Altamonte Springs, FL - Pranjali Kumar celebrates the successful installation of the ultrafiltration skid at the Altamonte Springs DPR demonstration facility. Behind her towers the completed 17-and-a-half-foot biofilter. Any day now we will be making new water using the innovative O₃/BAF/UF/GAC/UV AOP system!
This study monitored three different activated sludge systems from the Blue Plains Advanced Wastewater Plant for a 1 year period to explore the relationship between effluent quality and activated sludge settling and flocculation behavior.
Mancell-Egala, W., Su, C., Takacs, I., Novak, J., Kinnear, D., Murthy, S., De Clippeleir, H. "Settling Regimen Transitions Quantify Solid Separation Limitations Through correlation with Floc Size and Shape."Water Research 109 (2017) pp: 54-68, 2016.
Daytona Beach, FL - Carollo is kicking off another UV retrofit, this time in Daytona Beach at the Westside Regional WRF. PM Sudhan Paranjape is leading this UV4000 retrofit, which will result in a new Trojan UVSigna and reduce energy by ~65%.
Eva Steinle-Darling and John Rehring rustlin' up some new water reuse work in Cheyenne Wyoming!
Beverly Hann and Eric Casares visiting the Leprino Foods (cheese makers) water reclamation plant considering new ways to reuse and purify water for a more sustainable system.
The San Diego design team has a team dinner in advance of the Pure Water San Diego potable water reuse interview...which we won!!! Great job Jeff Thornbury, Jim Meyerhofer, and team!
Our legacy of award-winning projects continues, as the ACEC Utah branch selected Carollo's work on the Utah Valley Water Treatment Plant Improvement Project for the Engineering Excellence Honor Award!
The project restored the plant’s original 80 mgd capacity, delivered an additional 20 mgd at no cost, reduced disinfection byproducts, and improved performance despite tight site constraints and without disrupting operations.
Congratulations to the project team and our client, the Central Utah Water Conservancy District!
Recently, several publications targeting analytical approaches for produced water and hydraulic fracturing flowback from unconventional oil and gas (O&G) production expressed the immediate need for robust analytical methods for the quantification of (trace) organic chemicals in hydraulic fracturing waters.
This paper consists of a study about the quantitative analysis of individual semi-volatile organic compounds in hydraulic fracturing waters. More specifically, it presents a versatile method for the quantitative analysis of semi-volatile linear aliphatic hydrocarbons in the n-C10 to n-C32 range and 16 PAH in hydraulic fracturing waters using SPE on disposable octadecyl-bonded silica (C18) cartridges followed by GC-MS.
Regnery, J., Coday, B. D., Riley, S. M., and Cath, T. Y. 2016. "Solid-phase Extraction Followed by Gas Chromatography-Mass Spectrometry for the Quantitative Analysis of Semi-Volatile Hydrocarbons in Hydraulic Fracturing Wastewaters."Analytical Methods, 8(9), pp: 2058-2068.
Forward osmosis (FO) membrane fouling and performance were systematically studied for an extended time during treatment of produced water using cellulose triacetate (CTA) and polyamide thin film composite (TFC) FO membranes. Performance was evaluated with integrity tests that measured water flux, reverse salt flux (RSF), and specific reverse salt flux (SRSF). Test results are discussed in this paper.
Bell, E. A., Poynor, T. E., Newhart, K. B., Regnery, J., Coday, B. D., and Cath, T. Y. 2016. "Produced Water Treatment Using Forward Osmosis Membranes: Evaluation of Extended-Time Performance and Fouling."Journal of Membrane Science, 525, pp: 77-88.
This paper reviews sulfite in the environment, sulfite chemistry, microbiology, toxicity, and its potential use for denitrification.
Our review of the literature, as well as our own lab experience, suggests that sulfite can effectively serve as an electron donor for denitrification. Further research is needed to determine the kinetics of sulfite-based denitrification, its toxic threshold for sulfur-oxidizing microorganisms, and its potential inhibition of sensitive species such as nitrifying microorganisms and potential formation of nitrous oxide.
Sabba, F., DeVries, A., Vera, M., Druschel, G., Bott, C., and Nerenbert, R. 2016. "Potential Use of Sulfite as a Supplemental Electron Donor for Wastewater Denitrification."Reviews in Environmental Science and Bio/Technology, 15 (4): pp: 563-572.
Riverside, Calif.– Carollo Engineers, Inc. is seeking qualified disadvantaged business enterprise firms to join our team for the Inland Empire Utilities Agency’s Carbon Canyon Improvement Project.
Denver, CO - WateReuse Colorado is pushing ahead with a Regulatory Framework and Outreach Approach for Direct Potable Water Reuse. Workshop #2 in Denver brought together utilities, regulators, stakeholder groups and consultants from around Colorado to collaborate and evaluate potential Regulations, Policy, and Guidance for DPR, then dove head first into the target audiences for education and outreach along with their respective needs within our communities. For Workshop #2, thanks to John Rehring and Austa Parker (Carollo), Ron Falco (CDPHE), Greg Baker (Aurora), and Laura Bellanger (Western Resource Advocates), and the dedicated staff from Aurora Water, Centennial Water and Sanitation District, CH2M, CDPHE, Colorado Springs Utilities, Colorado Water Conservation Board, Denver Water, MSK Consulting, Plum Creek Water Reclamation Authority, South Metro Water Supply Authority, Town of Castle Rock, and Western Resource Advocates for a successful effort.
Beverly Hann and Eric Casares visiting the Leprino Foods (cheese makers) water reclamation plant considering new ways to reuse and purify water for a more sustainable system.
The San Diego design team has a team dinner in advance of the Pure Water San Diego potable water reuse interview...which we won!!! Great job Jeff Thornbury, Jim Meyerhofer, and team!
Our legacy of award-winning projects continues, as the ACEC Utah branch selected Carollo's work on the Utah Valley Water Treatment Plant Improvement Project for the Engineering Excellence Honor Award!
The project restored the plant’s original 80 mgd capacity, delivered an additional 20 mgd at no cost, reduced disinfection byproducts, and improved performance despite tight site constraints and without disrupting operations.
Congratulations to the project team and our client, the Central Utah Water Conservancy District!
Recently, several publications targeting analytical approaches for produced water and hydraulic fracturing flowback from unconventional oil and gas (O&G) production expressed the immediate need for robust analytical methods for the quantification of (trace) organic chemicals in hydraulic fracturing waters.
This paper consists of a study about the quantitative analysis of individual semi-volatile organic compounds in hydraulic fracturing waters. More specifically, it presents a versatile method for the quantitative analysis of semi-volatile linear aliphatic hydrocarbons in the n-C10 to n-C32 range and 16 PAH in hydraulic fracturing waters using SPE on disposable octadecyl-bonded silica (C18) cartridges followed by GC-MS.
Regnery, J., Coday, B. D., Riley, S. M., and Cath, T. Y. 2016. "Solid-phase Extraction Followed by Gas Chromatography-Mass Spectrometry for the Quantitative Analysis of Semi-Volatile Hydrocarbons in Hydraulic Fracturing Wastewaters."Analytical Methods, 8(9), pp: 2058-2068.
Forward osmosis (FO) membrane fouling and performance were systematically studied for an extended time during treatment of produced water using cellulose triacetate (CTA) and polyamide thin film composite (TFC) FO membranes. Performance was evaluated with integrity tests that measured water flux, reverse salt flux (RSF), and specific reverse salt flux (SRSF). Test results are discussed in this paper.
Bell, E. A., Poynor, T. E., Newhart, K. B., Regnery, J., Coday, B. D., and Cath, T. Y. 2016. "Produced Water Treatment Using Forward Osmosis Membranes: Evaluation of Extended-Time Performance and Fouling."Journal of Membrane Science, 525, pp: 77-88.
This paper reviews sulfite in the environment, sulfite chemistry, microbiology, toxicity, and its potential use for denitrification.
Our review of the literature, as well as our own lab experience, suggests that sulfite can effectively serve as an electron donor for denitrification. Further research is needed to determine the kinetics of sulfite-based denitrification, its toxic threshold for sulfur-oxidizing microorganisms, and its potential inhibition of sensitive species such as nitrifying microorganisms and potential formation of nitrous oxide.
Sabba, F., DeVries, A., Vera, M., Druschel, G., Bott, C., and Nerenbert, R. 2016. "Potential Use of Sulfite as a Supplemental Electron Donor for Wastewater Denitrification."Reviews in Environmental Science and Bio/Technology, 15 (4): pp: 563-572.
Riverside, Calif.– Carollo Engineers, Inc. is seeking qualified disadvantaged business enterprise firms to join our team for the Inland Empire Utilities Agency’s Carbon Canyon Improvement Project.
Denver, CO - WateReuse Colorado is pushing ahead with a Regulatory Framework and Outreach Approach for Direct Potable Water Reuse. Workshop #2 in Denver brought together utilities, regulators, stakeholder groups and consultants from around Colorado to collaborate and evaluate potential Regulations, Policy, and Guidance for DPR, then dove head first into the target audiences for education and outreach along with their respective needs within our communities. For Workshop #2, thanks to John Rehring and Austa Parker (Carollo), Ron Falco (CDPHE), Greg Baker (Aurora), and Laura Bellanger (Western Resource Advocates), and the dedicated staff from Aurora Water, Centennial Water and Sanitation District, CH2M, CDPHE, Colorado Springs Utilities, Colorado Water Conservation Board, Denver Water, MSK Consulting, Plum Creek Water Reclamation Authority, South Metro Water Supply Authority, Town of Castle Rock, and Western Resource Advocates for a successful effort.
