JPS58133895A - Method and device for water purification utilizing larva of frog - Google Patents

Abstract

PURPOSE:To purify sewage without depening on chemical treatments by keeping larvae of frogs freely in the sewage introduced therein with the sewage of water sources and allowing the larvae to eat water-bloom and planktons in the sewage. CONSTITUTION:A large-sized water tank 1 is provided in proximity to a water source pond 2, and a protective net 15 is installed in the upper part of the tank 1. The sewage in the pond 2 is fed into the tank 1, and a suitable number of the larvae of African Xenopus are kept freely therein. The larvae catch and eat the water-bloom and planktons suspended in th sewage. When the operator confirms that the water in the tank 1 is made clear by said eating, the operator opens a water discharge port 11 to feed the purified water through a water discharge pipe 9 into a storage pond. Upon ending of the discharging, the pond water is again fed into the tank and the purification treatment by the larvae is repeated. The bottom surface 3 of the tank 1 is formed to a conical shape and an impounding inlet 4 is provided at the center, from which the excrements of the larvae, earth, etc. are collected therein.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to nine water purification methods and a water purification device for the purpose of purifying sewage from a pond SFB or the like as a water source by using larvae of larvae.

First, in view of the fact that what is utilized in the present invention is the larva of the African frog, it is necessary to outline related matters regarding the African frog and its larva as a basis for proper recognition of the present invention. Dew. In other words, the African frog is a medium-sized larva native to South Africa, and was given this name because it has predatory claws on its hind limbs.The official scientific name is ``Xenopus'', and it Unlike the elms that breed once per season, they lay eggs throughout the year regardless of the season, and egg-laying can be artificially promoted by injecting hormones into the parent elms. o o.

Approximately 3,000 eggs are ovulated, and they are ovulated at an appropriate temperature, making artificial breeding possible.

African frogs are herbivorous as larvae, but become carnivorous after turning into frogs. Although they are amphibious, they can be easily kept in an aquarium by feeding on rounded carcasses that live in groups in menstrual water. This larva, which can demonstrate its suitability as a laboratory animal, metamorphoses and grows into a baby frog in about 40 days after becoming a frog.
As mentioned above, the larvae are herbivorous, preferring to feed on blue powder and plankton in the water, and grow happily in polluted water that is clouded with blue powder. Therefore, if a small glass container is filled with blue powder waste water and an appropriate number of larvae are released, after a certain period of time the larvae will eat up the blue powder in the water and the water in the container will easily become transparent. This proves that the larvae prefer to prey on blue powder, and that these larvae are natural enemies of blue powder in the natural world.

On the other hand, blue powder is microscopic algae such as flagellates and 1L green algae that occur on the stagnant water surface of ponds and lakes.
As is known, it increases the amount of water in the water through its assimilation effect, and also serves as food for fish, but if it grows in large numbers and the concentration in the water becomes too high, it will cause too much oxygen, which actually inhibits the respiration of fish. The dead green powder acts as a source of pollution, emitting evil effects, and becomes a source of pollution, especially in lakes and ponds near cities, where domestic wastewater flows in and becomes a source of nutrients, causing the blue powder to grow thickly and pollute the water. In addition to deteriorating the natural environment, this has a serious impact on the use of water resources for the many cities that depend on these lakes and marshes as water sources for drinking water. The blue powder floating in the water is small and large in quantity, making it difficult to filter, and water treatment using chlorine and activated carbon is not sufficiently effective, leaving residents troubled by deep tap water. There are concerns about the generation of carcinogenic trihalomethanes associated with water purification, and the removal of blue powder for the purpose of water purification is an urgent issue that requires damage prevention measures to be taken, and this must be resolved as soon as possible. It should be said that the time has come when it is necessary to do so.

The present invention is based on the above-mentioned foundation and aims to achieve the above object, and the details thereof will be explained below.

In the present invention, a volume of sewage from a lake or marsh is placed in a predetermined aquarium, and an appropriate number of African frog larvae are released into the tank according to the capacity to prey on blue powder, plankton, etc. in the sewage. The water purification process is carried out by removing blue powder etc. with the larvae and confirming that the pollution is clear, and then sending the purified water out of the tank. A preferred implementation is obtained and will be explained with reference to the drawings.

It is a large water tank constructed of concrete near the IFi water source 2, the bottom 3 forms a mortar shape, and a reservoir 4 is provided at the lowest central part. 8 indicates a water inlet; 9 indicates a drain pipe that connects the lower edge of tank W7 and a reservoir (not shown) via a drain pump 10; 11 indicates a drain port; shows. Reference numeral 12 denotes a drain pipe leading to a reservoir provided at the top of the tank W7, and 13 a drain pipe connecting the reservoir 4 and the reservoir via a drain pump 10'. 11’ll” is the drain pipe 12°13 respectively
Shows the drain outlet. In addition, each injection/drainage port 8.1], 1]', I
]” is provided with an on-off valve 69 and a protective net 14 at the opening portion.

15#i This is a protective net placed above the open aquarium 1. A large number of African frog larvae are released into the pond water injected into tank 1, but they are not shown.

Now, in the configuration described above, a large water tank 1 made of concrete or the like near the water source pond 2 is operated with a water injection pump 6, and pond water is injected through the water injection pipe 5, and after the water is filled, water is poured into the cypress. African frog larvae are released. Depending on the growth level of the larvae to be released, the amount of water per liter of water will be approximately 2. The water in the tank becomes transparent by feeding on the blue powder and plankton floating in it, and after confirming this state, the drain port 11 is opened, the drain pump 10 is activated, and the purified water is sent to the reservoir through the drain pipe 9. After the drainage is finished, pond water is injected again through the water inlet 8, and the water purification process is repeated by repeatedly removing blue powder caused by the larvae.In addition, a small amount of pond water is continuously poured in through the water inlet 8 to prevent water from facing the water. It is also possible to continuously drain the supernatant overflowing water from the drain port 11' opened in the wall at the same water level to the reservoir from the drain pipe 12.

The bottom surface 3 of the water tank is shaped like a mortar, and there is a basin 4 in the center, so that sediments such as excrement from larvae and sediment are removed from the central basin 4 after the supernatant purified water is discharged from the drain port 11. The trap is collected and sent to a separately provided septic tank (not shown) through a drain pipe 3 by operating a drainage pump 10' from the drainage port 11'' of the basin, where it is purified by microorganisms.

Yokouchi larvae feed on blue powder in the water, grow, metamorphose, and become raw salmon, but if necessary, adjust the number of larvae released, and if metamorphosis occurs, prepare new larvae separately. This is done by draining the supernatant water in these holding tanks and collecting the frogs in the holding tank 4, and taking this opportunity to clean the inner bottom surface of the tank 111'. In addition, each pouring and draining port 8.11, 11
', 11'' should be equipped with a Fi open/close valve to operate according to the water supply and water, and a protective net 14.15 should be provided at each section and the top of the tank to prevent larvae and frogs from getting out of the tank. This prevents dissipation and invasion of foreign enemies.Furthermore, when implementing the JJ class, it is possible to increase the water temperature in the tank by placing heat insulating material such as vinyl on the top of the tank, and it is possible to increase the water temperature in the tank. Depending on the topography, a natural drop or a power pump will be applied, and an electric automatic device will be used to switch the injection and drainage during transparency measurement, in order to save labor and improve functionality. By putting sewage from a water source pond such as a lake into a designated water tank and releasing African frog larvae into the tank, the nitrogen and phosphorus in the sewage can be used as a source of fertilization to capture and purify the blue powder that breeds. Since L7 is a biological treatment, there is no secondary separation of carcinogenic substances that occur with chemical treatments such as JII, and it is easy to pour pond water into the aquarium and drain water after purification. By providing a basin in the center of the bottom of the tank, larval excrement and other sediment can be collected and purified using microorganisms, resulting in high purification efficiency.In addition, the larvae released in the tank can grow and grow. They metamorphose and become frogs, but because the aquarium is equipped with #i prevention #IIR, they will never escape outside the tank by themselves, and will return to nearby lakes and ponds, causing deterioration of the natural environment. On the contrary, the African frog was able to meet the valuable demand as an experimental animal and as a teaching material for science education, and not only contributed to sewage purification as a larva, but also became useful in science and science as a larva. They will also play the role of two islands with one stone, being valuable and socially useful.

[Brief explanation of the drawing]

The drawings show an embodiment of the device of the present invention. Figure 1 is a plan view, I
P12 Diagram #i Vertical cross-sectional view 〇 Blind...Aquarium, 2...Water source pond, 3...
...Bottom, 4...Storage basin, 5. Water injection pipe,
9.12.13・・・・・・Drain pipe, 14.15
...Hamamatsu Biological Teaching Materials Co., Ltd., the owner of the defense net patent

Claims (1)

[Claims] 1) Sewage from a water source such as Swamp III is introduced into a predetermined tank, and an appropriate number of African frog larvae are released into the tank according to the capacity of the tank to eliminate blue powder and other substances in the sewage. This system utilizes frog larvae, which are made to prey on plankton, remove blue powder, etc. using the larvae, and after confirming that the pollution is clear, purify the water by sending the purified water out of the tank. 9. Water purification method 2) Wastewater from a water source pond such as a lake or pond should be introduced through a water injection pipe into a water tank with a protective net on the open top and a mortar-shaped bottom with a basin formed at the lowest part. , drain pipes are connected to the lower and upper edges of the tank wall, and to the far reaches of the reservoir, respectively, to lead to the reservoir, and a barrier net is installed at the tank opening of each injection and drainage pipe, and the water tank is closed. A water purification device using larvae of African frogfish, which is characterized by releasing an appropriate number of larvae of African frogfish into the interior according to the amount of water.