A conceptual model for decentralized municipal wastewater management

2018 ◽  
Vol 13 (1) ◽  
pp. 134-142 ◽  
Author(s):  
Diana Bernal
Keyword(s):  
Conceptual Model ◽  
Urban Areas ◽  
Municipal Wastewater ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Wastewater Management ◽  
Benefit Analysis ◽  
Consultation Process ◽  
Treatment Facilities ◽  
Hierarchy Process

Abstract This paper proposes a conceptual model for selecting the centralization level for wastewater management in urban areas, which is associated with main sewage collectors and wastewater treatment facilities. The model is supported in the Analytical Hierarchy Process (AHP) and Cost-Benefit Analysis. Additionally, the model is based on the results of variables and indicators identified previously through an expert consultation process and prioritized by Ranking and Rating Multi-criteria Analysis. Three municipalities of Colombia were used as case studies for model validation purposes. As a result, decentralized plans can be a viable option when their associated benefits are quantified.

Skenario Pengembangan Fasilitas Sistem Pengolahan Sampah Dengan Pendekatan Cost Benefit Analysis Di Kelurahan Kedamaian Kota Bandar Lampung

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Arlina Phelia ◽  
Ria Oktaviani Sinia
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Waste Treatment ◽  
Solid Waste Management ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Waste Reduction ◽  
Benefit Analysis ◽  
Processing Facility ◽  
Treatment Facilities

Bandar Lampung City is part of the major city of Lampung province. The problem that arises in Bandar Lampung City is solid waste management. The amount of solid waste in Bandar Lampung City reaches 1000 tons/day. One of the district  of Bandar Lampung named Kedamaian district still uses the old method (collecting-transport-throw) in solid waste management, which  causes the load of waste to accumulate in the landfill. The constraints encountered  this time are the absence of sorting locations  and limited land. Kedamaian district needs to develop waste  treatment facilities, an approach based on  Cost Benefit Analysis (CBA). The results show  from the analysis that BCR in the scenario A <1 is 0.85 with NPV - Rp. 72.968.828. the  activity in the existing conditions can still be carried out, but the waste reduction has not been maximized to the TPS (Container). Scenario B, NPV is Rp. 95.319.338 and BCR is 1.13, which value of BCR is >1. This indicates that a waste processing facility  in the Kedamaian District is suitable to  operate  with TPS-3R. The results of scenario B are  obtained by increasing the effectiveness of processing facilities to 100% by  2025. In 2025, with the implementation of the TPS-3R obtained, BCR is 1.20 with NPV is Rp. 218.447.621.

scholarly journals Water supply project feasibilities in fringe areas of Kolkata, India

2011 ◽  
Vol 4 (1) ◽  
pp. 9-23
Author(s):  
K. Dutta Roy ◽  
B. Thakur ◽  
T. S. Konar ◽  
S. N. Chakrabarty
Keyword(s):  
Water Quality ◽  
Willingness To Pay ◽  
Water Supply ◽  
Urban Areas ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Relevant Information ◽  
Benefit Analysis ◽  
Standard Cost ◽  
The Impact

Abstract. Water supply management to the peri-urban areas of the developing world is a complex task due to migration, infrastructure and paucity of fund. A cost-benefit methodology particularly suitable for the peri-urban areas has been developed for the city of Kolkata, India. The costs are estimated based on a neural network estimate. The water quality of the area is estimated from samples and a water quality index has been prepared. A questionnaire survey in the area has been conducted for relevant information like income, awareness and willingness to pay for safe drinking water. A factor analysis has been conducted for distinguishing the important factors of the survey and subsequent multiple regressions have been conducted for finding the relationships for the willingness to pay. A system dynamics model has been conducted to estimate the trend of increase of willingness to pay with the urbanizations in the peri-urban areas. A cost benefit analysis with the impact of time value of money has been executed. The risk and uncertainty of the project is investigated by Monte Carlos simulation and tornado diagrams. It has been found that the projects that are normally rejected in standard cost benefit analysis would be accepted if the impacts of urbanizations in the peri-urban areas are considered.

scholarly journals Monetary and Non-Monetary Indicators of Cost-Benefit Analysis in Industrialised Building System Project: An Initial Conceptual Model

2019 ◽  
Vol 266 ◽  
pp. 03003
Author(s):  
Siti Nur Atikah Abd Rashid ◽  
Natasha Khalil ◽  
Haryati Mohd Isa
Keyword(s):  
Conceptual Model ◽  
Construction Projects ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Sustainable Construction ◽  
Benefit Analysis ◽  
Use Of Resources ◽  
Waste Minimisation ◽  
Building System ◽  
System Project

Industrialised Building System (IBS) is known as a construction system that consists of a combination of components manufactured either on-site or off-site then positioned and assembled into structures. Among the benefits of IBS construction includes labour cost reduction, support desirable environment, maximize efficient use of resources and waste minimisation towards sustainable construction. However, Malaysian construction industry still has a low take-up rate on IBS construction. Hence, to promote the project’s viability via IBS, ideally, the benefits of IBS are more reliable to be presented in tangible (monetary) value and intangible (non-monetary) basis rather than descriptive benefits. Therefore, Cost-Benefit Analysis (CBA) can be used in order to identify the soft issue or non-direct cost and elicits more transparency in IBS projects. This paper presents the conceptual review of the fundamental theory of CBA on the measurement of cost and benefits that can be converted as a weighing impact for an IBS project. An initial conceptual model known as CBA-IBS model is proposed as an approach that a decision maker can use to find the balance between the amount of effort invested in the initial cost of IBS construction and the realised revenues This study concluded that CBA is able to highlight the viability of IBS for construction in more comprehensive criteria of monetary and non-monetary benefits. This paper is a review of previous studies on monetary and non-monetary indicators of CBA that suit with IBS project. The study is supported by existing literature, primarily in the most recent research, which supports the indicators of CBA. From the literature reviews, sets of monetary and non-monetary indicators of CBA that related to IBS is obtained. The result of this study will provide novel ideas to optimize sustainable construction and prolong sustainability in design, financial, buildability, operation, life-cycle and environmental aspects. CBA-IBS model will be introduced as a theoretical basis for decision-makers in adopting IBS for their construction projects.

scholarly journals Water supply project feasibilities in fringe areas of Kolkata, India

2010 ◽  
Vol 3 (2) ◽  
pp. 199-249
Author(s):  
K. Dutta Roy ◽  
B. Thakur ◽  
T. S. Konar ◽  
S. N. Chakrabarty
Keyword(s):  
Water Quality ◽  
Willingness To Pay ◽  
Water Supply ◽  
Urban Areas ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Relevant Information ◽  
Benefit Analysis ◽  
Standard Cost ◽  
The Impact

Abstract. Water supply management to the peri-urban areas of the developing world is a complex task due to migration, infrastructure, paucity of fund etc. A cost-benefit methodology particularly suitable for the peri-urban areas has been developed for the city of Kolkata, India. The costs are estimated based on a neural network estimate. The water quality of the area is estimated from samples and a water quality index has been prepared. A questionnaire survey in the area has been conducted for relevant information like income, awareness and willingness to pay for safe drinking water. A factor analysis has been conducted for distinguishing the important factors of the survey and subsequent multiple regressions have been conducted for finding the relationships for the willingness to pay. A system dynamics model has been conducted to estimate the trend of increase of willingness to pay with the urbanizations in the peri-urban areas. A cost benefit analysis with the impact of time value of money has been executed. The risk and uncertainty of the project is investigated by Monte Carlos simulation and tornado diagrams. It has been found that the projects that are normally rejected in standard cost benefit analysis would be accepted if the impacts of urbanizations in the peri-urban areas are considered.

scholarly journals Cost and benefit analysis of maintaining Delonix regia trees on Nguyễn Văn Linh street in Ho Chi Minh City

2017 ◽  
Vol 1 (T4) ◽  
pp. 215-221
Author(s):  
Thao Thi Phuong Nguyen ◽  
Kha Thi Ngoc Phan
Keyword(s):  
Urban Areas ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Ho Chi Minh City ◽  
Benefit Analysis ◽  
Street Trees ◽  
Cost And Benefit ◽  
Delonix Regia ◽  
A Value ◽  
Cost And Benefit Analysis

Street trees play the important roles for the natural environment, and bring a lot of benefits to people in urban areas, especially at Ho Chi Minh City - an area with the fastest urbanisation and industrializationin Vietnam. However, the area of the street trees is now decreasing considerably due to the urban planning, removal and replacement. A study on cost and benefit analysis of maintaining street trees was conducted. The study was conducted at Binh Chanh area by applying a cost-benefit analysis of 79 Delonix regia trees for 33 years, from 2015 to 2047. The results of the study showed that the benefits and costs of the project were 965,219,953,929 VND and 1,631,126,904 VND, respectively. Therefore the project is not only economically feasible with a net profit of VND 963,588,827,025 but also contributes to reducing the environmental pollution of the city with a value of 29,249,089,513 VND per year

scholarly journals Congested Urban Areas with High Interactions Between Vehicular and Pedestrian Flows: A Cost-Benefit Analysis for a Sustainable Transport Policy in Naples, Italy

2018 ◽  
Vol 12 (1) ◽  
pp. 273-288 ◽  
Author(s):  
Armando Cartenì ◽  
Maria Luisa De Guglielmo ◽  
Nicola Pascale
Keyword(s):  
Travel Time ◽  
Urban Areas ◽  
Ad Hoc ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Simulation Models ◽  
Specific Reference ◽  
Sustainable Transport ◽  
Benefit Analysis

Introduction/Methods:A significant application of the Sustainable Urban Mobility Plan of Naples, in southern Italy, will be described with specific reference to design a sustainable transport scenario for one of the highest density and congested area of the city: Municipio square, in the centre of Naples, where the homonymous station of the Metro Line 1 was under construction. The particularity of this case study is that Municipio Square is a high dense population area characterized by multimodal traffic flows (vehicles and pedestrians) and a thousand of travellers who embark/disembark every day from the marina to the islands of the Naples Gulf (e.g.Capri, Ischia) and cruises around the Mediterranean Sea. Thousands of vehicles and people pass through the square every day, often slowing the vehicular flows.Starting from these considerations, a multi-scale modelling architecture (estimatedad-hocfor the specific case study) was proposed to better evaluate policy impacts (e.g., transport, social, environmental), applying both macroscopic and microscopic simulation models simultaneously to design a sustainable transport scenario in term of both geometrical and traffic solutions.Results:Six different design scenario were compared and the main results of the most significant one are described and discussed. The best project solution reduces the average travel time and the long queues thanks to a better distribution of the flows (both vehicles and pedestrians) in the broader area around of Municipio square. The simulation results also underlined the benefits for pedestrians related to the presence of different size of sidewalks and paths.Conclusion:Because of the realization of the new metro station will increase the pedestrian flows, the external layout of the square was designed, regarding infrastructures and paths, to minimize the conflicts and reduce the overall travel time. The proposed sustainable transport scenario was conceived in term of best geometrical devices and traffic solutions.Finally, a cost-benefit analysis was also proposed, according to the European guidelines, aiming in improving transport, urbanistic, artistic/cultural, aesthetic, economic and environmental aspects as well as liveability for citizens, transport users (public and private) and tourists.

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