scholarly journals APPLICATION OF TRADABLE DISCHARGE CREDITS TO WASTEWARTER MANAGEMENT: A FEASIBILITY STUDY

Ekonomika ◽  
2010 ◽  
Vol 89 (1) ◽  
pp. 80-90
Author(s):  
Linas Čekanavičius
Keyword(s):  
Field Study ◽  
Municipal Wastewater ◽  
Social Economic ◽  
Effective Means ◽  
Cost Effective ◽  
Economic Benefits ◽  
Wastewater Management ◽  
Wastewater Discharge ◽  
Discharge Management ◽  
The One

The paper presents results of a field study on the feasibility of applying tradable discharge credits approach to wastewater management. The hypothesis that formed the basis of the present study is that conversion of the existing municipal wastewater discharge management system in Lithuania into the one that uses tradable discharge credits can bring both private and overall (social) economic benefits in the form of increased flexibility of the sewerage subscribers to select the most cost-effective means of compliance with the discharge limits. Research has been conducted in order to determine whether the tradable discharge credits can be employed for municipal wastewater management and, if so, how it can be done. The presented framework of wastewater management, based on tradable discharge credits, can serve as a blueprint for similar applications in other countries or regions, as well as a basis for policy steps.

Wastewater Management in Shanghai

2014 ◽  
Vol 989-994 ◽  
pp. 5575-5579
Author(s):  
Jian Cheng Kang ◽  
Hai Lin ◽  
Jiong Zhu ◽  
Guo Dong Yan
Keyword(s):  
Industrial Wastewater ◽  
Social Economic ◽  
Wastewater Management ◽  
Wastewater Discharge ◽  
Urban Wastewater ◽  
The Past ◽  
The Social ◽  
Social Economic Development ◽  
Development And Management ◽  
Permanent Residents

In 1981~2012, the general urban wastewater in Shanghai was between 1.775~2.420 billion tons. Among the urban wastewater, the industrial wastewater emissions before 1988 was more than 1.4 billion tons, then, it was declining to about 649 million tons at 2002, a low value in the past 30 years, less than 50% of the 1980s. The percentage of industrial wastewater in the total urban wastewater discharge is falling from 76.9% in 1981 to under 30% in recent years. The living wastewater emissions increased from 424 million tons in 1981 to 1.697 billion tons in 2012. There is a relationship between the living wastewater increasing and the increase of the permanent residents in Shanghai. At the same time, the living wastewater emissions per capita per day were significantly increased from 100 kg (liter) around 1980s to around 190 kg (liter) in recent years. From 1995, the treatment and management of urban wastewater was continuing to intensify in Shanghai. The ratio of wastewater treating has increasing from 6.35% in 1995 to 85.62% of the total urban wastewater in 2012. Comparing the social-economic development and management of wastewater discharge in Shanghai, it can be seen, the wastewater emissions increasing amplitude was far less than the sizes of population growth and economic growth in the past 30 years

scholarly journals Management and Valorization of Urban Solid Waste: Landfills of the Batna City Case

2020 ◽  
Vol 15 (5) ◽  
pp. 659-665
Author(s):  
Haddad Louiza ◽  
Aouachria Zeroual
Keyword(s):  
Field Study ◽  
Solid Waste ◽  
Environmental Impacts ◽  
Social Economic ◽  
State Of The Art ◽  
The Other ◽  
Urban Solid Waste ◽  
The One ◽  
Solid Waste Landfills ◽  
A Current

The treatment of urban solid waste represents, on the one hand, a current problematic drawing the intention of the authorities on their management and recovery through their recovery and recycling, and on the other hand, their gravity that they present on health and the environment. The purpose of this study is to provide solutions to the main questions regarding quantity, management principles, on which depend reliable management, landfilling techniques and their social, economic and environmental impacts. The methodology followed in this study is summarized by the following steps: review of the state of the art, field study and triage. The Batna landfill can, in its most unfavorable state, recycle 760,000 tons per year (between ores, paper, glass and plastic). Actually, recovery of recycled products accounted for only 23.89% for 2015.

The Future's Live, the Future's Digital

LOGOS ◽  
2012 ◽  
Vol 23 (2) ◽  
pp. 7-13
Author(s):  
Alastair Horne
Keyword(s):  
Business Models ◽  
Effective Means ◽  
Music Industry ◽  
Cost Effective ◽  
New Business ◽  
The One ◽  
Book Prices ◽  
New Business Models

AbstractThis paper explores how publishers might mitigate a fall in revenues caused by the rise in ebook sales and the associated decline in book prices. By ending their historical reliance on selling single formats to undifferentiated classes of consumer (the 'one-size-fits-all' model), and instead producing formats tailored to specific types of customer, at different price points, might publishers maintain revenues? Lessons drawn from the experiences of the music industry suggest that live events such as literary festivals and author tours might have a key part to play in new business models; they might also offer a cost-effective means of generating enhanced content to add value to premium products.

scholarly journals Municipal wastewater can result in a dramatic decline in freshwater fishes: a lesson from a developing country

2018 ◽  
pp. 37 ◽  
Author(s):  
Shams M. Galib ◽  
A.B.M. Mohsin ◽  
Md. Taskin Parvez ◽  
Martyn C. Lucas ◽  
Nipa Chaki ◽  
...  
Keyword(s):  
Species Richness ◽  
Municipal Wastewater ◽  
Primary Treatment ◽  
Fish Abundance ◽  
Wastewater Management ◽  
Wastewater Discharge ◽  
Untreated Wastewater ◽  
Dramatic Decline ◽  
Downstream Reach ◽  
Treatment Facilities

Impacts of ineffective wastewater management on the biodiversity of receiving waters in developing countries are poorly documented. Using a before-after-control-impact methodology, we measured the effects of untreated wastewater release on the fish community in the Barnoi River, Bangladesh. In 2006, prior to untreated wastewater discharge, fish abundance, species richness and water quality were similar across sampling sites. In 2016, after 8 years of wastewater release to the downstream reach, fish abundance and species richness were reduced by >47% and >35% respectively at downstream sites compared to unaffected upstream sites and >51% and >41% lower respectively compared to the pre-wastewater discharge period. The wastewater impact was particularly severe during months of low discharge (October–December). Water transparency, dissolved oxygen and pH were lower (P < 0.001) at impacted downstream sites compared to upstream sites. Nineteen species (41.3% of all species we recorded) are threatened in Bangladesh and the abundance of these species, except one, decreased significantly (P < 0.05) at the impacted sites. We recommend improved wastewater management by applying primary treatment facilities and incorporating reedbed filtration as a mean of biological treatment, into the canals carrying wastewaters. The success of such measures should be tested with fish species that were most responsive to wastewater, using the indicator species concept.

Parallel Computing for Tire Simulations

2011 ◽  
Vol 39 (3) ◽  
pp. 193-209 ◽  
Author(s):  
H. Surendranath ◽  
M. Dunbar
Keyword(s):  
High Performance ◽  
Effective Means ◽  
Cost Effective ◽  
Turnaround Time ◽  
Careful Consideration ◽  
Rolling Contact ◽  
Element Analysis ◽  
Parallel Solvers ◽  
Design Changes ◽  
Highly Nonlinear

Abstract Over the last few decades, finite element analysis has become an integral part of the overall tire design process. Engineers need to perform a number of different simulations to evaluate new designs and study the effect of proposed design changes. However, tires pose formidable simulation challenges due to the presence of highly nonlinear rubber compounds, embedded reinforcements, complex tread geometries, rolling contact, and large deformations. Accurate simulation requires careful consideration of these factors, resulting in the extensive turnaround time, often times prolonging the design cycle. Therefore, it is extremely critical to explore means to reduce the turnaround time while producing reliable results. Compute clusters have recently become a cost effective means to perform high performance computing (HPC). Distributed memory parallel solvers designed to take advantage of compute clusters have become increasingly popular. In this paper, we examine the use of HPC for various tire simulations and demonstrate how it can significantly reduce simulation turnaround time. Abaqus/Standard is used for routine tire simulations like footprint and steady state rolling. Abaqus/Explicit is used for transient rolling and hydroplaning simulations. The run times and scaling data corresponding to models of various sizes and complexity are presented.

Exploring the Benefits of Early Contractor Involvement (ECI) and the Mechanism for Automated 5D BIM Quantification Process in Offsite Modular Construction

2016 ◽  
Author(s):  
Tochukwu Moses ◽  
David Heesom ◽  
David Oloke ◽  
Martin Crouch
Keyword(s):  
Effective Means ◽  
Cost Effective ◽  
Modular Construction ◽  
Automated Quantification ◽  
Building Information ◽  
Project Risks ◽  
Value Add ◽  
The Uk ◽  
The Impact ◽  
Level 2

The UK Construction Industry through its Government Construction Strategy has recently been mandated to implement Level 2 Building Information Modelling (BIM) on public sector projects. This move, along with other initiatives is key to driving a requirement for 25% cost reduction (establishing the most cost-effective means) on. Other key deliverables within the strategy include reduction in overall project time, early contractor involvement, improved sustainability and enhanced product quality. Collaboration and integrated project delivery is central to the level 2 implementation strategy yet the key protocols or standards relative to cost within BIM processes is not well defined. As offsite construction becomes more prolific within the UK construction sector, this construction approach coupled with BIM, particularly 5D automated quantification process, and early contractor involvement provides significant opportunities for the sector to meet government targets. Early contractor involvement is supported by both the industry and the successive Governments as a credible means to avoid and manage project risks, encourage innovation and value add, making cost and project time predictable, and improving outcomes. The contractor is seen as an expert in construction and could be counter intuitive to exclude such valuable expertise from the pre-construction phase especially with the BIM intent of äóÖbuild it twiceäó», once virtually and once physically. In particular when offsite construction is used, the contractoräó»s construction expertise should be leveraged for the virtual build in BIM-designed projects to ensure a fully streamlined process. Building in a layer of automated costing through 5D BIM will bring about a more robust method of quantification and can help to deliver the 25% reduction in overall cost of a project. Using a literature review and a case study, this paper will look into the benefits of Early Contractor Involvement (ECI) and the impact of 5D BIM on the offsite construction process.

African Sustainability Advocacy Against Extractivism

2015 ◽  
Vol 3 (7) ◽  
Author(s):  
Patrick Bond
Keyword(s):  
Social Reproduction ◽  
Fossil Fuels ◽  
Social Economic ◽  
Social Activism ◽  
Ecological Factors ◽  
Energy Economics ◽  
Extractive Industries ◽  
The One ◽  
Political Economic ◽  
Critical Challenge

<p class="p1"><span class="s2"><strong>Abstract </strong></span>| The challenge of interdisciplinary intellectual and strategic work in the extractive industries is particularly acute at the interface of research and social activism. Numerous social movements which are dedicated to sustainability fail to ‘connect the dots’ between their campaigns and broader political-economic and political-ecological visions<span class="s3"><strong>. </strong></span>This is becoming a critical challenge in Africa, where the extreme damage done by mining and fossil fuels has generated impressive resistance<span class="s3"><strong>.</strong></span>However, the one obvious place to link these critiques from African activists was the Alternative Mining Indaba in Cape Town in February 2015, and a survey of narratives at that event leads to pessimism about interdisciplinary politics. The potential for much greater impact and deeper critiques of unsustainable extractivism lies in greater attention to combining social reproduction and production (as do eco-feminists), and to tackling social, economic, political and ecological factors with a more explicit structuralist critique and practical toolkit<span class="s3"><strong>. </strong></span>Areas such as energy, economics and climate are ripe for linkages<span class="s3"><strong>. </strong></span>One reason for optimism is a climate justice declaration made by leading civil society activists in Maputo in April 2015.<strong></strong></p>

The First Half of the Twentieth Century

2018 ◽  
Author(s):  
Alexander Gillespie
Keyword(s):  
Habitat Management ◽  
Social Economic ◽  
Chemical Pollution ◽  
Freshwater Conservation ◽  
The Great Depression ◽  
Negative Results ◽  
The Social ◽  
The World ◽  
The One ◽  
The Welfare State

The years between 1900 and 1945 were very difficult for humanity. In this period, not only were there two world wars to survive but also some of the worst parts of the social, economic, and environmental challenges of sustainable development all began to make themselves felt. The one area in which progress was made was in the social context, in which the rights of workers and the welfare state expanded. The idea of ‘development’, especially for the developing world, also evolved in this period. In the economic arena, the world went up, and then crashed in the Great Depression, producing negative results that were unprecedented. In environmental terms, positive templates were created for some habitat management, some wildlife law, and parts of freshwater conservation. Where there was not so much success was with regard to air and chemical pollution.

scholarly journals Microgrid as a Cost-Effective Alternative to Rural Network Underground Cabling for Adequate Reliability

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1978 ◽  
Author(s):  
Sanna Uski ◽  
Erkka Rinne ◽  
Janne Sarsama
Keyword(s):  
Case Studies ◽  
Power Supply ◽  
Dairy Farm ◽  
Cost Effective ◽  
Distribution Networks ◽  
Comparison Method ◽  
Economic Benefits ◽  
Economic Feasibility ◽  
Cost Calculation ◽  
Islanded Operation

Microgrids can be used for securing the supply of power during network outages. Underground cabling of distribution networks is another effective but conventional and expensive alternative to enhance the reliability of the power supply. This paper first presents an analysis method for the determination of microgrid power supply adequacy during islanded operation and, second, presents a comparison method for the overall cost calculation of microgrids versus underground cabling. The microgrid power adequacy during a rather long network outage is required in order to indicate high level of reliability of the supply. The overall cost calculation considers the economic benefits and costs incurred, combined for both the distribution network company and the consumer. Whereas the microgrid setup determines the islanded-operation power adequacy and thus the reliability of the supply, the economic feasibility results from the normal operations and services. The methods are illustrated by two typical, and even critical, case studies in rural distribution networks: an electric-heated detached house and a dairy farm. These case studies show that even in the case of a single consumer, a microgrid option could be more economical than network renovation by underground cabling of a branch in order to increase the reliability.

scholarly journals Aliphatic extractive effects on acetic acid catalysis of typical agricultural residues to xylo-oligosaccharide and enzymatic hydrolyzability of cellulose

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Jianming Guo ◽  
Kaixuan Huang ◽  
Rou Cao ◽  
Junhua Zhang ◽  
Yong Xu
Keyword(s):  
Acetic Acid ◽  
Acid Catalysis ◽  
Cost Effective ◽  
Economic Benefits ◽  
Ethanol Extraction ◽  
Minimal Impact ◽  
Aliphatic Compounds ◽  
Organic Solvent Extraction ◽  
Promising Application ◽  
Poplar Sawdust

Abstract Background Xylo-oligosaccharide is the spotlight of functional sugar that improves the economic benefits of lignocellulose biorefinery. Acetic acid acidolysis technology provides a promising application for xylo-oligosaccharide commercial production, but it is restricted by the aliphatic (wax-like) compounds, which cover the outer and inner surfaces of plants. Results We removed aliphatic compounds by extraction with two organic solvents. The benzene–ethanol extraction increased the yield of acidolyzed xylo-oligosaccharides of corncob, sugarcane bagasse, wheat straw, and poplar sawdust by 14.79, 21.05, 16.68, and 7.26% while ethanol extraction increased it by 11.88, 17.43, 1.26, and 13.64%, respectively. Conclusion The single ethanol extraction was safer, more environmentally friendly, and more cost-effective than benzene–ethanol solvent. In short, organic solvent extraction provided a promising auxiliary method for the selective acidolysis of herbaceous xylan to xylo-oligosaccharides, while it had minimal impact on woody poplar.

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