Effective wastewater treatment considerations for refineries | |
| Author | Umar, Raja Muhammad |
| Call Number | AIT Thesis no. EV-94-24 |
| Subject(s) | Sewage--Purification Petroleum refineries--Waste disposal |
| Note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering, School of Environment, Resources & Development |
| Publisher | Asian Institute of Technology |
| Abstract | This research presents the results of a study conducted with the purpose of establishing the extent of the treatment required for the liquid effluent to be discharged from a Refinery undergoing expansion (from topping (simple) to petrochemical (complex) category) in terms of process and pollution. The study was made using all available analytical means at time. Overhead accumulator/Reflux drum conditions were observed through process data sheets (of expansion project termed as Plant 2) for establishing the waste data-sheets; and were implemented with suitable multipliers to the existing facility i.e., Plant 1. Assumption from existing facilities were made for the wastewater that results from other than processes; and to where, the point information was lacking. The Refinery management was party to the due-course. The resulting wastewater was segregated into four main streams as high contamination, clean water, sanitary waste and storm water. This segregation was made, after providing selective treatment to the respective sewers, wherever required. The highly contaminated wastewater was treated by primary treatment through· API separator, TPI separator, DAF-1 before joining equalization where the clean water also gets combined with the same primary treatment i.e., through API-2 and DAF-2. The difference between the two treatments was in their selective treatments. Sanitary waste after equalization of clean and high contamination contents was directly fed to the trickling filter i.e., before complete mix basin equipped with nitrification and denitrification. The purpose of sanitary waste at this point was to provide readily bio-degradable co-substrate, to lessen the refractory shocks through aeration basin recycle. For the present the treated wastewater parameters were meeting the National Environmental Board's standards, in all the aspects, and are predicted to be versatile enough to withstand any minor changes in the wastewater standards in the near future. |
| Year | 1994 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Stoll, -Ing. Uwe |
| Examination Committee(s) | Samorn Muttamara ;Visvanathan, C. |
| Scholarship Donor(s) | Government of Japan |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1994 |