JPH0365296A - Water purifying apparatus - Google Patents

Abstract

PURPOSE:To perfectly decompose the contaminant in sewage by providing a stirring and mixing apparatus sending fine air bubbles and a biological auxiliary solution accelerating the growth of bacteria into sewage sown with bacteria decomposing the contaminant. CONSTITUTION:A stirring and mixing apparatus (containing a motor 15) sending fine air bubbles and a biological auxiliary solution accelerating the growth of bacteria into sewage sown with bacteria decomposing contaminant is provided. Subsequently, the motor 15 of said stirring and mixing apparatus is driven and air bubbles and the biological auxiliary solution in a container 17 are discharged sewage from the outlet 9 at the lower end of a gap 6 to purify sewage under stirring.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a water purification device for purifying sewage and the like.

[Conventional technology]

Domestic and industrial wastewater is discharged into sewers and rivers either as is or after being purified to some extent. These wastewaters cause sludge and bad odors, reduce the oxygen content in the water, contaminate fish and other living things, and endanger their survival.
are doing.

If this situation is left unchecked, rivers will only serve as sewage channels for household and industrial wastewater (and the lakes, marshes, or oceans at the end of rivers will become garbage dumps, as is the case in Kasumigaura, the Seto Inland Sea, etc.). It is clear from reading newspapers reporting on pollution. Endangering the survival of fish living in rivers and the sea not only means that they will no longer be able to obtain food from rivers and the sea, but will also harm other people, including humans. It destroys the ecosystem and threatens human survival.

[Problems with conventional technology]

There is a method of filtering factory wastewater, etc., which is a cause of environmental deterioration, but filtration is done physically, and aqueous solutions and substances smaller than the size of the filter will pass through. There is also a method of neutralizing water by adding chemicals, but even with neutralization, it is not always possible to regenerate water that can be inhabited by fish and other creatures.

In order to solve the above-mentioned problems, bacteria that decompose pollutants in wastewater have been developed, and bacteria are stirred into the wastewater. However, a blower-type (water wheel) or ejector-type (injection) type stirring device cannot sufficiently stir, and has the disadvantage that only a portion of the material can be decomposed.

In order for bacteria to fully demonstrate their abilities, they need nutrients necessary for self-replication, and if the bacteria are aerobic, the wastewater must contain sufficient oxygen. However, conventional water purification devices cannot do this, and the sewage is discharged into rivers without being sufficiently decomposed, causing the above-mentioned pollution problem.

[Purpose of the invention]

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a water purification device that can completely decompose pollutants in wastewater at a much lower cost than conventional methods.

[Structure of the invention]

For the above purpose, the present invention is provided with an agitation mixing device that feeds fine air bubbles and a bio-auxiliary liquid that promotes the growth of the bacteria into wastewater in which bacteria that decompose pollutants are inoculated, The air bubbles and the bioauxiliary liquid are stirred into the water by driving the mixing device.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail based on embodiments shown in the drawings.

FIG. 2 is a sectional view showing the principle of a stirring and mixing device for liquid and air used in a water purification device, which is an embodiment of the present invention.

This stirring and mixing device is provided with a cylindrical rotating body 1 that rotates at high speed across a gap 6 in a cylindrical casing 2,
A regulating member 11 is attached to the tip of the rotating body 1 and has a large number of air holes 10 on its circumferential surface and regulates the direction of water flow.

The operation of the stirring and mixing apparatus shown in FIG. 2 will be explained below.

The upper part of the casing 2 is provided above the water surface 3 as shown in FIG. 2, and the air intake port 5 at the upper end of the gap 6 formed between the casing 2 and the rotating body 1 protrudes into the atmosphere 4. . Here, the rotating body 1 is driven by a motor (not shown).
For example, when rotated at 7000 rpm, the water in the gap 6 formed between the rotating body 1 and the casing 2 becomes a vortex at a uniform speed, and this vortex draws air into the water from the air intake 5. Initially, the bubbles taken in are quite large, but when subjected to the action of high-speed vortices, due to the difference in physical properties such as viscosity and weight between air and liquid, the bubbles are broken into small pieces and move inside the gap ε as shown by the arrow 12. At the outlet 9 provided at the lower end of the zero gap 6, which moves in the direction of , air bubbles have a size of about 1/100,000 and are discharged into the water.

At this time, if air is sent into the interior 7 of the rotating body 1 as shown by the arrow 8, air bubbles from the air holes 10 of the regulating member 11 provided at the bottom of the rotating body 1 that regulates the direction of water flow will The flow of water is regulated in all directions forming 90 degrees with the rotating body 1, including to the left, right, back, and front of the drawing.

The fine bubbles released from the outlet 9 provided at the bottom of the gap 5 have very little buoyancy because of their small size, and it takes a long time for them to rise to the water surface 3. When the same volume of air is released into water, the smaller the bubble, the larger the contact area between the air and water, and the higher the degree to which air dissolves in water. The smaller the size of the bubble, the less its buoyancy, and the longer it stays floating in the water, and the larger the area in contact with the water, which results in sufficient agitation of air and water ε. conducted an experiment, and it was confirmed that the bubbles released from the outlet 9 floated in the water just like smoke released into the air.

FIG. 1 is a partial sectional view of a stirring and mixing device for stirring fine air bubbles and a bioauxiliary liquid in water, and is fixed by a support member 13. FIG. The difference from the stirring/mixing device shown in FIG. 2 is that a water inlet 16 is provided at the top of the container 17 for the bioauxiliary liquid to be stirred in water, the members attached thereto, and the casing 2.

The operation of this stirring and mixing device will be explained below.

When a porous material 20, to which countless bacteria in a napping state that decompose contaminants in wastewater are attached, such as serastraw or polyurethane, is floated on the water surface 3, the moisture wakes the bacteria from their napping state and makes them active. and begin to float around the porous material 20. When the power of the motor 15 is turned on and the rotating body i starts rotating, a high-speed eddy current is generated in the gap 6, and air from the atmosphere flows from the air intake port 5 provided above the gap 6, and water flows into the casing. From the water inlet 16 provided in 2, and the bioauxiliary liquid enters the container i
7, through the valve 18, and from the pipe 19, each of which is drawn into the vortex generated within the gap 6. The water sucked into the gap 6 from the water intake port 16 contains a large number of bacteria floating around it.

As explained in the stirring/mixing device shown in Fig. 2, the air taken in by the high-speed vortex flow is broken down into small pieces, and the bacteria and bioauxiliary liquid are also broken down into very fine pieces while moving inside the gap 6. When discharged from the outlet 9 provided at the lower end of the zero chamber B6 moving in the direction shown by 12, the particulate air bubbles, bacteria, and bio-auxiliary liquid are sufficiently agitated and harmoniously integrated. The air bubbles etc. released from the compressor 14 are scattered into the water by the action of the air that passes through the inside of the rotating body 1 from the compressor 14 and is output from the air hole 10 of the regulating member 11.

As explained in the prior art section, in order for bacteria to demonstrate their ability to decompose pollutants in wastewater, an environment must be in place for bacteria to thrive and self-propagate.For this reason, aerobic bacteria They need oxygen in the water and nutrients to strengthen and self-reinforce. Although this was understood, inadequate agitation means did not provide the bacteria with sufficient oxygen and nutrients (biosupplement), which prevented them from growing or reproducing on their own.

However, with the stirring and mixing device shown in Figure 2, the bacteria, particulate air bubbles, and bio-auxiliary liquid are mixed together and float in the water, causing the bacteria to grow and self-propagate. When all the conditions are met, it becomes possible to fully demonstrate this ability.

Note that when the air bubbles become fine particles of 1/00,000 [03], they are ionized and easily adsorbed to pollutants, and work to decompose them.

Therefore, the synergistic effect of the ionized fine air bubbles and the bacterial action promotes the decomposition of pollutants and further enhances the purification effect.

If the outlet 9 for air bubbles etc. is provided near the bottom of the water, no matter how small the air bubbles are, they will always rise, and the air bubbles and bio-auxiliary liquid will be stirred throughout the water, and will have a purifying effect on the entire water. It becomes possible to do so.

In the embodiment shown in Fig. 2, bacteria were adsorbed onto a porous ceramic 20, etc., and this was floated on the water surface 3, but in the same way as the bio-auxiliary liquid, it was placed in a container, water was poured there, and a vibrator was used to make the gap 6. Even if the water is injected into the water, there will be a large number of bacteria in the water, which will be stirred into the water together with the microparticle air bubbles and the bio-auxiliary liquid, producing the same effect as in the previous example.

In order to effectively promote the purification effect of sewage, it is sufficient to stir the bacteria together with the microparticle air bubbles and the bio-auxiliary liquid into the water. (Even if it is injected into the rotating body 1, the regulating member 11 will be mixed with the air sent from the compressor 14.
It is discharged into the water from the air hole 10 of the air hole 10, and at this time, it is stirred by the vortex flow from the outlet 9 of the gap 6, and the purification effect is promoted.

In cold regions, the temperature in wastewater is low, allowing bacteria to grow.
Sometimes the environment is not set up for self-propagation, but when microscopic air bubbles are released into water, the pressure of these bubbles is higher than that in the atmosphere, causing the temperature to rise, and this energy is transferred into the water. According to this device, even in cold regions where conventional bacteria cannot be used due to transmission,
Purification becomes possible.

Here, we will explain how to purify the water in the aquarium used when raising and transporting live fish. In order for live fish to be kept or transported in a healthy condition, the water in the aquarium must contain sufficient oxygen and must not be contaminated by the excreted urine. be.

However, in the past, there was no means to remove nitrous acid, which is generated from urine and urine and causes the freshness of live fish to be lost. For this reason, fish farms had no choice but to dilute the nitrous acid by diluting large amounts of fresh water from another location, and to shorten the time required for this as much as possible to maintain freshness during transport. Therefore, if bacteria that decompose nitrite are adsorbed to a porous material in this aquarium and a stirring/mixing device is used as shown in Figure 1, it will be possible to easily decompose the bacteria and eliminate the need for fish farms. There is no need to pour in a large amount of new water, and freshness can be maintained even if it takes longer to transport than before.

Next, we will explain bacteria that decompose pollutants in wastewater. Depending on what kind of chemical properties the pollutants have, the type of bacteria that decompose them must be changed, so when using this water purification device, it is important to avoid contamination in wastewater! Investigate the chemical properties of FIX,
It is necessary to appropriately select bacteria that are effective in degrading this. If this bacteria is selected incorrectly, effective purification will not be possible.

Therefore, if we mix a large number of bacteria that decompose each of the many pollutants that are currently being discharged and stir it into water as shown in Figure 1, bacteria that cannot pass through the living environment will die, but suitable bacteria will There is a product called D-500 sold by Yamato Institute Co., Ltd., which is a mixture of many bacteria that grows, reproduces on its own, and decomposes pollutants, so you don't have to make the wrong choice. .

This D-500 is Ps eudomornus series 18
0 species Streptmyces series 102
Species Mi crococeus lineage 1
Type 0 Myco b aetherium type Engineering Type 2 Vibrio type
10 species Nocardia series
45 species of Flsvobacter series
15 species of Achromobacter
14 types of N1trobacter series
7 types of Aerobacter series
It is composed of 9 types of various bacteria, and it is used to treat fats, oils, petroleum, lignin, cellulose, etc. contained in various wastes.
Decomposes proteins, pectin, various chemicals, synthetic detergents, etc. These bacteria decompose organic waste into water and carbon dioxide, making it safe and free from secondary pollution.

Next, we will discuss the bio-auxiliary fluid that helps the bacteria grow and self-replicate.

In some cases, bacteria can grow and reproduce by using pollutants in the water as nutrients, but in other cases, the sewage environment can inhibit the growth and self-replication of bacteria.

Bacteria cannot decompose pollutants in such an environment, and even in such an environment bacteria's fraction M
In order for these bacteria to effectively exhibit their ability, it is necessary to supply essential nutrients (bio-auxiliary liquid) for the growth and self-replication of these bacteria.

Just as different types of bacteria decompose different types of pollutants, different types of bacteria require different bioauxiliary fluids to provide nutrients that help them grow and reproduce. Therefore, in order to support the growth and self-propagation of bacteria that decompose pollutants in certain sewage water, a bioauxiliary solution specific to the bacteria is essential and must be appropriately selected and supplied.

As for the bio-auxiliary liquid suitable for various bacteria with the above-mentioned trade name D-500, there is w-ioo sold by Yamato Institute Co., Ltd. This bio-auxiliary liquid is D~
500 contains nutrients suitable for various bacteria, and if you use this, you will not make a mistake in selecting a bio-auxiliary solution.

W-500, a bio-auxiliary liquid, contains phytic acid (chemical name: inositol hexaphosphate) and lecithin (chemical name: phosphatidylcholine) extracted from rice bran and soybeans using an alkaline fermentation method.

Phytic acid and lecithin contain sufficient nutrients necessary for the various bacteria mixed in D-100 to grow and self-propagate. It decomposes pollutants and promotes purification even under low temperatures.

As is clear from the above explanation, this water purification device is used for clean water,
It can be used to purify all kinds of water, including sewage such as domestic wastewater and industrial wastewater, and water from fish farms, as well as polluted rivers, swamps, lakes, and seawater.

〔Effect of the invention〕

By having the configuration as described above, the present invention can provide a water purification device that is inexpensive and has low maintenance costs and can completely decompose harmful components in wastewater.

[Brief explanation of drawings]

Fig. 1 is a diagram showing a water purification device for an aquarium in which bacteria are suspended, and Fig. 2 is a diagram showing the principle of a stirring and mixing device constituting the water purification device. Regarding the symbols used in the drawings, 1. Rotating body 2. Casing 3. Water surface 4. Atmosphere 5. Air intake 6. Gap 9. Outlet 10. Air hole 11. It is a regulating member.

Claims (3)

[Claims] (1) A stirring and mixing device is provided in the wastewater in which bacteria that decompose pollutants have been seeded, which feeds fine air bubbles and a bio-auxiliary liquid that promotes the growth of the bacteria into the water;
A water purification device characterized in that the air bubbles and the bio-auxiliary liquid are stirred into water by driving the stirring and mixing device. (2) A stirring and mixing device is installed in the water that feeds into the water a liquid containing bacteria that decomposes pollutants, a bioauxiliary liquid that promotes the growth of this bacteria, and fine air bubbles, and this stirring and mixing device is driven. A water purification device characterized in that the bacteria and the bioauxiliary liquid are stirred into water together with the air bubbles. (3) A stirring and mixing device is installed in an aquarium inhabited by fish and shellfish in which bacteria that decomposes nitrite have been sown, and which feeds a bio-auxiliary liquid that promotes the growth of the bacteria and fine air bubbles into the water. By being driven,
A water purification device characterized in that the bioauxiliary liquid and the air bubbles are stirred into water.