wastewater collection Articles
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Uttara Affordable Housing , Bangladesh - Case Study
The Biopipe system is placed on the top of the wastewater collection ...
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Assessing population coverage of safely managed wastewater systems: a case study of Lebanon
This paper presents the evaluation of the proportion of the population connected to safely managed wastewater collection systems (PW) based on the proportion of population connected to wastewater collection systems and additional specific indicators that can properly inform on the extent of environmental risks associated with the disposal of wastewater. A safely managed wastewater factor (SF) ...
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Taking Action for The Future
Sewer networksoperate with practically no installed monitoring of any kind. This simple picture is beginning to change for two main reasons. Firstly, consumers expect ever higher standards from service providers of all kinds, and sewerage undertakers are beging challenged by this. Secondly, environmental legislation is demanding much higher performance from wastewater collection and treatment ...
By WRC Ltd
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Alternative sanitation options for households and communities
The resource-intensive wastewater collection and treatment systems found in many parts of the developed world are not feasible for meeting the sanitation[1] needs of the less developed regions still lacking or having poor sanitation. Establishment and maintenance costs are high and large amounts of energy are required ...
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Impediments to the adoption of alternative sewerage in South African urban informal settlements
In recent decades South Africa has witnessed a substantial growth in its urban population. This growth has been accompanied by the mushrooming of informal settlements (shantytowns) flanking more formal development. The lack of adequate urban drainage in many of these informal settlements has resulted in extremely polluted environments which add to the disease burden of the poor people who live ...
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CSOs Reduced by 77%, SSOs Reduced by 78%
Nashville, TN - The City of Nashville struggled with excessive overflows totaling 158 SSOs and 30 CSOs in 1989 and 1990. They found themselves with a consent decree and officials immediately started abatement programs to address both issues. A long term flow monitoring network was installed by ADS Environmental Services along with I/I analysis designed to isolate the problems.Measurable ...
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Treatment of linear alkylbenzene sulfonate (LAS) wastewater by internal electrolysis – biological contact oxidation process
Surfactant wastewater is usually difficult to treat due to its toxicity and poor biodegradability. A separate physico-chemical or biochemical treatment method achieves a satisfactory effect with difficulty. In this study, treatment of the wastewater collected from a daily chemical plant by the combination processes of Fe/C internal electrolysis and biological contact oxidation was investigated. ...
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Monitoring brings reliability to wastewater collection systems - Case Study
Remote terminal units help an Oregon utility monitor 40 major pump and lift stations. Clean Water Services (CWS), a water reuse provider in Oregon that serves more than 500,000 residents, has partnered with local organizations to educate the public about the importance of wastewater reuse. CWS Government and Public Affairs Manager Mark Jockers says they intend to increase public understanding ...
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Estimating the costs of collective treatment of wastewater: the case of Walloon Region (Belgium)
This paper contributes to a better understanding of costs for collective wastewater treatment in the Walloon Region (Belgium). Based on a large set of data, unit costs to population equivalents are modelled. Considering investment as well as exploitation costs, the model includes not only wastewater treatment plants but also collector and sewage networks in an integrated approach at the technical ...
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Innovative research program on the renewal of aging water infrastructure systems
The needs associated with the aging water infrastructure are immense and have been estimated at more than $1 trillion over the next 20 years for water and wastewater utilities. To meet this growing need, utilities require the use of innovative technologies and procedures for managing their systems. To help meet their needs, the U.S. Environmental Protection Agency initiated a research ...
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Development of monitoring and evaluation system for wastewater issues in Palestine
Wastewater is the main source of groundwater pollution if it is not properly collected and treated. In many parts of the Gaza Strip and the West Bank wastewater is collected through cesspits, while in other areas it is collected through networks and treated in central treatments plants. Collecting aggregate information on the level of indicators with concern to the wastewater issues (collection, ...
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Sedona, AZ Onelift - Pump Station - Case Study
Oldcastle Infrastructure’s OneLift™ Pump Station offered a streamlined solution for the Sedona, Arizona, wastewater collection system by providing pump stations at two locations as part of the City’s infrastructure. THE CHALLENGE Because the City is situated at the bottom of a valley, most of its waste water goes through a series of pump stations to ...
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Two different purification systems at Istanbul-Tuzla and Adana-Kozan, their characterizations
In most developed countries, wastewater treatment plants are presently utilizing efficient purification technology meeting the sufficiency requirements of quality and quantity. However, in developing countries, the number of wastewater treatment plants is limited. As a result, the establishment of a connection between the wastewater collection system and wastewater purification plants is ...
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Wastewater pond systems using chemical precipitation (fellings dams): state of the art in Sweden
Chemical precipitation in wastewater stabilization ponds – in Scandinavia called fellings dams – has been in operation for more than 50 years. Slaked lime and aluminium salts are the most common chemicals used for precipitation. Long and narrow forms of the ponds and a detention time of at least 5 days have shown, even at a low water temperature and below an ice cover, to produce an average ...
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Development of a diagnostic tool: the wastewater collection network odour wheel
The assessment of nuisance odour problems and the application of an effective odour management programme for the associated industrial activity may be achieved using a representative odour wheel and Odour Profile Analysis methodology. The odour wheel is a very useful tool for conducting odour quality control monitoring and developing a constructive dialogue regarding nuisance odours with the ...
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Alternative collection systems for decentralized wastewater management: an overview and case study of the vacuum collection system in Eretria town, Greece
In small and rural communities, the installation cost of conventional gravity-flow collection systems is often very expensive due to the presence of rocky terrain, high water table, unstable soils, extremely flat terrain, which may impose substantial difficulties in construction. Pressure, vacuum and septic tank effluent gravity collection systems are among the alternatives sewers used most ...
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Statistical assessment of seafront and beach water quality of Mumbai, India
The water quality of seafronts and beaches of Mumbai is under pressure and deteriorating due to discharge of partially treated sewage and wastewater through point and nonpoint sources. The objective of the study was to assess the water quality and to correlate physico-chemical and bacteriological parameters for establishing relationship, association and dependence on each other. The water quality ...
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Utilization rates, water demand and wastewater characteristics of a shared sanitation facility in North Namibia
Shared sanitation facilities are often the only feasible option for sanitation provision in informal settlements. When implementing infrastructure for wastewater collection and treatment, information regarding quantities and constituent loadings is required. Up to now, such data are not available for shared sanitation. In order to provide this information, this study focuses on wastewater ...
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Excerpt Advanced Sewer Technologies Paper
Abstract This document seeks to collect into one place current and new technologies about sewerage system design. The document organizes the information found in the 295 documents that were reviewed into six subject areas: Advanced Onsite Technologies; Alternative Wastewater Collection System Designs and Technologies; Gravity Sewer System Design and Technology; Infiltration Detection and ...
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Modelling micro-pollutant fate in wastewater collection and treatment systems: status and challenges
This paper provides a comprehensive summary on modelling of micro-pollutants' (MPs) fate and transport in wastewater. It indicates the motivations of MP modelling and summarises and illustrates the current status. Finally, some recommendations are provided to improve and diffuse the use of such models. In brief, we conclude that, in order to predict the contaminant removal in centralised ...
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