Description and operation

To ensure perfect operation and long working life of treatment systems with membrane bioreactors (MBR), which have been a feature of municipal and industrial wastewater treatment plants for almost thirty years, adequate pre-treatment is required, with fine screening of the wastewater.

Studies carried out on several MBR plants have shown that with efficient screening systems the plants were operating at full efficiency also after more than 10 years of service.

Inefficient pre-treatment of wastewater in MBR plants can lead to:

  1. Accumulation of wastes, hair, fabric, fibres, etc.
  2. High risk of sludge accumulation
  3. Damage to membranes

The cost of a fine screening system is less than 3% of the total cost of an MBR plant.

Definitive Ecology offers several families of fine screens for MBR plant applications, all having:

  • 1 or 2 mm perforated plate screen, according to requirements
  • Washing of the screen by means of medium pressure water jets