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General Planning of the Sewer Network. General Planning of the determination of upgrade works needed at the existing Wastewater Treatment Plant. Final Design and Tender Document preparation of parts of the sewer network of the Karditsomagoula and Artesiano areas in the Municipality of Karditsa. Environmental Assessment Study
Consultant for assisting DEYAK in the preparation of the application file and the submition of the relevant application for funding of the Treatment and Disposal of Sewage Sludge works of the Wastewater Treatment Plant (WWTP) of the Municipality of Karditsa. General plans and basic design plans of proposed works. Assistance in Project Data documentation (scope determination, losses estimation report etc).
The Technical Consultant assisted in:
Consultant for assisting DEYAMV in the assesment of current water supply situation in N. Ionia area, water network zoning and calculations, water network separation in water losses control zones (District Metered Areas – DMAs). Control stations and relevant equipment determination. General plans and basic design plans of proposed works. Assistance in Project Data documentation (scope determination, losses estimation report etc).
The stormwater and drainage works design of the 180km2 basin refer to :
- The main higway, 19.235 km long
- Three (3) tunnels,
- Four (4) valley bridges,
- One (1) bridge (Vellias stream)
- Three (3) overpasses
- Eleven (11) underpasses.
- Three (3) interchanges : (α) Ag. Marinas - Stylidas(β) Stylidas - Karavomilou (γ) Karavomilou - Ahinou.
- Sideways and other local roads
- Temporary works during construction period.
It is a rockfill dam with clay core, 77m high and 560m crest length. The total volume of the dam is 2.700.000m3. The dam is founded on gneiss. Dam reservoir’s capacity is 12.000.000m3.
The spillway has discharge flow of 370m3/s (PMF), with maximum width 32m. The energy dissipation is achieved through a flip bucket and a steeling basin.
The cross-section of the diversion tunnel is of horseshoe shape with 150m radius. When the construction is over, it is converted to an intake and reservoir drain works.
This project is part of the reallocation plan for the plain. Therefore the existing irrigation system is fully redesigned, taking into account the optimal utilisation of the available water resources.
The works included:
- The designed network covers an area of 160.000.000 m2.
- It is consisted of 9 irrigation zones, which are irrigated by pumping stations. Kerkini lake is the main supply reservoir providing water to all the irrigation zones through the main delivery canal.
- Downstream Control is used.
- The computational magnitude of the network is major and includes:
o The lower zone with 11161 links and 7502 nodes
o Middle zone Μ1 with 2250 links and 1479 nodes
o Middle zone Μ2 with 102 links and 69 nodes
o Hgher zone with 235 links and 153 nodes
- Both uniform and separated zone distribution network calculations were made
- The project includes a circumferential distribution water mains for the regulation of the tanks’ supply and the ability for two-way water flow.
