Advanced Nitrogen Removal Characteristics of Low Carbon Source Municipal Wastewater Treatment via Partial-denitrification Coupled with ANAMMOX

MA Bin1,2 XU Xin-xin1 GAO Mao-hong2 WEI Yan2 PENG Yong-zhen1

(1.National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing, China 100124)
(2.School of Ecology and Environment, Hainan University, Haikou, China 570228)

【Abstract】Partial-denitrification coupled with ANAMMOX is a novel biological nitrogen removal technology, which is expected to slash the external carbon source dosage for advanced nitrogen removal from municipal wastewater. In this study, ANAMMOX sludge was inoculated to investigate advanced nitrogen removal performance and sludge characteristics in a partial-denitrification/ANAMMOX reactor. The results showed that inoculation of ANAMMOX sludge could quickly start the partial-denitrification/ANAMMOX reactor. The effluent total nitrogen concentrations were (4.82 ± 1.84) mg·L−1 with a chemical oxygen demand of 2.19 ± 0.08. Sludge particles larger than 0.20 mm accounted for 86.16% in the reactor. This meant that granular sludge was formed, which was conducive to good retention of ANAMMOX bacteria in the reactor. The external carbon source dosage and the oxygen requirement for nitrification can be reduced by applying partial-denitrification coupled with ANAMMOX to advanced nitrogen removal from the effluent of secondary clarifier in municipal wastewater treatment plants.

【Keywords】 municipal wastewater; partial-denitrification; ANAMMOX; advanced nitrogen removal; granular sludge;

【DOI】

【Funds】 National Natural Science Foundation of China (51868015) Key R&D Research Program of Hainan Province (ZDYF2018241) General Project of Science and Technology Program of Beijing Municipal Education Commission (KM201710005001)

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(Translated by CHEN ZZ)

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This Article

ISSN:0250-3301

CN:11-1895/X

Vol 41, No. 03, Pages 1377-1383

March 2020

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Abstract

  • 1 Materials and methods
  • 2 Results and discussion
  • 3 Conclusions
  • References