Factors affecting algal yields from high-rate oxidation ponds treating sewage | |
| Author | Hsu, Sheng-che |
| Call Number | AIT Thesis no. 325 |
| Subject(s) | Algae Sewage--Purification--Biological treatment |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in the Asian Institute of Technology, Bangkok, Thailand, |
| Publisher | Asian Institute of Technology |
| Abstract | The growth of algae and. concurrent sewage treatment has been studied through use of pilot plant high-rate oxidation ponds. The influencing parameters studied were pond depth, detention period and organic areal loading, which were varied over ranges of 25 to 24-5 cm, 0.5 to 1.5 days and 200 to 400 lb BOD/acre-day respectively. According to the selected parameters and their levels a complete factorial experiment was performed and a total of 27 ponds were tested. The test series were divided into three runs which were carried out through randomization. Diurnal tests of algal concentration, pH value, alkalinity and dissolved oxygen were performed at the completion of each run. Pond design parameters were optimized, which yielded the following suggested design criteria: 35 cm (13.8") pond depth, 1.5-day detention period and 300 lb BOD/acre-day areal organic loading. Under these conditions the pond should produce a yield of 126,000 lb of algae/acre year containing 5^u protein. Pond treatment efficiency was 95/ removal of the biochemical oxygen demand of the influent sewage. |
| Year | 1970 |
| Type | Thesis |
| School | Student Research Before 1980 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | McGarry, M.G. |
| Examination Committee(s) | Pescod, M.B. |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1970 |