JPH06328080A - Electrolytic ion cohesion device - Google Patents

Abstract

PURPOSE:To separate and remove accurately even by means of a simple filter adsorption material by performing charged neutralizing colloidal particles and suspension particles dispersed in electrolyte by means of eluted ions from an anode, carrying out the cohesion of irons by the crosslinking action of an insoluble hydroxide an the van der Walls force and agitating and agglomerating ions by means of floating flow of gaseous foams. CONSTITUTION:Cathode cylinders 3 and anode cylinders 4 are set on an insulated ring 6 with a replenishing liquid opening 5 in a liquid tank 1. Therefore, the cohesion of fine particles in service water, sewage and cutting liquid and washing liquid for a machine tool is carried out to make the filter adsorption easy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a suspension contained in tap water, sewage, etc., a colloid component, an oil component in an aqueous cleaning liquid, sludge, an emulsified oil in a water-soluble cutting fluid, fine particles, etc. , Hydrogen generated by electrolysis of impurities that cause troubles, agitation force by oxygen bubbles and ions from the anode that perform charge neutralization and sometimes cross-linking action, and aggregate, agglomerate, float or precipitate by insoluble hydroxide, The present invention relates to an electrolytic ion aggregating apparatus that facilitates filtration and adsorption separation.

[0002]

2. Description of the Related Art Conventionally, solid-liquid separation in water and sewage has been problematic because it requires a vast facility area and processing time. In addition, there is no simple means for effectively removing oil and colloidal components that have been emulsified and suspended in an aqueous cleaning liquid and can be circulated for use. Further, there is no means for separating and removing cutting oil from the waste liquid of cutting liquid containing an emulsified liquid, commonly called "emulsion", and discharging only water as it is. Furthermore, it is possible to effectively and quickly separate and remove the white turbidity, oil that becomes an emulsion, oil that diffuses, suspends colloids, and suspended components that are mixed in the cleaning liquid used in the water-based cleaning machine, and discharge water. There was nothing.

Therefore, the applicant of the present invention compresses and fills an anti-hair-finished product such as a non-woven fabric made of a chemically synthetic fiber having no water absorption property such as polypropylene and polyethylene, and disperses the oil film on the liquid surface and the emulsified oil component. It was proposed to remove and separate the fine particles that are present. However, unlike the coarse suspension, the oil and particles finely divided into the colloidal region were not able to be filtered and adsorbed as they were.

[0004]

That is, the electrolytic ion aggregating apparatus of the present invention uses the same material for both the cathode and the anode in a liquid tank such as a washing machine, but a material that produces cations from the anode side during electrolysis. By providing an electrolytic tool configured as described above, the negatively charged colloidal components dispersed in the electrolyte solution are neutralized by the positively charged ions from the anode, enabling aggregation and flocking by the force of Van der Waals. By generating floating convection in the entire liquid tank by hydrogen bubbles from the cathode and oxygen bubbles from the anode, for example, micro flocs of several tens of microns collide with each other, agglomerate to several hundreds of microns or more, simple filtration, adsorption Also, the feature is that solid-liquid separation can be performed with high accuracy.

According to the present invention, the same material that generates positively charged ions from the side that has become the anode during electrolysis in a pollutant tank incorporated in equipment such as clean water, sewage treatment, washing machines and systems, is installed. Both electrodes are constituted by, and the negative charges of the colloid component and the suspension component to be removed in the electrolyte solution are neutralized by charge,
It is intended to provide an electrolytic ion aggregating device which can be coupled by a van der Waals force so as to form a floc.

Another object of the present invention is to provide an anode,
Aluminum, iron, copper, zinc, etc. are used for the cathode,
It is intended to provide an electrolytic ion aggregating device which can obtain positively charged hydroxide polymer polyvalent ions from an anode, which works most effectively for charge neutralization.

Another object of the present invention is to:
Provided is an electrolytic ion aggregating apparatus capable of reinforcing floc formation by using a material having a crosslinking action at the same time as charge neutralization by cations and hydroxides such as aluminum and iron for the anode and the cathode.

Still another object of the present invention is that the anode and the cathode are made of a material that produces ions having a charge neutralizing power such as aluminum and iron, and the anode and the cathode are provided at appropriate intervals. It is intended to provide an electrolytic ion aggregating apparatus capable of averaging the amount of abrasion due to elution on the side of switching and on the anode side and prolonging the time until exchange.

Still another object of the present invention is to crosslink the anode with an insoluble hydroxide such as aluminum or iron produced during electrolysis to make the agglomerates firm, further increase the flocs, and filter and adsorb. It is intended to provide an electrolytic ion aggregating device that can be easily made.

Still another object of the present invention is to use the same material such as aluminum and iron for the anode and the cathode, and switch the electrodes at an appropriate time so that the anode side is The electrolytic ion aggregating apparatus is capable of generating positive ions and acting as a cathode by cleaning the surface with the generated hydrogen gas to constantly clean the surface.

Still another object of the present invention is to form a cathode and an anode made of the same material such as aluminum and iron in a cylinder to form an upward flow of hydrogen and oxygen bubbles in the cylindrical gap. It is intended to provide an electrolytic ion aggregating apparatus capable of using a stirring force that promotes flocculation of particles.

Still another object of the present invention is to provide a cathode made of aluminum, iron or the like formed into a cylindrical shape,
It is intended to provide an electrolytic ion aggregating device capable of facilitating convection by providing a plurality of openings on the circumferential surface of an anode.

[0013]

That is, the electrolytic ion aggregating apparatus of the present invention comprises a cathode and an anode made of the same conductive material in a liquid tank in which colloid, particles having a suspension diameter, and oil are dispersed. However, when electricity is applied, positively charged ions and insoluble hydroxide are generated from the anode to neutralize the charge of the dispersion component, and the structure can be carried out simultaneously with aggregation and crosslinking. It is characterized by being separable.

[0014]

Next, the electrolytic ion aggregating apparatus of the present invention will be described in detail in the following examples.

FIG. 1 is a perspective sectional view showing the structure of an electrolytic ion aggregating apparatus in which aluminum is used as a cathode and an anode material in a liquid tank, each of which is molded and installed in a cylinder.

In FIG. 1, the liquid tank 1 is constructed by cutting a PVC pipe, which is an insulator, into slices, and by welding a PVC plate to the insulating plate 2 at the bottom. The cathode 3 and the anode 4 were formed into a cylinder and used as respective electrodes. And, in the lower part of the cathode cylinder 3,
An insulating ring 6 having a replenishing liquid opening 5 is provided to insulate the aluminum bottom plate electrode 7 having a full inner diameter placed on the insulating plate 2 forming the bottom of the liquid tank 1. On the other hand, the anode cylinder 4 is provided with a thick flange 8 that comes into full contact with the aluminum bottom plate electrode 7 and fits into the inner diameter of the insulating ring 6, and is fixed to the aluminum bottom plate electrode 7 with a bolt or the like not shown. is there. A large number of circulation openings 9 are provided on the entire circumference of the anode cylinder 4 so that the liquid in the anode cylinder 4 can be supplied to the cathode cylinder 3
Easy to circulate inward. On the outer peripheral portion of the liquid tank 1, there are provided a raw liquid inlet 10 from another device (not shown), a purified liquid outlet 11, and a scum outlet 13 of a scum 12 that has flocculated and floated. The gantry 14 is for height determination in order to define electrical insulation from the installation surface.

Next, the principle of agglomeration in this apparatus will be described with reference to the schematic diagram of FIG.
When 5 is connected, the anode cylinder 4 attached in contact with it becomes a positive electrode 15 via the flange 8. The outer cathode cylinder 3 has a negative electrode 1 from the outside of the liquid surface 16.
7 is connected. When electricity is applied and electrolysis is performed in a liquid in which colloidal components, suspension components, etc. (not shown) are dispersed,
From the anode cylinder 4, the aluminum bottom electrode 7, and the flange 8, they are bonded to a trivalent simple ion (Al 3+) 18a in a strongly acidic state and a hydroxyl group (OH −) in water at a pH of about 4 to 5 and are positively charged. Soluble polymer ion [Al 8 (OH) 4 + / 20] 18
b is generated, and usually has a function of neutralizing the charge of the negatively charged colloid and the suspension component. As a result, the particles are
It becomes possible to combine by the power of Der Vars. Furthermore, aluminum, iron, and the like form insoluble hydroxides, have a cross-linking action that further enhances binding by van der Waals at the same time as charge neutralization, and is an effective material. Furthermore, by energizing, the minute bubbles of hydrogen gas on the cathode side and oxygen gas on the anode side generated from the surfaces of the opposite electrodes directly facing each other become an upward flow from the bottom side, not only making the flocs levitate but also causing mutual collision of agglomerated particles. Repeatedly creates a complex effect that greatly advances the agglomeration.

The principle of electrolytic aggregation in FIG. 2 will be described in detail.
Positively charged multiply charged ions of aluminum (Al
3+) 18a or polymer ion [Al 8 (OH) 4 + / 2
[0] 18b occurs, the dispersed particles (not shown) are charge-neutralized, and at the same time, as the hydrogen gas 19 and the oxygen gas 20 generated from the polar surface rise, the particles whose surface potential is near the isoelectric point are flocculated. At the same time, the scum 12 is crosslinked by insoluble aluminum hydroxide that is generated simultaneously, strengthens the bond, and floats while stacking the agglomerates. As a result, a new stock solution from the outside is introduced from the replenisher opening 5, and the same steps are performed. In the illustrated embodiment, the cathode cylinder 3 is 120 mm
The diameter and the anode cylinder 4 are 100 mm in diameter, and in order to prevent the retention of the liquid in the anode cylinder 4, the anode cylinder 4 is provided with innumerable circulation openings 9 having a diameter of 3 mm by punching. It should be noted that, since the size of the electrolyzer becomes large and the amount of gas generated increases, there is a danger of explosion. Therefore, it is necessary to dilute with a large amount of air so that the concentration is below the dangerous point, and to completely discharge it to the outside by a duct. In the actual electrolysis, the current value changes depending on the degree of electrolysis of the sample. In the test, a constant voltage of 30 V DC was used, and the current value was decided depending on the sample. The range was set so as not to exceed 10 A / dm ² . In the waste liquid containing the general cleaning agent and colloidal components used in the water-based cleaning machine, since the electrolysis is high, the upper limit of current can be passed, and the liquid level rises from the inner wall of the cathode cylinder 3. It was confirmed that, after a few seconds, the hydrogen bubbles were generated, and after a few seconds, the scum agglomerated in millimeters suddenly suddenly floated in the oxygen bubbles on the outer peripheral surface of the anode cylinder 4 and floated on the water surface. During that time, on the cathode side, countless flocs stirred in hydrogen bubbles could be confirmed.

FIG. 3 is characterized in that a cathode flat plate 21, an anode flat plate 22 and a gap serving as a liquid passage are provided in the lower portion, and both electrodes are arranged at the same height as the housing 23 so that the scum overflows in the upper portion. It is composed.

Table 1 shows the results obtained by actually electrolytically aggregating ions according to the embodiment shown in FIG. 1, and then filtering two 1 mm-thick polypropylene filter cloths by superposition, and then analyzing the oil content by the normal hexane method. Is. The sample contained a considerable amount of surfactant, and the oil did not emulsify and did not settle or float even after a lapse of time. Originally, it was difficult to separate and remove by mechanical operation alone. It was confirmed that the objective could be achieved with extremely high accuracy by the electrolytic ion agglutination method utilizing the generation of ions and water-insoluble hydroxide.

[0021]

[Table 1]

[0022]

As described above, according to the present invention, the anode and the cathode are made of the same material that is electrically conductive and produces positively charged ions during electrolysis, and by electrolysis, the anode is positively charged. It produces ions, neutralizes the charge of negatively charged colloids, suspended components, etc., and aggregates dispersed particles by the force of Van der Waals.

Further, according to the present invention, by using aluminum, iron, copper, zinc or the like for the anode and cathode materials, positively charged hydroxide polymer polyvalent ions are generated from the anode to generate negatively charged particles. It has a practical advantage that charge neutralization can be most effectively operated.

Furthermore, according to the present invention, the fan-deer is constituted by forming the cathode and the anode from the same material which has both the cation on the anode side during the electrolysis and the charge neutralization by the insoluble hydroxide and the crosslinking action.・ Has the practical benefit of reinforcing the coupling of Vars and promoting flocking.

Furthermore, according to the present invention, the strong flotation and convection force of hydrogen and oxygen fine bubbles from the surface where the cathode and the anode directly face each other can stir the microflocs and promote the agglomeration. Have a real benefit.

Furthermore, it is made of a material such as aluminum or iron that produces ions having charge neutralization, and the cathode is also made of the same material as the anode, such as aluminum or iron. By switching to, the amount of wear due to elution of the anode is averaged, and the time until replacement can be extended, which is a real benefit.

Further, aluminum is used for the anode and cathode,
By using the same material such as iron and switching the electrodes at appropriate intervals, the side that became the anode generates cations, and the side that became the cathode cleans the surface with the generated hydrogen gas, It has the practical benefit of keeping the surface clean at all times.

Furthermore, according to the present invention, an opening is provided in the lower part of the cathode to facilitate the introduction of the replenishing stock solution by the floating upstream, and the convection of the entire liquid tank is possible.

By providing a large number of inner liquid circulation openings in the anode cylinder, there is a practical advantage that the inner cylinder side liquid can also be smoothly aggregated.

[Brief description of drawings]

FIG. 1 is a perspective sectional view including a partial section for explaining an electrolytic ion aggregating apparatus of the present invention.

FIG. 2 is a schematic cross-sectional view illustrating aggregation and agglomeration of the present invention.

FIG. 3 is a perspective view including a partial cross section showing an embodiment using a flat plate for each of a cathode and an anode.

[Explanation of symbols]

 1 Liquid Tank 2 Insulating Plate 3 Cathode Cylinder 4 Anode Cylinder 5 Replenishing Liquid Opening 6 Insulating Ring 7 Aluminum Bottom Plate Electrode 8 Flange 9 Circulating Opening 10 Raw Liquid Inlet 11 Purifying Liquid Discharging Outlet 12 Scum 13 Stand 15 Positive Electrode 16 Liquid Level 17 Negative electrode 18a, 18b Positively charged ions 19 Hydrogen gas 20 Oxygen gas 21 Cathode plate 22 Anode plate 23 Housing

Claims (6)

[Claims] 1. A colloidal component having a negative charge and a suspension component which are composed of the same conductive material to form an anode and a cathode, generate positively charged ions from the anode during electrolysis, and are dispersed in an electrolyte solution. Electrolytic ion aggregating device characterized in that the particles are electrically neutralized and the dispersed particles are agglomerated by the force of Van der Waals to facilitate filtration and adsorption. 2. An anode and a cathode are made of a material such as aluminum and iron that produces ions having a charge neutralizing power, and the anode and the cathode are switched at appropriate time intervals to average the amount of wear due to the elution of the anode and the cathode. The electrolytic ion aggregating apparatus according to claim 1, characterized in that the time until the replacement is extended is measured. 3. The electrolytic ion aggregating apparatus according to claim 1, wherein the target particles are crosslinked with an insoluble hydroxide such as aluminum or iron generated during electrolysis at the anode to make the agglomeration firm and to increase flocs. 4. The same material such as aluminum and iron is used for the anode and the cathode, and by switching the electrodes at appropriate times, the side that becomes the anode generates cations and the side that becomes the cathode becomes 2. The electrolytic ion aggregating apparatus according to claim 1, wherein the surface can be always cleaned by cleaning the surface with generated hydrogen gas. 5. An agitating force that promotes flocculation of particles by forming a rising flow of hydrogen and oxygen bubbles in a cylindrical gap by forming a cathode and an anode of the same material such as aluminum and iron into a cylinder. The electrolytic ion aggregating apparatus according to claim 1, characterized in that 6. The electrolytic ion aggregating apparatus according to claim 1, wherein a plurality of openings are provided on the circumferential surfaces of the cathode and the anode made of aluminum, iron or the like formed in a cylindrical shape to facilitate convection.