Bacteria Immobilized Carrier for Wastewater Treatment

What is immobilized carrier?

  • To improve capability of treatment
  • To reduce size of equipment
  • To treat stably at low water temperature
  • To keep reaction of specified bacteria for a long time
  • Easy to use in existing equipment
  • Possibility to reduce sludge volume
担体 DiaFellow™ PTとは?

Key Features of DiaFellow™ PT

  • High MLSS operation
  • Easy maintenance
  • Effective treatment, Compact facility
  • Easy to expand treatment capacity
Membrane filtration Carrier method
Feature
Suitable method for Nitrification denitrification Intermittent aeration Circulation
Typical application Wastewater recycling Anaerobic-aerobic activated sludge process
  • Easy to expand treatment capacity
  • Large retention volume of bacteria due to roughness of surface compounded with carbon fiber
  • High wear and abrasion resistance
    • High flowability in a aerobic tank

How to test initial flowability

    1. Add 10 vol% of carrier into aeration tank (1L), which has already control fixed condition of sludge concentration and airflow of aeration.
    2. Measure volume of floated carrier sequentially. (Flowability starts after carrier is adapted to water and sludge adheres to carrier.)
初期流動性評価方法

Feature of the carrier made by Mitsubishi Chemical

初期流動性評価方法
Shape    :6φ-6L mm
      :10φ-10L mm
Specific Surface :約9000m2/m3
Apparent Specific Gravity  :0.95 g/cm3

Advantage of “DiaFellow™ PT”

    1. Retention volume of bacteria is bigger than other types, because its roughness of surface is higher.
    2. Initial flowability is better, because its hydrophile is higher.

Effect of CF and GF added

  • Roughness of carrier surface
  • Increasing sludge volume adhere to carrier
  • High strength
    • Know-how of fiber length
    • Fiber orientation
    • Surface interaction
  • Increasing flowability by hydrophile

Example 1: Nitrifying and Denitrifying

Conventional Activated Sludge Process

標準活性汚泥法(現行法)

Ludzack-Ettinger Process

活性汚泥循環変法

Adoption of Immobilized Carrier

担体投入型

Example 2: BOD removal

Conventional Activated Sludge Process

標準活性汚泥法(現行法)

Adoption of Immobilized Carrier

担体法(能力アップ、コンパクト化)

Preventing Facility for Treatment Obstacles

担体法(除害設備)

Contact Us

お問い合わせ