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Database of Waste Management Technologies |
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Case Study 21 – MBT with Composting in boxes
| General Information | Photo Gallery | |
|---|---|---|
| Name: | MBT Pretreatment Unit of MSW & Sewage Sludge in Kefallinia Prefecture |
MSW Pretreatment Unit (Biodrying) in Kefalonia, Greece –construction phase. |
| Owner: | Municipality of Kefalonia | |
| Operator: | Mesogeios S.A. | |
| Technology: | MBT, Turtle Q-Ring Entsorga | |
| Designed Capacity: | 10,000 tpa | |
| Cost: | 2,000,000 € | |
| Location: | Kefalonia | |
| Served Area: | Kefalonia Island & Ithaki Island | |
| Commercial Start Up: | 2010 | |
| Contact Details | ||
| Address: | 1) Municipality of Kefalonia Valianou Square,
28 100, Argostoli, Kefalonia 2) MESOGEIOS S.A. Aeolou 67, 10559, Athens |
|
| Phone Number: | 1) +30 26710 22572 2) +30 2103837748 |
|
| Fax: | 1) +30 26710 28692 | |
| Email: | 1) info@kefalonia.gr 2) info@mesogeos.gr |
|
| Website: | 2) www.mesogeos.gr | |
Short Description
The construction of the “MBT Pretreatment Unit of MSW & Sewage Sludge” in Kefallinia Prefecture started on March 2008 and completed on October 2009. The Unit operates since February 2010 and covers an area of 8,000 m2.
The Unit includes a Pretreatment Unit and a Biostabilisation Unit. The Pretreatment Unit involves sieving/separation and size reduction processes. The biostabilisation process takes place in four (4) closed boxes (bays) which reduce the mass of the pretreated MSW at a rate of 36%. The boxes are special constructions bearing a roof equipped with a semi-permeable sheet that prohibits odours from escaping the box. The material from the boxes is then placed on land for 30 days to mature (open windrows).
In 2010 the unit received 9,650 tons of MSW from the islands of Kefalonia and Ithaki (1st year of operation, not full). After pretreatment, an amount of 4,856 tons of remaining waste were sent to the boxes.
The stabilized material has been used as a coating material at the adjacent landfill.
Key Facts
| Treatment Capacity: | 9,650 tpa | (Data of the year 2010) |
|---|---|---|
| Input Material 1 (MBT unit): | MSW | 9,650 tpa |
| Input Material 2 (Biodrying unit): | Pretreated Waste | 4,856 tpa |
| Output Products: | Compost | 3,243 tpa |
| Residues | 4,794 tpa |
Extra Information
| Treatment Capacity: | |
|---|---|
| Dimensions(LxWxH m) | 16x10x7 |
| Retention time (days) | 21-27 |
| Capacity (m3) | 405 |
| Total area occupied (m2) | 160 |
| No of boxes | 4 |
| Air requirements (m3/min) | 74.25 |
| Water used for wetting of material (m3/day) | 2.7 |
| The aeration takes place via perforated floor | |
| Technical Characteristics of Open Windrows–Maturation Stage | |
| Dimensions of windrow (L x WxH, m) | 5.5x2.5x1.5 |
| Retention time (days) | 30 |
| Total area occupied (m2) | 250 |