| Author | Roy, Pritish Kumar |
| Call Number | AIT Thesis no. EV-95-31 |
| Subject(s) | Sewage--Purification--Phosphate removal
|
| Note | A thesis submitted in partial fulfillment of the requirements for the Degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. EV-95-31 |
| Abstract | In an effort to determine the potential application of nanofiltration in environmental field,
experimental investigations were conducted to evaluate the performance of nanofiltration for
tertiary level phosphate removal in comparison with chemical precipitation and coupled chemical
precipitation and microfiltration. The influence of pressure, initial feed concentration, pH,
competing compound, membrane type, operation period on nanofiltration performance was also
determined.
The experimental study ranges of pressure, concentration, pH were 400-1000 kPa, 2-10
mg/L P, 4-10 accordingly. DL and DK were the two different membranes (from Desalination
Systems Asia), used in the experiments and ammonium suphate was used as the competing
compound.
Results showed that phosphorus removal efficiency for nanofiltration (>95%) is higher
than that for conventional methods (<90%). Higher pressure, higher concentration and higher pH
showed positive responce, while presence of competing compound showed negative responce on
phosphorus rejection. DK is better than DL in terms of rejection, while DL is better in terms of
flux.
Finally, an economic analysis was conducted to compare nanofiltration with conventional
processes. |
| Year | 1995 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. EV-95-31 |
| 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) | Visvanathan, C. |
| Examination Committee(s) | Chongrak Polprasert;Umita, T |
| Scholarship Donor(s) | SIDA (Swedish International Development Authority) |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1995 |