Rock Creek Maintains Optimal DO Levels to Reduce Energy
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November 2007 • WWDmag.com • WATER & WASTES DIGEST
®
PIPELINE PRODUCTS Waterworks Tools for the Professional
Serving the Waterworks Industry for 25 Years! POLYETHYLENE AIR/VAC ENCLOSURES
PROBLEMSOLVER
By Bob Dabkowski
Rock Creek Maintains Optimal DO Levels to Reduce Energy Consumption Dissolved probes use luminescence technology to continuously monitor DO levels and maintain energy-efficient blower operations
W
hen the Rock Creek Public Sewer District wastewater treatment plant (WWTP) first went online in 2004, operators at the facility manually controlled the three 100-hp blowers that aerate the
plant’s four 1.2-million gal per day (mgd) sequencing batch reactors (SBRs). Since then, blower operation has been automated, using new sensor technology that continuously monitors and controls dissolved oxygen
NEW!
(DO) levels in the reactors. The result has been a significant drop in energy consumption required for
VCAS-1830 & VCAS-1424
aeration, providing more than $10,000 annual cost savings for the plant.
WATERWORKS TOOLS PIPE SUPPORTS STEM EXTENSIONS VALVE ENCLOSURES
The 4.8-mgd WWTP can continuously process influent because the SBR technology incorporates an intermittent cycle extended aeration system (ICEAS). The ICEAS process eliminates the need to divert flow from the basin during settling and decanting phases. Instead, the time-based control system provides equal loading and flow to all basins. When the plant first began operations, blower operation was strictly manual. “Air on, air off,” said Don Daniel, plant operations manager.
DISTRIBUTOR INQUIRIES WELCOME SALES REP TERRITORIES AVAILABLE
PIPELINE PRODUCTS, INC.
800-998-1079 www.pipelineproducts.com
UV 254nm ORGANIC TESTING new A technologically superior and affordable continuous UV 254nm organic testing monitor.
WITH THE INNOVATIVE
•
Invaluable for any application that requires the analysis of organics
•
Use as a practical alternative to TOC, DOC, BOD or COD testing
Portable UV 254nm testing anywhere, anytime.
Professional Design Support and Trusted Shelter Experience
Professional Design and Engineering Support, Including Stamped Plans and State Approvals
Lightweight, Design Flexible Shelters, Pre-Assembled around an Industrial, galvanized steel framework
Uncompromising Quality and Up to Ten Year Warranty
Complete Equipment Integration
Built to YOUR size requirements, unlimited options
Exact Delivery Dates
APPLICATIONS: Water Control, Pump Houses, Lift Stations, Electronic and Monitoring Equipment Houses
Your Partner for P R O V I D I N G R E A L O R G A N I C T E S T I N G S O LU T I O N S For more information visit our website: www.TrachteUSA.com/Buildings or Call Laura @ ext. 246 or email: [email protected]
Write in 740
Building & Shelter Solutions
Write in 739
800-837-5707
TIME FOR A NEW SIZE
Write in 720
With the largest expansion in our 102 year history, we’re adding substantial manufacturing space to reduce valve lead times, increase inventory levels, and better serve our customers.
AWWA A Butterflyy Valvess too 168” Airr & Vacuum m Valvess too 24” Checkk Valvess upp too 72” andd lotss andd lotss more... Write in 744
1-800-247-VALV www.crispinvalve.com Valves Since 1905
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WATER & WASTES DIGEST • WWDmag.com • November 2007
But with this method, the DO levels would often reach 6 to 7 mg/L—much higher than necessary. “It was a waste of money,” Daniel said. “The blowers are the biggest power consumers at the plant. We were running our DO levels high to play it safe, but we needed to operate our blowers more efficiently.”
Optimizing DO control The staff began evaluating new technologies for DO monitoring and control that would allow them to maintain optimal DO concentrations while reducing operational costs. After contacting other plants for recommendations and taking a close look at the DO probes available on the market, they decided to install Hach luminescent dissolved oxygen (LDO) technology sensors in each reactor basin. Since the installation in July 2005, the LDO probes have had “zero problems,” according to Daniel. “Installation was very easy,” he said. “We followed the manufacturer’s instructions. The probes plug into Hach sc100 controllers mounted on the hand railing at the side of each tank.” The probes themselves are attached to PVC stanchions and submerged about 10 ft below the surface of the reactor basins. The basins are approximately 129 ft long, 60 ft wide and 20 ft deep. The staff determines the parameters for blower operation, and these are input at the sc100 controllers on the basins, or they can be adjusted from the plant SCADA. “We programmed all four controllers to turn the blowers on and off at a specific DO level,” Daniel said.
24/7 treatment cycles Average daily flows at the plant currently run about 2.4 mgd. The plant receives flow 24 hours a day, and the SBR system goes through the same cycle every four hours: a two-hour fill-and-aerate period, which is now controlled by the LDO probes; a onehour settling period; and a one-hour period of decanting.
High Maintenance.
Low Maintenance. Some things just require more maintenance than others. Tanks are no different. Choose Aquastore® and you get an exclusive glass-fused-to-steel bolted tank that is factory engineered to be the best. Say good-bye to high maintenance construction, cracks, painting, corrosion and rust. A low maintenance Aquastore is easily constructed, never needs repainting and delivers proven lifetime performance. With Aquastore, you can be assured you will get the highest engineered quality, service and product life in storage tanks. For more information visit www.aquastore.com or call 815-756-1551.
Tanks & Domes Glass Tanks with a Heart of Steel™
;d]_d[[h[Z IjehW][ FheZkYji 9ecfWdo )*+ >Whl[ijeh[ :h_l[ :[AWbX" ?B ,&''+ .'+#-+,#'++' mmm$WgkWijeh[$Yec © 2007. Aquastore is a registered trademark of Engineered Storage Products Company.
Write in 705
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Write in 742
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November 2007 • WWDmag.com • WATER & WASTES DIGEST
PROBLEMSOLVER The staff at Rock Creek WWTP has seen a significant reduction in energy costs after installing the LDO probes and Hach controllers. Automating aeration based on current DO levels has brought an estimated power cost savings of approximately $3,500 per year per basin, or a total of about $14,000 per year if all four basins are operated.
The
Loop-Power House +
Loop Leader -
Precision Digital Corp (800)343-1001 www.predig.com
TM
Series
Loop LeaderTM Series Process Indicator & Flow/Rate Totalizer
Indicators, Flow/Rate Totalizers, Flow Computers & Batch Controllers
•
Loop-Powered
•
Loop, AC, DC, or battery power
•
5-Digit LCD, 0.6” (15.2 mm) high
•
4-20 mA, 0-10 V, pulse, or RTD inputs
•
8-Digit Total display (Totalizer)
•
Rugged NEMA 4X enclosures
•
FM Type 4X, IP65 front
•
Field & panel mount enclosures
•
Custom engineering units & bargraph
•
15-point linearization
•
Square root & open channel flow
•
Non-resettable 11-digit Total (Totalizer)
•
Operating range -20/30 to 65°C
•
Operating range -30/40 to 80°C
Write in 721
Need more direction? With education targeted to your specific needs and organized into tracks such as Construction Site Stormwater Management and Inspector in Training you will maximize your training dollars.
The average biochemical oxygen demand (BOD) of the influent is 240 mg/L, which is reduced to 3 to 4 mg/L during the treatment cycle. The concentration of total suspended solids averages 200 mg/L coming into the plant and is reduced to 2.0 mg/L prior to the decanting phase. The water is also treated for concentrations of ammonia, phosphorous, total and organic nitrogen and pH. The clear water decanted from the top of the reactor is discharged into the Mississippi River. The LDO probes are set to maintain a concentration in each basin. However, the blowers are not shut down instantly when the DO reaches 4.0 mg/L. Instead, the probes continue tracking the reading for four full minutes. If the DO concentration falls below 4.0 mg/L at any time during the four-minute interval, the timing is reset and a new four-minute interval begins. “This helps ensure that the 4.0 mg/L reading represents actual conditions in the tank, not just a spot reading,” Daniel said. After four consecutive minutes with readings at the 4.0 mg/L level, the blower is turned off until the DO level drops to the predetermined trigger point.
Using LDO sensors
NEW FOR EC08 EC45: Regulatory Construction Compliance – What side of the silt fence are you on? Learn the protocol for engaging in local shareholding and decision making for state or federal mandated erosion control and stormwater quality regulations.
Register today at www.ieca.org/water
The World’s Largest Soil & Water Event February 18-22 • Expo February 19-21, 2008 Disney’s Coronado Springs Resort Write in 715
The LDO sensors offer specific advantages in accurate DO monitoring and control that membrane-type sensors do not provide. Because there is no membrane, there is no replacement due to fouling and no need to monitor and replace electrolyte solution. Unlike membrane sensors, the LDO probes do not consume oxygen in the process of measuring it, so measurement accuracy is improved. The LDO sensor is coated with a luminescent material that responds to blue
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WATER & WASTES DIGEST • WWDmag.com • November 2007
Energy cost reduction The staff at Rock Creek WWTP has seen a significant reduction in energy costs after installing the LDO probes and controllers. Automating aeration based on current DO levels has brought an estimated power cost savings of approximately $3,500 per year per basin (based on $0.03/kwh) or a total of about $14,000 per year if all four basins are operated. Since energy costs are generally the highest operational expenses at a WWTP, there can be a significant savings while the control of the process is improved as a result of optimum aeration. WWD Bob Dabkowski is wastewater specialist for Hach Co. and a licensed Colorado wastewater operator. He can be reached at 970/663-1377, ext. 2191 or by e-mail at [email protected].
TRAFFIC RATED EASY AND SAFE ONE-MAN OPERATION REDUCED INFILTRATION ANTI-THEFT/SECURITY
PAMREX 36"…
It’s BIG But It Ain’t Heavy!
Technically advanced. Simple to operate.
A simple solution for BIG access troubles.
© 2007 CertainTeed Corporation
light transmitted from a light-emitting diode. In response to sensing the blue light, the sensor emits a red light. The duration of time the red light is emitted corresponds to the amount of DO present in the water. As the DO concentration increases, the amount of time required for the red light emission decreases. The measurement process is continuous so that the risk of over-aeration is minimized. The operation of the sensor is unaffected by the presence of hydrogen sulfide, wastewater chemicals, heavy metals or fluctuations in pH levels. Maintenance has been minimal with the LDO sensors at the Rock Creek WWTP. “We follow the manufacturer’s recommendation for preventive maintenance,” Daniel said. “Once a month we pull them up and wipe them off. The probes have operated without problems since we put them in.” The Hach sc100 controllers continuously read the LDO probes and communicate via a 4- to 20-mA signal to the plant’s SCADA system. Each controller also has a built-in data logger that collects measurements at user-selectable intervals (1 to 15 minutes), along with calibration and verification points, alarm history and instrument setup changes for up to six months. Each LDO probe is connected to a separate controller. Although each controller is designed to receive data from up to two sensors simultaneously—and plug-and-play capabilities and multiple-parameter functionality will allow operators to easily switch probes between different processes—the plant elected to use one controller with each LDO probe to provide back-up in this critical process.
The new PAMREX 36" from CertainTeed Access Covers solves a number of BIG problems for municipalities, fitting oversized manholes at half the weight of traditional cast-iron alternatives. PAMREX 36" features an innovative hydraulic arm and twin-hinge design that make it easier and safer to raise and lower, allowing for one-man operation. Factor in long-term durability, resistance to inflow and infiltration, and security from unauthorized access, and you’ve got BIG answers to all of your BIG issues. PAMREX 36"—A lightweight solution to a weighty problem. For a complete listing of agents in your area, visit www.certainteed-pamcovers.com/pamrex, or call 877.351.3323 for more information. EXTERIOR: ROOFING • SIDING • WINDOWS • FENCE • RAILING • TRIM • DECKING • FOUNDATIONS • PIPE • ACCESS COVERS INTERIOR: INSULATION • WALLS • CEILINGS
Write in 706
Proven Biological Solutions ®
For more information, write in 1119 on this issue’s Reader Service Card.
HEADWORKS BIOLOGY SEPARATION MEMBRANE DISINFECTION BIOSOLIDS SYSTEMS
TM
The Meteor ActiveCell is a compact and flexible solution for biological wastewater treatment systems. Degremont Technologies-Infilco offers trusted, proven solutions for BOD Reduction, Nitrification and Total Nitrogen Removal. Contact us today!
• Upgrades to existing systems yield increased flow capacity and nutrient removal
LEARN MORE
• High nitrification rates at low suspended growth
For additional articles on this topic, visit: www.WWDmag.com/lm.cfm/wd110709
SRT and low temperatures • Ease of retrofit • Operates with both coarse and fine bubble systems
Infilco Degremont, Inc. 8007 Discovery Drive, Richmond, Virginia 23229 (800) 446-1150
Write in 714
www.infilcodegremont.com
11/6/07
2:51 PM
Page 36
36
November 2007 • WWDmag.com • WATER & WASTES DIGEST
®
PIPELINE PRODUCTS Waterworks Tools for the Professional
Serving the Waterworks Industry for 25 Years! POLYETHYLENE AIR/VAC ENCLOSURES
PROBLEMSOLVER
By Bob Dabkowski
Rock Creek Maintains Optimal DO Levels to Reduce Energy Consumption Dissolved probes use luminescence technology to continuously monitor DO levels and maintain energy-efficient blower operations
W
hen the Rock Creek Public Sewer District wastewater treatment plant (WWTP) first went online in 2004, operators at the facility manually controlled the three 100-hp blowers that aerate the
plant’s four 1.2-million gal per day (mgd) sequencing batch reactors (SBRs). Since then, blower operation has been automated, using new sensor technology that continuously monitors and controls dissolved oxygen
NEW!
(DO) levels in the reactors. The result has been a significant drop in energy consumption required for
VCAS-1830 & VCAS-1424
aeration, providing more than $10,000 annual cost savings for the plant.
WATERWORKS TOOLS PIPE SUPPORTS STEM EXTENSIONS VALVE ENCLOSURES
The 4.8-mgd WWTP can continuously process influent because the SBR technology incorporates an intermittent cycle extended aeration system (ICEAS). The ICEAS process eliminates the need to divert flow from the basin during settling and decanting phases. Instead, the time-based control system provides equal loading and flow to all basins. When the plant first began operations, blower operation was strictly manual. “Air on, air off,” said Don Daniel, plant operations manager.
DISTRIBUTOR INQUIRIES WELCOME SALES REP TERRITORIES AVAILABLE
PIPELINE PRODUCTS, INC.
800-998-1079 www.pipelineproducts.com
UV 254nm ORGANIC TESTING new A technologically superior and affordable continuous UV 254nm organic testing monitor.
WITH THE INNOVATIVE
•
Invaluable for any application that requires the analysis of organics
•
Use as a practical alternative to TOC, DOC, BOD or COD testing
Portable UV 254nm testing anywhere, anytime.
Professional Design Support and Trusted Shelter Experience
Professional Design and Engineering Support, Including Stamped Plans and State Approvals
Lightweight, Design Flexible Shelters, Pre-Assembled around an Industrial, galvanized steel framework
Uncompromising Quality and Up to Ten Year Warranty
Complete Equipment Integration
Built to YOUR size requirements, unlimited options
Exact Delivery Dates
APPLICATIONS: Water Control, Pump Houses, Lift Stations, Electronic and Monitoring Equipment Houses
Your Partner for P R O V I D I N G R E A L O R G A N I C T E S T I N G S O LU T I O N S For more information visit our website: www.TrachteUSA.com/Buildings or Call Laura @ ext. 246 or email: [email protected]
Write in 740
Building & Shelter Solutions
Write in 739
800-837-5707
TIME FOR A NEW SIZE
Write in 720
With the largest expansion in our 102 year history, we’re adding substantial manufacturing space to reduce valve lead times, increase inventory levels, and better serve our customers.
AWWA A Butterflyy Valvess too 168” Airr & Vacuum m Valvess too 24” Checkk Valvess upp too 72” andd lotss andd lotss more... Write in 744
1-800-247-VALV www.crispinvalve.com Valves Since 1905
34_ProblemSolver_1107.qxd
11/6/07
2:52 PM
Page 37
37
WATER & WASTES DIGEST • WWDmag.com • November 2007
But with this method, the DO levels would often reach 6 to 7 mg/L—much higher than necessary. “It was a waste of money,” Daniel said. “The blowers are the biggest power consumers at the plant. We were running our DO levels high to play it safe, but we needed to operate our blowers more efficiently.”
Optimizing DO control The staff began evaluating new technologies for DO monitoring and control that would allow them to maintain optimal DO concentrations while reducing operational costs. After contacting other plants for recommendations and taking a close look at the DO probes available on the market, they decided to install Hach luminescent dissolved oxygen (LDO) technology sensors in each reactor basin. Since the installation in July 2005, the LDO probes have had “zero problems,” according to Daniel. “Installation was very easy,” he said. “We followed the manufacturer’s instructions. The probes plug into Hach sc100 controllers mounted on the hand railing at the side of each tank.” The probes themselves are attached to PVC stanchions and submerged about 10 ft below the surface of the reactor basins. The basins are approximately 129 ft long, 60 ft wide and 20 ft deep. The staff determines the parameters for blower operation, and these are input at the sc100 controllers on the basins, or they can be adjusted from the plant SCADA. “We programmed all four controllers to turn the blowers on and off at a specific DO level,” Daniel said.
24/7 treatment cycles Average daily flows at the plant currently run about 2.4 mgd. The plant receives flow 24 hours a day, and the SBR system goes through the same cycle every four hours: a two-hour fill-and-aerate period, which is now controlled by the LDO probes; a onehour settling period; and a one-hour period of decanting.
High Maintenance.
Low Maintenance. Some things just require more maintenance than others. Tanks are no different. Choose Aquastore® and you get an exclusive glass-fused-to-steel bolted tank that is factory engineered to be the best. Say good-bye to high maintenance construction, cracks, painting, corrosion and rust. A low maintenance Aquastore is easily constructed, never needs repainting and delivers proven lifetime performance. With Aquastore, you can be assured you will get the highest engineered quality, service and product life in storage tanks. For more information visit www.aquastore.com or call 815-756-1551.
Tanks & Domes Glass Tanks with a Heart of Steel™
;d]_d[[h[Z IjehW][ FheZkYji 9ecfWdo )*+ >Whl[ijeh[ :h_l[ :[AWbX" ?B ,&''+ .'+#-+,#'++' mmm$WgkWijeh[$Yec © 2007. Aquastore is a registered trademark of Engineered Storage Products Company.
Write in 705
Write in 745
Write in 743
Write in 742
34_ProblemSolver_1107.qxd
11/6/07
2:52 PM
Page 38
38
November 2007 • WWDmag.com • WATER & WASTES DIGEST
PROBLEMSOLVER The staff at Rock Creek WWTP has seen a significant reduction in energy costs after installing the LDO probes and Hach controllers. Automating aeration based on current DO levels has brought an estimated power cost savings of approximately $3,500 per year per basin, or a total of about $14,000 per year if all four basins are operated.
The
Loop-Power House +
Loop Leader -
Precision Digital Corp (800)343-1001 www.predig.com
TM
Series
Loop LeaderTM Series Process Indicator & Flow/Rate Totalizer
Indicators, Flow/Rate Totalizers, Flow Computers & Batch Controllers
•
Loop-Powered
•
Loop, AC, DC, or battery power
•
5-Digit LCD, 0.6” (15.2 mm) high
•
4-20 mA, 0-10 V, pulse, or RTD inputs
•
8-Digit Total display (Totalizer)
•
Rugged NEMA 4X enclosures
•
FM Type 4X, IP65 front
•
Field & panel mount enclosures
•
Custom engineering units & bargraph
•
15-point linearization
•
Square root & open channel flow
•
Non-resettable 11-digit Total (Totalizer)
•
Operating range -20/30 to 65°C
•
Operating range -30/40 to 80°C
Write in 721
Need more direction? With education targeted to your specific needs and organized into tracks such as Construction Site Stormwater Management and Inspector in Training you will maximize your training dollars.
The average biochemical oxygen demand (BOD) of the influent is 240 mg/L, which is reduced to 3 to 4 mg/L during the treatment cycle. The concentration of total suspended solids averages 200 mg/L coming into the plant and is reduced to 2.0 mg/L prior to the decanting phase. The water is also treated for concentrations of ammonia, phosphorous, total and organic nitrogen and pH. The clear water decanted from the top of the reactor is discharged into the Mississippi River. The LDO probes are set to maintain a concentration in each basin. However, the blowers are not shut down instantly when the DO reaches 4.0 mg/L. Instead, the probes continue tracking the reading for four full minutes. If the DO concentration falls below 4.0 mg/L at any time during the four-minute interval, the timing is reset and a new four-minute interval begins. “This helps ensure that the 4.0 mg/L reading represents actual conditions in the tank, not just a spot reading,” Daniel said. After four consecutive minutes with readings at the 4.0 mg/L level, the blower is turned off until the DO level drops to the predetermined trigger point.
Using LDO sensors
NEW FOR EC08 EC45: Regulatory Construction Compliance – What side of the silt fence are you on? Learn the protocol for engaging in local shareholding and decision making for state or federal mandated erosion control and stormwater quality regulations.
Register today at www.ieca.org/water
The World’s Largest Soil & Water Event February 18-22 • Expo February 19-21, 2008 Disney’s Coronado Springs Resort Write in 715
The LDO sensors offer specific advantages in accurate DO monitoring and control that membrane-type sensors do not provide. Because there is no membrane, there is no replacement due to fouling and no need to monitor and replace electrolyte solution. Unlike membrane sensors, the LDO probes do not consume oxygen in the process of measuring it, so measurement accuracy is improved. The LDO sensor is coated with a luminescent material that responds to blue
34_ProblemSolver_1107.qxd
11/6/07
2:52 PM
Page 39
39
WATER & WASTES DIGEST • WWDmag.com • November 2007
Energy cost reduction The staff at Rock Creek WWTP has seen a significant reduction in energy costs after installing the LDO probes and controllers. Automating aeration based on current DO levels has brought an estimated power cost savings of approximately $3,500 per year per basin (based on $0.03/kwh) or a total of about $14,000 per year if all four basins are operated. Since energy costs are generally the highest operational expenses at a WWTP, there can be a significant savings while the control of the process is improved as a result of optimum aeration. WWD Bob Dabkowski is wastewater specialist for Hach Co. and a licensed Colorado wastewater operator. He can be reached at 970/663-1377, ext. 2191 or by e-mail at [email protected].
TRAFFIC RATED EASY AND SAFE ONE-MAN OPERATION REDUCED INFILTRATION ANTI-THEFT/SECURITY
PAMREX 36"…
It’s BIG But It Ain’t Heavy!
Technically advanced. Simple to operate.
A simple solution for BIG access troubles.
© 2007 CertainTeed Corporation
light transmitted from a light-emitting diode. In response to sensing the blue light, the sensor emits a red light. The duration of time the red light is emitted corresponds to the amount of DO present in the water. As the DO concentration increases, the amount of time required for the red light emission decreases. The measurement process is continuous so that the risk of over-aeration is minimized. The operation of the sensor is unaffected by the presence of hydrogen sulfide, wastewater chemicals, heavy metals or fluctuations in pH levels. Maintenance has been minimal with the LDO sensors at the Rock Creek WWTP. “We follow the manufacturer’s recommendation for preventive maintenance,” Daniel said. “Once a month we pull them up and wipe them off. The probes have operated without problems since we put them in.” The Hach sc100 controllers continuously read the LDO probes and communicate via a 4- to 20-mA signal to the plant’s SCADA system. Each controller also has a built-in data logger that collects measurements at user-selectable intervals (1 to 15 minutes), along with calibration and verification points, alarm history and instrument setup changes for up to six months. Each LDO probe is connected to a separate controller. Although each controller is designed to receive data from up to two sensors simultaneously—and plug-and-play capabilities and multiple-parameter functionality will allow operators to easily switch probes between different processes—the plant elected to use one controller with each LDO probe to provide back-up in this critical process.
The new PAMREX 36" from CertainTeed Access Covers solves a number of BIG problems for municipalities, fitting oversized manholes at half the weight of traditional cast-iron alternatives. PAMREX 36" features an innovative hydraulic arm and twin-hinge design that make it easier and safer to raise and lower, allowing for one-man operation. Factor in long-term durability, resistance to inflow and infiltration, and security from unauthorized access, and you’ve got BIG answers to all of your BIG issues. PAMREX 36"—A lightweight solution to a weighty problem. For a complete listing of agents in your area, visit www.certainteed-pamcovers.com/pamrex, or call 877.351.3323 for more information. EXTERIOR: ROOFING • SIDING • WINDOWS • FENCE • RAILING • TRIM • DECKING • FOUNDATIONS • PIPE • ACCESS COVERS INTERIOR: INSULATION • WALLS • CEILINGS
Write in 706
Proven Biological Solutions ®
For more information, write in 1119 on this issue’s Reader Service Card.
HEADWORKS BIOLOGY SEPARATION MEMBRANE DISINFECTION BIOSOLIDS SYSTEMS
TM
The Meteor ActiveCell is a compact and flexible solution for biological wastewater treatment systems. Degremont Technologies-Infilco offers trusted, proven solutions for BOD Reduction, Nitrification and Total Nitrogen Removal. Contact us today!
• Upgrades to existing systems yield increased flow capacity and nutrient removal
LEARN MORE
• High nitrification rates at low suspended growth
For additional articles on this topic, visit: www.WWDmag.com/lm.cfm/wd110709
SRT and low temperatures • Ease of retrofit • Operates with both coarse and fine bubble systems
Infilco Degremont, Inc. 8007 Discovery Drive, Richmond, Virginia 23229 (800) 446-1150
Write in 714
www.infilcodegremont.com
