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| Design of Automatic Control System for AAO Biological Tank |
| Bai Jingzhong |
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Abstract In the current sewage treatment process of urban wastewater treatment plant, AAO (Anaerobic/anoxic/oxic ) biological
pool occupies a pivotal position. It can achieve expected design effect of the nitrogen and phosphorus removal by setting appropriate
online detection instruments in the AAO biological pool, using advanced PLC automatic control system, regulating the
amount of aeration, returned sludge and other parameters. In order to adjust the design parameters of the AAO biological pool according
to the water quality and temperature etc., by combining inverter, advanced automatic control technology and communication
technology to control frequency of blower, returned sludge pump and so on, it not only can meet the requirements of process design,
but also be a more energy-efficient technical means.
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Published: 10 November 2017
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