Partial nitrification performance and mechanism of zeolite biological aerated filter for ammonium wastewater treatment

Yang, Yongyuan; Chen, Zhenguo; Wang, Xiaojun; Zheng, Lei; Gu, Xi

doi:10.1016/j.biortech.2017.05.151

Cited by 90 publications

(33 citation statements)

References 26 publications

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“…The growth of the biofilm in seven months did not agree with other studies on zeolite. Yang et al showed that a modified zeolite could obtain a stable biofilm after only 30 days of operation, similar to the results reported by Li et al This can be explained by the higher tensor stress developed in a moving bed SBR compared to a biofilter, which decreased the rate of biofilm formation on the zeolite.…”

Section: Resultssupporting

confidence: 65%

Nitrification in the presence of sulfide and organic matter in a sequencing moving bed biofilm reactor (SMBBR) with zeolite as biomass carrier

Huiliñir

Fuentes

Esposito

et al. 2019

J of Chemical Tech & Biotech

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It has recently come to our attention that the Acknowledgements section has been missed to include in the article 'Nitrification in the presence of sulfide and organic matter in a sequencing moving bed biofilm reactor (SMBBR) with zeolite as biomass carrier' REFERENCE 1 Huiliñir C, Fuentes V, Esposito G, Montalvo S and Guerrero L, Nitrification in the presence of sulfide and organic matter in a sequencing moving bed biofilm reactor (SMBBR) with zeolite as biomass carrier.

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Section: Resultssupporting

confidence: 65%

Nitrification in the presence of sulfide and organic matter in a sequencing moving bed biofilm reactor (SMBBR) with zeolite as biomass carrier

Huiliñir

Fuentes

Esposito

et al. 2019

J of Chemical Tech & Biotech

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“…23 Studies on the effect of FA on AOB in ZBAF showed that pH in the range 7.0 to 8.5 could maintain highly effective nitritation and that influent pH should not be >9.0. 3,17 Moreover, the literature reports that most bacterial activity decreases at a pH <6.5 and that ammonia gas is generated at pH >8.5. 19 In this study, the total alkalinity: ammonium ratio was set as 4.5 and a suitable ratio from the mixed alkalinity donor for ZBAF-CANON which depends on the influent pH value.…”

Section: Resultsmentioning

confidence: 99%

“…24 The literature reports that zeolite can maintain large areas of biofilm and lots of microorganisms attached to the biofilm. 17 By these two special features, stable nitritation and ammonium adsorption-desorption are kept in dynamic equilibrium in a zeolite reactor when continuously fed with ammonium; 25 the main physical and chemical reactions are shown below in Eqns(7-8). 26 Nitritation on the biofilm: NH+ 4 + 1.5O 2 → NO-2 + 2H + + H 2 O 7Adsorption-desorption on the zeolite:…”

Section: Zeolite Application Analysismentioning

confidence: 99%

Zeolite biofilm aeration filter plays a pre‐nitritation role in autotrophic nitrogen removal from iron oxide red wastewater

Feng

Wang

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND: The completely autotrophic nitrogen removal over nitrite (CANON) system has excellent performance in treating ammonium-rich wastewater and it depends on ammonia oxidizing bacteria (AOB) working together with anammox bacteria in a reactor. Higher ammonium nitrogen loading requires higher aeration to provide sufficient dissolved oxygen (DO) for nitritation, whereas high-strength aeration in theCANON will destroy the sludge structure and inhibit the activity of anammox bacteria. The present study uses a stable pre-nitritation system to reduce a part of nitritation and also decrease aeration intensity in the CANON. RESULTS: Continuous aeration to maintain the DO concentration between 1.5 and 4.3 mg L-1 in the CANON achieved a stable nitrogen removal rate (1.22 kg N m-3 d-1) from iron oxide red wastewater with 400-1016 mg N L-1 after 183 days of operation. Using a mixed alkalinity donor [sodium carbonate (Na 2 CO 3) and bicarbonate (NaHCO 3)] in the combined system can save ≈14.1-28.2% of the alkalinity cost compared with using NaHCO 3 only. CONCLUSIONS: A zeolite biofilm aeration filter (ZBAF) used in a pre-nitritation process can tolerate high DO concentration of ≤6.5 mg L-1 for nitritation and avoid all of the nitritation taking place in the CANON system. This can protect the sludge structure and anammox bacteria from high-strength aeration erosion.

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“…In this study, a biological aerated filter (BAF) that is filled with zeolite media is used to treat wastewater with low concentrations of ammonium. Previous studies on BAFs improved the efficiency of organic-matter removal and nitrification [10][11][12][13][14][15][16][17][18][19]. When zeolite media was used in BAFs, nitrification occurred at high-influent conditions and showed high efficiency.…”

Section: Introductionmentioning

confidence: 96%

“…Li et al [18] reported that modified zeolite more beneficial to the specific immobilization of AOB than natural zeolite, nitrite nitrogen accumulating was observed. Yang et al [19] enhanced the partial-nitrification efficiency through using ZBAFs. However, these previous studies were performed under normal or high influent concentrations.…”

Section: Introductionmentioning

confidence: 99%

Nitrification of low concentration ammonia nitrogen using zeolite biological aerated filter (ZBAF)

Kim

Lee

Choi

et al. 2019

Environmental Engineering Research

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This study focuses on nitrification through a biological aerated filter (BAF) that is filled with a zeolite medium at low concentrations of ammonia. The zeolite medium consists of natural zeolite powder. The BAF is operated under two types of media, which are a ball-type zeolite medium and expanded poly propylene (EPP) medium. Nitrification occurred in the zeolite BAF (ZBAF) when the influent concentration of ammonia nitrogen was 3 mg L-1, but the BAF that was filled with an EPP medium did not experience nitrification. The ammonia nitrogen removal efficiency of ZBAF was 63.38% and the average nitrate nitrogen concentration was 1.746 mg/L. The ZBAF was tested again after a comparison experiment to treat pond water, and municipal wastewater mixed pond water. The ZBAF showed remarkable ammonia-nitrogen treatment at low concentration and low temperature. During this period, the average ammonia nitrogen removal efficiency was 64.56%. Especially, when water temperature decreased to 4.7℃, ammonia nitrogen removal efficiency remained 79%. On the other hand, the chemical-oxygen demand (COD) and phosphorus-removal trends were different. The COD and phosphorus did not show as efficient treatment as the ammonia-nitrogen treatment.

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Partial nitrification performance and mechanism of zeolite biological aerated filter for ammonium wastewater treatment

Cited by 90 publications

References 26 publications

Nitrification in the presence of sulfide and organic matter in a sequencing moving bed biofilm reactor (SMBBR) with zeolite as biomass carrier

Nitrification in the presence of sulfide and organic matter in a sequencing moving bed biofilm reactor (SMBBR) with zeolite as biomass carrier

Zeolite biofilm aeration filter plays a pre‐nitritation role in autotrophic nitrogen removal from iron oxide red wastewater

Nitrification of low concentration ammonia nitrogen using zeolite biological aerated filter (ZBAF)

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