Upcycle electrical insulators as a media of constructed wetlands for treating grey water | |
| Author | Rungnapha Promtarakorn |
| Call Number | AIT Thesis no.EV-25-14 |
| Subject(s) | Graywater (Domestic wastewater)--Recycling Constructed wetlands--Design and construction Sewage--Purification |
| 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 global water scarcity crisis highlights the importance of sustainable wastewater treatment solutions. In urban settings, wastewater reuse plays a critical role, and constructed wetlands (CWs) have emerged as a promising method for wastewater treatment. The insulators, which were considered waste, are abundant but often not properly managed, creating a significant environmental issue in many regions. This research aims to address the challenge of waste management by transforming insulators into a valuable resource for wastewater treatment, focusing on the effectiveness of these materials in removing nutrients from wastewater. This study investigated the use of upcycled porcelain insulators from old power distribution systems as a medium for constructed wetlands (CWs) in treating greywater. The results revealed that upcycled insulators, Insulators small-size upper (SU), demonstrated significant effectiveness in treating greywater. The hydraulic retention time (HRT) of 48 hours with small-sized insulators showed the highest removal efficiencies for several parameters, including TSS (91.95%), oil and grease (85.67%), ammonia (60.79%), total nitrogen (TN) (32.05%), and total phosphorus (TP) (63.40%). In contrast, Insulators large-size upper (LU) showed significantly lower removal efficiencies, particularly for oil and grease and phosphorus. Additionally, the study found that at HRT48-SU, key water quality parameters such as pH, dissolved oxygen (DO), TSS, oil and grease, and fecal coliforms met or exceeded the standard requirements. However, total nitrogen (TN) and ammonia (NH₃-N) levels exceeded the standard limits across all HRTs. The findings highlight the ability of small-sized upcycled insulators to support improved microbial activity and adsorption processes, leading to more efficient treatment of greywater. |
| Year | 2025 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Water Resources and Environmental Engineering (DWREE) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Thammarat Koottatep; |
| Examination Committee(s) | Ha, Thanh Dong;Ekbordin Winijkul;Tatchai Pussayanavin; |
| Scholarship Donor(s) | Royal Thai Government;AIT Scholarship; |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 2025 |