Quantification of denitrification potential in carbonaceous trickling filters

Biesterfeld, Sidney; Farmer, Greg; Figueroa, Linda; Parker, Denny; Russell, Phil

doi:10.1016/s0043-1354(03)00302-6

Cited by 29 publications

(10 citation statements)

References 11 publications

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“…Rate of nitrification in the biofilm reactor was 4.8 g NH4 + -N/m 2 .day and the rate of denitrification was 5.04 g NO3 --N/m 2 .day. Similar denitrification rate was reported by Biesterfeld et al (2003) in a trickling filter. A nitrification rate of 1.8 g N/m 2 .day was reported by Babu et al (2010) in a stabilization pond with an ammonia removal of just 50% as compared to the 95% ammonia removal observed in the present study using rope media in RBBR.…”

Section: Nitrogen and Organic Matter Transformationsupporting

confidence: 89%

Organic matter and nitrogen removal in a hybrid upflow anaerobic sludge blanket—Moving bed biofilm and rope bed biofilm reactor

Chatterjee

Ghangrekar

Rao

2016

Journal of Environmental Chemical Engineering

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Section: Nitrogen and Organic Matter Transformationsupporting

confidence: 89%

Organic matter and nitrogen removal in a hybrid upflow anaerobic sludge blanket—Moving bed biofilm and rope bed biofilm reactor

Chatterjee

Ghangrekar

Rao

2016

Journal of Environmental Chemical Engineering

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“…Intact biofilm samples from a carbonaceous trickling filter in a bench-scale reactor were investigated by Biesterfeld et al (2003). The reactors were fed with sterilised wastewater effluent and spiked with nitrate to a final concentration of 16-18 mg•ℓ , indicating that denitrification is possible inside the biofilm of systems with dissolved oxygen in the bulk liquid.…”

Section: Introductionmentioning

confidence: 99%

Anaerobic ammonium oxidation in the old trickling filters at Daspoort Wastewater Treatment Works

Wilsenach¹,

Burke²,

Radebe³

et al. 2014

WSA

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The century-old trickling filters at the Daspoort Wastewater Treatment Works in Pretoria (Gauteng, South Africa) are known for their remarkable removal of nitrogen from municipal wastewater. Our study was conducted to identify the microbiological processes responsible for this phenomenon and to establish whether anammox bacteria may be involved. An aerobic and anaerobic bench top reactor, both inoculated with biofilm-covered stones from one of the filters, were spiked with ammonia-nitrogen (NH 4 + -N) and nitrite-nitrogen (NO 2 − -N). These reactors were subsequently monitored by conducting stoichiometric analyses of chemical oxygen demand (COD), NH 4 + -N, NO 2 − -N, and nitrate-nitrogen (NO 3 − -N). In the aerobic reactor, the COD concentration decreased over the 56 h batch reaction period and nitrification was revealed by a decrease in NH 4 + -N and NO 2 − -N concentrations. However, the NO 3 − -N concentration showed no notable decrease. In contrast, in the anaerobic reactor the concentrations of COD, NH 4 + -N, NO 2ˉ-N, NO 3ˉ-N, as well as total nitrogen decreased during the batch reaction period. The decrease of both the NH 4 + -N and NO 2 − -N concentrations, the latter to zero under anaerobic conditions, suggested that, in addition to heterotrophic denitrification, anaerobic ammonium oxidation (anammox) may also occur in the trickling filter biofilm. This was highlighted by the observation that ammonium removal in the anaerobic reactor stopped as soon as the nitrite concentration became zero. The ratio of nitrite:ammonium removal was 1.33 on average, which conforms to anammox behaviour. Gene sequence analysis was used to test for the possible presence of anammox bacteria in the trickling filter biofilm. Genomic DNA was extracted from trickling filter humus sludge and the polymerase chain reaction (PCR) was used to amplify taxonomically informative 16S rRNA gene sequences, using primers specific for selected anammox species. Subsequent sequence analysis, including using the online Basic Local Alignment Search Tool (BLAST), and constructing a phylogenic tree using a heuristic search strategy for Maximum Parsimony analysis, confirmed the presence of an anammox bacterium closely related to Candidatus 'Brocadia anammoxidans' and Candidatus 'Brocadia fulgida' on the biofilm-covered stones of the Daspoort trickling filters.

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“…Therefore, It was quite sure that the continuous internal circulation of liquor through sandfilter could contribute to enhancement of biological nutrient removal. Under 60 g/m 3 .d of NH4-N loading rate, the NH4-N level in final effluent was relatively low and constant (below 20 mg/L) and over 80 % of nitrogen removal was maintained in spite of loading rate increase up to 100 g/m 3 .d. However, the treatment efficiency of nitrogen was deteriorated with further increase of loading rate.…”

mentioning

confidence: 96%

“…However, the treatment efficiency of nitrogen was deteriorated with further increase of loading rate. Based on this result, an optimum loading rate of nitrogen for the process would be 100 g/m 3 . .…”

mentioning

confidence: 99%

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Swine Wastewater Treatment Using Continuos Circulation Biofilm Process

Goh¹,

Cha²

2007

Journal of Animal Science and Technology

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A submerged biofilm sequencing batch reactor (SBSBR) process, which liquor was internally circulated through sandfilter, was designed, and performances in swine wastewater treatment was evaluated under a condition of no external carbon source addition. Denitrification of NOx-N with loading rate in vertical and slope type of sandfilter was 19 % and 3.8 %, respectively, showing approximately 5 times difference, and so vertical type sandfilter was chosen for the combination with SBSBR. When the process was operated under 15 days HRT, 105 L/hr.m 3 of internal circulation rate and 54 g/m 3 .d of NH4-N loading rate, treatment efficiencies of STOC, NH4-N and TN (as NH4-N plus NOx-N) was 75 %, 97 % and 85 %, respectively. By conducting internal circulation through sandfilter, removal performances of TN were enhanced by 14 %, and the elevation of nitrogen removal was mainly attributed to occurrence of denitrification in sandfilter. Also, approximately 57 % of phosphorus was removed with the conduction of internal circulation through sandfilter, meanwhile phosphorus concentration in final effluent rather increased when the internal circulation was not performed. Therefore, It was quite sure that the continuous internal circulation of liquor through sandfilter could contribute to enhancement of biological nutrient removal.Under 60 g/m 3.d of NH4-N loading rate, the NH4-N level in final effluent was relatively low and constant (below 20 mg/L) and over 80 % of nitrogen removal was maintained in spite of loading rate increase up to 100 g/m 3 .d. However, the treatment efficiency of nitrogen was deteriorated with further increase of loading rate. Based on this result, an optimum loading rate of nitrogen for the process would be 100 g/m 3 .d.

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Quantification of denitrification potential in carbonaceous trickling filters

Cited by 29 publications

References 11 publications

Organic matter and nitrogen removal in a hybrid upflow anaerobic sludge blanket—Moving bed biofilm and rope bed biofilm reactor

Organic matter and nitrogen removal in a hybrid upflow anaerobic sludge blanket—Moving bed biofilm and rope bed biofilm reactor

Anaerobic ammonium oxidation in the old trickling filters at Daspoort Wastewater Treatment Works

Swine Wastewater Treatment Using Continuos Circulation Biofilm Process

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