JPH0796275A - Water activator and production thereof - Google Patents

Abstract

PURPOSE:To purify water by accelerating the food cycle of the natural world using porous lapilli and black soil. subjected to oxidation treatment. CONSTITUTION:A mixture of lapilli and black soil is subjected to heating oxidation treatment in a copper sulfate soln. to finely grind lapillus like matter and clayey matter to form a powder. This powder is charged into water to be treated not only to increase the amt. of dissolved oxygen but also to rapidly propagate useful bacteria to purify water to be treated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water activator using naturally existing gravels and black soil and a method for producing the same.

[0002]

2. Description of the Related Art Treatment of industrial wastewater and domestic wastewater requires a large amount of investment for construction of sewerage and purification treatment facilities, and also a large amount of operation and maintenance costs. Moreover, after purification, water is discharged while containing a sterilizing agent such as chlorine gas, and there is a possibility that the natural biological system may be damaged.

[0003]

The problem to be solved by the present invention is to use natural materials to rapidly promote the food chain in the natural world, and to aquariums, pools, rivers, ponds, lakes and marshes, and industrial wastewater. , To purify domestic wastewater, etc. in a short time in a state as close as possible to the natural world.

[0004]

The water activator according to the present invention comprises a gravel-like material obtained from a mixture of oxidized volcanic gravel and black soil, and / or a powdery material obtained by pulverizing a clay-like material. There is a feature in becoming.

Further, the characteristic feature of this method for producing a water activator is that a mixture of volcanic gravel and black soil is kept in a copper sulfate solution at 80 ° C. to 100 ° C. while maintaining a PH value of 3.5 to 5.0. 1
It is to oxidize in 0 to 12 hours.

[0006] Black soil is a kind of volcanic ash soil, and is also called black boko, sound ground (onji), ascidian, is a black or black brown fertile soil containing humus, and is a natural material that exists widely in the natural world along with volcanic gravel. No cost is required other than transportation.

In producing the water activator of the present invention,
The proportion of lapilli and black soil is not a very important condition. However, in the case of mainly using lapilli depending on the application, in the case of using volcanic gravel 100 to black volcanic gravel 20 to 40 in volume ratio, or when mainly using black soil and pulverizing it after oxidation treatment,
10 to 40 volcanic gravel is mixed with 100 black soil. When used as a mixture of volcanic gravel and the above-mentioned black soil powder, the volume ratio of 100 volcanic gravel to black soil 200 to 500.
It is desirable to mix them at a ratio of. However, each is only one example and is not limited to these ratios.

The oxidation treatment is performed as follows. A copper sulfate solution prepared by dissolving 45 to 70 g of copper sulfate in 10 liters of water,
1.5% by volume in a mixture of volcanic gravel and black soil in an appropriate ratio.
Add about 2.0 times and stir lightly at 80-100 ° C for 1
Oxidation is performed by heating for 0 to 12 hours. The PH value is maintained at 3.5 to 5.0 during the oxidation process.

When the oxidation treatment is completed, a gravel-like substance covered with a clay-like substance and a clay-like substance are formed. The former becomes a solid gravel-like water activator, and the latter becomes a powdered water activator when naturally dried. Further, when the powdery matter is solidified with a binder such as starch paste and fusushi, it becomes a solidified water quality activator. As the binder, a natural material such as starch paste is preferably used, but a chemical paste can also be used.

No special equipment is required for the oxidation treatment, and an iron pot is sufficient. There is no particular difference between the source of volcanic gravel and the black soil, depending on the place of origin, as long as the local natural condition is maintained.

[0011]

[Operation] The lapilli and the black soil are sterilized by the oxidation treatment, and the black soil becomes a clay-like material having fine voids. Therefore, the gravel-like water activator has many small holes originally
The clay-like material covering the gravel-like material exerts a strong adsorptivity and an air-dissolving efficiency improving property, and becomes an extremely good culture medium of microorganisms effective for water purification. Also, the clay-like powder and the solidified one have the same function.

[0012]

Example 1 To 1 liter of tap water in a beaker,
A mixture of volcanic pebbles 100 and black soil 30 in a volume ratio of 0.1 to a volume ratio of a gravel-like water activator that has been oxidized.
As a control, the one to which nothing was added was allowed to stand for 72 hours, and then 1.6 g of sodium sulfite was added to each to give Do
The value was set to 0, 0.6 liter / min of air was sent to each beaker, and the change of Do value was investigated.

The Do value rapidly increased from the start of blowing air for 1 hour, and 4 hours after the blowing was stopped, the former reached 9.5 and the latter reached 9. After 8 hours, the former maintained 3.4 and the latter maintained almost 0.9. Do after 24 hours
A difference of 2.4 was confirmed. In the case of wild water (BOD about 15), almost the same changes were observed.

[0014]

Example 2 1 liter of industrial waste water (BOD 150) was put into a beaker, and 0.3% by volume was put into the beaker. As a control test, 1 liter of the industrial waste water alone was placed in a beaker. Both were aerated for about 30 minutes and then left. After a difference of 1.5 in Do value from the control industrial wastewater after 2 hours, this difference was maintained after 24 hours.

The gravel-like water quality activator is added to domestic wastewater and activated sludge (MLSS 1500) to industrial wastewater (BOD150).
In the case of adding it to the one to which the degree) is added, a high Do value can be secured and maintained as long as at least about 24 to 72 hours have elapsed, as compared with the case where no gravel-like water activator is added.

[0016]

[Example 3] Amount of water of about 1500 t, depth of about 0 to 5 m, about 200 carp (average body length of about 30 cm) inhabit, and the inflowing water was in the pond containing only rainwater, and the powder obtained by the oxidation treatment of Example 1 The water activator was sprinkled at a weight ratio of 0.01% with respect to the amount of water. Five days after spraying, a circulation device having a capacity of 1 t was installed, and a gravel-like water activator similar to that in Example 1 having a volume ratio of about 0.003% with respect to the amount of water was installed in the circulation device. It was placed on the shelf. Then, while sending 20 liters / minute of air into the circulation device, a pump of 270 liters /
The water of the minute pond was sent into the circulation system.

The following results were obtained 30 days after the start of pump operation. However, parenthesized water is in parentheses and the unit is mg / liter. The transparency is 10 cm in raw water and 82 cm after 30 days.
Met.

BOD 2.2 (16) COD 3.2 (15) SS 2.4 (35) Total nitrogen 0.46 (3.2) Total phosphorus 0.15 (0.15)

The changes of microorganisms inhabiting this pond are as follows. Species Raw water after 30 days Green algae / diatoms Very large Very small Oestis genus Very large Very small Biwakunsho Much Very small Senedestis Large Very small Spherotilus Large Very small Paramecium Medium Very small Volticera Very Very low Normal potato dendron Very low Normal Rotaria Very low Normal Filodina Very low Normal Monostila Very low Normal Ringworm Very low Normal Daphnia Low Normal Others Very low Very high

The water activator of the present invention is a water tank for pets,
Although it is effective for purifying the water in the commercial aquarium, the following features were found in the purification of the pond. That is, 24 hours after the use of the water activator, it can be confirmed that the Borticella is inhabited, and a wide variety of protozoa or metazoans inhabit in a short period. It should be noted that it is convenient to use a solidified water quality activator to purify the pet water tank.

Microorganisms, which are said to be the cause of red tide, are extremely reduced. The PH value is around 7.0 and the Do value is 4-5, which are stable. Furthermore, because the water environment was improved, active spawning of fish was observed, and water sparrows and other small animals were confirmed.

[0022]

Example 4 A treatment tank is provided in which the overflow water of the pretreatment tank flows into the aeration tank, the overflow water of the aeration tank flows into the sedimentation tank, and the treated water flows out from the sedimentation tank. The capacities are 12 liters, 60 liters and 6 liters, respectively.

First, 60 liters of activated sludge was added to the aeration layer,
0.18 liters (0.3% capacity ratio to activated sludge)
The gravel-like water activator of Example 1 is added, and intermittent aeration is performed every 12 hours for about 100 hours.

As a result, a good odorless activated sludge having thick ciliates, rotifers and other biological layers and having a large amount of dissolved oxygen was obtained. This activated sludge has good sedimentation and does not cause bulking.

About 6 liters of this activated sludge was put into a pretreatment tank, and industrial effluent having a BOD of about 550 was gradually increased from 20 liters on the first day to 80 liters on the 7th day and 120 liters on the 8th day and thereafter for 8 hours each. Then put it into the pretreatment tank. Then, 8 l / min of air is constantly sent to the pretreatment tank, and 16 l / min of air is constantly sent to the aeration tank.

From the 8th day, 120 liters of industrial wastewater,
As a result of daily injection for two months from May to June 1993, the following good treated water was obtained. However, the unit is mg / liter. The transparency is 1 to 9 cm of raw water
It became 100 cm or more after a month.

[0027]

The changes of microorganisms inhabiting the sludge of the aeration tank are shown below. Species Raw sludge 30 days after sludge Arcera Very high Low Aspidica High Normal Paramecium High High Low Rotaria Philodina Normal Normal Volticera Normal Normal Zo-Titanium Normal Normal Lithnos Low Normal White Bear Low Normal Améba Very Low Normal Nice Very Very low Normal Syatospira Very low Normal Co-Protes Very low Normal Platias Very low Normal Richen Very low Normal Prodton Very low Normal Lithnos Very low Normal Others Very low Very high

Further, industrial wastewater having a BOD of about 3500,
Even when treated with the treatment tank in which the amount of air blown to the pretreatment tank and the aeration tank is doubled and the amount of the gravel-like water activator added is tripled, good treated water can be obtained. Was given. The results are shown below (unit: mg / liter).

[0030]

Escherichia coli not seen in the raw water was 12 cells / ml after 40 days, and the transparency was 5 cm in the raw water, 4
It was 100 cm or more after 0 days.

The treatment of this industrial wastewater has the following features. Despite the high concentration of wastewater and sludge, it is sufficient to send an extremely small amount of air. The PH value of the aeration tank is
Although it has been relatively high at 7.5 to 8.3, it is 7.2 in the settling tank.
It is stable before and after, and the Do value during raw water addition is 8.3-
Although it will change to about 0.5, it will recover rapidly about 2 hours after the completion of charging.

Moreover, high-concentration sludge (MLSS10000)
Nevertheless, the sedimentation is almost good, and after 30 minutes, 63
0cc, 490cc after 60 minutes, 330c after 120 minutes
c, 300 cc after 180 minutes.

The microorganisms in the sludge inhabit a wide variety of species from protozoa to metazoa, and when about 24 hours have passed after the introduction,
The habitat of the bolticera can be confirmed. No odor is generated during the treatment of sewage, and the odor of raw water is removed to the extent that it cannot be felt in the pretreatment layer.

In treating industrial wastewater, BOD, CO
It is natural to secure a high removal rate of D and obtain stabilized treated water, but it has been said that it is difficult to remove nitrogen and phosphorus by the conventional activated sludge method. However, it has been confirmed that by adding the water activator of the present invention, not only BOD and COD but also nitrogen and phosphorus can be removed at a high removal rate. It was also confirmed that Escherichia coli can be released at a low level and can be discharged without the need for chlorine disinfection.

The excess sludge settled in the treatment tank has conventionally been treated as fertilizer or industrial waste after being dried or dehydrated. However, the excess sludge using the water activator of the present invention is reduced by about 40% in 5 days when 6 liter / min of air is sent per liter, and its treatment becomes easy.

Needless to say, the water activator of the present invention is also effective for treating domestic wastewater and domestic wastewater and wastewater containing manure.

[0038]

EFFECTS OF THE INVENTION The present invention is obtained by simply oxidizing naturally occurring volcanic gravel and black soil, and does not require any special treatment equipment. Tap water, water tank, pool, river, pond, lake, domestic wastewater, Industrial wastewater can be efficiently treated at extremely low cost.

Moreover, since the treatment is carried out by using microorganisms, it is not necessary to disinfect using chemicals after the treatment, and even if the treated water is discharged as it is, it does not have any adverse effect on the natural world.

Claims (3)

[Claims] 1. A water activator comprising a gravel-like material obtained from a mixture of oxidized volcanic gravel and black soil, and / or a powdery material obtained by pulverizing a clay-like material. 2. The water activator according to claim 1, wherein the powder is solidified with a binder. 3. A mixture of porous lapilli and black soil
In a copper sulfate solution at 0 ° C to 100 ° C, a PH value of 3.5
A method for producing a water-based activator, which comprises subjecting to oxidation treatment for 10 to 12 hours while maintaining at -5.0.