03 The 4 Cleaning Steps 1st Cleaning Step The Rainwater Filter The 1st cleaning step of the system is the filter The rainwater flows from the roof via the downpipe into the filter this is where dirt is separated from the water The cleaned water is routed to the tank while the dirt is either flushed to the sewer with a small volume of rainwater or collected in the filter basket Rainwater filters from 3P in many cases have durable stainless steel inserts that can be easily removed and cleaned for maintenance Various operating principles and connection options support their use in a wide variety of installation configurations 2nd Cleaning Step Calmed Inlet The water is typically stored in dark and cool conditions in a tank installed underground This is also where the 2nd cleaning step takes place fine dirt particles denser than water slowly settle to the bottom The Calmed Inlet ensures rainwater does not disturb the sediment layer At the same time incoming rainwater adds oxygen to the lower part of the stored water This oxygen prevents anaerobic conditions developing in the tank The water remains fresh 3rd Cleaning Step The Overflow Siphon Dirt particles which are lighter than water e g pollen slowly rise and float on the water surface The specially formed Overflow Siphon with skimmer effect removes this floating layer when the tank overflows Regularly allowing the tank to overflow is important for consistently high water quality preventing fouling the water The floating layer could seal the water surface to such a degree that oxygen cannot enter the water resulting in anaerobic conditions developing 4th Cleaning Step The Floating Pump Intake Fixture The cleanest water can be abstracted slightly below the water surface via the floating intake A floating ball keeps the intake which is also equipped with a filter as an additional safety slightly below the water surface where the cleanest water in the tank is located The Floating Intake is generally equipped with a check valve NRV

Vorschau 3P Trade Catalogue 2018 Seite 3
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