Cost-efficiency and performance of individual and small-scale treatment plants

2000 ◽  
Vol 41 (1) ◽  
pp. 21-28 ◽  
Author(s):  
D. Geenens ◽  
C. Thoeye
Keyword(s):  
Wastewater Treatment ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Small Scale ◽  
Individual Housing ◽  
Variable Nature ◽  
Weak Points ◽  
And Performance ◽  
The Moment

The problem of diffuse pollution by individual housing can be tackled by installation of individual wastewater treatment systems. At the moment there are initiatives towards standardisation and certification of these systems to ensure efficient installations. Treatment results of recently installed individual plants prove to be very good towards BOD, COD and SS removal. Factors such as frequency of maintenance, control and mechanical breakdown may however affect these promising results. Investment and operation costs per PE are discussed and compared with a more centralised approach, emphasising the highly variable nature of these costs for individual wastewater treatment. Additional long-term experience is needed to evaluate the potential weak points and achieve improved cost-benefit analysis.

scholarly journals Long-term investigation of phosphorus removal by iron electrocoagulation in small-scale wastewater treatment plants

2018 ◽  
Vol 78 (6) ◽  
pp. 1304-1311 ◽  
Author(s):  
I. Mishima ◽  
M. Hama ◽  
Y. Tabata ◽  
J. Nakajima
Keyword(s):  
Wastewater Treatment ◽  
Phosphorus Removal ◽  
Wastewater Treatment Plants ◽  
Phosphorus Release ◽  
Small Scale ◽  
Operational Conditions ◽  
Long Time ◽  
Negative Effect ◽  
Iron Electrolysis

Abstract Small-scale wastewater treatment plants (SWTPs), called Johkasou, are widely used as decentralized and individual wastewater treatment systems in sparsely populated areas in Japan. Even in SWTPs, nutrients should be removed to control eutrophication. An iron electrolysis method is effective to remove phosphorus chemically in SWTPs. However, it is necessary to determine the precise conditions under which phosphorus can be effectively and stably removed in full scale SWTPs for a long period. Therefore, long-term phosphorus removal from SWTPs was investigated and optimum operational conditions for phosphorus removal by iron electrolysis were analyzed in this study. Efficient phosphorus removal can be achieved for a long time by adjusting the amount of iron against the actual population equivalent. The change of the recirculation ratio had no negative effect on overall phosphorus removal. Phosphorus release to the bulk phase was prevented by the accumulated iron, which was supplied by iron electrolysis, resulting in stable phosphorus removal. The effect of environmental load reduction due to phosphorus removal by iron electrolysis was greater than the cost of power consumption for iron electrolysis.

scholarly journals MEASURING THE EFFICIENCY OF SOCIAL ENTREPRENEURSHIP

2020 ◽  
pp. 193-198
Author(s):  
A. N. Timokhovich ◽  
O. I. Nikuradze
Keyword(s):  
Social Entrepreneurship ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Social Value ◽  
Social Entrepreneurs ◽  
Long Term Effect ◽  
The Social ◽  
Common Problems ◽  
Definition Of

The problems of measuring the efficiency of social entrepreneurship have been affected. The aim of the study is to identify the most relevant methods for measuring social value and evaluating the effects that arise as a result of the activities of social organizations. Various interpretations of the definition of the term “social entrepreneurship” have been given in the article. The main elements of the process of social entrepreneurship, features of the goal setting and risks of activities in the study area have been emphasized. The stages of planning activities in the field of social entrepreneurship have been described. The most common problems of measurements and evaluation of social effects that social entrepreneurs have to deal with in the process of carrying out activities related to the implementation of social projects: difficulty in achieving a quantitative evaluation, difficulty in predicting the long-term effect of activities, limitations on costs, time resources, indicators of accuracy and interpretation of results have been revealed. Problems in forecasting the effectiveness of social projects have been identified. The main methods that can be used by social entrepreneurs and organizations for measuring the social value and assessing impact of ongoing activities (method of cost-benefit analysis, method of social accounting, method of social return on investment, method of analysis of the main resources of efficiency) have been analysed. Recommendations for social entrepreneurs have been formulated.

scholarly journals Alternatives to groundwater abstraction as a measure to stop land subsidence: a case study of Semarang, Indonesia

2019 ◽  
Vol 125 ◽  
pp. 01003 ◽  
Author(s):  
Wesley Beek ◽  
Bart Letitre ◽  
H. Hadiyanto ◽  
S. Sudarno
Keyword(s):  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Drinking Water Treatment ◽  
Decision Makers ◽  
Groundwater Abstraction ◽  
Short Term ◽  
Treatment Services

The Water as Leverage project aims to lay a blueprint for urban coastal areas around the world that are facing a variety of water-related issues. The blueprint is based upon three real case studies in Bangladesh, India and Indonesia. The case of Indonesia focuses on Semarang, a city that faces issues like flooding, increased water demand, and a lack of wastewater treatment. In this report I summarise the different techniques available to tackling these issues. Along with this I provide a cost-benefit analysis to support decision makers. For a short term it is recommended to produce industrial water from (polluted) surface water as a means to offer an alternative to groundwater abstraction. On a long term it is recommended to install additional wastewater and drinking water treatment services to facilitate better hygiene and a higher quality of life.

scholarly journals The Cost-Benefit Analysis of the Electricity Production from Small Scale Renewable Energy Sources in the Conditions of Romania

2019 ◽  
Vol 32 ◽  
pp. 385-389 ◽  
Author(s):  
Pavel Atănăsoae ◽  
Radu Dumitru Pentiuc ◽  
Dan Laurențiu Milici ◽  
Elena Daniela Olariu ◽  
Mihaela Poienar
Keyword(s):  
Renewable Energy ◽  
Cost Benefit Analysis ◽  
Renewable Energy Sources ◽  
Cost Benefit ◽  
Electricity Production ◽  
Energy Sources ◽  
Small Scale ◽  
Benefit Analysis ◽  
The Cost

scholarly journals Towards systematic planning of small-scale hydrological intervention-based research

2016 ◽  
Vol 20 (10) ◽  
pp. 4093-4115 ◽  
Author(s):  
Kharis Erasta Reza Pramana ◽  
Maurits Willem Ertsen
Keyword(s):  
Decision Making ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Human Agency ◽  
Small Scale ◽  
Benefit Analysis ◽  
Water Development ◽  
Systematic Planning ◽  
Development Initiatives ◽  
Hydrological Intervention

Abstract. Many small-scale water development initiatives are accompanied by hydrological research to study either the form of the intervention or its impacts. Humans influence both the development of intervention and research, and thus one needs to take human agency into account. This paper focuses on the effects of human actions in the development of the intervention and its associated hydrological research, as hydrological research is often designed without adequate consideration of how to account for human agency and that these effects have not yet been discussed explicitly in a systematic way. In this paper, we propose a systematic planning for hydrological research, based on evaluating three hydrological research efforts targeting small-scale water development initiatives in Vietnam, Kenya, and Indonesia. The main purpose of the three cases was to understand the functioning of interventions in their hydrological contexts. Aiming for better decision-making on hydrological research in small-scale water intervention initiatives, we propose two analysis steps, including (1) consideration of possible surprises and possible actions and (2) cost–benefit analysis. By performing the two analyses continuously throughout small-scale hydrological intervention-based initiatives, effective hydrological research can be achieved.

A cost-benefit analysis of peer coaching for overhead lift use in the long-term care sector in Canada

2015 ◽  
Vol 73 (5) ◽  
pp. 308-314 ◽  
Author(s):  
Emile Tompa ◽  
Roman Dolinschi ◽  
Hasanat Alamgir ◽  
Anna Sarnocinska-Hart ◽  
Jaime Guzman
Keyword(s):  
Peer Coaching ◽  
Long Term Care ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Benefit Analysis ◽  
Term Care

Part IX Costs, Funding, and Ideas for Optimization, 28 Optimizing the use of Mediation in International Arbitration: A Cost–Benefit Analysis of ‘Two Hat’ Versus ‘Two People’ Models

2016 ◽  
Author(s):  
Waincymer Jeffrey
Keyword(s):  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Dual Role ◽  
Benefit Analysis ◽  
Dual Roles ◽  
Party Autonomy ◽  
Key Points ◽  
Fairness And Efficiency ◽  
Full Cooperation

This chapter considers the question of whether an arbitrator may also adopt a mediation function or whether the dual roles are antithetical. It tests that hypothesis by engaging in a cost-benefit analysis of differing scenarios when mediation is utilized in an arbitral context. The prime comparison is between parallel mediation with a separate neutral and the alternative of a dual-role neutral. The three key points are: there should be much more mediation occurring at the international level, regarding both potential and actual arbitral disputes; a commercially minded arbitrator concerned for the parties’ good faith should encourage mediation where appropriate, in particular, when an adjudicated outcome will not be in the interests of either, usually because the dispute is a small part of a long-term relationship that can risk that relationship no matter who wins; and, while informed party autonomy should always support a dual-role neutral, in most factual permutations, informed parties could be expected to prefer parallel mediation provided there is full cooperation between mediator and arbitrator. The chapter argues that the relative benefits of the use of dual-role neutrals would be greatly outweighed by the costs in fairness and efficiency, and the inevitable need for a sub-optimal design of either or both dispute processes. The benefits would also be separately outweighed by the risks of significant disruption to any ensuing arbitration if a dual-role neutral fails to achieve a settlement.

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