Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Chlorine regeneration of a zeolite ion-exchange column for ammonia removal from an explosives-impacted mining wastewater.

Environmental technology·2025
See all related articles

Related Experiment Video

Updated: Nov 30, 2025

A Flow-through Exposure System for Evaluating Suspended Sediments Effects on Aquatic Life
12:15

A Flow-through Exposure System for Evaluating Suspended Sediments Effects on Aquatic Life

Published on: January 9, 2017

8.7K

Large batch bench-scale dissolved air flotation system for simulating full-scale turbidity removal.

Juan Pablo Gonzalez-Galvis1, Roberto M Narbaitz1

  • 1Department of Civil Engineering, University of Ottawa, Ottawa, Canada.

Environmental Technology
|November 16, 2020
PubMed
Summary

A new larger batch flotation apparatus (LB-DAF) accurately predicts full-scale dissolved air flotation (DAF) performance for water treatment. This climate adaptation technology shows reliable removal of turbidity and natural organic matter (NOM).

Keywords:
DAF bench-scale testsDissolved air flotation (DAF)natural organic matter removaloperating variable sensitivityturbidity removal

More Related Videos

Comparison of Scale in a Photosynthetic Reactor System for Algal Remediation of Wastewater
05:40

Comparison of Scale in a Photosynthetic Reactor System for Algal Remediation of Wastewater

Published on: March 6, 2017

9.3K
Procedure to Evaluate the Efficiency of Flocculants for the Removal of Dispersed Particles from Plant Extracts
10:37

Procedure to Evaluate the Efficiency of Flocculants for the Removal of Dispersed Particles from Plant Extracts

Published on: April 9, 2016

9.2K

Related Experiment Videos

Last Updated: Nov 30, 2025

A Flow-through Exposure System for Evaluating Suspended Sediments Effects on Aquatic Life
12:15

A Flow-through Exposure System for Evaluating Suspended Sediments Effects on Aquatic Life

Published on: January 9, 2017

8.7K
Comparison of Scale in a Photosynthetic Reactor System for Algal Remediation of Wastewater
05:40

Comparison of Scale in a Photosynthetic Reactor System for Algal Remediation of Wastewater

Published on: March 6, 2017

9.3K
Procedure to Evaluate the Efficiency of Flocculants for the Removal of Dispersed Particles from Plant Extracts
10:37

Procedure to Evaluate the Efficiency of Flocculants for the Removal of Dispersed Particles from Plant Extracts

Published on: April 9, 2016

9.2K

Area of Science:

  • Environmental science
  • Water treatment technologies
  • Climate change adaptation

Background:

  • Global warming is increasing algal and cyanobacterial blooms, necessitating effective water treatment solutions.
  • Dissolved air flotation (DAF) is a promising technology for managing these blooms, but its effectiveness is difficult to predict with standard jar tests.
  • Existing methods like DAF jar tests do not reliably predict full-scale DAF system performance, especially for turbidity removal.

Purpose of the Study:

  • To verify the reliability of a larger batch DAF (LB-DAF) apparatus in simulating full-scale DAF systems.
  • To assess the LB-DAF's capability in predicting turbidity and natural organic matter (NOM) removal for diverse water types.
  • To compare LB-DAF performance against full-scale DAF plants treating eutrophic bay water and river water.

Main Methods:

  • Developed and optimized a larger-diameter/larger-volume batch apparatus (LB-DAF).
  • Compared LB-DAF test results with full-scale DAF plant data for two different water sources (Lake Ontario bay water and river water).
  • Investigated the impact of varying operational parameters (flocculation velocity gradients, saturated water pressures, recycle ratios, water depth to diameter ratios) in the LB-DAF.

Main Results:

  • LB-DAF tests accurately predicted full-scale DAF turbidity removals, with an average difference of 2% and 6% for the tested waters.
  • LB-DAF demonstrated excellent prediction of natural organic matter (NOM) removals, with less than a 1% difference compared to full-scale plants.
  • Variations in LB-DAF operational variables showed no significant impact on turbidity and NOM removal efficiencies.

Conclusions:

  • The LB-DAF apparatus is a reliable tool for simulating and predicting the performance of full-scale DAF systems in water treatment.
  • LB-DAF provides a more accurate assessment of DAF treatment feasibility for climate change adaptation compared to traditional jar tests.
  • The developed LB-DAF method offers a robust approach for optimizing DAF operations and ensuring effective water quality management.