The owner of a villa, featuring one ground floor, three upper floors, and a basement, sought to convert the basement into a luxurious living area. This renovation included plans for a full restroom, a soaking tub, and a laundry room.

The basement initially lacked a wastewater drainage system. According to the design firm, gravity presented the main challenge. Traditional drainage operates downwards, making it impossible for wastewater to naturally exit a basement situated below the building's main drainage level. Previous solutions, like constructing an on-site collection pit, led to issues such as odors, mold, and exposed elements that compromised the space's aesthetics.

To address this, the technical team at Toan Thanh Construction Co., Ltd., the construction unit, chose to implement SFA Pumps' wastewater lifting pump station solution, moving away from traditional collection pits.

In just three days, the Lake View villa's basement transformed from a raw shell into a complete multi-functional space. This rapid completion was possible because the lifting pump solution did not require structural floor demolition.

The solution involves two lifting pump units installed within a technical pit. These units can pump wastewater upwards 4.5 m and horizontally 25 m to connect with the building's main drainage system. The system's benefits include being airtight, continuous, and preventing waste accumulation.

Two distinct devices handle separate tasks: Sanicubic collects black water from the toilet, while Sanicom gathers grey water from the lavabo, soaking tub, and washing machine. This source separation allows each device to operate at its designed capacity, extending the system's lifespan and reducing environmental impact.

From the entrance, no exposed pipes are visible on the walls or floor. The two collection devices are positioned discreetly next to the restroom, connecting directly to the discharge points without requiring concealed underfloor piping. Following installation, the construction team covered the equipment and pipes with floorboards, ensuring a clean aesthetic.

The renovated bathroom and toilet corner. From the entrance, no exposed pipes are visible on the walls or floor, a benefit of using the lifting pump station over traditional concealed drainage. This solution avoided demolition, preserving the structural integrity of walls and floors. According to the construction unit, by overcoming gravity's constraints on wastewater, architects gained the freedom to position bathrooms, kitchens, or laundry areas anywhere in the basement, without needing to factor in floor slopes or drain locations.

The homeowner is considering converting the building into a restaurant chain. The basement's lifting pump system allows for capacity expansion without needing wall demolition or re-drilling. This technology can handle commercial wastewater volumes significantly larger than residential requirements.

By Hoai Phuong