WO2019160451A2

WO2019160451A2 - System for thoroughly purifying water for aquaculture tanks

Info

Publication number: WO2019160451A2
Application number: PCT/RU2019/000097
Authority: WO
Inventors: Ласар Руждиевич ТАУФИК
Original assignee: Ласар Руждиевич ТАУФИК
Priority date: 2018-02-16
Filing date: 2019-02-15
Publication date: 2019-08-22
Also published as: WO2019160451A3; RU2668368C1

Abstract

The invention relates to devices for purifying water in aquaculture tanks. The technical result of the invention is an increase in the degree of water purity and an increase in the lifespan of a biological filter medium. A system for thoroughly purifying water for aquaculture tanks includes, arranged in succession, a primary mechanical water purification compartment(s) in the form of a tank filled with separating lamellae arranged in sections on a false bottom, a compartment(s) for biologically purifying water in a fluidized bed, said compartment being in the form of a tank filled with a biological filter medium disposed on a false bottom, wherein a device for aerating the biological filter medium is disposed above the false bottom and below the layer of a biological filter medium, and a secondary fine mechanical water purification compartment(s) in the form of a tank filled with separating lamellae having a smaller clearance therebetween and being arranged in sections above a false bottom; furthermore, all of the tanks are oriented vertically and have a height that is 3-5 times greater than the equivalent diameter of the cross section of the tank, in each section the false bottom is in the form of a perforated plate, a compartment that is free of equipment is disposed below the false bottom for dirty water, collectors for catching mechanical impurities are disposed beneath each tank, and purified water outlets are disposed at the top of each tank.

Description

5 Title of invention

Integrated aquaculture pool water treatment system

Technical field

The invention relates to the field of breeding aquatic animals, and in particular to devices for treating water in aquaculture tanks. state of the art

Currently, many water purification devices for growing aquaculture are known. In most cases, they are part of closed water supply (UZV) installations and are sequentially placed mechanical and biological filters for purification. The installation of closed water supply for

reproduction and cultivation of aquatic organisms, containing a device for water purification, including a mechanical water purification filter, a biological purification unit, a thermoregulation unit with a temperature sensor, an aeration system consisting of a flute and an air atomizer [1].

20 It is also known a filtration device for swimming pools with fish, including a container divided by a number of partitions into a given number of chambers through which the water to be cleaned passes in a zigzag manner, each chamber is filled with different filtering

elements or bio-loading, water is supplied from the bottom up, and 25 at the exit from top to bottom, while the mechanical filter element is located in front of the biological [2]. The disadvantages of these devices is the insufficiently high degree of water purification and the reduced resource life of the bio-load due to its silting.

The closest in combination of essential features to the claimed invention is a comprehensive cleaning system aquaculture pools, including a mechanical water purification device - a drum filter, a biofilter with bio-loading and aerator, as well as a denitrifier, while the location of the upper water levels in the drum filter, biofilter, denitrifier and line

5 suction pump are different [3]. The disadvantages of the method are:

- increased energy costs for maintaining the flow of water in the treatment system, which is associated in particular with the presence of a drum filter;

- insufficiently high degree of water purification, because drum

Micro-mesh filters allow over 45% of contaminants to pass through.

- reduced life of the bio-load due to siltation;

- secondary pollution of water with microparticles of bacterial sludge at the outlet of the biological treatment and denitrification devices.

- lack of ability to remove solids in from

15 biofilters.

The problem to be solved and the technical result achieved

The solved problem of the claimed invention is the elimination of the disadvantages of the above technical solution and the achievement of 20 technical result in relation to:

- increase the degree of water purification.

- increasing the life of the biogas;

- creation of constructive possibilities for removing mechanical impurities in the department of biological water treatment.

25

Disclosure of invention

The achievement of the specified technical result in the claimed invention is achieved through the implementation of the totality

essential features in the system of integrated water treatment in aquaculture basins, including sequentially located

at least one primary mechanical water treatment unit, representing a container filled with separation lamellas, which are arranged in sections on the raised bottom, while the size of the free gap between opposite surfaces

lamels (lei) is 20-50 mm,

at least one compartment for biological treatment of water in a fluidized bed (fluidized bed), which is a tank filled with bio-loading located on a raised bottom, above which a bio-loading aeration device is located under the bio-loading layer,

at least one compartment of the secondary fine mechanical water treatment, which is a container filled with separation lamellas, which are arranged in sections above the raised bottom, while the size of the free gap between the opposite surfaces of the lamella (s) is 12-20 mm,

at the same time, all containers are vertically oriented and have a height of 3-5 times the reduced diameter of the container cross-section, in each compartment the raised bottom is made in the form of a perforated plate, under the false bottom there is a compartment free of equipment for contaminated water,

at the bottom of each tank are conical sediment traps for catchers of mechanical impurities, and at the top of each tank are the outlets of water purified in this compartment, which are also made at the same level with vertical accuracy

up to ± 0.20 m.

For an unambiguous and more complete understanding of the description

The claimed invention further provides clarifications and disclosures of the concepts and terms used above, as well as a description

designs.

In the department of primary mechanical water treatment, the separation of mechanical particles - residues of feed, products

aquaculture activities. As a rule, these are particles up to 50 mm in size. Cleaning takes place on separation filters - in containers, sectionally filled with plate or tubular separation lamellas. The size of the free gap between the opposite surfaces of the lamella (lei) is 20-50 mm. The opposite surfaces of the lamella are meant if the lamellas are tubular or the opposite surfaces of adjacent lamellas, if the lamellas are lamellar. In this case, tubular lamellas can have a cross section in the form of a polyhedron, circle, ellipse. The given interval of sizes of the free gap between the opposite surfaces of the lamella (s) for filters of primary mechanical cleaning was found experimentally. For larger and smaller values specified

Interval cleaning efficiency decreases or the volume of the mechanical cleaning compartment increases.

In the department of biological treatment, the decomposition of organic particles of various nature is carried out with the simultaneous degassing of the resulting nitrogen oxides and carbon dioxide. Biological purification is carried out in a tank (biofilter) at the filling biological loading in a fluidized bed. The load is located above the perforated floor. The fluidized bed is realized due to distributed aeration by air while the purified water moves through the bed from the bottom up. In this case, the water flow has a laminar character. Distributed aeration is carried out, as an option, through a system of branched perforated tubes. In the process of biological treatment, biomass (bacterial mass) grows and dies. The dead biomass falls from the carrier and falls down to the false bottom and then through its perforation into the settling tanks, followed by removal from the filter. Thus, the technology of self-cleaning bio-loading is implemented. Under the raised bottom there is a free space for water to enter from the mechanical water treatment department and to organize a certain laminar flow regime. Water is supplied in laminar mode so as not to

to prevent the deposition of contaminants in the cone sumps. The water feed rate is determined from the ratio (0.1 -2.5) 1 O ⁴ * S m ³ / s, where S is the cross-sectional area of the biological device (filter) cleaning up. This ratio is determined empirically, taking into account the maintenance of the laminar nature of the flow of water at the inlet, in the process of moving water up through the bio-loading layer and leaving the biofilter. In this mode, the following processes are supported:

- biological treatment is effectively carried out,

- the separation of bacterial sludge particles from the carriers of the bio-load is effectively carried out.

- reduced the number of mechanical particles carried away by the stream further through the cleaning system,

- the particles of bacterial sludge fall down through the aerated bio-loading layer, to the false bottom and further to the conical sludge and Ki-ul about itel.

If the water supply rate is less than 0.1 x1 O ⁴ xS m ³ / s, then the productivity of the treated water is unacceptably reduced, if more than 2.5 ^s 10 xS m ³ / s, the required working volume of the biofilter significantly increases. The working volume should be understood as the volume

respectively occupied by biofuel. In this invention, the terms "fluidized bed", "fluidized bed" and "fluidized bed" have the same meaning.

An important technological element of the natural maintenance of the laminar regime of the water flow during its movement through the bio-load is the location of the outlets of purified water in each given compartment at the same level with vertical accuracy

up to ± 0.20 m. When this level is located at the level of the pool mirror with hydrobionts, the laminar regime in the cross section of the filters is established almost naturally. In addition, such a arrangement of the outlets of the treated / purified water allows minimizing the hydraulic resistance of the cleaning system due to the absence of level differences between units of equipment and thereby lowering the energy costs of maintaining the flow of water in the system. The most desirable is the alignment of the mirrors of the water surface of all units of the equipment of the cleaning system at one level, which is achieved by appropriate the location of the output levels of the purified / purified water from the filter tanks. However, for various constructive and

technological circumstances allowed vertical displacement of these levels up to ± 0.20 m, which does not lead to significant

energy losses. It should be noted that in subsequent departments the level of water output cannot be higher than in the previous ones.

Nevertheless, the thinnest particles of dead biomass (bacterial sludge) and the finest mechanical particles remaining after the first mechanical stage are carried away by the flow of water and get to the output of the biofilter. In practice, these are particles up to 20 microns in size. In the presence of such particles in the treated water, its disinfection is difficult, oxygen saturation and the increase in the mass of aquaculture slows down. Therefore, water after the biological treatment stage should

additionally clean.

Additional purification is carried out in the department of secondary fine mechanical water treatment. Here, fine mechanical particles and bacterial sludge particles are separated from water. This process is also carried out on a filter with separation lamellas, however, the size of the free gap between the opposite surfaces of the lamella (s) is 12-20 mm. The opposite surfaces of the lamella are meant if the lamellas are tubular or the opposite surfaces of adjacent lamellas, if the lamellas are lamellar. In this case, tubular lamellas can have a cross section in the form of a polyhedron, circle, ellipse. The indicated size gap of free clearance between opposite surfaces of the lamella (s) of the secondary mechanical cleaning filter was found empirically and depends on many factors - the type and amount of feed, cleaning performance, cleaning efficiency of the previous stages, etc. For larger and smaller values of free clearance, cleaning efficiency decreases or decreases it

purified water performance. In particular, if the distance between the walls of the lamellas less than 12 mm, they are fast

overgrowth with bacterial sludge and the ability to

self-cleaning, while increasing this distance over 20 mm, it is necessary to increase the total working volume of the mechanical filter. Under the working volume here should be understood the volume occupied by the sections of the separation lamellas.

Similarly to the design of the biofilter in the mechanical cleaning filters, the sections of separation lamellas are also located on the false bottom, which is a plate with perforations, the sizes of which correspond to the sizes of particles of mechanical contaminants that are separated on this filter. Under the raised bottom there is a compartment for

contaminated water is free space intended for the reception of purified water and organization

laminar regime of its current.

At each stage of cleaning, it is envisaged to remove mechanical impurities separated on the filters, which are removed from the filters through cone traps. These sumps are located at the bottom of the filters for free space for water inlet. It should be noted that usually in biofilters, for example, in the analogues described above, the bio-load is placed directly on the bottom of the filter tank. This is because such designs of the cleaning system do not allow the use of self-cleaning technology

bio-loading, therefore, they lack equipment for accumulation and removal of pollution. The design of the inventive system of integrated water purification of aquaculture pools provides for the implementation of self-cleaning bio-loading technology. In accordance with this, the removal of contamination of bacterial sludge from the biofilter is carried out through conical traps-traps.

All containers are vertically oriented and have a height of 3-5 times greater than the reduced diameter of the cross section of the container.

The latter is calculated based on the required water flow rate, which in turn is determined on the basis of a given cleaning system performance and a given degree of purity. On the basis of a given degree of purity of the purified water, the filling height of the filters and hence their height are additionally determined. In this case, the above ratio, found empirically, is taken into account. The lower value of the ratio determines the acceptable decrease in the degree of purification, exceeding the upper value does not increase the degree of purification.

The equipment of the cleaning stages is sequentially interconnected in the order of the sequence of these stages and placed on the suction line of the pump.

The cleaning / filter compartments can be made at the same time as a single design with partitions between which canals or communication pipes are placed through which the water to be cleaned flows. Also, the cleaning system can be made in the form of separate compartments of mechanical and biological treatment, which are interconnected by pipelines. In this case, the amount

each cleaning department is selected based on structural and technological feasibility. Since the amount of contaminants decreases as it is cleaned from compartment to compartment, the working volumes of the primary mechanical water treatment, biological water treatment and secondary fine mechanical water treatment departments are related to each other in the ratio (2-4) :( 4-6) :( 1-3 )

Materials for the manufacture of equipment according to the claimed cleaning system are structural steels and plastics. Filter housings can also be made of concrete.

Common with the prototype of the essential features of the claimed invention are:

- the presence of a mechanical water purification device,

- the presence of a biofilter with bio-loading and aerator.

Distinctive from the prototype, the essential features of the claimed invention or their characteristics are: - execution of the primary mechanical water treatment department in the form of a tank filled with separation lamellas, which are sections

located on the raised bottom, while the size of the free gap between the opposite surfaces of the lamella (s) is 20-50 mm, while at least one execution of such a separation is possible,

- the implementation of the department of biological water purification in the form of a tank filled with bio-loading, located on the false bottom, above which, under the layer of bio-loading is a device for aeration

bio-loading, while at least one execution of such a separation is possible,

- at least one compartment of the secondary fine mechanical water treatment, which is a container filled with separation lamellas, which are arranged in sections above the raised bottom, while the size of the free gap between the opposite surfaces of the lamella (s) is 12-20 mm,

- the execution of all containers vertically oriented, having a height of 3-5 times the reduced diameter of the cross-section of the tank, having a raised bottom in each compartment, made in the form of a perforated plate, under which there is a compartment free of equipment for the entry of contaminated water,

- the implementation of the bottom of the department of biological water purification conical sediment traps catchers of mechanical pollution,

- execution at the top of each capacity of the outputs of purified water in this compartment, which are also made at the same level with a vertical accuracy of ± 0.20 m.

These significant features are distinctive from the prototype, because each of them is not contained in the aggregate

essential features of the prototype, i.e. not present in the list of features carried out in the prototype and is not their

characteristic.

As already shown above, these distinctive from the prototype of the essential features, including their characteristics, ensure the achievement of the claimed technical result when using other essential features of the invention specified in the description.

Thus, it is shown that the set of essential features of the claimed invention, which allows to achieve the claimed technical result, differs from the set of essential features of analogues, prototype, as well as other known data sources, i.e. it is not known the use of this combination of essential features with the receipt of the claimed technical result. In other words, the claimed invention is not known from the prior art.

In the course of studying the prior art of integrated water purification systems for aquaculture pools, technical solutions were not identified,

the essential features of which individually or in any combination coincide with the distinctive essential features of the claimed invention and allow to achieve the claimed

technical result. Thus, the lack of fame of the influence of distinctive essential features

of the claimed invention to the claimed technical result.

It should also be noted that the use of the entire claimed combination of essential features, including the combination of distinctive features, to obtain the claimed technical result should not be explicitly for specialists from the prior art, since it is not a combination, modification or sharing of information contained in in the prior art and / or general knowledge of a specialist.

The effectiveness of the claimed technical result is achieved in the following modifications of the method, characterizing special cases of its implementation:

1. The inventive and described above system of integrated water purification of aquaculture pools, in which all treatment departments made combined and have in the upper part of the hole for overflow / discharge of treated water.

2. The system of integrated water purification of aquaculture pools according to p.

1, in which between adjacent containers is made

channel / pipeline for draining and draining water to the next compartment.

3. The inventive and described above system of integrated water purification of aquaculture pools, in which each cleaning department is performed separately.

4. The system of integrated water purification of aquaculture pools according to p.

3, in which the cleaning compartments are technologically interconnected by pipelines.

5. The inventive and described above system of complex water treatment of aquaculture pools, in which the working volumes of the primary mechanical water treatment, biological water treatment and secondary fine mechanical water treatment departments are related to each other in the ratio (2-4) :( 4-6) :( 1- 3).

6. The inventive and described above system of integrated water treatment of aquaculture pools, in which all water treatment departments are located on the line (s) of the water circulation support system to the pump.

A brief description of the drawings The description of the claimed method is illustrated by figures 1, 2 (fig 1, fig 2), which show the following notation:

1 - Department of primary mechanical water treatment,

2 - sections of the separation lamellas,

3 - Department of biological water purification,

4 - bio-loading, 5 - a device for aeration of bio-loading,

6 - false bottom

7 - Department of secondary fine mechanical water treatment,

8 - compartment for the supply of contaminated water,

9 - water outlet from the compartment,

10 - water inlet to the compartment,

11 - channel / pipe for draining and draining water to the next compartment,

12 - conical sediment traps.

ten

Embodiments of the invention

The claimed invention is a "System of integrated water purification of aquaculture pools" is carried out as follows.

15 Integrated water treatment system for aquaculture pools

involves the implementation of three successive stages of cleaning:

primary mechanical water treatment, biological treatment, secondary fine mechanical treatment. Accordingly, at each stage, at least one water treatment unit is performed. It is possible both 20 joint and separate execution of departments. A joint

execution involves the execution of all departments on a single platform or generalized capacity with partitions. In this case, water overflows between departments are carried out through special channels, drains or pipes 11. The primary compartment (filter)

25 of mechanical water treatment 1 is a container filled with separation lamellas, which are located in sections 2 on the raised bottom 6. Sections can be filled with tubular or plate lamellas. The size of the free gap between the opposite surfaces of the lamella (lei) is 20-50 mm. The compartment (filter) for biological treatment of water in the fluidized bed 3 is a container filled with bio-loading 4 located on the raised bottom 6. Above the false bottom in the lower part of the biological loading is a device for its aeration 5. The separation (filter) of the secondary fine mechanical water treatment 7 is a container filled with slats separation, which sections 2 are located on the raised bottom 6. The size of the free gap between the opposite surfaces of the lamella (lei) is 12-20 mm The working volumes of the filters 1, 3, 7 are related to each other as (2-4): (4-6): (1-3). The dimensions of the perforations in all false bottoms correspond to the size of the separated dirt particles. In all compartments under the raised bottom are made

compartments free of equipment for contaminated water 8. 8. Cone settling tanks 12 are located to trap the mechanical particles separated on the filters. At the top of each tank there are exits of water 9 purified in this compartment, which are made in one level with a vertical accuracy of ± 0 , 20 m. The entrances of the purified water 10 in each filter are located in the compartment for contaminated water.

Example 1

For the purification of water from the pool (s) with Clarium catfish, closed water supply units perform a complex purification system. The cleaning system consists of 3 sequentially arranged filters made on the same platform and connected by channels located between adjacent walls. Filter containers in shape are regular parallelepipeds with

square cross sections, their working volumes are correlated as 2: 4: 1 The compartments of mechanical cleaning are filled with lamellas 7/10 of the height of the compartments, the compartment with a fluidized bed is filled with floating bioloading by 55-70% of the working volume of the compartment, by the working volume is meant compartment volume from the raised bottom level to the upper water level in the compartment. The first filter is a primary mechanical water treatment filter and is designed to separate solids up to 50 mm in size. The filter contains sections of tubular separation lamellas with a reduced diameter of 50 mm. These sections are located on the raised bottom with perforations of 50 mm or more.

The second filter is a biological treatment filter, filled with bio-loading located above the raised bottom. Bio-loading represents hollow cylinders with a branched surface with a reduced diameter of 18 mm. The size of the perforations on the raised bottom is 15 mm. The third filter is a fine filter

mechanical water treatment and is designed to separate mechanical impurities up to 20 mm in size. The filter contains sections of tubular separation lamellas with a reduced diameter of 20 mm. These sections are located on the raised bottom with perforations of 20 mm or more.

All compartments under the raised bottom are made free of

equipment compartments for contaminated water. Even lower for trapping mechanical particles separated on filters

conical sediment traps are located. All exits cleaned in each given compartment are made in one level vertically.

From the pool (s) with Clarium catfish (total ichthyomass 4.5 t, with a planting density of 450 kg / m ³ and a water temperature of 28 ° C in a water volume of 10 m ³ ), the water containing contaminants enters the above-described complex purification system 22.5 kg fur. pollution and 27kg of biological pollution. At the exit of the primary filter

mechanical water treatment, the water contained 1, 125 kg of mechanical impurities (the efficiency of mechanical treatment is 90%). At the outlet of the biological treatment filter, the amount of mechanical impurities in the water was 25.425 kg due to bacterial sludge. At the outlet of the secondary fine mechanical water purification filter, the water contained 0.5 kg (the mechanical cleaning efficiency is 98%). Electricity costs 0.72 kW (average pumping pump per 10 m ³ and a standard air compressor with a capacity of 200 l / min).

Example 2

For the purification of water from the pool (s) with the sterlet, the closed water supply units perform a complex purification system. The cleaning system consists of 3 sequentially arranged filters, each of which is made individually. These filters are connected by piping. Filter tanks have a cylindrical shape, their working volumes are related to each other as 4: 6: 3. Compartments mechanical cleaning are filled with lamels at 7/10 of the height of the compartments, the compartment with a fluidized bed is filled with floating bio-loading at 55-70% of the working volume of the compartment, under the working volume

the volume of the compartment from the raised bottom to the upper water level in the compartment). The first filter is the primary filter

mechanical water treatment and is designed to separate mechanical impurities up to 20 mm in size. The filter contains sections of tubular separation lamellas with a reduced diameter of 23 mm. These sections are located on the raised bottom with perforations of 23 mm or more. The second filter is a biological treatment filter, filled with bio-loading located above the raised bottom. Bio-loading

represents hollow cylinders with a branched surface with a reduced diameter of 18 mm. The size of the perforations on the raised bottom is 15 mm. The third filter is a fine filter

mechanical water treatment and is designed to separate mechanical impurities up to 20 microns in size. The filter contains sections of tubular separation lamellas with a reduced diameter of 12 mm. These sections are located on the raised bottom with perforations of 12 mm or more. All compartments under the raised bottom are made free of

From the pool (s) with sterlet with a total ichthyomass of 450 kg, with a planting density of 45 kg / m ³ in a volume of water of 10 m ³ ), the above-described complex cleaning system receives water with a pollution content of 2.25 kg fur. pollution and 2.7 kg of biological pollution. At the outlet of the primary mechanical water purification filter, the water contained 0.112 kg of fur. pollution (the effectiveness of fur. cleaning is 90%). At the exit of the bio-filter, the amount of fur. pollution in water was 2.54 kg. At the outlet of the secondary fine mechanical water purification filter, the water contained 0.05 kg of fur.

pollution (the effectiveness of fur. cleaning is 98%). Expenses electricity 0.72 kW (average pumping pump per 10 m ³ and a standard air compressor with a capacity of 200 l / min).

The above examples should not be construed as limiting the scope of the invention. On the contrary, variations, modifications and equivalents of the described examples are also possible within the scope of the rights set forth in the claims.

Industrial applicability of the invention and the achievement of the technical result

The claimed invention is a technical solution, because represents a solution to the problem of achieving the stated

technical result by creating a device consisting of structural elements that are technologically and structurally interconnected. At the same time, the set of essential features of this invention, the device system, is united by a single creative concept. Parts (elements) of the device are in constructive unity and functional relationship, and their joint

use leads to the creation of a new device with a new purpose and function - a system of integrated water purification of aquaculture pools.

This technical solution is industrially applicable in the field of aquaculture cultivation and is applicable as a system of integrated treatment of pool water for their maintenance. The application and use of the inventive system of integrated water treatment

aquaculture pools does not cause any difficulties and can be carried out by specialists with appropriate training. When implementing the system, devices, devices and

materials manufactured by industry and in the open market. Methods of carrying out the invention are methods of machining metal and plastics, electric welding and thermal welding of plastics, metalwork, installation, construction works. Means of implementation are

mechanical means, machine tool equipment and manual machining tools, welding equipment, construction equipment and machinery.

The above set of essential features

of the claimed invention and their disclosure allows us to conclude that the claimed technical result is achieved, namely the achievement of the following technical advantages compared to the prototype:

1. Increasing the degree of water purification due to the organization of the laminar regime of water flow through the purification system, the presence of an additional fine mechanical purification compartment and alignment of the water mirror of all purification compartments at one level with constant hydraulic resistance.

The organization of the laminar regime of the flow of water through the treatment system reduces the amount of contaminated particles captured by the water stream and transferred further through the system. The additional fine mechanical cleaning allows you to purify water from mechanical particles less than 20 microns in size, including particles of bacterial sludge. Aligning the water mirror of all cleaning departments at one level reduces the cost of electricity to overcome additional hydraulic resistances at various levels of the system.

These design and technological solutions allow to reduce the cost of electricity for water treatment to a minimum, since the only consumer of electricity will be a circulation pump installed at the filter outlet, and in addition to such a pump, a prototype drum filter motor and a washing pump are also required in the cleaning system of the prototype.

2. Increasing the resource of the bio-loading due to the implementation of self-cleaning bio-loading technology.

The inventive design of a complex water purification system for aquaculture pools allows the bio-purification process in the mode of continuous self-purification. In this mode, the dead thickened layer of bacterial sludge on the bio-carrier is separated from it and falls down through a moving laminar aerated stream of water. Particles of the separated sludge fall through the perforation of the raised bottom and the compartment for the entry of contaminated water into the conical traps-traps and then are removed to the outside. Such self-purification of the bio-load allows the biofilter to work without stopping for prophylaxis for 8-10 years, which is 15-20 times the working life

biofilters analogues.

3. Creation of constructive abilities to remove mechanical impurities in the biological water purification unit by performing a perforated false bottom under bio-loading, constructive organization of a compartment for contaminated water entering under false loading and constructive organization of support for the laminar flow regime of the water being cleaned in the filter.

The constructive organization of the free space under the false floor consists in the constructive choice of the form, volume, and also the level of entry of the purified water. The dimensions and shape of the perforations on the raised bottom are chosen according to the size and shape of the bio-loading or lamella separation units. The laminar current mode of the water being cleaned in the filter is maintained by arranging the outputs of the water purified in each given compartment to one level with vertical accuracy of ± 0.20 m and preferably to a level with a pool mirror with aquaculture. Also, support for the laminar regime is organized by the volume of the compartment for the entry of contaminated water under the raised bottom. The totality of these design solutions allows you to withstand the flow rate / movement of the purified water in the desired specified mode.

The above description of the invention and examples of its implementation confirm the achievement of the claimed technical result in the process of carrying out the invention. They also show a causal relationship of essential features between themselves and the achieved technical result.

From the above description it also follows that the achievement of a technical result is possible only if all a combination of essential features, which also confirms the technical solution to the problem of carrying out the invention.

Bibliography

1. Patent for the invention of the Russian Federation Ns 2460286, IPC A01 K 61/00,

12/30/2010. G.Yu. Ivanov, E.V. Gorbenko. Installation of closed water supply for reproduction and cultivation

hydrobionts. RF patent Ns 2460286, 09/10/2012, bull. Ns25.

2. US patent Ns 7578262, IPC A01 K 63/04, 08.25.2009 Vaccari, Carlo. Apparatus for filtering aquariums. PCT Pub, 11/25/2004.

3. UZV - Installations of Closed Water Supply. Technology. Site of the company "SIMEON AquaBioTechnologies" [Electronic resource]. - Access mode: http://www.simeon-aauabio.ru/base znanv / uzv so У / (accessed 02.16.2018)

Claims

Claim

Item 1. System of complex water purification of pools

5 aquaculture, including sequentially located

at least one primary mechanical water treatment compartment, which is a container filled with separation lamellas, which are arranged in sections on the bottom, while the size of the free space between

the opposite surfaces of the lamella (lei) is 20-50 mm,

at least one compartment for biological treatment of water in a fluidized bed, which is a tank filled with bio-loading, located on a raised bottom, above which a device is located under the bio-loading layer for

bioload aeration,

at least one compartment of the secondary fine mechanical water treatment, which is a container filled with separation lamellas, which sections are located above the false-20 bottom, while the size of the free gap between

opposite surfaces of the lamella (lei) is 12-20 mm,

at the same time, all containers are vertically oriented and have a height of 3-5 times the reduced cross-sectional diameter of the container 25, in each compartment the raised bottom is made in the form of a perforated plate, under the false bottom there is a compartment free of equipment for contaminated water,

at the bottom of each tank are conical sumps - traps for mechanical pollution,

and at the top of each tank are the outputs cleaned in this water compartment, which are made in one level with a vertical accuracy of ± 0.20 m.

Clause 2. The system of integrated water purification of aquaculture pools according to claim 1, in which all purification compartments are completed

combined and have holes in the upper part for

overflow / discharge of treated water.

Item 3. The system of integrated water purification of aquaculture pools according to claim 2, in which between adjacent containers

channel / pipeline for draining and draining water to the next compartment.

Clause 4. The system of integrated water purification of aquaculture basins according to claim 1, in which each purification department is performed separately.

Clause 5. The complex water purification system for aquaculture pools according to claim 4, wherein the purification compartments are technologically interconnected by pipelines.

Item 6. The system of integrated water purification of aquaculture pools according to claim 1, in which the working volumes of the primary departments

mechanical water treatment, biological water treatment and secondary fine mechanical water treatment relate to each other in the ratio (2-4): (4-6): (1-3).

Clause 7. The complex water purification system for aquaculture pools according to claim 1, in which all water purification departments are located on the line (s) of the water circulation support system to the pump.