1 AIT Asian Institute of Technology

Development of green 3R walls retrofits integrating waste and water management on AIT campus

AuthorHozad, Ahmad Shabir
Call NumberAIT Thesis no.EV-18-01
Subject(s)Sewage--Purification Management

NoteA thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engineering and Management
PublisherAsian Institute of Technology
Series StatementThesis ; no. EV-18-01
AbstractWith an increase in urban population and lack of greenery, Green Wall is an ideal solution to achieve greenery while overcoming the issue of lack of space. Further integration of Urban Waste Management and Agriculture (Urban food production) into this scenario can make it even more attractive and economically sustainable. This study focused on start-ups of Green Walls on AIT campus sites which incorporated waste and water management techniques with co-benefits also including energy savings (thermal protection). The walls were created using the 3R (Reduce, Reuse and Recycle) concept, thus the name, Green 3R Walls. Various aesthetically attractive and food producing plant creeper species were planted and grown as start-ups under different conditions and on various site locations. The growth of these plants over time was studied to quantify numerous benefits offered by Green Walls. The Green 3R Walls help in monetary savings through enhanced waste attenuation, food production, landscape improvement and thermal protection. The Green 3R Walls were estimated to reduce temperature on campus sites by up to 3°C. The use of wastewater (WW, Urine) as a fertilizer was shown to potentially reduce the campus wastewater load and contribute to saving in expensive wastewater treatment, while dealing with it as valuable resource. If one assumed that this WW fertilizer (arguably, one of the best agriculturally acknowledged fertilizers), was applied at odor appropriate and physiologically sustainable rates (Nitrogen Loading Rate of up to 2.92 gN/m².week and even higher) and considered total available area for potential Green 3R Walls, it could be stated that entire urine stream generated daily on campus (varying from 2.2 to 4.5m³) could be accommodated on campus as a valuable resource with significant benefits. A novel irrigation/fertigation system was developed for Roof and Wall situations, while safe and economical hydraulic regime was proposed to ensure aesthetically sustainable. In the studies on monitored plant physiological parameters under various conditions, it was observed that Mexican creeper (Antigonon leptopus), paper flower (Bougainvillea glabra) and Butterfly pea (Clitoria ternatea) were the most suitable plants for Green 3R Walls.
Year2018
TypeThesis
SchoolSchool of Environment, Resources, and Development (SERD)
DepartmentDepartment of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC))
Academic Program/FoSEnvironmental Engineering and Management (EV)
Chairperson(s)Shipin, Oleg V.;
Examination Committee(s)Vilas Nitivattananon;Ekbordin Winijkul;
Scholarship Donor(s)Ministry of Higher Education (MOHE), Afghanistan;Asian Institute of Technology Fellowship;
DegreeThesis (M.Sc.) - Asian Institute of Technology, 2018


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