Mesophilic Anaerobic Co Digestion Of Municipal Wastewater Sludge And Un Dewatered Grease Trap Waste

Download Mesophilic Anaerobic Co Digestion Of Municipal Wastewater Sludge And Un Dewatered Grease Trap Waste full books in PDF, epub, and Kindle. Read online Mesophilic Anaerobic Co Digestion Of Municipal Wastewater Sludge And Un Dewatered Grease Trap Waste ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!

Mesophilic Anaerobic Co-digestion of Municipal Wastewater Sludge and Un-dewatered Grease Trap Waste

Author : Sedat Yalcinkaya
Publisher :
ISBN 13 :
Total Pages : 258 pages
Book Rating : 4.:/5 (93 download)

DOWNLOAD NOW!

Book Synopsis Mesophilic Anaerobic Co-digestion of Municipal Wastewater Sludge and Un-dewatered Grease Trap Waste by : Sedat Yalcinkaya

Download or read book Mesophilic Anaerobic Co-digestion of Municipal Wastewater Sludge and Un-dewatered Grease Trap Waste written by Sedat Yalcinkaya and published by . This book was released on 2014 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fat, oil, and grease residues, food particles, solids and some kitchen wastewaters are collected in grease traps which are separate from the municipal wastewater stream. Grease traps are emptied periodically and grease trap waste (GTW) is hauled for treatment. This dissertation focuses on anaerobic co-digestion of un-dewatered (raw) GTW with municipal wastewater treatment sludge (MWS) at wastewater treatment plants. In particular, this research focuses on the biochemical methane potential of un-dewatered GTW as well as the stability and performance of anaerobic co-digestion of MWS and un-dewatered GTW. A set of modified biochemical methane potential tests was performed to determine the methane potential of un-dewatered GTW under mesophilic conditions (35 °C). Methane potential of un-dewatered GTW in this study was 606 mL CH4/g VS [subscript added] which is less than previously reported methane potentials of 845 - 1050 mL CH4/g VS [subscript added] for concentrated/dewatered GTW. However, the methane potential of un-dewatered GTW (606 mL CH4/g VS [subscript added]) was more than two times greater than the 223 mL CH4/g VS [subscript added] reported for MWS digestion alone. A comprehensive study was performed to determine the stability and performance of anaerobic co-digestion of MWS with un-dewatered GTW as a function of increasing GTW feed ratios. The performance of two semi-continuously fed anaerobic digesters at 35 °C was evaluated as a function of increasing GTW feed ratios. Anaerobic co-digestion of MWS with un-dewatered GTW at a 46% GTW feed ratio (on a volatile solids basis) resulted in a 67% increase in methane production and a 26% increase in volatile solids reduction compared to anaerobic digestion of MWS alone. On the other hand, anaerobic co-digestion of un-dewatered GTW resulted in a higher inhibition threshold (46% on VS basis) than that of dewatered GTW. These results indicate that using un-dewatered GTW instead of dewatered GTW can reduce the inhibition risk of anaerobic co-digestion of MWS and GTW. Recovery of the anaerobic digesters following upset conditions was also evaluated and semi-continuous feed of digester effluent into upset digesters yielded of the biogas production level of the undisrupted digestion. Finally, a mathematical model was used to describe the relationship between methane potential and GTW feed ratio on a VS basis. The results of this research can be used to predict methane production and identify suitable GTW feeding ratios for successful co-digestion of un-dewatered GTW and MWS.

Environmental, Economic, and Process Evaluation of Anaerobic Co-digestion of Grease Trap Waste with Municipal Wastewater Sludge

Author : James Hunter Long
Publisher :
ISBN 13 :
Total Pages : 218 pages
Book Rating : 4.:/5 (772 download)

DOWNLOAD NOW!

Book Synopsis Environmental, Economic, and Process Evaluation of Anaerobic Co-digestion of Grease Trap Waste with Municipal Wastewater Sludge by : James Hunter Long

Download or read book Environmental, Economic, and Process Evaluation of Anaerobic Co-digestion of Grease Trap Waste with Municipal Wastewater Sludge written by James Hunter Long and published by . This book was released on 2012 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Anaerobic Co-digestion of Municipal Sewage Sludge with Selected Commercial and Industrial Organic Wastes

Author : Vahid Razaviarani
Publisher :
ISBN 13 :
Total Pages : 175 pages
Book Rating : 4.:/5 (9 download)

DOWNLOAD NOW!

Book Synopsis Anaerobic Co-digestion of Municipal Sewage Sludge with Selected Commercial and Industrial Organic Wastes by : Vahid Razaviarani

Download or read book Anaerobic Co-digestion of Municipal Sewage Sludge with Selected Commercial and Industrial Organic Wastes written by Vahid Razaviarani and published by . This book was released on 2014 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall goal of this research was to investigate the anaerobic co-digestion of municipal sewage sludge with selected organic wastes in three main areas: (1) to determine the maximum feasible loading of co-substrate, (2) to calibrate the ADM1 model for co-digestion system at steady state, and (3) to evaluate the linkage between microbial community dynamics and reactor performance and stability during steady state and overloading co-digestion. In this study, restaurant grease waste (GTW) as a commercial waste and biodiesel glycerin waste (BGW) as an industrial waste were co-digested with municipal wastewater sludge (MWS) in separate trials. In the first part of this research, the maximum feasible loading of each of the organic wastes with MWS with respect to the reactor performance and stability were investigated in the separate pilot-scale experiments. In each run, two 1300L completely mixed reactors were operated under mesophilic temperature (37°C) and a solids retention time (SRT) of 20 days. Throughout the pilot experiment, one reactor served as control and received only MWS and the other was assigned as the test digester and fed with the mixture of MWS and the co-substrate (GTW or BGW) in various organic loadings. GTW co-digestion with MWS was found to be feasible up to a maximum loading of 23% VS or 58% COD relative to the total 1.6 kg VS/m3-d or 4.0 kg COD/m3-d loadings, respectively. At this loading, test digester biogas production was 67% greater than that of the control. The test digester biogas production declined markedly when the percentage of VS from GTW in its feed was increased to 30% of its total VS loading. Causes of the reduced biogas production were investigated and attributed to process inhibition due to long chain fatty acid accumulation. The maximum safe limit of BGW co-digested with MWS was found at 23% and 35% of the total 1.04 kg VS/ (m3-d) and 2.38 kg COD/ (m3-d) loadings, respectively. At this loading, the biogas and methane production rates in the test digester were 1.65 and 1.83 times greater than of those in the control digester which received only MWS, respectively. Process instability was observed when the proportion of BGW in the test digester feed was 31% and 46% of the 1.18 kg VS/ (m3-d) and 2.88 kg COD/ (m3-d) loadings, respectively. In the second part of the research, the ADM1 model was calibrated for co-digestion of MWS and GTW at steady state using anaerobic respirometric test with substrate characterizations. Initial biomass concentrations and distributions were estimated using methane production rate curves together with effluent values from full-scale anaerobic digesters. Two separate datasets obtained from steady state mesophilic bench-scale experiments were used to calibrate and validate the model. The modified model was able to predict reasonably well the steady-state results of biogas production, CH4 and CO2 contents, pH, alkalinity, COD and VSS observed within the evaluated GTW loading. The calibrated model predicted well the bench and pilot scale co-digesters performance. The last part of the study was to investigate the relationships between microbial population (bacteria and archaea) dynamics and reactor performance and stability during the co-digestion of MWS with GTW or BGW in two separate trails. Pyrosequencing analysis revealed that Methanosaeta and Methanomicrobium were the dominant acetoclastic and hydrogenotrophic methanogen genera, respectively, during stable reactor operation. The roles of syntrophic bacteria such as Candidatus Cloacamonas-- and hydrogenotrophic methanogens were found to be substantial at overloading conditions in both experiments.

Anaerobic Co-digestion of Municipal Sludge and Restaurant Grease

Author : Zengkai Liu
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783659536687
Total Pages : 88 pages
Book Rating : 4.5/5 (366 download)

DOWNLOAD NOW!

Book Synopsis Anaerobic Co-digestion of Municipal Sludge and Restaurant Grease by : Zengkai Liu

Download or read book Anaerobic Co-digestion of Municipal Sludge and Restaurant Grease written by Zengkai Liu and published by LAP Lambert Academic Publishing. This book was released on 2014-04-30 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anaerobic codigestion of municipal wastewater sludge and restaurant grease was investigated in a semi-continuous lab-scale digestion experiment under mesophilic condition (37 C). Compared to the control digester, COD loading rate for test digester was elevated to 387% (organic loading rate 4.235 kgVS/m3/d) and led to 467% increase in daily biogas production, 25.2% increase in methane yield (based on VS deduction), 29.8% increase in COD reduction rate and 27.2% increase in VS reduction rate, respectively. Methane content ranged from 62% to 67%. There was no negative effect of grease addition on the digester performance in this experiment. The great increases in biogas production and methane yield indicated enhanced digestion performance. In addition, partial alkalinity and pH proved to be good indicators to monitor digestion process and predict overloading. It is still possible to keep increasing organic loading by the addition of more grease, but according to monitoring results, the system was close to overloading.

Industrial and Municipal Sludge

Author : Majeti Narasimha Vara Prasad
Publisher : Butterworth-Heinemann
ISBN 13 : 0128159081
Total Pages : 858 pages
Book Rating : 4.1/5 (281 download)

DOWNLOAD NOW!

Book Synopsis Industrial and Municipal Sludge by : Majeti Narasimha Vara Prasad

Download or read book Industrial and Municipal Sludge written by Majeti Narasimha Vara Prasad and published by Butterworth-Heinemann. This book was released on 2019-04-16 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt: Industrial and Municipal Sludge: Emerging Concerns and Scope for Resource Recovery begins with a characterization of the types of sludge and their sources and management strategies. This section is followed by specific chapters that cover Emerging contaminants in sludge (Endocrine disruptors, Pesticides and Pharmaceutical residues, including illicit drugs/controlled substances), Bioleaching of sludge [with an enriched sulfur-oxidizing bacterial community, Recovery of valuable metals (Bioleaching and use of sulfur-oxidizing bacterial community, and Biogas production by continuous thermal hydrolysis and thermophilic anaerobic digestion of waste activated sludge. In addition, the book includes numerous tables and flow diagrams to help users further comprehend the subject matter. - Includes numerous tables and flow diagrams to assist in the comprehension of new and existing sludge treatments and resource recovery technology - Covers biogas production by continuous thermal hydrolysis and thermophilic anaerobic digestion of waste activated sludge - Presents information on the recovery of valuable metals from sludge (bioleaching and the use of a sulfur-oxidizing bacterial community) - Includes opportunities and challenges in the biorefinery-based valorization of pulp and paper sludge

Mesophilic Anaerobic Co-digestion of Municipal Sewage Sludge with Industrial Wastes

Author : T. Wallace
Publisher :
ISBN 13 :
Total Pages : 101 pages
Book Rating : 4.:/5 (11 download)

DOWNLOAD NOW!

Book Synopsis Mesophilic Anaerobic Co-digestion of Municipal Sewage Sludge with Industrial Wastes by : T. Wallace

Download or read book Mesophilic Anaerobic Co-digestion of Municipal Sewage Sludge with Industrial Wastes written by T. Wallace and published by . This book was released on 2003 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Co-digestion of Municipal Solid Waste and Wastewater Treatment Plant Sludges

Author : Daniel Thomas Rich
Publisher :
ISBN 13 :
Total Pages : 150 pages
Book Rating : 4.:/5 (55 download)

DOWNLOAD NOW!

Book Synopsis Co-digestion of Municipal Solid Waste and Wastewater Treatment Plant Sludges by : Daniel Thomas Rich

Download or read book Co-digestion of Municipal Solid Waste and Wastewater Treatment Plant Sludges written by Daniel Thomas Rich and published by . This book was released on 1993 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Anaerobic Co-digestion of Organic Fraction of Municipal Solid Waste with Municipal Sludge with Or Without Microwave Pre-treatment

Author : Efath Ara
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (871 download)

DOWNLOAD NOW!

Book Synopsis Anaerobic Co-digestion of Organic Fraction of Municipal Solid Waste with Municipal Sludge with Or Without Microwave Pre-treatment by : Efath Ara

Download or read book Anaerobic Co-digestion of Organic Fraction of Municipal Solid Waste with Municipal Sludge with Or Without Microwave Pre-treatment written by Efath Ara and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Anaerobic co-digestion of organic fraction of municipal solid waste (OFMSW), with thickened waste activated sludge (TWAS) and primary sludge (PS) has the potential to enhance (biodegradation) of solid waste, increase longevity of existing landfills and lead to more sustainable development by improving waste to energy production. This study reports on mesophilic batch anaerobic biological methane potential (BMP) assays carried out with different concentrations and combinations (ratios) of OFMSW, TWAS (microwave (MW) pre-treated and untreated) and PS to assess digester stability and potential improved specific biodegradability and potential increased specific biogas production by digestion of OFMSW with PS and TWAS in various tri-substrate mixtures. Results indicated improvements in specific biogas production with concomitant improvements in COD and volatile solid (VS) removal for co-digestion of OMSW, TWAS and PS vs. controls. In terms of improvements in biogas production and digester stability the OFMSW:TWAS:PS:50:25:25 ratio with or without TWAS MW treatment was deemed best for further continuous digester studies. At a 15d HRT which is the regulatory policy in the province of Ontario for municipal mesophilic anaerobic TWAS:PS treatment, co-digestion of OFMSW:TWAS:PS, and OFMSW:TWASMW:PS resulted in a 1.38 and 1.46 fold relative improvement in biogas production and concomitant waste stabilization when compared to TWAS:PS and TWASMW:PS digestion at the same HRT and volumetric VS loading rate respectively. Treatment of OFMSW with PS and TWAS provides beneficial effects that could be exploited at MWWTP that are being operated at loading rates less than design capacity.

Anaerobic Digestion of Organic Solid Waste for Energy Production

Author : Satoto Endar Nayono
Publisher : KIT Scientific Publishing
ISBN 13 : 3866444648
Total Pages : 152 pages
Book Rating : 4.8/5 (664 download)

DOWNLOAD NOW!

Book Synopsis Anaerobic Digestion of Organic Solid Waste for Energy Production by : Satoto Endar Nayono

Download or read book Anaerobic Digestion of Organic Solid Waste for Energy Production written by Satoto Endar Nayono and published by KIT Scientific Publishing. This book was released on 2010 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anaerobic digestion of the organic fraction of municipal solid waste as such or together with food waste, press water or patatoes sludge was investigated to equilibrate methane production within a day or over the weekend, when no OFMSW was available. A stable co-digestion process could be achieved with COD degradation between 60 and 80 %. The max. organic loading rates were 28 kg COD/L, d. For stable methane production the OLR during Co-digestion should not excede 22,5 kg/L,

Anaerobic Codigestion of Municipal Wastewater Sludge and Restaurant Grease

Author : Zengkai Liu
Publisher :
ISBN 13 : 9780494904480
Total Pages : pages
Book Rating : 4.9/5 (44 download)

DOWNLOAD NOW!

Book Synopsis Anaerobic Codigestion of Municipal Wastewater Sludge and Restaurant Grease by : Zengkai Liu

Download or read book Anaerobic Codigestion of Municipal Wastewater Sludge and Restaurant Grease written by Zengkai Liu and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Anaerobic Co-digestion of Thickened Waste Activated Sludge with Grease Interceptor Waste

Author : Ling Wang
Publisher :
ISBN 13 :
Total Pages : 95 pages
Book Rating : 4.:/5 (81 download)

DOWNLOAD NOW!

Book Synopsis Anaerobic Co-digestion of Thickened Waste Activated Sludge with Grease Interceptor Waste by : Ling Wang

Download or read book Anaerobic Co-digestion of Thickened Waste Activated Sludge with Grease Interceptor Waste written by Ling Wang and published by . This book was released on 2012 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Anaerobic Digestion of Solid Waste and Sewage Sludge to Methane

Author : Steven J. Hitte
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.3/5 (121 download)

DOWNLOAD NOW!

Book Synopsis Anaerobic Digestion of Solid Waste and Sewage Sludge to Methane by : Steven J. Hitte

Download or read book Anaerobic Digestion of Solid Waste and Sewage Sludge to Methane written by Steven J. Hitte and published by . This book was released on 1975 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Anaerobic Co-digestion of Municipal Solid Waste and Sewage Sludge

Author : Nancy Hamzawi
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (136 download)

DOWNLOAD NOW!

Book Synopsis Anaerobic Co-digestion of Municipal Solid Waste and Sewage Sludge by : Nancy Hamzawi

Download or read book Anaerobic Co-digestion of Municipal Solid Waste and Sewage Sludge written by Nancy Hamzawi and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a solution to the problems of municipal solid waste management, anaerobic digestion possesses the optimal combination of volume reduction, probability of success and potential for both energy and resource recovery. An innovative application of anaerobic processes is the co-digestion of sewage sludge and the organic fraction of municipal solid waste (OFMSW). The purpose of this study is to evaluate the technical feasibility of this process in the context of typical Canadian solid waste. Lab-scale experiments were initially conducted using one litre batch bioreactors operated mesophilically (37$\sp\circ$C) and fed a mixture of primary sludge (RAW), thickened waste activated sludge (TWAS) and simulated OFMSW. To facilitate organics solubilization, three pretreatments were evaluated: thermal, alkaline and thermochemical. Using a central composite experimental design, two factors were studied, the total solids content of the feed and its particle size. For all three pretreatments, second order empirical models were developed with respect to common indicators of metabolic activity, namely, biogas production, biogas methane concentration, soluble chemical oxygen demand (COD) removal and total and volatile solids reduction. (Abstract shortened by UMI.).

Co-digestion of Sewage Sludge and Pig Manure Under Mesophilic Conditions

Author : Xuanye Bai
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (992 download)

DOWNLOAD NOW!

Book Synopsis Co-digestion of Sewage Sludge and Pig Manure Under Mesophilic Conditions by : Xuanye Bai

Download or read book Co-digestion of Sewage Sludge and Pig Manure Under Mesophilic Conditions written by Xuanye Bai and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The feasibility and kinetics of anaerobic co-digestion of pig manure (PM) and sewage sludge (SS) were investigated. In this study, bench scale batch reactors were setup under mesophilic conditions (35) with SS/PM volatile solid ratios at 7:1, 14:1, 21:1, and 2 controls of pure SS and PM. The ratio selection was based on the SS production of the University Park Wastewater Treatment Plant and PM production by the University Farm. Physical/chemical properties of sludge before and after digestion were analyzed. Daily methane production and cumulative methane yield were recorded, and the cumulative methane yields were fitted with both the first-order kinetic and the modified Gompertz model. All mixing ratios showed stable digestions as indicated by the pH, total ammonia nitrogen (TAN), and volatile fatty acid (VFA)/alkalinity ratios of the final digestates. PM produced more methane than SS and as a result, increasing PM in co-digestion also increased methane yield. The maximum methane yield occurred at SS/PM ratio of 7:1 with a 10% increase at 200 mL CH4/g VSadded compared with SS alone at 182 mL CH4/g VSadded. This is also the maximum co-digestion need from the University Farm in winter seasons. Although residual nitrogen increased in the co-digestion digestates, most of which were in solid form, resulting a decrease in soluble nitrogen. This implies a potential decrease in the nitrogen return which helps relief mainstream treatment. Both the first-order kinetic model and the modified Gompertz model showed good fit to the data produced. However, the modified Gompertz model proved to be the best choice that works for degradation with or without a lag-period. The first-order kinetic model indicated faster gas production kinetics by the 3 co-digestion treatments than the pure controls, which implies the existence of a positive synergistic effect by co-digestion. The modified Gompertz model also showed the highest maximum gas production rate, a decreased lag-period, and a shortened gas production period by co-digestion, which implies a facilitated hydrolysis has occurred from the mixture. This faster kinetics implies a shorter digestion time than the original wastewater sludge digestion which can help accommodate the increased digestion materials from the co-digestion process.

Batch and Continuous Anaerobic Digestion of Different Organic Waste Streams

Author : Xiguang Chen
Publisher : ProQuest
ISBN 13 : 9781109212808
Total Pages : 89 pages
Book Rating : 4.2/5 (128 download)

DOWNLOAD NOW!

Book Synopsis Batch and Continuous Anaerobic Digestion of Different Organic Waste Streams by : Xiguang Chen

Download or read book Batch and Continuous Anaerobic Digestion of Different Organic Waste Streams written by Xiguang Chen and published by ProQuest. This book was released on 2008 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, batch digestion tests were carried out to treat five different food wastes, grease trap waste, glycerin, the co-digestion of five food wastes, the co-digestion of grease trap waste and dairy manure, and the co-digestion of glycerin and dairy manure. The batch reactor used in this study had total and working volumes of 1130 mL and 500 mL, respectively. The initial organic loading was set to be 3.0 g VS/L and the food to microorganism ratio was either 0.5 or 1.0 for different treatments based on the characteristics of each waste stream. Both mesophilic (35 ± 2°C) and thermophilic (50 ± 2°C) temperatures were tested for the five food waste streams whereas only the mesophilic condition was applied to grease trap waste and glycerin due to their fast hydrolysis products would drop the pH and inhibit the methanogens especially under thermophilic conditions. All the batch digestion tests were successful in terms of biogas yield, biogas production rate and solid reductions. The results from batch anaerobic digestion tests were then used for designing continuous digestion experiments. All the continuous digestion experiments were conducted by using a continuous bioreactor mixed by biogas circulation system located in an environmental chamber at mesophilic temperature. The total and working volumes of the continuous bioreactor were 20 L and 18 L, respectively. The hydraulic retention time (HRT) was 20 days and the organic loading rate (OLR) started from 0.5 g VS/L/d and increased stepwise once the digestion system reached quasi-equilibrium as determined by steady gas production. The results from the continuous digestion tests indicated that the microorganism in the co-digestion of food wastes were inhibited by the accumulation of volatile fatty acids due to highly biodegradable carbon content in food wastes. Addition of alkali such as sodium hydroxide was required for pH adjustment and alkalinity control. The biogas yields at OLR of 0.5 and 1.0 g VS/L/d were 0.16 ± 0.02 and 0.27 ± 0.01 L/g VS, respectively. By contrast, co-digestion of dairy manure with waste having highly degradable carbon content, grease trap waste and glycerin in this case was feasible due to the buffering capacity of dairy manure. The biogas yields from co-digestion of grease trap waste and dairy manure at OLR of 0.5, 1.0, and 2.0 g VS/L/d were 0.27 ± 0.02, 0.27 ± 0.01 and 0.25 ± 0.03 L/g VS, respectively. The biogas yield from co-digestion of glycerin and dairy manure at OLR of 1.0, 2.0, 3.0, 4.0, 5.0 and 6.0 g VS/L/d were 0.47 ± 0.03, 0.57 ± 0.05, 0.57 ± 0.14, 0.55 ± 0.20, 0.54 ± 0.14 and 0.61 ± 0.18 L/g VS, respectively. Co-digestion of either grease trap waste or glycerin with dairy manure is highly feasible, and can significantly improve the biogas production efficiency. (Abstract shortened by UMI.).

Enhancement of the Mesophilic Anaerobic Co-digestion of Municipal Sewage and Scum

Author : Bradley Young
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (871 download)

DOWNLOAD NOW!

Book Synopsis Enhancement of the Mesophilic Anaerobic Co-digestion of Municipal Sewage and Scum by : Bradley Young

Download or read book Enhancement of the Mesophilic Anaerobic Co-digestion of Municipal Sewage and Scum written by Bradley Young and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Scum is an integral component of solids management in MWWTP and is composed of fats, oils, grease and other entrained floatable materials that are collected during primary clarification. Lab scale BMP tests showed the addition of 14.5 g VS/L of scum exhibited the greatest increase in biogas production of 1.6 times per g VS added compared to the control, while a higher additional scum loading of 33.7 g VS/L reduced the biogas yield to 32% of the control reactor. Lab scale semi-continuous digestion measured the effects of scum loading and temperature of pretreatment in the scum concentrator. At 15 d and 20 d HRTs the greatest observed improvement in biogas was achieved by adding 3% scum by volume and pretreating the scum at 70°C in a scum concentrator with respective improvements of 24% and 16%.

Inducing Functional Stability of Anaerobic Co-digestion of Grease Interceptor Waste and Thickened Waste Activated Sludge

Author : Elvin Haffez Hossen
Publisher :
ISBN 13 :
Total Pages : 98 pages
Book Rating : 4.:/5 (881 download)

DOWNLOAD NOW!

Book Synopsis Inducing Functional Stability of Anaerobic Co-digestion of Grease Interceptor Waste and Thickened Waste Activated Sludge by : Elvin Haffez Hossen

Download or read book Inducing Functional Stability of Anaerobic Co-digestion of Grease Interceptor Waste and Thickened Waste Activated Sludge written by Elvin Haffez Hossen and published by . This book was released on 2013 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: