BUILDING WHOLE PLANT MODELS - COURSE CONTENT

Modeling as a Design and Optimization Tool

• Simulation objectives

BioWin Familiarization

• The interface
• Elements
• Physical and operational data
• Influent loading
• Model options

Building a Configuration

• Primary settling tanks
• 3-pass activated sludge with FSTs
• Steady state simulations
• Setting up tables and charts

Upgrade for Nutrient Removal

• Unaerated reactors and internal recycles
• Factors impacting BNR
• N and P removal interactions
• SRT and sludge mass distribution

Wastewater Characteristics

• COD fractionation
• TKN fractionation
• Measuring WWCs

BioWin Examples

• Examples of different configurations
• MBRs, SBRs, oxidation ditch, etc.

BNR Dynamic Performance

• Diurnal influent loading
• Running dynamic simulations
• Time-series charts
• Temperature and nitrification performance

Modeling of Diffused Aeration Systems

• Oxygen Transfer Parameters
• SOTE Plots
• Diffuser Density,

Aeration Simulation

• Air flow
• Local aeration parameters
• DO sag
• BioWin Controller Module (Demonstration) On/off aeration control
• PI Control

Secondary Clarifiers

• Sludge settleability measures
• Settler modeling

Modeling Secondary Clarifiers

• FST solids profile
• State point analysis (SPA) diagram
• SLR and SOR
• RAS flow

Solids Treatment Train

• Sludge thickening
• Anaerobic digestion
• Return streams

Anaerobic Digestion

• Glucose and gas production
• State variable input
• Combined primary and waste sludge
• Adjusting VSS destruction
• Anaerobic Digestion III
• Primary sludge fermentation

Struvite Precipitation

• Struvite, HDP, HAP
• In-digester and post-digester formation

pH Modeling

• Aerobic digestion of WAS
• Lime addition for pH control
• On/off aeration

BioWin Controller Module

• Aeration control
• WERF wastewater characterization system
• Ditch recirculation rate
• Surface aerators
• BNR in oxidation ditches
• SND – simultaneous nitrification denitrification

SBR

• WERF wastewater characterization system

Oxidation Ditch Systems

• Ditch recirculation rate
• Surface aerators
• BNR in oxidation ditches
• SND – simultaneous nitrification denitrification