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Conditioning the alternating aerobic-anoxic process to enhance the removal of inorganic nitrogen pollution from a municipal wastewater in France

Fulazzaky, Mohamad Ali and Abdullah, Noorul Hudai and Mohd. Yusoff, Abdull Rahim and Paul, Etienne (2015) Conditioning the alternating aerobic-anoxic process to enhance the removal of inorganic nitrogen pollution from a municipal wastewater in France. Journal Of Cleaner Production, 100 . pp. 195-201. ISSN 0959-6526

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Official URL: http://dx.doi.org/10.1016/j.jclepro.2015.03.043

Abstract

Inorganic nitrogen pollution from surface waters can adversely affect human health and the environment. Coupled nitrification-denitrification can significantly remove the total inorganic nitrogen pollution amount from municipal wastewater; however, researchers only have a limited understanding of the alternating aerobic-anoxic process in a single reactor. This study performed a typical treatment using a completely mixed alternating aerobic-anoxic extended aeration treatment process in a single reactor, biological fluidised bed reactor to remove inorganic nitrogen pollution from a municipal wastewater in France. Comparative analysis of the coupled nitrification-denitrification reactions was carried out to investigate the two different alternating aerobic-anoxic processes of 3-h aerobic digestion and 6-h anoxic time and 3-h aerobic digestion and 3-h anoxic time. The results indicate that the change in anoxic time, specifically, from 6 to 3 h, can increase the alternating aerobic-anoxic process performance by approximately 53.4%. The average effluent inorganic nitrogen concentration decreased from 10.3 to 4.8 mg N/L, achieving the desired inorganic nitrogen concentration of less than 10 mg N/L in the outflow to meet the stringent effluent standards. The study offers a proper treatment that can be used to help reduce inorganic nitrogen pollution from municipal wastewater processed in a single-sludge reactor. The study's results advance the understanding of this simple technique that effectively removes inorganic nitrogen pollution from municipal wastewater.

Item Type:Article
Uncontrolled Keywords:adhesive wear, dry sliding, friction force, humidity, wear mechanism, wear model
Subjects:A General Works
ID Code:58142
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:30 Aug 2017 15:18

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