GE and Russian oil company Bashneft have launched pilot testing of GE’s ZeeWeed membrane bioreactor (MBR) technology for biological treatment of sewage water from the Bashneft-Ufaneftekhim oil processing complex and other enterprises of the Northern Industrial Block of Ufa. Strict discharge regulations, and the need to reuse the treated water, led Bashneft to choose GE's MBR, electrodialysis reversal (EDR) and reverse osmosis (RO) technologies for the pilot testing.
The testing is being conducted in cooperation with the Institute of Petroleum Refining and Petrochemistry of the Republic of Bashkortostan as a part of preparations for a modernization project for biological treatment plants (BTP) of the Bashneft-Ufaneftekhim branch.
During the tests, which will continue until June 30, GE will demonstrate the technological feasibility of sewage purification in compliance with the strict requirements of environmental legislation of the Russian Federation.
In the framework of the project, GE will use ZeeWeed MBR technology, EDR, RO and adsorption on activated carbon. The use of a set of these purification methods enables implementation of a closed-cycle principle and the minimization of water intake requirements. A distinctive feature of purification based on the GE technological process is the absence of preliminary clarification tanks and secondary clarifiers.
At the exit from the aeration tanks, the activated sludge is separated from treated water using ZeeWeed 500 ultrafiltration membranes. Dehydration of oil sludge, precipitation and excess sludge is performed on compact centrifuges. All of the above makes it possible to reduce the area of purification facilities and exclude any chance of contaminant release into the environment.
For more information, visit www.ge.com.
