scholarly journals Energy Cost Assessment of an Industrial Wastewater Treatment Plant: Effect of Design Flow

2019 ◽  
Vol 2 (3) ◽  
pp. 532-537 ◽  
Author(s):  
Pelin Yapicioğlu
Keyword(s):  
Energy Efficiency ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Energy Cost ◽  
Energy Demand ◽  
Treatment Plant ◽  
Design Flow ◽  
Dairy Wastewater ◽  
Organic Load ◽  
Design Parameters

Wastewater treatment plants are widely used to decrease harmful discharges to receiving water bodies. These plants are regarded as the top energy consumers by municipalities. Energy demand of a plant depends on the volume of wastewater treated, organic load and effluent quality requirement etc. In order to ensure energy efficiency in these plants, it should be focused on these parameters. In this study, the impacts of design parameters on energy cost for a dairy wastewater treatment plant were investigated. This paper aims to reveal the role of design flow on energy efficiency. An indicator parameter that is energy cost indicator has been used. This indicator was calculated for both design wastewater flow and operational wastewater flow. The results show that energy cost indicator of operational flow was higher than design flow that were 2.1x10-8 and 2.36x10-27, respectively. If plants are operated in design flows, energy cost can be decreased.

scholarly journals Energy Cost Estimation for a Dairy Wastewater Treatment Plant in Terms of Organic Load

2019 ◽  
Vol 2 (3) ◽  
pp. 859-864
Author(s):  
Pelin Yapicioğlu
Keyword(s):  
Energy Efficiency ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Cost Estimation ◽  
Energy Cost ◽  
Energy Demand ◽  
Treatment Plant ◽  
Dairy Wastewater ◽  
Organic Load ◽  
The Impact

Energy demand of a wastewater treatment plant is mainly based on the volume of wastewater treated and organic load. In order to obtain energy efficiency in wastewater treatment plants, these significant parameters should be considered. Dairy wastewater has a high organic content. In this study, the impact of design organic loading parameter on energy cost for a dairy wastewater treatment plant was investigated. The aim of the study is in order to reveal the role of design biological oxygen demand on energy efficiency. A new development model that is energy cost indicator has been used. This index was figured out for both design organic load and operational organic load. The results revealed that energy cost indicator of operational organic load was higher than design organic load that were 2.1 x10-8 and 7.2x10-18, respectively. If WWTPs are operated at design organic load, energy cost would be lower.

scholarly journals Measurement of Energy Production from Biogas: Evidence from the Wastewater Treatment Plant in Durres

2020 ◽  
Vol 5 (10) ◽  
pp. 1260-1262
Author(s):  
Stela Sefa ◽  
Tania Floqi ◽  
Julian Sefa
Keyword(s):  
Energy Efficiency ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Energy Production ◽  
Biogas Production ◽  
Treatment Plant ◽  
Electricity Consumption ◽  
Waste To Energy ◽  
Energy Requirements ◽  
Daily Consumption

The wastewater treatment plant serving the city of Durres, which is the second most populous city of Albania, employs the tertiary advanced wastewater treatment method and engages in biogas production to achieve energy efficiency. In order to empirically evaluate the plant’s energy efficiency realization, the total biogas produced and converted to electricity for daily consumption was measured during a three years period (2016 - 2018). The highest electricity produced was recorded in 2016, with a daily average of 844kWh compared to 550kWh and 370kWh in 2017 and 2018, respectively. So that the plant meets proper criteria to classify as an energy-efficient entity, 30.0 percent of its electricity consumption must be derived from biogas. Converted in kWh, the plant should generate 2,975 kWh/day. Based on the biomass and energy values measured during the study period, it is concluded that electricity supplied from biogas met 6.0 percent of the plant’s energy requirements, or one fifth of the energy-efficiency target. While the plant was successful in carrying out the full waste-to-energy production process, the electricity supplied from biogas was very low and did not fulfil the plant’s self-energy requirements.

Assessing energy performance and critical issues of a large wastewater treatment plant through full-scale data benchmarking

2019 ◽  
Vol 80 (8) ◽  
pp. 1421-1429 ◽  
Author(s):  
Maria Rosa di Cicco ◽  
Antonio Spagnuolo ◽  
Antonio Masiello ◽  
Carmela Vetromile ◽  
Mariano Nappa ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Real Time ◽  
Wastewater Treatment Plant ◽  
Energy Demand ◽  
Treatment Plant ◽  
Energy Performance ◽  
Detailed Knowledge ◽  
Time Data ◽  
Critical Issues ◽  
System Variables

Abstract The wastewater sector accounts for 25% of the global energy demand in the water sector. Since this consumption is expected to increase in the forthcoming years, energy optimization strategies are needed. A truly effective planning of energy improvement measures requires a detailed knowledge of a system, which can only be achieved through energy audit and real-time monitoring. In order to improve the identification of critical issues related to the use of energy resources within a wastewater treatment plant (WWTP), the paper shows the results of a monitoring campaign performed on a large WWTP in southern Italy. Data obtained for the audit cover a 4-year timeframe (2014–2017). Energy–environmental performance has been evaluated through the benchmarking of: system variables, specific consumptions, and operational indicators. Moreover, by using a real-time data measurement and acquisition system it has been possible to evaluate the real performance of the most energy-intensive apparatus of the plant (a turbo-blower), over a period of 8 months. The main results indicate that (a) the plant is mainly affected by a massive capture of infiltrations, working in conditions close to the maximum hydraulic capacity, (b) real-time energy measurements are necessary to accurately characterize plant consumptions and adequately assess their critical aspects.

scholarly journals Modeling of Electric Energy Consumption during Dairy Wastewater Treatment Plant Operation

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3769 ◽  
Author(s):  
Radosław Żyłka ◽  
Wojciech Dąbrowski ◽  
Paweł Malinowski ◽  
Beata Karolinczak
Keyword(s):  
Wastewater Treatment ◽  
Energy Consumption ◽  
Air Temperature ◽  
Biological Treatment ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Electric Energy ◽  
Dairy Wastewater ◽  
Organic Load ◽  
Electric Energy Consumption

The intensification of biological wastewater treatment requires the high usage of electric energy, mainly for aeration processes. Publications on energy consumption have been mostly related to municipal wastewater treatment plants (WWTPs). The aim of the research was to elaborate on models for the estimation of energy consumption during dairy WWTP operation. These models can be used for the optimization of electric energy consumption. The research was conducted in a dairy WWTP, operating with dissolved air flotation (DAF) and an activated sludge system. Energy consumption was measured with the help of three-phase network parameter transducers and a supervisory control and data acquisition (SCADA) system. The obtained models provided accurate predictions of DAF, biological treatment, and the overall WWTP energy consumption using chemical oxygen demand (COD), sewage flow, and air temperature. Using the energy consumption of the biological treatment as an independent variable, as well as air temperature, it is possible to estimate the variability of the total electric energy consumption. During the summer period, an increase in the organic load (expressed as COD) discharged into the biological treatment causes higher electric energy consumption in the whole dairy WWTP. Hence, it is recommended to increase the efficiency of the removal of organic pollutants in the DAF process. An application for the estimation of energy consumption was created.

Evaluation of the energy efficiency of a large wastewater treatment plant in Italy

2016 ◽  
Vol 161 ◽  
pp. 404-411 ◽  
Author(s):  
Deborah Panepinto ◽  
Silvia Fiore ◽  
Mariantonia Zappone ◽  
Giuseppe Genon ◽  
Lorenza Meucci
Keyword(s):  
Energy Efficiency ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Treatment Plant
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