JP6283786B2 - Livestock water purification - Google Patents

Description

Provided is a seawater purification system for facilitating artificial breeding of aquatic animals that have been difficult to breed for a long time, such as squid, and to increase the survival rate. The present invention relates to a powder ion exchange resin having an average particle size of 50 microns or less, characterized by having a pharmacological action that acts on radicals generated when raising aquatic animals in closed water areas to weaken toxicity.

Many patents purify ornamental fish breeding water using ion exchange resin, but it is a softening action of ion exchange resin. In the case of powder ion exchange resin, it maintains water clarification and suppresses generation of harmful nitrogen components. Therefore, it was used as a filter medium for enhancing the biological filtration function.

Long-term rearing of squid was considered difficult, and there was no way to revive moribund squid. In the process of investigating the relationship between the rise and fall of squid livestock water quality and the squid mortality rate, it is important to examine the rise and fall of the ultraviolet absorption spectrum of livestock seawater as an index for judging water quality in addition to harmful nitrogen such as ammonia and nitrous acid I knew.

When the squid is continuously bred, radicals having an absorption spectrum at 250 to 200 nm are generated in the bred seawater. The radicals are instantaneously reduced when a powder ion exchange resin is applied. I learned that by reducing radicals, the health of squid that had been drowning gradually recovered. Through a model test, it was also confirmed that an absorption spectrum was generated at 250 to 200 nm by adding a very small amount of a proteolytic component containing nitrite nitrogen or the like to livestock seawater. It can be easily estimated that radicals derived from low molecular weight carbon compounds are generated in the livestock seawater in addition to the proteolytic components and an absorption spectrum is generated in the ultraviolet region.

The radicals release or donate electrons and transfer to a stable compound. The ion exchange groups or anion exchangers that act as powder ion exchange resins effectively act to accelerate the transition from radicals to stable compounds, thus facilitating the disappearance of radicals, resulting in an absorption spectrum of 250-200 nm. It seems that the absorbance was decreased.

An effective ion exchange resin to be applied to the present application is a fine particle ion exchange resin having an average particle size of 50 microns or less, preferably an ultrafine particle ion exchange resin that can be easily dispersed in one surface in water. A filter using the exchange resin-containing adsorbent as a filter layer, preferably an airlift filter is preferred. It has been found that the ultraviolet absorption spectrum concentration decreases instantaneously in the treatment liquid by passing a contaminated liquid containing radicals through the device element. Fresh fish shop ginger has squid that can be said to be overcrowded, and the majority of squid vomits ink and dies in a few hours. The metabolite derived from squid breeding contains various radicals derived from the decomposition reaction of organic matter and generates an absorption spectrum at 250 to 200 nm. It was found that in the case of livestock feed water, where the absorption spectrum is remarkable and the absorbance is high, aquatic animals lose their vitality and soon die.

Based on these findings, we pursued the effects of the powder ion exchange resin and the metabolite, and devised an air lift filter device with excellent convenience, and pursued the usage of the powder ion exchange resin adsorbent. As a result, it has been found that the squid breeding period can be greatly extended only by coexisting the liquid composition containing the powder ion exchange resin uniformly or the adsorbing sheet containing the liquid composition in the breeding water.

In the cooking industry, fishery industry, fresh fish industry, and aquaculture industry, saltwater fish such as squid died before processing, resulting in a large economic loss. It is a technology that increases the survival rate of aquatic animals by adding powder ion exchange resin to breeding seawater. Technology for purifying fresh water using ion exchange resin has been established, but it was thought that seawater with a high salt concentration had no adsorption function even though impurities were desorbed. Therefore, there is no prior art using the pharmacological effect of the ion exchange resin. Contrast Lorenz, a Nobel Prize in Physiology or Medicine, and an authority on animal behavior, cited squid artificial breeding as an animal that could not be artificially raised. We succeeded in rearing squid in Japan. This technique has become technically possible by incubating ammonia-degrading bacteria (nitrite bacteria) in the filtration layer so that the rotating water flow in the circular aquarium and the ammonia concentration does not increase. However, in reality, it was a fairly large device and was not common. The National Institute for Physiological Sciences (Okazaki City) also used squid to study nerves, but carried seawater from Gamagori.

Prior art documents
1. Examination of squid breeding method at RIKEN Brain Science Institute.
SUISANZOUSHOKU 51 (4) 391-400 (2003)
2. About the raw fish transportation method of Japanese common squid using a filtration device.
Hiroshi Ishii Kamisui Lab. No.96 22
Prior patent documents

JP2012-179001 JP2012-011348 JP 2005-102673 A

In order to reduce the number of fish that die before processing raw fish and to provide fresh seafood, a seawater purification method and apparatus that uses the inherent technology of powder ion exchange resin as a purification agent for breeding seawater.
The subject of the present invention is animal husbandry, which is greatly different from the fish breeding goal of continuing long-term breeding, and its effect is to increase the short-term survival rate until immediately before cooking, which is inexpensive with pharmacological action. It is the development of a purification system that is highly convenient with a purification agent.

Of particular importance is the delivery of aquatic animals captured from the ocean to the consumer as live fish, and most importantly to provide a sea water purifier with immediate effect and to find a method of use. Reduces the death of aquatic animals during transport, transports live in ginger in consumption areas represented by seafood restaurants and luxury hotels, and the survival rate of ginger in the consumption field with a simpler purification method Is to increase.

A method for purifying aquatic animal breeding water in closed waters, characterized by extending the life of dying aquatic animals by reducing the absorption spectrum of 250 to 200 nm by acting on radicals generated by continuing breeding. A powder ion exchange resin having an average particle size of 50 microns or less having a pharmacological action.

A powder ion exchange resin having an average particle size of 50 microns or less, wherein the aquatic animal is a squid.

The powder ion exchange resin marketed in Japan has an average particle size of 125 microns, and the fine particle ion exchange resin with an average particle size of 50 microns or less is a powder ion exchange resin prepared by mechanically pulverizing a granular ion exchange resin. However, it may be a synthetic product, and an ultrafine particle ion exchange resin of 0.1 micron or less is produced as a synthetic product, but there is no production record in Japan.

Although the physical adsorption function is enhanced by miniaturizing the particle size of the ion exchange resin, it is difficult to handle. Therefore, it is used as an emulsion mixed with microfibrous cellulose.

The powder ion exchange resin adsorbent spread on a porous support such as a non-woven sheet is a product (patent application No. 2015-123511) currently applied for by the applicant of the present application, wherein the powder ion exchange resin adsorption It was found that the pharmacological effect of the powder ion exchange resin was remarkably enhanced by applying the body to the air lift filter of the present application due to a synergistic effect. The characteristics of the air lift type filtration device are shown below.

The powder ion-exchange resin adsorbent is filled in a first bottomed cylinder (A), and the bottomed cylinder (A) is fixed and surrounded with the bottom of the second bottomed cylinder (B) as an upper surface. The bottomed tube (A) includes a ventilation pipe (C) that extends vertically from the bottom of the second bottomed tube (B) to the aquarium water level, and the top of the pipe (D ) Is provided with a drainage port for air and treated water (see FIG. 2).

When contaminated water containing radicals is flowed using the air lift filtration device, the ultraviolet absorption characteristics change instantaneously, the absorbance at 250 to 200 nm is significantly reduced, and the moribund squid is revived. Knew. The filtration device creates a gentle convection over the entire aquarium and prevents a short path of treated water, thereby eliminating localized contaminated water retention. The air introduced from the lower part of the pipe seems to have been changed to water that is easy for the squid to survive by preventing the water quality from deteriorating by causing a vigorous gas-liquid reaction in the pipe accompanied by the treatment liquid in a narrow space.

A circuit that allows regenerated water or air to flow through the filter element with a reduced purification capacity, preferably a reverse flow path, is provided from the outlet at the top of the pipe in order to regenerate the filter element with a reduced purification capacity if necessary. A flowing water passage toward the filter element suction port is provided to prevent the clogging due to the foreign matter accumulated in the element by causing the treatment liquid to flow backward, and the regenerant is passed through the flowing water passage as necessary to allow the element to flow. The air lift filtration device is capable of restoring the adsorption function.

As an effective adsorbent applied to the present invention, it has the function of eliminating radicals derived from radioactive substances and compounds such as nitrite nitrogen, which are seriously harmful to aquatic animals if they are present in extremely small amounts. What is necessary is just to have the compound. As a compound having such a function, a powder ion exchange resin having an average particle size of 50 μm or less is good, and the used granular ion exchange resin may be mechanically pulverized for adjustment. In addition, compounds having a radioactive adsorption function such as various zeolites, powdered charcoal, diatomaceous earth, silicotitanate, insoluble ferrocyanide, crystalline tetratitanate, titanosilicate, Prussian blue, etc. can be employed.

According to the air lift device of the present invention, it is possible to demonstrate the higher purification ability, facilitating the breeding of aquatic animals, and greatly extending the period of squid breeding, which was conventionally considered to be impossible for long-term breeding Thus, fresh live fish dishes can be provided to consumers at low cost.

Ultraviolet absorption spectrum (cell length: 10 mm) Solid line: Powder ion exchange resin treatment liquid dotted line according to the present invention: Contaminated livestock seawater Cross section of air lift filter and flow of seawater A, first bottomed cylinder (bottom, bottom surface) filled with powder ion exchange resin adsorbent B, second bottomed cylinder covering first bottomed cylinder (A) ( Bottom, Top) C, Pipe for ventilation D, Drain for treated water and air

Preparation method of non-woven sheet-shaped filtration adsorbent containing fine particle ion exchange resin Fine particle strong basic anion exchange resin (trade name, Diaion PA312, average particle size: 35) prepared by mechanically pulverizing commercially available granular ion exchange resin A liquid composition prepared by homogenizing 50 g of micron), 10 g of a fine particle strong acidic cation exchange resin (trade name, Diaion PK316, average particle size: 27 microns) and 20 g of a microfibrous compound (trade name: serisch). Then, a polyester non-woven cloth sheet is immersed and mixed, centrifuged to remove adhering water, and then dried to form a particulate powder ion exchange resin adsorbent containing a particulate ion exchange resin (Patent: JP 2012-011348 A). ) Was prepared. In order to make the exchange group of the powder ion exchange resin into Na form and HCO3 form, the powder ion exchange resin filtration adsorbent was immersed in an aqueous sodium bicarbonate solution and then dehydrated and dried. The pH of the seawater is weakly alkaline at 7.8, which is a necessary operation in order to avoid a rapid fluctuation of the seawater pH immediately after use. Choosing coral as a filtration support that includes the powder ion exchange resin is a reasonable and reasonable method.

The fibrous filtration adsorbent (capacity) of the present invention is applied to the coral floor filtration device that circulates and uses the breeding water applied to the squid breeding square water tank (volume: 1,000 liters) of the squid seafood restaurant in Nagoya City. 5 l) was added and the state of squid growth was observed. As a result, in the conventional breeding method, after a few hours have passed since the introduction of the aquarium, the majority of the squid spit out ink and collided with the aquarium wall, so that all squid died after 24 hours. In the method of the present invention, even if most squids passed for 3 days or more, there were no squids that quietly swim in the aquarium and crashed into the aquarium wall and died. A squid that spits squid ink during breeding was observed, but there was no discoloration or turbidity in the breeding water, the clarity of the breeding water was good, and the light transmittance immediately after feeding the squid: T720 nm, 1 cm was 98% Increased to 100%. It can be inferred that the particulate powder ion exchange resin effectively adsorbed the harmful components in the squid ink as well as the turbid components. Conventionally, long-term rearing of squid has been difficult, and for long-term rearing, use a circular donut-shaped aquarium and apply a special aquarium with a water flow that swirls along the water wall to crush the aquarium wall. It was most important to reduce the number of dead squids, but according to the present invention, it is not always necessary to use a circular aquarium, but a square aquarium is sufficient as a marine fish breeding aquarium, and the particulate powder ion exchange resin of the present invention I found out that the effect of applying is great.

Through this experiment, it was found that there was no squid that died before processing even after one week, and the transmittance of seawater was the worst immediately after the squid was introduced, and the light transmittance T720nm before introduction, the value of 1 cm: 100 % Decreased to 96% immediately after the addition, but the transmittance increased with the passage of days, and the transmittance after 3 days increased to 100%. By applying powder ion exchange resin, the survival rate of squid has increased, the squid breeding device is simplified and the breeding method is improved, and further, the economic effect by being able to provide fresh squid at low cost is enormous. I found out.

There is no prior example in which a normal ion exchange resin is applied to an aqueous solution in which a large amount of salts are dissolved, for example, seawater.
By applying a powder ion exchange resin having an average particle size of 50 microns or less, the cation exchange group of the ion exchange resin is in the sodium form, and the anion exchange group is in the carbonic acid or bicarbonate form. It seems that it was effective that it worked effectively that it devised so that pH value might not fall.

Natural seawater is weakly alkaline, and the pH of livestock seawater gradually decreases, and it has been found that it is difficult to maintain the pH 7.8 of natural seawater. As a countermeasure, a small amount of magnesium clinker (MgO) was put in a bag and put into livestock seawater, which not only eliminated the pH drop, but also prevented the dissolution of coral stones into seawater and the amount of refined coral stones generated Decrease. The effect of this was great, and we realized the unexpected great advantage of reducing the cleaning work.

Fill a Styrofoam container (W x D x H = 40 x 80 x 40 cm) with seawater, aeration, feed 8 cups of live squid that were landed at Lake Hamana, and raise animals while performing aeration Experiments were performed (conventional). A porous adsorbent including a powder ion exchange resin (10 × 10 × 1 cm sheet plate) was suspended in the seawater, and an experiment similar to the animal husbandry experiment was performed to confirm the pharmacological effect of the powder ion exchange resin (Example) ). As a result, in the conventional ward, the squid was annihilated and spit out the ink the next day. However, when the powder ion exchange resin sheet coexists, only one cup of squid kills and the ink does not spout. It was.

UV absorption characteristics (cell length) for seawater when squid was cultivated without a powder ion exchange resin sheet and seawater when squid was cultivated by floating an adsorption sheet containing the powder ion exchange resin of the present invention 10 mm). The results are shown in FIG. The vertical axis in FIG. 1 indicates the wavelength range (nm), and the horizontal axis indicates the absorbance. In addition, UV absorption characteristics (cell length: 10 mm) for treated water purified by passing through a column using a non-woven sheet containing a powder ion exchange resin as a filtration layer when sea squid is bred without adding anything. Asked. As a result, it was confirmed that the same characteristics as in FIG. We have pursued a filtration device that seems to be optimal for application. As a result, it was found that the pharmacological action of the powder ion exchange resin is effectively exhibited by applying the powder ion exchange resin adsorbent sheet to the air riff filter device.

It is important to develop a filter that acts on the whole livestock water and exhibits excellent filtration ability and purification ability. If it is an aquatic animal, it is exhibited as a pharmacological action.

About 10 liters of powder ion-exchange resin-containing adsorbents were filled in the airlift filter shown in FIG. Since seawater is mixed with squid from the transport truck at the same time, the transparency of the seawater immediately after the introduction decreases, the harmful nitrogen component is also high, the majority of squids are weakened at the time of arrival, and some squid spits ink, the next day The majority of squids died, but by installing the airlift filter tank, the clarification of seawater rises after several hours, and the squid ink spewed by a few squids is dispersed throughout the tank. Without any problem, it was confirmed that the air lift type filtration device was efficiently inhaled and a clear treatment liquid was obtained. There is a large difference between the ultraviolet absorption of seawater before installing the airlift filter and the ultraviolet absorption spectrum of seawater after installation, and the absorption spectrum between 250 nm and 200 nm is the same as that shown in FIG. It confirmed that the same tendency was shown. The nitrite nitrogen concentration was 0.8 ppm before the air lift filter was installed, but the concentration in the filtration treatment liquid was reduced to 0.05 ppm. Squid gathered in the gentle reflux water around the filter, and countless eggs were laid on the protrusions around the filter, and hatched squid was also observed. Yes, it can be estimated that it maintains an excellent environment as a place of growth.

Claims (2)

A powder ion exchange resin with an average particle size of 50 microns or less having a pharmacological action that instantaneously reduces components having ultraviolet absorption characteristics at 200 to 250 nm generated in contaminated farmed water, resuscitating drowned aquatic animals A powder ion exchange resin having an average particle size of 50 microns or less for purifying livestock feed water, characterized by 2. The powder ion exchange resin having an average particle size of 50 μm or less according to claim 1, wherein the contaminated storage water is squid ginger and / or seawater for transporting squid.

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