Energy Savings at Phoenix 23rd Avenue Wastewater Treatment Plant Using Feed-Forward Process Control

2009 ◽  
Vol 2009 (13) ◽  
pp. 3722-3729 ◽  
Author(s):  
Thomas Walz ◽  
J.R. Coughenour ◽  
Kevin Williams ◽  
John Jacobs ◽  
Larry Shone ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Process Control ◽  
Wastewater Treatment Plant ◽  
Energy Savings ◽  
Treatment Plant ◽  
Feed Forward ◽  
Forward Process

scholarly journals Real-time model predictive control of a wastewater treatment plant based on machine learning

2020 ◽  
Author(s):  
A. Bernardelli ◽  
S. Marsili-Libelli ◽  
A. Manzini ◽  
S. Stancari ◽  
G. Tardini ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Large Scale ◽  
Municipal Wastewater ◽  
Energy Savings ◽  
Treatment Plant ◽  
Main Process ◽  
Municipal Wastewater Treatment ◽  
Time Model ◽  
The Right

Abstract Two separate goals should be jointly pursued in wastewater treatment: nutrient removal and energy conservation. An efficient controller performance should cope with process uncertainties, seasonal variations and process nonlinearities. This paper describes the design and testing of a model predictive controller (MPC) based on neuro-fuzzy techniques that is capable of estimating the main process variables and providing the right amount of aeration to achieve an efficient and economical operation. This algorithm has been field tested on a large-scale municipal wastewater treatment plant of about 500,000 PE, with encouraging results in terms of better effluent quality and energy savings.

Dissolved oxygen controller based on on-line measurements of ammonium combining feed-forward and feedback

2002 ◽  
Vol 45 (4-5) ◽  
pp. 453-460 ◽  
Author(s):  
P. Ingildsen ◽  
U. Jeppsson ◽  
G. Olsson
Keyword(s):  
Wastewater Treatment ◽  
Dissolved Oxygen ◽  
Energy Savings ◽  
Treatment Plant ◽  
Point Of View ◽  
Feed Forward ◽  
On Line ◽  
Energy Consuming ◽  
In Situ Sensor ◽  
Short Time

As the largest single energy-consuming component in most biological wastewater treatment systems, control of aeration is of great interest seen from an energy savings point of view. This paper suggests a simple way of using on-line ammonium measurements to control aeration in a pre-denitrification plant by controlling the dissolved oxygen setpoint. The controller works primarily by feed-forward based on an ammonium sensor located at the head of the aerobic process part. Using online in-situ sensor measurements directly from the process have the important advantage over effluent measurements that there is no or very short time delay for information. The controller has been implemented in a full-scale wastewater treatment plant for a period of 35 days. During the experiment two identical activated sludge lines were used. The controller was implemented in one line, while the other line worked as a reference for comparison. The preliminary results indicate that the described control strategy leads to energy savings for the aeration in the region of 5–15%, while maintaining approximately the same effluent quality as in the reference line. Even higher energy savings can probably be achieved by optimising the controller. An automatic procedure for updating the controller parameters based on dynamic effluent ammonium measurement has been tested.

A laboratory for teaching process control: The wastewater treatment plant

2020 ◽  
pp. 002072091989756
Author(s):  
Inés Tejado ◽  
Emiliano Pérez
Keyword(s):  
Wastewater Treatment ◽  
Process Control ◽  
Wastewater Treatment Plant ◽  
High Performance ◽  
Treatment Plant ◽  
Industrial Process ◽  
Control Engineering ◽  
Embedded Controller ◽  
Industrial Process Control ◽  
The University

Laboratory experiments offer one way to introduce more realism in education and play a key role for the acquisition of practical skills, especially in engineering. This paper addresses the development of an equipment to teach fundamentals of industrial process control engineering mainly for undergraduate courses at the University of Extremadura. The laboratory consists of the DELTALAB–COSIMI wastewater treatment plant SP244, which is controlled by a CompactRIO-9014 high-performance real-time embedded controller, a kind of programmable logic controller of National Instruments. Learning objectives and a summary of students activities carried out in the laboratory lessons are given to illustrate the possibilities of use of this equipment for teaching of industrial process control.

Model calibration and feed-forward control of the wastewater treatment plant - case study for CLUJ-Napoca WWTP

2017 ◽  
Vol 32 (2) ◽  
pp. 164-172 ◽  
Author(s):  
Abhilash Nair ◽  
Vasile-Mircea Cristea ◽  
Paul Şerban Agachi ◽  
Marius Brehar
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Model Calibration ◽  
Treatment Plant ◽  
Feed Forward ◽  
Feed Forward Control

scholarly journals Application of online instrumentation in industrial wastewater treatment plants – a survey in Flanders, Belgium

2018 ◽  
Vol 78 (4) ◽  
pp. 957-967 ◽  
Author(s):  
R. Cornelissen ◽  
T. Van Dyck ◽  
J. Dries ◽  
P. Ockier ◽  
I. Smets ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Process Control ◽  
Wastewater Treatment Plant ◽  
Water Reuse ◽  
Treatment Plant ◽  
Automatic Process ◽  
Control Mechanisms ◽  
Real Time Control ◽  
Widespread Application ◽  
General Process

Abstract A survey regarding online instrumentation and control was conducted among 90 companies managing their own biological wastewater treatment plant in Flanders, Belgium. In this study, all types of online instrumentation have been found suitable for automatic process control. However, its integration in general process control as well as in nitrogen removal and chemical dosing control appeared to be rather limited. Only dissolved oxygen and pH sensors were widely applied, being present in 96% and 69% of the plants, respectively. Widespread process integration is mainly obstructed by the fact that companies, especially small and medium-sized, still do not regard wastewater treatment as a full-fledged part of the production process. Operators often lack technical expertise in this domain and tend to be skeptical towards automated control mechanisms. In addition, the price of online instrumentation is still perceived as too high, in particular at smaller companies. Lastly, the design of the existing wastewater treatment plant does not always allow for real-time control. Certain measures such as operator training, monitoring of energy and chemical consumption and reduction of instrumentation costs are essential for widespread application of online process control in future years. Additionally, water reuse can create an important incentive.

Energy savings by reduced mixing in aeration tanks: results from a full scale investigation and long term implementation at Avedoere wastewater treatment plant

2011 ◽  
Vol 64 (5) ◽  
pp. 1089-1095 ◽  
Author(s):  
A. K. Sharma ◽  
T. Guildal ◽  
H. R. Thomsen ◽  
B. N. Jacobsen
Keyword(s):  
Wastewater Treatment ◽  
Flow Velocity ◽  
Wastewater Treatment Plant ◽  
Energy Savings ◽  
Treatment Plant ◽  
Full Scale ◽  
Long Term Results ◽  
Treatment Efficiency ◽  
Negative Effect

The aim of this project was to investigate the potential of reducing number of mixers in the biological treatment process and thereby achieve energy and economical savings and contribute to cleaner environment. The project was carried out at Avedoere wastewater treatment plant and a full scale investigation was conducted to study the effect of reduced mixing on flow velocity, suspended solid sedimentation, concentration gradients of oxygen and SS with depth and treatment efficiency. The only negative effect observed was on flow velocity; however the velocity was above the critical velocity. The plant has been operating with 50% of its designed number of mixers since September 2007 and long term results also confirm that reduced mixing did not have any negative effect on treatment efficiency. The estimated yearly electricity saving is 0.75 GWh/year.

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