Dairy wastewater treatment using composite membranes

Catenacci, Arianna; Bellucci, Micol; Yuan, Tugui; Malpei, Francesca

doi:10.1016/b978-0-12-816823-3.00009-5

Cited by 8 publications

(6 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While physicochemical approaches have been shown to be effective in removing chemical oxygen demand (COD), they are costly due to the use of chemical coagulants (Kumar et al, 2016). In recent years, membrane technology has emerged as a promising alternative for the treatment of dairy wastewater due to its efficiency in reducing organic compounds (Gong et al 2012;Catenacci et al 2020). Several membrane separation technologies, including reverse osmosis (RO), nanofiltration (NF), ultrafiltration (UF), and microfiltration (MF), have been used to treat dairy wastewater (Ahmad and Ahmed 2014; Gonsalves et al 2023).…”

Section: Introductionmentioning

confidence: 99%

Mitigating Membrane Fouling in Dairy Wastewater Treatment System: Assessing the Effects of Integrated 3DP Turbulence Promoter

Al-Tayawi

Gulyás

Gergely

et al. 2023

Preprint

View full text Add to dashboard Cite

Dairy factories annually generate increasing amounts of wastewater, which can cause eutrophication due to high concentrations of amino acids and lipids. To address this issue, membrane technology has emerged as a promising solution, but membrane fouling remains a significant challenge, since it can couse decreased flux, lessen membrane rejection performance and increased energy demand. This study aimed to reduce membrane fouling by integrated a Three-Dimensional Printed (3DP) turbulence promoter into an ultrafiltration dead-end cell and varying stirring speeds. Two mathematical models, Hermia and Resistance-in-series, were used to analyze the fouling process. According to both models, the cake layer formation model indicated the most prevalent fouling mechanism. The specific energy demand, permeate flux, membrane rejection, and membrane reversible and irreversible resistances were measured, calculated and compared. The results suggest that the combination of integrated 3DP turbulence promoter and high stirring speeds can effectively reduce membrane fouling in a dairy wastewater treatment module.

show abstract

Section: Introductionmentioning

confidence: 99%

Mitigating Membrane Fouling in Dairy Wastewater Treatment System: Assessing the Effects of Integrated 3DP Turbulence Promoter

Al-Tayawi

Gulyás

Gergely

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Recently, membrane technologies have become increasingly prominent in wastewater remediation, offering numerous benefits such as the efficient removal of pollutants, environmental friendliness, cost efficiency, clean and easy operation, flexibility during system design, and compact equipments [4]. Among membrane processes, ultrafiltration (UF) is widely used for the dairy industry due to its good price and performance [1].…”

Section: Introductionmentioning

confidence: 99%

Application of BiVO4/TiO2/CNT Composite Photocatalysts for Membrane Fouling Control and Photocatalytic Membrane Regeneration during Dairy Wastewater Treatment

et al. 2023

View full text Add to dashboard Cite

This study aimed to investigate the performance of composite photocatalytic membranes fabricated by incorporating multiple nanoparticles (TiO2, carbon nanotubes, BiVO4) into polyvinylidene fluoride membrane material for real dairy wastewater treatment. The composite photocatalytic membranes exhibited superior antifouling behavior, lower filtration resistance, better flux, and higher flux recovery ratio than the pristine membrane. Salinity, pH, and lactose concentration are determinant factors that affect filtration resistance and rejection performance during the ultrafiltration of dairy wastewater. Generally, higher irreversible and total resistances and slightly lower chemical oxygen demand (COD) rejections were found at higher salinity (expressed by electric conductivity values of >4 mS/cm) than lower salinity (<4 mS/cm) levels. The presence of lactose in dairy wastewater increased irreversible resistance and severely reduced COD rejection during ultrafiltration due to the ability of lactose to pass through the membranes. It was ascertained that membranes require further treatment after filtrating such wastewater. Lower resistances and slightly better COD rejections were observed at pH 7.5 and pH 9.5 compared to those observed at pH 4. Photocatalytic membranes fouled during the ultrafiltration of real dairy wastewater were regenerated by visible light irradiation. The membrane containing all constituents (i.e., TiO2, carbon nanotubes, and BiVO4) showed the best regeneration performance, exceeding that of the pristine membrane by 30%.

show abstract

“…The dairy industry produces wastewater at many stages of the production process, from primary processing and separation of milk to manufacturing, packing, and distributing the final products [2,3]. Depending on the type of manufactured products, stage of production, and farm/factory size, the wastewater produced is generally composed of milk residues, fats, proteins, lactose and carbohydrates, detergents, and chemical reagents.…”

Section: Introductionmentioning

confidence: 99%

“…Depending on the type of manufactured products, stage of production, and farm/factory size, the wastewater produced is generally composed of milk residues, fats, proteins, lactose and carbohydrates, detergents, and chemical reagents. Additionally, these types of effluents are characterized by significant variations in pH and compounds that may span a wide range of concentrations [3][4][5]. Dairy wastewater is characterized by high nutrient concentration and high levels of biological oxygen demand (BOD) and chemical oxygen demand (COD).…”

Section: Introductionmentioning

confidence: 99%

A Comparison of Biosolids Production and System Efficiency between Activated Sludge, Moving Bed Biofilm Reactor, and Sequencing Batch Moving Bed Biofilm Reactor in the Dairy Wastewater Treatment

et al. 2022

View full text Add to dashboard Cite

Dairy industry wastewater is rich in organic content, presenting a high biodegradability, and therefore biological treatments are widely employed. This study aimed to evaluate biosolids production in three systems: activated sludge (AS), movingbed biofilm reactor (MBBR), and sequencingbatch movingbed biofilm reactor (SBMBBR). Simulated dairy wastewater was used at different organic load rates (OLRs): 1.22, 2.87, and 5.44 gCOD L−1d−1. Besides biosolids production, COD, total carbon (TC), and total nitrogen (TN) removal efficiency was evaluated. Biosolids production was measured in the mixed liquor, carrier-adhered biomass, treated wastewater, and surplus sludge. The operational conditions were kept similar for the three systems, with a carrier filling ratio of 50% for MBBR and SBMBBR. The SBMBBR proved to have better performance in the removal efficiencies of COD, TC, and TN for all OLRs studied. The MBBR presented a similar COD and TC removal efficiency as the SBBR for the two highest OLRs (2.87 and 5.44 gCOD L−1d−1). Concerning biosolids production, the MBBR system produced less biomass and delivered the lowest amount of adhered biomass inside the carriers. The AS treatment generated the highest amount of sludge and offered the worst treatment capability for all OLRs evaluated.

show abstract

Dairy wastewater treatment using composite membranes

Cited by 8 publications

References 69 publications

Mitigating Membrane Fouling in Dairy Wastewater Treatment System: Assessing the Effects of Integrated 3DP Turbulence Promoter

Mitigating Membrane Fouling in Dairy Wastewater Treatment System: Assessing the Effects of Integrated 3DP Turbulence Promoter

Application of BiVO4/TiO2/CNT Composite Photocatalysts for Membrane Fouling Control and Photocatalytic Membrane Regeneration during Dairy Wastewater Treatment

A Comparison of Biosolids Production and System Efficiency between Activated Sludge, Moving Bed Biofilm Reactor, and Sequencing Batch Moving Bed Biofilm Reactor in the Dairy Wastewater Treatment

Contact Info

Product

Resources

About