Activities of oil and gas industry companies is inevitably connected with technological environmental impact. We propose solving a problem of recultivation and processing of oil-contaminated soil by using special products of "AViTA"® series.
Activities of oil and gas industry companies is inevitably connected with technological environmental impact that is why environmental protection issues are of paramount importance for this industry. One of the complex problems is the issue of recultivating soil affected by hydrocarbons and neutralization of their harmful effect on natural habitat. In a number of cases, the conventional techniques for toxicity elimination and recultivation of oil-contaminated soils and grounds formed in the oil production or oil refining processes do not give the results expected, or the process of recultivation or recovery takes many years and even decades.
We propose solving a problem of recultivation and processing of oil-contaminated soil by its bioconversion into construction materials with secondary raw stuff obtained: soil and subsoil, recultivation stuff for industrial sites meant for construction of field development facilities (cluster pads, temporary slurry reservoirs, quarries, excavations, etc.) in the short term.
To realize this task, we have created a range of special products of "AViTA"® series.
All products and technologies offered are certificated and got accepted for manufacture, tested and used at various oil and gas extracting enterprises.
Current issues being solved:
- neutralizing anthropogenic pollution products (oil, gas condensate, radionuclides, heavy metals, pesticides, etc.);
- neutralizing salts and chemicals toxic effect;
- recovery in a short period of time of a fertile soil layer (from 2 months to 2 years), depending on contamination;
- complex approach to ecological type of problems.
How can we help this, is it possible to restore the soil not in many years, but right now, promptly, and to preserve the ecosystem at the same time?
We have developed a new recipe and technology for effective soil disinfection as result of hydrocarbons impact. It is based on the use of a biologically active combination of humic and fulvic substances, which we obtain from natural raw materials – a natural mineral of leonardite, characterized by a high content of these acids.
Humic and fulvic compounds with ion-exchange, chelating and complex-forming properties are introduced into soil contaminated with petroleum products. It allows for acceleration of effective hydrocarbons sorption and activation of microbiological processes, which results in an accelerated destruction of oil products, and soil cleaning-up and enrichment with humus. At the same time, the main agrochemical properties of soils are restored, which contributes to faster recovery of aboriginal microflora.
The Application Technology of AViTA® Products
The application technology of AViTA® enzymatic product is cross-functional for different soils and grounds purification from oil products, and contributes to reconstruction of natural biological processes in them by restoring a single cycle of metabolism, achieved by activation of indigenous micro-flora and micro-fauna to decompose harmful and toxic substances. AViTA® bio-destructor is applied over large areas contaminated with hydrocarbons by spraying devices such as motor pumps.
A number of preparatory activities must be performed before you start, and namely:
- If there is no hazardous wastes certificate, to perform a quantitative chemical analysis of oil-contaminated soil to determine the composition of wastes to be neutralized (percentage of hydrocarbons, pH, etc.).
- To calculate the required quantity of the product and components required to ensure the optimal biodegradation mode for oil-contaminated soil, in particular, of natural additives (straw, crop production wastes, sawdust, small shavings, etc.) to create the structure porosity and aerobic conditions, hydrocarbon fixation, and creation of neutral pH in the oil-contaminated soil to restore and activate the aboriginal biota.
- To prepare a site for processing of oil-contaminated soil, in particular to prepare bundling along the site boundaries to prevent storm waters entry, etc., as well as emergency (spontaneous) spillage of contaminated soil or hydrocarbons outside the site. The site for disinfecting the oil-contaminated soil is lined with 12-15 cm layer of sorbents: crushed straw, sawdust or decomposed organisms to fix hydrocarbons in case of heavy rainfall and other situations arising during works to prevent negative impact on the environment.
- Excavation and transportation of oil-contaminated soils to the processing site and their placement in bits 1.8-2 m high and 15 m wide in base.
- Delivery of the calculated doses of the product or the recultivant, its application and mixing into drill bits, spread in rows of 0.4 m high and 8-9 m wide max.
- After stirring, a pause of 3-4 days is maintained, during which there is an intensive volatilization of light hydrocarbon fractions.
Gumic-fulvic complex is introduced twice with frequency of 4-5 weeks, depending on weather conditions. The recommended dose of solution for detoxification of oil-contaminated soils is calculated for each situation separately. Treatment of oil-contaminated ground is done with an aqueous solution of humic and fulvic complex, and in case of high soil humidity, as a suspension not being diluted with water.
Humic-fulvic complex is well-soluble in water, and simple adding the product to the water or the water to the product (i.e. no mixing equipment is required) is practicably enough. A working solution of humic-fulvic complex can be prepared using any suitable appliances at hand (barrels, containers, etc.) and technical tools (pumps, agitators, watering and vacuum machines, etc.).
After treating the oil-contaminated soil with the solution and before laying it in drill bits, the optimal ground humidity should be min 50% of its field humidity value. Maturation of the treated ground mass, depending on the contamination degree, occurs within 2-6 months. After this time, a man-made soil that meets all sanitary and hygienic standards without exceeding the average background values can be considered environmentally safe. It is ready for use in the form of secondary raw materials: soil and subsoil, recultivation materials for industrial sites meant for construction of field development facilities (cluster pads, temporary slurry reservoirs, quarries, excavations, etc.).
In any case, each non-standard situation of soil contamination with hydrocarbons is considered on a stand-alone basis. We are ready to answer any questions you may have about the technology and commercial conditions for the use of this technology and products.