Capstone to deliver CHP system to Romanian WWTP
The new utility grid-connected system will be built for Compania Aquaserv using one Capstone C600S microturbine and one C200S microturbine. All the energy produced on-site at the plant in Mures County will be used within the WWTP.
The C600S unit will be fuelled by the biogas resulting from the anaerobic fermentation of sludge, while the C200S unit will use high-pressure natural gas from the local Romanian Distribution Network Operator.
The green energy project was launched as the site’s existing internal combustion engine cogeneration plant was reaching the end of its lifecycle. At the same time, rising electricity prices, combined with investment opportunities for wastewater treatment cogeneration projects, made it an ideal time for Compania Aquaserv to seek a more advanced cogeneration technology.
“Producing biogas from municipal wastewater sludge is a well-known and widely used approach,” said Csaba Bauer, head of the wastewater treatment department of Compania Aquaserv.
“Compania Aquaserv has over 20 years of experience using biogas in cogeneration plants to cover its energy consumption and thermal needs. In this way, we can optimise our operational costs for public sewage service, making it more affordable for the public.”
Darren Jamison, CEO of Capstone, commented: “WWTPs are among the best candidates for this kind of highly efficient green energy project. Not only is biogas a free, renewable fuel source for producing heat and electricity, it also eliminates the waste gas, which could otherwise be a global warming pollutant.
“The kind of energy efficiency we can achieve at sites like Aquaserv offers the potential for greater operational cost savings, and with the kind of incentives that are currently available in many regions, the return on investment can be substantial.”
The system is designed to provide 800 kWe electric and 1,500 kWth thermal power. It is expected to be commissioned in March.