전체메뉴

  • PDF Catalog Download

Michigan Technology

Technology

Introduction of Michigan Technology
DOF (Dissolved Ozone Flotation) System

Brief Description of the DOF technology

DOF is a single process hat combines M-DAF and ozone.

M-DAF removes SS, turbidity, algae, oil, surfactants, and T-P, and ozone removes TOC, BOD, COD, color, odor, taste, and disinfect microbial agents including virus and bacteria.

Removal of suspended matter, total phosphorus, and algae by flotation method by micro ozone bubble

mdof

M-DOF System

mdof

Excellent Separation

Suspended solids, Turbidity
Oils, Sufactants
Total phosphorous Algae, etc.

Strong Oxidation

Disinfection of Virus, Bacteria
Removal of Color, Odor, Taste
Removal of 800, COD, Hazardous Materials

Diagram of M-DOF

mdof

Process Diagram: P&ID

mdof

Core Technology

  • mdof
    Compressing Technology of Strongly Oxidative (Corrosive) Gas

    Patented technology that enables to compress strongly oxidative ozone gas into water up to 4 ~ 10kg/cm2, which was applied in M-DAF to generate numerous micro and nano ozone bubbles.

  • mdof
    Micro and nano bubble generating System

    A Micro and Nano Bubble Generating System were developed. The sizes of generated micro and nano bubbles are smaller than 40㎛ and uniform without macro-bubbles, which makes it possible the dense bubble layer.

  • mdof
    High Density of Bubble Layer

    Hydrodynamic modeling has been conducted in the flotation basin for maintaining high density of bubble layer, which maximizes separation rates of solids and water in the flotation basin.

Advantages of Core Technologies of the DOF system

mdof

Contact efficiency of micro and nano bubbles with solids was maximized by maximizing surface area of micro and nano bubbles, which maximizes removal rates of floated flocs.

Minimized hydraulic retention time for reaction, and footprint of the plant by using a unique ozone compressing system of Michigan Technology

Various water quality parameters like SS, oil, surfactant, algae, TP, color, BOD, BOD, COD, TOC, and VOCs are removed in a single unit of DOF system

mdof
mdof
mdof
mdof

- Simplified System by combining DAF flotation and ozone oxidation processes

- Easy for construction and maintenance of the DOF system by combining two processes which minimizes control points

Quick response for the trouble shooting by accumulated experiences

mdof

Minimized Ozone facility by Maximizing ozone utilization rate of up to 98~99% in the DOF system

No need an extra ozone contact chamber and area

Electric power was minimized by minimizing ozone related facilities, and combing two processes

Application Area

  • 1Wastewater Reuse : TOC, BOD, COD, SS, color, turbidity, and odor maybe effectively removed with disinfection of virus and bacteria in a single usit of the DOF system
  • 2Advanced Wastewater treatment (Tertiary Treatment) : Removal of TP, TOC, disinfection, and SS, etc
  • 3Textile/Pigment wastewater treatment for color and COD removal, Pre and post treatments of biological process. Livestock wastewater, and leachate of the landfill site may be the target application
  • 4Removal of odor and taste causing material may be removed in drinking water treatment
  • 5Removal of Non-biodegradable organic, toxic chemical material, phenol, and Fluoride
  • 6Grey water reuse
  • 7Advanced drinking water treatment including disinfection
  • 8Small scale of wastewater treatment for small towns