Presentations by Alan Plummer Associates, Inc.
Matches: 6
A Tale of Two Waters: Using a Single Set of Membrane Equipment for Both Direct Filtration and Settled Water Filtration
MIT PRESSURES FOR MEMBRANES IN TERTIARY FILTER APPLICATIONS. Operations staff repaired the fibers using the new MIT pressure of 10.3 psi and resumed operation of the pilot plant. Water quality data improved dramatically. The membranes were able to remove Total P to below a monthly maximum of 0.04 mg/L, while existing sand filters removed Total P t...
Fouled and Back Again: A Membrane's Tale
The City of Mansfield, Texas owns and operates the Bud Ervin Water Treatment Plant (WTP). The facility includes both a conventional treatment train and a membrane filtration train consisting of a hollow-fiber, low-pressure membrane system that has been in operation since the spring of 2011. After about 12 months of operation, the City began to exp...
Utilizing a Novel TMP Balance Approach to Analyze Process Data and Investigate Ultrafiltration Membrane Fouling during Surface Water Treatment
Membrane fouling is a limiting factor for the operation of UF processes and fouling management is critical for successful integration of UF technologies in water treatment. A new data analysis approach of transmembrane pressure balance (TMP balance) may improve data interpretation and operating decisions. Using flux data and different cleaning regi...
Multi-City Collaborative Membrane Filtration Pilot Study: Past Outcomes and Present Benefits
A collaborative pilot study provided eleven months of pilot testing data on four membrane vendors at a fraction of the cost to each utility of an independent study. Engineers and municipalities seeking to reduce pilot study costs while increasing testing scope may consider evaluating opportunities for multi-city collaboration. Following completion ...
Biological Nutrient Removal as Membrane Pretreatment In Direct Potable Reuse: Pilot Study Considerations And Results
Municipal wastewater effluent is a challenging feed water for membrane systems. Biological nutrient removal (BNR) systems can provide advantages for treatment of municipal wastewater relative to traditional activated sludge processes. This paper discusses operational considerations for a BNR system in a direct potable reuse application and investig...
Breaking the Mold: Reducing Labor Using an Alternative to Diffused Air Aeration Basins with an MBR
Seeking a solution to the problem of a minimally staffed, remotely operated treatment plant, drove the project team toward a solution that doesn?t fit the traditional MBR model. This abstract describes an innovated combination of a surface aerator aeration basin in combination with an MBR system, which to the best of our knowledge is the first in t...