scholarly journals Design Approach for Sub-surface Flow Constructed Wetlands

2012 ◽  
Vol 10 ◽  
pp. 42-47
Author(s):  
Anish Ghimire ◽  
Ajay Kumar KC ◽  
Bijay Thapa
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetlands ◽  
Cost Effective ◽  
Surface Flow ◽  
Design Approach ◽  
Design Parameters ◽  
The Cost ◽  
Physical And Chemical ◽  
Effective Design ◽  
Surface Flow Constructed Wetlands

Constructed Wetlands are an engineered wastewater treatment system that tries to mimic the natural biological, physical and chemical processes to treat wastewater. It is emerging as a cost-effective decentralized wastewater treatment solution in the communities where there is availability of inexpensive lands and lack of skilled operators. Different design approaches have been followed and design parameters based on different literatures have been chosen to design a Sub-surface Flow Constructed Wetlands. A simplified design approach well suited to climatic needs to be developed to maintain the cost effectiveness of the system. The kinetic parameters involved in the treatment should be selected properly in order to get the effective design of the system.DOI: http://dx.doi.org/10.3126/hn.v10i0.7102 Hydro Nepal Vol.10 January 2012 42-47

Horizontal sub surface flow Constructed Wetlands coupled with tubesettler for hospital wastewater treatment

2020 ◽  
Vol 267 ◽  
pp. 110627 ◽  
Author(s):  
Nadeem Ahmed Khan ◽  
Rachida El Morabet ◽  
Roohul Abad Khan ◽  
Sirajuddin Ahmed ◽  
Aastha Dhingra ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetlands ◽  
Surface Flow ◽  
Hospital Wastewater ◽  
Surface Flow Constructed Wetlands

Improved test to determine design parameters for optimization of free surface flow constructed wetlands

2019 ◽  
Vol 280 ◽  
pp. 199-212 ◽  
Author(s):  
Changqiang Guo ◽  
Yuanlai Cui ◽  
Yuanzhi Shi ◽  
Yufeng Luo ◽  
Fangping Liu ◽  
...  
Keyword(s):  
Free Surface ◽  
Constructed Wetlands ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Design Parameters ◽  
Surface Flow Constructed Wetlands

IDENTIFYING THE MOST SUITABLE AREAS FOR SURFACE FLOW WETLAND CONSTRUCTION IN LITHUANIA

2015 ◽  
Author(s):  
Antanas DUMBRAUSKAS ◽  
Nijolė BASTIENĖ ◽  
Petras PUNYS
Keyword(s):  
Constructed Wetlands ◽  
Ecological Status ◽  
Surface Flow ◽  
Gis Analysis ◽  
Proximity Analysis ◽  
Wetland Construction ◽  
The Mean ◽  
Two Phases ◽  
Terrain Features ◽  
Surface Flow Constructed Wetlands

GIS-based approach to find the suitable sites for surface flow constructed wetlands was employed for the Lithuanian river basins with low ecological status. According to the nature of the analysed criteria the flowchart consists of two phases. Criteria used include hydrographical network, soil properties, terrain features, land use, etc. Some of them have strictly defined values (constraints), and other ranges within certain limits (factors). Limited criteria were analysed using rejection principle and influencing factors using proximity analysis and overlay methods. Selecting the potential sites using standard GIS analysis tools there was estimated about 3286 sites for possible wetlands with the mean area of inflow basin about 4 km2 in the basins of water bodies at risk.

Price structures for electricity supply and potential consequences for building services systems

2021 ◽  
pp. 014362442199081
Author(s):  
Roger Hitchin
Keyword(s):  
Cost Effective ◽  
Building Design ◽  
Electricity Supply ◽  
Cooling Systems ◽  
Price Structure ◽  
Heating And Cooling ◽  
Future System ◽  
The Cost ◽  
Supply Systems ◽  
Effective Design

Policies to reduce carbon emissions are leading to substantial changes in the demand for electricity and to the structure of electricity supply systems, which will alter the cost structure of electricity supply. This can be expected to result in corresponding changes to the price structure faced by customers. This note is an initial exploration of how possible new price structures may impact on HVAC system and building design and use. Changes in the price structure of electricity supply (separately from changes in price levels) can significantly affect the cost-effective design and operation of building services systems; especially of heating and cooling systems. The nature and implications of these changes can have important implications for future system design and operation.

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