High nitrogen removal performance of anaerobically treated fish processing wastewater by one-stage partial nitritation and anammox process with hydroxyapatite (HAP)-based syntrophic granules and granule structure

Yujie Chen; Eli Hendrik Sanjaya; Guangze Guo; Yu-You Li

doi:10.1016/j.biortech.2021.125526

High nitrogen removal performance of anaerobically treated fish processing wastewater by one-stage partial nitritation and anammox process with hydroxyapatite (HAP)-based syntrophic granules and granule structure

Bioresour Technol. 2021 Oct:338:125526. doi: 10.1016/j.biortech.2021.125526. Epub 2021 Jul 11.

Authors

Yujie Chen¹, Eli Hendrik Sanjaya², Guangze Guo³, Yu-You Li⁴

Affiliations

¹ Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Aramaki-Aza, Aoba-ku, Sendai, Miyagi 980-8579, Japan.
² Department of Chemistry, State University of Malang (Universitas Negeri Malang), Jl. Semarang No. 5, Malang, East Java 65145, Indonesia.
³ Department of Frontier Science for Advanced Environment, Graduate School of Environmental Studies, Tohoku University, 6-6-20 Aoba, Aramaki-Aza, Aoba-ku, Sendai, Miyagi 980-8579, Japan.
⁴ Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Aramaki-Aza, Aoba-ku, Sendai, Miyagi 980-8579, Japan; Department of Frontier Science for Advanced Environment, Graduate School of Environmental Studies, Tohoku University, 6-6-20 Aoba, Aramaki-Aza, Aoba-ku, Sendai, Miyagi 980-8579, Japan. Electronic address: gyokuyu.ri.a5@tohoku.ac.jp.

PMID: 34274590
DOI: 10.1016/j.biortech.2021.125526

Abstract

The one-stage partial nitritation and anammox process with the hydroxyapatite (HAP)-based syntrophic granules was studied for the ammonium nitrogen removal from the effluents of a self-agitated anaerobic baffled reactor treating the fish processing wastewater. When the ammonium in the influent was 1140 mg N·L^-1, a high nitrogen removal rate and nitrogen removal efficiency of 1.51 ± 0.10 kg N·m^-3·d^-1 and 88.2% were obtained, respectively. Anammox bacteria of Candidatus Kuenenia stuttgartiensis and ammonium oxidizing bacteria of Nitrosomonas were the two most predominant bacteria, while nitrite oxidizing bacteria activity was low and could be neglected during the treatment. The inorganic element properties of the sludge were analyzed by several methods to confirm the existence of HAP granules. Optical microscopic observation and scanning electron microscopy analysis revealed the structure of the granular sludge.This study supports the feasibility and potential of this process for high-efficiency nitrogen removal from fish processing wastewater.

Keywords: Anammox; Fish processing wastewater; HAP; Nitrogen removal; One-stage.

MeSH terms

Ammonium Compounds*
Bioreactors
Denitrification
Durapatite
Nitrogen
Oxidation-Reduction
Sewage
Wastewater*

Substances

Ammonium Compounds
Sewage
Waste Water
Durapatite
Nitrogen