Omsk, June 14 - Neftegaz.RU.
Installation of a tank block at the Gazprom Neft Omsk Refinery’s “Biosphere” wastewater treatment facility - one of the key projects in the 2nd phase of refinery modernisation being implemented by Gazprom Neft since 2008 - is coming to an end.
The Biosphere will increase efficiency in wastewater treatment, which is now expected to reach 99.9 %, delivering almost complete “closed-cycle” water usage and reducing the burden on municipal wastewater treatment plants. Investment in the Biosphere facility stands at RUB 19 billion and represents one of Gazprom Neft’s most important projects in the Omsk region. Construction is expected to be complete by 2021.
Twelve 20–100,000 m3-capacity tanks are designed for preliminary wastewater treatment. These have been designed and produced by Russian manufacturers in line with international environmental safety standards. The unique Biosphere complex itself is an automated multistage system, combining several stages of purification. All industrial effluents and storm-drainage are collected in the tank block before being sent for mechanical purification, where all impurities and oil products are removed.
At the next - physical-chemical - stage the water is then cleaned using chemical reagents. In the central part of the facility - the bioreactor - the water is mixed with special microbial sludge containing micro-organisms that absorb oil residues before passing through carbon filters for disinfection using ultra-violet light. The new completely clean water is then returned to the production cycle and the filtered petroleum products recycled.
Gazprom Neft is currently undertaking a full-scale modernisation programme at its Omsk and Moscow refineries, involving cumulative investment of more than RUB 550 billion. The 1st stage of this modernisation has involved the construction and reconstruction of key technological facilities, allowing the complete transition to the production of Euro-5 fuels, significantly improving energy efficiency
and environmental friendliness in production.
The 2nd phase of the modernisation programme is ongoing, as a result of which refining depth (the conversion factor) and the production of light petroleum products will increase.