Anammox Treatment Performances Using Polyethylene Sponge as a Biomass Carrier

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  • THI HIEN HOA TRAN
    Graduate School of Science and Technology, Kumamoto University
  • NGOC KHANH LUONG
    Graduate School of Science and Technology, Kumamoto University
  • FUCHU YUICHI
    Design & Development Department, Ebara Environmental Engineering Co., Ltd.
  • S.GE Y.
    Design & Development Department, Ebara Environmental Engineering Co., Ltd. Ebara Corporation
  • FURUKAWA KENJI
    Graduate School of Science and Technology, Kumamoto University

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  • ポリエチレン製スポンジ担体を活用するanammox処理

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Abstract

Nitrogen removal using a polyethylene (PE) sponge biomass carrier was evaluated in a fixed-bed reactor for nitrogen removal by the anammox process. The fixed-bed reactor was operated continuously for 240 days. T－N removal efficiencies increased from 38 %, 67 %, 72 %, 74 % to 75 % with stepwise increases in volumetric T－N loading rates. A T－N removal rate of 2.8 kg N/m3/day was obtained after 240 days of operation. After 3 months, anammox biomass fully covered the surface of the PE sponge carrier and the color of the material changed from white to red. Following 5 months of operation, biomass proliferated on the surface of the material and a dark-red color was observed. With the obtained results, PE sponge is auspicious biomass carrier for growth of anammox bacteria.

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