Retention tank and water pre‑treatment system for a hotel in Grzybowo
Inwestor / Przedsiębiorstwo Wielobranżowe EKO-BUD | Nickel Development
Grzybowo
2024
The hotel complex in Grzybowo is the first facility in Poland developed under the newly emerging Nickel Resort & Spa brand, located near Kołobrzeg. The hotel features 216 apartments, a spa zone with indoor swimming pools, and a dining area. The project is characterized by low-rise, three-storey buildings that respect the coastal greenery and dunes of the Baltic Sea landscape.
References to nature were incorporated not only into the architectural layer of the facility. The investors also ensured that it operates in harmony with the environment and complies with relevant environmental standards. Accordingly, a retention tank was installed to enable efficient stormwater management. Furthermore, in line with standards, measures were taken to prevent petroleum‑based substances – such as oils from the car park – and fats associated with food preparation in the catering area from entering the system.
The delivery of a retention tank and a stormwater pre‑treatment system in Grzybowo is an example of modern, environmentally friendly solutions applied in the hotel and catering sector. This investment not only raises the standard of the facility, but also aligns with a sustainable development strategy.
Scope of work
- delivery and installation of a TCM reinforced concrete tank with a usable capacity of 220 m³ (internal dimensions: 6 × 13.5 × 2.8 m)
- delivery, installation and commissioning of a stormwater pumping station with a flow rate of 5 l/s and a total head of 2.6 m
- delivery of an ESK‑H 10/1000 stormwater coalescing oil separator
- delivery of an EST‑H 10/1000 grease separator
Solutions implemented
The project at the hotel in Grzybowo demonstrates how to take a comprehensive and responsible approach to water and wastewater management from the very start. As part of this investment, Ecol‑Unicon supplied and installed the retention tank and the devices forming the pre‑treatment system.
To meet statutory requirements for the restaurant and catering area, we supplied a grease separator. This device effectively pre‑treats wastewater contaminated with fats and organic oils. As a result, the sewer installation is protected against clogging and damage, and unpleasant odours – potentially troublesome for hotel guests – are prevented.
We also supplied a coalescing separator with an integrated sedimentation tank, which removes petroleum‑based substances from stormwater, such as oils originating from car parks. This ensures that pollutants are removed before the water enters the retention tank or the ground, in compliance with environmental protection standards, and minimises the risk of contaminating local waters.
The investor also decided to manage stormwater on site, opting for an underground reinforced concrete tank. Its modular design, made from prefabricated elements, enabled fast installation. Despite challenging conditions, thanks to a well‑prepared subgrade and the experience of our team, the tank was installed quickly and without issues.
The retention tank offers high watertightness and durability. The stored water will be used for irrigating greenery and maintaining landscape features, while excess water is discharged to the municipal sewer network via a stormwater pumping station.
What are the main benefits of this project?
The applied solutions will deliver tangible benefits to the facility operator. With proper operation, the installed equipment will support smooth and efficient staff work, reduce costs related to irrigation, and help mitigate the effects of sudden weather events. As a result, the facility will operate more efficiently, be more environmentally friendly and provide greater comfort for guests.
Marika Kraus-Hiszczyńska, Senior Technical and Commercial Manager