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Water reuse in Asprovalta, Municipality of Volvi, Thessaloniki

4 June, 2050

Water reuse in Asprovalta, Municipality of Volvi, Thessaloniki

Waste water source

The municipal wastewater treatment plant of Asprovalta receives and treats urban wastewater from Asprovalta city.

Distribution System

The treated effluent goes either directly to the river, or to the nearby land area by surface irrigation.

Farming system

Reclaimed water is used to irrigate natural vegetation areas, with bushes, native trees and olive trees. The irrigated agricultural land is located next to the treatment unit.

Waste water treatment description

Nutrient removal : Nitrification, denitrification and biological phosphorus removal.
Pesticide removal : none
Disinfection : Chlorination
Suspended solids removal : Aeration and secondary treatment with sedimentation
Other :


The plant was designed initially for a population equivalent of 10,860 with a maximum treatment capacity is 40,000 population equivalent. The population in summer increases of 100%.
The plant has following characteristics:
Total incoming load  (Kg BOD5/d): mean annual: 2,800 max annual: 3,200
Incoming sewage load (Kg BOD5 /d): mean annual: 2,000 max annual: 2,400
Inlet load sewage sludge (Kg BOD5/d): mean annual: 800,  max annual: 800
Total incoming flow to treatment plant (m3/d): mean annual: 50, max annual: 600

Extent of the agricultural beneficiaries

The extent of the agricultural land which benefits from the reclaimed water is 120 hectares.


The cost of reclaimed water is estimated at 0.6 euro /m3.

Type of agreement

The Wastewater Treatment Plant of Asprovalta is owned and operated by the Water and Sewer Municipal Company of Volvi. The owner has the responsibility of reclaimed water distribution works

Scientific results

Additional information




Type of initiative
Waste water source
Waste water treatment
Nutrient removal, Desinfection, Suspended solids removal
Farming system
Permanent crops
Application use
Irrigation of food crops to be eaten raw, Irrigation of non-food crops
Irrigation method
Surface irrigation
Implementation stage