Nitrogen removal capacity and carbon demand requirements of partial denitrification/anammox MBBR and IFAS processes

被引：13

作者：

Macmanus, Justin ^{[1
,2
]}

Long, Chenghua ^{[3
]}

Klaus, Stephanie ^{[2
]}

Parsons, Michael ^{[2
]}

Chandran, Kartik ^{[3
]}

De Clippeleir, Haydee ^{[4
]}

Bott, Charles ^{[2
]}

机构：

[1] Virginia Polytech Inst & State Univ, Dept Civil & Environm Engn, Blacksburg, VA 24061 USA

[2] Hampton Roads Sanitat Dist, Virginia Beach, VA USA

[3] Columbia Univ, Dept Earth & Environm Engn, New York, NY USA

[4] Dist Columbia Water & Sewer Author, Washington, DE USA

来源：

WATER ENVIRONMENT RESEARCH | 2022年 / 94卷 / 08期

关键词：

anammox; IFAS; mainstream; MBBR; partial denitrification; ANAEROBIC AMMONIUM OXIDATION; ANAMMOX; TEMPERATURE; NITRITE;

D O I：

10.1002/wer.10766

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A pilot study was conducted to investigate the carbon demand requirements and nitrogen removal capabilities of two mainstream partial denitrification/anammox (PdNA) processes: a two-zone, moving bed biofilm reactor (MBBR) process and an integrated fixed-film activated sludge (IFAS) process. The first MBBR zone conducted PdNA, while the second operated as an anammox zone. Operation of the IFAS process was conducted in two phases. The first phase of the operation involved minor external carbon addition, while the second phase of the operation involved controlled external carbon addition. The MBBR process produced an average effluent TIN concentration and chemical oxygen demand (COD)/TIN ratio of 2.81 +/- 1.21 mg/L and 2.42 +/- 0.77 g/g. The average effluent TIN concentrations and COD/TIN ratios for the IFAS process were 4.07 +/- 1.66 mg/L and 1.08 +/- 0.38 g/g during phase 1 and 3.30 +/- 0.96 mg/L and 2.18 +/- 0.99 g/g during phase 2. Despite having relatively low and unstable partial denitrification (PdN) efficiencies, both mainstream PdNA processes exhibited low effluent TIN concentrations and carbon requirements compared to nitrification/denitrification. Successful operation of the PdNA IFAS process indicates that mainstream PdNA can be implemented with minimal capital costs in a water resource recovery facility's second anoxic zone. Practitioner Points Low effluent TIN concentrations can be maintained in mainstream PdNA MBBR and IFAS processes with low external carbon demand. MBBR and IFAS PdNA processes do not require consistent or high PdN efficiencies to maintain low effluent TIN concentrations. IFAS and MBBR PdNA processes exhibit similar TIN and NH3 removal efficiencies. PdNA can be implemented in a second anoxic zone, using IFAS technology for anammox retention, with minimal capital costs.

引用

页数：13

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