Nitrogen removal from on-site treated anaerobic effluents using intermittently aerated moving bed biofilm reactors at low temperatures

Luostarinen, Sari; Luste, Sami; Valentín, Lara; Rintala, Jukka

doi:10.1016/j.watres.2006.02.022

Cited by 116 publications

(53 citation statements)

References 31 publications

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“…The total system removed over 92% of COD total ; 96% of COD suspended 89% of COD colloidal and 80% of COD soluble . These results are similar to those reported for UASB-septic tank in combination with MBBR treating black wastewater [13]. The combined system removed 92% of COD total and 99% of BOD 7 .…”

Section: Discussionsupporting

confidence: 88%

“…Intermittently aerated MBBR treating anaerobically pretreated wastewaters at an OLR of 0.023-0.093 kg COD m -3 day -1 was investigated by Luostarinen et al [13]. The reactor removed 57% of total nitrogen (TN).…”

Section: Discussionmentioning

confidence: 99%

“…The carrier is suspended and moves freely in the reactor. The MBBR has been applied for organic matter removal [11], for nitrification [12], and for nutrient (N and P) removal [13].…”

Section: Introductionmentioning

confidence: 99%

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Treatment of domestic wastewater in an up-flow anaerobic sludge blanket reactor followed by moving bed biofilm reactor

Tawfik

El‐Gohary

Temmink

2009

Bioprocess Biosyst Eng

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The performance of a laboratory-scale sewage treatment system composed of an up-flow anaerobic sludge blanket (UASB) reactor and a moving bed biofilm reactor (MBBR) at a temperature of (22-35°C) was evaluated. The entire treatment system was operated at different hydraulic retention times (HRT's) of 13.3, 10 and 5.0 h. An overall reduction of 80-86% for COD total ; 51-73% for COD colloidal and 20-55% for COD soluble was found at a total HRT of 5-10 h, respectively. By prolonging the HRT to 13.3 h, the removal efficiencies of COD total , COD colloidal and COD soluble increased up to 92, 89 and 80%, respectively. However, the removal efficiency of COD suspended in the combined system remained unaffected when increasing the total HRT from 5 to 10 h and from 10 to 13.3 h. This indicates that, the removal of COD suspended was independent on the imposed HRT. Ammonia-nitrogen removal in MBBR treating UASB reactor effluent was significantly influenced by organic loading rate (OLR). 62% of ammonia was eliminated at OLR of 4.6 g COD m -2 day -1 . The removal efficiency was decreased by a value of 34 and 43% at a higher OLR's of 7.4 and 17.8 g COD m -2 day -1 , respectively. The mean overall residual counts of faecal coliform in the final effluent were 8.9 9 10 4 MPN per 100 ml at a HRT of 13.3 h, 4.9 9 10 5 MPN per 100 ml at a HRT of 10 h and 9.4 9 10 5 MPN per 100 ml at a HRT of 5.0 h, corresponding to overall log 10 reduction of 2.3, 1.4 and 0.7, respectively. The discharged sludge from UASB-MBBR exerts an excellent settling property. Moreover, the mean value of the net sludge yield was only 6% in UASB reactor and 7% in the MBBR of the total influent COD at a total HRT of 13.3 h. Accordingly, the use of the combined UASB-MBBR system for sewage treatment is recommended at a total HRT of 13.3 h.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

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Treatment of domestic wastewater in an up-flow anaerobic sludge blanket reactor followed by moving bed biofilm reactor

Tawfik

El‐Gohary

Temmink

2009

Bioprocess Biosyst Eng

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“…In the current study, the value was 3.5 in aeration conditions, falling to near zero in anoxic conditions. Moreover, according to Luostarinen et al (2006), anaerobic pretreatment produces compounds capable of further decomposition, which are useful for biological removal of nitrogen compounds. Our reactor also demonstrated this advantage.…”

Section: Removal Of Nitrogen Compoundsmentioning

confidence: 99%

Simultaneous removal of nutrients in a novel anaerobic–anoxic/aerobic sequencing reactor: removal of nutrients in a novel reactor

Azhdarpoor

Mohammadi

Dehghani

2015

Int. J. Environ. Sci. Technol.

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Discharging wastewater contaminated with nitrogen and phosphorus compounds (nutrients) can be harmful to both human health and the environment. The present study investigated the efficiency of removing total nitrogen, total phosphate, and chemical oxygen demand using a novel reactor design. The reactor was an anaerobic-anoxic/aerobic sequencing batch reactor with continuous influent and discontinuous outlet. The operation consisted of four phases. Phases 3 and 4 had mixing cycles, whereas phases 1 and 2 only had aeration, settling, and discharge cycles. Phase 4 was the most effective. The average removal efficiencies for chemical oxygen demand, NH 4? , total nitrogen, and total phosphate in Phase 4 were 92, 91, 86, and 85 %, respectively. This phase comprised 225 min of intermittent aeration time, 165 min of intermittent mixing time, and 90 min of settling and discharge. In addition to high efficiency in nutrient removal, the reactor had other advantages, including continuous flow and performance in all phases.

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“…One of the important factors affecting water quality is the enrichment of nutrients in water bodies [1] . Wastewater with high levels of organic matter (COD) Phosphorus (P) and Nitrogen (N) cause several problems, such as eutrophication, oxygen consumption and toxicity, when discharged to the environment [2] . It is, therefore, necessary to remove these substances from wastewaters for reducing their harm to environments [3] .…”

Section: Introductionmentioning

confidence: 99%

Application of Moving Bed Biofilm Process for Biological Organics and Nutrients from Municipal Wastewater

Kermani¹,

Bina²,

Movahedian³

et al. 2008

American J. of Environmental Sciences

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Abstract:In this study, experiments have been conducted to evaluate the organics and nutrients removal from synthetic wastewater by a laboratory scale moving bed biofilm process. For nutrients removal, moving bed biofilm process has been applied in series with anaerobic, anoxic and aerobic units in four separate reactors. Moving bed biofilm reactors were operated continuously at different loading rates of nitrogen and Phosphorus. During optimum conditions, close to complete nitrification with average ammonium removal efficiency of 99.72% occurred in the aerobic reactor. In the aerobic reactor, the average specific nitrification rate was 1.8 g NO x -N kg VSS. The results of the average effluent soluble COD concentration from each reactor showed that denitrification process in the second anoxic reactor consumed most of the biodegradable organic matter. As seen from the results, denitrification rate has increased with increasing NO x -N loading in the second anoxic reactor. The aerobic phosphate removal rate showed a good correlation to the anaerobic phosphate release rate. Moreover, phosphate removal rate showed a strong correlation to the phosphate loading rate in the aerobic reactor. In optimum conditions, the average SCOD, total nitrogen and phosphorus removal efficiencies were 96.9, 84.6 and 95.8%, respectively. This study showed that the moving bed biofilm process could be used as an ideal and efficient option for the total nutrient removal from municipal wastewater.

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Nitrogen removal from on-site treated anaerobic effluents using intermittently aerated moving bed biofilm reactors at low temperatures

Cited by 116 publications

References 31 publications

Treatment of domestic wastewater in an up-flow anaerobic sludge blanket reactor followed by moving bed biofilm reactor

Treatment of domestic wastewater in an up-flow anaerobic sludge blanket reactor followed by moving bed biofilm reactor

Simultaneous removal of nutrients in a novel anaerobic–anoxic/aerobic sequencing reactor: removal of nutrients in a novel reactor

Application of Moving Bed Biofilm Process for Biological Organics and Nutrients from Municipal Wastewater

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