KR200223758Y1 - Water treatment system using the electrical principle - Google Patents

Abstract

The present invention is a water treatment apparatus using the electrical principle, in order to maximize the contact area with the electrode plate of the raw water to be processed to install the shape of the electrode plate in the labyrinth shape, even when replacing the electrode plate in the upper electrode plate It is designed to be easily lifted, so that the electrode plate can be easily replaced and the treatment efficiency can be improved.

The configuration of the water treatment apparatus using the electrical principle according to the present invention is the electrode in the process of moving the raw water to the rear end of the water treatment apparatus between the maze-shaped electrode plate 15 made of stainless steel staggered in the water treatment apparatus at uniform intervals Agglomeration sedimentation phenomenon occurs by combining with cations and anions in water by the interaction between the (+) and (-) poles of the plate 15, and the sludge generated during the coagulation sedimentation process is collected in the sludge sedimentation part 2. It is removed through the sludge discharge pipe (11). The electrode plate 15 is installed separately from the positive and negative electrodes rather than the alternating supply of the positive and negative poles through the current supply terminal 16 in order to cause a smooth electrical reaction. Always supplying a constant current afterwards is desirable to improve processing efficiency.

Description

Water treatment system using the electrical principle

Until now, the water treatment device using electric principle has not applied much due to the problems caused by insufficient treatment efficiency verification and the increase of construction cost. Especially, the maximum treatment surface area is achieved by using a large number of electrode plates with the minimum unit area. There is a problem to solve the problem of maximizing the processing efficiency.

In recent years, the improvement of living standards has led to a sharp increase in water use, which has led to water shortages. Therefore, in order to solve the shortage of water, it has been attempted to be used for heavy water treatment such as toilets by treating wastewater, and the conventional biological treatment method is difficult to use for heavy water due to low reaction rate and low treatment efficiency. There was a problem to be equipped with a separate advanced processing facility.

Therefore, in recent years, the treatment efficiency and treatment speed is superior to the biological treatment method, and the situation has been mainly focused on the physical and chemical treatment methods that can be used as insufficient for domestic water and industrial water, and among them, the water treatment method using electrical principles is highlighted. There is a situation.

If the water treatment method using the conventional electrical principle is outlined, first, the treated water to be treated in order to have a greater efficiency is put into a control tank, which is a pretreatment process, caustic soda, inorganic coagulant and appropriate additives (NaCl, Na2so4), etc. Add and mix to go through the steps of adjusting the conductivity.

The treated raw water introduced into the reactor generates an electric reaction as it passes between the electrode plates, and this electric reaction is mainly caused by the following reaction, which is coagulation, floatation, and oxidation.

Double oxidation and coagulation are the most important reactions in the theory of water treatment. The oxidation process involves the oxidation of iron in the form of metal in the positive electrode of the electrode plate to +2 or + trivalent ions. Oxygen (O2) is generated as the generated hydroxide ions (OH-) are oxidized. Oxygen (O2) generated in this way is involved in indirect oxidation of organic materials, and at the same time, reduction occurs at the cathode of the electrode plate to generate hydroxide ions (OH-) under neutral conditions and hydrogen (H2) gas under acidic conditions. .

On the other hand, the metal ions eluted at the (+) electrode form a metal hydrate complex with a (+) charge under acidic or neutral conditions, depending on the pH conditions in the water, and a metal hydrate complex with a (-) charge under strongly alkaline conditions. Will form. Therefore, in general, the pH of the influent wastewater is operated under neutral or weakly acidic conditions. Therefore, the double layer compression is performed by electrically neutralizing the surface charges of the metal hydrate complex with (+) charge and the colloid (Colloid) with (-) charge. Organic matter coagulates and precipitates through coagulation by double layer compression.

The flocculation sediment produced during the treatment is settled to the sludge settling portion having a certain degree of gradient located in the lower part of the treatment tank, and the sediment collected sludge is periodically discharged to the pump through the sludge discharge pipe.

On the other hand, a flocculated substance is formed by agglomerated matter by gas bubbles generated during oxidation and reduction of the electrode plate, and a floating scum is generated, and the floating scum is treated with the treated water in the treatment tank. It flows into the floating separation tank located next, and the floating scum floating at the top is moved to the scum outlet through the overflowware, and the scum discharge pipe is moved to the floating separation tank, and the treated water is treated through the treatment water discharge pipe located at the upper part.

As the raw water is treated by the electrical reaction, each electrode plate must be replaced after a certain period of use, and the replacement process of removing and inserting the overlapping electrode plates from the treatment tank is very inconvenient and accordingly Many additional costs have arisen.

In addition, in the water treatment apparatus using the conventional electrical principle, the treatment efficiency is formed to have a wide width as well as the length of each overlapping electrode plate in proportion to the width and length of each electrode plate formed to overlap in a cylindrical shape. By lengthening, it was possible to improve the treatment efficiency, but the overall size of the water treatment apparatus is increased (scale up), causing a lot of problems in the installation, as well as the problem that the installation cost is increased.

Therefore, the present invention was devised to solve the above-described problems, and replaced the conventional cylindrical electrode plate with an electrode plate in the form of a labyrinth, expanding the surface area of the electrode plate to the maximum, thereby contacting the water with the electrode plate. It is an object of the present invention to provide a water treatment apparatus using an electrical principle for the purpose of improving the water treatment efficiency by adopting a flow path structure that can maximize the flow rate.

1 is a perspective view showing an electrical water treatment apparatus according to the present invention

Figure 2 is a perspective view showing an electrical water treatment device according to the present invention

3 is a state of the pole plate showing the assembled state of the positive electrode plate and the negative electrode plate according to the present invention

** Description of symbols for the main parts of the drawing **

1: Treatment water inflow direction 2: Sludge precipitate

3: first electrode plate 4: second electrode plate

5: third electrode plate 6: fourth electrode plate

7: fifth electrode plate 8: sixth electrode plate

9: WALLWEAR ware 10: Treatment water outflow pipe

11: sludge discharge pipe 12: sludge settling hole

13: (+) pole current supply line 14: (-) pole current supply line

15: electrode plate 16: current supply terminal

Like the water treatment apparatus using the conventional electrical principle to achieve the above object, this apparatus also temporarily stores the inflow target raw water in the adjustment tank installed in the previous stage of the water treatment apparatus as a measure to remove particulate matter of the raw water to be treated. After precipitation, caustic soda, inorganic coagulant, and pH adjusting solvent are supplied from the storage tank with acid resistance to the inside of the raw water treatment tank through the chemical injection pump.

In the adjusting tank, a small amount of agitator is installed to induce the mixing of the supplied chemical and the influent waste water, and the raw water to be mixed with the chemical is introduced into the water treatment device, which is the main treatment device of the present invention, through the inlet pump.

The raw water to be introduced into the water treatment apparatus by the treatment water distribution apparatus is disposed between the electrode plate 15 of the labyrinth type stainless material alternately installed in the water treatment apparatus at uniform intervals as shown in FIG. 1. In the process of moving to the rear stage, the coagulation and precipitation phenomenon occurs by combining with cations and anions in water by the interaction between the (+) and (-) electrodes of the electrode plate 15 mentioned above. It is collected in the sludge settling portion 2 is removed through the sludge discharge pipe (11).

In order to produce a smooth electrical reaction, the electrode plate 15 is installed separately from the (+) and (-) electrodes rather than the alternating supply of the (+) and (-) through the current supply terminal 16 periodically. Always supplying a constant current afterwards is desirable to improve processing efficiency.

Accordingly, the device of the present invention also provided a current by installing a positive electrode current supply line 13 and a negative current supply line 14 on each electrode plate 15, respectively.

The electrode plate 15 is installed after inserting the grooves uniformly by the thickness of the electrode plate 15 on the inner wall of the water treatment device, and the fixing of the electrode plate 15 is automatically made with the insertion of the treatment tank.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention in more detail as follows.

1 is a cutaway perspective view showing an electrical water treatment device according to the present invention, Figure 2 is a three-dimensional perspective view showing an electrical water treatment device according to the present invention, Figure 3 shows an electrode plate state diagram showing the assembled state of the positive electrode plate and the negative electrode plate according to the present invention Doing.

The treatment apparatus of the present invention has a treatment water inlet pipe for introducing the treatment water undergoing the adjustment process on one side of the front end portion, and the treatment water discharge pipe to allow the treated water passing through the electrode plate to be discharged to the outside on one side thereof. 10) is formed, the lower is provided with a sludge discharge pipe 11 for treating the sediment generated by the electrical principle.

On the outer surface of the water treatment apparatus, a current supply terminal 16 is installed to supply current to the electrode plate 15 to supply positive and negative electrodes to the electrode plate 15.

In addition, it is preferable to install the lower form of the water treatment device to be inclined toward the outlet so that sludge can be smoothly collected in the sludge settling portion 2 formed in the lower portion of the treatment device, the sludge according to the lower inclination angle of the water treatment device The collection efficiency of is different.

In more detail, as shown in FIG. 1, the treated water that has undergone the pretreatment step in the adjustment tank is introduced into the water treatment apparatus through a raw water inlet pipe formed at the front end of the water treatment apparatus, and the target water introduced into the water treatment apparatus is Passing the electrode plate 15 installed step by step in the treatment tank is subjected to the coagulation sedimentation process by the above-mentioned electrical reaction.

As shown in FIG. 2, the treated water passes through the electrode plate 15 provided with a plurality in the treatment tank, that is, passes between the electrode plate 15 constituted in the labyrinth and the (+) electrode and (- This causes coagulation and sedimentation action by the electrode to remove impurities contained in the treated water.

As described above, the treated water that has passed through all the electrode plates 15 is discharged to the outside through the treated water outlet pipe 10 installed at the rear end of the water treatment apparatus, and the impurities contained in the treated water are flocculated and precipitated by electric reaction. After being integrated in the sludge settling portion 2 formed in the lower part of the after-treatment tank is discharged to the outside through the sludge discharge pipe (11).

As described above, the water treatment apparatus using the electrical principle according to the present invention can be expected to maximize the water treatment efficiency in the same treatment tank area by making the electrode plate in the maze form to maximize the contact area with the raw water to be treated.

In addition, the present invention improves the treatment efficiency than the existing physical and chemical treatments and biological treatments, and the reaction time is faster due to the short residence time, and the corrosion of the electrode plate does not appear so that the prototype of the electrode plate will be maintained for at least five years. Therefore, the replacement cost of the electrode plate is consumed less, and therefore, the maintenance cost of the treatment facility is expected to be less.

In addition, the water treatment apparatus using the electrical principle according to the present invention doubles the oxidation / reduction effect by the administration of the inorganic coagulant and the three-dimensional electrode effect, so that contaminants of the target water are decomposed within a short time, and the flow of precipitated particulate matter is reduced. It is possible to provide an advanced treatment apparatus capable of reducing the settling load in the flotation tank at the rear end by discharging the sediment in the treatment tank uniformly distributing the bed.

Claims (1)

In the water treatment apparatus using a square-type electrical principle; A plurality of lattice-shaped labyrinth-shaped electrode plates 15 for treating raw water to be treated are provided in the treatment tank; A current supply terminal 16 for supplying electricity to these electrode plates 15 is provided so as to separate the (+) and (-) electrodes and supply them to the electrode plate; The water treatment apparatus using the electrical principle, characterized in that the lower portion of the water treatment device is provided with a sludge discharge pipe 11 for discharging the flocculated sediment.