The 4000-liter wastewater treatment plant with a fully oxidized septic tank and fixed lid (Reference: G160471 ) is the definitive, high-efficiency solution for wastewater treatment in single-family homes, vacation homes, or small facilities without access to the main sewer system. Specifically designed as a surface system to optimally serve between 4 and 6 residents, this treatment plant stands out for its excellent purification performance, guaranteeing a completely safe and environmentally friendly wastewater discharge that complies with current regulations.

This advanced total oxidation system simulates and optimizes natural biological purification processes through the constant injection of air. This results in highly efficient decomposition of organic matter without generating unpleasant odors, producing excellent treated water quality. Its surface-mounted design with a fixed lid greatly simplifies system inspection, maintenance, and monitoring, making it a practical, durable, and robust option for any site where large excavations are not advisable or feasible.

Main Features

• Optimal capacity: 4000 liter tank, perfectly sized to cover the daily sanitation needs of 4 to 6 inhabitants.


• Total oxidation technology: Advanced biological system that guarantees the highest levels of domestic wastewater purification.


• Surface installation: Structure designed for placement on the ground, simplifying its assembly and avoiding complex underground civil works.


• Fixed safety cover: Secure and watertight top access that protects the interior from external agents and facilitates periodic maintenance tasks.


• Silent and odor-free operation: Optimized aerobic process that prevents the appearance of unpleasant odors during waste decomposition.


• High durability: Made with plastic materials that are highly resistant to corrosion, UV rays and chemical agents, ensuring a long lifespan.


• Product reference: G160471.

Frequently Asked Questions

How many people is this 4000 liter water purifier recommended for?

This model is specifically designed and sized to offer optimal purification performance in homes with between 4 and 6 inhabitants, calculating the standard flow of wastewater generated by this number of people.

What advantages does surface installation offer compared to buried installations?

The main advantage of a surface wastewater treatment plant is that it doesn't require extensive excavation or complex site work. This significantly reduces installation costs and time, making it ideal for plots with a high water table, rocky terrain, or difficult soils, while also providing direct and convenient access to the equipment.

Does the total oxidation system require a lot of maintenance?

Maintenance is simple and periodic. It mainly consists of checking the proper functioning of the aeration system, verifying the electromechanical components, and emptying accumulated sludge according to usage and the manufacturer's technical recommendations, thus ensuring consistent purification efficiency over the years.

Can the purified water be reused or poured directly?

The water resulting from the total oxidation process reaches a high degree of quality and can be safely discharged into the authorized receiving environment, into surface watercourses or used for the irrigation of green areas according to the applicable local regulations on the reuse of treated water.