Improving methane production during the codigestion of waste-activated sludge and fatty wastewater: Impact of thermo-alkaline pretreatment on batch and semi-continuous processes

被引：38

作者：

Carrere, H. ^{[1
]}

Rafrafi, Y. ^{[1
]}

Battimelli, A. ^{[1
]}

Torrijos, M. ^{[1
]}

Delgenes, J. P. ^{[1
]}

Motte, C. ^{[2
]}

机构：

[1] INRA, Lab Biotechnol Environm, UR0050, F-11100 Narbonne, France

[2] Lille Metropole Communaute Urbaine, F-59034 Lille, France

来源：

CHEMICAL ENGINEERING JOURNAL | 2012年 / 210卷

关键词：

Methane; Anaerobic digestion; Biogas; Saponification; BMP; Semi-continuous reactors; Codigestion; GREASE TRAP SLUDGE; ANAEROBIC-DIGESTION; SEWAGE-SLUDGE; CO-DIGESTION; THERMOCHEMICAL PRETREATMENT; HYDROLYSIS; SOLUBILIZATION; RESIDUES;

D O I：

10.1016/j.cej.2012.09.005

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

With the objective of maximising methane production from waste-activated sludge (WAS), codigestion with fatty wastewater (FW) collected from restaurants was studied and the application of both a 170 degrees C thermal pretreatment and thermo-alkaline/saponification to mixed WAS/FW waste was evaluated. Batch anaerobic digestion tests showed that recalcitrant compounds were formed during the 170 degrees C pretreatment of fatty wastewater and thermo-alkaline pretreatments (80 degrees C or 120 degrees C, pH 8, 9 or 10) led to an increased initial methane production rate and to a very slight impact on the methane potential of the mixed waste (+4-7%). Semi-continuous anaerobic digesters were fed over 4 months with WAS, two mixed substrates WAS/FW 90/10 and WAS/FW 60/40, and with WAS/FW 90/10 pretreated at softer conditions (80 degrees C and pH = 8, 0.14 g(KOH) g(VS)(-1)). This pretreatment led to a significant increase in the methane production of semi-continuous reactors (+58%). Finally, this study showed the feasibility of the codigestion of waste activated sludge with highly concentrated fatty wastewater (40% in volume, 49% in VS and 73% in COD, equivalent to 7 g L-1 of lipids). It resulted in specific methane production of 362 mL CH4 g(-1) VS whereas WAS alone produced only 116 mL CH4 g(-1) VS. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：404 / 409

页数：6

共 33 条

[1]

American Public Health Association, 1992, STAND METH EX WAT WA

[2]

[Anonymous], ROUND TABLE SUSTAINA

[3] Principles and potential of the anaerobic digestion of waste-activated sludge [J].

Appels, Lise ;

Baeyens, Jan ;

Degreve, Jan ;

Dewil, Raf .

PROGRESS IN ENERGY AND COMBUSTION SCIENCE, 2008, 34 (06) :755-781

[4] Slaughterhouse fatty waste saponification to increase biogas yield [J].

Battimelli, A. ;

Torrijos, M. ;

Moletta, R. ;

Delgenes, J. P. .

BIORESOURCE TECHNOLOGY, 2010, 101 (10) :3388-3393

[5] Saponification of fatty slaughterhouse wastes for enhancing anaerobic biodegradability [J].

Battimelli, Audrey ;

Carrere, Helene ;

Delgenes, Jean-Philippe .

BIORESOURCE TECHNOLOGY, 2009, 100 (15) :3695-3700

[6]

Biogasmax, 2010, SYNTH REP

[7] Impacts of thermal pre-treatments on the semi-continuous anaerobic digestion of waste activated sludge [J].

Bougrier, C. ;

Delgenes, J. P. ;

Carrere, H. .

BIOCHEMICAL ENGINEERING JOURNAL, 2007, 34 (01) :20-27

[8] Combination of thermal treatments and anaerobic digestion to reduce sewage sludge quantity and improve biogas yield [J].

Bougrier, C. ;

Delgenes, J. -P. ;

Carrere, H. .

PROCESS SAFETY AND ENVIRONMENTAL PROTECTION, 2006, 84 (B4) :280-284

[9] A review on hydrolytic enzymes in the treatment of wastewater with high oil and grease content [J].

Cammarota, M. C. ;

Freire, D. M. G. .

BIORESOURCE TECHNOLOGY, 2006, 97 (17) :2195-2210

[10]

Canler J., 2001, Performances des systemes de traitement biologique aerobie des graisses - Graisses issues des degraisseurs de stations d'epuration traitant des effluents a dominante domestique (Document technique FNDAE n 24)

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