Study on treatment of ammonium nitrogen in desulfurization and denitrification wastewater with sodium hypochlorite

Zhen Zhou, Da Long Hu, Chu Qiao Zhang, Xue Lian Shen, Chun Hua Wu, Ping Zhang, Luo Chun Wang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Based on the investigation of measurement method of ammonium nitrogen (NH4-N) desulfurization and denitrification wastewater (DDW) by distillation method, effects of pH, Cl/N and the initial concentration of NH4-N on the removal of NH4-N in DDW by sodium hypochlorite were studied. Results of parallel test and standard recovery test demonstrated good reliability and accuracy of the distillation method for the measurement of NH4-N in DDW. The NH4-N removal efficiency increased with pH from 5.0 and 8.0, and then decreased with pH higher than 8.0. Therefore, the optimum pH value was 8.0 with NH4-N removal efficiency of 74.7%. NH4-N removal efficiency was increased from 16.9% to 84.1% with Cl/N molar ratio rose from 1 to 5. The initial concentration of NH4-N showed insignificant effect on the removal amount of NH4-N, and the removed NH4-N was about 12~13mg/L with the addition of 4.86mmol/L sodium hypochlorite.

Original languageEnglish
Title of host publicationEnvironmental Engineering
Pages438-441
Number of pages4
DOIs
StatePublished - 2014
Externally publishedYes
Event3rd International Conference on Energy, Environment and Sustainable Development, EESD 2013 - Shanghai, China
Duration: 12 Nov 201313 Nov 2013

Publication series

NameAdvanced Materials Research
Volume864-867
ISSN (Print)1022-6680

Conference

Conference3rd International Conference on Energy, Environment and Sustainable Development, EESD 2013
Country/TerritoryChina
CityShanghai
Period12/11/1313/11/13

Keywords

  • Ammonium nitrogen
  • Desulfurization and denitrification
  • Sodium hypochlorite
  • Wastewater

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