Organic and ammonia nitrogen removal suspended solids settling and sludge stabilization using compact rotating biological contactor-settling tank system | |
| Author | Loy, Teck-suan |
| Call Number | AIT Thesis no. EV-88-15 |
| Subject(s) | Sewage sludge digestion Sewage--Purification--Organic compounds removal Sewage--Purification--Nitrogen removal |
| 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 | The study of the removal of organic matter, ammonia nitrogen and suspended solids in a compact RBC-Settling tank system is described. Different concentrations of synthetic wastewater were fed parallel into four 4 - stage laboratory scale cascade - connected RBC-Settling tank reactors, at a fixed rotational speed and hydraulic loading. The results of the systems are presented in terms of ammonia <NH3-N>, organic and suspended solids <SS> loading and removal using the new concept of Disc Biomass Index <DBI>, Sludge Biomass Index <SB!) and Fractional Biomass Volatile Solids Destruction <FBVSD) . DBI and SB! are used to indicate the disk active biomass and sludge stability respectively with respect to organic loading and removal . FBVSD is used to determine the fractional destruction in volatile solids of the sloughed biomass undergoing aerobic and anaerobic sludge digestion -in the settling tank. Microscopic examination showed that an ecological succession exist in this system, provides additional understandings for DBI, SB! and FBVSD . The removal efficiency of suspended solids, total dissolved organic carbon <TDOC> and soluble chemical oxygen demand <SCOD> were more than 95 percent. A MONOD liked hyperbolic function equation fit well for the experimental data, and it gives a reasonable good prediction for the organic removal rate in stage one. |
| Year | 1988 |
| 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 (EEM) |
| Chairperson(s) | Ahn, Kyu-Hong ;Yamamoto, K.; |
| Examination Committee(s) | Kriengsak Udomsinrot; |
| Scholarship Donor(s) | Australian Government; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1988 |
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