Treatment of industrial oily wastewaters by wet oxidation

Zerva, C.; Peschos, Z.; Poulopoulos, Stavros G.; Philippopoulos, C.J.

doi:10.1016/s0304-3894(02)00265-0

Cited by 34 publications

(9 citation statements)

References 7 publications

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“…Within this project, wet oxidation (WO) is proposed for a drastic reduction of the volume of sewage sludge to be disposed, obtained by extremely reducing the volatile sludge content. WO has been applied for almost 100 years for the treatment of both sewage sludge and high strength industrial wastewaters (Strehlenert 1911;Zimmermann 1958;Ploos Van Amstel 1971;Ploos Van Amstel and Rietema 1973;Devlin and Harris 1984;Seiler 1987;Foussard et al 1989;Joglekar et al 1991;Mishra et al 1995;Debellefontaine et al 1996;Duprez et al 1996;Schmidt and Thomsen 1998;Debellefontaine et al 1999;Khan et al 1999;Luck 1999;Zerva et al 2003), and in recent years, a renewed interest in WO of sewage sludge has emerged, as confirmed by the number of recent publications (Pérez-Elvira et al 2006;Jaroslaw and Roman 2008;Yang et al 2010;Abe et al 2011;Gielen et al 2011;Strong et al 2011;Padoley et al 2012;Strong and Gapes 2012;Baroutian et al 2013).…”

Section: Introductionmentioning

confidence: 97%

Techno-economic and environmental assessment of sewage sludge wet oxidation

Bertanza

Canato

Heimersson

et al. 2014

Environ Sci Pollut Res

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Today, several technologies and management strategies are proposed and applied in wastewater treatment plants (WWTPs) to minimise sludge production and contamination. In order to avoid a shifting of burdens between different areas, their techno-economic and environmental performance has to be carefully evaluated. Wet oxidation (WO) is an alternative solution to incineration for recovering energy in sewage sludge while converting it to mostly inorganic residues. This paper deals with an experimentation carried out within the EU project "ROUTES". A mass balance was made for a WWTP (500,000 person equivalents) in which a WO stage for sludge minimisation was considered to be installed. Both bench- and full-scale test results were used. Design of treatment units and estimation of capital and operational costs were then performed. Subsequently, technical and economic aspects were evaluated by means of a detailed methodology which was developed within the ROUTES project. Finally, an assessment of environmental impacts from a life cycle perspective was performed. The integrated assessment showed that for the specific upgrade considered in this study, WO technology, although requiring a certain increase of technical complexity at the WWTP, may contribute to environmental and economic advantages. The paper provides guidance in terms of which aspects need a more thorough evaluation in relation to the specific case in which an upgrade with WO is considered.

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Section: Introductionmentioning

confidence: 97%

Techno-economic and environmental assessment of sewage sludge wet oxidation

Bertanza

Canato

Heimersson

et al. 2014

Environ Sci Pollut Res

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“…Several treatment methods such as photo-catalytic and direct oxidation, nano-filtration, vacuum membrane distillation and aerobic biological treatment, have been investigated for the degradation of the petrochemical wastewater containing MEG (Zerva et al, 2003;Mohammadi and Akbarabadi, 2005;Orecki et al, 2006;Kim and Hoffmann, 2008). Hassani et al (2013) found that the COD removal of 95.1 and 60.7% were achieved at influent MEG concentrations of 1000 and 3000 mgCOD l À1 , respectively; using moving bed biofilm reactor (MBBR).…”

Section: Introductionmentioning

confidence: 99%

Hythane (H2 + CH4) production from petrochemical wastewater containing mono-ethylene glycol via stepped anaerobic baffled reactor

Elreedy

Tawfik

Kubota

et al. 2015

International Biodeterioration & Biodegradation

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“…The Wet Oxidation (WO) technology has been proposed since 100 years for the treatment of both sewage sludge and highstrength industrial wastewaters: during the process, organic and biologically refractory compounds are converted into CO 2 , water, and simpler and easily treatable materials, with a significant reduction in toxicity and chemical oxygen demand (Strehlenert 1911;Zimmermann 1958;Ploos Van Amstel 1971;Ploos Van Amstel and Rietema 1973;Devlin and Harris 1984;Seiler 1987;Foussard et al 1989;Joglekar et al 1991;Mishra et al 1995;Debellefontaine et al 1996Debellefontaine et al , 1999Duprez et al 1996;Schmidt and Thomsen 1998;Khan et al 1999;Luck 1999;Zerva et al 2003). A research by Roy et al (2010) recorded the presence of 200 WO full scale plants operating around the world for the treatment of high-strength industrial wastewaters.…”

Section: Introductionmentioning

confidence: 99%

Anaerobic treatability of liquid residue from wet oxidation of sewage sludge

Bertanza

Galessi²,

Menoni

et al. 2014

Environ Sci Pollut Res

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Wet Oxidation (WO) of sewage sludge is a chemical oxidation of sludge at high temperatures and pressures by means of an oxygen-containing gas. The liquid stream originated by WO is easily biodegradable, and therefore, the recirculation to the biological Waste Water Treatment Plant (WWTP) may be a feasible solution. However, the WO effluent has a residual organic and nitrogen content so that its treatment may be required when the receiving WWTP has no surplus treatment capacity left. The aim of this research was the assessment of the anaerobic treatability of the WO liquid residue, in order to reduce the organic load to be recirculated to the WWTP, simultaneously promoting energy recovery. For this purpose, the liquid residue obtained during full scale WO tests on two different types of sludge was submitted to anaerobic digestion in a continuous flow pilot reactor (V = 5 L). Furthermore, batch tests were carried out in order to evaluate possible inhibition factors. Experimental results showed that, after the start-up/acclimation period (~130 days), Chemical Oxygen Demand (COD) removal efficiency was stably around 60% for about 120 days, despite the change in operating conditions. In the last phase of the experimental activity, COD removal reached 70% under the following treatment conditions: Hydraulic Retention Time (HRT) = 20 days, Volumetric Organic Loading Rate (VOLR) = 0.868 kg COD/m(3)/day, Organic Loading Rate per Volatile Suspended Solids (OLRvss) = 0.078 kg COD/kg VSS/day, temperature (T) = 36.5 °C, pH = 8. Energy balance calculation demonstrated anaerobic treatment sustainability.

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Treatment of industrial oily wastewaters by wet oxidation

Cited by 34 publications

References 7 publications

Techno-economic and environmental assessment of sewage sludge wet oxidation

Techno-economic and environmental assessment of sewage sludge wet oxidation

Hythane (H2 + CH4) production from petrochemical wastewater containing mono-ethylene glycol via stepped anaerobic baffled reactor

Anaerobic treatability of liquid residue from wet oxidation of sewage sludge

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