Hach-Lange RTC112 SD-Module - Manual (Page 14)

14
General information
Figure 3 Adjustment of the polymer dosing rate to the influent TSS load
1 Digester 9 Polymer supply
2 Static thickener 10 Pump for open-loop control of the polymer dosing rate
3 Measurement of the feed flow rate 11 Mechanical sludge dewatering device
4 TSS measurement from the influent 12 Dewatered sludge
5 Open-loop control of the polymer dosing rate (feed flow
rate measurement value) 13 Centrate
6 Open-loop control of the polymer dosing rate (influent
TSS concentration measurement value) 14 Option: Measurement of the TSS concentration in the
centrate
7 RTC112 SD-Module 15 Option: Measurement of the TSS concentration in the
dewatered sludge instead of centrate
8 Pump for the feed flow rate (constant)