Membrane blocking by barium sulfate
During the first two years of operation of an ultrafiltration system for drinking water despite regular backwashing deposites occured on the membrane surface, which reduced the permeability of the membranes to only 25 L / m × h × bar.
Intensive investigations on the membranes have shown that the deposits essentially contain barium sulphate and also some strontium sulphate in smaller amounts.
By cleaning with Memobrane 35 and Activator the deposit on the membranes could be removed completely. The permeability of the membranes after the cleaning was> 500 L / m × h × bar.
Source: Stadtwerke Feuchtwangen