Travelling band screens

Brackett Green travelling band screens are designed to meet the expanding need for fine screening to capture solids that either clog conventional screens or bypass them entirely. Advanced fine screening technology for water intakes can extend the lifespan and reduce the maintenance of industrial, infrastructure, energy and resources plants.

These travelling band screens are designed for installation on raw water intakes where a continuous and efficient means of removing floating and suspended solids is required in order to protect pumps, heat exchangers and other critical equipment. Applications include screening fresh and sea water; intakes for power stations; pump protection at water treatment and desalination plants; refineries; petrochemical and LNG plants; industrial cooling water intakes; aluminium plants and steel works.

Fitted with mesh aperture sizes from 1.5 to 10 mm, the screens can be installed as a single system or as part of a two- or three-stage system. They have an endless revolving band of screening panels through which the water passes, rather than the filtration media being fixed in place. This constant renewal of the screening panels means they are continuously capable of performing fine filtration, rather than clogging up like many conventional fixed screens.

Debris collected on the travelling mesh panels is raised to deck level and removed by backwashing. Main chains, supported by two sprockets above deck, carry the screening band with drive being provided by an electric motor through a shaft-mounted reduction gear unit. Underwater, the main chains run in guide sections fitted with wearing strips located in a self-supporting fabricated frame.