Anaerobic granular reactors for the treatment of dairy wastewater: A review

Karadağ, Doğan; Köroğlu, Emre; Özkaya, Bestami; Çakmakçı, Mehmet; Heaven, S.; Banks, C.J.; Serna‐Maza, Alba

doi:10.1111/1471-0307.12252

Cited by 36 publications

(17 citation statements)

References 101 publications

(216 reference statements)

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“…The VFA concentration was low in condensate water (38 mg L -1 ) and in cheese whey (1-41 mg L -1 ), while it was moderate in OFMSW leachate (56-158 mg L -1 ), and high in slaughterhouse liquid waste (820 mg L -1 ). As for the physicochemical characterization, it could be noticed that the results obtained on dairy whey were consistent with other literature studies 6,9,32 , even though a high variability in whey composition emerged, in particular in COD (50-102 g L -1 ) and pH (3.8-6.5) 6 . In 33 , an acidic pH (3.44-3.92) was reported in whey, together with a lower COD concentration (55.3-74.5 g L -1 ) than that of the present work; also PO 4 3-concentration was lower (124 mg L -1 ).…”

Section: Ta B L E 1 -Results Of the Physicochemical Characterization supporting

confidence: 88%

Characterization and BMP Tests of Liquid Substrates for High-rate Anaerobic Digestion

Mainardis

Cabbai

Zannier³

et al. 2018

Chem.Biochem.Eng.Q.

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This work was focused on the physicochemical characterization and biochemical methane potential (BMP) tests of some liquid organic substrates, to verify if they were suitable for undergoing a process of high-velocity anaerobic digestion. The selected substrates were: first and second cheese whey, organic fraction of municipal solid waste (OFMSW) leachate, condensate water and slaughterhouse liquid waste. Firstly, a physicochemical characterization was performed, using traditional and macromolecular parameters; then, batch anaerobic tests were carried out, and some continuous tests were planned.The results revealed that all the analyzed substrates have a potential to be anaerobically treated. Valuable information about treatment rate for a high-velocity anaerobic digestion process was obtained. Start-up of a lab-scale UASB reactor, treating diluted cheese whey, was successfully achieved with good COD removal efficiency. These preliminary results are expected to be further investigated in a successive phase, where continuous tests will be conducted on condensate water and OFMSW leachate.

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Section: Ta B L E 1 -Results Of the Physicochemical Characterization supporting

confidence: 88%

Characterization and BMP Tests of Liquid Substrates for High-rate Anaerobic Digestion

Mainardis

Cabbai

Zannier³

et al. 2018

Chem.Biochem.Eng.Q.

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“…A shorter HRT will reduce reactor volume, operation and capital costs, making anaerobic digestion a more attractive form of treatment (Ripley et al, 1986). Anaerobic granules have desirable settling characteristics, enabling the biomass to be maintained inside of the reactor, thus making the HRT independent of the SRT (Karadag et al, 2015). Anaerobic digesters that utilize granules are the highest efficiency reactors to treat high strength organic wastewater and produce biogas (Soto et al, 2011;Baeta et al, 2012;Wu et al, 2016).…”

Section: Anaerobic Granular Reactorsmentioning

confidence: 99%

High rate anaerobic digestion of primary and secondary sludge using the static granular bed reactor (SGBR)

Biese

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“…The AG has also been implanted in the treatment of dairy wastewater with high measured removals of carbon, phosphorus and nitrogen (Arrojo et al, 2004;Mañas et al, 2012;Meunier et al, 2016). AG, although very successful in the treatment of food processing wastewater, the more conventionally applied granular reactors to the treatment of dairy wastewater is the UASBs and SGBR (Baloch et al, 2008;Karadag et al, 2015a;McHugh et al, 2003).…”

Section: Granular Treatment Of Food Processing Wastewatermentioning

confidence: 99%

“…The UASB has an advantage of simple construction, low operational cost and high organic removal (Karadag et al, 2015a). UASB has been used to treat food wastewater with a COD removal efficiency ranging between 70-90% (Diamantis and Aivasidis, 2010).…”

Section: Granular Treatment Of Food Processing Wastewatermentioning

confidence: 99%

“…With regards to the cheese wastewater treatment, the most applied biological treatment methods are UASBs and SBRs (Carvalho et al, 2013;Kushwaha et al, 2011). The UASBs simple construction, low operational cost and high organic removal attracted many installations and research for its usage in the treatment of cheese processing wastewater (Karadag et al, 2015a). The UASB effluent generally requires post-treatment to fulfil discharge standards, more recent research focused on enhancing the process by adding SBRs before UASBs or after, or combining the whey with dairy manure or domestic wastewater as ways to enhance the treatment (Rico et al, 2015;Tawfik et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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SB-MBBR Technology: Treatment Strategies for Nitrification in Elevated Carbon Concentration Industrial Wastewater

Al-Ghussain¹

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The dairy processing industry, in specific cheese processing, is a growing sector of the economy world wide. For example, China's demand for milk products projected an increase of 3.2-fold by 2050. While domestically in Canada, an annual increase of 5% has been reported since 2015 projected to continue to 2018. An increase in the demand for milk and dairy products translates to an increase in the produced wastewater. For every 2 L of milk processed 5 L of wastewater is produced, meanwhile, for every 1kg of cheese processed 9 kg of cheese whey is produced requiring the use of an estimated 10 kg of milk. Cheese whey is a by-product generated during the cheese manufacturing processes, with cheese processing wastewater defined as a combined stream of all wastewaters from a cheese processing facility.Cheese processing wastewater can be characterized as medium to high strength wastewater with COD concentrations of above 1000 mg·L -1 . In specific, cheese effluent can display COD concentrations in the range of 2500-5000 mg·L -1 and ammonia concentration in the ranges from 100-140 mg·L -1 -N, and total phosphorus is in the range of 50-60 mg·L -1 -P. Due to the high concentrations of carbon and nutrients in cheese processing wastewater, current stringent provincial regulations applied to municipal wastewater treatment plants restrict the discharge to sewers without prior treatment; leading to an increased demand for decentralized treatment units. Decentralized treatment units like sequencing batch reactors (SBR) gained popularity in cheesewastewater treatment due to their simple construct, reduced building expense and smaller footprint compared to conventional systems. The SBR however, has the potential of discharging floating or settled sludge during the draw or decant stages. The aerobic granular SBRs (AG-SBRs) promoted the formation of granules decreasing the potential of discharge. However, AG-SBRs were found to have problems regarding granular formation. The larger granules in an AG-SBR tended to ii of xii destabilize due to endogenous respiration within the granule resulting in its collapse and washout.While granule size affected nitrogen removal, smaller granules removed more nitrogen than larger granules. Replacing the granules with plastic carriers in an SBR introduced the sequencing batch moving bed biofilm reactor (SB-MBBR). The carriers eliminated the washout problem encountered in AG-SBRs as the biomass is retained on the carriers and remains in the reactor. It was postulated that an anaerobic, aerobic, anoxic (AOA) stage sequence would be ideal for dairy treatment using an SB-MBBR. AOA stage sequence allows for C, N, and P removal from a single reactor by selecting for the phosphorus accumulating organisms (PAOs), and nitrifiers. To date, however, the operation of an SB-MBBR with an AOA stage sequence treating wastewater from the food processing industry, in specific cheese wastewater has not been reported.Wastewater from a cheese making facility in eastern Ontario was modelled in a laboratory setting.The in...

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Anaerobic granular reactors for the treatment of dairy wastewater: A review

Cited by 36 publications

References 101 publications

Characterization and BMP Tests of Liquid Substrates for High-rate Anaerobic Digestion

Characterization and BMP Tests of Liquid Substrates for High-rate Anaerobic Digestion

High rate anaerobic digestion of primary and secondary sludge using the static granular bed reactor (SGBR)

SB-MBBR Technology: Treatment Strategies for Nitrification in Elevated Carbon Concentration Industrial Wastewater

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