JPH07124555A - Water purifying and activating method and apparatus - Google Patents

Abstract

PURPOSE:To make an apparatus compact and to enhance the removing efficiency of impurities by injecting raw water into a medium fluidizing chamber having a medium consisting of an alpha-olefinic polymer and cristobalite to treat the same and sterilizing the treated water by a sterilizing lamp before filtering the same through a filter film. CONSTITUTION:When raw water is injected into a medium fluidizing chamber 12 from a jet nozzle 15, the raw water generates violent downward water streams (vortex streams) not only to apply acitive motion to numberless pellet like medii consisting an alpha-olefinic polymer and cristobalite but also to allow the medii to collide with each other. By this constitution, clusters of water molecules (aggregates of water molecules) present in raw water are destructed and the impure molecules in the raw water also become a state easily coarsely granulated or floculated. Thereafter, the treated raw water is passed through a mesh 16 to reach a tower top chamber 13 and allowed to fall along a quartz glass pipe 19 to be sterilized on the way by an ultraviolet sterilizing lamp 17 and subsequently filtered by a filter 14 consisting of hollow yarn membranes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to water purification, an activation method and a water activation device. More specifically, α-
Using a medium consisting of olefin polymer and cristobalite, vigorously stirring and flowing this with raw water,
The present invention relates to a water purification method for adsorbing and desorbing impurities contained in raw water to a medium, coarsening and removing the same, an activation method, and a water activation apparatus used for carrying out the method.

[0002]

2. Description of the Related Art Conventionally, many treatment systems such as those using activated carbon, those using ultrafiltration membranes such as hollow fibers, those using biological treatment, and those using a combination of these have been used for advanced water purification treatment. Has been developed and put into practical use. However, many of such treatment systems are not always sufficient, for example, the impurities to be removed are limited, they are not compact, running costs are high, and there are problems in terms of fully automatic operation and maintenance. I couldn't say that.

[0003]

SUMMARY OF THE INVENTION The present invention is different from the conventional fixed bed system in order to solve all the problems described above.
A fluidization treatment system is adopted, and the system is intended to be compact and to achieve a high removal rate of impurities.

[0004]

As a result of repeated studies to achieve these objects, the present inventor has found a method and apparatus capable of solving all the above-mentioned problems, and completed the present invention. Is.

That is, the present invention is as follows. 1. Raw water is injected into a medium flow chamber containing a medium composed of an α-olefin-based polymer and cristobalite to fluidize the medium, and the mediums are made to collide with each other to treat the raw water. A method for activating water purification, which comprises sterilizing the treated raw water treated in step 1 with a germicidal lamp and further filtering the treated raw water with a filtration membrane.

2. Medium flow chamber (12), overhead chamber (1
3), a water purification activation device comprising a germicidal lamp (17) and a filter (14), wherein a jet nozzle (15) is provided on the lower side wall surface of the medium flow chamber (12), and the medium is Inside the flow chamber (12), a pipe leading from the overhead chamber (13) to the filter (14) is provided, and further, a germicidal lamp (17) is arranged in the pipe. A water purification activation device.

The water purification activation device of the present invention will be described below with reference to FIG. 1 showing an example thereof. Figure 1
The water purification activation device (11) of the present invention shown in (1) comprises a medium flow chamber (12), a top chamber (13), a germicidal lamp (17) and a filter (14). This water purification activation device (1
1) is a relatively small cylindrical device whose outer wall is made of transparent acrylic resin and whose size is a little over 100 mm in diameter and about 350 mm in length. This water purification activation device (1
In 1), if necessary, a pretreatment device for raw water, for example, a pre-stage filter shown in FIG. 2 can be attached to the jet nozzle (15) through a pipe or a pipe.

The medium flow chamber (12) is located between the tower top chamber (13) and the filter (14), and the medium flow chamber (12) is preliminarily provided with numerous granular particles such as pellets. The medium is filled. An overhead chamber (13) is provided above the medium flow chamber (12). This tower top room (13)
The size of is sufficient if there is a space for the treated raw water to overflow. In addition, this tower top room (1
In 3), a gas vent hole for removing a gas body can be provided. A cylindrical quartz glass tube (19) leading from the overhead chamber (13) to the filter (14) is provided in the vicinity of the axial center (center) of the cylindrical medium flow chamber (12). , Furthermore, in the axial center of the quartz glass tube,
UV germicidal lamp without contact with quartz glass tube (1
7) is arranged.

As described above, the quartz glass tube (19) is provided in the medium flow chamber (12), and the ultraviolet sterilizing lamp (17) is further arranged in the quartz glass tube to concentrically form a double structure. This is an important point in achieving compactness of the device of the present invention. A jet nozzle (15) for supplying raw water into the medium flow chamber (12) is arranged on the lower side wall surface of the medium flow chamber (12). Then, the angle of the jet nozzle (15) is determined so that the jet flow jetted from the jet nozzle (15) is jetted downward from the horizontal axis while avoiding the central axis of the quartz glass tube (19). There is.

The lower end of the quartz glass tube (19) leads to a filter (14). Various filters can be attached between the lower end of the quartz glass tube (19) and the inlet of the filter (14). This filter (14)
Is composed of an ultrafiltration membrane composed of a large number of polysulfone-based hollow fibers. The outlet of the filter (14) leads to the treated water outlet (20).

The following is a method of water purification and activation.
The flow of raw water will be described in order with reference to FIGS. 1 and 2. Raw water is supplied from the jet nozzle (15) into the medium flow chamber (12) while being jetted as a jet flow. At this time, it is preferable to avoid the central axis of the quartz glass tube (19) and to inject downward so as to enhance the effect of the present invention.

The jet flow jetted from the jet nozzle (15) causes a violent water flow (vortex flow) in the medium flow chamber (12). Such a medium flow chamber (1
Due to the swirl flow generated in 2), the numerous pre-filled pellet-shaped media actively move with the water flow, and the media collaborate repeatedly.

The movement of the medium is sufficient up to or above the height of the mesh (16) installed on the top of the medium flow chamber (12), that is, to the entire inside of the medium flow chamber (12). It is important to spread to. The raw water becomes a jet flow and is jetted into the medium flow chamber (12) to form a water flow (spiral flow), and the mediums repeatedly violently collide with each other, resulting in clusters of water molecules existing in the raw water containing impurities ( The aggregate of water molecules is destroyed, and the water molecules are finely separated to become the original water molecules or close to them, while the impurity molecules in the raw water are easily coarsened or aggregated. It is thought to be.

As the medium used in the present invention, a granular (or pellet) medium composed of an α-olefin polymer and cristobalite is used. As an α-olefin polymer, an α-olefin polymer using ethylene, propylene, butene-1, hexene-1, etc. as a raw material,
Copolymers or blends thereof are used. As the cristobalite, a natural product or a product obtained by firing a natural product is used.

A preferred medium comprising the α-olefin polymer and cristobalite is, for example, a composition comprising 100 parts by weight of a linear ethylene-α-olefin copolymer and 20 to 250 parts by weight of cristobalite. Manufactured granular media or linear ethylene-
α-Olefin polymer 1 consisting of 100 parts by weight of α-olefin copolymer and less than 200 parts by weight of polypropylene 1
There is a granular medium produced by kneading 00 parts by weight and a composition comprising 20 to 250 parts by weight of cristobalite.
In addition, it is also preferable that such a medium contains an antibacterial agent, and it is possible to suppress the propagation of various bacteria when this device is not used.

Next, the treated raw water that has stayed in the medium flow chamber (12) for a certain period of time and has been treated is extruded to the top chamber (13) through the mesh (16) in the same amount as the amount of the raw water supplied. , Overflow and quartz glass tube (19)
Will fall downward along the. In the process of this fall, it is sterilized by the ultraviolet sterilization lamp (17). The ultraviolet sterilizing lamp can be adjusted in its strength, and other types of sterilizing lamps can be selectively used in place of the lamp.

The sterilized treated raw water then passes through a filter (14) composed of a polysulfone-based hollow fiber membrane. At this time, various bacteria, impurities coarsened in the treated raw water, echinococcus bacteria (egg of about 3 to 4 μm) and the like are removed. As the filtration membrane, for example, a polyolefin-based or polyacrylonitrile-based hollow fiber membrane or flat membrane can be used as well. Further, activated carbon may be incorporated in the filter (14) for use.

Finally, the treated raw water from which impurities are completely removed is discharged from the treated water outlet (20), and the discharged treated water is reused as activated drinking water composed of fine water molecules. To be done.

FIG. 2 shows a pre-stage filtration device which can be attached to the pre-stage of the present invention, if necessary.
In the case of raw water containing large impurities such as SS, it is important to use the removal device as illustrated in FIG.

In this pre-stage filtration device (21), the raw water is
From the outer periphery of the pre-stage filtration device (21) entering through the water supply inlet (23), a polyester-based nonwoven fabric filter material (2
2) (For example, a relatively large impurity in the raw water is filtered while passing through an Elves filter and a Dixie felt (both are filter media made by Unitika Ltd.)
Then, the water supply outlet (2
4). Water outlet (24)
The raw water exiting is then led through a flexible pipe (not shown) to the jet nozzle (15) of the present invention. It is preferable that the non-woven fabric filter material (22) used here also contains an antibacterial agent in advance.

Further, by increasing the capacity of the device of the present invention, not only tap water and well water are made into drinking water and activated, but also, for example, wastewater treatment system for golf course, purification system for reservoir, food factory. It can be incorporated into many systems such as total industrial wastewater treatment system including wastewater treatment reuse, pool water purification system, building maintenance purification system.

For example, in a lake water purification system, as equipment flows, for example, a pumping pump, a flocculation reaction tank, a rotary drum type filtration tank, a filtration pump, a filtration tank, a treated water tank, a raw water filter, an RO membrane pump, an RO unit, Treated water tank,
It is possible to purify water by constructing a system by forming equipment in the order of a fluidized tank pump, a water purification activator (fluidized tank, device of the present invention), and an adjusting tank. For this system,
By using the compact device of the present invention, a movable purification system that can be mounted on a truck or the like can be provided.

[0023]

EFFECT OF THE INVENTION High removal rate In addition to organic substances, bacteria, Escherichia coli, Echinococcus, etc.,
Highly and easily removes metal ions such as iron, manganese, calcium, and magnesium, chlorine ions, fats and oils dissolved in water, total nitrogen (TN), total phosphorus (TP), etc. be able to. Decolorization of raw water,
It is also very effective for deodorizing. Compact The advantages are a small installation area, a large amount of processing with a small device, and portability.

Low running cost Compared with the conventional treatment method, it can be operated continuously for a long time. The life of the filter (14) is dramatically extended. It has advantages such as easy operation automation, easy maintenance and inspection. As a side effect, the rice cooked with this activated (cluster-divided) water is delicious, and the rice is always fresh (so-called water-retaining), so the shape of the rice grains is Unexpected effects such as the fact that it does not change forever and that frozen rice can be stored for a much longer period than before will occur.

[0025]

EXAMPLES The present invention will be further described below with reference to examples, but the present invention is not limited to these examples.

[0026]

Example 1 Tests were performed using groundwater as raw water. Figure 1
The raw water was jetted from the jet nozzle of FIG. 1 at a supply rate of 1000 L / hr using the apparatus of No. 1 and sent to the medium flow chamber. The medium, which had been placed up to half the height of the medium flow chamber, collided violently with the water flow (vortex flow), and the treatment of raw water began. As a medium, a linear ethylene-butene-1 copolymer (manufactured by Union Carbide Co., D
A particulate medium obtained by kneading a composition comprising 100 parts by weight of FDA-1137) and 150 parts by weight of cristobalite (Nittetsu Crisvar) was used. The results are shown in Table 1. In addition, in the column of groundwater in Table 1, the impurity concentration in the raw water changes throughout the four seasons, so the variation is shown. Moreover, when rice was cooked with the obtained treated water and a test was conducted, an unexpected effect as shown in the effect of the invention (paragraph) was obtained.

[0027]

Example 2 In order to remove all nitrogen and all phosphorus in raw water, two kinds of pond water at a golf course were used as raw water. The amount of supply of each raw water was 15 T / hr, and it was carried out by an apparatus larger than that in FIG. The same medium as in Example 1 was used. Table 2 shows the treatment results of the two types of raw water.
And shown in Table 3. The measurement data in Tables 2 and 3 are
The following measurement method was used. PH; JIS K-0102 12.1 SS; Environmental Agency Notification No. 59 Appendix 6 BOD; JIS K-0102 21 COD; JIS K-0102 17 total nitrogen; JIS K-0102 45.1 total phosphorus; JIS K-0102 46.3

[0028]

[Example 3] Using tap water as raw water, a sterilization performance test was performed using an ultraviolet sterilization lamp with the apparatus shown in Fig. 1. As a test method, a sample was taken from the same device, a certain amount of general bacteria was smeared on a standard agar medium, and cultured at 37 ° C. for 48 hours to examine the number of viable bacteria. As a result, the number of viable bacteria in tap water at the start of operation was 6 cells / cc, but 1770 cells / cc passed water without turning on the ultraviolet sterilization lamp, and 5 minutes passed after turning on the ultraviolet sterilization lamp. 18
The number was pcs / cc (flow rate 130 L / hr). Also, when the device was left for 2 days, the viable cell count was 3000 cells / c.
However, the number after 5 minutes after turning on the ultraviolet sterilization lamp was 150 / cc. In addition, one device
3 hours after turning on the UV germicidal lamp after stopping for a while
The amount of water sampled after 0 seconds was 83 / cc.

[0029]

[Table 1]

[0030]

[Table 2]

[0031]

[Table 3]

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a water purification activation device of the present invention.

FIG. 2 is a cross-sectional view of the pre-stage filtration device attached to the pre-stage of the water purification activation device of the present invention.

[Explanation of symbols]

 11 Water Purification Activator 12 Medium Flow Chamber 13 Tower Chamber 14 Filter 15 Jet Nozzle 16 Mesh 17 UV Sterilization Lamp 18 Sterilization Lamp Outlet 19 Quartz Glass Tube 20 Treated Water Outlet 21 Pre-stage Filtration Device 22 Nonwoven Filter 23 Water Supply Inlet 24 Water Supply Outlet

Claims (2)

[Claims] 1. Raw water is injected into a medium flow chamber containing a medium composed of an α-olefin-based polymer and cristobalite to fluidize the medium, and the raw water is treated by colliding the mediums with each other. Then, the treated raw water treated in this way is sterilized with a germicidal lamp, and the treated raw water is further filtered with a filtration membrane to provide a water purification activation method. 2. A medium flow chamber (12), a top chamber (13),
A water purification activation device comprising a germicidal lamp (17) and a filter (14), wherein a jet nozzle (15) is provided on the lower side wall surface of the medium flow chamber (12), and the medium flow chamber ( The inside of 12) is provided with a pipe leading from the overhead chamber (13) to the filter (14), and further, a germicidal lamp (17) is arranged in the pipe. Water purification activation device.