Presentations by JACOBS
Matches: 41
pH Problem? Put it in a bubble and blow it away - South Blount County's Membrane WTP Experience
South Blount County Utility District (SBCUD) has an exceptionally pure raw water supply from Tellico Lake, with very low levels of natural alkalinity (6 mg/L - 8 mg/L). The raw water turbidity is typically less than 1 NTU, allowing direct membrane filtration without sedimentation. Ultimately, this low-alkalinity supply resulted in a tendency of the...
Optimization and Process Changes Achieve Membrane Integrity, Reliability, Increase Membrane Life and Save Capital
Designing a membrane plant with the right parameters ensures that finished water production and water quality goals are achieved while minimizing unforeseen, premature and costly membrane module replacements. However, even with pilot testing, it is challenging to predict the impacts of seasonal or long-term changes in raw water quality and the eff...
Troubleshooting Water Quality and Operational Issues During the Commissioning of a New SWRO Plant
The focus of the presentation will be on the detailed evaluation of bench- , pilot- , and full-scale study results, the challenges of implementing and maintaining the required treatment levels for optimal performance of a new SWRO plant under varying seawater quality conditions. The results from this study will provide utilities with an in-depth un...
Achieving Maximum Pathogen Removal Credit for Full-Scale UF and RO Systems in Potable Reuse Schemes
Methodology and results of challenge testing conducted with full-scale UF and RO systems using MS2 phage and Rhodamine WT, respectively, to gain 3-log virus removal credit for both membrane processes at the Beenyup Advanced Water Recycling Plant groundwater replenishment (IPR) scheme in Perth, Australia....
Using Effective Wellfield Management to Mitigate Fouling During Conversion of Lime Softening to RO
NSID commissioned a new RO system in 2016 to replace their LS WTP. During the commissioning process, the source water quality at the facility was found to be unsuitable for the membranes start-up, despite previous performance tests demonstrating that the water quality as sufficient for membranes. This paper will discuss the challenges and solutions...
Saving Money using a Single Source of Responsibility Membrane Replacement with Life Cycle Analysis - City of Melbourne Case Study
The evaluation and lessons learned during the membrane replacement process are applicable to other utilities looking at membrane replacement and how to consider upgrades of their existing RO systems with a focus on reducing life cycle costs. This paper will summarize the results of the initial facility evaluation and the membrane replacement bid re...
Membrane Replacement, System Upgrades and Rehabilitation of a 25-Year-Old Nanofiltration System
This paper provides a summary of the membrane evaluation, condition assessment, evaluation results, design considerations for the system upgrade and a discussion of several items found during commissioning....
Issues with Algae: Spokane Phosphorous Removal Plant
The City of Spokane, Washington is implementing tertiary membrane filtration at their Riverside Park Water Reclamation Facility, with the primary objective of producing effluent with a seasonal average total phosphorus concentration of less than 18 parts per billion. The system will have a maximum month average daily flow capacity of 50 million ga...
Design, Construction and Commissioning of the Multiprocess Green Meadows Water Treatment Plant
Lee County Utilities owns and operates the Green Meadows lime softening facility that treats a blend of surficial aquifer groundwater and intermediate Sandstone aquifer groundwater, both hard, freshwater sources, producing up to 9 mgd. The facility?s aging treatment infrastructure was nearing the end of its useful life and needed to be replaced to ...
Selection of Membranes for a Greenfield Project through Pilot Studies
Jacobs was contracted to develop a design for a new 16.0 MGD drinking water plant at a greenfield site incorporating membrane treatment. Prior to design, the process was validated by a 6 month pilot study to understand the raw quality and the performance of the unit processes, specifically various membrane materials. This paper describes the bench-...
Desalination in the Desert
Will include information about brine reduction using closed circuit reverse osmosis, costs and regulations associated with evaporation ponds, and RO rejection of arsenic and hex chrome...
Multi-Faceted Approach to Mitigate Membrane Filtration Fouling while Improving Overall Treatment Reliability
This paper will describe Marco Island's membrane filtration fouling troubleshooting, alternative membrane manufacturer module replacement and facility expansion experience. Other utilities and consultants will benefit from the knowledge generated during the process of understanding/mitigating of MF fouling within the Marco system. Utilities will al...
Is Organic Fouling Making Your Life Difficult? Mitigation of Organic Fouling of Low Pressure Membranes Using LC-OCD
This paper will describe the use of a unique organics characterization method, liquid chromatography with on-line carbon detection to identify the primary cause of organic fouling in two fouling scale ultrafiltration plants, biopolymers and cTEP, and how the LC-OCD results were used to mitigate the impacts of these foulants through optimization of ...
Spokane County Regional Water Reclamation Facility MBR - Design, Startup, and Operation of Greenfield Facility
The Spokane County Regoinal Water Reclamation Facility is a 8.5-mgd, greenfield treatment facility utilizing membrane bioreactor technology to meet some of the more stringent effluent limits in the Pacific Northwest. The facility is required to meet a summer total phosphorus limit of 0.050 mg/L on a monthly average basis, together with an ammonia-n...
City of Spokane Riverside Park Water Reclamation Facility - Tertiary Membrane Facility
The City of Spokane is implementing an innovative use of tertiary membrances to help address its integrated water quality planning to meet the total maximum daily load (TMDL) requirements on the Spokane River. At the City's Riverside Park Water Reclamation Facility (RPWRF) the tertiary membrane filtration system is designed to meet an average daily...
Closed Circuit Reverse Osmosis (CCRO) for Treatment of RO Concentrate for Potable Reuse
The Orange County Water District (OCWD) Groundwater Replenishment System (GWRS) is the world’s largest potable reuse plant, treating secondary effluent to produce purified water for groundwater recharge as a drinking water supply augmentation and for injection into coastal wells that form a barrier to prevent seawater intrusion. Currently the GWR...
Optimizing Membrane Filtration Systems Through the Application of Digital Twins
This paper provides two project case studies, City of Spokane and Gwinnett County, where dynamic simulation was used to assist with the design and optimization of membrane facilities. The City of Spokane’s 150 million gallons per day (mgd) Riverside Park Water Reclamation Facility (Riverside Park) is in the process of adding a tertiary treatment ...
Optimizing Membrane Filtration Systems Through the Application of Digital Twins
This paper provides two project case studies, City of Spokane and Gwinnett County, where dynamic simulation was used to assist with the design and optimization of membrane facilities. The City of Spokane’s 150 million gallons per day (mgd) Riverside Park Water Reclamation Facility (Riverside Park) is in the process of adding a tertiary treatment ...
Regional Brackish Water Reclamation Program Feasibility Study
The Water Replenishment District of Southern California (WRD) is responsible for managing and replenishing both the West Coast and Central Coast groundwater basins. In the West Coast Basin, a significant plume of saline groundwater (saline plume) with elevated total dissolved solids (TDS) has been trapped in the Gage, Silverado, Lynwood, and Lower ...
Regional Brackish Water Reclamation Program Feasibility Study
The Water Replenishment District of Southern California (WRD) is responsible for managing and replenishing both the West Coast and Central Coast groundwater basins. In the West Coast Basin, a significant plume of saline groundwater (saline plume) with elevated total dissolved solids (TDS) has been trapped in the Gage, Silverado, Lynwood, and Lower ...
Treating Variable TDS Feed Water: Cost-Effective Existing System Modification and Upgrade
The Collier County North County Regional Water Treatment Plant (NCRWTP) is a 20-mgd facility including a 12-mgd nanofiltration (NF) system and an 8-mgd brackish water reverse osmosis (BWRO) system. The existing BWRO system treats the Upper Floridan Aquifer Wells. Soon after the RO system installation in 1999, four of the new Floridan wells were dis...
Treating Variable TDS Feed Water: Cost-Effective Existing System Modification and Upgrade
The Collier County North County Regional Water Treatment Plant (NCRWTP) is a 20-mgd facility including a 12-mgd nanofiltration (NF) system and an 8-mgd brackish water reverse osmosis (BWRO) system. The existing BWRO system treats the Upper Floridan Aquifer Wells. Soon after the RO system installation in 1999, four of the new Floridan wells were dis...
An Emerging Application for Low-Pressure Membranes: Treatment of Backwash Waste at Surface Water Treatment Plants for Potable Reuse
In this study, guidance is provided for applying microfiltration (MF) and ultrafiltration (UF) membranes to treat full-scale granular media filter (GMF) backwash water at drinking water plants. An example from the City of Melbourne in Florida is presented with the current approach to backwash water management at the full-scale along with a proposed...
An Emerging Application for Low-Pressure Membranes: Treatment of Backwash Waste at Surface Water Treatment Plants for Potable Reuse
In this study, guidance is provided for applying microfiltration (MF) and ultrafiltration (UF) membranes to treat full-scale granular media filter (GMF) backwash water at drinking water plants. An example from the City of Melbourne in Florida is presented with the current approach to backwash water management at the full-scale along with a proposed...
Thirteen Years of Operation of the World's Largest Zero Liquid Discharge Membrane Plant - What Works and What Doesn't
The Twin Oaks Valley Water Treatment Plant (TOVWTP), located in northern San Diego County, is owned by the San Diego County Water Authority (SDCWA) and operated and maintained by Jacobs under a 15-year contract with SDCWA whose term began in 2008 with plant start-up. TOVWTP, with a rated capacity of 100 million gallons per day (mgd), comprises the ...
Thirteen Years of Operation of the World's Largest Zero Liquid Discharge Membrane Plant - What Works and What Doesn't
The Twin Oaks Valley Water Treatment Plant (TOVWTP), located in northern San Diego County, is owned by the San Diego County Water Authority (SDCWA) and operated and maintained by Jacobs under a 15-year contract with SDCWA whose term began in 2008 with plant start-up. TOVWTP, with a rated capacity of 100 million gallons per day (mgd), comprises the ...
Pre-Treatment and Nanofiltration Pilot Study to Manage Increased Particulate Loading and Reduced Acid Feed Conditions
The City of Boynton Beach operates the West WTP, which is one of the first membrane softening plants in the United States. This WTP has been in operation since 1986 and treats surficial aquifer groundwater using six Nanofiltration (NF) skids each producing 1.45 mgd permeate. The WTP has experienced increased particulate loading. This paper presents...
Pre-Treatment and Nanofiltration Pilot Study to Manage Increased Particulate Loading and Reduced Acid Feed Conditions
The City of Boynton Beach operates the West WTP, which is one of the first membrane softening plants in the United States. This WTP has been in operation since 1986 and treats surficial aquifer groundwater using six Nanofiltration (NF) skids each producing 1.45 mgd permeate. The WTP has experienced increased particulate loading. This paper presents...
A Dual Source Facility Evaluates Expansion of Their Groundwater ROWTP and Inclusion of Membranes in Their Surface WTP
NOM and DBP Precursor Removal Comparisons Between NF and RO Membranes on Cold, High Organics Source Waters
The City of Brandon, Manitoba, along with CH2M (a wholly owned subsidiary of Jacobs Engineering Group), is currently completing the design for an upgrade to the City’s existing lime softening water treatment facility using a dual membrane treatment process (ultrafiltration followed by nanofiltration). The existing facility requires additional tre...
The City of Brandon, Manitoba, along with CH2M (a wholly owned subsidiary of Jacobs Engineering Group), is currently completing the design for an upgrade to the City’s existing lime softening water treatment facility using a dual membrane treatment process (ultrafiltration followed by nanofiltration). The existing facility requires additional tre...
122,000 M3/Day Into a 106,700 M3/Day Footprint – Seawater Desalination Expansion in Morocco
The OCP Group, founded in 1920, is a Moroccan state-owned phosphate rock miner, phosphoric acid manufacturer and phosphate fertilizer producer. OCP owns and operates a large seawater desalination facility at the Jorf Lasfar industrial complex, approximately 120 kilometers southwest of Casablanca. The facility was installed in 2015 to produce 75,800...
122,000 M3/Day Into a 106,700 M3/Day Footprint – Seawater Desalination Expansion in Morocco
The OCP Group, founded in 1920, is a Moroccan state-owned phosphate rock miner, phosphoric acid manufacturer and phosphate fertilizer producer. OCP owns and operates a large seawater desalination facility at the Jorf Lasfar industrial complex, approximately 120 kilometers southwest of Casablanca. The facility was installed in 2015 to produce 75,800...