Use of a seeder reactor to manage crystal growth in the fluidized bed reactor for phosphorus recovery

Kazuaki Shimamura, Hideyuki Ishikawa, Toshihiro Tanaka, Izumi Hirasawa

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    The authors have been engaged in the development of a phosphorus recovery system capable of maintaining high recovery efficiencies, with the chemical cost suppressed. This time, they conducted demonstration tests of a fluidized bed magnesium ammonium phosphate reactor provided with a seeder reactor for the supernatant from anaerobic digestion using a pilot experimental plant with a wastewater treatment capacity of 20 m3/d. For the digestion supernatant with a phosphorus concentration of approximately 300 mg/L, the treated water phosphorus concentration was 10 to 25 mg/L, and the phosphorus recovery efficiency was more than 90%. Relative to the chemical cost in the case of magnesium chloride, the chemical cost in the case of magnesium hydroxide is approximately 40%. Thus, with the new system, it was possible to reduce the running cost while maintaining high recovery efficiencies.

    Original languageEnglish
    Pages (from-to)406-413
    Number of pages8
    JournalWater Environment Research
    Volume79
    Issue number4
    DOIs
    Publication statusPublished - 2007 Apr

    Fingerprint

    fluidized beds
    Crystallization
    Crystal growth
    Fluidized beds
    Phosphorus
    crystals
    crystal
    phosphorus
    Magnesium
    Recovery
    magnesium
    cost
    Costs
    magnesium hydroxide
    Magnesium Hydroxide
    magnesium ammonium phosphate
    magnesium chloride
    Magnesium Chloride
    Anaerobic digestion
    anaerobic digestion

    Keywords

    • Chemical nutrient removal
    • Crystallization
    • Fluidized bed
    • Magnesium ammonium phosphate
    • Struvite
    • Wastewater treatment

    ASJC Scopus subject areas

    • Environmental Engineering
    • Environmental Science(all)
    • Environmental Chemistry
    • Aquatic Science
    • Water Science and Technology

    Cite this

    Use of a seeder reactor to manage crystal growth in the fluidized bed reactor for phosphorus recovery. / Shimamura, Kazuaki; Ishikawa, Hideyuki; Tanaka, Toshihiro; Hirasawa, Izumi.

    In: Water Environment Research, Vol. 79, No. 4, 04.2007, p. 406-413.

    Research output: Contribution to journalArticle

    Shimamura, Kazuaki ; Ishikawa, Hideyuki ; Tanaka, Toshihiro ; Hirasawa, Izumi. / Use of a seeder reactor to manage crystal growth in the fluidized bed reactor for phosphorus recovery. In: Water Environment Research. 2007 ; Vol. 79, No. 4. pp. 406-413.
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