Hickory Log Creek Reservoir
COBB COUNTY-MARIETTA WATER AUTHORITY | COM 1.0
Hugh A. Wyckoff Water Treatment Plant
James E. Quarles Water Treatment Plant
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PLANT 1
Flow Split
Flocculation Basins
Raw Water Rate of Flow Controller
Sedimentation Basins
PLANT 2
Filters
QUARLES 1
SHARED BETWEEN BOTH PLANTS
Filter Weir Box
OPERATIONS
High Service Pump Station
Rapid Mix
Laboratory
Resources
Operations
Engineering
& Admin
Safety
Maintenance
Security
Transmissions
2009
Jordan, Jones, & Goulding
Plant 1 Replacement
360 TOUR
RESOURCES
2000
Volume 2
Flocculation and Sedimentation Basin and Filter Complex Improvements, Underdrain pump station, Transfer Pump Station Improvements, Clearwell Improvements, Chemical Building Modifications
TRAINING
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
MNT 1
MNT 2
MNT 5
MAINTENANCE
MNT 4
MTN 6
MNT 3
TRANS 5
TRANSMISSION
TRANS 2
TRANS 4
TRANS 3
TRANS 1
TRANS 6
LAB 1
LAB 4
LAB 6
LAB 3
LAB 5
LAB 2
LABORATORY
SAFETY 1
SAFE 2
SAFETY
SAFE 6
SAFE 5
SAFE 4
SAFE 3
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GLOSSARY
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
Pump Station
Equipment Name
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OPEN VENDOR O&M MANUAL
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
FLOCCULATION
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
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)
SEDIMENTATION
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
Design Criteria
None
To provide enough contact time for the precipitates formed from chemical coagulation to grow large enough to be removed by
gravity settling.
• Flocculation Basin Flow Setpoint
• Chemical dose at Rapid Mix
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.
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
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
SEDIMENTATION
Vendor Training Videos
Various
X
Training Material
Training videos for Plant 2 Expansion Project
Quarles Plant 1 Replacement Vendor Training Materials
Quarles Plant 1 Replacement Process Training Materials
2020
Vendor Training Videos
Quarles Plant 1 Replacement Vendor Training Materials
Quarles Plant 1 Replacement Process Training Materials
SECURITY 1
SEC 5
SEC 4
SEC 2
SEC 6
SECURITY
SEC 3
ENG 6
ENG 1
ENG 4
ENG 2
ENG 3
ENG 5
ENGINEERING & ADMIN
HICKORY
WYCKOFF
QUARLES 2
