Application of Process Simulators and CFD to Optimize

Application of Process Simulators and CFD to Optimize Process Capacity of WRRFs November 13, 2017

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BC Smart. Art Color Sequence Brown and Caldwell Blue Green 0 158 209 118 176 67 Light Gray 192 202 199 Orange Gray Purple 245 130 32 149 157 147 51 42 134 3

Name of Presentation or Other Text Subsection Title or Presenters Name Brown and Caldwell 4

Modeling Platforms • • in. CTRL SIMBA# Enviro. Sim Bio. Win • • • Dynamita SUMO Hydromantis GPS-X MIKE WEST FLOW Science FLOW-3 D Hydraulic Modeling ? ? ? 2 Dc and 2 Dr ANSYS Fluent Brown and Caldwell 5

Case Study #1: Lynchburg, VA Date or speaker or subtitle

Intro Sentence Before Bullets To change the slide layout (grid) or to change the color of the top bar: • Select the slide thumbnail along the left side. • Right Click and go to “Layout” • Choose the corresponding color and/or layout to apply to the slide. • Avoid using the Design tab to change layouts or color themes, there is an application bug that causes Power. Point to crash. Brown and Caldwell 7

Case Study #2: HRSD, Williamsburg, VA Date or speaker or subtitle

Process Flow Diagram Brown and Caldwell 9

3. 5 g/L - 77 SVI 4. 0 g/L - 77 SVI 4. 5 g/L - 77 SVI 3. 5 g/L - 105 SVI 4. 0 g/L - 105 SVI 4. 5 g/L - 105 SVI Effluent Suspended Solids (mg/L) 60 50 40 30 20 10 0 0 200 400 600 800 1000 1200 1400 Time (min) Brown and Caldwell 10

• Can pass 55 MGD peak hour flow • Do not need to consider plant expansion as part of Regional Wet-weather Management Plan Brown and Caldwell 11

Case Study #3: Pueblo, CO SIMBA#

Process Flow Diagram Parameter Annual Median 95 th Percentile TP 1. 0 mg/L 2. 5 mg/L TIN 15 mg/L 20 mg/L

Existing Biological Reactor Configuration DO Probes NH 4 and NOx Probes

Existing DO Control Loops Proposed Av. N Control Loop

Av. N and DO Control Loops

Modeling Aeration Control Av. N Modeling Summary Parameters Eff. TIN Eff. TAN DO TP Annual Median 5. 2 2. 6 0. 4 0. 6 Max Day 10. 8 4. 9 0. 8 1. 6

Case Study #4: MWS, Nashville, TN Date or speaker or subtitle

Table Sample South Grit Facility Intermediate Screw Pumping Station Excess Flow Treatment North Grit Facility Tertiary Filters (abandoned) and South Chlorine Contact Tanks North Primary Clarifiers (6) South Secondary Clarifiers (6) North Secondary Clarifiers (8) Brown and Caldwell South Primary Clarifiers (13) Aeration Tanks(8) 19

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Secondary Clarifier Testing Brown and Caldwell | 8/2/2012 MODEL INPUTS - Sludge Settling Characteristics - Discrete Settling Fractions 21

Comparison of Baffling Alternatives WWF vane baffle No baffle WWF 5 x 10 chimney 5 x 5 conduit with 10” openings Higher surface vel and roll RAS RAS

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Fun new elements to incorporate in your slides Callout for emphasis Brown and Caldwell 24

Callout for emphasis

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