wastewater treatment energy saving Articles
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Understanding energy saving and CO2 reduction in wastewater treatment plants
Wastewater Treatment Plants (WWTPs) have to deal with the issue of energy saving and/or CO2 reduction. Aeration, sludge return, chemical dosing, sludge reduction, sludge digestion, etc. could indeed have some function on this issue. On the other hand, controlled processes of COD and nutrient conversions could also be of benefit to the issue. With this paper, the relationship between energy ...
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Wastewater treatment process impact on energy savings and greenhouse gas emissions
The objective of this research was to assess the energy consumption of wastewater treatment plants (WWTPs), to apply a mathematical model to evaluate their carbon footprint, and to propose energy saving strategies that can be implemented to reduce both energy consumption and greenhouse gas (GHG) emissions in Greece. The survey was focused on 10 WWTPs in Greece with a treatment capacity ranging ...
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Sustainable cost reductions: biogas from liquid wastes - Case Study
Generate energy instead of consuming it: treating liquid wastes and wastewater on a communal basis to generate biogas is an interesting alternative to conventional wastewater treatment and disposal for dairies. This is becoming a serious consideration for the future for milk producers given the globally increasing challenges arising from wastewater regulations or CO2 guidelines. More and more ...
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GridBee AP500 Solves wet wipes problem - Case study
The $2 billion wet-wipes market and the two million lift pump stations in the U.S. may be at an impasse—at the bottom of wet well lift stations. That's where the wipes collect and form clogs, causing maintenance trauma for sewer department personnel. In one Connecticut town, a savvy sewer department foreman took the time to find the exact cause of the problem— and a simple, effective ...
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Field Performance of Fine and Ultra Fine Bubble Diffusers
History - Coarse, Medium, Fine Bubble Diffusers Diffuser efficiencies are generally measured in clean water to allow basis of comparison of similar products and prediction of actual performance in a wastewater treatment plant application. Before standard testing procedures were implemented, SOTE data were managed by the various suppliers of aeration equipment with optimistic results from ...
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Nitrogen removal in a Sequencing Batch Biofilm Reactor: effect of carbon availability and intermittent aeration
This study aimed to investigate the effects of carbon availability and intermittent aeration on nitrogen removal in a Sequencing Batch Biofilm Reactor (SBBR). The percentage of nitrogen removal in the SBBRs operating with dump fill and slow fill with optimum intermittent aeration was quite similar, 75.7% and 69.2%, respectively, indicating that intermittent aeration allowed a considerable energy ...
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Energy-efficient mixers for the activated sludge process
Approximately 70% of the total energy demand of a water or wastewater treatment plant is consumed specifically for the mixing and aeration systems in the activated sludge process. In view of that it is becoming increasingly important to use systems that deal with resources in a responsible way. HYPERCLASSIC® -Mixer – the hyperboloid mixing technologyINVENT made significant contributions to the ...
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Energy saving on wastewater treatment plants through improved online control: case study wastewater treatment plant Antwerp-South
This work provides a case study on how activated sludge modelling and computational fluid dynamics (CFD) can help to optimize the energy consumption of a treatment plant that is already equipped with an advanced control based on online nutrient measurements. Currently, aeration basins on wastewater treatment plant Antwerp-South are operated sequentially while flow direction and point of inflow ...
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