Wastewater "gets beautiful" with ultrasound treatment
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Web Content Article on-date Feb 22, 2021 2:27 PM
2021-02-22 Depuratore Gruppo Hera Snam and Hera announce that they have signed a Letter of Intent for a technological collaboration aimed at developing hydrogen, for their own areas of activity...
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Web Content Article on-date Feb 8, 2021 1:53 PM
2021-02-08 The Group has received Gold Class status for ranking as "Industry leader" in the Dow Jones Sustainability Index, one of the world's most authoritative stock market indices assessing ESG...
Comunicati stampa: Hera Spa Other press releases -
Web Content Article on-date Feb 8, 2021 9:15 AM
2021-02-04 Aimed at contributing to decarbonising the agriculture sector, Hera has signed a memorandum intended to study the feasibility of a project for generating and using green hydrogen, linked...
Comunicati stampa: Hera Spa Other press releases -
Web Content Article on-date Jan 27, 2021 1:40 PM
2021-01-27 Once again, for the second consecutive year, Hera has been included in this index, which measures gender equality and the promotion of diversity and inclusion. The Hera Group pays close...
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Web Content Article on-date Jan 25, 2021 2:44 PM
2021-01-25 Tomaso Tommasi di Vignano The Group, after gaining recognition as the best company in Italy in 2020, has once again obtained this certification of excellence in managing human resources....
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The ultrasound hydrolysis system, installed in the Forlì treatment plant, makes the life cycle of wastewater sludge circular. The result: less sludge to dispose of, and more biogas produced.
Wastewater is all the water that, after having been used in domestic, agricultural, and industrial activities, must be treated before being returned to the environment.
This water contains a solid part – sludge – which is removed during treatment. But, in addition to giving a new life to wastewater, can we also make the sludge life cycle circular, by reducing the amount to be disposed of?
Back in 2017, we started research to answer these questions, and, once again, we decided to invest in new technologies to lighten the impact on the environment and be more virtuous. In November 2019, our efforts became a reality, thanks to the ultrasound sludge hydrolysis system, installed at the Forlì treatment plant.
In this system, part of the sludge from the wastewater treatment process is subjected to sound waves. The waves, in contact with the liquid matrix to be treated, biodegrade more volatile solids, increasing biogas production, and reducing the final dry matter in the sludge. All this makes it possible to significantly reduce the volume of sludge to be disposed of and opens up new scenarios for the use of the biogas obtained thanks to the ultrasound system.
During 2020 the initial results will be reported and we look forward to sharing the successes of this new adventure with you.
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