Mitigation of nitrogen pollution in water body by incorporating the dhs (down-flow hanging sponge) systems and autotrophic nitrogen removal technologies

Hui Ping Chuang; Takashi Yamaguchi; Madan Tukar; Hideki Harada; Akiyoshi Ohashi

Mitigation of nitrogen pollution in water body by incorporating the dhs (down-flow hanging sponge) systems and autotrophic nitrogen removal technologies

Hui Ping Chuang, Takashi Yamaguchi, Madan Tukar, Hideki Harada, Akiyoshi Ohashi

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to conference › Paper

Abstract

Nitrogen pollution is gathering increased attention due to well-known environmental hazards resulting from overloading of nutrients. Conventional process of nitrogen removal by nitrification and denitrification requires considerable amount of energy and cost for aeration and carbon supply. Several novel and cost-effective biological nitrogen removal processes were developed; however, there were still lots of problems associated with pervious developed reactor systems. In this study application of DHS reactor for nitrogen-removal process could provide the maximum nitrogen-removal efficiency under lower expenditure. The concentrations of nitrogen compounds in this system were maintained below 8 mg N/L in effluent under the nitrogen loading rate of 1.51 kg N/m³-day. In addition, no withdraw sludge was observed in a DHS, decreasing further the cost for post-treatment.

Original language	English
Publication status	Published - 2014 Jan 1
Event	6th International Conference on Environmental Informatics, ISEIS 2007 - Bangkok, Thailand Duration: 2007 Nov 21 → 2007 Nov 23

Other

Other	6th International Conference on Environmental Informatics, ISEIS 2007
Country	Thailand
City	Bangkok
Period	07/11/21 → 07/11/23

Keywords

Ammonium
Down-flow hanging sponge (dhs) reactor
Low cost
Nitrogen pollution
Nitrogen re moval process

ASJC Scopus subject areas

Environmental Engineering
Renewable Energy, Sustainability and the Environment
Management, Monitoring, Policy and Law
Water Science and Technology

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Cite this

Chuang, H. P., Yamaguchi, T., Tukar, M., Harada, H., & Ohashi, A. (2014). Mitigation of nitrogen pollution in water body by incorporating the dhs (down-flow hanging sponge) systems and autotrophic nitrogen removal technologies. Paper presented at 6th International Conference on Environmental Informatics, ISEIS 2007, Bangkok, Thailand.

Mitigation of nitrogen pollution in water body by incorporating the dhs (down-flow hanging sponge) systems and autotrophic nitrogen removal technologies. / Chuang, Hui Ping; Yamaguchi, Takashi; Tukar, Madan; Harada, Hideki; Ohashi, Akiyoshi.

2014. Paper presented at 6th International Conference on Environmental Informatics, ISEIS 2007, Bangkok, Thailand.

Research output: Contribution to conference › Paper

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AU - Chuang, Hui Ping

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AU - Tukar, Madan

AU - Harada, Hideki

AU - Ohashi, Akiyoshi

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AB - Nitrogen pollution is gathering increased attention due to well-known environmental hazards resulting from overloading of nutrients. Conventional process of nitrogen removal by nitrification and denitrification requires considerable amount of energy and cost for aeration and carbon supply. Several novel and cost-effective biological nitrogen removal processes were developed; however, there were still lots of problems associated with pervious developed reactor systems. In this study application of DHS reactor for nitrogen-removal process could provide the maximum nitrogen-removal efficiency under lower expenditure. The concentrations of nitrogen compounds in this system were maintained below 8 mg N/L in effluent under the nitrogen loading rate of 1.51 kg N/m3-day. In addition, no withdraw sludge was observed in a DHS, decreasing further the cost for post-treatment.

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KW - Nitrogen re moval process

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