JP2794962B2 - Water purification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifier for purifying water in a water tank for a water purifier or a water tank for fish culture.

[0002]

2. Description of the Related Art Conventionally, this type of water purification apparatus is disclosed in, for example, Japanese Utility Model Laid-Open Publication No. 58-195697.
It has a structure like That is, an ultraviolet irradiation tank 41 having an ultraviolet lamp 40 therein, a first microorganism treatment tank 42 having a microorganism-implanted body, and a second microorganism treatment tank 43 are connected in series. Fish breeding aquarium (not shown) between each tank
Or inlets 44, 45, and 46 for introducing the water to be treated from the treated water tank into the treated water tank and a discharge port 4 for sending the treated water to the next treated water tank and the fish rearing tank.
7, 48, and 49 are connected by a hose. here,
No means for increasing the activity of each microorganism treatment tank such as oxygen supplementation is provided, and therefore no control means for the oxygen supplementing means is provided.

[0003]

Generally, in an ornamental fish tank, water in the aquarium is affected by metabolism of fish, decomposition of food left behind, and excretion of ammonia, dirt, and propagation of pathogenic bacteria. There are issues.

Further, nitrous acid and nitric acid generated in the process of decomposing a nitrogen compound such as ammonia have also been a major problem.

As a solution to these problems, a purifying filter utilizing microorganisms and a sterilizing means using ultraviolet rays have recently been proposed as shown in the above-mentioned conventional examples.

[0006] In the above-mentioned conventional configuration in which the microorganism treatment tanks are simply connected in series, there is a problem that the inside of the microorganism treatment tank cannot be maintained in an optimum breeding state of aerobic bacteria.

[0007] Further, the water pressure feeding means and the air insertion means inserted into the circulation circuit between the fish breeding aquarium (not shown) and the microorganism treatment tank, and the mounting position thereof are not specified,
Needless to say, no control means such as the circulation pump and the air insertion means are provided.

In the present invention, the aerobic bacteria are effectively propagated to enhance the purification performance, and the circulation circuit between the fish breeding aquarium and the treatment aquarium is provided with a water pumping means, a microorganism culturing module, and air flowing through the microorganism culturing module. When the capacity of the air supply means inserted in the circuit is reduced and air (oxygen) is exhausted,
It is an object of the present invention to emit a signal to the outside and to eliminate an oxygen-deficient state for fish bred in a breeding aquarium by emergency measures.

Another object of the present invention is to prevent the capability of the air supply means from being reduced and prevent water from flowing backward from the air inlet to damage the equipment and to prevent the surroundings from being flooded.

It is another object of the present invention to improve the purification performance of a water purification apparatus by using a mineral substance for a fixed bed of microorganisms.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a water pumping means, a microorganism culturing module, which is provided in order in a forced circulation channel for circulating water in a water tank, and a method for supplying air to the microorganism module. And an auxiliary air supply means at an air inlet of the air supply means mounted on the upstream side of the microorganism culturing module.

[0012] Further, the fixed bed for breeding bacteria is Ca
It is composed of a mineral containing a large amount of alkali components mainly composed of O, SiO ₂ , Al ₂ O ₃ , MgO, and FeO.

[0013]

According to the present invention, when the water is circulated by the water pumping means in the normal operation, the organic matter such as fish excreta and food left uneaten, and the ammonia and nitrate generated by the decomposition of the organic matter. Is mixed with the air sucked by the air supply means by the water pressure sending means and sent to the microorganism culturing module. Therefore, the ammonia in the aquarium is efficiently oxidized and decomposed to nitrate in an oxygen-rich atmosphere by the artificially cultured aerobic microorganisms and microbial activators attached to the surface of the minerals in the module in the form of a film. , The water is purified.

The pathogenic fungi of fish bred in the aquarium are:
After flowing out of the microbial culture module, it flows into an ultraviolet sterilization unit and is killed by ultraviolet light.

The water in the water tank is always kept clean by such purifying and sterilizing actions. Next, if the supply of air from the air supply means is stopped during the purification operation due to a decrease in the capacity of the water pumping means or an increase in the flow path resistance of the circulation flow path, water will flow to the air inflow path of the air supply means. Come in.
This is detected by the air flow detecting means, and a signal is sent to the control section to activate the auxiliary air supply means. As a result, the supply of the stopped air is restarted, and the outflow of water can be prevented. Further, an external signal such as an alarm device can be transmitted based on a signal from the airflow detecting means. By quickly repairing the equipment based on this signal, it is possible to prevent damage to the equipment and preserve the life of fish in the aquarium.

[0016]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an external view of an ornamental fish tank to which the water purification device of the present invention is applied, and FIG. 2 is a configuration principle diagram of the ornamental fish tank. 1 and 2, reference numeral 1 denotes a water tank, and 2 denotes a base of the water tank 1, in which a water purification unit 3 is incorporated. The water purification unit 3 includes a circulating pump 4 as a water pressure feeding means, an air supply means 5 for introducing external air into running water by an ejector action, and a microorganism having a fixed microorganism bed made of a mineral downstream of the air supply means 5. Culture module 6, heater 7
Heat sterilization unit 9 equipped with UV lamp 8
And an auxiliary air supply means 11 provided in the air inflow path 10 of the air supply device 5 as basic components. Further, a flow rate detecting means 12 with a check valve and an air solenoid valve 13 are attached to the air inflow path 10. Reference numeral 14 denotes an electromagnetic valve for separating the water tank and the water circuit, and the outlet of the electromagnetic valve communicates with the inflow path 15 of the circulation pump 4. Aerobic sterilization is cultured in the microorganism culture module 6. An outflow passage 16 is attached to the heat sterilization unit 9, and the purified water is sent to the water tank 1 through the outflow passage 16. Reference numeral 17 denotes an air separator that separates microbubbles sucked by the air supply means 5 and flowing into the microorganism culturing module 6. Reference numeral 18 denotes a water leak sensor that detects water leak from the water tank 1 and the water purification unit 3. Reference numeral 19 denotes a control box having a built-in control circuit as a control device, and reference numeral 20 denotes a feeder.

FIG. 3 is a sectional view of the air supply means 5, the auxiliary air supply means 11 and the air flow detection means 12 with a check valve. In the figure, reference numeral 21 denotes a supply passage communicating with the circulation pump 4;
Is a supply nozzle for speeding up the circulating flow, 23 is an air inlet through which air flows in by the suction action of the high-speed flow, and 24 is an outflow passage through which a mixed flow of the sucked air and the circulating flow flows out. The air inlet 23 is connected to an air inflow passage 10, and the air inflow passage 10 is provided with an auxiliary air supply unit 11, an air flow detection unit 12 with a check valve, and an air solenoid valve 13.
The auxiliary air supply means 11 includes an exciting coil 25, a plunger 26, and a check valve 27. The air flow detecting means 12 with a check valve includes a water receiver 30 having an air inlet 28 and an air outlet 29, and a magnet 31 provided therein.
Are enclosed by a float switch 34 comprising a float 32 having a specific gravity of 1 or less and a reed switch 33 and a check valve 35 comprising a ball having a specific gravity of 1 or less.

FIG. 4 is a control circuit diagram. In the figure, 3
6 is the ON state of the reed switch 33 of the air flow detecting means 12 with a check valve. An IC for outputting a drive signal to a circuit section in response to an OFF signal.
And the notification means 37 operates. Numeral 38 is a water temperature detecting means of the tank water, and 39 is a triac for driving the heater 7 by a signal sent from the water temperature detecting means 38 and the IC 36.

As the fixed bed, saddle rock type ceramics made from granulated blast furnace was used. This granulated blast furnace is manufactured by rapidly cooling slag generated from 0.5 ton per 1.0 ton of molten iron from a blast furnace of an ironworks, and is mainly used as a raw material for cement and a soil improvement material. Blast furnace water granulation is a porous vitreous material mainly containing CaO, SiO ₂ , and Al ₂ O ₃ , and also contains MgO, FeO, and the like.

In the above configuration, in normal operation, when the circulation pump 4 is operated, the air supply means 5 sucks air by an ejector action, and the air flows from the inlet 28 to the outlet 29. Then, the air flow detecting means 12 with the check valve becomes a state in which only the air is in the container 30, and the check valve 35
Is located at the lower part of the container, and the float 32 is located below the operating point of the reed switch 33. This is a signal that the air supply means 5 is operating normally and is input to the IC 36, the auxiliary air supply device 11 is turned off, the solenoid valve 13 is turned on via a relay, and the notification means is provided. From 37, a normal operation signal is output. As a result, when the circulating pump 4 is in the operating state, the organic matter such as fish excreta and leftover food in the aquarium 1 and the aquarium water containing ammonia and nitrate generated from the organic matter are supplied from the inflow path 11.
It enters the circulating pump 4 via the solenoid valve 10, mixes the air pressurized by the pump and the air sucked by the air supply means 5, passes through the microorganism culturing module 6, the heat sterilization unit 9, and enters the outflow passage 16, and The fine bubbles flowing into the microorganism culturing module 6 are separated by the air separator 17 and circulated to the water tank 1. In this circulatory system, organic matter such as fish excreta and leftover food in the aquarium 1 and aquarium water containing ammonia and nitrate generated from the organic matter are mixed with the air sucked by the air supply means 5 to mix the microorganism culture module. Enter 6. Here, the organic matter in the water and the ammonia generated from the organic matter are artificially cultured aerobic microorganisms and voluntary microorganisms originally attached to the surface of the mineral substance, and their activating substances and air supply means 5. It is oxidized and decomposed by oxygen contained in the air sucked in to form nitrate. The oxidative decomposition reaction of ammonia to nitrate is represented by the following reaction formula.

[0021]

Embedded image

Next, the water containing the components decomposed into nitrate returns from the heat sterilization unit 9 to the water tank 1, and together with the organic substances and ammonia generated in the water tank 1, the water again contains water.
To the bottom of

In this manner, the organic matter such as fish excreta and leftover food in the aquarium 1 and the aquarium water containing ammonia and nitrate generated from the organic matter are purified.

The pathogens of the fish bred in the water tank 1 are sterilized by the heat sterilizing unit 9 with ultraviolet rays. Further, the heat sterilizing unit 9 also has an action of removing free chlorine in environmental water, and functions to further enhance the fish breeding environment.

As described above, free chlorine contained in raw water, organic matter, ammonia, and fish pathogens generated in the water tank 1 are different from artificially cultured bacterial groups attached to the surface of mineral substances. Decomposed by enzymes, UV lamp 8
Sterilized in. The clean water enters the air separator 17 through the outflow passage 16, where the extremely fine bubbles mixed therein grow and return to the water tank 1.

On the other hand, the above-mentioned air supply means 5 sucks the atmosphere from the air inflow path 23 by the jet jet formed by the supply nozzle 22, and sends the air into the circulating water. Here, if the amount of oxygen in the sucked air is made larger than the amount required for the oxidative decomposition of ammonia in the formula, water containing oxygen returns to the water tank 1. As a result, there is no need to constantly perform aeration with an air pump as in a conventional water tank.

Next, in a case where the circulation circuit system of the aquarium water increases the flow path resistance of the circulation circuit due to excretion of fish or leftover food, and causes a decrease in the circulation flow rate, the ejector function of the air supply means 5 is used. And water flows out from the air inflow path 28 on the contrary. Then, the airflow detecting means with check valve 12 is
The inside is filled with water, the check valve 35 rises and closes the inflow port 28, and the float 32 reaches the operating point of the reed switch 33. This is a signal that the air supply means 5 is abnormal, and I
The signal is input to C36, the auxiliary air supply device 11 is turned on, the electromagnetic valve 13 is turned off via a relay, and the notification means 37 outputs an abnormal operation signal. As a result, the purifying unit 3 is
At this pressure, the air is sent to the air inflow path 28 of the air supply means 5 and returned to the same state as normal. At the same time, the cause of the abnormality that has occurred in the purification unit 3 is found and maintained by the abnormal operation signal, and the apparatus is returned to normal operation. In this way, the device is returned to normal operation without harm to the microorganisms and the reared fish of the device.

The granulated blast furnace used as a mineral substance is a porous vitreous material, as shown in the table, CaO, SiO, Si.
O ₂ and Al ₂ O ₃ as main components, and MgO, Fe
O and the like. This main component, CaO, acts to neutralize H ⁺ (reaction formula) generated during the oxidative decomposition of ammonia in the microorganism culturing module 6 and suppresses a decrease in the PH value of water in the water tank 1. I do.

[0029]

[Table 1]

Further, a large amount of divalent positive ions such as calcium are present in water on the surface of a mineral substance mainly composed of CaO or the like. This is because the microorganisms are generally negatively charged, so that the minerals whose surfaces are covered with positive ions are the most suitable fixed beds for the artificially cultured microorganisms and enzymes.

[0031]

As apparent from the above description, the present invention has the following effects. (1) By linking the airflow detection means and the auxiliary air supply means, even if a failure occurs in the device, the device can be returned to normal operation without harming the microorganisms of the device or breeding fish. it can. (2) Since it is an air supply means using an ejector action, it can detect air flow by detecting air and water whose physical properties are greatly different, and can circulate without using a flow rate sensor in the water circulation circuit system. An abnormality in a circuit system can be detected. (3) As a fixed bed of bacteria disposed in each water purification module, a blast-furnace granulated saddle-type ceramic containing a large amount of CaO is used, so that the water in the water tank is decomposed by ammonia and acid is generated. Even if the pH decreases, it does not shift to the acidic side. Therefore, it is unnecessary to neutralize the water by adding an alkali to the aquarium water as in the related art. (4) An air supply means for sucking air by an ejector action is disposed upstream of the microorganism culturing module, and the amount of sucked air is increased so that an oxygen amount larger than that required by the microorganism culturing module is supplied. By setting, the water in the water tank is in a state where oxygen is sufficiently dissolved. Therefore, even without the installation of the air pump, the bacteria do not die, and organic matter and ammonia generated in the water tank can be decomposed from the start of the operation.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a water purification device showing one embodiment of the present invention.

FIG. 2 is a sectional view of the configuration of the apparatus.

FIG. 3 is a sectional view of an air supply unit, an auxiliary air supply unit, and an air flow detection unit with a check valve of the apparatus.

FIG. 4 is a control circuit diagram of the device.

FIG. 5 is an external perspective view of a conventional microbial treatment tank for water purification.

[Explanation of symbols]

 Reference Signs List 3 Water purification unit 4 Water pressure feeding means 5 Air supply means 6 Microorganism culture module 9 Heat sterilization unit 11 Auxiliary air supply means 12 Air flow detection means with check valve 19 Control box

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ Identification symbol FI C02F 9/00 502 C02F 9/00 502N 503 503C (72) Inventor Nobuyuki Hirai 1006 Kadoma, Kazuma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. In-company (72) Inventor Keiko Nakanishi 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (56) References JP-A-1-27693 (JP, A) JP-A-63-236596 (JP, A (58) Field surveyed (Int.Cl. ⁶ , DB name) C02F 3/02-3/10 A01K 61/00 A01K 61/02-63/06

Claims (4)

(57) [Claims] 1. A water supply means, a microorganism culturing module, and an air supply means for sending air to the microorganism culturing module, which are sequentially provided in a forced circulation channel for circulating water in a water tank,
A water purification apparatus, wherein an auxiliary air supply means is provided at an air inlet of the supply means. 2. A water purifying apparatus according to claim 1, wherein said auxiliary air supply means is an air pump, and air flow detection means with a check valve is provided at an air inlet of said air supply means. 3. The air supply means comprises a water supply path, a supply nozzle disposed downstream of the supply flow path, an air induction path provided on a jet stream side formed by the supply nozzle, and an outflow path. The water purification device according to claim 1. 4. The water purifying apparatus according to claim 1, wherein the fixed bed on which the bacteria are settled is made of a mineral mainly composed of CaO, SiO ₂ , Al ₂ O ₃ , MgO, and FeO.