Hach-Lange RTC112 SD-Module - Manual (Page 30)

30
Parameterization and operation
4.7 CONTROL PARAMETER
4.7.1 FACTOR POLYMER DOSING
Required specific polymer dosing [g/kg]. This parameter
determines how many grams of polymer per kilogram of TSS are
fed by the system.
4.7.2 POLYMER CONCENTRATION
Polymer concentration [g/L] fed via the polymer pump.
4.7.3 MANUAL POLYMER DOSING
The RTC outputs the polymer dosing rate [L/h] if
• FEED FLOW CONTROL is activated
• No open-loop control mode ( section 4.6.1 to section 4.6.3 ) is
activated
• The TSS measurement from the influent reports an error, or
• The flow measurement from the influent reports an error.
4.7.4 MANUAL FEED FLOW
The RTC outputs the feed flow rate [m 3 /h] if
• POLYMER DOSING CONTROL is activated
• No open-loop control mode ( section 4.6.1 to section 4.6.3 ) is
activated
• The TSS measurement at the inlet reports an error, or
• The flow measurement from the influent reports an error.
4.7.5 MAX DECREASE CLOSED L
This value defines the maximum decrease of the specific polymer
dosing rate FACTOR POLYMER DOSING [g/kg] if
CLOSED-LOOP EFFLUENT CONTROL is selected.
4.7.6 MAX INCREASE CLOSED L
This value defines the maximum increase of the specific polymer
dosing rate FACTOR POLYMER DOSING [g/kg] if
CLOSED-LOOP EFFLUENT CONTROL is selected.
4.7.7 SET-POINT TSS
Required setpoint of the TSS concentration in the dewatered
sludge.
Note: · This parameter is only considered if CLOSED-LOOP EFFLUENT
CONTROL (
section 4.6.3 ) is activated.