Semi-centralised supply and treatment systems for (fast growing) urban areas

2007 ◽  
Vol 55 (1-2) ◽  
pp. 349-356 ◽  
Author(s):  
B. Weber ◽  
P. Cornel ◽  
M. Wagner

Mega cities with rapid growth are challenged by two main problems concerning water supply and sanitation. One is water scarcity because local demand exceeds local supply. The other is that the infrastructure for water supply and the collection and treatment of wastewater cannot keep up with the rapid growth of the mega cities. The transfer of conventional centralised water and wastewater systems from industrialised countries to mega cities does not seem appropriate, because of the rapid and almost unpredictable growth in mega cities on the one hand and the regional shortage of water which requires an economical use and reuse wherever possible on the other hand. The transition from centralised to semi-centralised supply and treatment systems (SESATS) may be one method of resolution to the grave discrepancy between the rapid growth of cities and the provision of supply and treatment infrastructure. One important aspect of planning semi-centralised wastewater collection and treatment infrastructure including intra-urban water reuse is the assessment of the optimal size. Therefore, factors and indicators, which have an effect on the scale of semi-centralised sanitation systems, have to be developed. Beside the introduction in SESATS some of these factors, criteria and indicators and their effects on the system's scale will be introduced in this paper.

1996 ◽  
Vol 19 (2) ◽  
pp. 79-114 ◽  
Author(s):  
Calvin D. Smith

Despite rapid growth in the provision of alternative dispute resolution services by governments, little sociological attention has been paid to the emerging form these services take. In this paper I offer a preliminary analysis of mediations conducted by the Community Justice Program in Queensland. I focus on the interactional management of two competing constraints on the talk. On the one hand mediation services must provide an accountably standardised and recognisable process. This creates the need for formalisation of the mediation process. On the other hand, because of philosophical commitments to disputant control over the dispute and its outcome, Community Justice Program mediations must be conducted in such a way as to display this commitment to disputant control and authority in the proceedings. This creates a conflicting need for displays of informality. This paper focuses on some strategies which appear to be designed to achieve this mix of formality and informality in Community Justice Program mediations.


2014 ◽  
Vol 8 (1) ◽  
pp. 59
Author(s):  
Ahmad Amir Aziz

This article tries to analyze the revival of mystical order (<em>tarekat</em>) in urban areas. Experiences reveal that the development of mystical orders in the Muslim world is not free from criticism, either from the insiders or the outsiders. However, mystical orders still exist, and this fact is characterized by the development of different mystical groups in various cities. Political, social and economic factors influence the fluctuation of mystical orders. This article argues that in a number of countries and in Indonesia, the mystical orders have contributed significantly to the socio-religious life of Muslims. The mystical orders become stronger as they are supported by the involvement of middle class group, media publication, and internal strength embedded in the very tradition of mystical orders. The influx of middle class Muslims to the networks of tarekat brings the fresh wind of change since their engagement provides the internal dynamic of <em>tarekat</em> which encounters external influences on the one hand, and the continuing drive to develop on the other.


REGION ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 15-32
Author(s):  
Maja Grabkowska ◽  
Magdalena Szmytkowska

New-build gated condominiums at the periphery of a post-socialist city are a well-studiedphenomenon. However, in Poland, recent years have seen an expansion of residential gating into oldinner-city neighbourhoods and socialist large housing estates. The resulting fragmentation andprivatisation of public space have raised much controversy and debate on appropriation of urbancommon good. This paper presents outcomes of a research on the changing discourse of gating inGdańsk, based on a discourse analysis of newspaper articles and interviews with key urbanstakeholders. On the one hand, gating is seen as an anti-commoning practice criticised for its elitistcharacter and undesirable socio-spatial consequences. On the other, a narrative of exclusionarycommons has emerged to justify the need of gating in specific cases. Considering the varyingmotivations and types of gating in different urban areas, the authors have attempted a classification,relating gating practices to commoning strategies and their justification in localities typicallycharacterised by atomistic individualism and social disintegration.


2015 ◽  
Vol 19 (4) ◽  
pp. 26-33
Author(s):  
Andrzej Kowalczyk

Abstract Many hotels are owned by a few dozen so-called hotel chains or hotel systems. The rapid growth of big hotel companies can be regarded as proof of the entrance of hotel systems into the globalisation phase. Since 2006, companies from the People’s Republic of China (PRC) have been among the world’s top hotel systems. This year can be considered as the symbolic beginning of a new stage in the history of the largest hotel systems. This paper shows two main trends. On the one hand, the processes that could be observed in the market of the major global hotel systems from the 1990s are still discernible (for example, the position of the so-called hotel megasystems). On the other hand, new trends have come to the fore in recent years, notably the emergence of systems from the People’s Republic of China among the world’s largest hotel systems.


1980 ◽  
Vol 7 (1) ◽  
pp. 17-35 ◽  
Author(s):  
Rosita S. Chen ◽  
Sheng-Der Pan

Taylor's system of accounting was formulated in the 1880s, basically completed in the 1890s, and implemented in various manufacturing companies up until the 1920s. The rapid growth of business and the accompanying change in capital structure in this century led to an income-statement emphasized financial accounting system on the one hand, and a decision-oriented managerial accounting system on the other. In either system, some influence of Taylor's work is still discernable.


Water Policy ◽  
2008 ◽  
Vol 10 (2) ◽  
pp. 119-129 ◽  
Author(s):  
Duncan Mara ◽  
Graham Alabaster

To achieve the Millennium Development Goals for urban water supply and sanitation ∼300,000 and ∼400,000 people will have to be provided with an adequate water supply and adequate sanitation, respectively, every day during 2001–2015. The provision of urban water supply and sanitation services for these numbers of people necessitates action not only on an unprecedented scale, but also in a radically new way as “more of the same” is unlikely to achieve these goals. A “new paradigm” is proposed for low-cost urban water supply and sanitation, as follows: water supply and sanitation provision in urban areas and large villages should be to groups of households, not to individual households. Groups of households would form (even be required to form, or pay more if they do not) water and sanitation cooperatives. There would be standpipe and yard-tap cooperatives served by community-managed sanitation blocks, on-site sanitation systems or condominial sewerage, depending on space availability and costs and, for non-poor households, in-house multiple-tap cooperatives served by condominial sewerage or, in low-density areas, by septic tanks with on-site effluent disposal. Very poor households (those unable to afford to form standpipe cooperatives) would be served by community-managed standpipes and sanitation blocks.


2015 ◽  
Vol 5 (3) ◽  
pp. 407-418 ◽  
Author(s):  
Rong Chen ◽  
Xiaochang Wang ◽  
Yanzheng Liu

A water reuse system was formulated for the Xi'an International Metropolitan Urban Planning Project, with the aim of mitigating water stress in the central city of Xi'an, China in 2020. The main reuse purposes of the reclaimed water were agriculture, industry, municipal, ecological, and indoor uses. A wastewater reuse potential capacity of 427.2 × 106 m3/yr was deduced by analyzing the water demand for the different reuse purposes. This reuse capacity makes significant contribution to increasing the total urban water supply capacity and mitigating the water shortage problems imposed by the process of urbanization. A supply scheme for the reclaimed water was configured, which comprised the reclaimed water sources, water supply service areas, and the main reuse purposes. As a result, a wastewater treatment plants (WWTPs)-centered reclaimed water supply system was formed, and the main reuse purposes of the 15 WWTPs and their service districts were defined. Through an economic analysis, the feasibility and benefits of the water reuse system were ascertained. Overall, this study provided the theoretical basis and implementation strategies for a system configuration of water reuse in Xi'an City and also contributed to solving the water-deficiency problems associated with the rapidly developing urban areas in China.


2008 ◽  
Vol 58 (3) ◽  
pp. 563-570 ◽  
Author(s):  
R. Törnqvist ◽  
A. Norström ◽  
E. Kärrman ◽  
P.-A. Malmqvist

There are billions of people around the world that lack access to safe water supply and basic sanitation, a situation which puts the affected in severe health conditions as well as economical and social despair. Many of those lacking adequate water supply and sanitation systems can be found at the fringe of the cities in so called peri-urban areas, especially in the developing world. Planning in these areas is highly complex due to challenging environmental and physical conditions, high population density and unclear institutional boundaries. This article presents a framework aiming to support the planning process for sustainable water and sanitation systems in peri-urban areas. The suggested framework is based on different available planning approaches from a review of literature and websites of organisations and companies. It consists of a recommendation of important steps in the planning process as well as supporting tools. Further, it incorporates a set of sustainability criteria important for the peri-urban context and allows for the development of site specific systems. The framework has the aim to be flexible for different planning situations, and for suiting planners with different perspectives and amount of resources.


2018 ◽  
Author(s):  
Harry Dhika ◽  
A. Daengs GS ◽  
Erlin Windia Ambarsari

In urban areas, water supply using pipeline system from the company of water supply; the name is PDAM (Perusahaan Daerah Air Minum) which provides services to the public to ensure clean water quality as health requirements. The one of a problem in PDAM is the high rate of water loss caused by pipeline leakage. Pipeline leakage is an important issue as resulting in financial losses, for both PDAM (water provider) and customers. Based on a previous study of, the area that allows the greatest pipe leakage such as Geledug-Leuwiliang and Cibungbulang-Ciampea, the reason is a complex volcanic rocks formation. Then this study has to continue by forecasting water loss per month up to 2017 to look at the frequency of water loss for immediate repair in handling pipeline leakage. Predicting to be done using ANFIS method and then it will test again with Backpropagation to check the error rate so that the data will be more accurate; where is the area in this study is Geledug-Leuwiliang (greatest pipeline leakage). The result is most likely due to visible leaks such as crack pipe caused by complex volcanic rocks formation (31.8% with error rate 1%). Therefore the effort made is to replace the leaky pipes which then do further study on the material used by the tube that is following the pipe area that planted.


2021 ◽  
Vol 8 (2) ◽  
pp. 205395172110473
Author(s):  
Rasmus Birk ◽  
Anna Lavis ◽  
Federica Lucivero ◽  
Gabrielle Samuel

Digital phenotyping for mental health is an emerging trend which uses digital data, derived from mobile applications, wearable technologies and digital sensors, to measure, track and predict the mental health of an individual. Digital phenotyping for mental health is a growing, but as yet underexamined, field. As we will show, the rapid growth of digital phenotyping for mental health raises crucial questions about the values that underpin and are reinforced by this technology, as well as regarding to whom it may become valuable. In this commentary, we explore these questions by focusing on the construction of value across two interrelated domains: user experience and epistemologies on the one hand, and issues of data and ownership on the other. In doing so, we demonstrate the need for a deeper ethical and epistemological engagement with the value assumptions that underpin the promise of digital phenotyping for mental health.


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