Membrane Bioreactors Factsheet
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Anaerobic Digestion of Wastewater Sludge (Nazaroff & Alvarez-Cohen, Section 6.E.3)
Anaerobic Digestion of Wastewater Sludge (Nazaroff & Alvarez-Cohen, Section 6.E.3) nice, clean water going to disinfection and then to outdoor body of receiving water (stream, lake or sea) sludge in need of further treatment The goal is to reduce the amount of sludge that needs to be disposed. The most widely employed method for sludge treatment is anaerobic digestion. In this process, a large fraction of the organic matter (cells) is broken down into carbon dioxide (CO2) and methane (CH4), and this is accomplished in the absence of oxygen. About half of the amount is then converted into gases, while the remainder is dried and becomes a residual soil-like material. What the equipment looks like The tank is capped - to prevent oxygen from coming in, - to prevent odors from escaping, and - to capture the methane produced. This methane, a fuel, can be used to meet some of the energy requirements of the wastewater treatment facility (co-generation). What the sludge looks like after anaerobic digestion and subsequent drying. It is rich in nitrates and performs well as a fertilizer. (Photos from http://www.madep-sa.com/english/wwtp.html) 1 (Originally from Metcalf & Eddy, 1991) from & Metcalf Eddy, (Originally 6.E.7) Figure Alvarez-Cohen, & (Nazaroff How the system works The treatment of wastewater sludge, from both primary and secondary treatment steps, consists of two main phases. ● In the 1st step, all incoming flows of sludge are combined, and the mixture is heated to a mild temperature (about body temperature) to accelerate biological conversion. The residence time here ranges from 10 to 20 days. -
Sewage Secondary Treatment After Primary Treatment, the Sewage Water Is Subjected to the Next Phase Called Biological Treatment Or Secondary Treatment
Sewage secondary treatment After primary treatment, the sewage water is subjected to the next phase called biological treatment or secondary treatment. Dissolved and suspended biological materials are removed by indigenous microbial decomposition in a managed environment. In this treatment, BOD is reduced up to 90-95%. Biological treatment is carried out in two important phases: 1. Aerobic phase: oxidation lagoons trickling filters, activated sludge 2. Anaerobic phase: sludge digestion A. Oxidation lagoons /oxidation ponds / stabilization ponds 1. It is outdoor, simple, suspension type aerobic treatment. 2. It is suggested for small societies in rural areas where sufficient low lying land of little real state value is available. 3. It is oldest of the sewage treatment systems used in most of developing countries due to its low cost. 4. In this shallow pond is required which should be maximum of 10 feet depth having inlet and outlet. 5. It consists of three different zones as shown in the following diagram: Requirements of Oxidation pond: 1. Presence of algal growth which produces oxygen. 2. Oxygen is also available from atmosphere. 3. Heterotrophic aerobic and anaerobic microbes for decomposing sewage. 4. Sunlight required for photosynthesis, also has bactericidal properties (UV). Advantages of oxidation pond: 1. Simple 2. Inexpensive 3. Low maintenance Disadvantages of oxidation pond: 1. Effected by environment: low temperature, cloudy sky lowers efficiency 2. Takes longer time(Long retention time) 3. Gives bad odour(H2 S) 4. Not hygienic 5. Just lowers BOD by 25%to 60% B. Trickling Filter Method 1. It is also outdoor, aerobic, relatively simple but of film flow type. -
Cellular Transport Notes About Cell Membranes
Cellular Transport Notes @ 2011 Center for Pre-College Programs, New Jersey Institute of Technology, Newark, New Jersey About Cell Membranes • All cells have a cell membrane • Functions: – Controls what enters and exits the cell to maintain an internal balance called homeostasis TEM picture of a – Provides protection and real cell membrane. support for the cell @ 2011 Center for Pre-College Programs, New Jersey Institute of Technology, Newark, New Jersey 1 About Cell Membranes (continued) 1.Structure of cell membrane Lipid Bilayer -2 layers of phospholipids • Phosphate head is polar (water loving) Phospholipid • Fatty acid tails non-polar (water fearing) • Proteins embedded in membrane Lipid Bilayer @ 2011 Center for Pre-College Programs, New Jersey Institute of Technology, Newark, New Jersey Polar heads Fluid Mosaic love water Model of the & dissolve. cell membrane Non-polar tails hide from water. Carbohydrate cell markers Proteins @ 2011 Center for Pre-College Programs, New Jersey Institute of Technology, Newark, New Jersey 2 About Cell Membranes (continued) • 4. Cell membranes have pores (holes) in it • Selectively permeable: Allows some molecules in and keeps other molecules out • The structure helps it be selective! Pores @ 2011 Center for Pre-College Programs, New Jersey Institute of Technology, Newark, New Jersey Structure of the Cell Membrane Outside of cell Carbohydrate Proteins chains Lipid Bilayer Transport Protein Phospholipids Inside of cell (cytoplasm) @ 2011 Center for Pre-College Programs, New Jersey Institute of Technology, Newark, New Jersey 3 Types of Cellular Transport • Passive Transport celldoesn’tuseenergy 1. Diffusion 2. Facilitated Diffusion 3. Osmosis • Active Transport cell does use energy 1. -
(MBR) Technology for Wastewater Treatment and Reclamation: Membrane Fouling
membranes Review Membrane Bioreactor (MBR) Technology for Wastewater Treatment and Reclamation: Membrane Fouling Oliver Terna Iorhemen *, Rania Ahmed Hamza and Joo Hwa Tay Department of Civil Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada; [email protected] (R.A.H.); [email protected] (J.H.T.) * Correspondence: [email protected]; Tel.: +1-403-714-7451 Academic Editor: Marco Stoller Received: 14 April 2016; Accepted: 12 June 2016; Published: 15 June 2016 Abstract: The membrane bioreactor (MBR) has emerged as an efficient compact technology for municipal and industrial wastewater treatment. The major drawback impeding wider application of MBRs is membrane fouling, which significantly reduces membrane performance and lifespan, resulting in a significant increase in maintenance and operating costs. Finding sustainable membrane fouling mitigation strategies in MBRs has been one of the main concerns over the last two decades. This paper provides an overview of membrane fouling and studies conducted to identify mitigating strategies for fouling in MBRs. Classes of foulants, including biofoulants, organic foulants and inorganic foulants, as well as factors influencing membrane fouling are outlined. Recent research attempts on fouling control, including addition of coagulants and adsorbents, combination of aerobic granulation with MBRs, introduction of granular materials with air scouring in the MBR tank, and quorum quenching are presented. The addition of coagulants and adsorbents shows a significant membrane fouling reduction, but further research is needed to establish optimum dosages of the various coagulants/adsorbents. Similarly, the integration of aerobic granulation with MBRs, which targets biofoulants and organic foulants, shows outstanding filtration performance and a significant reduction in fouling rate, as well as excellent nutrients removal. -
How Is Wastewater Treated (PDF)
FOLD FOLD FOLD We Need Your Help Industrial Service Area How is Pretreatment Here are three easy things you can do to protect The City of Everett’s wastewater treatment Wastewater water quality and minimize treatment cost. plant, called the Everett Water Pollution Control unicipal treatment plants like the EWPCF are Facility (EWPCF), is located on Smith Island 1. Keep trash out of the system. designed to treat residential and commercial in North Everett. The EWPCF serves more than Treated? ■ M Put hair, feminine hygiene products, wastewater. However, some industrial 133,000 people including all of Everett and cotton swabs and grease in the wastewater contains pollutants that primary and parts of Mukilteo, Silver Lake and Alderwood. garbage. secondary treatment cannot remove. The plant treats an average of 20 million 2. Reduce your water consumption. This wastewater requires industrial pretreatment gallons of wastewater per day, although the ■ Conserving water saves money and to remove metals, acids or other chemicals, influent volume to the plant can increase to protects the environment since the less or in the case of food services, most fats almost 100 million gallons on rainy days. water you use, the less wastewater we and grease. City staff work with industrial have to treat. customers to remove these pollutants before the 3. Keep hazardous waste out of the system. wastewater is sent to the treatment plant. ■ Never put hazardous waste down the drain. Hazardous waste includes pesticides, herbicides, solvents, paint thinners and engine oil. Hazardous Biosolids waste is any material that can catch fire, Port explode, corrode or is toxic. -
Anaerobic Digestion of Primary Sewage Effluent
Anaerobic Digestion of Primary Sewage Effluent Prepared for the U.S. Department of Energy Office of Electricity Delivery and Energy Reliability Under Cooperative Agreement No. DE-EE0003507 Hawai‘i Energy Sustainability Program Subtask 3.4: Biomass Submitted by Hawai‘i Natural Energy Institute School of Ocean and Earth Science and Technology University of Hawai‘i September 2014 Acknowledgement: This material is based upon work supported by the United States Department of Energy under Cooperative Agreement Number DE-EE0003507. Disclaimer: This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference here in to any specific commercial product, process, or service by tradename, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. SUMMARY A hybrid system comprised an up-flow packed bed anaerobic reactor and a down-flow trickling-filter reactor connected in series was shown to effectively treat primary clarifier effluent. When a clarifier and sand filter were added to the system, the effluent water quality achieved values of BOD5 and TSS that were below the EPA’s water discharge limits of 30 mg/l and equivalent to highly efficient activated sludge systems. -
Biopharma PAT Quality Attributes, Critical Process Parameters & Key
Biopharma PAT Quality Attributes, Critical Process Parameters & Key Performance Indicators at the Bioreactor May 2018 White Paper: Biopharma PAT Quality Attributes, Critical Process Parameters & Key Performance Indicators at the Bioreactor Table of Contents PAT Building Blocks .................................................................................................... 3 PAT for Biopharma ...................................................................................................... 5 Culture & Fermentation Process Types ....................................................................... 6 Monitoring Methods .................................................................................................... 8 Critical Process Parameters ...................................................................................... 10 Critical Quality Attributes & Key Performance Indicators ........................................... 14 Recent Applications of In-situ VCD & TCD ................................................................ 17 Conclusions .............................................................................................................. 19 References ................................................................................................................ 20 Focus Spots Intelligent Arc Sensors for pH and DO in-situ Measurement...................................... 10 Dissolved Oxygen User’s Experiences ...................................................................... 11 In-situ Cell Density -
EPPH2009's Guide 2
Part I Conference Schedule June 14 ~ June 16, 2009 09:00-20:00 Registration Location: Lobby, Friendship Palace, Beijing Friendship Hotel, Beijing Note: You can register at any time during the conference Monday Morning, June 15 Time Activity Location: 2nd floor, Ju Ying Ting in Friendship Palace, Beijing Friendship Hotel 08:30-09:00 Opening Ceremony Plenary Speech 1: Combining Data and Numerical Modeling for Improving the Predictive Ability of Eco- 09:00-09:45 system and Water Quality Model of the Chesapeake Bay and Virginia Tributaries, USA , Prof. Jian Shen, College of William and Mary, USA Plenary Speech 2: Environment and Human Health: Integrating Scientific Developments into Practical En- 09:45-10:30 vironmental Applications for the Improvement of Human Health , Dr. Yue Ge , US Environmental Protection Agency, USA 10:30-10:50 Coffee Break 10:50-11:35 Plenary Speech 3: The 21st Century Water Quality, Safety and Monitoring Issues , Prof. George Zhaoguang Yang , Centre for Advanced Water Technology, Singapore Public Utilities Board, Singapore Monday Noon, June 15 12:00-13:30 Lunch Location: 1st floor, restaurant in Friendship Palace, Beijing Friendship Hotel Monday Afternoon, June 15 Location (1 st floor, Beijing Time Activity Friendship Hotel) Oral_1: Modeling and Measuring of Water Pollution Room 1 in Meeting Hall 14:00 - 15:30 Oral_2: New Wastewater Treatment Technologies Room 2 in Meeting Hall Coffee Break Oral_3: Treatment, Disposal and Discharge of Wastewater Room 3 in Meeting Hall Oral_4: Methods of Monitoring Water Quality Room -
Comparison Between Continuous and Intermittent Model on the Performance of a Pilot-Scale Anoxic/Oxic Membrane Bioreactor for Toilet Wastewater Reuse System
Research Article Adv Biotech & Micro Volume 4 Issue 3 - July 2017 Copyright © All rights are reserved by Lijie Zhou DOI: 10.19080/AIBM.2017.04.555639 Comparison between Continuous and Intermittent Model on the Performance of a Pilot-Scale Anoxic/Oxic Membrane Bioreactor for Toilet Wastewater Reuse System Lijie Zhou1,2*, Shufang Yang3 and Xiufang Shen2 1College of Chemistry and Environmental Engineering, Shenzhen University, China 2State Environmental Protection Key Laboratory of Drinking Water Source Management and Technology, Shenzhen Academy of Environmental Sciences, China 3Shenzhen Municipal Design & Research Institute Co. Ltd, China Submission: May 25, 2017; Published: July 25, 2017 *Corresponding author: Lijie Zhou, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Shenzhen, State Environmental Protection Key Laboratory of Drinking Water Source Management and Technology, Shenzhen Key Laboratory of Drinking Water Source Safety Control, Shenzhen Key Laboratory of Emerging Contaminants Detection & Control in Water Environment, Shenzhen Academy of Environmental Sciences, Guangdong Shenzhen 518001, China, Tel: ; Fax: ; Email: Abstract Membrane bioreactor (MBR) is a novel and effective technology, which is widely applied in wastewater treatment and water reuse. A generation, continuous and intermittent models were applied, respectively, for this reuse system. This study aimed to identify the comparison betweenpilot-scale continuous anoxic/oxic and MBR intermittent (A/O-MBR) model was on set the up performance to reuse toilet of A/O-MBRwastewater for for toilet a 5-floor wastewater lab building. reuse system. Because Due of tolow remaining volume wastewater sludge and high DO, both continuous and intermittent model showed a great performance on CODCr and NH4+-N removal. -
Stachytarpheta Cayennensis Aqueous Extract, a New Bioreactor Towards Silver Nanoparticles for Biomedical Applications
Journal of Biomaterials and Nanobiotechnology, 2019, 10, 102-119 http://www.scirp.org/journal/jbnb ISSN Online: 2158-7043 ISSN Print: 2158-7027 Stachytarpheta cayennensis Aqueous Extract, a New Bioreactor towards Silver Nanoparticles for Biomedical Applications Francois Eya’ane Meva1,2* , Joel Olivier Avom Mbeng1, Cecile Okalla Ebongue1,3, Carsten Schlüsener2, Ülkü Kökҫam-Demir2, Agnes Antoinette Ntoumba4, Phillipe Belle Ebanda Kedi4, Etienne Elanga1, Evrard-Rudy Njike Loudang1, Moise Henri Julien Nko’o1, Edmond Tchoumbi1, Vandi Deli1, Christian Chick Nanga1, Emmanuel Albert Mpondo Mpondo1, Christoph Janiak2 1Department of Pharmaceutical Sciences, Faculty of Medicine and Pharmaceutical Sciences, University of Douala, Douala, Cameroon 2Institute for Inorganic Chemistry and Structural Chemistry, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany 3Clinical Biology Laboratory, General Hospital of Douala, Douala, Cameroon 4Department of Animal Biology and Physiology, Faculty of Science, University of Douala, Douala, Cameroon How to cite this paper: Meva, F.E., Abstract Mbeng, J.O.A., Ebongue, C.O., Schlüsener, C., Kökҫam-Demir, Ü., Ntoumba, A.A., Kedi, This study reports the preparation and characterization of silver nanopar- P.B.E., Elanga, E., Loudang, E.-R.N., Nko’o, ticles synthesized by the mediation of the plant weed Stachytarpheta cayen- M.H.J., Tchoumbi, E., Deli, V., Nanga, C.C., nensis through solution method. Ultraviolet visible spectroscopy (UV-Vis) Mpondo, E.A.M. and Janiak, C. (2019) Sta- chytarpheta cayennensis Aqueous Extract, a determines the presence of nanoparticles in the solution. Infrared spectros- New Bioreactor towards Silver Nanopar- copy (IR) proves organic molecules at the particles interface. Powder X-ray ticles for Biomedical Applications. Journal diffraction (PXRD) provides phase composition and crystallinity. -
Bioreactor Studies of Heterologous Protein Production by Recombinant Yeast
BIOREACTOR STUDIES OF HETEROLOGOUS PROTEIN PRODUCTION BY RECOMBINANT YEAST by ZHIGEN ZWNG A thesis presented to the University of Waterloo in fulNlment of the thesis quinment for the degree of Doctor of Philosophy in Chernical Engineering Waterloo, Ontario, Canada, 1997 @ Zhigen Zhang 1997 National tibrary Bibliothi?que nationale l*l dm, du Canada Acquisitions and Acquisitions et Bibliographie Services seMces bubriographiques 395 wellaStreet 395, me wdtingtori OrtawaON KIAW ûtiawaOlJ K1AûN4 Canada Canada Va#& Voinciilline, avm Nom- The author has pteda non- L'auteur a accordé une licence non exclusive licence dowiug the exclwe permettant il Ia National Ijiiiof Canada to Bibliothèque nationale du Cadade reproduce, 10- disttibute or sell reprodnire, *, distn'buerou copies of bis/her thesis by any means vendre des copies de sa thése de and in any fonn or fomLaf making qyelqy manière et sous quelque this thesis avaiiable to interested forme que ce soit pour mettre des persofls- exemplaires de cette thèse à la disposition des persornes intéressées. The auîhor retains owndpof the L'auteur conserve la propriété du copyright m Merthesis. Neither droit d'auteur qui protège sa thèse. Ni the thesis nor substsmtial extracts la thèse ni &s extmits substantiels de fiom it may be printed or otherwiSe celleci ne doivent être imprimés ou reproduced with the author's autrement reproduits sans son permission. autorisalian, nie University of Waterloo requin% the signatures of ali pesons using or photocopying this thesis. Please sign below. and give address and dite. ABSTRACT Fundamend enginee~gstudies were carried out on heterologous protein production using a recombinant Saccharomyces cerevisiae sPain (C468fpGAC9) which expresses Aspergillus mamon glucoamylase gene and secretes glucoamylase into the extracellular medium, as a model system. -
Treatment and Biosolids Technologies
Treatment and Biosolids Technologies City of Morro Bay New Water Reclamation Facility Engineering Component of Siting Study • Project engineering team will look at the following parameters related to each site: – Range of cost for conveyance, treatment, and distribution to potential users – Land availability for range of treatment and biosolids management options • A range of treatment technologies can reach City objectives – Keep options open during preliminary planning Public Workshop Results Top‐Ranked Issues from Dot Exercise • Environmental – Avoid Visual Impacts • Cost Issues – Keep Costs Low (highest score) • Engineering and Design – Recharge Morro Aquifer Overview • Environmental – Effluent reuse goals – Quality and Quantity – Conveyance methods for recycled water • Cost Issues / Engineering and Design – Liquid treatment technologies – Biosolids processing technologies / products – Procurement Treatment Processes • Preliminary – Screening of large solids • Primary –Flotation & settling • Secondary – Biological Treatment Source of • Tertiary – Filtration Biosolids • Disinfection • Advanced – Salts – Contaminants of Emerging Concern Treatment Process Selection Driven by End Goals 1. Start with effluent reuse goals 2. Identify treatment technologies to meet those goals 3. Develop plan for handling biosolids from range of liquid treatment options Effluent Reuse Goals ‐ Quantity • “How much” varies seasonally • Evapotranspiration rates determine potential use for irrigation • Wet weather or production of “off‐spec” water often require