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Evaluation of Alternative Oxidation Processes at the Passaic Valley Water Commission Pilot Treatment Facility

Passaic Valley Water Commission, 1/1/92- 12/31/93

Students: Jon Weiner, Denise Springborg

The objective of this pilot study was to evaluate the effects of incorporating one or more of the following processes into the existing full-scale water filtration plant: pre-oxidation with ozone and other alternative oxidants; intermediate ozonation; granular activated carbon (existing filter media or post-filter adsorber), and; a biologically active granular media (GAC filter media or post-filter adsorber).

Proposal, Plans and Reports

• Proposals: Year 1, Year 2

• IPF: Year 1, Year 2

• Other Plans: May 91 plan, Task 3 plan, Task 3-5 plan

• Interim Reports: Task 2.2 & 2.4 report, Jan-Apr'93 report, May'93 report, June'93 report,
• Final Report: Year 2

DBP and Precursor Data

• Apr 21, 1992
• pre-oxidation experiment, 92 ozonation tests, multi-oxidant Precursor graphs
• Oct 92 graphs, Dec 92 graphs, Misc 92 graphs
• 1993 summary , 1993 THM time series, 93 report data, 93 haloacetaldehydes
• Kinetics: THMs, DCAN, HKs, CP

 

Conference presentations based on this work

Theses/Dissertations based on this work

• Weiner, J.M. "Effects of Ozone on Trihalomethane Formation: Pilot Plant Processes and Kinetics," MS Thesis, February, 1995.

• Springborg , D.C. "Effects of Ozone and Biologically Active GAC on Haloacetic Acid Formation," MS Thesis, September, 1994.

 

Background: The Passaic Valley Water Commission (PVWC) of Clifton, New Jersey operated a pilot facility to evaluate alternative treatment processes. Havens and Emerson engineers, with assistance from the University of Massachusetts, developed a detailed Experimental Plan for the initial pilot study to be conducted by the PVWC. The objective of this pilot study was to evaluate the effects of incorporating one or more of the following processes into the existing full-scale GWFP: pre-oxidation with ozone and other alternative oxidants; intermediate ozonation; granular activated carbon (existing filter media or post-filter adsorber), and; a biologically active granular media (GAC filter media or post-filter adsorber). The pilot program was conducted in six principal Tasks:
TASK 1 - Startup and Simulation
TASK 2 - Evaluation of Pre-Oxidants
TASK 3 - Evaluation of Filtration Processes
TASK 4 - Evaluation of Filter and Post-Filtration Adsorption
TASK 5 - Evaluation of Post-Disinfection
TASK 6 - Optimization of Process Trains

Four of the Tasks (1, 2, 3, 5) were to be undertaken during the initial year of testing while the remaining tasks (4, 6) were to be completed during the second year of work. Certain components of the Experimental Plan for the pilot study were well suited for being accomplished at the UMass laboratories while other work was conducted at the pilot plant. In addition, during January and from June through August, UMass graduate students were on-site to conduct certain experiments, collect samples, and assist with pilot plant operation.

The UMass portion of the project encompassed all of the bench-scale experiments for the evaluation of preoxidants (Task 2) and post-disinfection (Task 5), participation in the pilot experiments for the evaluation of preoxidation and intermediate oxidation (Tasks 2.6 and 3), additional data analysis for other aspects of the study, and some of the specialized laboratory analyses required for other Tasks. UMass graduate students (2) conducted bench-scale experiments between January and May, and assisted with pilot experiments in New Jersey during January and the summer.

 

 

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