Strategy for olive mill wastewater treatment and reuse with a sewage plant in an arid region

Boukchina, Rachid; Choi, E.; Kim, S.; Yu, Yaqin; Cheung, Y.J.

doi:10.2166/wst.2007.308

Cited by 6 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reddy et al (2003) demonstrated an average COD removal capacity of 81% using a similar laboratory scale MLE process to treat VOE. Current findings substantiated previous research by Boukchina et al (2007) who showed 84% COD removal using aerobic treatment of olive mill WW, although the initial COD concentration of the influent was 250 mg l )1 . In addition, other biological treatment processes using biomass rich in fungi showed a COD removal capacity of 86% under aerobic conditions ).…”

Section: Discussionsupporting

confidence: 90%

“…The high organic load (±1000 mg COD l )1 ) and the possibility of the presence of toxic compounds in the VOE, could have impacted on the COD removal capacity of the industrial process. Research by Boukchina et al (2007) also confirmed that VOEs such as olive mill WW comprise toxic compounds, which negatively impact on biological treatment. The COD removal capacity of the industrial process support the work of other researchers such as Mulligan and Sheridan (1975), who demonstrated the capability of activated sludge to treat emulsified lipids and provide removal efficiencies as high as 80%.…”

Section: Discussionmentioning

confidence: 83%

See 1 more Smart Citation

Comparative evaluation of the microbial community in biological processes treating industrial and domestic wastewaters

2007

View full text Add to dashboard Cite

Aims: Comparison of the microbial composition and process performance between laboratory scale processes treating domestic and vegetable oil wastewaters. Methods and Results: Two laboratory scale modified Ludzack–Ettinger processes were operated under similar operating conditions. One process was fed domestic wastewater and the other an industrial wastewater, vegetable oil effluent. Nitrogen removal capacities of the processes were similar. The industrial process exhibited a lower COD removal capacity and oxygen utilization rate, although a greater mixed liquor volatile suspended solids concentration was observed in the industrial process. Fluorescent in situ hybridization (FISH) with probes EUBmix, ALF1b, BET42a, GAM42a and HGC69a revealed that 81% and 72% of total cells stained with 4′, 6‐diamidino‐2‐phenylindole (DAPI) within the domestic and industrial processes respectively bound to EUBmix. This indicated a slightly lower Eubacterial population within the industrial process. The alpha‐proteobacteria was the dominant community in the industrial process (31% of EUBmix), while the beta‐proteobacteria dominated the domestic process (33% of EUBmix). Conclusions: The findings served to establish a difference in the microbial population between the processes. Therefore, the class alpha‐proteobacteria could play a primary role in the degradation of vegetable oil effluent. Significance and Impact of the Study: This research will aid in process design and retrofitting of biological processes treating vegetable oil effluent.

show abstract

Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 83%

Comparative evaluation of the microbial community in biological processes treating industrial and domestic wastewaters

2007

View full text Add to dashboard Cite

show abstract

“…Psychro-and thermophilic microbes are considered disadvantageous for the methanogenic process whereas mesophilic microbes, such as Methanosaeta, become optimal for the anaerobic bio-digestion of COD in the feedstock. This is so if the temperature is kept constant within mesophilic conditions, by reducing the heat ingress from/to the surroundings, by applying thermal insulation for the digesters (Gelegenis et al, 2007;Boukchina et al, 2007;Hartati et al, 2020). Another critical parameter is the pH value for the anaerobic digestion of the feedstock.…”

Section: Introductionmentioning

confidence: 99%

Biogas Production through Co-Digestion of Olive Mill with Municipal Sewage Sludge and Cow Manure

Rabadi

Al‐Zboon

Shawaqfah

et al. 2021

Environ. Nat. Resour. J.

View full text Add to dashboard Cite

The treatment of olive mill (OM) residues from agricultural facilities is a daunting challenge since tremendous amounts are disposed per annum that should be treated. One of the promising treatment methods is the anaerobic methanogenic digestion of OM residues. In current investigations, the anaerobic digestion of the OM substrate is enhanced through mixing its slurries with sewage sludge (SS) or with cow manure (C), which consists of the kernels for the digestion process. Besides feedstock, other operational parameters such as hydraulic retention time (HRT), temperature and pH have a great impact on the biogas production rate and quality. Experimental investigations were conducted by means of the anaerobic biodegradation of the substrate for OM-SS and -C using a batch reactor under mesophilic conditions and foreseen HRT for 30 days. Almost neutral pH values of 7.4-7.6 were found for the anaerobic treatment of the substrate for OM-SS, and a slightly acidic pH in the range of 4.8-5.3 was found for the anaerobic treatment of the substrate for OM-C. The results revealed that the biogas production for OM-SS and -C exceeded 0.07 and 0.31 LBiogas/(LFerm·day), respectively. Regarding the COD reduction, its removal efficiency was obtained as 46.1 and 53.8% for OM-SS and -C respectively. For economic concerns, significant methane yields were attained as 56.8 and 115.8 [LCH4/kgCOD] for the OM-SS and -C substrates, respectively. In virtue of these remarkable merits, anaerobic methanogenic digestion should be adapted to a commercial scale for the treatment and biogas production of OM residues.

show abstract

“…In the past, different nitrogen‐rich substrates have been utilized for the management of OMWW. These included the poultry litter, cattle manure, sewage sludge, swine manure, and abattoir wastes . Moreover, a number of other researchers assessed the effect of the addition of bioavailable nutrients and micronutrients in concentrated forms to the process and in this way improved the overall stability …”

Section: Introductionmentioning

confidence: 99%

Anaerobic Digestion of Olive Mill Wastewater: Focusing on the Effect of Nitrogen Source

Zarkadas

Zachariou

Stamou

et al. 2019

CLEAN Soil Air Water

View full text Add to dashboard Cite

Olive oil production is a seasonal agricultural activity taking place around the Mediterranean Sea with high financial importance and significant environmental footprint. Unfortunately, olive milling is generating olive mill wastewater (OMWW), which is an effluent with high carbon-to-nitrogen ratio and low pH. The aim of this work is to assess the application of different high nitrogen substrates for overcoming the problem of nitrogen deficiency of the mono-digestion of olive mill wastewater. The nitrogen-rich substrates are fish meal, bone, and meat meal (BMM), blood meal (BM), feather meal (FEM), mixtures of FEM and BM, soybean meal, and corn-gluten meal, which are mixed with the olive mill wastewater in order to attain C/N ¼ 20:1. The substrates are evaluated in batch and tank reactors. According to the results, the type of protein is an insignificant process parameter and the process can be developed without inhibition phenomena to be presented with any of the co-substrates assessed. The maximum bio-methane potential registered for the mixture of olive mill wastewater and bone, and meat meal with 449 mL CH 4 g À1 volatile solids added (VS) with an organic loading rate (OLR) of 3.6 kg V À1 s À1 m À3 per day. The overall process presented remarkable tolerance during the stepwise increase of OLR from 3.6 to 5.8 kg V À1 s À1 m À3 per day with the efficiency of the process to be reduced by 15% for all co-digestion mixtures while the volumetric production increased from 1.5 to 2.1 m 3 CH 4 m À3 per day.

show abstract

Strategy for olive mill wastewater treatment and reuse with a sewage plant in an arid region

Cited by 6 publications

References 13 publications

Comparative evaluation of the microbial community in biological processes treating industrial and domestic wastewaters

Comparative evaluation of the microbial community in biological processes treating industrial and domestic wastewaters

Biogas Production through Co-Digestion of Olive Mill with Municipal Sewage Sludge and Cow Manure

Anaerobic Digestion of Olive Mill Wastewater: Focusing on the Effect of Nitrogen Source

Contact Info

Product

Resources

About