JPH0741246B2 - Water purification equipment for fish breeding - Google Patents

Description

TECHNICAL FIELD The present invention relates to a water purification device for fish breeding.

(Background Art) Fish are artificially raised in fishponds and the like. In this case, a high-density breeding plan is often established to intensively and efficiently produce and inhabit fish. That is, a large number of fish are raised in a relatively small land, that is, a small fish pond, and production efficiency is increased. In addition, the amount of water used is often restricted in some regions, and water is circulated and used.

In the case of intensive fish breeding as described above, and particularly in the case where water is circulated and used, how to keep water clear is an extremely important issue.

Conventionally, a water purifier in a fishpond or the like generally has a filter provided with a filter cloth and activated carbon as a filter at a position where circulating water passes. However, the removal of suspended solids with a filter cloth tends to cause the filter cloth to be clogged, and there is a limit to the adsorption of organic substances by activated carbon, and it is necessary to frequently replace the filter cloth and activated carbon. There was a limit to the water purification capacity, and there was also a limit to the degree of fish concentration and the amount of water used as circulating water.

(Object of the invention) Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to provide a water purification apparatus for fish breeding, which has a high water purification capacity and enables intensive breeding of fish. is there.

(Means for Solving Problems) In the present invention according to the above-mentioned object, a septic tank into which fish culture water is introduced, and a bottom surface of the septic tank inside the septic tank are immersed in the fish culture water so that a predetermined space exists. And a diffuser which is disposed in the lower part of the reaction tube and is connected to an aeration pipe to eject air into the reaction tube, and a compound having phenol and / or a phenol-exposed group in the reaction tube. A packed bed filled with an elution packing composed of microbial metabolites or humic substances containing
In the reaction tube, a packed bed filled with an eluent filler made of crushed stone containing activated silicic acid such as andesite and rhyolite, and sludge deposited in the septic tank connected to the bottom of the septic tank And a sludge pulling pipe for pulling out the sludge.

Further, it is more preferable to connect a filter device in which sponge pieces are filled as a filter medium to the septic tank.

(Operation) When air is ejected from the diffuser 22 into the reaction tube 14, the inside of the reaction tube 14 is kept in an aeration state and the circulating water comes into contact with the elution filler in the reaction tube 14.

Then, organic substances such as feces excreted by metabolism from fish come into contact with microbial metabolites or humic substances containing phenol and / or compounds having a phenol-exposing group, and rapidly bind, granulate, aggregate, or condense. , Polymerize, become macromolecules, and further contact with crushed stones containing activated silicic acid such as andesite and rhyolite to cause polycondensation reaction to humus and deposit sludge at the bottom of septic tank 10. To do. The sludge pulling pipe 26 deposited on the bottom of the septic tank 10 pulls it to the outside.

In this way, the organic substances in the septic tank 10 are efficiently sludged and removed, so that the water is purified and intensive breeding of fish becomes possible.

In addition, since the gas is aerated in the reaction cylinder 14, the amount of dissolved oxygen can be sufficiently secured.

Embodiment 1 A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

In FIGS. 1 and 2, reference numeral 10 is a septic tank having a bottomed cylindrical shape, and the bottom portion is provided in a sliver shape so that the central portion is lowered. In this embodiment, the septic tank also serves as a fish farm.

A water supply pipe 12 supplies water into the septic tank 10. This water is either fresh water or seawater depending on the type of fish.

Reference numeral 14 is a reaction tube having a cylindrical shape opened in the vertical direction, preferably a cylindrical shape. The reaction tube 14 is vertically supported on the bottom surface of the septic tank by a plurality of support columns 16 so as to be submerged in the center of the septic tank 10 and to have a space between the lower end and the bottom surface of the septic tank.

Packed layers 18a and 18b filled with two types of elution packing materials are arranged in the reaction tube 14. That is, the packing layer 18
A is filled with an eluent packing material composed of a microbial metabolite containing a phenol and / or a compound having a phenol-exposed group or a humus, and the packed bed 18b is activated with andesite, rhyolite, etc. Crushed stone containing silicic acid is filled as elution filler.

The aeration pipe 20 is drawn into the septic tank 10,
At the tip of the aeration pipe 20 reaching the bottom of the reaction tube 14, a diffuser for ejecting air from a small hole
22 is installed. Air is blown upward from the diffuser 22 into the reaction tube 14 so that the reaction tube 14 is aerated, and the reaction tube 14 and the septic tank 10 are aerated.
As indicated by the arrow in the drawing, a circulating flow is generated which circulates as follows: lower part of reaction tube → upper part of reaction tube → upper part of septic tank → lower part of septic tank → lower part of reaction tube, and this circulating water comes into contact with the two kinds of elution fillers.

Reference numeral 24 is a valve for adjusting the amount of air jetted from the diffuser 22.

Reference numeral 26 is a sludge drawing pipe, one end of which penetrates into the lowest part of the bottom of the septic tank 10 in a liquid-tight manner, and the other end of which is connected to a pump (not shown) so that the sludge deposited on the bottom of the septic tank 10 can be drawn to the outside. . 28 is a valve provided in the sludge drawing pipe.

Next, a microbial metabolite or humic substance containing phenol and / or a compound having a phenol-exposed group filled in the packed beds 18a and 18b in the reaction tube 14 and activated silicic acid content such as andesite and rhyolite The action of crushed stones containing is explained.

Organic matter (organic aqueous solution and water-containing organic mixture) rapidly binds, granulates, aggregates, condenses, polymerizes, and macromolecules by adding a microbial metabolite containing phenol and / or a compound having a phenol-exposing group. To produce a solid product (basic reaction 1).

If a substance containing a large amount of activated silicic acid is added during the above reaction, a polycondensation reaction for humification is caused (basic reaction 2).

The above-mentioned [compound having a phenol-exposed group] generally refers to an organic substance having a phenol-exposed group, and an enzyme having a phenol-exposed group is particularly effective. In addition, the [substance containing a large amount of activated silicic acid content] refers to a highly active and unstable substance such as andesite or rhyolite composition.

The difference between the basic reaction 1 and the basic reaction 2 is that the chelate structure in the reaction product is often more prominent in the substance produced by the basic reaction 2, and thus the removal of inorganic ionic substances from organic wastewater In the case of also aiming at, it is a good idea to incorporate a substance containing a large amount of activated silicic acid content into the reaction system. This is the basic reaction 1
It does not mean that the chelate structure does not develop in the reaction product of, but only that the development of the chelate structure involves more technical difficulties.

The method for obtaining a microbial metabolite or humic substance containing phenol and / or a compound having a phenol-exposing group is as follows.

In the above-mentioned bacteria group that can be used, sludge generated in livestock wastewater, etc. is deposited in the depressions, etc. provided in the drainage channel, etc., and a slow flow continues on the sludge deposition surface. It can be harvested relatively easily at the point where the above conditions have continued for a long period of several years or more. In such a place, if the sludge contains phenol and / or a compound having a phenol-exposing group, bacteria that can be used as inoculum can be obtained by collecting the wastewater mixed with sludge from the boundary between the sludge deposition surface and the wastewater. Flock is available. The presence of phenol and / or a compound having a phenol-exposing group can usually be detected sensuously by the generation of a phenol odor.

As described above, a microbial metabolite containing phenol and / or a compound having a phenol-exposing group or a bacterium adapted to calculate the metabolite can be obtained.

Next, the operation of the above embodiment will be described.

The fish are bred in the septic tank 10.

When the fur is ejected from the diffuser 22 into the reaction tube 14, the inside of the reaction tube 14 is put into an aeration state, and the circulating water comes into contact with the elution filler in the reaction tube 14 as described above.

However, as described above, organic substances such as feces excreted by metabolism from fish come into contact with microbial metabolites or humic substances containing phenol and / or a compound having a phenol-exposing group, and rapidly bind and form particles. , Agglomeration, condensation, polymerization, macromolecularization, and further contact with crushed stones containing activated silicic acid such as andesite and rhyolite to cause polycondensation reaction to humify and become sludge, and septic tank 10 Settle on the bottom. The sludge deposited on the bottom of the purification layer 10 is drawn outside by the sludge drawing pipe 26.

In this way, the organic substances in the septic tank 10 are efficiently sludged and removed, so that the water is purified and intensive breeding of fish becomes possible.

In addition, since the gas is aerated in the reaction cylinder 14, the amount of dissolved oxygen can be sufficiently secured.

Further, it goes without saying that water is appropriately replenished from the water supply pipe 12.

In the above embodiment, the septic tank also serves as a fish tank, but the fish tank is provided separately and the water in the fish tank is supplied to the water supply pipe.
The purified water may be caused to flow into the septic tank 10 by 12 and returned to the fish tank from the septic tank 10 by a circulation pipe (not shown).

FIG. 3 shows a reference example.

In this reference example, the sludge drawn from the sludge drawing pipe 26 is stored in the sludge culture tank 30. After all, in this sludge culture tank 30,
Leaching of packed bed 18a filled with elution filler of microbial metabolites or humic substances containing phenol and / or phenol-exposed compounds and crushed stone containing activated silicic acid such as andesite and rhyolite A packing layer 18b filled with a packing material is provided, and sludge drawn out together with some water is brought into contact with the above-mentioned two types of elution packing material and cultured.

That is, the sludge supplied together with water into the sludge culturing tank 30 comes into contact with microbial metabolites or humic substances containing phenol and / or a compound having a phenol-exposing group, and the sludge of general soil bacteria contained in the water and sludge is The aerobic and aerobic bacteria of which are adapted to contain phenol and / or phenol-exposed compounds in their metabolites, while the sludge itself contains phenol and / or phenol-exposed compounds It is made into a macromolecule by the action of crushed stones containing microbial metabolites or humic substances and andesite, rhyolite, and other activated silicic acid, and then cultured into macromolecules.

A part of the sludge thus cultivated in the sludge culturing tank 30 is returned to the reaction tube 14 by the sludge return pipe 32 as an inoculum. Then, among the general soil bacteria contained in water, aerobic bacteria and facultative anaerobic bacteria are acclimated to include a compound having a phenol and / or a phenol-exposing group in its metabolite. These constantly replenished phenols and / or compounds having phenol-exposing groups cause the organic substances in the water to become macromolecules and deposit in the septic tank 10 as described above.

The sludge gradually increases in the sludge culturing tank 30, so the sludge is separately extracted and treated. The extracted sludge is humified to a high degree of hardness, so it can be dried as it is as soil,
Alternatively, it can be used as a soil conditioner.

According to this reference example, since the microbial metabolites or humic substances containing phenol and / or compounds having a phenol-exposed group are constantly supplied, the packed bed 18a in the reaction tube 14 is
It requires less replacement of microbial metabolites or humus containing the phenols and / or compounds with phenol-exposed groups.

FIG. 4 shows still another embodiment.

In this embodiment, algae in the septic tank 10 are also removed. That is, as the alga grows in the septic tank 10 as the fish is raised and the dissolved oxygen is consumed, the fish breeding is adversely affected.

Therefore, the water in the septic tank 10 flows into the upper part of the filtering device 38 by the suction pipe 36 connected to the middle part of the septic tank 10. P is a pump therefor.

A net 42 is stretched on the bottom of the filter cylinder 40 of the filter device 38.
A large number of sponge pieces 44 are filled in the filter cylinder 40 above 42, and a stirring blade 46 is provided so as to be rotated by a motor 48.

A wastewater discharge pipe 50 and a return pipe 52 are connected to the wall surface of the filter cylinder 40 below the net 42.

54a, 54b, 54c are solenoid valves provided in the suction pipe 36, the waste water discharge pipe 50, and the return pipe 52, respectively.

Then, when the solenoid valves 54a and 54c are opened and the solenoid valve 54b is closed, and the water in the septic tank 10 is caused to flow into the filter cylinder 40 through the suction pipe 36 by the pump P, algae, dust,
Sludge or the like is adsorbed on the sponge piece 44, and the purified water is returned to the septic tank 10 from the return pipe 52.

When the sponge piece 40 is clogged, it is cleaned.

That is, while closing the solenoid valve 54c and opening the solenoid valve 54b,
By rotating the stirring blade 46 by the motor 48, the sponge piece 44 is stirred in water, the adsorbed and adhering algae and the like are separated from the sponge piece 44, and discharged from the wastewater discharge pipe 50 to the outside. .

As described above, according to this embodiment, algae, dust, and the like are removed together with the organic substance, so that the purification ability is further improved.

Although the present invention has been variously described with reference to the preferred embodiments, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. That is.

(Effects of the Invention) As described above, according to the water purification device for fish breeding according to the present invention,
By contacting fish culture water with a microbial metabolite or humic substance containing a compound having a phenol and / or a phenol-exposed group and an eluent filler of crushed stone containing activated silicic acid components such as andesite and rhyolite, Since organic substances contained in fish culture water can be effectively removed by forming macromolecules and depositing them, they have a high function of purifying fish culture water even in a fish pond where circulation of fish culture water is high. Highly intensive breeding is possible and production efficiency can be improved, which is extremely effective.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an example of a water purification device according to the present invention,
FIG. 2 is a plan view thereof. FIG. 3 shows a sectional view of the sludge culture tank. FIG. 4 shows another embodiment, (a) is an overall front view thereof, and (b) is a sectional view of a filtering device. 10 …… septic tank, 12 …… water supply pipe, 14 …… reaction cylinder, 16 …… support pillar, 18a, 18b …… packed bed, 20 …… aeration pipe, 22 …… diffuser, 24 …… valve, 26 …… Sludge draw-out pipe, 28 ... Valve, 30 ... Sludge culture tank, P ... Pump, 36 ... Suction pipe, 38 ... Filtration device, 40 ... Filtration cylinder, 42
...... mesh, 44 …… sponge piece, 46 …… stirring blade, 48 …… motor, 50 …… sewage discharge pipe, 52 …… return pipe, 54a 54b, 54c…
…solenoid valve.

Claims (2)

[Claims] Claim: What is claimed is: 1. A septic tank into which fish-cultured water flows, a reaction tube arranged so that a predetermined space is present in the septic tank, and a submerged bottom of the purification tank, and a reaction tube. A diffuser which is arranged at the lower part and which is connected to an aeration pipe and ejects air into the reaction tube, and elution filling consisting of a microbial metabolite or a humic substance containing phenol and / or a compound having a phenol-exposed group in the reaction tube. A packed bed filled with a material, a packed bed filled with an eluent packed material composed of crushed stone containing activated silicic acid such as andesite, rhyolite, and the bottom of the septic tank A water purification device for fish breeding, comprising: a sludge extraction pipe that is connected and that extracts the sludge accumulated in the septic tank. 2. The water purification apparatus for fish breeding according to claim 1, further comprising a filter device in which water in the septic tank is circulated and a filter medium made of sponge pieces is filled therein.