Sergei Sobyanin: The Moscow Oil Refinery has implemented the largest environmental project "Biosphere

The Moscow Oil Refinery, Moscow Oil Refinery, continues to build Biosfera, an innovative biological facility that will allow the company to achieve world-class water treatment performance and reuse up to 75 percent of industrial and storm water, a 360 channel correspondent said.

To evaluate the technologies of the future installation, the construction of which is an important part of the federal program of the Year of Ecology in Russia, the plant was visited by the Green Patrol public environmental organization. Its employees took control samples of treated wastewater in order to check the effectiveness of its work after the launch of the Biosphere.

"Biosphere" is modern complex treatment facilities that guarantee the almost complete removal of all pollutants from industrial effluents. Ecologists came to check how effective the future complex will be.

Ecologists say that ten years ago the plant could only dream of building such treatment facilities. Sewage accumulated in cesspools and their stench poisoned the life of the entire district. Everything changed in 2011 with the advent of a new shareholder - Gazprom Neft. A large-scale modernization began at the Moscow Oil Refinery, as a result of which, at first, a modern closed-type plant was built on the site of outdated treatment plants. The enterprise does not have any direct flows into the river, and all water from industrial complexes and storm sewers is purified at the plant, and only then goes through pipes to the city's wastewater treatment facilities. But the plant plans to increase the efficiency of water treatment and soon Biosfera will be added to modern closed mechanical treatment plants. In it, bacteria specially bred for this purpose will purify the water.

We use both membrane bioreactor technology, which allows us to simultaneously make these facilities modern and compact, and reverse osmosis technology, which allows up to 75 percent of water to be returned to production, which means that the plant’s water consumption will be reduced by actually two-thirds.

- Yuri Erokhin, Head of the Industrial Safety and Ecology Department of the Moscow Oil Refinery.

Consumption river water the plant will be able to reduce by two and a half times, and the efficiency of water purification after the launch of the "Biosphere" will increase to 99 percent.

The scale announced by the refinery is simply impressive. When the complex enters the operation stage, we will check again and show the population what kind of water it was and what it has become. Still, the effect will be quite serious.

- Andrey Nagibin, Chairman of the Board public organization"Green Patrol".

The Biosphere complex will begin its work in autumn. After that, the ecologists of the Green Patrol will once again descend on the plant to once again take water samples for analysis.

• Vertical version from 0.6 - 2 m 3 / day. (energy saving, does not work all the time)
• Horizontal version from 0.6 - 300 m 3 / day. (works all the time)

The system is volatile, it works constantly, in case of a power outage it works offline for up to a week, the degree of purification drops. The minimum service life is 50 years. It is made of high-strength polypropylene, the Czech production. High degree of purification of HBSW up to 98% of technical effluents.

The biological treatment station "BIOSPHERA" needs maintenance no more than once a year - the rest of the time it is completely autonomous in operation. VOC is equipped with a system of protection against large debris.

Laboratory studies were carried out on wastewater treatment VOC "BIOSPHERE" Results of the study:

• The cleaning efficiency for suspended solids was -98.5%
• The cleaning efficiency for oil products was -98.96%
• The purification efficiency for ammonium nitrogen was 95%
• BOD Cleaning Efficiency5 was -92.8%
• The cleaning efficiency for surfactants was -94.28%
• The nitrite cleaning efficiency was at least 98.75%
• Phosphate cleaning efficiency was -96.4%

These studies of wastewater treatment are confirmed by certificates.

in horizontal version:

LOS "BIOSPHERE" of horizontal design 0.6 - 60 m 3 / day, from 3 - 300 people of permanent residence.

Water disposal methods: gravity / forced

The stations are equipped with diaphragm compressors "HIBLOW" by the Japanese manufacturer Techno Takatsuki or "SECOH" by the Japanese manufacturer Secoh Sangyo Co Ltd. Inside the system, in a separate sealed compartment, there is a control unit in which the compressor is installed.

The operation of the installation includes the sequential passage of waste water through the sections of mechanical and biological treatment. Effluent first enters the receiving chamber for mechanical treatment, where sand and other insoluble impurities are deposited. Next, wastewater enters biological treatment, due to the ability of microorganisms to use some pollutants as a source of nutrition. Biological treatment is carried out in two stages: in the absence of oxygen (anaerobic) and in the presence of dissolved oxygen (aerobic).

Autonomous sewerage, septic tank, LOS "BIOSPHERE" horizontal design

Particularly important in anaerobic treatment is the removal of nitrogen from the water, which has an extremely negative effect on the fauna of reservoirs. When the effluents pass through an anaerobic bioreactor with a ruff bioload due to enzymes produced by microorganisms, the ammonium ion is formed from organic compounds. Nitrogen is used for the growth of microorganisms, and thus part of the inorganic nitrogen passes into the newly formed bacterial cells. Then, wastewater containing ammonium nitrogen enters the aerotank, where the ammonium ion is nitrified by activated sludge microorganisms into nitrite and nitrate forms:

NH4++2O-2 =NO2- +2H2O

2 NO2-+ O-2 = 2 NO3-

In the secondary clarifier, nitrifying activated sludge is deposited, it is recirculated to a septic tank - a sludge mineralization chamber, and the remaining organic compounds are oxidized by nitrates. In this case, free nitrogen is released, which is discharged through the duct.

Further purification is carried out in a brush-loaded biotank, the bottom part of which is equipped with an aerator. Due to the access of oxygen to the load, aerobic microorganisms develop, which are necessary for the absorption and oxidation of contaminants. The next step is to calm the sludge mixture and settling it on the bottom of the tertiary clarifier. The purified wastewater is separated from the activated sludge, which, as it accumulates, is removed from the sump.

Purified water is diverted to the nearest watercourse. If necessary, wastewater can be discharged into a reservoir (a well made of metal or reinforced concrete rings). When discharging treated effluents for fisheries, an additional UV lamp is installed.

Let's consider in more detail the work of Los "BIOSPHERE"

in vertical version:

Installed in the vertical system submersible pump Karcher (producing country Germany). Drainage methods: gravity / forced

Autonomous sewerage, septic tank, VOC "BIOSPHERE" vertical design

Principle of operation:

Wastewater treatment in the BIOSPHERE sewer system takes place in two stages:

1. The first stage consists in the settling of suspended particles in a three-chamber settling tank. The sump consists of 3 separate sections with overflows through which sewage flows flow. The overflows are located in such a way that the wastewater flows at the lowest speed, due to which coarse suspended particles settle to the bottom in each chamber. The first capacity is single-chamber and maximum volume, the second and third are the same. So, for example, the volume of the chambers of the BIOSPHERE 5 installation is 800 l, 400 l and 400 l, and, accordingly, the total volume of the sump is 1.6 m3.

2. The second stage of post-treatment in the bioreactor - from the third chamber, clarified wastewater is pumped to the upper part of the installation using a drainage pump operating on a timer (15 min. / On - 45 min. / Off.) And through the sprayer it is evenly sprayed over the entire area of ​​the brush downloads. Also, at the time of spraying, wastewater is saturated with oxygen. A bioreactor is a structure in which waste water is filtered through a feed material covered with a biological film (biofilm) formed by colonies of microorganisms. Further, part of the water saturated with bioorganisms returns to the first chamber, which makes it possible to accelerate the process of decomposition and sedimentation of suspended particles. The main volume of purified water is returned to the third chamber. The selection for the outlet of purified water from the installation comes from the middle part of the third chamber. This process prevents the sludge from the bottom and dead bacterial colonies floating on the surface from leaving the unit.

The processes of sorption and destruction of sewage contaminants in biological filters are in many respects similar to the processes in soil treatment facilities in irrigation fields and filtration fields. However, the processes of biological oxidation of organic pollutants in biofilters proceed much more intensively due to the increased porosity of the feed material compared to the porosity of soils. So, for example, the porosity of brush loading is ten times higher than the porosity of sand, one of the best natural materials for irrigation fields.

Being filtered through the loading of the biofilter, contaminated water leaves insoluble impurities in it that have not settled in the primary and secondary clarifiers, as well as colloidal and dissolved organic substances sorbed by the biological film. The term "filtration" should not be simplified to understand only the processes of mechanical filtering through the thickness of the feed material. A biofilter is a biological treatment facility with a fixed biomass fixed on the surface of a carrier medium (feed material), which carries out the processes of extraction and complex biological processing of contaminants from wastewater. Biofilm microorganisms oxidize organic substances in the process of enzymatic reactions, while receiving nutrition and energy necessary for their life activity. Microorganisms use part of organic substances as material to increase their mass. Thus, in the process of metabolic reactions, contaminants are converted into simple compounds (water, mineral compounds and gases), as a result, organic contaminants are removed from waste water, denitrification processes take place, and the mass of the active biological film in the body of the biofilter increases. The spent and dead film is washed off and removed from the biofilter body by flowing wastewater. The oxygen necessary for the biochemical process enters the bulk of the load through the natural ventilation of the filter.

Attention!!! The manufacturer reserves the right to make changes to various design parameters without compromising performance.

Start-up and commissioning tests of the Biosfera innovative complex of biological treatment facilities have begun at the Gazprom Neft Moscow Oil Refinery. Moscow Mayor Sergei Sobyanin and Chairman of the Management Board of Gazprom Neft Alexander Dyukov visited the new production facility of the Moscow Refinery.

Construction of the "Biosphere" installation - environmental project a comprehensive program for the modernization of Gazprom Neft’s refining assets, one of the key priorities of which is the consistent reduction of production load on environment. The construction of "Biosfera" by order of the Government of the Russian Federation is included in the federal action plan for the Year of Ecology in Russia. Investments by Gazprom Neft in the project amounted to 9 billion rubles.

Completion of the construction of Biosfera is an important stage in the plant's environmental modernization program and its final stage in terms of minimizing the impact on the aquatic environment. A unique technological system developed by domestic engineers will complete the formation of the plant's water treatment complex and increase the efficiency of wastewater treatment to 99.9%. Through the use of modern technologies, Biosfera will ensure a closed water consumption cycle and significantly reduce the load on the city's wastewater treatment infrastructure. The Moscow Oil Refinery will reduce the intake of river water by 2.5 times, and 75% of treated effluents will be returned back to production.

“The Moscow Oil Refinery is implementing a large-scale environmental program, as a result of which the level of the enterprise's impact on the environment should decrease by about 4 times. Today the next stage of modernization has been completed. Wastewater treatment facilities "Biosfera" have been built, which will ensure the most complete purification of wastewater. In addition, the company will reduce water intake from the Moskva River by 2.5 times due to the reuse of treated water within a closed cycle. This is good news for all residents of the capital and the Moscow region. Especially for those who live near the plant and go for walks in parks located in the lower reaches of the Moskva River,” said Moscow Mayor Sergei Sobyanin.

Alexander Dyukov, Chairman of the Management Board of Gazprom Neft, noted: “The Moscow Refinery is by no means the only petrochemical enterprise operating within the boundaries of Moscow, but today it is the undisputed leader in terms of the scale of changes and the dynamics of production modernization. The projects that Gazprom Neft is implementing at the Moscow Refinery solve the company's priority tasks of minimizing the impact of production on the environment, improving the technological level and operating efficiency of the refinery. By investing in innovative environmental solutions, implementing modern digital production management technologies, we set new standards for industrial and environmental safety, which will determine further development throughout Russian oil refining.

Reference

"Biosfera" is a multi-stage wastewater treatment system, where industrial effluents enter after preliminary treatment at the operating mechanical treatment facilities of the Moscow Oil Refinery. At the first stage, water passes through the pressure flotation unit, where all the remaining mechanical impurities and oil products are knocked out with a powerful air flow. After the flotators, the water passes to the central part of the plant - the membrane bioreactor.

Here, wastewater is mixed with sludge, which contains microorganisms that can absorb and process oil residues. They are adapted to this environment and were grown especially for Biosfera at the Lyubertsy treatment facilities of Mosvodokanal. After the sludge has fulfilled its function, it is filtered through thousands of membranes, the pore diameter of which is smaller than a human hair. This is the most advanced water treatment solution in existence. In addition, the tank is completely waterproofed, all exhaust gases are specially treated at photoionization stations, which guarantee the complete removal of odors and pollutants. The air is first cleaned on filters, and then disinfected with ultraviolet light.

In the final stage, the purified water is successively passed under pressure through 200 tons of activated carbon, and then through 1440 reverse osmosis membranes, the cell size of which is not larger than a water molecule. Only after that, purified water is returned to production, and filtered oil products are recycled. Part of the purified water is transferred through pipes directly to the city's wastewater treatment plant. The enterprise has no open drains to the Moscow River. Even rainwater is collected in the storm sewer system and treated.

Start-up and commissioning tests of the Biosfera innovative complex of biological treatment facilities have started at the Gazprom Neft Moscow Oil Refinery.

Moscow Mayor S. Sobyanin and Chairman of the Board of Gazprom Neft A. Dyukov visited the new production facility of the Moscow Refinery.

Completion of the construction of the "Biosphere" is the final stage of work to minimize the impact of the enterprise on the aquatic environment as part of the program of environmental modernization of the Moscow Oil Refinery.

Moscow Mayor S. Sobyanin stressed: “The Moscow Refinery is implementing a large-scale environmental program, as a result of which the level of the enterprise's impact on the environment should decrease by about 4 times. Today the next stage of modernization has been completed. Wastewater treatment facilities "Biosfera" have been built, which will ensure the most complete purification of wastewater. In addition, the company will reduce water intake from the Moskva River by 2.5 times due to the reuse of treated water within a closed cycle. This is good news for all residents of the capital and the Moscow region. Especially for those who live near the plant and go for walks in the parks located in the lower reaches of the Moskva River.”

Indeed, a unique technological system developed by domestic engineers will complete the formation of the plant's water treatment complex and increase the efficiency of wastewater treatment to 99.9%. Besides:

75% of the water used will be returned to the production cycle.

The consumption of fresh river water will decrease by 2.5 times and the load on the city's wastewater treatment facilities of Mosvodokanal will be reduced.

These are grandiose indicators that directly affect the growth of the environmental friendliness of the enterprise's water consumption.

A. Dyukov, Chairman of the Management Board of Gazprom Neft, noted: “The Moscow Refinery is by no means the only petrochemical enterprise operating within the boundaries of Moscow, but today it is the undisputed leader in terms of the scale of changes and the dynamics of production modernization. The projects that "" implements at the Moscow Refinery solve the priority tasks for the company to minimize the impact of production on the environment, improve the technological level and operational efficiency of the refinery. By investing in innovative environmental solutions, introducing modern digital production management technologies, we are setting new standards for industrial and environmental safety, which will determine the further development of the entire Russian oil refining industry.”

Recall that the construction of Biosfera began in October 2015. This is an environmental project of a comprehensive program for the modernization of oil refining assets of Gazprom Neft.

The construction of the "Biosphere" by order of the Government of the Russian Federation is included in the federal action plan for the Year of Ecology in Russia.

Investments - more than 9 billion rubles.

According to the associate professor of the Department of Biotechnology of the Russian University of Chemical Technology named after D.I. Mendeleev, Ph.D. Kuznetsova A.E., despite the high cost compared to other options, the MBR treatment technology is promising primarily for the treatment of domestic and industrial wastewater, especially in urban areas, since it can significantly increase the productivity of treatment facilities, increase their compactness and reduce occupied areas.

He also noted that in the world, due to the emergence of a new generation of membranes and an increase in the cost of urban land, there is a rapid growth in treatment plants with MBR - annually by 10-30%.

The complex includes a 2-stage flotation unit, a carbon filter, a membrane bioreactor, as well as reverse osmosis and dehydration systems.

In March 2016, the installation of RVS-1000 steel tanks for preliminary wastewater treatment began.

In June 2016, the Moscow Refinery began installation of RVS-10000 tanks to collect industrial wastewater and balance it in composition before being fed into the treatment system.

In August 2016, the installation of a carbon filter unit began to remove organic compounds and oil products from industrial effluents.

In December 2016, the installation of the flotation system equipment was completed (according to the pressure flotation technology, in which contaminants are removed from the water using air flow). In total, 6 devices were installed with a total capacity of more than 5 thousand m3/hour.

Specialist of the Department of Industrial Water Treatment Projects "NPK Mediana-Filter" M. Zavyalova spoke about the uniqueness of the project: “BOS “Biosfera” is designed to treat the production effluent of the Moscow Oil Refinery, and is a whole complex of new generation facilities. All effluents sequentially pass through flotation units, biological treatment units, membrane and carbon filters, and a reverse osmosis unit. All equipment is designed to maintain a stable mode of operation in different operating modes.

The membrane bioreactor planned in this unit will provide efficient biological wastewater treatment, and the unit for deep post-treatment of wastewater based on reverse osmosis units will provide highly purified water for reuse by the enterprise. After the launch of the complex, the volume of waste water will be significantly reduced and, as now, it will flow directly to the treatment facilities of Mosvodokanal. BOS “Biosfera” are unique treatment facilities and have no analogues in Russia.”

Throughout the entire period of construction of the complex at the Moscow Oil Refinery, indicators of water use efficiency have been steadily increasing. Now "Biosphere" will begin to work in full force, and further modernization Moscow Refinery to continue as planned until 2020.

Ahead of the launch of the most modern combined oil refining unit Euro+