Performance of functional green 3R wall biotechnology in high profile urban areas | |
| Author | Alisara Phocharoean |
| Call Number | AIT Thesis no.EV-19-01 |
| Subject(s) | Refuse and refuse disposal Green roofs (Gardening) Recycling (Waste, etc.) Waste minimization Biotechnology |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Environmental Engineering and Management |
| Publisher | Asian Institute of Technology |
| Abstract | Currently, many countries have been faced dense construction problems in urban areas which result from higher urban population rate, it effects on quantity greenery areas reduce in big cities. Green wall is best way to solve this problems. This scenario can make urban waste management and agriculture (urban food production) even more attractive and economically sustainable. The objective of this study was to develop an innovative Green 3R Wall biotechnology functional design for use in public urban settings. To integrate wastewater (human urine) fertilizer into the Green 3R Wall stem without causing any unpleasant odor and hygienic problems, the semi-automated drip irrigation / fertilization system was developed to deliver urine fertilizer to individual plants in a sustainable and odorless way while applying the different specific nitrogen loading rates of wastewater (urine) fertilizer. This development integrate Double Green Walls with waste recycling (3R) and urban agricultural food production based on wasted nutrients recycling. Different varieties of esthetically pleasing and food-producing plants have been grown under different recycling of solid organic and plastic waste. The physiological parameter of these plants has been examined to quantify the advantages derived from green walls. The Green 3R Walls help to save money by reducing waste, producing food and improving land use. The system was found to have good hydraulic performance to irrigate water and fertilize wastewater (urine) fertilizer to plants without significant clogging problems. This system water velocity was found to be 0.42 m / s, which is optimal for the fertilization system for drip irrigation. It can also be concluded that 4 liters of irrigation water was sufficient to remove fertilizer from the pipe and drip emitters. The fertilizer distribution uniformity of this system was found that it has 92.82% of emission uniformity (%EU) which means that the wastewater (urine) fertilizer was distributed evenly to individual plants. In olfactory examination of wastewater (urine) fertilizer application was not found the unpleasant odor even at high specific application rates (NLR of 1.86 gN/m2.d). This can be concluded that this drip irrigation/fertigation system was capable of fertigation wastewater (urine) fertilizer at the high nitrogen loading rate. In the studies on irrigation/fertigation regimes, the selected plants species in Double Green 3R were monitored the physiological parameters in order to determine the appropriate N loading rate. It was found that at the NLR of 3.48 – 4.06 gN/m2 .week was the optimum rates for all plants varieties and this application rate was appropriate to fertigate without unpleasant odor. In terms of wastewater (urine) recycling, solid waste recycling and urban food production, the developed Double Green 3R Wall can be concluded with greater benefits than general green walls. |
| Year | 2019 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | Shipin, Oleg; |
| Examination Committee(s) | Xue, Wenchao;Salin, Krishna R.; |
| Scholarship Donor(s) | Royal Thai Government;Asian Institute of Technology Fellowship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2019 |