JPH06182345A - Water purification device - Google Patents

Abstract

PURPOSE:To eliminate the necessity of wiring connection work with a power source at the time of replacing an aluminum plate and utilize effectively power source electricity. CONSTITUTION:A device comprises an electrolysis cell 4 circulating waste water, a couple of electrode plates 5a and 5b provided in the electrolysis cell 4, a plurality of aluminum plates 6 disposed between the electrode plates 5a and 5b, and solar battery 7 connected with the electrode plates 5a and 5b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to laundry wastewater, factory wastewater,
The present invention relates to a water purification device for removing pollutants from various wastewater such as food wastewater and household wastewater.

[0002]

BACKGROUND OF THE INVENTION Various kinds of wastewater such as laundry wastewater, factory wastewater, food wastewater, household wastewater, etc. are turbid, colored components, bacteria,
Algae and the like exist as colloidal components having a size of about 1 μm to 1 nm. These colloidal components are usually negatively charged in water, repel each other when two particles are close to each other, and have a hydrophilic property to attract water molecules to the surface of the particles, so that they are stable. It exists in the state dispersed in water.

In order to destroy the stable state of such colloids and bring the particles into contact with each other to agglomerate, that is, to agglomerate, a flocculant for adding fine particles such as ions having an opposite charge to the colloidal particles to water is known. ing. Commonly used flocculants are metal salts that easily hydrolyze into positively charged hydroxide polymers, such as aluminum and iron salts. It is neutralized by a positive charge, and the particles are bound to each other by an intermolecular force, and the component of the polymer is adsorbed to both the colloidal particles due to its cross-linking action, whereby the colloidal particles are aggregated.

Conventionally, as a water purifier using the above-mentioned aluminum salt, a large number of aluminum plates are arranged in parallel in wastewater, and the aluminum plates are connected in parallel to a DC power source so as to alternately serve as a positive electrode and a negative electrode. A method is known in which aluminum ions are generated from a plate by electrolysis, and the aluminum ions are combined with hydroxide ions in water to be hydrolytically polymerized to generate positively charged polymer ions.

[0005]

However, in the above-mentioned conventional water purifying apparatus, since the aluminum plate is a consumable item, it is necessary to replace it with a new aluminum plate every predetermined period. In addition, since the positive and negative electrodes are connected to the DC power source, there is a problem that a great deal of labor is required for the wiring connection work at the time of replacement. Further, since the electrode voltage required for generating aluminum ions is 1.662V, a general power supply having a voltage higher than that cannot effectively use electric power, and most of it is consumed by water resistance. have.

The present invention is intended to solve the above-mentioned problems, and it is possible to eliminate the work of wiring connection to a power source when replacing an aluminum plate, and to effectively consume power in accordance with the output characteristics of the power source. It is an object of the present invention to provide a water purification device that can do the above.

[0007]

To this end, the water purifying apparatus of the present invention comprises an electrolytic cell 4 in which waste water is circulated, a pair of electrode plates 5a, 5b provided in the electrolytic cell 4, and a pair of these. 1. A plurality of aluminum plates 6 are arranged between the electrode plates 5a and 5b, and a solar cell 7 connected to the pair of electrode plates 5a and 5b. It should be noted that the numbers added to the above configurations are for comparison with the drawings for easy understanding, and the configurations of the present invention are not limited thereby.

[0008]

In the present invention, in the electrolytic cell 4, only the electrode plates 5a and 5b are connected to the DC power source so that they serve as the positive electrode and the negative electrode, and aluminum ions are generated from each aluminum plate 6 by electrolysis. It binds to the hydroxide ion in water and undergoes hydrolysis polymerization to generate positively charged polymer ions, and aggregates the colloidal components in the waste water.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a configuration diagram showing one embodiment of a water treatment apparatus of the present invention, FIG. 2 shows the electrolytic cell of FIG. 1, FIG. 2 (A) is a plan view of the electrolytic cell, and FIG. 2 (B) is a diagram. It is sectional drawing seen in the arrow direction along the BB line of 2 (A).

In FIG. 1, various kinds of waste water such as laundry waste water, factory waste water, food waste water, household waste water, etc. are stored from a supply pipe 1 into a pond or a waste water storage tank 2. The wastewater storage tank 2 is pipe-connected to the electrolysis tank 4 via the pump 3, and the wastewater in the wastewater storage tank 2 is sent to the electrolysis tank 4 by the pump 3 and purified there, and then the wastewater storage tank 2 Is circulated back to.

Electrode plates 5a and 5b made of stainless steel or carbon are arranged at both ends in the electrolytic cell 4, and a large number of aluminum plates 6 are arranged between the electrode plates 5a and 5b.
The electrode plates 5a and 5b and the pump 3 are connected to the solar battery 7 of the DC power supply. The aluminum plate 6 is not connected to the power supply.

FIG. 2 shows a support structure for the electrode plates 5a, 5b and the aluminum plate 6, and a pair of rectangular support frames 8a, 8b made of an insulating material are fixed in the electrolytic cell 4.
The electrode plate 5 is provided in the groove 9 formed in the support frames 8a and 8b.
The a and 5b and the aluminum plate 6 are inserted and fixed. Both electrode plates 5a and 5b are electrode terminals 10 provided on the outer wall of the electrolytic cell 4.
Wired to a and 10b.

The operation of the present invention having the above structure will be described. The waste water in the waste water storage tank 2 is sent to the electrolysis tank 4 by the pump 3, purified there, and then circulated so as to return to the waste water storage tank 2. In the electrolytic cell 4, only the electrode plates 5a and 5b are connected to a DC power source so that they serve as a positive electrode and a negative electrode, and aluminum ions are generated by electrolysis from the respective aluminum plates 6, which combine with hydroxide ions in water. Then, it is hydrolyzed and polymerized to generate positively charged polymer ions, so that the colloid components in the waste water are aggregated.
When replacing with a new aluminum plate every predetermined period, the aluminum plate 6 is removed from the support frames 8a and 8b and replaced with a new aluminum plate 6. At this time, since the aluminum plate 6 is not wired, wiring work can be omitted.

Since each aluminum plate 6 receives only a fraction of the power supply voltage depending on the number of aluminum plates 6,
Water resistance does not waste power.

[0015]

As is apparent from the above description, according to the present invention, an electrolytic cell in which waste water is circulated, a pair of electrode plates provided in the electrolytic cell, and between the pair of electrode plates. Due to the configuration including a plurality of arranged aluminum plates and solar cells connected to the pair of electrode plates, it is possible to eliminate the need for wiring connection work with the power source when replacing the aluminum plates. In addition, since a solar cell is used as a DC power source, maintenance and management of the power source can be facilitated in the purification of water in ponds, lakes and marshes. Furthermore, by optimizing the number of aluminum plates and other factors, Because the output can be used effectively,
The area of the solar cell can be reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a water treatment device of the present invention.

FIG. 2 shows the electrolytic cell of FIG. 1, FIG. 2 (A) is a plan view of the electrolytic cell, and FIG. 2 (B) is a sectional view taken along the line BB of FIG. Is.

[Explanation of symbols]

1 ... Supply pipe, 2 ... Pond or wastewater storage tank, 3 ... Pump, 4
Electrolyzer 5a, 5b ... Electrode plate, 6 ... Aluminum plate, 7 ... Solar cell 8a, 8b ... Support frame, 9 ... Groove, 10a, 10b ...
Electrode terminal

Claims (1)

[Claims] 1. An electrolytic cell in which waste water is circulated, a pair of electrode plates provided in the electrolytic cell, a plurality of aluminum plates arranged between the pair of electrode plates, and the pair of electrode plates. And a solar cell connected to the water purification device.