KR101144857B1 - An electrolyzer for treatment of sewage - Google Patents

Abstract

PURPOSE: An electrolyzing bath for water treatment is provided to improve the treating efficiency of treating water per area and to prevent the occurrence of electric short-circuit phenomenon. CONSTITUTION: An electrolyzing bath for water treatment includes a main body(100), a separator(150), a fixed plate(160), an electrolyzing part(200), and a sliding rail part(155). The separator faces the fixed plate to form the flow path of treating water. The sliding rail part supports both parts of the separator. The electrolyzing part includes an anodic element, a cathodic element, fixed shafts, anode plates, cathode plates, and a plurality of insulating protrusions. The cathodic element and the anodic element are arranged at the upper side and the lower side of the fixed plate. The fixed shafts are axis-combined with the anodic element and the cathodic element. The anode plates are separately arranged by a plurality of spacers. The cathode plates are arranged between the anode plates. The protrusions are protruded to both external sides of the cathode plates.

Description

An electrolyzer for treatment of sewage

The present invention relates to an electrolysis tank for water treatment, and in particular to improve the arrangement structure of the electrode plate to compact the volume and to improve the treatment efficiency of the treated water, and to facilitate the exchange operation of the electrode plate. It is related with the electrolysis tank for water treatment whose structure was improved.

Recently, due to the large population growth and industrial development, significant sewage and industrial wastewater is discharged every day in the situation of absolutely lacking water resources, which causes water pollution to become a serious social problem.

In particular, domestic wastewater, livestock wastewater, and industrial wastewater are the main causes of polluting water quality in public waters and small and medium rivers.

While the contaminants of living sewage, livestock waste, and industrial wastewater are mainly organic matters decomposable by specific microorganisms, in recent years, wastewater is accompanied by an increase in the amount of water due to rapid industrial development, population growth, and urban population concentration. The proportion of inorganic and organic components in the glass is gradually increasing.

Conventional activated sludge methods using floating growth of microorganisms are commonly used in the existing sewage, livestock waste, and industrial wastewater treatment methods.

However, the conventional biological treatment method has a problem in that not only the reaction rate is slow, but also the treatment efficiency is low and a separate advanced treatment facility is provided.

Therefore, in recent years, a physicochemical treatment method having a higher treatment efficiency and speed than a biological treatment method has been studied, and a treatment method using electrolysis is emerging among them.

Briefly describing the electric treatment method, first, the treated water to be treated in the electrolysis tank is added to the adjusting tank, which is a pretreatment process, and then caustic soda, inorganic coagulant, and suitable additives (Nacl, Na2so4) are added. The mixture is subjected to a pretreatment step of mixing and adjusting the conductivity.

Thereafter, the conductive water is passed through an electrolysis tank to induce an electrical reaction, and thus impurities contained in the treated water due to electrocoagulation, electroflation, and electrooxidation. At the same time, the filtered filtrate is discharged, and the suspended solids generated during the treatment are transferred to the suspended solids storage tank and subjected to a post-treatment step in which the precipitated aggregate is discharged through the discharge pipe.

It has a process of electrolyzing the treated water after the pretreatment process in the electrolysis tank, an example of the existing electrolysis tank is the Korean Utility Model Registration No. 20-177458 "Electrolysis tank for sewage treatment apparatus using electrolysis" As shown in FIG. 1, as shown in FIG. 1, a float collecting part 55 having an upper portion open to supply treated water undergoing a pretreatment process and having a float discharge pipe 54 formed by a diaphragm 52 is provided with a float discharge pipe 54. The discharge part 50 is provided with a stepped filter water discharge pipe 56 is installed to the upper side, and the aggregate formed integrally with the discharge part 50, the aggregates precipitated to the lower side is formed so that the lower end is narrowed so as to discharge the aggregates Reactor 60 in which discharge pipe 62 is installed, electrolytic part 70 installed so as to be connected to a rectifier installed outside by stacking a plurality of cylindrical electrode tubes 72 inside the reactor 60, and Decomposition Inserted into the center of the 70 and having an electrolysis tank 100 consisting of a treatment water supply pipe 80 formed with a plurality of discharge holes 82 at the bottom, discharge hole 82 in the treatment water supply pipe (80) Conical uniform distribution portion 10 formed at a predetermined height (h) on the upper side and the electromagnet portion 20 to aggregate and precipitate the fine colloidal particles contained in the treated water in the lower portion of the treated water supply pipe 82 ) Is installed.

In the conventional electrolysis tank having such a configuration, the treated water is uniformly distributed to each electrode tube 72 of the electrolytic unit 70 due to the uniform distribution unit 10, and the colloidal particles contained in the treated water are electromagnet units 20. In addition to being attached to and removed, the impurity contained in the treated water passing through each electrode tube 72 of the electrolysis unit 70 is removed while being decomposed by an electrical reaction.

However, the existing electrolysis tank has a disadvantage that the entire electrolysis unit 70 must be replaced even if each electrode tube 72 is worn or damaged as each electrode tube 72 of the electrolysis unit 70 has an integrated structure. In addition to this, in order to prevent problems such as electric short, it is necessary to maintain a constant interval between each electrode tube, so that the volume is inevitably increased, which causes a problem that the treatment efficiency per unit area is lowered.

In addition, there is a fear that untreated water that is not electrolyzed is discharged into treated water passing through the conventional electrolysis tank.

The present invention was devised to solve the above problems in consideration of the above-mentioned problems, and an object thereof is as follows.

First, to provide an electrolysis tank for water treatment having an improved structure to facilitate disassembly and assembly for exchange and repair of electrodes.

Second, since the spacing between the electrodes is densely formed and the insulating function is densely arranged, the spacing between the electrodes is densely configured to prevent problems such as an electric short, and the number of electrodes per unit area can be arranged. It is an object of the present invention to provide an electrolysis tank for water treatment in which the structure is improved to improve the treatment efficiency per unit area while making the compact.

Third, the present invention provides an electrolysis tank for water treatment having an improved structure such that untreated water that has not been electrolyzed is not discharged into the treated water that has passed through the electrolysis tank.

The present invention for achieving the above object is the decomposition tank body is formed with an upper portion is formed and the receiving space is formed to receive the treated water flow in one side and the discharge port formed on the other side,

A separation plate and a fixing plate provided at the center of the decomposition tank main body and disposed to face each other in the form of a partition wall so as to form a flow path of the treated water;

A plurality of positive electrode plates and negative electrode plates disposed between the separator plate and the fixed plate and electrically connected to each other are alternately disposed, and an electrolytic part having an insulating material disposed on an outer side of the negative electrode plate.

Sliding rails supporting both sides of the separating plate are formed on both inner walls of the disassembling tank body so that the separating plate is slid up and down along the sliding rail to be detachable from the disassembling tank body.

The electrolytic part is disposed on the upper and lower parts of the fixed plate and the wires are connected to each other and electrically connected, the first and second fixed shafts of the conductive material axially coupled to the positive electrode and the negative electrode; Bipolar plates fitted to the first fixed shaft and spaced apart from each other by a plurality of spacers, and bipolar plates fitted to the second fixed shaft and disposed between the bipolar plates and spaced apart from each other by a plurality of spacers. Cathode plates are disposed, and a plurality of insulating protrusions protruding on both outer sides of the cathode plates.

Further comprising a diaphragm having a fixed jaw at a portion of the treated water passing through the electrolytic part to the outlet side, the height of the fixed jaw is formed equal to or lower than the height of the upper end of the negative electrode plate.

The present invention has the following effects.

First, due to the characteristics of the structure of the separation plate and the sliding structure of the sliding plate and the assembly structure of the positive electrode plate and the negative electrode plate, the partial exchange of the positive electrode plate and the negative electrode plate is possible, and the replacement operation is easy, so the maintenance and maintenance has a very useful effect.

Second, not only can the anode and cathode plates be disposed close to each other by using an insulating protrusion, but also prevent the electric short phenomenon, and the processing efficiency of the treated water per unit area is improved due to the arrangement of electrode plates that are arranged in close proximity to each other. Since it can be compactized, it has the advantage of reducing the constraint of the installation space.

Third, since the treated water must pass through the electrolysis area of the electrolytic part due to the structural characteristics of the fixing jaw formed in the diaphragm, it is possible to fundamentally block the outflow of the treated water that is not electrolyzed.

1 is a cross-sectional view showing an example of a conventional electrolysis tank.
Figure 2 is a perspective view showing an electrolysis tank for water treatment according to the present invention.
3 is a side cross-sectional view of FIG.
4 is a plan view of FIG.
Figure 5 is an enlarged perspective view of the present invention the electrolytic unit.
6 is a front view of FIG. 5;
Figure 7 is a use state showing the separation process of the present invention separator.

The present invention enables partial exchange of the electrode plates and facilitates the exchange of the electrode plates, and the plurality of negative electrode plates and the positive electrode plates are alternately arranged to be in close contact with each other using an insulated projection to compact the volume, and The present invention relates to an electrolysis tank for water treatment, by which the contact area is increased to improve the treatment efficiency of treated water per unit area.

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

Here, the treated water is added to the adjusting tank, which is a pretreatment process, before adding to the electrolysis tank, and then mixed with caustic soda, inorganic coagulant, and appropriate additives (Nacl, Na2so4) to adjust the conductivity, and the conductivity adjusting step is completed. As the treated water is passed through an electrolysis tank to induce an electrical reaction, the impurities contained in the treated water are removed by electrocoagulation, electroflation, and electrooxidation, and the filtrate is filtered. At the same time, the suspended solids generated during the treatment are transferred to the suspended solids storage tank and subjected to the post-treatment stage in which the precipitated aggregate is discharged through the discharge pipe.

The electrolysis tank for water treatment according to the present invention will be described with reference to FIGS. 2 to 7, the configuration of which is arranged in the digestion tank body 100 and the digestion tank body 100 having an open structure so that the upper portion is opened. Two positive (+) plates 230 and negative (-) plates 240 are alternately arranged in close contact with each other, and the fixed plate disposed on both left and right sides of the electrolytic part 200 ( 160 and separation plate 150.

In more detail, the decomposition tank main body 100 has a receiving space 105, which is a space in which the treated water that has undergone the pretreatment step and is temporarily stored on one side is formed, and is processed while passing through the electrolysis unit 200 on the other side. A discharge port 120 is formed to allow the treated water to flow out to a later process step, and a discharge space 107 is temporarily stored before being discharged to the discharge port 120.

In addition, the decomposition tank body 100 is formed with first and second compartment plates 110 and 130 for partitioning the accommodation space 105 up and down, and the first compartment plate 110 is formed of the accommodation space 105. It is formed to extend vertically from the bottom surface, the second partition plate 130 is formed on the upper portion of the receiving space 105 to function to delay the flow of the flow path of the treated water.

In addition, the decomposition tank main body 100 has a diaphragm having a fixed jaw 142 between the electrolysis unit 200 and the discharge space 107 so as to separate the electrolysis unit 200 and the discharge space 107 ( 140 is formed.

The fixing jaw 142 of the diaphragm 140 is preferably formed at a height equal to or lower than the height of the upper end of the negative electrode plate 240. This is to allow the treated water to flow out to the outlet 120 only when passing through the crossover portion (electrolysis region) between the positive electrode plate and the negative electrode plate 240 while passing through the electrolysis unit 200.

The electrolysis unit 200 is disposed on the upper and lower parts of the fixing plate 160 and connected to wires, respectively, and the positive and negative electrode pieces 202 and 204 to which + and − currents are supplied, and the upper and lower surfaces of the fixing plate 160. And a conductor disposed axially coupled to the positive electrode body 210 and the negative electrode body 220 and electrically connected to the positive electrode piece 202 and the negative electrode piece 204, respectively. First and second fixed shafts 270 and 270a of the raw material, the positive plates 230 vertically fitted to the first fixed shaft 270 and spaced apart from each other by a plurality of spacers 260, and a second On both sides of the cathode plates 240 and the cathode plates 240 that are vertically fitted to the fixed shaft 270a and disposed between the anode plates 230 and spaced apart from each other by the plurality of spacers 260. It is composed of a plurality of insulating protrusions 250 are arranged to protrude.

In addition, fixing nuts 275 are fastened to end portions of the first and second fixed shafts 270 and 270a to prevent separation of the positive electrode plate 230 and the negative electrode plate 240.

The positive electrode plate 230 may employ a carbon material, and the negative electrode plate 240 may adopt a stainless material in consideration of corrosion.

Sliding rails 155 supporting both sides of the separating plate 150 are formed on both inner walls of the digester main body 100, so that the separating plate 150 is disposed along the sliding rails 155. The slide is moved downward so as to be detachable from the disassembly tank body 100.

This may have a sufficient working space during the exchange operation of the positive electrode plate 230 and the negative electrode plate 240 of the electrolytic part 200, and after the separation of the fixing nut 275, the positive and negative plates from the first and second fixed shafts 270 and 270a. 230 or after removing the negative electrode plate 240 may be replaced.

The operation of the present invention having such a configuration will now be described.

In the electrolysis tank for water treatment according to the present invention, when the treated water that has passed through the pretreatment step is introduced into the accommodation space 105 through the upper portion, the electrolysis unit along the flow path defined through the first and second compartment plates 110 and 130. It is introduced to the (200) side.

Subsequently, the treated water introduced into the electrolysis unit 200 is electrolyzed in the electrolysis region of the positive electrode plate 230 and the negative electrode plate 240 of the electrolytic unit 200, and then, the fixing jaw 142 of the plate 140. Ride over) flows into the discharge space 107 and is temporarily stored and then discharged to the discharge port 120 side.

In this case, the + and-currents are supplied to the positive electrode plate 230 and the negative electrode plate 240 of the electrolysis unit 200, respectively, when + and − currents are respectively supplied to the positive and negative electrode pieces 202 and 204 connected to each other. Current is supplied to the positive electrode plate 230 and the negative electrode plate 240 through the positive electrode body 210, the negative electrode body 220, and the first and second fixed shafts 270 and 270a.

Thereafter, as the current is supplied to the positive electrode plate 230 and the negative electrode plate 240, the treated water introduced into the electrolysis unit 200 is electrolyzed, and then temporarily stored in the discharge space 107, and then through the outlet 120. It is spilled into the aftertreatment process.

On the other hand, the positive electrode 230 and the negative electrode 240 is prevented from the electrical short because the mutual contact is blocked by the insulating protrusions 250, which is an insulating material (絶緣 材), and because they are arranged in close contact with each other increases the number of arrangement per unit area It has the advantage that the volume can be made compact.

In addition, the contact area of the treated water with respect to the positive electrode plate 230 and the negative electrode plate 240 can be increased due to the structural characteristics of the positively disposed positive electrode plate 230 and the negative electrode plate 240, compared to the existing electrolysis tank having the same volume. The advantage is that the electrolytic treatment efficiency is improved.

In addition, when an exchange operation is required due to wear and contamination of the positive electrode plate 230 and the negative electrode plate 240 of the present invention, the separating plate 150 may be slid upward and separated from the sliding rail part 155. As a result, the work space required for the replacement work can be secured.

In this exchange, since the positive electrode plate 230 and the negative electrode plate 240, which are electrode plates, are assembled in a fitting manner to the first and second fixed shafts 270 and 270a, they are fastened to the ends of the first and second fixed shafts 270 and 270a. When the positive plate 230 and the negative plate 240 are horizontally moved in the axial direction after releasing the fastened state of the fixed nut 275, partial replacement is possible because it can be easily detached from the first and second fixed shafts 270 and 270a. Done.

The present invention can be easily fitted horizontally coupled to the first and second fixed shafts (270, 270a) even when assembling for replacement of the new negative electrode plate 240 or the positive electrode plate 230, there is an advantage that the replacement operation is easy.

Therefore, the present invention is easy to replace and replace the positive electrode plate 230 and the negative electrode plate 240 is easy to maintain and maintain, the treatment efficiency of the treated water per unit area can be improved, and the volume can be compact, so that the installation space It has the advantage of reducing the constraints.

Description of the Related Art [0002]
100: decomposition tank body 105: receiving space
107: discharge space 110,130: first and second compartment
120: outlet 140: diaphragm
142: fixing jaw 150: separation plate
155: sliding rail portion 160: fixed plate
200: electrolytic part 202: anode
204: cathode piece 210: anode
220: cathode body 230: anode plate
240: negative electrode plate 250: insulation projection
260: spacer 270, 270a: first and second fixed shaft
275: Fixing nut

Claims (2)

The decomposition tank main body 100 having an upper portion formed to be open and a receiving space portion 105 formed to receive and receive the treated water on one side and the outlet 120 formed on the other side thereof;
A separation plate 150 and a fixing plate 160 provided at the center of the decomposition tank main body 100 so as to face each other in the form of a partition wall so as to form a flow path of the treated water;
The electrolytic part disposed between the separator plate 150 and the fixed plate 160 and having a plurality of electrically connected positive electrode plates 230 and negative electrode plates 240 alternately disposed with an insulating material disposed outside the negative electrode plate 240. 200,
Sliding is formed on both inner walls of the decomposition tank body 100 to support both sides of the separation plate 150 to be separated from the decomposition tank body 100 by moving the separation plate 150 up and down. It has a rail unit 155,
The electrolysis unit 200 is disposed on the upper and lower portions of the fixing plate 160, respectively, the positive electrode 210 and the negative electrode 220 are wired and electrically connected;
First and second fixed shafts 270 and 270a of a conductive material axially coupled to the anode body 210 and the cathode body 220;
Positive electrode plates 230 fitted to the first fixed shaft 270 and spaced apart from each other by a plurality of spacers 260;
Cathode plates 240 fitted to the second fixed shaft 270a and disposed between the positive electrode plates 230 and spaced apart from each other by a plurality of spacers 260,
Electrolysis tank for water treatment, characterized in that it comprises a plurality of insulating protrusions 250 protruding on both outer sides of the negative plate (240). The method according to claim 1,
Further comprising a diaphragm 140 having a fixed jaw 142 at a portion of the treated water passing through the electrolysis unit 200 to the discharge port 120 side,
The height of the fixing jaw 142 is the same or lower than the height of the upper end of the negative electrode plate 240, the electrolysis tank for water treatment.

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