Taste and odour removal from an urban groundwater establishment – a case study

2000 ◽  
Vol 42 (1-2) ◽  
pp. 123-128 ◽  
Author(s):  
E. Ortenberg ◽  
L. Groisman ◽  
C. Rav-Acha
Keyword(s):  
Hydrogen Sulfide ◽  
Chlorine Dioxide ◽  
Urban Groundwater ◽  
Partial Solution ◽  
Deep Groundwater ◽  
Advantages And Disadvantages ◽  
Water Characteristics ◽  
Chemical Oxidants ◽  
Odour Removal

A deep groundwater well was established in a village near Tel-Aviv, in order to supply drinking water for its 30,000 inhabitants. Although all water characteristics were within the range permitted by the Israeli regulations, operators received complaints about a funny taste and a rotten-egg odour in the water. This was attributed to the presence of 0.38 mgL–1 hydrogen sulfide. Removing the odour by the usual method of aeration was impossible because of the populated surroundings. Therefore it was decided to examine chemical oxidants for taste and odour removal. A treatment with 8 mgL–1 of chlorine successfully oxidized hydrogen sulfide but the complaints continued. This was attributed to the formation of elemental sulfur, whichis converted into polysulfide that may hydrolyze to regenerate the odourous hydrogen sulfide. Treatment with 2 mgL–1 of chlorine dioxide successfully eliminates odour completely, but produces chlorite and chlorate which are above the permitted levels. A partial solution to this problem was found by a consequential treatment with 2 mgL–1 of ClO2 for 10 min. followed by 1.5 mgL–1 of chlorine (30 min.). In this case the chlorite is reduced substantially to be within the permitted level. In addition, such treatment regenerates some of the chlorine dioxide thereby increasing its residual. The odourous H2S can also be eliminated with 3 mgL–1 of ozone. Advantages and disadvantages of the above treatments are discussed.

Theoretical and Practical Approach to the Disinfection of Municipal Waste Water Using Chlorine Dioxide

1992 ◽  
Vol 25 (12) ◽  
pp. 145-154 ◽  
Author(s):  
M. Dernat ◽  
M. Pouillot
Keyword(s):  
Waste Water ◽  
Chlorine Dioxide ◽  
Waste Water Treatment ◽  
Fecal Coliforms ◽  
Treated Water ◽  
Water Characteristics ◽  
Beach Water Quality ◽  
By Products

Disinfection efficiency of urban waste water treatment depends on treated water characteristics and receiving medium. The amount of chlorine dioxide (2 to 5 mg/l) needed for a given effluent is relatively low due to its high effectiveness against many microorganisms. No typical by-products, such as hypobromites, trihalomethanes, chloramines, are obtained with chlorine dioxide. In a case study, bacterial analyses show that the treatment respects the limit of 2000 fecal coliforms per 100 ml of treated water and contributes to maintain the beach water quality of Deauville and Trouville in France.

Design process for serious activities inspired by play and games: a problem solving with a board game from disengamement and gamification processes (Preprint)

2020 ◽  
Author(s):  
Stéphane Goria ◽  
Louise Dupet ◽  
Maëva Négroni ◽  
Gabriel Sega ◽  
Philippe Arnoux ◽  
...  
Keyword(s):  
Cancer Detection ◽  
Serious Games ◽  
Diagnostic Method ◽  
Scientific Literature ◽  
Imaging Techniques ◽  
Point Of View ◽  
Board Game ◽  
Advantages And Disadvantages ◽  
Design Result

BACKGROUND most serious games and other game-based tools are designed as digital games or escape games. They are designed for learning or sometimes in the field of medicine as an aid to care. However, they can also be seen as an aid to research, in our case, to evaluate the advantages and disadvantages of imaging techniques for cancer detection. OBJECTIVE we present a case study of action research on the design of a serious board game intended to consider the advantages and weaknesses of a diagnostic method in a different ways. The goal was to better understand the principles of designing a tool using game or play. METHODS we explicitly implemented another process than gamification to develop a structure reminiscent of the game to highlight the strengths and weaknesses of different imaging techniques from the point of view of the respondents (in this case specialists not directly involved in the project). Based on this feedback and the scientific literature on this subject, we detail the main categories of games and games developed for serious use in order to understand their differences. Concerning the cancer research part to which game contributes, our method is based on questions asked to experts and practitioners of this specialty. RESULTS an expert point of view translation tool in the form of a game has been realized to apprehend a research in a different way. CONCLUSIONS we show with the help of a diagram, some possible design paths leading to this type of design result including two hidden dimensions to consider (the awareness of the game or play by the "player" and his role as a contributor or recipient).

Science Fiction and Administrative Truths: The Short Story and Novella as Administrative Cases

Public Voices ◽  
2017 ◽  
Vol 2 (3) ◽  
pp. 61
Author(s):  
Nolan J. Argyle ◽  
Lee M. Allen
Keyword(s):  
Science Fiction ◽  
Public Administration ◽  
Short Story ◽  
Interesting Case ◽  
Organizational Complexity ◽  
Professional Career ◽  
Playing Field ◽  
Advantages And Disadvantages ◽  
Hands On

Pre-service and in-service MPA students share a common desire for hands-on, real world instruction related to their professional career goals, leading to a pedagogic discounting of fiction as an appropriate tool for analyzing and "solving" problems. However, several factors weigh heavily in favor of using science fiction short stories and novellas in the MPA classroom setting. These include the need for interesting case scenarios exploring various administrative issues; leveling the playing field between the two types of students by de-emphasizing the use of "contemporary" cases; access to literature that explores the future shock of increasing organizational complexity; and the desirability of Rorschach type materials that facilitate discussion of. values and administrative truths. The discussion proceeds by tracing the development of the case study technique, its advantages and disadvantages in the classroom, addressing the utility of "fiction" as an educational resource, and showing how the science fiction literature has matured to the point where it can be applied in all of the major sub-fields of public administration. Several outstanding examples are detailed, and a thorough bibliography is provided.

‘More Product, Less Process’ (MPLP): An early printed book project

2021 ◽  
pp. 096100062110267
Author(s):  
Karen Attar
Keyword(s):  
18Th Century ◽  
The United States ◽  
Global Changes ◽  
Main Research ◽  
Advantages And Disadvantages ◽  
Main Research Interest ◽  
Printed Books ◽  
Starting Point ◽  
19Th And 20Th Century

This article addresses the challenge to make printed hidden collections known quickly without sacrificing ultimate quality. It takes as its starting point the archival mantra ‘More product, less process’ and explores its application to printed books, mindful of projects in the United States to catalogue 19th- and 20th-century printed books quickly and cheaply with the help of OCLC. A problem is lack of time or managerial inclination ever to return to ‘quick and dirty’ imports. This article is a case study concerning a collection of 18th-century English imprints, the Graveley Parish Library, at Senate House Library, University of London. Faced with the need to provide metadata as quickly as possible for digitisation purposes, Senate House Library decided, in contrast to its normal treatment of early printed books, to download records from the English Short Title Catalogue and amend them only very minimally before releasing them for public view, and to do this work from catalogue cards rather than the books themselves. The article describes the Graveley Parish collection, the project method’s rationale, and the advantages and disadvantages of sourcing the English Short Title Catalogue for metadata. It discusses the drawbacks of retrospective conversion (cataloguing from cards, not books): insufficient detail in some cases to identify the relevant book, and ignorance of the copy-specific elements of books which can constitute the main research interest. The method is compared against cataloguing similar books from photocopies of title pages, and retrospective conversion using English Short Title Catalogue is compared against retrospective conversion of early printed Continental books from cards using Library Hub Discover or OCLC. The control groups show our method’s effectiveness. The project succeeded by producing records fast that fulfilled their immediate purpose and simultaneously would obviously require revisiting. The uniform nature of the collection enabled the saving of time through global changes.

Application of failure mode and effects analysis to reduce microplastic emissions

2021 ◽  
pp. 0734242X2110031
Author(s):  
Ana Pires ◽  
Paula Sobral
Keyword(s):  
Failure Mode ◽  
Quantitative Methods ◽  
Policy Instruments ◽  
Effect Analysis ◽  
Advantages And Disadvantages ◽  
Heuristic Technique ◽  
Single Use ◽  
Regulatory Measures ◽  
Plastic Products

A complete understanding of the occurrence of microplastics and the methods to eliminate their sources is an urgent necessity to minimize the pollution caused by microplastics. The use of plastics in any form releases microplastics to the environment. Existing policy instruments are insufficient to address microplastics pollution and regulatory measures have focussed only on the microbeads and single-use plastics. Fees on the use of plastic products may possibly reduce their usage, but effective management of plastic products at their end-of-life is lacking. Therefore, in this study, the microplastic–failure mode and effect analysis (MP–FMEA) methodology, which is a semi-qualitative approach capable of identifying the causes and proposing solutions for the issue of microplastics pollution, has been proposed. The innovative feature of MP–FMEA is that it has a pre-defined failure mode, that is, the release of microplastics to air, water and soil (depending on the process) or the occurrence of microplastics in the final product. Moreover, a theoretical recycling plant case study was used to demonstrate the advantages and disadvantages of this method. The results revealed that MP–FMEA is an easy and heuristic technique to understand the failure-effect-causes and solutions for reduction of microplastics and can be applied by researchers working in different domains apart from those relating to microplastics. Future studies can include the evaluation of the use of MP–FMEA methodology along with quantitative methods for effective reduction in the release of microplastics.

scholarly journals The Computer-Assisted Web Interview Method as Used in the National Study of ICT Use in Primary Healthcare in Poland – Reflections on a Case Study

2015 ◽  
Vol 43 (1) ◽  
pp. 137-146 ◽  
Author(s):  
Paweł Sowa ◽  
Bartosz Pędziński ◽  
Michalina Krzyżak ◽  
Dominik Maślach ◽  
Sylwia Wójcik ◽  
...  
Keyword(s):  
Primary Healthcare ◽  
National Study ◽  
Computer Assisted ◽  
Web Surveys ◽  
Technical Aspects ◽  
Interview Method ◽  
Advantages And Disadvantages ◽  
Ict Use ◽  
Aforementioned Study

Abstract The development and widespread use of ICT in society are reflected by the way research is designed and conducted. The Computer Assisted Web Interview method is becoming more attractive and is a frequently used method in health sciences. The National Study of ICT Use in Primary Healthcare in Poland was conducted using this method. The aim of this paper is to present the major advantages and disadvantages of web surveys. Technical aspects of methodology and important stages of the aforementioned study, as well as key elements for its procedure, are mentioned. The authors also provide reflections based on their analysis of this national study, conducted between January and April 2014.

Analyzing the regional tax policy: The Republic of Dagestan case study

2021 ◽  
Vol 27 (6) ◽  
pp. 1312-1333
Author(s):  
Zarina G. ABAKAROVA ◽  
Patimat G. ISAEVА
Keyword(s):  
Systems Analysis ◽  
Tax Policy ◽  
Positive Impact ◽  
Economic Life ◽  
Economic Relations ◽  
Advantages And Disadvantages ◽  
Policy Objectives ◽  
The Republic ◽  
Case Study Methods

Subject. We consider the economic relations that arise in the process of formation and implementation of the regional tax policy. Objectives. The purpose is to analyze the regional tax policy considering the Republic of Dagestan as a case study. Methods. The study employs methods of statistical, economic and mathematical, and systems analysis. Results. We propose measures that may be implemented in the system of tax policy of the Republic of Dagestan and contribute to its improvement in conditions of financial instability. Nevertheless, these proposals require further attention, a deeper level of design and development of testing scheme. They may also be used to study the tax policy of the region. Conclusions. The comprehensive analysis shows that the tax policy and other approaches to the regulation of the economic life of the country have advantages and disadvantages. It is obvious that the application of these tools may have a positive impact on the economy.

Can Manage The Security And Online Reputation In Sexting And Cyberbullying?

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Sorina Mihaela Bălan
Keyword(s):  
Parental Control ◽  
The Internet ◽  
Advantages And Disadvantages ◽  
Online Reputation

One of the most wonderful inventions is the internet. Analyzing the advantages and disadvantages of this fantastic world, we believe that we must turn our attention to the sexual implications of cyberbullying. In introduction can find the specific terminology, like: cyberbullying, harassment, cyberstalking, denigration, outing and trickery and sexting. Next part present same research in the topics, same case study from specific literature. How can manage the security and online reputation? – the answers can guided the rider. Education in prevention of Sexting and cyberbullying indicate also advices for parents, made reference at parental control recommendations and ten specific messages to share with adolescents in formal or informal. In this moment we can say that is difficult to managing the security and online reputation in sexting and cyberbullying but is a major provocation.

scholarly journals Proposal of the Functional System for the Airline Companies Financial Situation Assessment

2019 ◽  
Vol 21 (1) ◽  
pp. 3-8
Author(s):  
Ondrej Stopka ◽  
Ladislav Bartuska ◽  
Jacek Caban ◽  
Larisa M. Kapustina
Keyword(s):  
Economic Performance ◽  
General Procedure ◽  
Functional System ◽  
Aviation Industry ◽  
Financial Indicators ◽  
Financial Health ◽  
Financial Situation ◽  
Advantages And Disadvantages ◽  
The Individual

This paper presents the draft methodology to be applied for evaluating the financial health of airlines. In the introductory part, specific attributes, regarding the individual types of airlines, are described. Subsequent parts of the manuscript outline advantages and disadvantages to measure airlines performance when implementing financial indicators, as well as a general procedure to evaluate the financial situation of a company operating in the aviation industry. The most important part of the paper includes the proposal of the specific functional system to evaluate the economic performance of airlines. Financial evaluation itself (evaluation of financial indicators of the enterprise‘s economic performance) is performed through a particular case study when comparing several existing airlines.

scholarly journals Social Inequality among the Female Merchants of Ethnic Malay and Chinese

Society ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 1-12
Author(s):  
Eraskaita Ginting ◽  
Yusnaini Yusnaini
Keyword(s):  
Hong Kong ◽  
Social Inequality ◽  
Social Inequalities ◽  
Literature Study ◽  
Chinese Market ◽  
Study Approach ◽  
Advantages And Disadvantages ◽  
The City ◽  
Depth Interviews

People in Jambi city assume that Pasar Hong Kong, a traditional market located in Jelutung sub-district, is “a Chinese market”, even some areas in the city of Jambi such as Jelutung, Koni, and Talang Banjar are dominated by the ethnic of Chinese. This research aims to explore how social inequality that occurs due to the advantages and disadvantages of an ethnic group so that it can affect individual attitudes that damage social capital. This research uses a case study approach with in-depth interviews and literature study as data collection techniques. The subjects of this study were ethnic Malay and Chinese female merchants in Pasar Hong Kong, Jambi city, Indonesia. This research found that social inequalities that occur among the female merchants of ethnic Malay and Chinese in Pasar Hongkong occur naturally, where both merchants and buyers have a high tolerance when interacting. Although sometimes there are differences in attitude when the merchants serve different ethnic buyers. The involvement of traditional leaders in managing social inequalities is very important due to the lack of assimilation among ethnic Malay and Chinese.

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