A multilevel coordinated control strategy for energy conservation in wastewater treatment plants

2012 ◽  
Vol 45 (3) ◽  
pp. 288-293 ◽  
Author(s):  
Angelo Dainotto ◽  
Giacomo Barni ◽  
Francesca Giaccherini ◽  
Valeria Magnolfi ◽  
Stefano Marsili-Libelli ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Energy Conservation ◽  
Control Strategy ◽  
Wastewater Treatment Plants ◽  
Coordinated Control

scholarly journals Application and Evaluation of Energy Conservation Technologies in Wastewater Treatment Plants

2019 ◽  
Vol 9 (21) ◽  
pp. 4501 ◽  
Author(s):  
Yongteng Sun ◽  
Ming Lu ◽  
Yongjun Sun ◽  
Zuguo Chen ◽  
Hao Duan ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Energy Consumption ◽  
Energy Conservation ◽  
Energy Saving ◽  
Wastewater Treatment Plants ◽  
System Optimization ◽  
High Energy ◽  
Green Energy ◽  
Application Process ◽  
Conservation Technologies

High energy consumption is an important issue affecting the operation and development of wastewater treatment plants (WWTPs). This paper seeks energy-saving opportunities from three aspects: energy application, process optimization, and performance evaluation. Moreover, effective energy-saving can be achieved from the perspective of energy supply and recovery by using green energy technologies, including wastewater and sludge energy recovery technologies. System optimization and control is used to reduce unnecessary energy consumption in operation. Reasonable indexes and methods can help researchers evaluate the application value of energy-saving technology. Some demonstration WWTPs even can achieve energy self-sufficiency by using these energy conservation technologies. Besides, this paper introduces the challenges faced by the wastewater treatment industry and some emerging energy-saving technologies. The work can give engineers some suggestions about reducing energy consumption from comprehensive perspectives.

Apport des mesures respirométriques à la gestion d'une station d'épuration à boues activées

1998 ◽  
Vol 25 (2) ◽  
pp. 353-359
Author(s):  
B Weiss ◽  
N Roche ◽  
O Potier ◽  
M -N Pons ◽  
S Gauthier ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Oxygen Uptake ◽  
Activated Sludge ◽  
Control Strategy ◽  
Biological Process ◽  
Wastewater Treatment Plants ◽  
Good Control ◽  
Biological Sensors ◽  
Uptake Rates ◽  
First Results

New regulations for wastewater treatment that will insure greater reliability of the wastewater treatment plants are being established, that is to say in the case of an activated sludge plant, a better control of the biological process. The use of biological sensors would appear to increase the reliability of the plants by allowing the assessment of some characteristic variables of the process and by detecting as quickly as possible the influx of a toxin that is able to inhibit the biomass. We created a biosensor that measures oxygen uptake rates. According to the first results obtained, the data could lead to a good control strategy of the activated sludge process.Key words: wastewater treatment, activated sludge, respirometry, control.

scholarly journals Eco-Efficiency Assessment of Control Actions in Wastewater Treatment Plants

Water ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 612
Author(s):  
Silvana Revollar ◽  
Montse Meneses ◽  
Ramón Vilanova ◽  
Pastora Vega ◽  
Mario Francisco
Keyword(s):  
Decision Making ◽  
Wastewater Treatment ◽  
Control Strategy ◽  
Energy Use ◽  
Wastewater Treatment Plants ◽  
Biogas Production ◽  
Seasonal Effects ◽  
Effect Of Temperature ◽  
Seasonal Effect ◽  
Control Actions

This work explores the possibilities of improving the eco-efficiency of Wastewater Treatment Plants (WWTPs) introducing a plant-wide perspective in the formulation of the control strategy. Eco-efficiency goals are contemplated in the analysis of the appropriateness of control actions, considering the seasonal effects of temperature into the decision-making process. Plant-wide control strategy handles are the operation variables of the activated sludge process, the volume of the primary clarifier, and the temperature of the anaerobic digester. Performance is evaluated in terms of energy use, biogas production, effluent quality, emissions to air and soil, considering annual and bimestrial average values of indicators to capture seasonal effect of temperature. The result is a set of possible solutions, obtained from a multi-objective decision-making procedure, consisting on a sequence of control actions applied at different temporal windows that improve the eco-efficiency indicators of the plant. The results obtained when applying the different solutions make evident how the application of plant-wide control strategies is useful to improve performance indicators that represent individual goals, leading to trade-off solutions that describe WWTPs’ eco-efficiency.

scholarly journals Benchmark simulation models, quo vadis?

2013 ◽  
Vol 68 (1) ◽  
pp. 1-15 ◽  
Author(s):  
U. Jeppsson ◽  
J. Alex ◽  
D. J. Batstone ◽  
L. Benedetti ◽  
J. Comas ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Future Development ◽  
Control Strategy ◽  
Wastewater Treatment Plants ◽  
Control Strategies ◽  
Simulation Models ◽  
Technical Report ◽  
Benchmark System ◽  
Temporal And Spatial ◽  
Quo Vadis

As the work of the IWA Task Group on Benchmarking of Control Strategies for wastewater treatment plants (WWTPs) is coming to an end, it is essential to disseminate the knowledge gained. For this reason, all authors of the IWA Scientific and Technical Report on benchmarking have come together to provide their insights, highlighting areas where knowledge may still be deficient and where new opportunities are emerging, and to propose potential avenues for future development and application of the general benchmarking framework and its associated tools. The paper focuses on the topics of temporal and spatial extension, process modifications within the WWTP, the realism of models, control strategy extensions and the potential for new evaluation tools within the existing benchmark system. We find that there are major opportunities for application within all of these areas, either from existing work already being done within the context of the benchmarking simulation models (BSMs) or applicable work in the wider literature. Of key importance is increasing capability, usability and transparency of the BSM package while avoiding unnecessary complexity.

Analysis and balance of phosphorous removal from wastewater at urban wastewater treatment plant

2020 ◽  
Vol 15 (2) ◽  
pp. 142-151
Author(s):  
Peter Lukac ◽  
Lubos Jurik
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Wastewater Treatment Plants ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Phosphorus Recovery ◽  
Anaerobic Sludge ◽  
Biological Phosphorus Removal ◽  
The Mean

Abstract:Phosphorus is a major substance that is needed especially for agricultural production or for the industry. At the same time it is an important component of wastewater. At present, the waste management priority is recycling and this requirement is also transferred to wastewater treatment plants. Substances in wastewater can be recovered and utilized. In Europe (in Germany and Austria already legally binding), access to phosphorus-containing sewage treatment is changing. This paper dealt with the issue of phosphorus on the sewage treatment plant in Nitra. There are several industrial areas in Nitra where record major producers in phosphorus production in sewage. The new wastewater treatment plant is built as a mechanicalbiological wastewater treatment plant with simultaneous nitrification and denitrification, sludge regeneration, an anaerobic zone for biological phosphorus removal at the beginning of the process and chemical phosphorus precipitation. The sludge management is anaerobic sludge stabilization with heating and mechanical dewatering of stabilized sludge and gas management. The aim of the work was to document the phosphorus balance in all parts of the wastewater treatment plant - from the inflow of raw water to the outflow of purified water and the production of excess sludge. Balancing quantities in the wastewater treatment plant treatment processes provide information where efficient phosphorus recovery could be possible. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. There are also two outflows - drainage of cleaned water to the recipient - the river Nitra - 9.9 kg Ptot/day and Ptot content in sewage sludge - about 120.3 kg Ptot/day - total 130.2 kg Ptot/day.

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