Biogas, which is generated in the wastewater treatment plant during the stabilisation of sewage sludge, can be used to produce electricity in addition to the production of heat once the combined heat and power plant is launched.
WD News: AS Tallinna Vesi has recently signed a contract with Filter Solutions OÜ for the construction of a Combined Heat and Power (CHP) plant at the Wastewater Treatment Plant at Paljassaare, which will help to reduce the cost of heat and electricity by using biogas generated in the wastewater treatment process.
The cost for the construction of the new CHP complex is approximately EUR 2.4 million and the plant is expected to be launched at the end of 2023. The contract with the Solutions OÜ also includes maintenance during the warranty period.
“This is a very environment friendly way of producing energy that allows to add value to biogas that we produce ourselves as a by-product,” explained Aleksandr Timofejev, Chief Executive Officer of Tallinn Vesi, adding that the investments in a combined heat and power plant reduce the company’s cost of purchasing electricity for operating the wastewater treatment plant, improve the security of the plant’s electricity supply and enable better management of the purchase of electricity.
The construction of the combined heat and power plant is part of a larger project. It also includes the reconstruction of digesters at the wastewater treatment plant in Paljassaare, which will ensure that the energy potential of sewage sludge is maximised. After the reconstruction of digesters, approximately 3.2 MWh of biogas can be produced from sewage sludge every hour.
Source: Tallinna Vesi
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