|
|
|
| Pilot study on oil refinery wastewater advanced treatment and desalination. |
|
|
|
|
Abstract As oil refinery wastewater advanced treatment devices gradually lost their function one or two years after operated in some petrochemical companies, a combined advanced treating process of “integrated suspended carrier biological oxidation, sand filtration, ozone-biological activated carbon filtration”and desalination process of “ultrafiltration and reverse osmosis (UF+RO)” were developed. Seven-month pilot-test showed that main contaminants of outlet in the advanced treatment plants could be removed thoroughly, COD, NH3-N, BOD5, oil and turbidity of the reclaimed water were better than the standard of reclaimed water; furthermore, the desalted water had the electric conductivity of 35~40μS/cm during the running of UF and RO which could be used as fresh water of power workshop. During the pilot test, the pollution and clogging of the membranes of UF and RO had not happened. The combined advanced treating process could resist the loading shocking and keep high removing efficiency and stable running.
|
|
Received: 06 January 2009
|
|
|
|
|
|
|
