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An automatically controlled alternate oxic-anoxic process for small municipal wastewater treatment plants

An automatically controlled alternate oxic-anoxic process for small municipal wastewater treatment plants
An automatically controlled alternate oxic-anoxic process for small municipal wastewater treatment plants
A patented automatic control device was applied to management of an alternate oxic-anoxic process in a small wastewater treatment plant (700 PE). The control system enabled the optimal time-length of the aerobic and anoxic phases to be determined by analyzing the dissolved oxygen and the oxidation-reduction potential data. Moreover, also a time set point was introduced to establish the maximum length for the two phases. Results showed high performances in biological nitrogen removal (0.7-5.2 mg of NO3-N L-1 in the effluent) and a reliable control of the treatment process also during wet weather events. In comparison with extended aeration plants of similar size, lower energetic consumption was observed, generally <200 Wh PE-1 day-1. The automatic control device was a reliable system that gave a good performance in a small wastewater treatment plant with low investment and managing costs.
0888-5885
509-515
Bolzonella, D
554b33d4-ce6f-4d05-93ac-fcc5d49187f3
Battistoni, P
05bd4392-6721-4365-a826-df1171a4a74a
de Angelis, A
77804d6e-3a58-4a44-b6b2-dcc8e63c032e
Boccadoro, R
8c085f68-359e-42d7-b86f-6576411ad16c
Bolzonella, D
554b33d4-ce6f-4d05-93ac-fcc5d49187f3
Battistoni, P
05bd4392-6721-4365-a826-df1171a4a74a
de Angelis, A
77804d6e-3a58-4a44-b6b2-dcc8e63c032e
Boccadoro, R
8c085f68-359e-42d7-b86f-6576411ad16c

Bolzonella, D, Battistoni, P, de Angelis, A and Boccadoro, R (2003) An automatically controlled alternate oxic-anoxic process for small municipal wastewater treatment plants. Industrial & Engineering Chemistry Research, 42 (3), 509-515. (doi:10.1021/ie020376g).

Record type: Article

Abstract

A patented automatic control device was applied to management of an alternate oxic-anoxic process in a small wastewater treatment plant (700 PE). The control system enabled the optimal time-length of the aerobic and anoxic phases to be determined by analyzing the dissolved oxygen and the oxidation-reduction potential data. Moreover, also a time set point was introduced to establish the maximum length for the two phases. Results showed high performances in biological nitrogen removal (0.7-5.2 mg of NO3-N L-1 in the effluent) and a reliable control of the treatment process also during wet weather events. In comparison with extended aeration plants of similar size, lower energetic consumption was observed, generally <200 Wh PE-1 day-1. The automatic control device was a reliable system that gave a good performance in a small wastewater treatment plant with low investment and managing costs.

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Published date: 2003

Identifiers

Local EPrints ID: 189037
URI: http://eprints.soton.ac.uk/id/eprint/189037
ISSN: 0888-5885
PURE UUID: f664237f-9dc9-4bda-83b6-c353d74641fb

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Date deposited: 01 Jun 2011 11:04
Last modified: 14 Mar 2024 03:34

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Contributors

Author: D Bolzonella
Author: P Battistoni
Author: A de Angelis
Author: R Boccadoro

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