Patented Solutions

Method for Wastewater Treatment with Controlled Denitrification.

Wastewater flows into the inlet tank and subsequently enters (or is pumped into) the SBR reactor where the actual biological treatment takes place. The reactor is aerated during filling and then brought to rest after filling. After the sludge settles at the bottom the excess sludge is first pumped into the sludge tank and then the sub-surface layer of treated water is drawn off by a special device (a decanter) to the treatment plant’s outlet or for tertiary treatment on an automatically backwashed sand filter. During periods when the reactor is not aerated air from the blower is directed into the inlet tank where pre-treatment of wastewater occurs. The process of treatment is controlled by a control unit with a special program.

This is a device for decantation (removal) of treated water from the activation tank of the SBR reactor equipped with a movable outlet arm and a float. Treated water is pumped from a layer approximately 10 cm below the surface of the bioreactor preventing the escape of biological foam into the outlet.

This device (chamber) is a part of the TOPAS wastewater treatment plant filled with sand and submerged in water. Pre-treated water from the treatment plant is directed through piping to the surface of the sand filter and passes into the space of a double bottom due to hydrostatic pressure from where the treated water is pumped out to the outlet.

This is a special anti-corrosion construction for wastewater treatment plant tanks made from profiled steel sheets and thermoplastics, utilizing the advantages of both types of materials. The tanks are manufactured by welding segments of sandwich construction where the surface of the sandwich panel is made of thin-walled polypropylene sheets and a hermetically sealed galvanized steel sheet is placed inside the walls. The steel provides the tank with strength based on static calculations for the required load and the plastic ensures the watertightness of the construction and anti-corrosion protection of the steel sheet. These tanks are suitable for both surface and excavated placements. Underground tanks are installed on a concrete base and are typically designed without the need for wall concreting. The tanks can be installed without additional construction modifications even below the groundwater level.