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Related Experiment Videos

Counterflow co-flocculation flotation for water purification.

Jinlong Guo1, Yil Wang, Dapeng Li

  • 1SKLEAC, Research Center for Eco-Environmental Sciences, Beijing, PR China. jlguo15@hotmail.com

Journal of Environmental Science and Health. Part A, Toxic/Hazardous Substances & Environmental Engineering
|May 15, 2003
PubMed
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A novel counterflow co-flocculation flotation (CC-FF) method enhances potable water treatment by integrating flocculation and flotation. This process improves floc formation and stability for efficient turbidity removal.

Area of Science:

  • Environmental Science
  • Chemical Engineering
  • Water Treatment Technology

Background:

  • Conventional water treatment methods often involve separate flocculation and flotation stages.
  • Optimizing these stages is crucial for efficient removal of suspended particles and turbidity.
  • Developing integrated processes can offer advantages in efficiency and operational simplicity.

Purpose of the Study:

  • To introduce and evaluate a new potable water treatment method: counterflow co-flocculation flotation (CC-FF).
  • To determine optimal operational parameters for the CC-FF process.
  • To highlight the advantages of CC-FF over traditional flocculation-flotation techniques.

Main Methods:

  • Conducted pilot experiments to test the CC-FF process.

Related Experiment Videos

  • Investigated the impact of key operational parameters including detention time, hydraulic load, recycle ratio, and water inlet distance.
  • Assessed aluminum (Al) dosage requirements for varying source water turbidity.

    • Main Results:

    • Optimized conditions include a 6-11 min detention time, 9-16 m3/(m2 h) hydraulic load, ≥8% recycle ratio, and >1200 mm inlet distance.
    • Effective turbidity removal achieved with 0.12-0.35 mmol/L Al dosage for source water turbidity <100 NTU.
    • CC-FF demonstrated advantages including enhanced floc formation and stable aggregate blanket formation.

    Conclusions:

    • The CC-FF process offers a more efficient and stable approach to potable water treatment compared to conventional methods.
    • The integrated design facilitates improved particle-bubble aggregation and blanket stability.
    • Optimized operational parameters ensure effective turbidity removal and resource efficiency.