The challenge was to provide the operator with a reliable solution suitable for wastewater containing fats, wet wipes, and especially sand.
Each of the 4 holiday complexes was equipped with the following components:
• Concrete pump chamber Ø 1450 H 2300 mm with automatic coupling system and complete pressure pipeline DN 65 including all fittings
• 2 x Homa GRP26 D cutter motor submersible pumps (1.9 kW / Hmax: 33.0 m / Qmax: 21 m³/h)
• HCON 25-D control unit with hydrostatic level probe LF-1 5/10
• Grease separator Ø 1450 H 2260 mm made of concrete with combined sludge trap for up to 7 l/s according to NEN-EN 1825
Waste water and sewage systems
Project description:
QRSTU Zandvoort Holding B.V. modernized and expanded several holiday resorts on the popular beach of Zandvoort. Former campsites were transformed into exclusive glamping resorts with luxury accommodations, tiny houses, RV pitches, and high-quality restaurants. Due to the increased wastewater volume – particularly from greasy kitchen wastewater and higher guest usage – the existing disposal solution reached its limits. The growing use of wet wipes and sand from shower drains increasingly led to pump blockages and failures.
Solution:
In close cooperation with the operator and based on decades of experience in similar applications, HOMA Pompen Netherlands recommended robust cutter pumps of the GRP26 D type, designed specifically for handling heavily contaminated wastewater. These are installed in a concrete pump chamber with an automatic coupling system that allows quick access for maintenance and service – an important factor for trouble-free operation in high-traffic facilities.
Special Challenges:
Another special feature of this project is the use of a concrete grease separator with integrated sludge trap according to NEN-EN 1825, with a capacity of up to 7 l/s. This ensures that the significantly increased kitchen wastewater is handled reliably and in compliance with standards. The twin-pump station is controlled via an HCON 25-D with hydrostatic level probe. This control unit not only enables automatic alternating operation but also allows a manually controlled reverse run for the quick removal of blockages – a highly practical function for problematic solids, such as those found in RV wastewater. A critical factor was also the heavy strain caused by sand in the wastewater – a challenge where many pump manufacturers avoid using cutter systems. That’s why HOMA was chosen: GRP pumps are equipped with a stainless-steel cutter with a hardness of 55 HRC, proven in over 100 comparable installations with high sand content since the 1990s. For the operator, in addition to technical quality, service was crucial: HOMA Pompen handled the complete design and planning of the system and ensured 24-hour availability in emergencies. Easy maintenance and high operational reliability guarantee that toilets, kitchens, and showers always remain functional – a must for satisfied holiday guests and economically successful operators.
