Overview
Kastela Trogir Divulje is a primary treatment plant in Splitsko-dalmatinska županija, Croatia, with a designed capacity of 90,000 m³/day. It serves the coastal Kaštela Bay area, discharging treated wastewater into the Adriatic Sea.
Kastela Trogir Divulje is a wastewater treatment plant located in Splitsko-dalmatinska županija, Croatia, serving the coastal communities of Kaštela and Trogir. The plant has a designed capacity of 90,000 m³/day, indicating it is a large-scale facility. As a coastal plant within 10 km of the Adriatic Sea, it plays a critical role in protecting the marine environment of Kaštela Bay. The plant operates at a primary treatment level, which involves physical processes like sedimentation to remove solids. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations of this scale (over 150,000 population equivalent) in sensitive coastal areas are typically required to provide secondary or tertiary treatment. The current primary treatment level suggests the plant may be subject to transitional arrangements or specific local conditions. The treated effluent is discharged into Kaštela Bay, a semi-enclosed basin of the Adriatic Sea. This coastal area supports diverse marine life and is important for tourism and fisheries. The discharge of primary-treated wastewater can contribute to nutrient loading and potential eutrophication, highlighting the need for advanced treatment to safeguard the bay's ecological health.
Environmental context
The plant discharges into Kaštela Bay, a coastal embayment of the Adriatic Sea in the central Dalmatian region. The bay receives freshwater from the Jadro River and other small streams, and its waters support seagrass meadows, fish nurseries, and migratory bird populations. The proximity to the sea means that effluent can quickly affect marine water quality, particularly in the absence of advanced nutrient removal. The broader Adriatic Sea is a semi-enclosed basin with limited water exchange, making it sensitive to nutrient pollution from coastal discharges.
Frequently asked questions
The plant is located in Splitsko-dalmatinska županija, Croatia, near the coastal towns of Kaštela and Trogir, along the eastern shore of the Adriatic Sea.
The plant has a designed capacity of 90,000 m³ per day, making it a large-scale facility serving the Kaštela Bay area.
The plant discharges treated effluent into Kaštela Bay, a coastal inlet of the Adriatic Sea. The discharge point is within 10 km of the coast.
The plant operates at primary treatment level, which involves physical sedimentation. Under the EU Urban Waste Water Treatment Directive, large coastal agglomerations typically require secondary or tertiary treatment to protect sensitive marine areas.
As a Croatian facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets standards for collection and treatment based on population equivalent and receiving water sensitivity. Coastal discharges in the Adriatic Sea are subject to stringent requirements to prevent eutrophication.
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