Anaerobic-Aerobic Treatment of Municipal Solid Waste Leachate

Borzacconi, Liliana; López, Iván; Ohanian, Mauricio; Viñas, M.

doi:10.1080/09593332008616810

Cited by 21 publications

(8 citation statements)

References 7 publications

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“…Aerobic methods are often used as a finishing process for wastes treated anaerobically [59,60]. During aerobic digestion, organic matter is broken down and oxidized into CO 2 in a constantly aerated system [61] (pp.…”

Section: Future Research For Improved Treatmentmentioning

confidence: 99%

“…[38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54]. Aerobic digestion can achieve greater organic matter reduction in both industrial and aquaponic/RAS effluent treatment than anaerobic [24,59]. Sludge production from microbial growth and high treatment costs due to constant aeration are often limiting factors for the large-scale application of aerobic digestion [62].…”

Section: Future Research For Improved Treatmentmentioning

confidence: 99%

“…Sludge production from microbial growth and high treatment costs due to constant aeration are often limiting factors for the large-scale application of aerobic digestion [62]. However, multiple studies have shown greater than 90% COD reduction when aerobic digestion is used as a finishing process after AT has reduced the solids content of a waste stream and performed initial OC reduction [59,60]. An additional benefit of adding an aerobic treatment after the AT of aquaponic/RAS effluent is nitrification to convert NH 4 -N to NO 3 -N for improved plant growth performance [40,43].…”

Section: Future Research For Improved Treatmentmentioning

confidence: 99%

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Anaerobic Mineralization of Recirculating Aquaculture Drum Screen Effluent for Use as a Naturally-Derived Nutrient Solution in Hydroponic Cropping Systems

2021

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Operation and effluent treatment costs are limiting factors for the success of recirculating aquaculture systems (RAS) in meeting seafood demand in the United States. Adopting a capture-and-reuse waste management model similar to terrestrial agriculture farmers would allow RAS farmers to monetize effluent and offset production costs. The moisture content and nutrient profile of RAS effluent makes it a potential option for use as a hydroponic fertilizer. Treatment of RAS waste is needed to mineralize particulate-bound nutrients before becoming a viable hydroponic nutrient solution. Anaerobic treatment (AT), a method used by municipal and agricultural waste treatment facilities to reduce total solids, has been shown to successfully mineralize particulate-bound nutrients from RAS effluent. Continuously mixed anaerobic batch bioreactors were used to evaluate the degree to which AT may mineralize particulate-bound nutrients in solid RAS waste. Concentrations of twelve different macro- and micro-nutrients were analyzed in the waste before and after treatment. Effluent samples were analyzed to determine the fraction of each nutrient in the solid and aqueous forms. This study showed that AT is an effective method to mineralize particulate-bound nutrients in RAS effluent and the mineralization rate data may be used to design a pilot-scaled flow-through RAS effluent treatment system.

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Section: Future Research For Improved Treatmentmentioning

confidence: 99%

Section: Future Research For Improved Treatmentmentioning

confidence: 99%

Section: Future Research For Improved Treatmentmentioning

confidence: 99%

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Anaerobic Mineralization of Recirculating Aquaculture Drum Screen Effluent for Use as a Naturally-Derived Nutrient Solution in Hydroponic Cropping Systems

2021

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“…Future research would benefit from consistent OC measurements in correspondence with TSS and aqueous nutrient concentration measurements to provide a more accurate HRT for a treatment system. Two-stage anaerobic to aerobic treatment is commonly used for municipal and terrestrial agriculture waste [32,33]. This combined approach has been shown to be more effective at reducing TOC and total solids than the individual use of either method [32,33].…”

Section: Future Researchmentioning

confidence: 99%

Towards a Capture and Reuse Model for Aquaculture Effluent as a Hydroponic Nutrient Solution Using Aerobic Microbial Reactors

2021

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Controlled environment agriculture (CEA) technologies are required to meet current and future food production demand as the global population rises, arable land decreases, and minerals for fertilizer production are depleted. Hydroponics and recirculating aquaculture systems (RAS) are intensive production methods that can provide season-independent vegetables and seafood in urban settings but are limited by a reliance on fertilizing solutions made from finite mineral reserves and the treatment and disposal costs of nutrient rich effluent, respectively. The development of a capture and reuse system where RAS effluent is solubilized to become plant-available and utilized as a hydroponic nutrient solution would aid both industries and increase food security in urban food deserts. Aerobic mineralization is used in domestic wastewater treatment to reduce solid content and solubilize particulate-bound nutrients. Preliminary studies have also shown that aerobic mineralization can be an effective method for RAS effluent treatment. Aerobic batch reactors were used to mineralize RAS effluent in this study. Suspended solids reduction achieved in the reactors was measured throughout the experiment and the plant-availability of twelve nutrients was determined before and after treatment. It was shown that aerobic mineralization can effectively reduce particulate-bound solids and solubilize nutrients to increase plant utilization in RAS effluent.

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“…In this process sequence the final aerobic stage serves as post-treatment to improve the final effluent quality (Agdag and Sponza, 2005;Hoilijoki et al, 2000). For instance, Borzacconi et al (1999) loaded a UASB at an OLR of 20 kg COD/m³.day at an HRT of 2 days and achieved a COD removal greater than 80%; the subsequent aerobic rotating biological contactor achieved 72% COD removal. Another process advantage is the possibility of removing ammonia from the leachate in the aerobic step, but it is known that high influent COD promotes heterotrophic growth and inhibits ammonium oxidation (Cheng and Chen, 1994;Hanaki et al, 1990).…”

Section: Introductionmentioning

confidence: 99%

Continuous treatment of the organic fraction of municipal solid waste in an anaerobic two-stage membrane process with liquid recycle

Trzcinski

Stuckey

2009

Water Research

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The stability of a two-stage anaerobic membrane process was investigated at different organic loading rates (OLR) and Hydraulic Retention Times (HRT) over 200 days. The Hydrolytic Reactor (HR) was fed semi-continuously with the Organic Fraction of Municipal Solid Waste (OFMSW), while the leachate from the HR was fed continuously to two Submerged Anaerobic Membrane Bioreactors (SAMBR1 and 2). The Total COD (TCOD) of the leachate varied over a wide range, typically between 4000 and 26,000 mg/L while the Soluble COD (SCOD) in the permeate was in the range 400-600 mg/L, achieving a COD removal greater than 90% at a HRT of 1.6-2.3 days in SAMBR1. The operation was not sustainable below this HRT due to a membrane flux limitation at 0.54-0.78 L/m².h (LMH), which was linked to the increasing MLTSS. SCOD in the recycled permeate did not build up indicating a slow degradation of recalcitrants over time. SAMBR2 was run in parallel with SAMBR1 but its permeate was treated aerobically in an Aerobic Membrane Bioreactor (AMBR). The AMBR acted as a COD-polishing and ammonia removal step. About 26% of the recalcitrant SCOD from SAMBR2 could be aerobically degraded in the AMBR. In addition, 97.7 % of the ammonia-nitrogen was converted to nitrate in the AMBR at a maximum nitrogen loading rate of 0.18 kg NH 4 +-N/m³.day. GC-MS analysis was performed on the reactor effluents to determine their composition and what compounds were recalcitrant.

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Anaerobic-Aerobic Treatment of Municipal Solid Waste Leachate

Cited by 21 publications

References 7 publications

Anaerobic Mineralization of Recirculating Aquaculture Drum Screen Effluent for Use as a Naturally-Derived Nutrient Solution in Hydroponic Cropping Systems

Anaerobic Mineralization of Recirculating Aquaculture Drum Screen Effluent for Use as a Naturally-Derived Nutrient Solution in Hydroponic Cropping Systems

Towards a Capture and Reuse Model for Aquaculture Effluent as a Hydroponic Nutrient Solution Using Aerobic Microbial Reactors

Continuous treatment of the organic fraction of municipal solid waste in an anaerobic two-stage membrane process with liquid recycle

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