Effectiveness Of Disinfecting Wastewater Treatment Plant Discharges Case Of Chemical Disinfection Using Performic Acid
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Effectiveness Of Disinfecting Wastewater Treatment Plant Discharges Case Of Chemical Disinfection Using Performic Acid
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Author : Vincent Rocher
language : en
Publisher: IWA Publishing
Release Date : 2021-04-15
Effectiveness Of Disinfecting Wastewater Treatment Plant Discharges Case Of Chemical Disinfection Using Performic Acid written by Vincent Rocher and has been published by IWA Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-04-15 with Science categories.
"Cultural aversion to microbes, healthiness or desire for safe bathing, the applications for water disinfection are varied and the technologies used to achieve this goal are numerous. The authors looked at a simple solution to implement: the use of a reagent called performic acid. Consequently, more than two years of applied research, observations and analyzes were necessary to demonstrate its harmlessness towards the natural environment. The strength of the demonstration lies in the cross-vision of many researchers and scientists from different backgrounds who shared their studies and observations. The strength of this testimony also lies in the diversity of the application cases, including notable and sensitive receiving environments as different as the Seine, the Atlantic Ocean or the Venice lagoon. Through its intentions and results, this work is a step, moving forward the 2030 Agenda for Sustainable Development, particularly SDG 6 “clean water and sanitation” relying on the lever of SDG 17 “partnerships for the goals”." Denis Penouel, Deputy CEO in charge of Prospective
Life Cycle Assessment For Wastewater Disinfection Using Sodium Hypochlorite Peracetic Acid Or Performic Acid
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Author : Elena Penkarski-Rodon
language : en
Publisher:
Release Date : 2018
Life Cycle Assessment For Wastewater Disinfection Using Sodium Hypochlorite Peracetic Acid Or Performic Acid written by Elena Penkarski-Rodon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
"As the need for safe water is increasing, engineers are working on finding more efficient and environment-friendly technologies for disinfection of wastewater in order to provide safe water for discharge into the environment. Chlorination, using sodium hypochlorite (NaOCl), is one of the most commonly used disinfection methods. In recent years, extensive research has been done on performic (PFA) and peracetic acid (PAA), as they have a high oxidation potential and therefore can reduce bacterial and other types of contamination in wastewater. Life Cycle Assessment (LCA) is a holistic method used in order to investigate the environmental footprint of a product or a service over its entire life cycle, i.e. from "cradle-to-grave". The objective of the thesis is to use LCA to demonstrate the advantages in using either NaOCl, PAA or PFA for wastewater disinfection, from an environmental and health perspective. USEtox and Impact 2002+ models were used in order to evaluate their impacts on freshwater toxicity, human toxicity, climate change, mineral resources and non-renewable energy depletion. Data for the study were provided by a treatment plant in Italy near Venice that has performed full-scale disinfection trials using NaOCl, PAA and PFA, and by the North West Langley treatment plant near Vancouver, which traditionally used NaOCl for chlorination and sodium bisulfite for dechlorination, but transitioned to PAA disinfection in 2014. The functional unit for the Venice treatment plant is the removal of 3 log of E. coli from the effluent at a flow of 27 MLD during two months. For the NW Langley treatment plant, the functional unit was the disinfection of the effluent to the limit of 200 MPN/100 ml fecal coliforms at the edge of the dilution zone, from April to October and at a flow of 11.5 MLD. The LCA includes chemical production, infrastructure directly related to disinfection at the treatment plant, ancillary equipment for disinfection, transportation of equipment and the disinfectants, electricity for disinfection process itself as well as the residuals from disinfection. Results from the Venice treatment plant indicate that PFA could be the best option for wastewater disinfection due to the low dose needed to achieve regulatory limits, which reduces the potential impact of chemical production as well as transport. While PFA is more toxic than PAA, the residual concentration is lower leading to similar potential impacts on toxicity. Results from the NW Langley WWTP indicate that dechlorination significantly reduces potential impacts of chlorine on freshwater toxicity, however impacts on human toxicity, climate change and resource consumption (mineral and non-renewable energy) are increased due to the added production and transport of sodium bisulfite. The best choice of disinfectant at NW Langley therefore depends on the environmental priorities of the decision makers and government regulations. For each disinfectant, production is the highest contributor to total potential impacts on climate change, human toxicity and resource depletion. The highest contributor to freshwater toxicity impacts is the chemical residual from disinfection. The choice of chemical disinfectant also depends on regulations, cost and technologies available. The DesinFix unit is only being used in Europe; at this time the US EPA and the Canadian government have not yet approved the use of PFA for wastewater disinfection. Nonetheless, with upcoming reviews in regulations, PFA could soon be available in more countries. Furthermore, a cost analysis would give more information on the economic benefits of using one disinfectant over another. " --
Postharvest Disinfection Of Fruits And Vegetables
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Author : Mohammed Wasim Siddiqui
language : en
Publisher: Academic Press
Release Date : 2018-08-13
Postharvest Disinfection Of Fruits And Vegetables written by Mohammed Wasim Siddiqui and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-13 with Technology & Engineering categories.
Postharvest Disinfection of Fruits and Vegetables describes available technologies to reduce microbial infection for maintaining postharvest quality and safety. The book analyzes alternative and traditional methodologies and points out the significant advantages and limitations of each technique, thus facilitating both cost and time savings. This reference is for anyone in the fresh produce industry who is involved in postharvest handling and management. It discusses, in detail, the latest disinfection approaches, low-cost treatment strategies, management and protocols to control fresh produce qualities, diseases and insect infestation. Includes methods to reduce microbial contamination using chlorination, ozone, pulsed light, irradiation and plasma technology Provides practical applications of recently developed, natural anti-microbial agents for eco-friendly and sustainable solutions Explores various disinfection technologies for quality assurance and for the development of potential new technologies
Wastewater Disinfection
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Author :
language : en
Publisher:
Release Date : 1996
Wastewater Disinfection written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Sewage categories.
Hazardous Chemicals Handbook
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Author : P A CARSON
language : en
Publisher: Elsevier
Release Date : 2013-10-22
Hazardous Chemicals Handbook written by P A CARSON and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Technology & Engineering categories.
Summarizes core information for quick reference in the workplace, using tables and checklists wherever possible. Essential reading for safety officers, company managers, engineers, transport personnel, waste disposal personnel, environmental health officers, trainees on industrial training courses and engineering students. This book provides concise and clear explanation and look-up data on properties, exposure limits, flashpoints, monitoring techniques, personal protection and a host of other parameters and requirements relating to compliance with designated safe practice, control of hazards to people's health and limitation of impact on the environment. The book caters for the multitude of companies, officials and public and private employees who must comply with the regulations governing the use, storage, handling, transport and disposal of hazardous substances. Reference is made throughout to source documents and standards, and a Bibliography provides guidance to sources of wider ranging and more specialized information. Dr Phillip Carson is Safety Liaison and QA Manager at the Unilever Research Laboratory at Port Sunlight. He is a member of the Institution of Occupational Safety and Health, of the Institution of Chemical Engineers' Loss Prevention Panel and of the Chemical Industries Association's `Exposure Limits Task Force' and `Health Advisory Group'. Dr Clive Mumford is a Senior Lecturer in Chemical Engineering at the University of Aston and a consultant. He lectures on several courses of the Certificate and Diploma of the National Examining Board in Occupational Safety and Health. [Given 5 star rating] - Occupational Safety & Health, July 1994 - Loss Prevention Bulletin, April 1994 - Journal of Hazardous Materials, November 1994 - Process Safety & Environmental Prot., November 1994
Aquaculture Engineering
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Author : Odd-Ivar Lekang
language : en
Publisher: John Wiley & Sons
Release Date : 2013-01-15
Aquaculture Engineering written by Odd-Ivar Lekang and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-01-15 with Technology & Engineering categories.
As aquaculture continues to grow at a rapid pace, understanding the engineering behind aquatic production facilities is of increasing importance for all those working in the industry. Aquaculture engineering requires knowledge of the many general aspects of engineering such as material technology, building design and construction, mechanical engineering, and environmental engineering. In this comprehensive book now in its second edition, author Odd-Ivar Lekang introduces these principles and demonstrates how such technical knowledge can be applied to aquaculture systems. Review of the first edition: 'Fish farmers and other personnel involved in the aquaculture industry, suppliers to the fish farming business and designers and manufacturers will find this book an invaluable resource. The book will be an important addition to the shelves of all libraries in universities and research institutions where aquaculture, agriculture and environmental sciences are studied and taught.' Aquaculture Europe 'A useful book that, hopefully, will inspire successors that focus more on warm water aquaculture and on large-scale mariculture such as tuna farming.' Cision
Principles And Practice Of Disinfection Preservation And Sterilisation
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Author : Allan Denver Russell
language : en
Publisher: Blackwell Publishing
Release Date : 1999-02-04
Principles And Practice Of Disinfection Preservation And Sterilisation written by Allan Denver Russell and has been published by Blackwell Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-02-04 with Medical categories.
The impact of micro-organisms on the human world is enormous: they pose a threat to human health in many settings such as food manufacturing, drug laboratories, hospitals and swimming pools, and are also responsible for damage to a wide variety of manufactured products including paper, textiles, wood, leather, fuel, lubricants, cosmetics and construction materials. This book explains the basic scientific principle involved in disinfection, preservation and sterilisation and describes in detail how they are applied in practice. As such, it is an invaluable reference for all those involved in the fight against micro-organisms, whether in hospitals, catering, manufacturing industry, food and recreation industry, or public services. Since the publication of the second edition, there has been a great deal of interest in the field of virucidal agents, particularly in hospitals. As a result, Chapter 6 has been enlarged and updated to reflect this keen interest.
Handbook For Cleaning Decontamination Of Surfaces
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Author : Ingegard Johansson
language : en
Publisher: Elsevier
Release Date : 2007-06-20
Handbook For Cleaning Decontamination Of Surfaces written by Ingegard Johansson and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-06-20 with Science categories.
The focus of Handbook for Cleaning/Decontamination of Surfaces lies on cleaning and decontamination of surfaces and solid matter, hard as well as soft. Bringing together in a 2-volume reference source: - current knowledge of the physico-chemical fundamentals underlying the cleaning process; - the different needs for cleaning and how these needs are met by various types of cleaning processes and cleaning agents, including novel approaches; - how to test that cleaning has taken place and to what extent; - the effects of cleaning on the environment; - future trends in cleaning and decontamination, for example the idea of changing surfaces, to hinder the absorbance of dirt and thus make cleaning easier. A brief introduction is given to the legal demands concerning the environment and a historical background, in terms of development of detergents, from soaps to the modern sophisticated formulations. Bactericides, their use and the environmental demands on them are covered. Thorough discussions of mechanisms for cleaning are given in several chapters, both general basic concepts and special cases like particle cleaning and cleaning using microemulsion concepts. * General understanding of how cleaning works, function of ingredients and formulations * Overview of environmental issues and demands from the society in the area * Gives basic formulas for cleaning preparations in most areas
Homogeneous And Heterogeneous Photocatalysis
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Author : E. PELIZZETTI
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Homogeneous And Heterogeneous Photocatalysis written by E. PELIZZETTI and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Ever since the oil crisis of 1973, researchers in various fields of chemistry have proposed various schemes to conserve energy, as well to convert the sun's abundant and limitless supply of energy to produce chemical fuels (e. g. , hydrogen from water, . •. ). The enthusiasm had no previous parallel in the mid-1970's. Unfortunately, despite the several good proposals, the results have proven - in retrospect - somewhat disappointing from an economic viable point of view. The reasons for the meagre results are manyfold not the least of which are the experimental difficulties encountered in storage systems. Moreover, the lack of a concerted, well orchestrated interdisciplinary approach has been significant. By contrast, the chemical advances made in the understanding of the processes involved in such schemes have been phenomenal. A recent book on this issue ( M. Gratzel, Energy Resources through Photochemistry and Catalysis, 1983) is witness to the various efforts and approaches taken by researchers. In the recent years, many more groups have joined in these efforts, and the number of papers in the lit~rature is staggering ! One of the motives for organizing this NATO Advanced Research Workshop stemmed from our view that it was time to take stock of the accomplishments and rather than propose new schemes, it was time to consider seriously avenues that are most promising.
Water Treatment Manual
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Author :
language : en
Publisher:
Release Date : 19??
Water Treatment Manual written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 19?? with Feed-water purification categories.
