The treatment process is conducted in two stages. The sedimentation process of mineral suspension (sand, mud) takes place in the sludge chamber. The storm water is transported to the separator following its pre-treatment in the integrated primary settling tank. The physical process of adsorption and coalescence is used in the separation chamber in addition to the gravity force. Oil molecules accumulate on the surface of multi-stream parallel distributed plate-fin sections (adsorption), where they merge into bigger agglomerates (coalescence) and migrate in the lower side of plate-fin sections towards the surface forming the oil film.
The standard separators are equipped with the closing systems, which upon collecting maximum volume of light liquid in the separator automatically close its outflow thus preventing the contamination of the receiver tank.
- Measuring probes for the amount of suspensions and oil substances accumulated in the separator with the sound alarm system and/or light alarm system (NT-SET, NT-OS)
- Installations emptying the system facilitating the cleaning and maintenance of the separators (NT-U)
- Emergency shut-off on the inflow to the separator
- Systems for the intensity of the flow including the flow controller
- Check valve at the outlet of the device.