Method for reclamation of oil contaminated soil

FIELD: chemistry.

SUBSTANCE: method includes adding biopreparations and sowing high sorption capacity plant seeds. Contaminated areas are irrigated with p-aminobenzoic acid in concentration of 0.1-0.2%. When dissolving p-aminobenzoic acid, stevia leaves are added to the hot solution in amount of 0.2%. After cooling the solution to 20-25°C, biopreparation Baikal - EM-1 is added in concentration of 1:100. Amaranth is then planted 2-3 weeks after irrigation. Repeated irrigation in the same concentration is carried out at the branching phase of the amaranth.

EFFECT: high efficiency of the method.

1 tbl

 

The invention relates to biotechnology and ecology and can be used for restoration of fertility of soils polluted by oil. A method is known in which seeded annual culture amaranth, with sorption capacity of the mixture with zeolite clay Alanic (patent No. 2396133 from 10.08.2010 G., IPC B09C 1/00, A01B 79/02).

The disadvantage of this method is an expensive technology, including planting in the first and second years of annual and perennial grasses in a mixture with zeolite clays.

Also known a method of reproduction of soil fertility, when on the surface scatter the straw, treating it with a mixture of biologics Barton and Baikal EM-1, covering the surface of the clay vallecula (patent No. 2486736 from 10.07.2013 G., IPC A01C 21/00, AV 79/02, C09K 17/00).

However, this technology is not effective enough, since it is necessary to grow a crop, to scatter across the field crop residues, spray them with an aqueous solution of a biological product, to cause the clay layer and to plough. All of these elements increase the cost of implementation of the method.

The closest technical solution is a method, which is carried out without plowing layer rotation with the subsequent introduction of Alamitos in a mixture of comminuted plant remains, from autumn sowing green manure crops, seeds which are soaked in a solution of a biological product� Baikal EM-1 in a mixture of PABA at a concentration of 0.1%, and spring green mass plowed with advanced spraying the same solution mixture (patent No. 2481162 dated 10.05.2012, IPC VS 1/00, VC 1/10, A01B 79/02, 09C 1/00, VC 1/10, A01B 79/02).

The disadvantage of the prototype method is its complexity sequential high-cost items, including the plowing of the field, introducing a large amount of clay, organic matter, seed treatment is a biological preparation, planting green manure crops, the spraying and plowing. This solution is not efficient enough.

The technical result - the reduction of costs and improving the efficiency of the method.

The technical solution of the declared object is that unlike the prototype, the site is contaminated with oil, water and 0.1-0.2% aqueous solution of para-aminobenzoic acid, when dissolved in hot water which is injected the stevia plant in the amount of 0.2% and after cooling the solution to 20-15 degrees add a biological Baikal Em-1 in a concentration of 1:100, and after 2-3 weeks seeded culture of amaranth and the phase of branching re watering the same mixture.

The method is as follows.

Infected oil the soil is irrigated with a solution of the PABA (para-aminobenzoic acid) in a concentration of 0.1-0.2%.

PABA is known as reparagen, shall be considered as genetically significant connection, in stimulating�stravitelne processes in cells. Involved in the synthesis of folic acid, normalizes metabolism in the connective tissue. In this technical solution is stabilized and restored damaged microflora of the soil through the effects of PABA on the microflora.

PABA is a crystalline substance, sparingly soluble in cold water, and at a temperature of 70-80°C dissolves well. PABA is considered a reverse mutator and how phenotypic activator PABA has a broad impact on different taxonomic units: plants, animals, insects, microorganisms.

PABA is the growth factor for many bacteria species, including those contained in a biological Baikal EM-1.

PABA - vitamin H - is a colorless, crystalline substance used as a growth factor for microorganisms. Connecting with enzymes, it increases the energy of enzymatic catalysis at certain stages of ontogenesis, thus according to genotype additional resistance, formability and productivity.

To revitalize the land and restore its fertile soil (humus), you can use biocomposites containing symbiotic Association of bacteria (Baikal EM-1). The use of technologies of living systems" for sustainable human activities allows not only to solve the problems associated with restoring e�another healthy soil fertility.

Effective microorganisms biological preparation Baikal EM-1, containing more than 80 different microorganisms is a sustainable community is physiologically compatible and complementary beneficial microorganisms responsible for the process of regeneration, giving the power of life.

Microbiological fertilizer Baikal EM-1 is an aqueous solution consisting of a consortium of lactic acid and photosynthetic bacteria able to fix atmospheric nitrogen, yeast, biologically active metabolic products of microorganisms.

The principal difference of the preparation Baikal EM-1 from other microbial agents is its multi-component nature, without harm to humans, animals and the whole soil microflora.

The use of this biological product allows to solve the problems associated with natural soil fertility, prevention of environmental pollution. Baikal EM-1 provides waterproof and breathability of the soil to a depth of 60-80 cm

Thanks to inclusion in the toxic soil of the biological product are accelerated several times, processes, humus formation within 2-3 weeks.

Usually for stimulation of microorganisms in the solution add sweets: jam, honey, sugar.

In contrast to known methods in the proposed facility uses the stevia plant (Stevia rebaudiana) as a sweetener rastitelnog� origin. Stevia leaves 10-15 times sweeter than sugar. In stevia contains many antioxidants - quartzetine, rutin, minerals - calcium, phosphorus, potassium, zinc, chromium, magnesium, selenium, copper and vitamins A, b, C, and E. in Addition, contained 53 active substances (including stevioside), contribute to the revival and activity of microorganisms.

Upon dissolution of the PABA powder in hot water, is introduced stevia plants at 0, 2% of the total quantity of prepared solution of PABA. After cooling the solution is further added microorganisms preparation Baikal EM-1 in an amount of 1:100. Cooling of the solution to a temperature of 20-25 degrees due to the creation of favourable conditions for microorganisms of a biological Baikal EM-1.

Such a mixture using PABA, sweetened Stepney enhances the activation of microorganisms Baikal EM-1 and within 2-3 weeks significantly reduced the amount of petroleum hydrocarbons in the soil. The parameters of the method (2-3 weeks) is attributable to the activation of microorganisms in soil using specified biological products, PABA dissolved in the mixture with the mitigation of stevia plants. This speeds up the process of homeopathya.

After the improvement of soil fertility seeded culture of amaranth that is resistant to the toxicity of the soil and has high sorption properties to absorb heavy metals.

In phase �of evlenia to stimulate the growth of amaranth are forced to re-watering at the same concentration, which provides both the purification of soil from oil products.

Example 1. Prepared working fluid PABA 100 g of powder per 10 liters of water with a temperature of 80°C.

In hot water lowered the stevia leaves in an amount of 200 g In the absence of fresh leaf preparations were used stevia, which has in any pharmacy. In this case, was applied 20 ml of a solution of stevia per 10 liters of liquid.

Prepared simultaneously a solution of a biological Baikal EM-1 at the rate of 1 part to 100 parts water, i.e. 100 g of a biological product per 10 liters of water. After cooling of the solution of PABA to 20-25°C was mixing the two solutions, the sum of which amounted to 20 liters. This amount of solution irrigated land, oiled size 10 m2.

Example 2. The working solution was prepared for another land with an area of 100 m2. The number of prepared mixture solution was 200 liters.

Unlike example 1, the culture of amaranth was sown on irrigated land after 3 weeks, and watered the same mixture in the phase of branching.

The results of the experiments are summarized in the table

After analyzing the data given in the table, it can be concluded that irrigation of contaminated soil-aminobenzoic acid in a mixture of vegetable substances stevia and biological Baikal EM-1 can significantly reduce with�Argania of petroleum hydrocarbons in the soil.

Method of reproduction of oil contaminated lands, including the introduction of biologics, seeding of plants with a high sorption capacity, characterized in that conduct irrigation water 0,1-0,2% solution of para-aminobenzoic acid, which when dissolved in hot solution was added the leaves of the plant stevia in an amount of 0.2%, and after cooling the solution to 20-25°C was added a biological Baikal EM-1 in a concentration of 1:100, and after 2-3 weeks after watering seeded culture of the amaranth, and the phase of branching are forced to re-watering at the same concentration.



 

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1 tbl, 1 ex

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