Wastewater purification system

Details Wastewater purification system Wastewater purification system

2004-04-07

2009-02-24

Barry, Chester T (Department: 1797)

Liquid purification or separation

Processes

Treatment by living organism

C210S620000, C210S743000, C210S746000

Reexamination Certificate

active

07494588

ABSTRACT:
An object of the present invention is to provide a control method, for a wastewater purification system, where the status of a wastewater purification system employing a batch activated sludge process is accurately understood by analyzing the data waveforms of DO, ORP and pH. In the control method for a wastewater purification system, an aeration device is controlled by a programmable sequencer, a controller acquires respective data waveforms from a first sensor, a second sensor and a third sensor and the control status data of the programmable sequencer, the controller analyzes the data waveform of dissolved oxygen concentration from the first sensor, the data waveform of oxidation-reduction potential from the second sensor, and the data waveform of hydrogen ion concentration from the third sensor, and the controller performs an alarm process when a deviation from a previously fixed normal state is discovered as a result of the analysis.

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