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Chapter 7 Process Control Strategies Jack Geisenhoff, P.E., PMP
Mike Abbott, P.E.
Jeff Coulson, P. Eng, PMP
Richard S. Haugh, P.E.
Robert D. Hill, Ph.D, P.E.
Оглавление1.0 OBJECTIVE OF AUTOMATIC PROCESS CONTROL
4.1 On–Off Control Versus Modulating Control
4.2 Open-Loop Versus Closed-Loop Control
4.3 Feed-Forward Versus Feedback Control
4.5 Proportional–Integral–Derivative Control
4.9 Artificial Neural Networks
4.9.1 Artificial Neural Network Models
4.9.2 Artificial Neural Network Models Used for Process Modeling
4.9.3 Artificial Neural Network Models Used for Process Control
4.10.2 Most-Open Valve Control
5.0 PUMPING AND FLOW CONTROL STRATEGIES
5.1 Process Description
5.4.1 Well Pumping—Constant-Speed Pumps
5.4.2 Well Pumping—Variable-Speed Pumps
5.4.4 Flow Splitting with Valves or Gates
6.0 SCREENING, GRIT REMOVAL, AND CONVEYANCE CONTROL STRATEGIES
6.1 Process Description
6.4.1 Bar Screen Velocity Control
6.4.2 Bar Screen Cleaning Control
6.4.3 Grit Settling Velocity Control
6.4.5 Conveyance System Control
7.0 PRIMARY SLUDGE AND SCUM CONTROL STRATEGIES
7.1 Process Description
7.4.1 Sludge Removal Control—Dedicated Pump
7.4.2 Sludge Removal Control—Valve to Common Pump
7.4.3 Scum Trough Operation Control
8.0 ACTIVATED SLUDGE SYSTEM CONTROL STRATEGIES
8.1 Dissolved Oxygen Control
8.1.1 Process Description
8.3.1 Process Description
8.4 Activated Sludge Clarifier Blanket Level Control
8.4.1 Process Description
8.5.1 Process Description
9.1 Disinfection Control
9.1.4.1 Feed-Forward Flow Proportioning
9.1.4.2 Simple Residual Feedback Control
9.1.4.3 Flow and Residual Control
9.2.5 Difficult-to-Measure Process Variable
9.2.8 Feedback and Compound Control
9.2.10 Dechlorinated Final Effluent Residual Measurement
10.1 Gravity Thickening Control Strategies
10.1.1 Process Description
10.1.4.1 Sludge Removal Flow Control
10.1.4.2 Sludge Blanket Control
10.1.4.3 Solids Concentration Control
10.2 Dissolved Air Floatation Control Strategies
10.2.1 Process Description
10.2.2.1 Dissolved Air Floatation Sludge Thickener
10.2.2.2 Dissolved Air Floatation Sludge Well
10.2.3.1 Dissolved Air Floatation Sludge Thickener
10.2.3.2 Dissolved Air Floatation Sludge Well
10.2.4.1 Dissolved Air Floatation Air-to-Solids Ratio Control
10.2.4.2 Dissolved Air Floatation Solids Retention Time Control
10.2.4.3 Sludge Blanket Control
10.2.4.5 Thickened Dissolved Air Floatation Sludge Pump Control
10.3 Gravity Belt Control Strategies
10.3.1 Process Description
10.3.2.1 Gravity Belt Sludge Thickener
10.3.2.2 Gravity Belt Sludge Well
10.3.3.1 Gravity Belt Sludge Thickener
10.3.3.2 Gravity Belt Sludge Well
11.1 Centrifuge Control Strategies
11.1.1 Process Description
11.2 Belt Press Control Strategies
11.2.1 Process Description
12.0 ANAEROBIC DIGESTION CONTROL
12.1 Digester Feed and Level Control Strategies
12.1.1 Process Description
12.2 Digester Temperature Control Strategies
12.2.1 Process Description
12.3 Digester Gas Withdrawal Control Strategies
12.3.1 Process Description
13.1 Incineration Oxygen Control Strategies
13.1.1 Multiple-Hearth Incinerators
13.1.1.1 Process Description
13.1.2.1 Process Description
13.2 Incineration Temperature Control Strategies
13.2.1 Multiple-Hearth Incinerators
13.2.1.1 Process Description
13.2.2.1 Process Description
13.3 Incineration Pressure Control Strategies
13.3.1 Process Description
13.4 Offgas Wet Scrubber Control Strategies
13.4.1 Process Description
13.5 Flue Gas Carbon Feed and Baghouse Control Strategies
13.5.1 Process Description
13.6 Flue Gas Electrostatic Precipitator Control Strategies
13.6.1 Process Description
14.0 ENERGY MANAGEMENT STRATEGIES
14.1 Real-Time Power Monitoring
