Disinfection of nightsoil for agricultural reuse | |
| Author | Valencia, Lourdes Gamboa |
| Call Number | AIT Thesis no. EV-79-27 |
| Subject(s) | Night soil Fertilizers and manures--Disinfection |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | Small rural communities with inadequate sewage disposal system need a simple, practical but hygienic system of waste disposal. A promising alternative method of nightsoil disinfection with subsequent utilization for crop production was investigated. High pH-lime treatment was employed to determine the resistance of fecal coliform bacteria, Escherichia coli and the helminth ova, Ascaris lumbricoides. It was observed that considerable coliform reduction was attained as pH increased due to increasing lime concentration, and contact time was found to be less significant in inactivation than lime concentration. However, lime had very little ovicidal effect as Ascaris die-off was only 26.5% even at high pH (pH 12) lime treatment. The nutrient (N and P) contents in the nightsoil were not affected adversely by lime treatment. |
| Year | 1979 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Chongrak Polprasert ; Samorn Muttamara |
| Examination Committee(s) | Lohani, Bindu N. |
| Scholarship Donor(s) | Government of Japan |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1979 |