Power Generation in Aquacultures, Wastewater Treatment Plants and Sewers - Sustainable and Efficient
Jun 17, 2021
A new research project of the Institute for Water and Energy Management at Hof University of Applied Sciences aims at promoting the potential and usage of hydropower in existing water facilities.
"Everywhere you see water flowing, you also see the power of water. Not using it means wasting potential," says Dr. Harvey Harbach from the Institute for Water and Energy Management (iwe) at Hof University of Applied Sciences, who came up with the idea for the research project. In the new project, five scientists from the iwe are now working on sustainable power generation in existing water plants.
Project manager Prof. Manuela Wimmer points out: "We are working only with water which is to be used additionally for power generation after initial use. Specifically, we are talking about water that has been used in aquacultures for fish farming, recycled into drinking water in wastewater treatment plants, or simply service water that flows through household sewage systems."
In all these cases, the water flows driven by gravity alone. Electric energy can be generated in the process - by using turbines or water wheels - without affecting ecosystems. Here is an example for a potential application: "In our region, for traditional aquaculture, water is routed through ponds in which fish grow. Often the young fish are pre-bred in a hatchery so that by their size, they are better prepared for the environmental conditions outside the hatchery. Therefore, in the hatchery, electricity is needed for pumps, among other things. The idea is therefore to produce the required electricity on site using sustainable methods. Hydropower, which can provide energy 24 hours a day, is ideally suited for this purpose," says Dr. Harbach.
Putting it all together in a Network
Our region is home to a wide range of expertise in the form of specialized companies, state offices, authorities and educational institutions such as the university. "Only through exchange and joint dialog can we find the best solutions for sustainable energy generation 4.0" says Dr. Harvey Harbach. Hof University of Applied Sciences not only coordinates the project but also plays an independent role in the network.
The university does not pursue any financial interests and thus offers a scientifically neutral network activity to promote water power on the basis of a cost benefit calculation. The aim of the project is bring together the whole value chain under the aspect of knowledge transfer in the network. Through the establishment of the network, the participants will be educated regarding the chances and possibilities of water power. The regular exchange supports the usage and further development of existing and new technologies of hydropower.
Hydropower contributes to climate neutrality
With the Green Deal, the European Union has set itself the goal of being climate-neutral by 2050, i.e., net greenhouse gas emissions must be completely avoided. This goal can only be achieved if the share of renewable energies in final energy consumption is increased. This share is to grow to 32% by 2030. These targets are implemented at national level with the 2030 climate protection program. One further option for decentralized power generation like wind power, solar energy and biomass is hydropower.
Hydropower is characterized by favorable production costs and 100% clean, base-load energy from power plants driven purely by altitude. The biggest challenge, however, is the ecological compatibility of the power plants. "Hydroelectric power plants, regardless of their size, may not lead to a threat to the flora and fauna of the riverbed. For this reason, no new constructions are considered in this project but exclusively existing water plants," says Prof. Dr. Wimmer.
Entire insitute works togehter
The iwe bundles competencies in the field of water and energy. "I am immensely pleased that both competencies are being brought together in this project," says institute director Prof. Dr. Tobias Plessing. Hof University of Applied Sciences works together in numerous areas of applied Green Tech research.
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