Advanced primary treatment of a domestic wastewater with polymer technology | |
| Author | Okui, Hiroyuki |
| Call Number | AIT Thesis no. EV-91-14 |
| Subject(s) | Sewage--Purification Polymers and polymerization |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | Chemically enhanced primary treatment using ferric chloride in conjunction with cationic polymer (CAT-FLOC-CL) and anionic polymer (R-300) was tested for the treatment of AIT wastewater based on pilot-plant experiments. The appropriate dosages (ferric chloride = 40 mg/l, CAT-FLOC CL = 10 mg/l, R-300 = 1 mg/l) was determined by jar tests, considering the effect of each chemical on the charge neutralization. In pilot-plant experiments, maximum removal efficiencies of 71%, 57%, 65%, 78% for total COD, soluble COD, SS and total phosphate, respectively, were observed for the AIT wastewater. However, these removal efficiencies were affected by flowrate and influent characteristics. The dewater-ability of sludge produced was examined by the measurement of sludge resistance and capillary suction time. The better dewater-ability was obtainable by the chemical addition when compared to the conventional primary sludge. |
| Year | 1991 |
| 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) | Chongrak Polprasert; |
| Examination Committee(s) | Mino, Takashi ;Zhuang, Ya-Hui |
| Scholarship Donor(s) | Tokyu Construction Company Ltd. ; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1991 |