JPH11221573A - Water quality purifying material and water purifying method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water purifying material and a water purifying method remarkably inexpensive in the maintenance cost irrespective of the installation scale, and excellent in purifying efficiency, in a sludge treatment of a river, a marsh, a lake, etc. SOLUTION: The water quality purifying material is composed of mixing Ag or/and Cu with CaCO3 as a filler and cement of CaSO4 as a fixing agent and forming small sized particulate, and the water quality purifying material is collected in a mass of a several kg unit and is housed in a container provided many open holes, and the container is arranged in a water stream of a purifying object, thus the particulate group is brought into contact with water at all times to purify water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purification material for purifying water quality of rivers, swamps, lakes, and the like, and a method for purifying water.

[0002]

2. Description of the Related Art Microorganisms such as Escherichia coli and grape-like fungi, algae, and blue-green algae contaminate water quality, threatening river fish and other organisms to survive in water. For this reason, rivers and other environments are maintained to use the natural purification mechanism, and biological water treatment technology is introduced to purify water quality.

[0003]

However, rivers,
The amount of flowing water and stored water in swamps and lakes is enormous, and the purification technology for purifying it is inevitably large-scale, and the construction costs and long-term maintenance costs are extremely high. .

[0004]

SUMMARY OF THE INVENTION The present invention proposes a purifying material and a purifying method which are extremely inexpensive to maintain regardless of the size of the facility and have a high purifying efficiency, and a water purifying method according to the present invention. The material was formed by mixing Ag and / or Cu with calcium carbonate as a filler and cement or CaSO ₄ as a solid material to form small-diameter particles.

[0005] Further, this water purification material is made by adding pulverized coal as a filler. Further, these water purification materials are made of CaO or Ca (O (O) instead of calcium carbonate.
H) ₂ is added as a filler.

[0006] The water purification method according to the present invention comprises:
The granules obtained by the above are summarized in units of several kilograms,
It is stored in a container with a large number of openings, and the whole particle group is placed in the water stream to be purified, and the particle group is always in contact with water to sterilize and inactivate fungi and microorganisms in the water. Should be performed.

Ag and / or C added to water purification material
u may be added in any amount as long as it can form small-diameter granules when mixed with calcium carbonate as a filler and cement or CaSO ₄ as a solid material, and is subject to purification. The addition amount can be determined according to the state of water pollution in rivers, swamps, and the like. For example, depending on the state of water pollution, 80%
Up to 95 wt%, and 20 to 5 wt% cement, several p
Even when added at a pm level, the purification function is sufficiently exhibited. Ag and Cu are selected as fungicidal functional materials for fungi, and Ag alone or Cu alone can be used. When both Ag and Cu are added, even microorganisms having relatively strong cells, such as algae and blue-green algae, can be inactivated early and their growth can be suppressed. In this case, Ag is used in the form of a metal powder, the Ag metal itself has a bactericidal function, and Cu is C
The copper component used in the form of uSO ₄ and contained in the granules has a sterilizing function.

[0008] The calcium carbonate used as the filler is not limited to this, and CaO, Ca (OH) ₂ or the like may be used, or pulverized coal may be further added. The pulverized coal also contributes as a sterilizing function material, and also has a role of adsorbing and supporting the added Ag powder. Cement or CaSO ₄ is selected as a solid material, but milk lime solution can also be used in addition.

The water purification material is formed as small-diameter granules by the above components. The size of the granules is about 1 cm in diameter.
When used collectively in g units, the contact area of the whole water purification material with water can be increased.

In use, the granules are packed in units of several kilograms and stored in a container provided with a large number of openings. For example, they can be packed in units of 5 kg and filled into a synthetic resin bag having a large number of holes as a container. Next, the particle group together with the container is placed in a water stream to be purified, and the particle group and water are constantly brought into contact.

Although a plurality of containers are prepared to correspond to the amount of the water stream to be purified, care must be taken to prevent the containers from flowing out when arranging them in the water stream. When the container is immersed in water, water enters through many holes and comes into contact with the granules. This contact is made to any granular material in any container to purify the water. Ag or Cu as a sterilizing function material contained in the granules sterilizes Escherichia coli and staphylococci. At the same time, microorganisms such as algae and blue-green algae are inactivated and their growth is suppressed.

Ag and Cu are in contact with a large amount of water, and they decrease very little by a long period of contact. However, since they do not react with water, their durability is extremely high. According to the report, granules having a diameter of about 1 cm were immersed in flowing water and did not wear out for about eight months to one year.

Further, when the purification treatment is continued for a long period of one year or more, adhesion of algae, blue-green algae, etc.
The purification function of water may be reduced by the progress of oxidation on the surface of g. In such a case, a simple regeneration process may be performed in which air is introduced as bubbles into a container placed in water, and the particles are stirred in the container so that the particles contact and collide with each other. By this regenerating treatment, algae, blue-green algae and the like attached to the surface of the granular material can be easily removed, and the surface oxidized layer of Ag can be peeled off.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The specific contents of the present invention will be described below with reference to Embodiments 1 to 3.

First embodiment: 20 kg of calcium carbonate,
For 10 kg of cement, 5 liters of pulverized coal, and 5 liters of lime milk, Ag of fine powder was individually 5 ppm, 10
The concentration was adjusted in four stages of ppm, 100 ppm, and 200 ppm, and added to obtain four types of granules having different Ag concentrations.
Each granule was packed in polyvinyl bags of 5 kg each and 10 bags were prepared. Four agricultural drainage channels were selected, and a number of polyvinyl bags with different Ag concentrations were formed in each drainage channel. When water quality was inspected over time, Escherichia coli and staphylococci almost all died, including the drainage channel using the 200 ppm water purification material, including the drainage channel using the 5 ppm Ag water purification material. It was confirmed that the generation of algae and blue-green algae could be completely suppressed.

Second embodiment: calcium carbonate 20 kg,
For 10 kg of cement, 5 liters of pulverized coal, and 5 liters of lime milk, individually, 0.01% of CuSO ₄ and 0.1% of CuSO ₄ were added.
05%, 0.1%, and concentration adjustment in three stages and added.
Three types of granules having different u concentrations were obtained. And each granule,
Each 5 kg was packed in a polyvinyl bag and 10 bags were prepared. After selecting three agricultural drainage channels, polyvinyl chloride bags with different Cu concentrations were placed in each drainage channel, and a number of holes were opened.
All the bags were submerged. And was subjected to water quality inspection over time, the CuSO ₄ concentration including the drainages CuSO ₄ concentration was applied 0.01% of water purification material 0.1
It was confirmed that E. coli and staphylococci were almost completely killed and the generation of algae and blue-green algae could be completely suppressed up to the drainage channel to which the water purification material was applied.

Third embodiment: calcium carbonate 20 kg,
For 10 kg of cement, 5 liters of pulverized coal, and 5 liters of lime milk, Ag and CuSO _{4 of} fine powder were individually added at 5 ppm and 0.01%, and at 100 ppm and 0.05.
%, 200 ppm, and 0.1%, and added after adjusting the concentration in three stages to obtain three types of granules having different Ag and Cu concentrations. Each granule was packed in polyvinyl bags of 5 kg each and 10 bags were prepared. Select three agricultural drains,
Polyvinyl bags having different concentrations of Ag and Cu were formed in each drainage channel, and a large number of holes were formed in the bags, and then 10 bags were submerged. When the water quality was inspected over time, Escherichia coli and Staphylococcus almost completely died in all the drainage channels to which each of the water purification materials whose concentrations were adjusted in three stages was applied, and the algae and blue-green algae It was confirmed that the generation was completely suppressed. Further, in the water purification agent of the present embodiment to which Ag and Cu are added together, compared to the case of adding Ag alone and Cu alone shown in the first and second embodiments,
The effect of suppressing the occurrence of algae etc. more quickly was shown.

[0018]

As described above, the present invention purifies water by a water purification material which is made by adding Ag and / or Cu to a cement or a solid material of CuSO ₄ and adding small amounts of particles to a cement or CuSO ₄ solid material. Therefore, the formation and storage of the water purification material is easy and economical. Furthermore, this water purification material only needs to be immersed in the water flow for each container regardless of the application place, so it does not require large-scale construction or equipment, it is easy to maintain, and is this water purification material applied to the water flow about once a year? In the case of long-term use, simple regeneration treatment such as air agitation may be performed, so that it is very suitable for water purification of large and small rivers, swamps, lakes, agricultural drainage channels and the like.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI C02F 1/50 531 C02F 1/50 531H 531J 532 532A 540 540D 550 550B

Claims (4)

[Claims] 1. Ag and / or Cu are mixed with calcium carbonate as a bulking agent and cement or CaS as a solid material.
A water purification material formed by mixing O ₄ to form small-diameter particles. 2. The water purification material according to claim 1, wherein pulverized coal is further added as a filler. 3. The water purification material according to claim 1, wherein CaO or Ca (OH) ₂ is added as a filler in place of calcium carbonate. 4. The granules obtained in any one of claims 1 to 3 are collected in units of several kilograms, stored in a container provided with a large number of apertures, and the whole particle group is subjected to purification. A water purification method that is disposed in a water stream and constantly sterilizes and inactivates fungi and microorganisms in the water by constantly bringing particles into contact with water.