3 Plants under construction (France, Portugal & Italy)

1st BTA Plant in France

The respective experience and know-how of BTA and AR-VAL convinced a renowned Waste Management Company south of Paris, which awarded them the contract for the design and construction of an ambitious biowaste anaerobic digestion plant.
For a total investment of approximately € 23M, this facility enables the treatment of 35,000 tonnes / year of bio-waste via the BTA® Process. 
A wide variety of waste of different origin and nature can be treated there: biowaste from households, supermarkets, restaurants, commercial, food processing industry waste, as well as liquid waste.
After receiving the waste in a pit, the BTA waste pulper is fed by an overhead crane. 
All foreign materials (plastics, glass, inerts) are removed in the BTA® Hydromechanical Pre-treatment. The obtained waste pulp is further sanitized, digested and dehydrated to produce a high quality digestate that complies with the strictest standards, in particular the draft decree relating to agronomic quality and safety criteria for fertilisers.
On the other side, the produced biogas is upgraded and more than 330 m³/h of biomethane are injected into the GRDF network, that is more than 2,8 Million m³/year. This corresponds approx. to the annual gas demand of 2.000 households with 4 persons.


BTA and its French partner AR-VAL will also assist the Waste Management Company South of Paris in the operation of the installation for 2 years and in the maintenance for 5 years.
This is the first facility with the BTA® Process built in France, the result of a successful cooperation of the two partners AR-VAL and BTA International GmbH. Further plants to certainly to follow.  

Type of waste:Biowaste from households, supermarkets, restaurants, canteens, food industry and liquid waste
Capacity:35.000 tons/ year
Start-up:End of 2023
Final Client:Waste Management Company South of Paris
Plant sections:- Reception (by AR-VAL)
- BTA® Hydromechanical Pre-treatment
- Sanitation
- Wet anaerobic digestion
- Solid-liquid separation
- Internal process water management
- Digestate Management (by AR-VAL)
- Biowaste Treatment and upgrading (by AR-VAL)

Extension of the MBT Plant VALORLIS (Portugal)

After a decade of successful operation, the MBT plant in Leiria is being expanded by an additional biowaste treatment line to reflect the new environmental targets of Portugal. VALORLIS - Valorização e Tratamento de Resíduos Sólidos, S.A has assigned in September 2021 the consortium between BTA International GmbH and EFACEC Sistemas e Engenharia, S.A. with the corresponding works, as it did more than 10 years ago for the construction of the MBT plant itself.

Since its start-up in 2010, the plant has treated more than 500,000 tons of unsorted household waste. But now, with the more stringent European targets for the recovery and valorisation of organic waste, VALORLIS will also receive and process biowaste that is separately collected in the households. For this reason, VALORLIS planned the expansion of the facility by a separate treatment and digestion line for an additional 25,000 tons of biowaste per year.

The biowaste processing line will also be based on the BTA® Process, just as the existing organics treatment lines at the MBT plant. In order to keep both lines (household waste and biowaste) separate, the expansion foresees a separate pre-treatment line (according to BTA® Hydromechanical Pre-Treatment), a separate digestion line (wet digestion, mesophilic) and separate process water management.

In addition to these works, the wet-mechanical pre-treatment line for household waste is to be reinforced by replacing the original light fraction removal system with the new generation one, increasing the capacity significantly.  The same system has already been in successful operation in several MBT plants for years, e.g., in Glasgow or Malta.  

The special challenge in this project is the construction of the new line under extremely tight space conditions while the plant remains in operation, although at reduced load, in order to keep the biology running to allow for a fast start-up and ramp-up of both lines. The short timeline (both lines are scheduled to be (re)operational by the end of 2022) is other major challenge.

Type of Waste:Biowaste
Capacity:25.000 tons/ year 
Start-up:4th quarter 2022
Final Client:VALORLIS - Valorização e Tratamento de Resíduos Sólidos, S.A
Partner:EFACEC Engenhaira e Sistemas, S.A.
Plant sections:Separate processing line for biowaste including
- BTA® Hydromechanical Pre-Treatment
- Wet anaerobic digestion
- Solid-liquid separation
- Internal process water management
Reinforcement of existing wet pre-treatment line for OF-MSW

Gello di Pontedera (Italy)

In the near future, biowaste collected in the municipalities of Pisa, Italy, will be treated in the Anaerobic Digestion Plant in Gello di Pontedera. GEOFOR S.p.A. has commissioned BTA with the completion and commissioning of the plant - which will operate according to the BTA® Process.

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.

Type of Waste:Biowaste (FORSU)
Capacity:44.000 tons/year FORSU, 7.000 tons/year green waste
Start-up:2nd half 2022
Final Client:GEOFOR S.p.A.
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

 

 

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