AOSTADKOMMANDE AV VAEXELVERKAN MELLAN EN VAETSKA OCH ETT FAST AEMNE.

摘要

In order to remove e.g. nitrate from water with a short contact time, the water is mixed with small particles of ionexchange resin in a tank (1), to form a suspension of a concentration of 1.25 to 5% w/w. m e particle mesh size is e.g. from 5.mu.m to 0.5 mm. The suspension is passed from the tank (1) and in the pipework, the nitrate content of the water is significantly reduced. The ion-exchange resin is returned to the tank (1) and can be recirculated on average about four times. A bleed of the suspension is taken from the tank (1), is regenerated, and is recycled to the tank (1).