- Home
- Companies
- nrw Anlagentechnik GmbH
- Products
- NRW - Coarse Screen
NRW - Coarse Screen
Coarse screens for coarse material separation in industry, waste water from vacuum trucks, slaughterhouse, 1st cleaning stage in waste oil treatment, washing plants for military vehicles.
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.