JP2008263931A - Breeding system which sets bioreactor and vegetation bowl just above closed circulation type water bath and biologically processes nitrogenous waste - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a breeding system which biologically degrades nitrogenous waste such as ammonia, leftover food, feces or the like generated when breeding aquatic animals in a closed circulation type water bath, by using a biotechnology safely and stably in relief at a low cost, in order to realize an advanced water quality environment, and further enables cultivating vegetation on a tray plate to prevent any static electrical charge and make a living environment comfortable. <P>SOLUTION: In the breeding system depending on the biotechnology, the tray plate is set just above the water bath, thereby realizing space saving in assuring an area of a bioreactor and a vegetation bowl and work saving in operation. In a biological capability, reliability is assured by improving the water quality environment which is attained by shortening culture/reaction/degradation periods of microorganisms and the like, by using an aerating nozzle and a carrier filter element with which a structure of a bioreactor vessel is filled up, and an indirect conversion of a heating energy. The advanced water quality environment is kept by combining raw materials for filling up the structure, and using a fiber whose void ratio and water retentivity are high and whose diameter has a large contact area in specific surface. Furthermore, the cultivation of the vegetation on a waterway of the tray plate can improve green amenities (environmental adjustment, perception and psychology). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a breeding system in which ammonia nitrogen and nitrite nitrogen are rendered harmless by a biological prescription and co-prosperity of appreciation fish and vegetation. More particularly, the present invention relates to a bioreactor having a carrier structure for biologically degrading dissolved substances and for new biotechnology to produce specific substances.

Management of biological waste with artificial microorganisms is important to bring close to the natural environment when raising live fish by ornamental fish, live fish, cultivated aquaculture, etc. In particular, the accumulation of nitrogen waste such as ammonia, feces, and leftovers in a closed space is toxic to the living body, and the damage is significant.

In order to remove organic nitrogen and ammoniacal nitrogen generated in water, wastewater treatment methods such as sewerage have been established as biological nitrogen removal methods in two types of bacteria, nitrifying bacteria and denitrifying bacteria. Nitrification is a phenomenon in which aerobic bacteria consume oxygen due to aeration and are promoted to oxidation by ammonia nitrogen and nitrate nitrogen in water (nitrifying bacteria use ammonia nitrogen (NH4 as an energy acquisition means). -N) is a general term for bacteria that oxidize nitrite nitrogen that is converted to nitrite nitrogen (NO2-N) and convert it to nitrate nitrogen (NO2-N))

Oxidation reaction from ammonia nitrogen to nitrite nitrogen by nitrifying bacteria (Nitrosomonas sp.), Denitrifying bacteria are commonly known anaerobic bacteria represented by (Pseudomonas sp.), Even in anaerobic environments In living bacteria, it has been confirmed that denitrification occurs due to a concentration gradient in the biota even if the dissolved oxygen concentration is quite high (6.0 mg / l).

Ammonia-oxidizing bacteria are bacteria of the genus Nitrosomonas, and nitrite-oxidizing bacteria are said to be bacteria of the genus Nitrospira. In order to perform biological nitrogen removal stably and efficiently, a biofilm filtration method has been put to practical use.

However, the points required for the breeding process in closed circulation water tanks, etc. are as follows: (1) The system is simple (2) Rich in operability (3) The structure can withstand long-term use (4) Principle of process purification (5) The natural phenomenon can be used as efficiently as possible (6) Economical and rational (7) There is a strong demand for a biological filtration breeding system that does not impact the environment.

There is a biological filtration method, and bacteria are propagated and propagated in the filter, and various types of filtration methods such as bottom type, top type, throwing type, sealed external type, etc. have been put into practical use. The filtration method / size and the type of contact carrier are selected based on the size / volume of water.

The filtration capacity is also affected by the size of the filtration tank that purifies the water quality based on the number (mass) of living organisms and the amount of feed. The filtration capacity is proportional to the amount of contact area of the carrier material, and pebbles, ceramics, foam, porous material, etc. are used in combination.

Usually, the decomposition of ammonia takes 2-3 weeks. Biological filtration is supplementation of oxygen, and aerobic bacteria consume nitrogen and oxygen in the carrier layer to cause nitrification reaction. The rate of nitrification depends on the number of bacteria attached to the carrier material. (1) The nitrifying bacteria themselves are buoyant bacteria that are not sticky and cannot adhere to the filter medium. (2) Nitrifying bacteria have a slow growth rate in order to synthesize necessary organic substances from inorganic substances (it takes 1 to 3 months because it divides once every 4 to 5 days). (3) In inorganic nutrition, natural conditions depend on the breeding conditions. There is a limit to the renewal rate / growth between flows in the environment, and nitrous acid is vulnerable to changes in water quality under conditions of water temperature (25 to 35 ° C.) and PH (7.0 to 8.5).

Based on these facts, the filtration bacteria method, which requires a safe and stable water environment and no environmental pollutants regardless of the size, is a filter carrier material, method, and device that has evolved from the conventional method. Installation location, performance, reduction of environmental burden, cost, etc. are also required issues.

(1) The specific surface area is the most important factor in the performance and performance of biofiltration. (2) Porous and foamed materials (urethane foam, etc.) Especially, the carrier material in the structure of the fiber group has high porosity and high biofilm adhesion and high adhesion amount, but it is water-permeable (easy to be clogged and load-bearing). There is a problem with durability. (2) The surface shape and form of ceramics etc. have poor contact functionality because microorganisms adhere only to a flat surface and are required in large quantities. (3) The water flow in the carrier is slow in terms of performance and has many drawbacks, such as the fact that oxygen cannot reach more than 5 microns from the skin of the biofiltration membrane.

In view of the above, it takes a long time and effort to stabilize the colonies where microorganisms live by the biological filtration method of the conventional rearing system at the initial stage. If the water quality environment is not good, the immune resistance of the living body is reduced, and safety is always dangerous. Statistically, there are statistics that 3/1 people die in a few weeks, and give up raising more than 3/2 in less than a year. These are accidents in which biological filtration is not sufficiently performed, and are also defects in conventional breeding systems.

In order to solve the above-mentioned problems, the breeding system of the present invention is required to cultivate microorganisms in order to protect the water quality environment by culturing, breeding and decomposing microorganisms by biotechnology safely, stably, safely and reliably. Create an easy environment. Reactor vessel size, type of carrier material to be contacted, material / amount of contact carrier material, composition, aeration method, heating amount and method, residence time, water flow capacity, material, management in hydroponics, etc. Cost becomes a bottleneck.

"Nitrite-degrading organisms and nitrous acid removal method by these microorganisms" "Molded body with fiber assembly and reinforced composite and its manufacturing method"

References

River Water Purification Using Membranes ”Water Quality Technology Research Center“ Introduction to Environmental Microbiology ”Micro-organisms that support humans Masayuki Seto“ Copper and Antibacterial Action ”Japan Copper Center

(1) Reactor installation location: Space-saving (multi-stage and combined use with throughput), reduction of equipment material, equipment cost, labor saving of operation, and maintenance cost reduction.

(2) Reliability through quality improvement: shortening of culture, reaction and decomposition time. Carrier packing structure carrier cost.

(3) Heat conversion energy means: The amount of heat generated is the heat radiation of the incandescent light bulb and the type of protective cylinder (embossed to diffuse conduction heat) durability, life and cost.

(4) Supply and drainage of circulating water: Added value by sharing hydroponics in the vegetation pot (phosphorus / nitric acid denitrification by root hair contact) on the area of the tray plate, the drainage diameter and area of the water flow

(5) Biotechnology: High oxidation and decomposition of cecillin such as jadama, development of immune resistance, development of growth reinforcement and reduction of environmental burden, possibility of high density breeding in high water quality environment.

(6) Reactor container: Recycling of industrial waste is possible. Resin container, pottery, glass

Hereinafter, a breeding system apparatus according to an embodiment of the present invention will be described in detail with reference to FIGS.

In an Example, it is a three-dimensional front view of the breeding system of the closed circulation type water tank shown in FIG.
A tray plate 2 having a discharge port 4 and a water channel function is placed directly above the water tank 7. The material may be transparent resin, glass, or metal. The length of one side should just be more than the edge of a water tank, and stable. The bioreactor container 1 and the vegetation pot 3 are placed in the area. The breeding water is guided by the pump P with a bellows hose tube, and the water is diffused by the first layer filter 13 on the side while contacting the atmosphere from the upward discharge port 11 of the uppermost stage of the reactor 1 toward the ceiling of the transparent cover 10. .

The balance between the pump discharge amount and the water amount of the discharge port 15 of the reactor 1 can be adjusted by the diameter of the discharge port 15 and a plurality of spare holes. The amount of water is always filled up to the overflow port 14 near the upper stage of the reactor body 1. The residence time of the reactor 1 is also important, and the water flow difference is the difference between incoming and outgoing water. The water flow at the discharge port 15 is such that the height of the water on the tray plate 2 always flows from 1 to 2 cm at a constant amount, and the vegetation pot 3 (partly flows through the lateral hole and passes through the plant root hair layer) the discharge port on the bottom surface Return from 4 to the aquarium. The sphere 5 is an aggregate of fibers, has a carbon fiber beard, silences, retains water, and retains vegetative bacteria. The Venturi tube 6 is a mechanism of a closed circulation type breeding system in an environment where the aquarium is always agitated by the action of aeration and water diffusion by contact with the sphere.

FIG. 2 is a cross-sectional view of the bioreactor in more detail.
Reactor 13 copper fiber is a block of 0.5 to 1.5 cm thick void layer (85-90%), and carbon fiber is placed on it. The size is within the transparent cover and water is always in this primary The carrier layer performs physical filtration in the role of a filter. The composition of No. 13 is a copper fiber having a fine diameter of 0.05 to 0.1 mm, has an antibacterial action, and is placed for the purpose of inhibiting the growth of Escherichia coli, algae and the like. Carbon fiber diameter (7 microns), defibrated and felted, spread out in a felt-like plate shape with no water gaps, copper fiber compensates for gaps, leaves food left over, nitrogen waste such as feces Is blocked on this, and crushed and disassembled with water pressure. Further, the secondary layer carrier filter 22 holds and guards the primary layer filter. The secondary layer filter has a thickness of 10 to 15 mm and a fiber diameter of 0.01 to 0.1 mm, and a reinforcing resin net is sandwiched between the two layers to provide strength resistance (porosity 95 to 99%). .

The tertiary layer carrier filter 26 is composed of two types of fibers having a diameter of 0.01 to 0.1, and the density gradient layer is mechanically entangled three-dimensionally with the reinforcing resin net 25 so that the net is covered with the fiber layer. A structure that can withstand load (loading 5 to 10 times the fiber weight). In particular, the purpose of 25 is to dissolve and decompose specific substances (eg jasper) biologically, so that the water-soluble protein (18 types of amino acids) of fibron sericin and so on can increase growth hormone and oxidative resistance to immune resistance・ Fibers are always packed in places where it can be easily used as biotechnology with other substances such as utilization of growth promoters. In the aeration, the stone nozzle 24 oxygen spreads to every corner of each layer of the carrier of the reactor, and aerobic bacteria are activated to shorten the time for culturing, reaction and decomposition.

Resin net reinforcing quaternary layer carrier filter 23 Spread the carbon fiber (7 microns) on 0.1 to 0.2mm diameter. A carrier filter that secures an air gap of 95 to 99% and withstands the stable place of microbial colonies and the load of each filter of 13, 22, and 26. 18 is a portion that is reinforced with a reactor and a pair of structures. The outer surface of the structure withstands tough loads and guards the soft surface of the fifth-layer filter 30 with a reinforced resin net and a 10-15 mm thick air gap (95-99%) in the center.

Microbial activity requires temperature, and the water temperature in the action of nitric acid is in the range of 20 to 35 ° C., and the optimum temperature is about 27 ° C. If microorganisms without a bioreactor enter a stable period, the water temperature can be lowered. The set temperature may be automated with an underwater electric heater for heating, but the contact area with water is 16 mm. In the heating method of the present invention, the heat derivative inside the reactor is protected against water leakage, and the inside of the cylinder for the protective cover is radiated by irradiation with a general lighting bulb (halogen, infrared, mercury) to the outside of the cylinder, but the water flow inside the reactor is The heat is taken away and the radiant heat is consumed stably, the use of heat radiant energy is inexpensive, and the radiant heat action is efficient in embossing. The size of the protective cylinder is the diameter of the bulb and the heating surface is larger than the electric heater. (0035) Table 4 shows the amount of energy required for the temperature up to 27 ° C. and the mass of water.

A waterproof bulb device may be used. If the water leakage countermeasures of the protective cylinder 21 are sufficiently taken into consideration, the material may be beer aluminum cans, glass cups, air nozzle aluminum cans, etc., from household waste, and the type of cap is based on the bulb diameter and wattage. There are many types of light bulbs with an inner diameter of 30-60 mm. Aluminum or heat conduction and heat dissipation are advantageous, but anti-corrosion measures are required. In the test, embossing has better heat conduction and heat dissipation. (Table 1, 1-1, Table 2, 2-1) (Table 5).

The fifth layer filter 30 may be any synthetic fiber (fine diameter 0.035 mm) rolled into a 3-5 cm jasper shape. The sixth layer 19 may be filled with rice husk, and the insufficient additional portion (covered with non-woven fabric) that serves to stabilize PH and reinforce biological minerals may be placed in a tray waterway.

The vegetation pot 3 is placed in a waterway and can be moved so that a plurality can be enjoyed alternately. In order to expect denitrification, it is better to raise the roots of plants well and raise them with double bottoms, so that the flow of water is better without disturbing the waterway. .

The area of the tray plate 2 is sometimes secured in a wide area. Usually, small sand tanks are covered with bottom sand, but there are problems in terms of management and weight in use. In this respect, the method of the present invention is convenient in terms of management because it can be widely used without placing sand or the like on the bottom side and can be placed on a tray plate if necessary. The tray board is transparent / opaque and the material is selected and a small aquarium can be handled with a sufficiently transparent resin / glass board. At large scales, it may be used in combination with metal in terms of structure and durability. Sometimes a multi-stage bioreactor is rationally processed in parallel.

It is one of the nitric acid bacteria that work to replace ammonia with nitrous acid. The optimum pH of nitrosomonas is in the range of 7.8 to 8.0. go. Below 6.0, the activity of all nitrosomonas bacteria stops. The temperature is 20 degrees to 30 ° C., and the optimum temperature is about 27 ° C.

In the breeding system of FIG. 1, Tables 1 and 2 are change tables of a decrease process of ammonium nitrogen (NH 4 -N) and nitrite element (NO 2 -N) using ammonia water (NH 4 OH). (This is the time it takes for bacteria to settle at the initial stage.)
Table 1-1 and Table 2-1 show the ability to treat bacteria with the same amount of ammonia water continuously.
The (bioreactor) performance and capability of the breeding system shown in FIG. 1 are displayed.

    Table 4 Amount of thermal energy (W) required to raise the temperature in the bioreactor to 27 ° C

The required capacity of energy E (W) for raising the mass A (liter or kg) of water to be heated and B (° C.) water to C (° C.) in D (time) is shown below.

Table 1 and Table 2 and Table 1-1 and Table 2-1 show the effects of the invention in Table 3 using the apparatus shown in FIG. Further, Table 5 shows the experiment of raising a living body (aquarium goldfish).

Table 5 is a breeding result table conducted during the winter season from November 2006 to April 13, 2007 during the experimental observation of the number of organisms and the amount of food and (houseplants) with respect to the volume of the aquarium. is there.

The standard for breeding in a closed-circulation aquarium is one with a biological load of 7-10 cm per 10 liters of water. For living organisms with a lot of waste generation, the half value is used as a guide. Especially, overcrowded breeding is a deterioration of the water quality environment, and damage due to stress on the living organism is considered dangerous. As for the effect of the breeding system shown in FIG. 1, the conditions under which microorganisms can sufficiently act are oxygen, temperature, and colony, and Table 5 is an example showing the effect of the present invention. Even if stress occurs in a narrow aquarium in an extremely overcrowded breeding environment within a closed circulation type breeding aquarium, advanced water quality purification in a bioreactor becomes an extremely comfortable environment for living organisms.

Fig. 1 Best mode of breeding system.

Test Form Test Reagents of Examples in Table 1 and Table 1-1:
Concentrated aqueous ammonia (NH4OH) 28% (industrial chemical) 5mg / l
Container: Glass water tank Capacity: 30 × 20 × 25 cm 12 liters hemispherical transparent cover: 9 cm Flange 1 cm Acrylic tray plate Dimensions: 16 × 27 × 3.5 cm Styrene resin transparent tray plate Tray plate capacity: Approximately 2 liters Outlet diameter: 18 mm
Reactor dimensions: 25 × 16 × 13 cm Reactor container made of PET resin: 2.4 liter carrier material form: first layer filter (copper fiber) 18 carbon fiber: 5 g ○ shape 8 × 2 cm
2nd layer filter 20g ○ Shape 16 × 1cm
3rd layer filter 43g 16 × 14cm
(Biotechnology loading cylinder) Diameter 2cm
4th layer filter 20g ○ Shape 14 × 1cm
5th layer filter 10g Random packing
6th layer (rice husk) 250g random filling 13 x 2cm
Synthetic fiber: Polyester fiber / Polyvinylidene chloride 0.035mm
Electrothermal form: Tube: (Aluminum beer can 350ml Diameter: Inner 56 / Outer 57mm)
Incandescent light bulb: 60W Base: E-26 Krypton ball (Toshiba) Ball diameter: 50mm
Submersible pump: 100v / 4.5w Diameter: 15mm
Submersible pump discharge rate: 3,050 cc / min Bioreactor discharge rate: 2,598 cc / min Aeration pump discharge rate: 1,000 cc / min (adjusted with a bifurcated branch valve)
Number of visits: 4 times / minute

Examples Table 1 Performance of carrier material: (1) Test days: 15 days (2) Specific surface area: 1,500 m2 / m3 (3) Porosity: 98% (4) Water retention: 780% (5) Load resistance : 2kg / deflection rate 0%

    Fig. 1 Best mode of breeding system.

Test Form Test Reagents of Examples in Table 2 and Table 2-1:
Concentrated aqueous ammonia (NH4OH) reagent 28% Grade 1 6 mg / l
Container: Polycarbonate 25 × 26 cm 12 liter hemispherical transparent cover: 9 cm Flange 1 cm Acrylic tray plate dimensions: 160 × 270 × 35 mm Volume: about 2 liters Styrene transparent resin tray plate Reactor container: 2.4 liter reactor container Dimensions: Height : 24 × 16 × 13 cm Form of PET resin carrier material: 1st layer filter (copper fiber 15 g carbon fiber; 5 g o-shaped 8 cm × thickness 2 cm
2nd layer filter 20g ○ Shape 16cm × 1cm
3rd layer filter 70g 16 × 1
(Biotechnology loading cylinder) 2cm
4th layer filter 20g ○ Shape 14 × 1cm
5th layer filter 10g Random placement
6th layer (rice husk) 250g Randomly placed synthetic fiber: Polyvinylidene chloride / polyester 0.035mm
Electrothermal form: Tube (Glass cup 200ml Diameter: Inner 48 / 55mm
Incandescent light bulb: 54w Base: E-17 Mini krypton ball (National) Diameter: 28mm
Submersible pump: 100w / 4.5w Diameter: 15mm
Pump discharge rate: 3,050 cc / min Bioreactor discharge rate: 2,600 cc / min Pumping rate for exposure: 1,000 cc / min (adjusted with a bifurcated branch valve)
Number of trips: 4 rotations / minute

Examples Table 2 Performance of carrier material: (1) Test days: 24 (2) Specific surface area: 1,600 m2 / m3 (3) Porosity: 98% (4) Water retention: 970% (5) Load resistance: 2kg / deflection rate 0%

Vegetation (hydroponics) pots: Dimensions: 8.5 x 12 x 9 cm (0.92 liter)
(Zeolite 30: Recycled ceramics 50) 450cc (270g)

The measurement method used in the examples is shown.
Bulk specific gravity = g / cm3
[Bulk density] Determined from the weight (g) and volume (Vcm3) from the sample piece.
[Water retention amount] Obtained by the following equation from the end of the test (g) W3 and the weight before the test (g) W1.
Water retention% = (W3-W1 / W1) × 100
[Porosity] From the weight (g) and volume V (cm3) of the filler (specific gravity d), the following equation was obtained.
Porosity (%) = (1−W / (V × d)) × 100
[NO2 (nitrous acid) measurement] 5 ml 2 liquid measurement kit (minimum 0.2 yellow to maximum 64 red mg / l)
[Specific surface area m2 / m3] The surface area SL per unit, the length LW per unit, and the surface area SW are D for the fiber diameter, d for the denier, and p for the density. SW per gram. Fiber diameter (diameter) × π = SL (m2), LW = 9,000 / d = LW (m / g), SL × LW = SW (m2 / g).
[PH measuring instrument] Hydrogen ion concentration measurement (HORIBA6350-10D)
[Shape retention ratio] Load weight (cm2 / 5g) Initial thickness mm (H1), Thickness mm (H2) after 3 minutes
Shape retention% = H2-H1 / H1 × 100

The present invention provides a closed circulation aquarium-based breeding system based on a bioreactor that is superior in equipment compactness, labor saving, resource saving, energy saving, efficiency of processing efficiency, ease of maintenance, and high breeding density. Even in this environment, the advanced water quality environment provides safe, stable, and reliable provision of aquariums in the foliage plants and flower buds that depend on vegetation and the expectation of green amenity (environmental adjustment, perception, and psychological) effects.

Furthermore, co-existence and co-prosperity with existing industries such as fisheries, aquaculture, aquaculture, livestock, and domestic wastewater related to aquatic organisms, as well as industry and plant vegetation (foliage plants and flowers) industries that aim for a water quality environment Applicability to environmental learning and environmental education materials at school.

More particularly, it also relates to the availability of a bioreactor with a carrier structure that allows novel biotechnology in biological degradation of dissolved materials to produce specific materials.

It is the whole figure which displayed the closed circulation type breeding system which constitutes the example of the present invention.

It is sectional drawing which displayed the closed circulation type rearing system which comprises the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bioreactor container 2 Tray board 3 Vegetation pot 4 Drain outlet 5 attached to tray board Filament thread and internal structure of spherical contact carrier material 6 Venturi tube (aeration nozzle, hose), filament fiber, fixed plate 7 Water tank body P Underwater circulation pump and cord 8 Pedestal base / filament fiber and fixing plate 9 for fixing the pump 9 Heating protection tube and bulb / lid / electric cord 10 Transparent cover 11 Upward discharge pipe and bellows hose 12 Reactor container overflow required outlet 13 First layer carrier material (filter)
14 Reactor container drain outlet 15 Vegetation pot water inlet 16 Bifurcated branch cock 17 Air pump 18 Vegetation (houseplant or flower plant)
19 Thermometer 20 Second layer carrier material (filter)
22 Third layer carrier material (filter)
23 Biotechnology loading cylinder 24 Exposure nozzle and hose 25 Light bulb and protection cylinder 26 Fourth layer carrier material (filter)
27 Container Reinforcement Shelf 28 5th Layer Carrier Material (Filter Chip Shape)
29 Sixth layer carrier material (rice husk)
30 Protective tube waterproof packing 31 Vegetation pot bottom net 32 Packing (foamed urethane)

Claims (8)

In the present invention, a bioreactor (microorganism culture conversion) container and a vegetation pot are placed on a tray plate with a drain outlet just above a closed circulation type water tank. Establishing a safe, stable, and reliable water quality environment preservation even in an over-density breeding environment, where biotechnology uses ammonia and nitrous acid as a biological treatment in a short time. In addition, a breeding system in which breeding live fish and vegetation have a comfortable space and environmental control effects. The reactor vessel consists of a container with an open and porous fiber layer, rice husk, aeration nozzle, a protection cylinder and a shelf for heating medium, and the packing material is synthetic, metal, inorganic fiber, rice husk and the carrier material shape is A three-dimensional integrated structure with a resin net in between. Some shapes are 2-5 cm jade-like fibers, the contact area is 800-3,000 m2 / m3 in terms of specific surface area, and the porosity is 95-99%, and the water retention rate is 200% or more, The structure according to claim 1, which can withstand a high load of fixed matter. Oxygen is supplied in a bifurcated way to the exposure site, and a heating source is attached inside the bioreactor vessel. The heat source may be heat radiation, which is indirect use of general incandescent bulbs (halogen, mercury lamp, infrared bulb) and ceramics. The multi-stage type or the complex parallel type when the reactor processing capacity is large. The material of the reactor vessel and the protective cylinder of the heating medium may be resin, metal, glass, porcelain or the like. The shape dimension is proportional to the amount of energy required, and the conduction and heat dissipation effect of the protective cylinder is embossed and the use of industrial waste PET bottles is also given to reduce equipment costs. The tray plate is provided with a discharge port as a waterway side groove, and the material is differentiated by transparency, opaqueness and strength, and may be glass or metal. Denitrification (phosphorus and nitric acid) occurs in pots (contact with plant root hairs such as foliage plants and flower buds) in the tray plate waterway. If necessary, additional rice husks and sound absorbers can be placed. The pump is stopped, and a structure capable of cleaning and replenishing water from the uppermost stage of the reactor is provided. The fiber assembly has a large contact area, has buoyancy, and the rotated or fixed sphere has sound absorption, microbial residence, and air scattering functions of circulating water. The color characteristic of the fiber and the decorative functionality of the gold-silver fiber are retained. A resin net loading cylinder having a diameter of 20 to 50 mm and sandwiching fibers is provided at the center of the carrier material. For example, a jasper is inserted to promote the degradation of bromine / cecillin (free amino acid). In a closed circulation type breeding system, copper fiber (fine diameter: 70-100 microns) with a specific surface area of 200-400 m2 / m3 for antibacterial action (E. coli) of circulating water. 2. The physical filtration is also possible by placing carbon fiber.

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