Viltra's IWOX® Premium is a 3-stage sewage treatment plant in a two-tank configuration that uses a biological process to effectively treat sewage. It is a highly efficient, reliable and cost-effective solution to sewage disposal for domestic applications where there is no access to a main sewer.
• Very small footprint
• Manufactured in NI from robust, impact-resistant tank grade polyethylene – unlike alternatives which are prone to cracking if not handled carefully
• Can be tailored to suit individual sites
• Certified for up to 8 people (1200 Litres per day)
• Easily installed due to light weight material
• Quiet in operation
• Extremely low maintenance and running costs; only one mechanical part (Energy efficient Air Pump – 50-55W)
✓ Only one mechanical part - (Energy efficient Air Pump – 50-55W)
✓ Strong and secure access covers
✓ One-piece mould with no joints below water line
✓ Rotationally moulded in tough, durable tank-grade polyethylene for easy and cost-effective installation
✓ Unique buffer zone technology
✓ Features an external air compressor failure alarm – which can be fitted anywhere on the premises
✓ 1 Year Warranty*
*Blower & Small Parts
Environment Agency Standard
IWOX ® Premium is a two-tank system that has been tested and certified to meet the current Environment Agency standard of 97.5%
How it works
The wastewater influent flows straight into the settlement tank. Larger and heavier pieces of waste in the flow will sink to the bottom of the compartment. At least once every year, the presence of these materials has to be checked (sludge judge test). If the water flow from the pre-settlement tank to the oxidation compartment is blocked, these materials have to be removed from the tank.
In the oxidation compartment, purification of waste particles in the wastewater is carried out by bacteria in the activated sludge. Here, Chemical Oxidation Demand pollutants (COD) and Biological Oxidation Demand pollutants (BOD) are removed, and ammonia (NH4) is transformed into nitrate (NO3). The oxidation compartment also features a tube diffuser which provides the water with continuous airflow. A desired oxygen concentration (minimum of 1.5 mg O2/l) can be created with the adjustment of a valve.
Final Settlement Area (Clarifier compartment)
Water and suspended solids are separated here. In the clarifier compartment, the activated sludge that has formed and settled on the bottom is returned to the aerobic compartment, thus achieving a more efficient pollutants removal. The circulation is performed by an airlift pump, which increases the system power efficiency. Once the pollution removal is achieved, the treated water (effluent) is discharged via the outlet pipe.