James E. Quarles Water Treatment Plant | COM 1.0

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PLANT 1

Sedimentation Basins

Filters

PLANT 2

POINT AT IMAGES FOR LABELS & LINKS

Raw Water Rate of Flow Controller

Rapid Mix

Filter Weir Box

Flow Split

High Service Pump Station

Plant Processes

SHARED BETWEEN BOTH PLANTS

Flocculation Basins

O&M

James E. Quarles Water Treatment Plant | COM 1.0

ELECTRICAL

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RESOURCES

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PLANTS

SAFETY

SAFETY

HOME

PLANTS

RESOURCES

O&M

ELECTRICAL

CONTROL

2009

Jordan, Jones, & Goulding

Plant 1 Replacement

360 TOUR   

2000

Volume 2

Flocculation and Sedimentation Basin and Filter Complex Improvements, Underdrain pump station, Transfer Pump Station Improvements, Clearwell Improvements, Chemical Building Modifications

TRAINING   

Resources

2017

Volume 3

Flocculation and Sedimentation and Filter Complex Rehabilitation, Underdrain Pump Station, Clearwell No.2 Modifications, Washwater Clarifier No. 1, Washwater Pump Station No. 1, Washwater Pump Station No. 2, Recycle Tank Modifications, Washwater Splitter Box, Sludge Pump Station No. 1 and 2

64 to 87 MGD Expansion Plant 2 - Phase 2 Reliability Improvements

NAVIS MODEL   

Hazen and Sawyer

64 to 87 MGD Expansion Plant 2 - Phase 1 Expansion

Plant 2 Rehabilitation

RAS Water Meter Vault No. 3, Rapid Mix Basins, Plant 2 Flocculation and sedimentation basins, Filter complex, Transfer Pump Station, Clearwell No. 1, Chemical Building Modification, Recycle Tanks Pump Station, Thickener Splitter Box, Sludge Thickener No. 4, Sludge Pump Station No. 2, Filter Press Building

2005

REPORTS   

Drawings Index

DRAWINGS   

Volume 1

64 to 87 MGD Expansion Plant 2 - Phase 1 Expansion

Volume 1

Volume 2

Volume 3

64 to 87 MGD Expansion Plant 2 - Phase 2 Reliability Improvements

Plant 2 Rehabilitation

Plant 1 Replacement

O&M BTN   

Operations & Maintenance

O&M BTN 

ELEC BTN   

Electrical

ELEC BTN  

I&C BTN   

Instrumentation & Controls

I&C BTN  

SAFETY 1   

SAFE 2   

SAFE 6   

SAFE 5   

Safety

SAFE 4   

SAFE 3   

GLOSSARY

ABCDEFGHIJKLMNOPQRSTUVWXYZ

Baffles Baffles are installed in the flocculation basins to achieve the required velocity gradient profile through each basin. The baffles are made from stainless steel and are installed in an over/under arrangement in serpentine concrete flocculation channels. The baffle plates have been designed such that plates may be removed to increase the flow through the basins while maintaining the same maximum headloss calculated at the design flow. OPEN VENDOR O&M MANUAL

EQUIPMENT   

Flow Control  

Plant 1: Flocculation

Pump Station  

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PLANT PROCESSES

Flocculation  

Weir Box  

PHOTOS   

24-inch Butterfly Valve The 24” butterfly valves are used to isolate the flocculation channels from the sedimentation basins so they can be drained and cleaned independent of the sedimentation basins. Four of these valves are installed on the upstream wall of each flocculation basin and the valves are operated manually. TEST RESULTS

OPERATIONS   

Spitter Box  

Filter  

Equipment List | Vendor O&M Manuals

Rapid Mix  

Sedimentation  

Photos

Hazen and Sawyer

Plant 2 Expansion Basis of Design Report

1998

Quarles Plant 1 Replacement Basis of Design Report

1985

Plant 2 Expansion Basis of Design Report

Whodunnit Co.

Snazzy, Inc.

Solids Handling Business Case Evaluation

Reports Index

Special Sampling Report

Evaluating life cycle costs of several different solids handling options

2016

Jordan, Jones & Goulding

Polymer feed optimization sampling and analysis

Special Sampling Report

Plant 2 Expansion Basis of Design Report

Quarles Plant 1 Replacement Basis of Design Report

Solids Handling Business Case Evaluation

X

Training videos for Plant 2 Expansion Project

Vendor Training Videos

Training Material

2020

Quarles Plant 1 Replacement Vendor Training Materials

Various

Quarles Plant 1 Replacement Process Training Materials

Vendor Training Videos

Quarles Plant 1 Replacement Vendor Training Materials

Quarles Plant 1 Replacement Process Training Materials

Settled water effluent channel is being monitored only. A high level here would lead to a high level in the coagulated water splitter box which would close the raw water rate of flow controller.

Interlocks

N/A

Recommended Mode The Sedimentation basins sludge collection system operates in the automatic mode. Initiation of solids cycle collection will be based on a real-time clock. Timer settings will be locally operator adjustable and SCADA adjustable.

• Max Flow - 11 mgd • Theoretical Detention Time - ≥ 2 hours • Type - inclined plate settlers • Plate angle - 55o • Plate settlers surface loading rate - 0.24 gpm/ft2 • Weir loading rate - 20,000 gpd/ft weir • Settled water turbidity - < 1.0 NTU (average RW turbidity ≤ 10 NTU); < 2.0 NTU (average RW turbidity > 10 NTU)

Alternate Mode Most of the equipment in the sludge collection system can only be operated manually through the HMI.  Solids collector drive mechanisms and valves can be manually controlled from the HMI.

Process Control Parameter

Process Overview

• Settled water turbidity • Sludge waste rate: sludge collector time sequence setpoints

To remove chemical precipitates and floc formed during the flocculation step.

• Flow • Particle size  • Temperature 

Objective

Operation

Variables Affecting  Performance

Plant 1: Sedimentation

Design Criteria

None

The following parameters will be met at max month conditions: • Max Flow - 11 mgd • Theoretical Detention Time - 30 min • Detention time per stage - 7.5 min • Head loss - 3 feet • Stage 1 G-Value - 83 sec-1 • Stage 1 G-Value - 52 sec-1 • Stage 1 G-Value - 24 sec-1 • Stage 1 G-Value – 6.4 sec-1 • pH – 6.0 to 6.5 • Average Lime dose - 1.7 mg/L  • Average Alum dose - 10 mg/L • Chlorine dioxide dose - ≤ 0.5 mg/L

Alternate Mode The Flocculation basin trains can be controlled in the automatic mode. The weir gates can be controlled via a future automatic mode. In this mode the weir gates would be opened and closed to maintain a flow setpoint. A Local Manual mode also exists by which the weir gates are controlled locally at the actuator. The weir gates can also be manually opened and closed via a handwheel.

• Flow • pH • Streaming current

To provide enough contact time for the precipitates formed from chemical coagulation to grow large enough to be removed by gravity settling.

Recommended Mode The Flocculation basin trains operate in the Remote Manual mode. In Remote Manual mode the weir gates are manually opened and closed from the HMI.

• Flocculation Basin Flow Setpoint • Chemical dose at Rapid Mix

Particle Counters Each sedimentation basin has a particle counter providing online, real time continuous measurement of the settled water particle count. It is used in conjunction with the filter water particle counters to calculate the particle removal. The particle counters can sample between 1 second and 24 hours and detect particles within 2 to 750 microns. Each counter communicates with SCADA via Modbus TCP. OPEN VENDOR O&M MANUAL

Hoseless Solid Collection System The hoseless sludge collection system is a series of rigid scrapers and pipes on a cable system that remove settled solids from the bottom of the sedimentation basins. There is a hoseless sludge collector at the bottom of each sedimentation basin to increase the amount of sludge removal from the basins OPEN VENDOR O&M MANUAL