RU2729366C1 - Method of processing of bark and wood wastes, bioreactor and process line for implementation of method - Google Patents

Abstract

FIELD: biotechnology.SUBSTANCE: group of inventions relates to environmental and agricultural biotechnology, specifically to recycling and processing of material of bark separation process: bark and wood waste (BWW) of pulp-and-paper and woodworking industries to produce organic fertilizer. Method of processing bark and wood waste is carried out by introduction into bark and wood mass of activating solution containing biogenic elements limiting the biodegradation process and a community of microorganisms having cellulolytic and ligninolytic activities, as well as aeration of medium with atmospheric air. Process is ensured by application of the process line including the bioreactors immersed into the bark and wood mass, which are located in the form of a network and connected with pipelines, bioreactors are cylindrical perforated reservoirs equipped with a supply pipes system, through which the activating solution is periodically supplied and performs aeration, and the fluid phase formed as a result of processing, which is a liquid biofertilizer, is periodically pumped out from the inside of the bioreactor.EFFECT: providing the possibility of processing of bark and wood wastes in the bark and wood mass, multiple acceleration of processes of BWW biodecomposition and conversion of its mass into useful products – liquid and solid organic fertilizers.6 cl, 3 dwg, 3 tbl

Description

The group of inventions relates to the field of environmental and agricultural biotechnology, namely, to the disposal and processing of material from a bark heap - bark and wood waste (BWW) of pulp and paper and woodworking industries to obtain liquid and solid organic fertilizers.

Wood waste is one of the most common types of industrial waste in Russia. Since they are valuable carbonaceous raw materials, rational ways of using them are necessary. Currently, many bark dumps contain tens of millions of cubic meters of bark and wood waste, which are little used to obtain marketable products or to extract energy, but are objects of accumulated environmental damage, the environmental hazard of which to the environment consists in acidification of soil and water with non-neutralized acids - decomposition products of BWW , the entry of additional carbon sources into water bodies, contributing to water bloom, in a tendency to fire.

In the bark heaps, due to the openness of the system, there are natural processes of biodegradation and humification, but these processes are very long. As the results of our research have shown, these processes are limited by the low content of a number of biogenic elements (N, P, Mg, S) and by other factors, such as sealing and deep anaerobiosis of the watered underlying layers, which practically leads to their conservation and stoppage. biodegradation. Obviously, in this state, BWW material can be stored for hundreds of years without being processed into soil. And the overlying, later layers are more susceptible to biodegradation. (Maksimov A.Yu., Maksimova Yu.G., Shilova A.V., Kolesova O.V., Simonetti G. Investigation of the properties and microbiological composition of bark and wood waste from a bark dump in Krasnokamsk // Bulletin of PNRPU. Chemical technology and biotechnology. - 2018. - Issue 4. - S. 98-112.).

Common methods of disposal of material from bark heaps and other wood waste are their use as a fuel for energy production, as well as pyrolysis to obtain charcoal or combustion for disposal without energy production (US Patent 4235174, IPC: F23G 5/02, F23G 5/04 , F23G 5/46, publ. 25.11.1980. Patent RU 64209 IPC: С10В 1/04, publ. 27.06.2007. Patent RU 171632, IPC: F23B 10/00, F23B 30/10, F23G 5/24, F23H 3/02, F23H 9/02, publ. 07.06.2017. Patent RU 2654664, IPC: F23G 5/16; F23G 7/06, publ. 05.21.2018). However, only dried wood material is well suited as a fuel for energy production. Most of the bark heaps are made of material accumulated over decades, partially oxidized, moist, and even in a dried state have a low heat transfer. The use of pyrolysis and combustion methods in order to eliminate material from bark dumps leads to irrational use of a valuable organic resource, high energy costs and air pollution.

Known methods of using wood waste to obtain composite materials for various purposes (Patent RU 2515839, IPC: C08L 97/00, publ. 05/20/2014. US patent 10227460, IPC: C08J 5/00, publ. 03/12/2019). However, to obtain high-quality materials, raw materials of constant composition are required, which are not subjected to significant natural oxidative degradation and biodegradation, and without heterogeneous impurities. Not fresh material of bark piles is not suitable for obtaining high-quality composites.

Also known are methods for processing organic waste, including wood waste, by composting and accelerating the natural processes of their biodegradation in containers, pits, heaps or reactors of a capacitive type in a limited volume. Some of these methods involve mixing and two-component composting of wood waste with faecal waste from animal husbandry (manure, poultry droppings) or anthropogenic (domestic wastewater or their sludge), which significantly speeds up the composting processes by adding a source of limiting natural biodegradation of biogenic elements, the amount of which in wood waste is low (for example, nitrogen), and also due to the presence of fermenting microflora (Patent RU 2126779, IPC: A23K 1/00, C05F 9/00, publ. 27.02.1999. Patent RU 2186048, IPC: C05F 11/00 , C05F 3/00, publ. 27.07.2002. Patent SU 1733433, IPC: C05F 11/00, publ. 15.05.1992).

The disadvantages of these methods are the need for costs for excavation work and the fact that the amount of processed wood waste is limited by the volume of the container or site for processing. In the case of co-composting with faecal waste, large costs are associated with transporting both components to the composting site. It is also known that the processes of biological processing are long-lasting, which, together with a limited volume, leads to low productivity of this technology and the insignificance of its use in relation to pulp-and-paper mills containing millions of cubic meters of waste.

The closest in technical essence to the claimed one is a method for processing a bark dump (patent RU 2520022, IPC: C05F 11/00, publ. 20.06.2014 Bull. No. 17), according to which sewage sludge (WWS) of treatment facilities is introduced into the formed bark dump, containing, wt. %: humidity 92-96; mass fraction of organic substances 62-66; mass fraction of total nitrogen 5.6-7.3; mass fraction of total phosphorus (P ₂ O ₅ ) 4.8-6.5; heavy metals 0.02-2.0; residual oil 0.015-0.25; pH 6.8, in the ratio of bark: reagent (WWS), respectively 8: 2, followed by aeration of the bark dump with atmospheric air, while the drainage water of the bunker dump is used as a diluent for the reagent, and to obtain organic fertilizer, the process of pumping the body of the bump with reagent and air is repeated repeatedly ... The WWS is injected into the dump from the mixer along a rectangular grid of injection wells equipped with perforation pipes for injecting the solution, as well as subsequent pumping of the wells using a compressor with atmospheric air, while at the base of the dump there is a trench with a protective dam connected by a pipeline through a pump to the third inlet of the mixer ... The patent also describes a tank-type reactor, the volume of BWW processing in which is limited by the volume of the reactor.

The disadvantages of this method are the use of sewage sludge from the domestic sewage system, which is not safe in sanitary, hygienic and environmental terms, and also provides for the costs of transporting this waste to the disposal site of the bunker dump, the lack of the possibility of accurate regulation of the amount of biogenic elements necessary to accelerate biodegradation, collection drainage water in the drainage trench, lack of liquid organic fertilizer production, lack of a mechanism for averaging recirculation and mixing of the liquefied phase along the height of the dump.

Also known from the prior art is a tower bioreactor (patent RU 2019526, IPC: C02F 3/12, published on September 15, 1994), which includes a cylindrical body (K), an aerator with an aeration pipe, a cylindrical annular clarifier with a conical bottom and power slots, waste injection devices and removal of purified water, equipped with a system of pumps and pipelines for circulation of the sludge mixture and input of the reagent, (K) in the lower part, equipped with lower and upper coaxially located conical diaphragms with central holes and a jet diffuser, on (K), under the sludge slots of the settler, installed an annular reflector, a wastewater inlet device is located in the lower part of K, and the sump is built-in and located on the periphery, with its cylindrical part it forms the neck of the bioreactor with exhaust gases removal and is equipped with holes with gates for circulation of the sludge mixture and a cylindrical coaxial semi-submersible baffle that creates an air-separating annular space You, the aerator can be jet or air-lift, and the air-lift aerator can be provided with a coaxially located casing in the form of a pipe. This tower bioreactor is taken as a prototype for the inventive bioreactor used in the implementation of the inventive method. The disadvantages of the tower bioreactor, eliminated by the inventive bioreactor, are: limitation of the volume of the processed material, in which the biodegradation processes take place, by the internal volume of the reactor; the possibility of processing only liquid waste, the lack of the possibility of using a reactor for the biodegradation of solid waste, such as BWW.

The closest in technical essence to the claimed one is the technological site (patent RU 2520022, IPC: C05F 11/00, publ. 20.06.2014 Bull. No. 17) for processing and disposal of a boulder dump, including the following equipment installed in series and connected by pipelines with valves: mixer for preparation of the reagent, connected by the first inlet to the reservoir for the diluent of the reagent, the second inlet to the reservoir with the WWS, and the outlet to the pumping station through the compressor to the system of wells installed in the body of the bunker, for example, along a rectangular grid of injection wells equipped with perforation pipes for pumping the reagent, as well as subsequent pumping with the help of a compressor of the wells with atmospheric air of the body of the bunker dump, while at the base of the bunker dump a trench is made with a protective dam connected by a pipeline through a pump to the third inlet of the mixer.

The disadvantages of this technological site, eliminated by the claimed invention, are: the use of wastewater, which is unsafe from the point of view of sanitary standards; the need to locate the dump near the source of domestic wastewater, or the cost of transporting the latter; lack of regulation of the composition of nutrients required for biodegradation; the absence of a process for obtaining liquid biofertilizer, the introduction of a reagent containing sewage sludge through perforated pipes without uniform distribution and averaging over depth.

The technical result achieved by the implementation of the present invention is to ensure the processing of bark and wood waste in the body of a bark dump, multiple acceleration of the processes of biodegradation of BWW and the transformation of its mass into useful products - liquid and solid organic fertilizer with low costs for the use of additional materials.

This result is achieved by the fact that biological destruction and processing of BWW takes place inside the body of the dump, without removing them, using open bioreactors of a new type, creating a zone of accelerated biological processing; optimization of the composition of the biodegradation medium by the introduction of limiting biogenic elements into the thickness of the dump in the form of an activating solution, which is a mixture of chemical compounds balanced in the content of biogenic elements and the introduction of communities of microorganisms - biodegradants of BWW, as a result of which the material of the dump is processed into a solid organic fertilizer with the formation of a liquid organic fertilizer, which must be pumped out and transported to the place of its use.

The technical result is achieved using a method including obtaining an activating solution balanced in terms of the content of biogenic elements - nitrogen, phosphorus, potassium, magnesium, microelements, as well as including communities of microorganisms-biodestructors of BWW, introducing an activating solution into the thickness of the bunker dump through bioreactors with a perforated wall (which repeatedly accelerates the process of biodegradation), periodic aeration of the material of the bunker dump through bioreactors with a perforated wall, periodic pumping of the liquid biofertilizer formed as a result of accelerated biodegradation from the bioreactor tank.

The method is carried out by means of a technological line for processing and disposal of a bunker dump, which includes the following equipment installed in series and connected by pipelines with valves and filters: a bunker-mixer for preparing an activating solution, connected by an outlet through a reversible pump to a system of bioreactors installed in the body of a boulder dump in the form of a hexagonal or rectangular networks, a compressor for aeration, also connected with the outlet to the bioreactor system through pipelines, a receiving hopper for collecting the liquefied phase, which is a liquid biofertilizer, connected to the bioreactor system through a reversible pump. The bioreactor system includes at least one bioreactor, and the maximum number of bioreactors is not limited.

The bioreactor used in the production line is a cylindrical structure made of light, durable corrosion-resistant materials, with a perforated body, an inner pipe and pipes for supplying the activating solution from the mixing hopper and air supply, as well as removing the liquefied phase into the receiving hopper.

The above set of essential features allows to obtain the following technical result: multiple acceleration of the processes of BWW biodegradation, processing and disposal of the bark dump to obtain solid and liquid organic fertilizers directly at the storage site, in the body of the bark dump.

The invention makes it possible to obtain organic fertilizer during the processing of organic waste, to exclude the source of air pollution resulting from spontaneous combustion of the bark dump array, and also to clean and reclaim the area occupied by the bark dump body.

The invention is illustrated in the drawings, where FIG. 1 shows a diagram of a bioreactor for processing a bark dump; A-A - sectional view of the bioreactor;

in fig. 2 - diagram of the connection of the bioreactor to the technological line of processing and disposal of the dump;

in fig. 3 is a diagram of a technological line with an arrangement of a bioreactor system on a dump.

Legend:

1 - outer perforated wall of the bioreactor housing;

2 - holes in the bioreactor body;

3 - inner pipe;

4 - tube for activating solution supply;

5 - aeration tube;

6 - bioreactor cover

7 - bioreactor,

8 - mixing tank,

9 - valve,

10 - filter,

11 - reversible variable pump,

12 - pressure gauge,

13 - reversible variable compressor,

14 - receiving hopper

15 - supply of an activating solution;

16 - removal of the liquefied phase - liquid biofertilizer

The bioreactor (Fig. 1) is a cylindrical container, the outer walls 1 of which are made with perforations. Perforation of the outer wall 1 of the bioreactor housing is equidistant from each other in height and around the circumference of the bioreactor, circular holes 2. Inside the cylindrical vessel of the bioreactor, an inner pipe 3 without perforation is installed in the center, the supply pipe 4 is laid between the wall 1 of the bioreactor housing and the inner pipe 3. Free the end of the supply pipe 4 opens into the space of the cylindrical tank of the bioreactor. The second supply pipe 5, intended for aeration, is also laid in the space between the outer wall 1 of the bioreactor and the inner pipe 3, and the end of the pipe 5 through the bend goes into the center of the pipe 3 in the lower part of the bioreactor; the upper part of the bioreactor is closed with a cover 6.

The bioreactor (Fig. 1), is mounted in the body of the bunker dump and acts as follows: an activating solution is supplied through the supply pipe 4 to accelerate biodegradation, it is averaged by stirring in the internal volume of the bioreactor and through holes 2 in its body it enters the body of the bunker, which ensures the formation in the body of the dump around the bioreactor there is a zone in which a multiple acceleration of biodegradation occurs. Through the supply pipe 5, atmospheric air is periodically supplied to the lower part of the bioreactor and its ascending flow in the internal volume of the pipe 3, creates the effect of airlift mixing, and through the holes 2 in the bioreactor body aeration of the zone of accelerated biodegradation occurs, which complements the anaerobic processes of biodegradation by faster - aerobic ones. Also, the air flow is used to purge the bioreactor from the inside in case of blockage of the holes. The inner tube 3 of the bioreactor serves for homogenization, mixing and uniform distribution of the activating solution. The liquid phase formed during the biodegradation of BWW in the area of the bunker dump outside the bioreactor is a liquid biofertilizer, which, by diffusion, fills the internal volume of the bioreactor and is then pumped out of the internal volume of the bioreactor by reversing feed through tube 4 or 5. After the bioreactor has been operating for 6 months, the material surrounding the bunker dump is a solid biofertilizer.

The bioreactor is made of polymeric or composite materials, such as polypropylene, polyethylene, polyvinyl chloride, polyacrylates, composite materials based on epoxy resins and reinforcing fibers, etc. This feature of the bioreactor design provides the following advantages:

- lightness of the structure with a sufficiently high strength, which is important when used on bunkers due to the looseness, mobility and heterogeneity of the material of the bunker, which limits the use of heavy metal or other structures;

- ease of installation of the structure, which does not require the use of heavy equipment, which is also important due to the looseness, mobility and heterogeneity of the material of the bunker blade;

- corrosion resistance of the structure, which is important in view of work in conditions of humidification and the presence of dissolved salts;

- mobility, the ability to quickly reinstall as needed to a neighboring site.

The technological line for processing the bark dump (Fig. 2) includes the following elements: at least one bioreactor 7 installed in the body of the bark dump; a bunker-mixer 8 for preparing an activating solution, equipped with a stirrer for forced mixing, connected through a shut-off valve 9, a filter 10, a reversible variable pump 11 and a valve equipped with a pressure gauge 12 to the supply pipe 4 of the bioreactor; a reversible variable compressor 13 equipped with a filter 10 at the inlet and connected with an outlet through a valve 9 equipped with a pressure gauge 12 to the inlet of a tube 5 for aeration of the bioreactor; receiving hopper 14 for collecting liquid biofertilizer, connected through pipelines equipped with valves 9, filter 10, reversible variable pump 11, manometer 12, to tubes 4 and 5 of the bioreactor.

Several bioreactors 7 in the form of a hexagonal or rectangular network with a pitch from 3 to 10 m can be connected to one mixing bin 8 for preparing an activating solution through a reversible pump 11 and piping, as shown in Fig. 3. The number of bioreactors connected to the technological line depends on the processed area of the dump. It is recommended to place 1 bioreactor on 12-100 square meters depending on the desired processing speed. All pipelines for the supply of the activating solution and air, as well as the discharge of liquid biofertilizer are equipped with filters 10.

The technological line for processing the bark dump (Fig. 2) operates as follows.

The activating solution is supplied to the bioreactor 7 from the mixing bunker 8, using a reversible pump 11, through a pipeline equipped with a shut-off valve 9, connected to the supply pipe 4 of the bioreactor. To prepare the activating solution, its components are fed into the mixer bunker 8 in dry form or in the form of concentrates, as well as water for dilution from an external water supply or water tank. All pipeline outlets are equipped with shut-off valves 9, filters 10 and pressure gauges 12. Atmospheric air for aeration is taken from the external environment, filtered through a coarse filter and fed by a reversible adjustable compressor 13 into the tube 5 for aeration of the bioreactor. The liquefied phase from the bioreactor 7 is periodically pumped out as the BWW is processed by reversing feeding and switching the corresponding valves 9 to the receiving hopper 14.

The method for processing bark and wood waste is as follows.

In the bunker-mixer 8, an activating solution containing mg / l is prepared by dissolving in water: N - 120-150; P - 20-50, K - 80-160; Mg - 15-30; Ca - 50-150; Fe - 3-5; Cu - 0.5; Mn 0.5; Zn - 0.5; B - 0.5; community of microorganisms - biodegradants of KDO, with cellulolytic and ligninolytic activities 10 ¹⁰ CFU / l; pH - 7.5-8. Through a pipeline through a reversible pump (11), the ready-made activating solution is periodically fed into the bioreactors 7 immersed in the body of the bunker, while the activating solution is averaged and distributed through the holes 2 in the outer wall 1 of the bioreactor in the body of the bump, which creates a favorable environment for activation and multiple acceleration biodegradation process. Also, periodically, the medium is aerated by blowing the BWW with atmospheric air, which is pumped into the reactor 7 by compressor 13. To prevent clogging of the reversible pumps (11), all pipelines for supplying the activating solution and air, as well as for removing liquid biofertilizer are equipped with filters 10. As the biodegradation proceeds, a liquid biofertilizer, which is periodically pumped out of the bioreactor tank through a reversible pump 11 into the receiving hopper 14, and the main part of BWW is converted into solid biofertilizer.

EFFECT: acceleration of BWW biodegradation processes by 1000 or more times, processing and utilization of a bark dump to obtain solid and liquid organic fertilizer directly at the storage site, in the body of a bark dump - is achieved by activating the growth of aboriginal microflora by adding the necessary biogenic elements that are absent in the material of the bark dump in the required amount, the introduction of the community of cultures - biodestructors, as well as due to aeration and partial replacement of slow biodegradation processes, characteristic of anaerobic processes, by fast aerobic processes. Processing of BWW in the body of the dump, without extraction and the simultaneous use of a network of many easily assembled bioreactors, creating around itself a zone of accelerated biodegradation and humification of BWW, ensures the simultaneous continuous processing of large volumes of the dump, which compensates for the duration of the process and makes it technologically advanced.

As a result of the activated biodergation process, the BWW material is processed to form an organic fertilizer, which can be used in greenhouse and field agriculture, as well as in home farming.

To activate microbiological processes, once every 1-4 days, the bioreactors are pumped with atmospheric air at a rate of 30 m ³ / h / 1 m ³ of the bioreactor volume for 30-60 minutes.

The introduction of an activating solution significantly increases the water content of the upper layers of the bark dump, which dry up in the hot season, which significantly reduces its fire hazard.

The method is illustrated by the following examples:

Example 1.

BWW processing in the presence of an activating reagent (mineral salts).

Processing of bark-wood waste of a bark dump is carried out in laboratory conditions in Erlenmeyer flasks with a volume of 300 ml, into which 200 g of BWW material are placed and 50 ml of sterile activating solution containing, mg / l: N - 100-150; P - 20-50, K - 80-160; Mg - 15-30; Ca - 50-150; Fe - 3-5; Cu - 0.5; Mn 0.5; Zn - 0.5; B - 0.5, pH - 7.5-8.

Variants of the composition of the activating solution, mg / l:

1) N - 100; P - 20, K - 80; Mg - 15; Ca - 50; Fe - 3; Cu - 0.5; Mn 0.5; Zn - 0.5; B - 0.5, pH - 7.5.

2) N - 150; P - 50, K - 160; Mg - 30; Ca - 150; Fe - 5; Cu - 0.5; Mn 0.5; Zn - 0.5; B - 0.5, pH - 7.5.

3) N - 100; P - 20, K - 80; Mg - 15; Ca - 50; Fe - 3; Cu - 0.5; Mn 0.5; Zn - 0.5; B - 0.5, pH - 8.

4) N - 150; P - 50, K - 160; Mg - 30; Ca - 150; Fe - 5; Cu - 0.5; Mn 0.5; Zn - 0.5; B - 0.5, pH - 8.

5) N - 100; P - 20, K - 80; Mg - 15; Ca - 50; Fe - 3; Cu - 0.5; Mn 0.5; Zn - 0.5; B - 0.5, pH - 8.5.

6) N - 150; P - 50, K - 160; Mg - 30; Ca - 150; Fe - 5; Cu - 0.5; Mn 0.5; Zn - 0.5; B - 0.5, pH - 8.5.

The cultivation is carried out at room temperature for 6 months. Aeration is carried out by periodic blowing with atmospheric air at a rate of 30 l ³ / h / 1 l of the volume of the reaction medium for 30-60 minutes.

The multiple acceleration of the process of BWW processing with the addition of mineral salts and aeration is due to the fact that the introduced additives compensate for the deficiency of necessary biogenic elements in BWW and activate microbiological processes of biodegradation in it, and periodic aeration leads to the addition of slow anaerobic biodegradation processes with fast aerobic ones. The intensity of BWW processing is evidenced by a decrease in dry biomass and an increase in the amount of extracted organic compounds. The experimental results are shown in table. 1. According to the loss of dry mass, the biodegradation process is accelerated by a factor of 1000 or more. The resulting liquefied phase is a liquid biofertilizer, and the processed BWW material is a solid biofertilizer.

Example 2.

Processing of BWW by communities of microorganisms-biodegradants of BWW isolated from the upper layers of the bark dump.

To isolate communities of microorganisms-biodestructors of BWW, use the mineral medium N (Maksimov A.Yu. The effect of nitriles and amides on the growth and nitrile hydratase activity of the Rhodococcus sp. Gt1 strain // Applied Biochemistry and Microbiology. 2003. No. 1. P. 63-68, p. 64) with the addition of BWDW washed with distilled water and sterilized in an amount of 10 g / l.

Biodegradation of BWW of bark dump is carried out as in example 1. Flasks of pre-sterilized BWW samples are inoculated with communities of microorganisms previously isolated from the upper layers of BWW of bark dump at a concentration of 10 ¹⁰ CFU / l, containing cellulolytic, lignolytic and carbohydrate fermenting bacteria, for example, representatives of Cellulomonas, Streptomices and Lactobacillus. The intensity of biodegradation processes is evidenced by a decrease in dry biomass and an increase in the amount of extracted organic compounds.

Aeration is carried out by blowing atmospheric air at a rate of 30 L ³ / h / 1 L of the volume of the reaction medium for 30-60 hours. The cultivation is carried out at room temperature for 6 months. The experimental results are shown in table. 2. According to the loss of dry mass, the biodegradation process is accelerated by 1000 and more times.

Example 3.

BWW processing using an open-type bioreactor

BWW processing is carried out at the BWW storage site or in the body of a bark dump using a bioreactor (Fig. 1). A solution containing mg / l is used as an activator: N - 150; P - 50, K - 160; Mg - 30; Ca - 150; Fe - 5; Cu - 0.5; Mn 0.5; Zn - 0.5; B - 0.5, pH - 8.0, the community of microorganisms - biodegradants of BWW, with cellulolytic and ligninolytic activities 10 ¹⁰ CFU / l; pH - 7.5-8.0. A periodic supply of the activating solution and aeration are carried out. The ratio of EDV: activating solution varies in the range of 30: 1-300: 1. Aeration is carried out by periodically blowing the bioreactor with air of 30 l ³ / h / 1 l for 6 months.

Aeration is carried out by blowing with atmospheric air at a rate of 100 l ³ / h for 30-60 minutes. Biodegradation is carried out within 6 months. The experimental results are shown in table. 3.

Claims (6)

1. A method for processing bark and wood waste, according to which an activating solution is introduced into the bunker dump, followed by aeration of the bark dump with atmospheric air, while the process of pumping the bark dump body with the activating solution and air is repeated repeatedly, characterized in that the activating solution containing mg / l: N - 120- 150; P - 20-50, K - 80-160; Mg - 15-30; Ca - 50-150; Fe - 3-5; Cu - 0.5; Mn 0.5; Zn - 0.5; B - 0.5, pH - 7.5-8.0 and the community of microorganisms - biodegradants of BWW, with cellulolytic and ligninolytic activities, are fed to the bark dump through a technological line containing at least one bioreactor buried in the body of the bark dump, after which periodically aerate BWW in the processing zone by pumping atmospheric air and, as it forms, periodically remove liquid fertilizer. 2. A technological line for implementing the method according to claim 1, comprising at least one bioreactor immersed in the body of the bump, equipped with a system of supply pipes through which the activating solution is periodically supplied and aerated, and the liquefied phase resulting from processing, which is a liquid biofertilizer , periodically pumped out from the inside of the bioreactor, a bunker-mixer for preparation of an activating solution, equipped with a stirrer for forced mixing, connected through a shut-off valve, a filter, a reversible variable pump and a valve equipped with a pressure gauge to the bioreactor supply pipe, a reversible variable compressor equipped with a filter on inlet and connected by outlet through a valve equipped with a pressure gauge to the inlet of a tube for aeration of the bioreactor, a receiving hopper for collecting liquid biofertilizer, connected through pipelines equipped with valves, a filter, a reversible variable pump, a manometer, to tubes b ioreactor. 3. The technological line according to claim 2, characterized in that several bioreactors are connected to the mixing hopper, located in the form of a hexagonal or rectangular network. 4. A bioreactor for implementing the method according to claim 1, which is a cylindrical container, the outer walls of which are made with perforations, inside of which an inner pipe without perforation is installed in the center, the supply pipe is laid between the wall of the body and the inner pipe, while the free end of the supply pipe is open into the space of the cylindrical tank, the second supply pipe, intended for aeration, is also laid in the space between the outer wall and the inner pipe, and the end of the pipe through the bend goes into the center of the pipe in the lower part of the bioreactor, while the upper part of the bioreactor is closed with a lid. 5. The bioreactor according to claim 4, characterized in that the perforation of the outer wall is equidistant from each other along the height and around the circumference of the cylindrical container, round holes. 6. Bioreactor according to any one of paragraphs. 4, 5, characterized in that it is made of polymeric or composite materials, such as polypropylene, polyethylene, polyvinyl chloride, polyacrylates, composite materials based on epoxy resins and reinforcing fibers, etc.

Images