Heterotrophic denitrification on granular anammox SBR treating urban landfill leachate

Ruscalleda, Maël; López, H.; Ganigué, Ramón; Puig, Sebastià; Balaguer, M. Dolors; Colprim, Jesús

doi:10.2166/wst.2008.544

Cited by 95 publications

(34 citation statements)

References 12 publications

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“…During steady-state period (days 169-230), the influent BOD 5 concentrations were measured as 60-70 mg l -1 and the removal efficiencies were around 20% (data not shown). These relatively low organic matter removal efficiencies could be attributed to the presence of non-biodegradable or slowly biodegradable organic matter in the test reject water (Ruscalleda et al 2008). Consequently, denitrifiers which coexist with anammox bacteria could not consume such organic matters for heterotrophic denitrification.…”

Section: Organic Matter Removalmentioning

confidence: 99%

“…The relatively lower nitrate/ ammonium ratio might be related to heterotrophic denitrification. However, Ruscalleda et al (2008) considered that denitrifiers could coexist with anammox bacteria and play an important role on treating low C/N ratio wastewaters with high quantities of slowly-biodegradable organic carbon, such as reject water, digester liquor and landfill leachate. In treating such wastewaters, conventional heterotrophic denitrification is limited due to the low availability of easily biodegradable organic matter.…”

Section: Effect Of Ph and Inhibition Of Free Ammoniamentioning

confidence: 99%

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Reject water treatment by improvement of whole cell anammox entrapment using polyvinyl alcohol/alginate gel

et al. 2011

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Reject water treatment performance was investigated by whole cell anammox sludge entrapped polyvinyl alcohol/sodium alginate gel in the stirred tank reactor (STR). The whole experiment was conducted through Phase 1 and Phase 2 in which synthetic wastewater and modified reject water were used as feeding medium, respectively. The anammox reactor demonstrated quick start-up after 22 days as well as stable and relatively high nitrogen removal rate of more than 8.0 kg-N m(-3) day(-1) during the two both phases even under moderately low temperature of 25 ± 0.5°C during the last 2 months of Phase 2. The matured brownish red PVA beads had good characteristics with buoyant density of 1.10 g cm(-3), settling velocity of 141 m h(-1) and diameter of 4 mm. The bacterial community was identified by 16S rDNA analysis revealing the concurrent existence of KSU-1 and new kind anammox bacterium Kumadai-I after changing influent from synthetic wastewater to reject water. It was speculated that Kumadai-I might play a role as "promotion" factor together with KSU-1 on high nitrogen removal rate. These results demonstrate the potential application of whole cell anammox entrapment by PVA/alginate gel for achieving stable and high-rate nitrogen removal from high ammonium with low C/N ratio contained wastewaters, such as reject water, digester liquor or landfill leachate.

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Section: Organic Matter Removalmentioning

confidence: 99%

Section: Effect Of Ph and Inhibition Of Free Ammoniamentioning

confidence: 99%

Reject water treatment by improvement of whole cell anammox entrapment using polyvinyl alcohol/alginate gel

et al. 2011

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“…The relatively higher nitrite/ammonium ratio and lower nitrate/ammonium ratio in Table 2 might be related to heterotrophic denitrification. However, Ruscalleda et al (2008) considered that anammox bacteria could coexist with denitrifiers and play an important role in treating low C/N ratio wastewater with high quantities of slowly-biodegradable organic carbon, such as digested liquor and landfill leachate. In treating such wastewaters, conventional heterotrophic denitrification is limited by the low availability of easily biodegradable organic matter.…”

Section: Comparison Of Nitrogen Removal Rate With Other Studiesmentioning

confidence: 99%

High-rate nitrogen removal from livestock manure digester liquor by combined partial nitritation–anammox process

et al. 2009

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In this study, combination of a partial nitritation reactor, using immobilized polyethylene glycol (PEG) gel carriers, and a continuous stirred granular anammox reactor was investigated for nitrogen removal from livestock manure digester liquor. Successful nitrite accumulation in the partial nitritation reactor was observed as the nitrite production rate reached 2.1 kg-N/m(3)/day under aerobic nitrogen loading rate of 3.8 kg-N/m(3)/day. Simultaneously, relatively high free ammonia concentrations (average 50 mg-NH(3)/l) depressed the activity of nitrite oxidizing bacteria with nitrate concentration never exceeding 3% of TN concentration in the effluent of the partial nitritation reactor (maximum 35.2 mg/l). High nitrogen removal rates were achieved in the granular anammox reactor with the highest removal rate being 3.12 kg-N/m(3)/day under anaerobic nitrogen loading rate of 4.1 kg-N/m(3)/day. Recalcitrant organic compounds in the digester liquor did not impair anammox reaction and the SS accumulation in the granular anammox reactor was minimal. The results of this study demonstrated that partial nitritation-anammox combination has the potential to successfully remove nitrogen from livestock manure digester liquor.

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“…Removal of organic matter could avoid the negative effects on the anammox process (Ruscalleda et al 2008). To achieve improved quality of the final effluent, membrane processes, such as microfiltration (MF), ultrafiltration (UF), reverse osmosis (RO), and forward osmosis (FO), are also applied in landfill leachate treatment (Cath et al 2006, Renou et al 2008.…”

Section: Introductionmentioning

confidence: 99%

Resource recovery by osmotic bioelectrochemical systems towards sustainable wastewater treatment

Qin

2017

Environ. Sci.: Water Res. Technol.

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(academic)Recovering valuable resources from wastewater will transform wastewater management from a treatment focused to sustainability focused strategy, and creates the need for new technology development. An innovative treatment concept -osmotic bioelectrochemical system (OsBES), which is based on cooperation between bioelectrochemical systems (BES) and forward osmosis (FO), has been introduced and studied in the past few years. An OsBES can accomplish simultaneous treatment of wastewater and recovery of resources such as nutrient, energy, and water (NEW). The cooperation can be accomplished in either an integrated (osmotic microbial fuel cells, OsMFC) or coupled (microbial electrolysis cell-forward osmosis system, MEC-FO) configuration.In OsMFC, higher current generation than regular microbial fuel cell (MFC) was observed, resulting from the lower resistance of FO membrane. The electricity generation in OsMFC could greatly inhibit the reverse salt flux. Besides, ammonium removal was successfully demonstrated in OsMFC, making OsMFCs a promising technology for "NEW recovery" (NEW: nutrient, energy and water). For the coupled OsBES, an MEC-FO system was developed. The MEC produced an ammonium bicarbonate draw solute via recovering ammonia from synthetic organic solution, which was then applied in the FO for extracting water from the MEC anode effluent. The system has been advanced with treating landfill leachate. A mathematical model developed for ammonia removal/recovery in BES quantitatively confirmed that the NH4 + ions serve as effective proton shuttles across cation exchange membrane (CEM). Resource Recovery by Osmotic Bioelectrochemical Systems towards Sustainable Wastewater TreatmentMohan Qin Abstract (general audience)Nowadays, wastewater is no longer considered as waste. Instead, it is a pool for different kinds of resources, such as nutrient, energy, and water (NEW). Various technologies were developed to achieve NEW recovery from wastewater. A novel concept, osmotic bioelectrochemical system (OsBES) has been introduced and studied in the past few years. OsBES is based on two technologies: bioelectrochemical systems (BES) and forward osmosis (FO); and the corporation between these two technologies could accomplish simultaneous wastewater treatment and resource recovery. We investigated two kinds of OsBES: one is osmotic microbial fuel cells (OsMFC), and the other is microbial electrolysis cell-forward osmosis system (MEC-FO). For OsMFC, a mathematical model was built to understand the internal resistance, which will affect the current generation according to Om's law (I=U/R). The salt transport across the cation exchange membrane (CEM) is related to the current generation. The ion transport, especially ammonium/ammonia transport, across CEM membrane in BES was modelled, which will help the BES design and operation for ammonia recovery systems. The system performance for wastewater treatment and resource recovery in MEC-FO was fully investigated with both synthetic wastewater and landfill leach...

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Heterotrophic denitrification on granular anammox SBR treating urban landfill leachate

Cited by 95 publications

References 12 publications

Reject water treatment by improvement of whole cell anammox entrapment using polyvinyl alcohol/alginate gel

Reject water treatment by improvement of whole cell anammox entrapment using polyvinyl alcohol/alginate gel

High-rate nitrogen removal from livestock manure digester liquor by combined partial nitritation–anammox process

Resource recovery by osmotic bioelectrochemical systems towards sustainable wastewater treatment

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