KR20040092663A - Apparatus for electro-coagulative treatment with conductive media - Google Patents

Abstract

PURPOSE: Provided is an electro-coagulating apparatus by using conductive media which is able to continuously allow wastewater to flow in and electrically coagulate the wastewater to treat it. CONSTITUTION: The apparatus comprises a housing (10) having a watching window (11) and an electrode plate (51), a storage case (40) where cohesive agents eluting metals (70) such as expendable aluminum or iron are stored, conductive media (60) filled up with the inner space of the lower part of the housing, an electrode rod (50) equipped at the center of the storage case and fixed on an upper cover (20), the upper cover (20) having an outlet (21) connected to an inlet of cohesive agents eluting metals (22), a lid (23) and an upper part strainer (24) and connected by a bolt and nut (25) to the housing, and a lower part cover (30) having an inlet (31) connected to the lower part strainer (32) and connected by a bolt and nut (33) to the housing.

Description

Apparatus for electro-coagulative treatment with conductive media

The present invention maximizes the current efficiency and the conductive media (60) by moving the conductive media (60) to the upper by the flow rate of the wastewater flowing through the inlet 31 of the lower cover 30 of the housing 10 consisting of an insulating cylindrical body The surface friction of the electrode plate 51 can prevent the formation of scale on the electrode in the housing 10, and also generate an oxidizing substance by electrolysis to oxidize contaminants in the water, and the coagulant eluting metal (70) The present invention relates to an electroaggregation treatment apparatus using a conductive medium, which causes a chemical reaction by coagulation by metal ions eluted from the coagulation of floc and colloidal particles, thereby facilitating removal of contaminants.

In general, various industrial wastewater and sewage treatment methods include physical treatment using sedimentation and filtration, chemical treatment using chemical reactions by adding chemicals, and biological treatment using organic microorganisms to decompose organic matters. The method prevails.

Such a conventional wastewater treatment apparatus has a large installation scale, a complicated installation structure, and a high installation cost, and a large installation area is required due to the size of the installation scale. There is a problem in that the processing technology is required, and thus, the processing apparatus cannot be normally operated due to immature operation and lack of expertise.

In view of these points, an electroaggregation treatment method using electrolysis, which makes it easier to operate the wastewater treatment apparatus, has been used.

Such an electrocoagulation treatment method is to treat the waste water due to the electrical reaction between the positive and negative ions generated in the electrode plate by depositing the electrode plates of the plurality of cathodes and anodes in the storage tank for storing the waste water. Effective in removing contaminants, organic contaminants and colloidal contaminants, and has the advantage of treating high concentrations of contaminated wastewater compared to the size of the device.

However, this method of electroaggregation requires the replacement of the electrode after a certain amount of time is exhausted, and there are many difficulties such as interruption of operation and waste disposal of the replacement electrode. In order to extend the service life, a method of periodically reversing is used, but there is a problem in that processing efficiency decreases due to adhesion of scale or scum to the electrode plate over the operation time.

In addition, most electro-agglomerate treatment devices are injected with electrolyte because the electrolysis is low when the salt content in the influent wastewater is low and the electrolysis does not occur smoothly. In the form, there was a disadvantage that the electrode portion is exposed can cause a safety accident during operation.

Therefore, the present invention has been made in order to solve the above problems, the conductive media by the flow rate of the waste water flowing through the inlet 31 provided in the lower cover 30 of the housing 10 composed of an insulating cylindrical body ( 60) is moved upwards, so that electricity flows well in waste water or water with low salt content, and improves current efficiency, and through the surface friction by the conductive media 60, Adhesion can be prevented, and oxidative substances are generated by electrolysis to oxidize contaminants in the wastewater, and chemical reactions are caused by electrocoagulation by metal ions eluted from the coagulant-eluting metal (70). It is easy to remove the contaminants by agglutinating, and when the coagulant eluting metal 70 is consumed, it can be easily replenished. It is an object of the present invention to provide an electrocoagulation treatment apparatus using a conductive media that can be disposed in a sealed interior to prevent the danger caused by the electrode during operation and to continuously treat the wastewater in a pressurized manner.

1 is a cross-sectional view of the electroaggregation apparatus according to the present invention

2 is an operating state diagram of an embodiment of the present invention

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

10 housing 11: monitoring window

20: top cover 21: outlet

22: inlet 23: lid

24: Upper strainer 25, 33: Bolt, nut

30: lower cover 31: inlet

32: lower strainer 40: reservoir

50: electrode 51: electrode plate

52: cathode terminal 53: anode terminal

60: conductive media 70: flocculant eluting metal

In order to achieve the above object, in the present invention, the monitoring window 11 and the electrode plate 51 are positioned on the inner wall of the housing 10 and the outer wall of the housing 10 composed of an insulating cylindrical body. A storage container 40 in which the 70 is stored is provided, and the conductive medium 60 is filled in the inner space below the housing 10, and the electrode 50 applied as the anode in the middle of the storage container 40 has an upper cover 20. The upper cover 20, which is fixed to the coagulant discharging metal 70, the inlet 22 and the outlet 23 connected to the lid 23 and the upper strainer 24, the housing 10 and the bolt nut ( 25 is fixed to the lower cover 30 having the inlet 31 connected to the lower strainer 32 is connected to the housing 10 through the bolt nut 33 to continuously introduce the waste water to the electrical coagulation treatment It is achieved by characterized in that it can be configured.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of an electroaggregation apparatus using electrolysis according to the present invention, and FIG. 2 is a cross-sectional view showing an operating state of an embodiment of the present invention.

The device of the present invention is a device capable of continuously coagulating wastewater by using electrolysis, and is a positive terminal 53 and a negative terminal connected to the (+), (-) power applied from a power supply (not shown) A reactor housing 10 in which an electrically conductive electrode plate 51 and an electrode rod 50 connected to the 52 are embedded and filled with a coagulant-eluting metal 70 in contact with the electrode rod 50. When the wastewater flows into the inside thereof, the wastewater is electroaggregated by the cation metal generated from the coagulant eluting metal 70 and the anion generated by the electrode plate 51 to discharge the outlet 21 provided on the upper cover 20. It is a device that continuously coagulates wastewater by discharging it.

That is, the housing 10 provided in the electrocoagulation processing apparatus has a cylindrical shape so that the upper and lower ends thereof are sealed with respective covers so that the wastewater pumped from the pump (not shown) may be electrocoagulated. The lower strainer 32 is provided in communication with the inlet 31 so as to allow the wastewater to flow into the housing 10. In addition, the upper surface 20 of the corresponding surface having the inlet 31 is provided in the housing 10. An outlet 21 is formed in communication with the upper strainer 24 so as to discharge the waste water reacted at. In the device made in this way, the monitoring plate 11 and the inner circumferential wall surface of the housing 10 are attached to the electrode plate 51 on the inner surface thereof, and the cathode terminal 52 attached to the electrode plate 51 is The housing 10 is fixed to the fixing nut so as to protrude to the outside.

On the other hand, the electrode rod 50 applied to the anode is fixed to the center of the upper cover 20 by a fixing nut, the positive electrode terminal 53 connected to the power supply (not shown) is formed to protrude to the outside of the upper cover, the electrode rod At a predetermined distance from the outer periphery and the outer periphery is provided with a reservoir 40 for storing the coagulant-eluting metal 70 made of an insulator mesh or a tub, and the coagulant-eluting metal 70 in the reservoir 40 is provided. Is filled, and the conductive media 60 is filled in the lower portion of the housing 10.

At this time, the electrode plate 51 and the electrode bar 50 described above is preferably used as a titanium material coated with a noble metal material such as stainless material or platinum, iridium, the coagulant eluting metal 70 is stored in the storage container 40 is Any one of iron and aluminum may be used, and the housing 10, the upper cover 20, and the lower cover 30 are preferably formed of an insulating material that does not conduct electricity.

The conductive media 60 filled in the housing 10 is media formed of carbon material or media formed of conductive polymer material, and media of 1 mm or more and 10 mm or less are used.

When the wastewater is to be treated using the electrocoagulation treatment apparatus according to the present invention, the inlet provided in the lower cover 30 by using a pump not shown first as shown in FIG. 31 is introduced into the housing 10 through the lower strainer 32 connected to the.

Wastewater introduced into the housing 10 flows through the conductive media 60, and is pushed upward to fill the space between the electrode plate 51 and the reservoir 40, and part of the wastewater flows into the reservoir 40 to dissolve the coagulant-eluting metal. It is filled between 70.

Wastewater that has passed through the conductive media 60 is discharged to the outlet 21 connected through the upper strainer 24 while contacting the flocculant eluting metal 70 in the reservoir (40).

At this time, when the negative electrode and the positive electrode are applied to the electrode plate 51 and the electrode 50, the power is applied, and the coagulant-eluting metal 70 in contact with the electrode 50 applied as the positive electrode and positioned in the storage container 40 is made of metal. As the metal cations are dissolved, metal hydroxides are generated to cause coagulation reactions with suspended solids in the wastewater, and as time passes, the coagulant-eluting metal 70 decreases in size, and water contacting the anode decomposes to form oxygen and hydrogen ions. The chlorine ions in the waste water are dissolved in water with chlorine gas to become HOCl to oxidize organic matter, and water is decomposed in the electrode plate 51 applied to the cathode to generate hydrogen gas and OH- ions.

The metal hydroxide and metal cation generated at the anode and the organic and anion components in the waste water are combined and attached to the cathode electrode plate 51, but the conductive media 60 flows on the surface of the cathode electrode plate 51 to cause friction. As a result, foreign matters attached to the electrode plate 51 fall, thereby preventing current efficiency reduction due to scale or foreign matter adhesion.

The introduced wastewater is agglomerated by metal cations, metal hydroxides and oxygen generated through the dissolution of the coagulant-eluting metal 70, which is the positive electrode, via the conductive medium 60 charged to the negative electrode and the coagulant-eluting metal 70 charged to the positive electrode. A reaction, an oxidation reaction, etc. occur, and at the same time, the coagulated sludge and by-products generated as a result of the reaction are discharged to the outlet 21 together with the waste water.

On the other hand, when the coagulant dissolution metal 70 is dissolved and consumed over time, it is checked through the monitoring window 11 provided in the housing 10, open the lid 23 provided in the upper cover 20, the inlet Through 22, the flocculant eluting metal 70 is replenished.

The present invention described above is not limited to the accompanying drawings, and various substitutions, modifications, and changes are possible without departing from the technical spirit of the present invention. It will be obvious to you.

Such a present invention,

First: It is designed to operate by filling only the coagulant eluting metal 70 without replacing the electrode, solved the long-time operation interruption due to electrode replacement, easy operation and maintenance, easy to manufacture, equipment cost and operation and maintenance Reduced costs

Second: the friction of the electrode plate 51 by the flow of the conductive media 60 during operation to prevent the scale is attached to increase the processing efficiency.

Third: The conventional device is low in efficiency because the current does not flow well when treating wastewater with a low salt content, but by using the conductive media (60) to increase the current flow in the wastewater with a low salt content to increase the treatment efficiency.

Fourth: In the conventional device, the electrode is exposed to the outside and there is a risk of electric shock during operation, but the device is hermetically sealed and the electrode plate 51 or the electrode 50 is not exposed to the outside, thereby increasing safety during operation.

Claims (3)

The monitoring window 11 and the electrode plate 51 are provided on the inner wall of the housing 10, and the storage container 40 in which the coagulant-eluting metal 70 such as consumable aluminum or iron is stored therein is provided. The conductive medium 60 is filled in the inner space below the housing 10, and the electrode rod 50 provided at the center of the storage container 40 is fixed to the upper cover 20, and the coagulant eluting metal is disposed on the upper cover 20. An inlet port 22 and an outlet port 21 connected to the lid 23 and the upper strainer 24 are provided, and the lower cover 30 is provided with an inlet port 31 connected to the lower strainer 32, and a bolt nut (33) is connected to the housing (10), the electro-aggregation processing apparatus, characterized in that configured to be able to electrically inject the waste water continuously in the coagulation process. The method of claim 1, The conductive media 60 filled in the lower portion of the housing 10 is a media formed of a carbon material or a media formed of a conductive polymer material, wherein the media has a size larger than 1 mm and smaller than 10 mm. The method of claim 1, Electro-aggregation processing apparatus characterized in that the conductive medium (60) is filled and operated between the coagulant-eluting metal 70 and the negative electrode plate (51) contacted with the electrode bar (50) in the reservoir (40).