APPARATUS AND PROCESS FOR MONITORING AND CONTROLLING THE FREEDOM FROM SUSPENDED PARTICLES OF THE OVERFLOW LIQUID FROM SETTLING TANKS IN MECHNAICAL SEPARATION PROCESSES FOR LIQUID-SOLID PHASES

摘要

1519838 Monitoring a separation process DEUTSCHE GOLD-UND SILBER SCHEIDEANSTALT 31 Oct 1975 [27 Nov 1974] 45237/75 Heading G1A In a separation apparatus using sedimentation of suspended matter, liquid flowing through outlet 6, connected to a settling tank 2 is allowed to fall freely into a funnel 11. The free falling liquid is monitored by a light source 4 - detector 5 arrangement. When the detector 5 senses that the liquid is not clear, indicating suspended matter has reached the upper part of the tank, the change in detector output actuates a sludge pump 8. This pumps away some of the sediment that has collected at the bottom of the settling tank 2. The liquid to be separated is introduced into the tank 2 through a feed pipe 9 at a flow-rate slow enough not to hinder the sedimentation process.