Transcript City of Boulder Wastewater Treatment Facility

®
City
of
Boulder
(With apologies to George Lucas)
Utilizing Instrumentation Technology and SCADA
to Improve Solids Flow at the
CITY OF BOULDER
Presented By:
Leigh Rickert, Maintenance Supervisor
Scott Kennedy, Inst./Control Technician
Liquid Stream Flow
17.5 MGD Average
Headworks
CL2 &
Liquid
Stream
Effluent
NTF Tower
(20% of Flow)
Primary
Clarification
Trickling
Filters
Secondary
Clarification
Solids Contact
Solids Stream Flow
5 Dry Ton Per Day
Anaerobic
Digester
Complex
Gravity
Thickeners
Primary
Clarification
Secondary
Clarification
Solids Stream Flow
Anaerobic Digester Complex
Co-Generation
Two 1.25 MG Digesters
Solids Processing by Centrifuges
Two 0.5 MG Thickened Biosolids Storage Tanks
Semi-Dewatered Biosolids Recycling by
Land Application
CITY OF BOULDER
Gravity Thickener / Primary Pump Station
Rotary Lobe
Pump
Gravity Thickener
#2
Doppler Sensor
Heads
Doppler Flow
Meter
Primary Pump SCADA Monitoring / Control
2001
Digester Feed vs. Blanket Level
500,000
450,000
9.0
8.0
7.0
0.0
Digester Feed
11/30
100,000
10/31
1.0
9/30
150,000
8/31
2.0
7/31
200,000
6/30
3.0
5/31
250,000
4/30
4.0
3/31
300,000
2/28
6.0
5.0
1/31
400,000
350,000
Thickener Blanket Level
CITY OF BOULDER
Average Thickener
Blanket Level In Feet
Date of Sensor
Installation
12/31
Weekly Total of Gallons
Fed To Digester
550,000
9.0
550,000
8.0
500,000
7.0
450,000
6.0
400,000
5.0
350,000
4.0
300,000
3.0
250,000
Digester Feed
11/30
10/30
9/30
8/30
7/30
6/30
0.0
5/30
100,000
4/30
1.0
3/30
150,000
2/28
2.0
1/30
200,000
Thickener Blanket Level
Average Thickener Blanket Level In
Feet
600,000
12/30
Weekly Total Gallons Fed To
Digester
2002
Digester Feed vs. Blanket Level
Gravity Thickener #1
Blanket Level Sensor
4-Channel Controller
Transducer Head
CITY OF BOULDER
Thickened Transfer Sludge Flow
Gravity Thickeners
Transfer Pump Station
Transfer Pump SCADA Control Screen
Gravity Thickener SCADA Monitoring
Gravity Thickener Control Screen
Process Control System Hardware
GE Fanuc Automation
90/70 PLC, w/Ethernet Comm.
GENIUS I/O System
CITY OF BOULDER
Process Control System SCADA Software
Intellution FIX32 ver. 7.0
HMI/SCADA Developer
- Future Plan Calls for Upgrade
to iFix (Fix Dynamics)
GE Fanuc Automation
Cimplicity Machine Edition
Ladder Logic Programming
Professional Edition, ver.3.0
Questions?
Comments?
Thanks You!
City of Boulder
Wastewater Treatment Facility
4049 75th Street
Boulder, CO 80301
303-413-7340
Thank you, Steamboat!