Zuverlässige Trennung von Abfällen und Verwertung von organischen Fraktionen zu Bioenergie
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Gello di Pontedera

In the near future, biowaste collected in the municipalities of Pisa, Italy, will be treated in the Anaerobic Digestion Plant in Gello di Pontedera. The Public Private Partnership GEOFOR S.p.A., has assigned the Consortium Biotec Sistemi/Costruzioni ICEF/Impresa Milici with the design, construction, installation and commissioning of this facility, which will be according to the BTA® Process.

Consortium leader and responsible partner for the technological processes and the mechanical and electrical installation will be Biotec Sistemi S.r.l., partner and licensee of BTA International GmbH in Italy. BTA International will support Biotec in the process, detail engineering, and assist in the commissioning phase. Furthermore, BTA will supply some key components for the BTA® Process as well as the control unit for the overall facility.

The AD Plant Gello di Pontedera will be able to treat up to 44.000 ton/ year of biowaste and 7.000 ton/year of green waste. The waste will be directly fed, without any previous mechanical pre-treatment, into the BTA® Hydromechanical Pre-Treatment for the removal of impurities from the digestible organic fraction before the obtained organic suspension is processed in an wet anaerobic digestion step in two 4.000 m³ fully mixed digesters. The produced biogas, approx. 4,65 million Nm³/year will be valorized in CHP units, obtaining approx. 12 million kWh/year.

Dewatering will be executed in two steps, thus allowing reducing both the consumption of flocculants and fresh water. An intelligent process water management – another advantage of the BTA® Process – furthermore minimizes water consumption and therefore effluent water. Due to the low content of remaining impurities, the digestate solids are an ideal raw material for quality compost. Composting is executed on-site in a closed hall with boxes with a controlled aeration. Thus, the AD Plant Gello di Pontedera will allow both an energetic as well as material valorization of the biowaste collected in this region of Tuscany.

Project Facts

Type of Waste:

Biowaste, Green Waste


44.000 tons/year FORSU
7.000 tons/year Green Waste

Start-up:2nd half 2020
Final Client:GEOFOR S.p.A.

BTA Italia GmbH

Plant Sections:

• Waste reception
• BTA® Hydromechanical Pre-Treatment
• Wet anaerobic digestion
• Biogas valorization in CHP units
• Two step solid-liquid separation
• Composting
• Internal process water management
• Effluent treatment