A Cost Effective Environmentally Friendly Treatment of Municipal Wastewater Using Constructed Wetlands for Developing Countries

2003 ◽  
Author(s):  
K. V. Jayakumar ◽  
M. N. Dandigi
Keyword(s):  
Developing Countries ◽  
Constructed Wetlands ◽  
Municipal Wastewater ◽  
Environmentally Friendly ◽  
Cost Effective

scholarly journals Performance Assessment of the Vertical Flow Constructed Wetlands Treating Effluent from the UASB Reactor – A Demonstration in a Tropical Climatic Region

2019 ◽  
Vol 8 (4) ◽  
pp. 9779-9781
Keyword(s):  
Constructed Wetlands ◽  
Municipal Wastewater ◽  
Cost Effective ◽  
Uasb Reactor ◽  
Anaerobic Sludge ◽  
Vertical Flow ◽  
Climatic Regions ◽  
Vertical Flow Constructed Wetlands ◽  
Anaerobic Sludge Blanket ◽  
Treating Effluent

This paper presents the performance of the vertical flow constructed wetlands (VF-CWs) that has been investigated at a demonstration-scale level for the treatment of effluent from the anaerobic digestor (up-flow anaerobic sludge blanket) for municipal wastewater. The area of the bed is 480m2 with a depth of 1.0m, having dual media. The macrophytes (vegetation) used in the VF-CWs is phragmites australis. The performance efficiency of the system was measured for different parameters like BOD, COD, TSS, TKN, and TC. The result indicates that the combination of UASB & VF-CWs offers a very promising way to deal with the municipal wastewater within cost-effective and sustainable approaches, particularly in the developing countries in a tropical climatic regions. The overall removal efficiency from UASB and VFCW for COD, BOD, TSS, TKN is 80.8%, 91%, 88.23% and 92.25% respectively. The total coliforms removal has been observed from 1E+06 to 1E+04 CFU/100ml

Self-Excited Small Scale Hydropower Generator in Malaysia: A Brief Review

2015 ◽  
Vol 761 ◽  
pp. 599-603
Author(s):  
Khairul Azhar bin Mat Daud ◽  
Nik Fazli Sapian ◽  
Ahmad Rasdan Ismail ◽  
Wan Azlina Wan Ismail
Keyword(s):  
Developing Countries ◽  
Renewable Energy ◽  
Water Storage ◽  
Environmentally Friendly ◽  
Cost Effective ◽  
Hydropower Plant ◽  
Rural Environment ◽  
Small Scale ◽  
Run Off ◽  
Domestic Use

Houses and small farms in remote area typically use batteries or generator for their lighting and electricity needs. However, with the use of generators, the availability and cost of fuel to power the generators are of the main concerns. Other type of renewable energy such as wind and solar, which is only available for several hours per day; are also very costly. Hence, a cheaper and reliable option is needed. Although large hydropower plant provides electricity for industry and domestic use, small scale hydropower plant does contributes toward providing this basic need to remote, off-grid areas and backup power particularly in developing countries. Thus, this paper focuses on small scale hydropower, self-excited application which does not require river-run-off or dam for water storage. It is cost effective, environmentally friendly and the turbine system can be manufactured locally. Several existing research in Malaysia are highlighted and small scale hydropower is reviewed based on their application on rural environment.

scholarly journals Advances in Environmental Detection and Clinical Diagnostic Tests for Legionella Species

2021 ◽  
Author(s):  
Rajeshwari Vittal ◽  
Juliet Roshini Mohan Raj ◽  
Ballamoole Krishna Kumar ◽  
Indrani Karunasagar
Keyword(s):  
Developing Countries ◽  
Healthcare System ◽  
Diagnostic Tests ◽  
Clinical Manifestations ◽  
Cost Effective ◽  
Clinical Samples ◽  
Detection Techniques ◽  
Conventional Culture ◽  
Legionella Species ◽  
Mild Fever

Abstract Legionella is a fastidious organism that is difficult to culture in the lab but is widely distributed in environmental, domestic, and hospital settings. The clinical manifestations due to Legionella infections range from mild fever to fatal pneumonia and multiorgan pathologies. Legionella outbreaks though prevalent globally are not reported in developing countries due to difficulties in isolating this organism and the lack of simple diagnostic protocols. Here, we review the literature from across countries to present various methods used to detect Legionella from environmental and clinical samples. We compare the sensitivity and the specificity of the conventional culture-based assays with the recent methods and discuss approaches to develop better detection and diagnostic tests. With better cost-effective detection techniques and regular monitoring of the susceptible sites, which may harbor Legionella colonies, most of the Legionella infections can be prevented. As a result, considerable burden, caused by Legionella infections, on the healthcare system, in especially economically weaker countries, can be mitigated.

scholarly journals Energy Retrofitting Opportunities Using Renewable Materials—Comparative Analysis of the Current Frameworks in Bosnia-Herzegovina and Slovenia

2021 ◽  
Vol 13 (2) ◽  
pp. 603
Author(s):  
Darija Gajić ◽  
Slobodan Peulić ◽  
Tim Mavrič ◽  
Anna Sandak ◽  
Črtomir Tavzes ◽  
...  
Keyword(s):  
Developing Countries ◽  
Residential Buildings ◽  
Cost Effective ◽  
Primary Energy ◽  
Low Carbon ◽  
Resource Exploitation ◽  
Renewable Materials ◽  
Building Stock ◽  
Low Carbon Economy ◽  
Eu Member States

Sustainable approaches for retrofitting buildings for energy efficiency are becoming necessary in a time when the building sector is the largest energy consumer. Retrofitting building stock is effective for reducing global energy consumption and decreasing resource exploitation. Less developed EU member states and neighboring developing countries show reluctance towards healthy and renewable materials. Implementation of sustainable materials for energy retrofitting is slowed down due to gaps in legislation and effective strategic programs, availability of bio-based materials, lack of knowledge regarding use and maintenance of renewable products, and marketing lobbies. Use of bio-based materials in refurbishment is important due to their negative or low global warming potential (GWP), low primary energy (PEI) need for production, cost-effective benefits, and recycling/reuse potential. Role of environmentally friendly solutions and low-carbon economy growth is particularly relevant in developing countries, such as Bosnia-Herzegovina, that cannot afford innovative energy recovery systems, yet possess a significant amount of poorly managed building stock. This research aims to analyze frameworks regarding retrofitting of residential buildings in Bosnia-Herzegovina and Slovenia. The analysis tackles indirect causes, studies the legal background, and examines strategic frameworks; thus, it indicates potential barriers for implementation of recommended retrofitting solutions based on renewable materials.

Area-based speciation kinetic analysis of the multipollutant removal in Constructed Wetlands to enhance its treatment efficiency

2021 ◽  
Author(s):  
Manoj Kumar ◽  
Rajesh Singh
Keyword(s):  
Wastewater Treatment ◽  
Kinetic Analysis ◽  
Constructed Wetlands ◽  
Municipal Wastewater ◽  
Zero Order ◽  
Pollutant Removal ◽  
Municipal Wastewater Treatment ◽  
Treatment Efficiency ◽  
First Order ◽  
Present Study Area

In the present study area-based, pollutant removal kinetic analysis was considered using the Zero-order, first-order decay and efficiency loss (EL) models in the constructed wetlands (CWs) for municipal wastewater treatment....

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