| Author | Samarakoon, T. M. W. R. M. B. |
| Call Number | AIT Thesis no.EV-08-37 |
| Subject(s) | Sewage--Purification--Nitrogen removal
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| Note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering in Environment Engineering and Management |
| Publisher | Asian Institute of Technology |
| Abstract | Anammox process was studied in a pilot scale gas-lift reactor in two phases. In phase I, investigation was done with synthetic wastewater. The initial concentration of seed biomass was 0.4 g VSS L⁻¹. The reactor was run for 105 days and achieved maximum nitrogen loading rate and nitrogen removal rate as 0.53 kg (NH⁺₄-N + NO⁻₂-N) m⁻³ d⁻¹ and 0.48 kg (NH⁺₄-N + NO⁻₂-N) m⁻³ d⁻¹. The average ammonium and nitrite removal efficiencies were 83 % and 98 %. The maximum specific nitrogen removal rate was 0.2 g N g VSS⁻¹ d⁻¹. In phase II, the combined AS/PN-Anammox process was operated for 55 days with surimi processing wastewater. The concentration of ammonium and nitrite in AS/PN effluent were 84-207 mg NH⁺₄-N L⁻¹ and 27-192 mg NO⁻₂-N L⁻¹. The maximum nitrogen loading rate and removal rate were 0.33 kg (NH⁺₄-N + NO⁻₂-N) m⁻³ d⁻¹ and 0.27 kg (NH⁺₄-N + NO⁻₂-N) m⁻³ d⁻¹. The average ammonium and nitrite removal efficiencies were 70 % and 96 %. The maximum specific nitrogen removal rate was 0.09 g N g VSS⁻¹ d⁻¹. Capital and operating costs of combined AS/PN-Anammox process for a medium sized seafood processing industry was estimated as part of cost benefit analysis. |
| Year | 2008 |
| 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 and Management (EV) |
| Chairperson(s) | Annachhatre, Ajit P.; |
| Examination Committee(s) | Visvanathan, C.;Shipin, Oleg V.; |
| Scholarship Donor(s) | Thailand (HM Queen); |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2008 |