Removal of nitrogen and phosphorous in a facultative and a water hyacinth pond : a case study | |
| Author | Mishra, Abadh Kishore |
| Call Number | AIT Thesis no. EV-88-1 |
| Subject(s) | Water-hyacinth Water--Purification--Phosphate removal Water--Purification--Nitrogen removal |
| Note | A thesis submitted in partial fulfilment of the requirement for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | A study was carried out in facultative and water hyacinth ponds operating in parallel and receiving mainly domestic wastewater after pretreatment in an anaerobic pond. After two months of experiments on this system, the load was increased in the water hyacinth pond by sending the complete flow in this pond and the experiments were continued. During both stages, nitrogen and phosphorous were monitored at different points to observe their removal in facultative and water hyacinth ponds. Organic, nitrite and nitrate nitrogen removal were found much better in the hyacinth pond whereas the ammonia nitrogen and phosphorous removal was comparatively better in the facultative pond. Total nitrogen removal was almost equal in both the ponds. Dissolved oxygen concentration was always much higher at every points in the facultative pond. However with double loading the nitrogen and phosphorous removal decreased further in the water hyacinth pond. Mean percent removal based on concentrations for TKN, NH3-N, Org-N, N02 -N, N03-N and TP for the facultaive pond were 37, 43, 26, - 1867, -55 and 15 % and the were 36, 30, 65, percent removal corresponding removal rates in t _he water hyacinth pond 14, 40 and 9 % respectively. During double loading, the rates in the water hyacinth pond for average N02 -N, N0 3-N TKN and TP were -29, 15, 26 and 8 % respectively. |
| Year | 1988 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | Orth, Hermann M. |
| Examination Committee(s) | Chongrak Polprasert ;Ahn, Kyu-Hong |
| Scholarship Donor(s) | DANIDA |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1988 |