JPH04118098A - Water purifier - Google Patents

Abstract

PURPOSE:To enhance the performance of the purifier by forming the purifier with a water circulating passage provide with a water force-feeding means for circulating the water in a water tank, the water tank having an outflow passage at its and a bacteria immobilization bad place at the bottom of the water tank. CONSTITUTION:Circulation is repeated, and bacteria are proliferated in the immobilization bad 19 at the bottom of a water tank 1 as time goes by. Namely aerobes are grown at the central immobilization bad 25 where the flow rate is high and a large amt. of oxygen is supplied, and anaerobes are grown at the peripheral immobilization bed 26 where the rate is low and oxygen is hardly supplied. Consequently, when the water in a tank 1 contg. a component decomposed into the nitrate, org. matter generated in the tank 1 and ammonia is introduced, the ammonia is oxidized and decomposed into nitrates in the central bed 25 and decomposed into nitrogen and water in the peripheral bed 26 by the anaerobes by the action of the hydrogen generated from the org. matter in the circulating water. Besides, the pathogenic fungi for the fish proliferated in the tank 1 are sterilized by the UV ray of a heating and sterilizing unit 9.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a household or commercial water purification device for purifying water such as ornamental fish tank water, fish culture water, bath water, etc. This relates to water purification equipment that purifies sludge water by mixing it.

2. Description of the Related Art Conventionally, this type of water purification device has been proposed, for example, in Utility Model Application No. 58195.
As shown in Japanese Patent No. 697, it has a structure as shown in FIG. That is, an ultraviolet irradiation tank 32 equipped with an ultraviolet lamp 31 therein, a first microorganism treatment tank 33 and a second microorganism treatment tank 34 each equipped with a microorganism implantation body are connected in series.

Each space has an inlet 35, 36, 37 for introducing treated water from a fish breeding tank (not shown) or the treated water tank into the treated water tank, and an inlet 35, 36, 37 for introducing the treated water from the fish breeding tank (not shown) or the treated water tank into the treated water tank, and a port 35, 36, 37 for introducing the treated water from the fish breeding tank (not shown) or the treated water tank into the treated water tank. Outlet port 38.39 for sending out to breeding tank.
It is connected to 40 by a hof. Furthermore, there is no means for increasing the oil scum in each microbial treatment tank.

Problems to be Solved by the Invention In general, in aquarium fish tanks, the water in the tank has problems such as the generation of ammonia and dirt and the growth of pathogenic bacteria due to the metabolic effects of the fish, the decomposition of leftover rice cakes, and excrement. There is.

Furthermore, nitrite and nitric acid, which are generated during the decomposition process of nitrogen compounds such as ammonia, also pose a major problem.

In order to partially solve these problems, recently, purification filters using microorganisms and sterilization means using ultraviolet light have begun to be proposed, as shown in the above-mentioned conventional examples.

The above-mentioned conventional configuration in which microbial treatment tanks are simply connected in series has a problem in that the interior of the microbial treatment tank cannot be maintained in an optimal breeding state for aerobic bacteria.

Furthermore, the positions of the circulation pump, air insertion means, and their attachments, which are inserted into the circulation circuit between the fish breeding tank (not shown) and the microbial treatment tank, are not clearly indicated.

In the present invention, it is possible to effectively breed a plurality of bacteria that change their breeding state, such as aerobic bacteria and aerobic bacteria, to further improve purification performance, and to insert a circulation pump and air into the circulation circuit between the fish breeding tank and the treatment tank. The purpose of this system is to use a forced circulation port B configuration in which a means is provided, and to solve the problem that devices such as a circulation pump and an air supply means inserted into the circuit become inoperable due to excrement generated in a fish tank. .

Furthermore, the purpose is to improve the purification performance of the purification treatment equipment by using minerals as a fixed bed for bacteria.

Means for Solving the Problems In order to solve the above problems, the present invention provides a forced circulation channel in which a water pressure feeding means for circulating water in an aquarium and a purification unit are provided, an outflow channel on the bottom wall surface, and a water tank. The water purification system consists of a breeding aquarium with a fixed bed of bacteria at the bottom.

The fixed bacteria bed at the bottom of the tank is divided into multiple parts so that bacteria with different breeding conditions can breed at the same time.

Furthermore, the fixed bed for breeding bacteria is CaO,5i0z
, AlzOs , MgO, and FeO as the main components, and is composed of minerals containing a large amount of alkaline components.

Operation According to the present invention, organic substances such as fish excrement and uneaten rice cakes are first captured in the bacteria fixed bed at the bottom of the aquarium and gradually dissolved in the water.

Some of the captured organic matter is decomposed into ammonia and nitrate by bacteria cultured in a fixed bacterial bed at the bottom of the aquarium.Next, the aquarium water containing ammonia and nitrate generated by the decomposition of organic matter is removed by a circulation pump. The artificially cultivated anaerobic bacteria and bacteria activation substance flow into the first module, where they are sent to the purification unit and cultured there, and adhere to the surface of the mineral material in the module in a film form. , nitrates are decomposed. The nitrates are decomposed and removed, and the ammonia-containing aquarium water flows into the second module together with the oxygen-containing air sucked in by the oxygen supply means. Here, the ammonia contained in the aquarium water is efficiently oxidized to nitrate in an oxygen-rich atmosphere by an artificially cultured aerobic bacteria group and bacteria activator that adheres to the surface of the mineral material in the module in the form of a film. It is decomposed and the water is purified.

In addition, pathogenic bacteria of fish that have grown in the aquarium flow out from the first module and the second module and then flow into the ultraviolet bacteria unit where they are killed by ultraviolet rays.

Due to this purification and bacterial action, the water in the aquarium is always kept clean.

EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings. FIG. 1 is an external view of an aquarium fish tank to which the water purification device of the present invention is applied, and FIG. 2 is a diagram showing the principle of construction of the aquarium fish tank. In FIGS. 1 and 2, 1 is a water tank, and 2 is a stand for the water tank l, which has a water purification unit 3 built therein. The water purification unit 3 includes a first module 4 and a second module 5, each of which contains a fixed bed of microorganisms made of mineral substances and which are arranged in parallel, an oxygen supply means 6 that introduces external air into the flowing water by an ejector action, and The basic elements are a heating sterilization unit 9 equipped with a heater 7 and an ultraviolet lamp 8 provided upstream of the first module 4.5, and a circulation pump l101t valve 11. 1st module 4, 2nd module 5
bacteria are cultured. The bacteria being cultured can be selected as homologous or heterologous depending on the purpose of each module. The inflow path 12 of the circulation pump 10 is a solenoid valve 11
It communicates with the bottom of the aquarium l via. An outflow path 13 is attached to the heat sterilization unit 9, and purified water is sent to the water tank l through the outflow path 13. Reference numeral 14 denotes an air separator that separates fine air bubbles that have been sucked in by the oxygen supply means 6 and have flowed into the module.
Reference numeral 15 denotes an air tMi valve installed in the air introduction pipe 1G. 17 is a water leakage sensor that detects water leakage from the water tank 1 and the water purification unit 2.

18 is a control box containing a control circuit. Aquarium 2
A fixed bed 19 for culturing bacteria is placed at the bottom of the container.

FIG. 3 is a sectional view of the water tank 2. In the figure, reference numeral 20 denotes an inflow pipe, which has an inlet 21 around it and projects from the center of the tank bottom 22 into the tank. A fixed bed 19 is spread around the outer periphery of the inflow pipe 20 over the front surface of the tank bottom 22. 23 is a fixed bed dividing means that allows bacteria with different breeding conditions to breed simultaneously on the fixed bed 19. In this embodiment, the aerobic bacteria 25 are placed on the central fixed bed 24 side of the fixed bed 19, and the aerobic bacteria 25 are placed on the peripheral fixed bed side. Anaerobic bacteria 27 are cultured on the 26 side. 28 is a partition means for dividing the fixed bed 19 and the paving stones 29 of the water tank 2. In the partition means 28, a water inlet 29 with a wide opening area is provided above the fixed bed 24, and a water inlet 30 with a narrow opening area is provided above the fixed bed 26. By changing this opening area, the flow velocity pattern (flow rate, flow velocity distribution) of the fixed bed becomes a flow pattern suitable for bacterial growth.

Saddle rock type ceramics made from blast furnace granulation was used as the fixed bed. This granulated blast furnace is produced by rapidly cooling 0.5 tons of slag generated per 1.0 tons of molten iron from blast furnaces in steel plants, and is mainly used as a raw material for cement and as a soil improvement material. Blast furnace granulation is porous and glassy, including Cab, SiOx, and AI! The main component is Os, in addition to MgO.

Contains FeO etc.

In the above configuration, the circulation pump 10 is operated.

Organic matter such as fish excrement and leftover rice cake in the aquarium 1, as well as aquarium water containing ammonia and nitrates generated from the organic matter, passes through the water inlets 29 and 30 of the partition means 28, and passes through the fixed bed 19 at the bottom of the aquarium 1. There, large excreta and organic matter are collected and flowed from the inlet 21 to the inlet pipe 20. The aquarium water from which large contaminants have been removed further enters the circulation pump 10 via the inflow pipe 20 and the solenoid valve 12, is pressurized by the pump, and is mixed with air sucked by the oxygen supply means 6. The water passes through the first module 4, the second module 5, and the heat sterilization unit 9 and circulates to the water tank 1. In this circulation system, first, large excreta and organic substances that have an adverse effect on the mechanical parts of the purification unit 3 are collected. Organic matter such as fish excrement and leftover rice cake is filtered here.
The aquarium water containing ammonia and nitrates generated from organic matter is mixed with air sucked in by the oxygen supply means 6 and enters the first module 4 and the second module 5. Here, organic matter in water and ammonia generated from organic matter are derived from artificially cultured aerobic bacteria, voluntary bacteria, their activators, and oxygen supply means 6, which are attached to the surface of mineral materials from the beginning. It is oxidized and decomposed into nitrates by the oxygen contained in the air sucked in. This oxidative decomposition reaction of ammonia to nitrate is expressed by the following reaction formula.

N Ha” + 1.50! N O!-+ HzO
+ H' ■N Ox-+0.50x~No,
・・・・・・・・・ ■Next, the water containing the components decomposed into nitrates returns from the heat sterilization unit 9 to the aquarium 1, and is returned to the aquarium 1 together with the water and ammonia generated in the aquarium. heading to the bottom.

This cycle is repeated, and as days pass, bacteria are propagated on the fixed bed 19 on the floor of the aquarium l. That is, aerobic bacteria breed in the central fixed bed 25 where the flow rate is high and a large amount of oxygen is supplied, and anaerobic bacteria breed in the peripheral fixed bed 2G where the flow rate is low and almost no oxygen is supplied. As a result, when the aquarium water containing components decomposed into nitrates and ammonia generated in the aquarium 1 flows into the central fixed bed 25, the ammonia is oxidized and decomposed into nitrates, and the ammonia is oxidized and decomposed into nitrates. 26, it is decomposed into nitrogen and water by the action of hydrogen generated from organic matter in the circulating water by anaerobic bacteria. This decomposition reaction is expressed by the following formula.

N O3-+ A H-+Ht 10g...
...■ In this way, organic matter such as fish excrement and uneaten food in the aquarium tank 1, as well as aquarium water containing ammonia and nitrates generated from the organic matter, are purified.

Furthermore, pathogenic bacteria on fish that have grown in the aquarium are sterilized by the ultraviolet rays of the heat sterilization unit 9. Furthermore, the heat sterilization unit 9 also has the function of removing free chlorine in the circulating water,
It works to improve the breeding environment for fish.

As mentioned above, free chlorine contained in raw water, organic matter and ammonia generated in aquarium I, pathogenic bacteria for fish, etc. are decomposed by artificially cultured bacterial groups attached to the surface of mineral materials and oxygen. or sterilized with an ultraviolet lamp 23. The clean water passes through the outflow &8I3 and enters the ae separator 14, where the ultrafine bubbles mixed therein grow and return to the aquarium I.

On the other hand, the above-mentioned oxygen supply means 6 uses the jet stream formed by the supply nozzle 27 to spread the atmosphere from the air suction port 28 and send the air into the circulating water. If the amount is greater than that required for the oxidative decomposition of ammonia in formula (2), oxygen-rich water will return to the tank 1. As a result, unlike traditional aquariums, there is no need to install an aeration pipe and constantly aerate the tank with an air pump.

Blast furnace granules used as mineral materials are porous and vitreous, and as shown in Table 1, they are classified as Cab, Sin, etc.

A1. The main component is O, and also contains MgO, FeO, etc. This main component, CaO, is the second
H generated during oxidative decomposition of ammonia in module 5
A neutralization reaction is performed on (reaction formulas ■, ■), and water [
It works to suppress the drop in the pH value of the water in the water.

Table Composition of blast furnace granulated water (%) CaO5ins Alt03MgOFeO Others 43
．． 3 33.3 14.1? ,1 0.7 1
．． 5 Furthermore, many divalent positive ions such as calcium are present in water on the surface of mineral substances mainly composed of CaO and the like. This is because bacteria are generally negatively charged, so the mineral material whose surface is covered with positive ions serves as an optimal fixed bed for artificially cultured bacteria and oxygen.

Effects of the invention (1) Since a fixed bed for breeding bacteria is placed at the bottom of the fish tank, organic matter such as fish excrement and uneaten food is captured by the bacteria fixed bed at the bottom of the tank and is It gradually decomposes and dissolves in water. As a result, it is possible to prevent functional parts such as a circulation pump, an air supply means, and a magnetic valve inserted into the circulation circuit from becoming inoperable due to pickles or uneaten food.

Further, it is possible to eliminate the inoperability due to filter clogging that occurs when a filter is used, and the trouble of cleaning the filter to prevent this.

(2) Since the fixed bed at the bottom of the aquarium also has a bacterial purification effect, the capacity of the purification module inserted into the circulation circuit becomes smaller, making the purification unit more compact.

(3) As a fixed bed of bacteria installed in each water purification module, a saddle-shaped ceramic made of blast furnace granulation containing a large amount of CaO is used, so ammonia decomposes in the water in the water tank and acid is generated. However, the pH does not decrease and shift to the acidic side. Therefore, it is no longer necessary to neutralize the water by adding alkali to the aquarium water as in the past.

(4) An oxygen supply means for sucking atmospheric air by an ejector action is arranged upstream of the water purification module, and the amount of suction air is adjusted so that a larger amount of oxygen is supplied than the amount of oxygen required by the purification module. By setting , the water in the aquarium has enough oxygen dissolved in it. Therefore,
Unlike conventional systems, an air diffuser tube is inserted into the aquarium and air pumps are used to constantly kill bacteria, and the organic matter and ammonia generated in the aquarium can be decomposed from the start of operation. In addition, UV rays can kill pathogenic bacteria in fish, which can prevent fish from dying from disease.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a water purification device showing an embodiment of the present invention, Fig. 2 is a diagram of the principle of construction of the device, Fig. 3 is a sectional view of the purification unit of the device, and Fig. 4 is the same connection. A sectional view of the flange, and FIG. 5 is an exploded perspective view of the appearance of a conventional microbial treatment tank for water purification. 3... Water purification unit, 4... First module, 5... Second module, 6...
Oxygen supply means, 7... joint flange unit,
8... Hot water heating unit, 9... Ultraviolet sterilization unit. Agent's name Patent attorney Akira Okaji Two idiots

Claims (5)

[Claims] (1) A water purification device consisting of a forced circulation passage provided with a water pressure feeding means for circulating water in the aquarium, an aquarium having an outflow path at the bottom, and a fixed bacteria bed placed at the bottom of the aquarium. (2) The fixed bacterial bed has a fixed bed dividing means, and the fixed bed dividing means divides the bacterial fixed bed into a plurality of cells so that bacteria with different breeding conditions can be simultaneously propagated. The water purification device according to item 1. (3) a forced circulation passage provided with a water pressure feeding means for circulating water in the aquarium; an aquarium having an outflow path at the bottom; a bacteria fixed bed placed at the bottom of the aquarium; and the bacteria fixed bed. A water purification device consisting of a partition means provided on the top surface of the water purifier. (4) The water purification device according to claim 3, wherein the partitioning means is configured to be divided into a plurality of blocks having different flow resistance so that the flow of the fixed bed is divided into a plurality of blocks having different flow velocity patterns. . (5) Fixed bed is CaO, SiO_2, Al_2, O_3
The water purification device according to claim 1, which is made of a mineral material whose main components are , MgO, and FeO.