) population ratio is the single most important parameter affecting the efficiency of an activated sludge system and the health of the biomass