Function and Principle of Operation

The user can see what water is in the tank because he is watering with it and is therefore really interested in having everything in order, in having clean water in the tank and having it available even in the dry summer months. So, this changes the overall view of users on wastewater treatment. From a facility that is a necessary evil to rid you of something bothersome - sewage - it becomes a facility that produces something valuable and desirable for you, i.e. water for watering.
Because it is almost entirely placed underground. A drop in temperature below about 5°C which would stop the biochemical cleaning processes can only occur if temperatures are deeply below zero for a long period and there is no inflow to the WWTP. In practice, we have installations even in the mountains and for example, in Siberia, Russia and everywhere the WWTPs work without problems.

No, never.

60 grams

BOD 5 - The Biochemical Oxygen Demand (BOD5) is a biological indicator of water pollution, specifically measuring the amount of oxygen consumed by microorganisms during the decomposition of organic matter over a period of 5 days. The average BOD5 value for household wastewater is typically around 300–400 mg/l, while for treated water, it is usually less than 30 mg/l.

PE - The Person Equivalent (PE) is a unit representing the pollution generated by one person, with an average wastewater production of about 150 litres/day and a BOD5 production of 60 grams/day.

The water is absolutely clear, clean, odourless and without turbidity. It should be indistinguishable from utility water. Often, the water at the outlet of the wastewater treatment plant is cleaner than the water in the streams into which it is discharged.
  • Almost noiseless operation.
  • Long-term durability.
  • Non-corroding plastic parts of the plant.
  • Tested according to EN 12566-3 (CE mark).
  • Low price (when considering all additional costs of standard plants).
  • Biological treatment.
  1. It ensures maximum possible maintenance by itself (automatic sludge removal from the activation tank, maintaining constant sludge concentration, sand filter washing, measuring wastewater amount, and smooth regulation of blower operation according to the actual load of the plant - without the need for timer settings).
  2. The plant has no manually adjustable fittings, which if improperly set, could lead to malfunction.
  3. Upon activation, TOPAS automatically measures inflow and sets itself to the optimal mode with minimal electricity consumption.
  4. It can be supplemented with tertiary treatment ensuring top water quality at the outflow, achieved with a patented, automatically washed sand filter (EP – European patent), possibly supplemented with UV disinfection and chemical coagulant dosing.
  5. Equipped with a special program for signalling fault states.
  6. Can be delivered with a communication module for remote data transmission, including monitoring, operation, and parameter setting by a service centre.
  7. TOPAS construction does not require concreting of tank walls unless there is increased groundwater level at the installation site.
  8. Installation of TOPAS domestic plants is possible only on a sand base.
  9. Variable inflow depth up to 1.2 m is already in the standard design.
  10. Continuously measures, records, and archives the amount of treated wastewater.
  11. Includes an equalization tank at the inflow (for TOPAS S type), capturing surge inflows, concentrated chemicals, fats, coarse impurities, etc., protecting the biological function and ensuring stable cleaning efficiency.
  12. Guarantees biological function for at least 3–6 months after inflow interruption, making TOPAS suitable for recreational facilities.
  13. Almost the entire plant is in a non-corrosive all-plastic design.
  14. Maintenance does not require any primary sludge removal due to the aerated accumulation tank and separate sludge tank with automatic sludge removal.
  15. No anaerobic environment anywhere, hence no odour.
  16. A complete product, no need for additional extensions, lids, or assembly on site. Everything is included in the price without the need for additional extensions, covers, blower containers, timers, etc., as with other plants. Thanks to the optional inflow depth, it's already complete and ready from production.
  17. All internal technology can be easily removed, cleaned, or replaced.
  18. The structure is self-supporting even for variants with a tank for purified utility water or a sludge tank for up to 3 years of operation.