An integrated solution to wastewater and biodegradable organic waste management by applying anaerobic digestion and membrane bioreactor processes

2014 ◽  
Vol 9 (4) ◽  
pp. 464-474 ◽  
Author(s):  
N. Solomou ◽  
A. Stamatoglou ◽  
S. Malamis ◽  
E. Katsou ◽  
C. N. Costa ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Sewage Sludge ◽  
Water Reuse ◽  
Membrane Bioreactor ◽  
Organic Waste ◽  
Integrated Treatment ◽  
Integrated System ◽  
Operating Conditions ◽  
Treated Effluent ◽  
Start Up

An integrated system for the biological treatment of wastewater and biodegradable organic waste (BOW) was examined. The system consisted of a membrane bioreactor (MBR) for the treatment of sewage and an anaerobic digestion (AD) unit for the treatment of biowaste and sewage sludge. The ‘zero’ waste concept was the driving force for its implementation, targeting at the effective treatment of BOW, sewage sludge and wastewater and at energy and materials recovery. BOW and wastewater were fed to the integrated treatment system to produce treated effluent suitable for irrigation, energy and a stabilized solid to be used as soil improver. The system was operated for one year, from start-up to process optimization. After the start-up, five experimental stages were carried out for the MBR process and four phases for the AD process. Under optimized operating conditions, the MBR achieved 99% removal of ammonium nitrogen, 95% removal of nitrogen and 96% removal of chemical oxygen demand. The treated effluent satisfied the Cypriot water reuse standards. The energy balance showed that the AD required 5% of heat and 3.5% of electricity from the total energy of the produced biogas to maintain its operation. This resulted in 50% of excess heat and 31.5% of excess electricity.

scholarly journals Biogas potential of organic waste onboard cruise ships — a yet untapped energy source

2021 ◽  
Author(s):  
Kai Schumüller ◽  
Dirk Weichgrebe ◽  
Stephan Köster
Keyword(s):  
Energy Source ◽  
Anaerobic Digestion ◽  
Sewage Sludge ◽  
Food Waste ◽  
Energy Demand ◽  
Organic Waste ◽  
Biogas Production ◽  
Biogas Yield ◽  
Cruise Ships ◽  
Detailed Presentation

AbstractTo tap the organic waste generated onboard cruise ships is a very promising approach to reduce their adverse impact on the maritime environment. Biogas produced by means of onboard anaerobic digestion offers a complementary energy source for ships’ operation. This report comprises a detailed presentation of the results gained from comprehensive investigations on the gas yield from onboard substrates such as food waste, sewage sludge and screening solids. Each person onboard generates a total average of about 9 kg of organic waste per day. The performed analyses of substrates and anaerobic digestion tests revealed an accumulated methane yield of around 159 L per person per day. The anaerobic co-digestion of sewage sludge and food waste (50:50 VS) emerged as particularly effective and led to an increased biogas yield by 24%, compared to the mono-fermentation. In the best case, onboard biogas production can provide an energetic output of 82 W/P, on average covering 3.3 to 4.1% of the total energy demand of a cruise ship.

scholarly journals Treatment of dairy waste by anaerobic co-digestion with sewage sludge

2016 ◽  
Vol 23 (1) ◽  
pp. 99-115 ◽  
Author(s):  
Agnieszka A. Pilarska ◽  
Krzysztof Pilarski ◽  
Kamil Witaszek ◽  
Hanna Waliszewska ◽  
Magdalena Zborowska ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Anaerobic Digestion ◽  
Sewage Sludge ◽  
Organic Carbon ◽  
Organic Waste ◽  
Cheese Whey ◽  
Oxygen Demand ◽  
Volatile Solids ◽  
Biomethane Production ◽  
Digested Sewage Sludge

Abstract The results of anaerobic digestion (AD) of buttermilk (BM) and cheese whey (CW) with a digested sewage sludge as inoculum is described. The substrate/inoculum mixtures were prepared using 10% buttermilk and 15% cheese whey. The essential parameters of the materials were described, including: total solids (TS), volatile solids (VS), pH, conductivity, C/N ratio (the quantitative ratio of organic carbon (C) to nitrogen (N)), alkalinity, chemical oxygen demand (COD). The potential directions of biodegradation of the organic waste types, as used in this study, are also presented. Appropriate chemical reactions illustrate the substrates and products in each phase of anaerobic decomposition of the compounds that are present in buttermilk and cheese whey: lactic acid, lactose, fat, and casein. Moreover, the biogas and biomethane production rates are compared for the substrates used in the experiment. The results have shown that buttermilk in AD generates more biogas (743 m3/Mg VS), including methane (527 m3/Mg VS), when compared with cheese whey (600 m3/Mg VS, 338 m3/Mg VS for biogas and methane, respectively).

scholarly journals Modelling and Multi-Criteria Analysis of Anaerobic Digestion Process to Get Upgraded Methane from Bio-Residues in the City of Reykjavik

Proceedings ◽  
2019 ◽  
Vol 30 (1) ◽  
pp. 46
Author(s):  
Finger ◽  
Stepanovic ◽  
Llano
Keyword(s):  
Anaerobic Digestion ◽  
Sewage Sludge ◽  
Food Waste ◽  
Organic Waste ◽  
Waste Treatment ◽  
Action Plan ◽  
Digestion Process ◽  
Climate Action ◽  
Climate Action Plan ◽  
The City

Anaerobic digestion of urban organic wastes, farming slurries or sewage sludge is a common practice in waste treatment plants. In the city of Reykjavik, the organic waste fraction constituted by 60% of biomass and 40% of food waste will be transformed by the local waste company SORPA providing biofuel for up to 10% of the cars. Such measures belong to the 2018-2030 Climate Action Plan from the Icelandic Government.

Recalcitrant COD degradation by an integrated system of ozonation and membrane bioreactor

2007 ◽  
Vol 55 (12) ◽  
pp. 245-251 ◽  
Author(s):  
K. Gommers ◽  
H. De Wever ◽  
E. Brauns ◽  
K. Peys
Keyword(s):  
Activated Sludge ◽  
Biological Treatment ◽  
Membrane Bioreactor ◽  
Paper Industry ◽  
Integrated Treatment ◽  
Integrated System ◽  
Screening Tests ◽  
Ozone Dose ◽  
Fenton Reagents ◽  
Integrated Concept

In order to treat wastewater to a low residual COD-concentration such as 125 mg/L, classical biological treatment is not sufficient for many types of industry. This research focused on the integrated treatment of the wastewater of the paper industry, with a membrane bioreactor (MBR) and an oxidation step. The optimal configuration was examined. Screening tests with different types of oxidation showed that ozonation after biological treatment could reduce the COD with 40% with an ozone dose of 0.4–0.8 g O3/g COD. BOD/COD ratio could be increased up to 0.19. Neither combination of ozone with UV and/or hydrogen peroxide nor the process H2O2/UV or (photo-)Fenton reagents gave any improvement in COD reduction or BOD increase, unless the doses were very high. Based on these results, an integrated system MBR–ozonation was designed, with recirculation of MBR effluent over ozonation. This test showed that reduction of COD up to 125 mg/L immediately behind the MBR required a lot of ozone. A technically feasible solution was to discharge the water after an extra ozonation step, which resulted in a high total ozone dosage. The alternative, the consecutive treatment activated sludge–ozonation–activated sludge, did not give a better COD-removal with the same ozone dose as the integrated concept. The economic evaluation proves that the integrated chemical and biological treatment is expensive for the paper industry if a low discharge limit of COD has to be complied with.

Anaerobic Digestion of Municipal Solid Wastes

1986 ◽  
Vol 18 (12) ◽  
pp. 163-175 ◽  
Author(s):  
W. Schmidell ◽  
A. M. Craveiro ◽  
C. S. Peres ◽  
Y. S. Hirata ◽  
R. F. Varella
Keyword(s):  
Anaerobic Digestion ◽  
Sewage Sludge ◽  
Future Trend ◽  
Organic Loading Rate ◽  
Municipal Solid Wastes ◽  
Start Up ◽  
The Future ◽  
Solids Content ◽  
Ph Range ◽  
High Solids Content

This paper discusses the present state of municipal solid waste (MSW) disposal in Brazil , focusing on the particular situation in the City of Sao Paulo, and indicates the future trend of the anaerobic digestion approach for this residue. Also, some results, representative of several studies developed at IPT on anaerobic digestion of MSW mixed with primary sewage sludge, are presented. These studies were conducted using agitated reactors of 2 or 8 liters capacity, continuously operated at 35°C and in the pH range 6.8 to 7.2. The studies were on: start-up of reactors, MSW to sewage sludge ratio, organic loading rate and hydraulic retention time. The results presented in this paper indicate the great interest in achieving anaerobic digestion of MSW in presence of sewage sludge, utilizing reactors with high solids content, which is the approach already observed, and certainly will be developed in the future.

scholarly journals Tree-based automated machine learning to predict biogas production for anaerobic co-digestion of organic waste

2021 ◽  
Author(s):  
Yan Wang ◽  
Tyler Huntington ◽  
Corinne Donahue Scown
Keyword(s):  
Machine Learning ◽  
Anaerobic Digestion ◽  
Organic Waste ◽  
Municipal Wastewater ◽  
Biogas Production ◽  
Treatment Plant ◽  
Operating Conditions ◽  
Operating Parameters ◽  
Time Lags ◽  
Biogas Yield

The dynamics of microbial communities involved in anaerobic digestion of mixed organic waste are notoriously complex and difficult to model, yet successful operation of anaerobic digestion is critical to the goals of diverting high-moisture organic waste from landfills. Machine learning (ML) is ideally suited to capturing complex and nonlinear behavior that cannot be modeled mechanistically. This study uses 8 years of data collected from an industrial-scale anaerobic co-digestion (AcoD) operation at a municipal wastewater treatment plant in Oakland, California, combined with a powerful automated ML method, Tree-based Pipeline Optimization Tool, to develop an improved understanding of how different waste inputs and operating conditions impact biogas yield. The model inputs included daily input volumes of 31 waste streams and 5 operating parameters. Because different wastes are broken down at varying rates, the model explored a range of time lags ascribed to each waste input ranging from 0 to 30 days. The results suggest that the waste types (including rendering waste, lactose, poultry waste, and fats, oils, and greases) differ considerably in their impact on biogas yield on both a per-gallon basis and a mass of volatile solids basis, while operating parameters are not useful predictors in a carefully operated facility.

scholarly journals Economic Analysis of The Innovative Eco-Biofilter /Membrane Bioreactor (MBR) System for Community Wastewater Recycling

2020 ◽  
Vol 24 (5) ◽  
pp. 41-54
Author(s):  
Sakran Taesopapong ◽  
Chavalit Ratanatamskul ◽  
Pongsa Pornchaiwiseskul
Keyword(s):  
Wastewater Treatment ◽  
Economic Analysis ◽  
Willingness To Pay ◽  
Water Reuse ◽  
Membrane Bioreactor ◽  
Contingent Valuation Method ◽  
Statistical Significance ◽  
Cost Ratio ◽  
Plastic Pollution ◽  
Treated Effluent

A prototype Eco-biofilter/MBR (Membrane Bioreactor) system has been developed and installed at a community in Chiang Rak Yai Sub-district, Sam Khok District, Pathum Thani Province, Thailand for community wastewater treatment and recycling. This research aims to investigate the performance of Eco-biofilter/MBR system, as well as the economic analysis of willingness to pay for wastewater treatment. A novel porous baked clay biofilter was also developed as an eco-friendly filter media to replace traditional plastic filter in order to reduce plastic pollution to water environment. The effluent quality from the system could meet the international standard for agricultural water reuse. The survey data for economic analysis were collected from the 281 households living in the studied area, analyzed by descriptive statistic and Contingent Valuation Method. The results show the fact that household’s land use has an inverse relationship while the water source use positively correlates to the value of willingness to pay for wastewater treatment at the statistical significance level of 0.05. The economic analysis of the innovative wastewater treatment system reveals the appropriate wastewater treatment fee at 7 THB per cubic meter of wastewater that is a breakeven point. In addition, the Eco-biofilter/MBR also shows many benefits both of direct and indirect benefits such as water reuse potential, opportunity economic value of treated effluent, and reducing medical expenses. The benefit to cost ratio is equal to 1.04.

scholarly journals The Removal of Selected Inorganics from Municipal Membrane Bioreactor Wastewater Using UF/NF/RO Membranes for Water Reuse Application: A Pilot-Scale Study

Membranes ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 117 ◽  
Author(s):  
Mujahid Aziz ◽  
Godwill Kasongo
Keyword(s):  
Water Reuse ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Cooling System ◽  
Irrigation System ◽  
Engineering Application ◽  
Pilot Scale ◽  
Operating Conditions ◽  
High Electron ◽  
Municipal Wastewater Treatment

Membrane technology has advanced substantially as a preferred choice for the exclusion of widespread pollutants for reclaiming water from various treatment effluent. Currently, little information is available about Ultrafiltration (UF)/Nanofiltration (NF)/Reverse Osmosis (RO) performance at a pilot scale as a practical engineering application. In this study, the effluent from a full-scale membrane bioreactor (MBR) municipal wastewater treatment works (MWWTWs) was treated with an RO pilot plant. The aim was to evaluate the effect of operating conditions in the removal of selected inorganics as a potential indirect water reuse application. The influent pH, flux, and membrane recovery were the operating conditions varied to measure its influence on the rejection rate. MBR/RO exhibited excellent removal rates (>90%) for all selected inorganics and met the standard requirements for reuse in cooling and irrigation system applications. The UF and NF reduction of inorganics was shown to be limited to meet water standards for some of the reuse applications due to the high Electron Conductivity (EC > 250 μS·cm−1) levels. The MBR/NF was irrigation and cooling system compliant, while for the MBR/UF, only the cooling system was compliant.

Sign in / Sign up

Export Citation Format

Share Document