Characterisation of winery wastewater from continuous flow settling basins and waste stabilisation ponds over the course of 1 year: implications for biological wastewater treatment and land application

Welz, Pamela J.; Holtman, Gareth Alistair; Haldenwang, Rainer; Roes‐Hill, Marilize Le

doi:10.2166/wst.2016.226

Cited by 46 publications

(28 citation statements)

References 35 publications

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“…In the next result, we provide sufficient conditions that allow us to determine which equilibrium provides the greatest value for the methane flow rate. 16) and therefore, the maximal methane flow rate at equilibrium in problem (4.5) is achieved for some u ∈ (µ 1 (s 1 in ), µ 2 (s 2 )), with the corresponding steady state E * 2 (u) (washout of the acidogenic microorganism).…”

Section: (D) One Has Limmentioning

confidence: 99%

On the steady state optimization of the biogas production in a two-stage anaerobic digestion model

Bayen

Gajardo

2018

J. Math. Biol.

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In this paper, we study the optimization problem of maximizing biogas production at the steady state in a two-stage anaerobic digestion model, which was initially proposed in [4]. Nominal operating points, consisting in steady states where the involved microorganisms coexist, are usually referred to as desired operational conditions, in particular for maximizing biogas production. Nevertheless, we prove that under some conditions related to input substrate concentrations and microorganism growth functions, the optimal steady state can be the extinction of one of the two species. We provide some numerical examples of this situation.

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Section: (D) One Has Limmentioning

confidence: 99%

On the steady state optimization of the biogas production in a two-stage anaerobic digestion model

Bayen

Gajardo

2018

J. Math. Biol.

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“…The same was not observed for initial d-COD concentrations of 21,000 and 25,000 mg d-COD L −1 , since, when the d-COD concentration was 21,000 mg d-COD L −1 , the use of WE led to a significantly lower Cr(VI) reduction rate when compared to SCW, while when d-COD concentration was 25,000 mg d-COD L −1 , Cr(VI) reduction rates had no significant differences between SCW and WE. It is probable that, in these experiments with the less diluted WE, the high concentration of d-COD and/or the (poly)phenolic component of WE (that emanates from the seeds, skins, and piths of grapes), which is the least degradable fraction of WE and associated with phytotoxicity and microbial toxicity, had a negative impact on Cr(VI) reduction [42,43]. According to Ramond at al., [43] microbial communities are significantly impacted by winery wastewaters depending on their spatial locations, probably due to the toxicity of the influent stream (high COD, phenolic content, and low pH).…”

Section: Sequencing Batch Mode Operation With Recirculationmentioning

confidence: 99%

Simultaneous Treatment of Agro-Industrial and Industrial Wastewaters: Case Studies of Cr(VI)/Second Cheese Whey and Cr(VI)/Winery Effluents

Tatoulis

Michailides

Tekerlekopoulou

et al. 2018

Water

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Hexavalent chromium (Cr(VI)) was co-treated either with second cheese whey (SCW) or winery effluents (WE) using pilot-scale biological trickling filters in series under different operating conditions. Two pilot-scale filters in series using plastic support media were used in each case. The first filter (i.e., Cr-SCW-filter or Cr-WE-filter) aimed at Cr(VI) reduction and the partial removal of dissolved chemical oxygen demand (d-COD) from SCW or WE and was inoculated with indigenous microorganisms originating from industrial sludge. The second filter in series (i.e., SCW-filter or WE-filter) aimed at further d-COD removal and was inoculated with indigenous microorganisms that were isolated from SCW or WE. Various Cr(VI) (5-100 mg L −1) and SCW or WE (d-COD, 1000-25,000 mg L −1) feed concentrations were tested. Based on the experimental results, the sequencing batch reactor operating mode with recirculation of 0.5 L min −1 proved very efficient since it led to complete Cr(VI) reduction in the first filter in series and achieved high Cr(VI) reduction rates (up to 36 and 43 mg L −1 d −1 , for SCW and WW, respectively). Percentage d-COD removal for SCW and WE in the first filter was rather low, ranging from 14 to 42.5% and from 4 to 29% in the Cr-SCW-filter and Cr-WE-filter, respectively. However, the addition of the second filter in series enhanced total d-COD removal to above 97% and 90.5% for SCW and WE, respectively. The above results indicate that agro-industrial wastewater could be used as a carbon source for Cr(VI) reduction, while the use of two trickling filters in series could effectively treat both industrial and agro-industrial wastewaters with very low installation and operational costs.

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“…Experiments were performed using WW diluted with tap water at five different dilution ratios, leading to different initial pH and d-COD concentrations. Since the pH of undiluted WW was between 4 and 5 (slightly acidic due to the presence of organic acids [20]), experiments with high dilution ratios presented higher initial pH values (up to 5.96). It can be concluded from Figure 4 that pH values increase (up to 7.01) during biological d-COD degradation.…”

Section: Appl Sci 2020 10 X For Peer Review 8 Of 14mentioning

confidence: 99%

“…Although several technologies have been proposed for winery wastewater treatment in Greece and other countries, [2,10,13,[15][16][17][18][19] (e.g., chemical precipitation, coagulation/flocculation processes, aerobic and anaerobic biological treatment, constructed wetlands (CWs), advanced oxidation processes, etc. ), unpretreated WW is usually discharged directly into the septic system or irrigated onto agricultural or other land [20].…”

Section: Introductionmentioning

confidence: 99%

Biotreatment of Winery Wastewater Using a Hybrid System Combining Biological Trickling Filters and Constructed Wetlands

2020

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The objective of this work was to determine the ability of a pilot-scale hybrid system to treat real (non-synthetic) winery wastewater. The experimental treatment system consisted of two stages: An attached growth pilot-scale bioreactor (biological trickling filter with plastic support material) was initially used to remove a significant amount of dissolved chemical oxygen demand (d-COD) from winery wastewater, and then a pilot-scale, horizontal subsurface flow constructed wetland (CW) was examined as a post-treatment step for further d-COD removal. Results from the biofilter revealed that the recirculation rate of 1.0 L/min lead to higher d-COD removal rates than that of 0.5 L/min for all feed d-COD concentrations tested (3500, 7500, 9000 and 18,000 mg d-COD/L). Experiments in the CW were performed using feed d-COD concentrations of about 1500 mg/L (equivalent to biofilter effluent when initial filter feed d-COD concentrations are 18,000 mg/L). The wetland polishing stage managed to further remove d-COD and produced effluent concentrations below current legislation limits for safe disposal. Furthermore, the presence of zeolite in CW (one third of the length of CW) enhanced ammonium removal. The experimental results indicate that the combination of a biological trickling filter and a constructed wetland could effectively treat effluents originating from small wineries typical of the Mediterranean region.

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Characterisation of winery wastewater from continuous flow settling basins and waste stabilisation ponds over the course of 1 year: implications for biological wastewater treatment and land application

Abstract: It is therefore recommended that if land requirements can be met, winery effluent should be stored in ponds prior to treatment.

Cited by 46 publications

References 35 publications

On the steady state optimization of the biogas production in a two-stage anaerobic digestion model

On the steady state optimization of the biogas production in a two-stage anaerobic digestion model

Simultaneous Treatment of Agro-Industrial and Industrial Wastewaters: Case Studies of Cr(VI)/Second Cheese Whey and Cr(VI)/Winery Effluents

Biotreatment of Winery Wastewater Using a Hybrid System Combining Biological Trickling Filters and Constructed Wetlands

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