Greenhouse gas emissions during a defined sewage transport and treatment infrastructure : from generation nodes to treatment and release | |
| Author | Chonticha Deela |
| Call Number | AIT Thesis no.EV-22-02 |
| Subject(s) | Greenhouse gas emissions Wastewater--Treatment |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engineering and Management |
| Publisher | Asian Institute of Technology |
| Abstract | The distribution of pollutants in a sewer, with the anaerobic conditions and microbial processes has an impact on GHGs. In contrast, environmental conditions such as temperature positively impact microbial activity resulting in increasing rates of microbial decomposition. This project will give the following benefits by measuring GHG emissions in a single sewage transport and treatment track: In time on GHGs fluxes at various phases of wastewater transit and treatment, Highlight the challenges in sewage transport and management, aiding in the development of better design and thinking of wastewater management, Provide data that collectively will bring attention to the need of appropriate management and mitigation techniques from source to disposal, which usually not fully accounted for, in time measurements will be conducted during Winter vs Spring to estimate the temperature and rainwater in time effect on GHGs fluxes related to water management and infrastructure for sewage transport. The results of the various studies, sludge is a difficult point to sample since production is inconsistent and sluggish; operators indicate that sludge dewatering occurs three or four times a year because a new batch takes months to create. This implies that each one batch sits in open storage, where microbial activity continues until BOD levels drop below a certain threshold. SBR operation is inconsistent, with aerobic cycles not occurring at regular intervals, making sampling problematic at times when aeration is about to begin, resulting in inaccurate cyclical methane measurements. Operational management has focused on total solids since pumping from each storage tank to the main bulk and subsequently to the wastewater treatment facility is inefficient. Each tank retains bulk solids from the faces, converting each unit into tiny reactors where COD and BOD are converted to biomass and gases. Another point of concern is the low DO at each level; if the infrastructure cannot be modified, aeration of these tanks is suggested to avoid anoxic situations that result in micro niches of GHG emissions over the campus. |
| Year | 2022 |
| 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) | Cruz, Simon Guerrero |
| Examination Committee(s) | Thammarat Koottatep;Xue, Wenchao |
| Scholarship Donor(s) | Royal Thai Government Fellowship |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 2022 |