SCREENS

Mechanical or non-mechanical screening is normally used as a preliminary treatment prior to other processes. However, depending on the type of wastewater and the constraints for discharge, screening maybe all that is required. Screening is used for the separation of gross solids, which may cause blockages in pumps or pipelines and to reduce the solids impact on further treatment processes. Most wastewater emanating from food production would be screened down to 1mm, wastewater being discharged from a laundry would be screened down to 0.25mm for the separation of cotton fines.
 
The screen would be sized to compliment the capacity of the feed pumps. Screenings being discharged from the screen are normally gravity fed into a suitable receptacle prior to disposal off site. Depending on the origin of the screenings, they maybe unpleasant and give rise to odours and should be disposed of as soon as possible. Also, it may be necessary to cover in the screenings receptacle to prevent vermin or birds being attracted to the waste. Screens can be enclosed to offer protection from adverse weather conditions and can also be fitted with hot or cold-water backwash sprays.

Our experience over the years has led us to select components that are well made and will give years of trouble-free reliability.

All our fabrications and ancillary working parts are made from either stainless steel or mild steel, whilst pipework, valves and flanges are often from durable plastic materials.