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NRW - Fine Screen
Conventional municipal or industrial wastewater treatment plant, contaminant removal and to protect downstream equipment.Opening 2.0 mm – 4.0 mm.
Screenings are the substances retained by a screen or sieve in a screening plant or waste water treatment plant.
Screenings consist primarily of organic substances and mineral components. Unfortunately, there are always contaminants in the wastewater for which actually a different way of disposal is supposed. For example, hygiene articles or small packaging.
The nature and the proportion of the usually foul-smelling screenings are important parameters for professional planning and the design of an efficient screening plant. For example, at the sewage treatment plant.
A good piece of mechanical waste water treatment
The screen in a wastewater treatment plant usually represents the first purification stage. Here the coarse components, the so-called screenings, are filtered out. The geometry of the opening determines what the screen filters out. At the same time, the screen protects downstream treatment stages – for example membrane treatment plants – from coarser sediment, floating, suspended and other impurities. In terms of the process, the screen represents a part of the mechanical wastewater treatment in the wastewater treatment plant.
The nrw contec screen
Based on the only low flow velocity and its generously designed screen surface, a nrw contec screen offers particularly good solids retention.
There is no need for a separate or particularly time-consuming cleaning process: during screening, the nrw contec screen virtually cleans itself all the time.
For increased demands on solids retention, a screen is the right choice. Also in smaller rooms.
For screening out disposable products (impurities) in municipal wastewater.
Examples:
- Raw sewage
- Clarification
- Small sewage treatment plants
- Direct discharge
- Sedimentation tank
- Sludge screening
- Rain overflows
For the pre-treatment of waste water before membrane plants (MBR / membrane bioreactors). Or so that MBR plants are not damaged. The use of the nrw contec combination screen is also possible here.
Examples:
- Untreated raw sewage
- Pretreated waste water
For the pre-cleaning of industrial water.
Examples:
- For mechanical pre-treatment of industrial waste water before discharge into the receiving water or into the plant’s own waste water treatment plant.
- For the treatment of industrial process or cooling water for reuse.
- Removal of contaminants to protect downstream equipment.
- Separation of valuable materials in the recycling industry.