KR100435002B1 - Treating Equipment of Waste Water and the Operation Method of therof - Google Patents

Abstract

It is an object of the present invention to provide a water treatment apparatus and a method of operating the same, which are capable of effectively disinfecting treated water, decomposing organic matter and rising of SS components in one process.

The water treatment device, the tank is provided with an inlet and outlet; A plurality of electrolytic plates arranged in parallel with the fluid flow in the tank; A floc-flow induction pipe installed between the inlet port and the electrolytic plate and inducing water to be plug-flowed between the electrolytic plate; A power supply unit supplying power to the electrolytic plate; Bubble separation means installed around the electrolytic plate and separating air bubbles generated in the electrolytic plate; It consists of a scraper for removing the float floating on the upper interior space of the tank.

According to the present invention, disinfection, COD removal, N, P removal, chromaticity removal, SS removal is made at the same time, it is possible to reuse the treated water.

Description

Water treatment apparatus using electrolytic flotation method and its operation method {Treating Equipment of Waste Water and the Operation Method of therof}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolysis device having a complex function, and more particularly, to an electrolysis and flotation device for treating sewage, sewage, industrial wastewater, and drinking water.

As water usage increases and air and water pollution intensify day by day, the necessity of treating wastewater and reusing water is increasing. In such water treatment and reuse of water, disinfection to remove bacteria and viruses, and removal of suspended solids in water are becoming important factors, and related laws are expected to be strengthened in Korea.

Conventional water disinfection techniques have been developed and applied in addition to disinfection using electrolysis, chlorine disinfection, halogen disinfection, UV disinfection, ozone disinfection and the like.

Disinfection using electrolysis is a method in which various chemicals added or produced during the electrolysis of water are used as a mechanism for killing microorganisms or viruses. NaCl, Ag, Ca, Br, I, etc. are added to disinfect through electrolysis or to improve disinfection efficiency. Electrolysis for the purpose of disinfection requires additives and various auxiliary devices for supplying the additives, and the type and amount of additives vary depending on the water properties and flow rate changes to be disinfected. Known.

On the other hand, chlorine disinfection method is most widely used as a method of disinfection of water, it is known to be efficient because of high residual. However, the chlorine disinfection method produces strong toxic by-products such as THM and chloramine in the process, and has a disadvantage that the disinfecting effect is not great when the oil, grease or colloidal material having low density is contained in the water.

UV disinfection has recently been intensively studied as a sterilization method following ultraviolet rays. However, UV disinfection has little residual effect, excessive facility and maintenance costs, and relatively difficult to cope with fluctuations in the flow rate of treated water. In addition, if there is suspended solids (SS) or pigment components in the treated water, the treatment effect is very low, and because microorganisms can self-recover DNA damaged by UV, it is difficult to identify that the disinfection effect can be achieved in the field.

Ozone disinfection is a method that can achieve a great disinfection effect with strong oxidizing power, but ozone dissolution is low, facility cost and operation cost are high, and a post-treatment facility is needed to prevent the outflow of ozone from water treatment. In addition, ozone disinfection has not been clearly validated for the safety of treated by-products.

Conventionally, decomposition, flocculation, and flotation are known as methods for removing suspended solids in treated water. Decomposition is divided into chemical decomposition, biodegradation and electrolysis, and the flocculation method is divided into chemical flocculation method and electroaggregation method according to the basic principle, and the flotation method is classified into compressor flotation method and electric flotation method according to bubble source.

Chemical decomposition and chemical agglomeration methods consume chemicals and may cause secondary contamination, and biodegradation, that is, biological treatment methods, are relatively time consuming and have a limited environment. Compressor flotation method has a problem that it is difficult to float the floating material of a relatively small size (20 ㎛ or less in diameter) and the treated water fluctuates excessively.

The electrolysis-floating method is a method of decomposing organic matter by energizing (electrolyzing) an electrode in a treated water and simultaneously floating the SS in the treated water by a gas generated in the electrolysis process. This method is also widely used for the purpose of reprocessing dyes and organic matters that are difficult to biologically treat, such as dyeing wastewater, leather wastewater, and leachate, since they can decompose organic substances, particularly pigments such as pigments. However, excessive operating costs (power ratios) are required, impurities are attached to the electrode (electrode) or scales are formed, and because of the large bubbles generated, only large particles of SS are floating, influent flow rate, and pollutant concentration. It is pointed out that the problem is that it is difficult to flexibly cope with change. To solve this problem, agitating devices are attached to float impurities attached to the electrodes, large particles of SS may be filtered in advance, other chemical coagulants may be applied together, or a virtual sub-pressure tank or dissolved air flotation (DAF) may be used. Methods have been developed that apply simultaneously or use other water treatment devices such as ozone generators, UV disinfection devices, and the like.

In spite of various supplementary methods, the conventional electrolysis-injury method is required to replace the positive electrode plate frequently due to the dissolution of the positive electrode plate when the positive electrode plate is not used as the loss electrode, and even when using the loss electrode made of Al or Fe. Due to the large amount of sludge generated, it is excessively expensive to treat the sludge generated. ③ Since the process of using coagulant is mostly used, economic burden is generated due to the use of coagulant. In some cases, DAF or other post-treatment units need to be attached at the end of the process, resulting in inefficient site utilization and operating costs.

It is an object of the present invention to provide a water treatment apparatus and a method of operating the same, which are capable of effectively disinfecting treated water, decomposing organic matter and rising of SS components in one process.

Another object of the present invention is to provide a water treatment apparatus for an electrolysis-decomposition-injury combined use and a method of operating the same in which finer bubbles are generated.

1 is a vertical sectional view of the water treatment apparatus according to the present invention.

2 is a partial cutaway view of a floc-flow guide tube according to the present invention.

3 is a perspective view of an electrolytic plate according to the present invention.

4 is a graph showing an example of wastewater treatment using a water treatment apparatus according to the present invention.

<Description of Drawing>

10: water treatment device 20: tank

30: electrolytic plate 40: floc-flow induction pipe

50: power supply 60: bubble separation means

70: scraper 21: inflow tank

22: reaction vessel 23: precipitation tank

24: remove the sludge 25, 26: weir

27: bubble guide wall 28: partition wall

31: support means 32: L-shaped plate

33: electrolytic plate support rail 34: electrolytic plate holder

35: protrusion 41: guide hole

71: scraper blade 72: chain

73: roll 210: inlet

211, 220, 231, 240, 261: sludge outlet 230: outlet

340: fixing groove

Water treatment apparatus using an electrolytic flotation method for achieving the above object,

A tank provided with an inlet and an outlet; A plurality of electrolytic plates arranged in parallel with the fluid flow in the tank; A floc-flow induction pipe installed between the inlet port and the electrolytic plate to induce the inflow water to be plug-flowed between the electrolytic plate; A power supply unit supplying power to the electrolytic plate; Bubble separation means installed around the electrolytic plate and separating air bubbles generated in the electrolytic plate; It consists of a scraper for removing the float floating on the upper interior space of the tank.

The tank is a cylinder divided into an inflow tank into which wastewater flows in, a reaction tank in which electrolysis occurs, and a settling tank in which residual sludge is settled.

The inflow tank is a section for precipitating sludge first, the reaction tank is a section for electrolyzing influent water which has been subjected to primary purification, and the settling tank is a section for precipitating fine sludge contained in the electrolyzed influent water.

The electrolytic plate is supplied with electricity to electrolyze organic matter in the influent, and bubbles are generated on the surface to cause the SS to float.

The electrolytic plate is composed of a positive electrode plate and a negative electrode plate, the positive electrode plate is coated with a material such as Pb, Rh, Sn, Ru, Nb, Ir, Ge, Ga, etc. on the Ti plate in order to minimize the loss and use for a long time It is preferable to use an insoluble electrolytic plate (plated or deposited), and it is preferable that the negative electrode plate uses an electrolytic plate made of Al and Cu which generate a lot of bubbles.

As the negative electrode plate has higher electrical conductivity, small bubbles are formed, and aluminum is mainly used. However, if there is a lot of Ca and Mg ions in the waste water and scale formation is a concern, a metal plate such as Ti may be used.

In particular, in the case of the electrolysis device manufactured for the purpose of removing the scale, a reticulated aluminum plate is used as the cathode, and when the current falls below a certain level by the scale formation, the device automatically changes the electrolytic plate continuously. The scale can be removed.

In addition, a plurality of irregularities are formed on one side (upper layer) of the electrolytic plate, so that the movement of the generated bubbles becomes turbulent.

In the electrolytic plate, microbial disinfection, color removal, COD removal (emulsification of oil, grease, decomposition of hardly decomposable substances, removal of organic matter) and ammonia N are removed by the electrolysis effect. Floating (chloroide component) floats by bubbles.

For reference, the ammonia N is removed as follows.

- _{^{cathode: Cl - → Cl 2 + 2e}} -

_{Solution: Cl 2 + H 2 O →} HOCl + H + + Cl -

HOCl + NH ₄ ⁺ → NH ₂ Cl + H ₂ O + H ⁺

HOCl + NH ₂ Cl → NHCl ₂ + H ₂ O

NHCl ₂ + HOCl → NCl ₃ + H ₂ O

_{NHCl 2 + H 2 O → NOH} + 2H + + 2Cl -

^{_{NOH + 2HOCl → NO 3 - +}} 3H + + 2Cl -

_{NOH + NHCl 2 → N 2 ↑} + HOCl + H + + Cl -

The floc-flow induction pipe is intended to flow the inflow water in a constant laminar flow, for example, a pipe body in which a plurality of induction holes are formed. The influent is supplied between the electrolytic plates in a laminar flow state through a floc-flow guide tube. Therefore, the electrolysis effect and the SS flotation effect work evenly on the influent.

The floc-flow induction pipe into which the waste water of the inflow tank is introduced is installed at the lower part of the electrolytic plate, so that the flow of fluid inside the reactor is rotated by the floating of air bubbles and the flow of inflow water. It is best to maximize direct and indirect oxidation.

The power supply unit supplies power to the electrolytic plate and the bubble separation means described below, and is installed outside the water treatment apparatus and connected to the apparatuses using electric wires.

The bubble separating means is a device for separating bubbles and fine scale formed in the electrolytic plate from the electrolytic plate.

Specifically, it periodically slides the surface of the microhammer that directly generates a shock wave, a microwave generator that separates bubbles by using resonance of a radio wave, a microvibrator that separates bubbles by using vibration, or an electrolytic plate on which bubbles are generated. To force separation may be used.

Since the SS is effectively floated by the microbubbles, it is important to properly adjust the operation cycle of the bubble separation means so that the bubbles formed on the electrode plate can be separated when the size is appropriate.

The scraper is a device for removing the injured sludge. For example, the scraper is equipped with a scraper blade for pushing the sludge floating on the water surface of the influent in one direction, and the floated sludge collected by the blade is separated and discharged through a separately provided outlet.

The operation method of the scraper depends on the current density flowing through the electrolytic plate.

① In the condition where the current density is low, that is, the bubble generation is relatively low, a large number of scraper blades are installed in the scraper and operated at a relatively high RPM to quickly remove the flotation sludge. In this case, as the material of the scraper blade, it is preferable that a non-woven fabric having a positive charge, anion exchange resin, tulle fabric, a fabric including glass, or the like is used.

(2) In the case where the current density is high, that is, bubbles are relatively generated and the scraper operation is not smooth, the distance between the scraper blades and the water surface is increased, and a floating sludge layer having a certain height (1-5 cm) is formed on the water surface. To be created. For smooth formation of the flotation sludge layer, it is preferable to keep the number of scraper blades at 1-2 and the rotational speed of the scraper at 1-5 RPM.

On the other hand, in the operation method of the water treatment apparatus using the above-mentioned electrolytic flotation method,

The inflow water is controlled to floc-flow between the vertically installed electrolytic plates, and the bubble separating means repeatedly exerts an impact on the electrolytic plate, or the wiper is slid in contact with the electrolytic plate, thereby allowing fine bubbles to form on the surface of the electrolytic plate. Allow separation from

Controlling the floc-flow allows the incoming wastewater to pass through the electrolytic plates where the electrical reaction takes place evenly. In addition, the bubbles generated in each of the electrolytic plates may be supported by a magnetic force when they reach a predetermined size, but in order to reduce the diameter of the buoyant bubbles so that the separation action of the suspended solids is actively performed, the bubbles are generated in the electrolytic plate by using bubble separation means. Forced bubbles are separated.

In addition, by adjusting the operation speed of the scraper and the position of the blade to operate so that the floating sludge of a certain height is accumulated on the water surface, it suppresses excessive bubble formation, maximizes the settling and floating movement of the floating particles, the fluid inside the entire reactor It helps to stabilize the flow and maximize the occurrence of chemical reactions.

The sedimentation refers to the action of increasing the density of the sludge (metal hydroxide) and the like to the water surface of the water treatment device as the bubbles are concentrated on the surface of the water treatment device, thereby lowering the density to the bottom of the water treatment device.

In addition, the floating refers to the action of attracting the floating material vortexing in the upper layer by the attraction of the foam layer formed on the water surface of the water treatment device.

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

1 is a cross-sectional view showing a vertical section of the water treatment apparatus of the zone invention.

Water treatment apparatus 10 using the electrolytic flotation method of the present invention,

A tank 20 provided with an inlet 210 and an outlet 230; A plurality of electrolytic plates 30 arranged in parallel with the fluid flow in the tank; A floc-flow induction pipe (40) installed between the inlet port (210) and the electrolytic plate (30) to induce the inflow of water to the plug-flow between the electrolytic plate; A power supply unit 50 for supplying power to the electrolytic plate 30; A bubble separating means (60) installed around the electrolytic plate and separating the bubbles generated in the electrolytic plate; It consists of a scraper 70 for removing the float floating on the upper interior space of the tank.

The tank 20 is composed of an inflow tank 21 into which waste water is introduced, a reaction tank 22 in which electrolysis occurs, and a precipitation tank 23 for precipitation of residual sludge.

The inflow tank 21 is formed with an inlet 210 through which waste water is introduced, and a weir 25 is provided in the vicinity of the inlet to prevent backflow of water. In addition, a sludge discharge port 211 for discharging sludge (metal hydroxide) precipitated in the introduced wastewater to the outside is formed.

The reaction tank 22 is provided with a sludge discharge port 24 provided with a sludge discharge port 240 to discharge and collect the injured sludge (oil, grease, and colloidal material) on one side of the upper side, The lower side of the reaction tank 22 is formed with a discharge port 220 for discharging the sludge. In addition, the bottom surface of the floating sludge removal box 24 is formed at a predetermined inclination so as to easily discharge the collected sludge.

The settling tank 23 is provided with a bubble guide wall 27 to prevent bubbles generated in the reaction tank from turbulent flow, and prevent the injured sludge from being swept out of the outlet, and to increase the flow distance of the incoming wastewater. Partition walls 28 are provided.

In addition, the sedimentation tank 23 has an outlet 230 for discharging the purified influent to the outside, and a sludge discharge port 231 for discharging the fine sludge formed therein. In the portion where the outlet 230 is installed, the weir 26 having only an upper portion is formed long and vertically, and a sludge discharge port 261 for discharging the sludge deposited at the lower portion of the surface on which the weir 26 is installed is formed. It is.

In addition, the electrolytic plate 30 is fixed by the support means 31 on the horizontal member of the L-shaped plate 32 attached to the side wall separating the inflow tank 21 and the reaction tank 22 of the main body.

As shown in FIG. 3, the support means 31 includes an electrolytic plate support rail 33 fixed to the horizontal member, and an electrolytic plate holder 34 detachably assembled to the electrolytic plate support rail 33. It consists of. The upper surface of the electrolytic plate holder 34 has a fixing groove 340 into which the electrolytic plate 30 can be inserted.

The electrolytic plate 30 fixed by the support means 31 is a positive electrode and a negative electrode plate which are fixed in cross, and projections 35 are formed on the upper part of each plate to form a vortex of inflow water. The electrolytic plate 30 may be provided in plural numbers according to the type of inflow water. In general, the positive electrode plate and the negative electrode plate may be disposed so that the interval between each electrolytic plate is 2-5 cm according to the width of the reactor 22 according to the current density. To place.

In addition, the floc-flow induction pipe 40 is a pipe connecting the inflow tank 21 and the reaction tank 22 which are blocked in the tank horizontally, as shown in FIG. A large number of guide holes 41 are formed. The induction hole 41 may be formed as a single through hole, but it is preferable to form a plurality of through holes having a small diameter to make the inflow of the inflow tank 21 into a plug-flow.

In addition, the bubble separation means 60 is a device for separating the bubbles generated in the electrolytic plate by transmitting vibration to the positive electrode and the negative electrode plate 30, the electrolytic plate 30 as shown in FIG. Microvibrators can be used to insert and transmit vibrations.

In addition, the scraper 70 is composed of a roll 73 driven by the power of a motor, a chain 72 fastened to the roll, and a plurality of scraper blades 71 coupled to the chain 72. It is composed.

The scraper 70 is installed on the reaction tank 22 of the tank, so that a plurality of scraper blades 71 to push in one direction to lift the floating matter floated in the reaction tank 22 to remove the floating sludge (24). Do it.

In addition, by maintaining the rotational direction of the scraper in the clockwise direction, to have a direction opposite to the movement direction of the fluid on the surface of the water, to minimize the phenomenon that the injured sludge is washed out in the influent.

Hereinafter, the operation state of the water treatment apparatus will be described in detail.

1 is a vertical sectional view of a water treatment apparatus according to the present invention.

As shown, the inflow water (waste water) introduced into the water treatment device through the inlet 210 is introduced into the inlet tank 21 to move from the top to the bottom with the inlet. In the inflow tank 21, sludge having a large mass is first deposited to the lower portion, and the precipitated sludge is discharged to the outside through the sludge discharge port 211 formed at the lower portion of the inflow tank.

The inlet water in which the primary precipitation is made is introduced into the reaction tank 22 through the induction hole 41 of the floc-flow induction pipe 40, and the inflow water introduced into the reaction tank is installed near the floc-flow induction pipe 40. It passes through the electrolytic plate 30.

In this case, electrolysis occurs in the electrolytic plate 30 to which power is supplied, and the amount of decomposition may vary depending on the conductivity of the inflow water and the strength of the power supplied.

Bubbles are generated in the positive and negative plates by the electrolysis, and the generated bubbles are separated from each of the electrolytic plates by the bubble separating means 60, and rise, and suspended matters (low-density oil, grease) contained in the inlet during the ascending process. And colloidal substances) are adsorbed and separated.

In addition, Cl ⁻ dissolved in the inflow water is converted into OCl ⁻ in an amount sufficient for disinfection (remaining chlorine amount of 0.1 mg / L or more) by electric action of the electrolytic plate 30, and nitrogen is generated by decomposition. It floats and the metal reactant is simultaneously precipitated.

In addition, the bubbles separated from the electrolytic plate 30 are formed by the flow of the projection 35 formed on the upper part of the electrolytic plate and the inflow of the inflow water injected from the floc-flow induction pipe 40, thereby allowing the fluid to flow inside the reactor 22. since subjecting circulation vortex wake up several times a plate delivered in units of time (based on the HRT), electrochemical directly and redox a significant increase, the direct by-product produced in the oxidation process of contaminants (eg, OCl ^-, NO ₂ ^-, Fe ^2+, may also maximize the efficiency of the indirect oxidation and reduction by Fe ^3+, etc).

Floating sludge and sediment sludge generated by the electrolysis are removed by the scraper 70 and the outlet 220, respectively. In more detail, the scrubbing sludge is removed by pushing the scrubbing blades (float) stacked on the surface of the scrubber blades 71 close to or touching the surface of the reactor to remove the scrubbing sludge 24.

The sludge discharge port 240 for discharging the bubbles to the outside is formed in the lower portion of the flotation sludge removal box 24, and the final purified inflow water is supplied to the sludge removal box 24 so as to discharge the collected bubbles smoothly. It is also possible to install an injection device.

The inflow water passing through the reaction tank 22 flows into the settling tank 23 in which the partition wall 28 is installed. The inflow water passes through the partition wall 28 in a laminar flow to precipitate fine sludge that is not removed.

The inflow water passing through the partition wall 28 is gradually discharged to the outlet 230, the process of re-precipitating the remaining sludge due to the weir 26 is installed in the vertical direction in close proximity to the outlet 230, The sludge precipitated in the weir 26 is discharged to the outside through the sludge discharge port 261 formed in the lower portion of the weir.

Examples 1 to 5: influent treatment effect by the apparatus of the present invention

Reactor standard and treatment conditions in each Example are as follows.

Volume of tank: 50 L (reactor volume 25 L),

Type of electrolytic plate: positive electrode plate-Ti plate on which Ir and Sn are deposited

Negative Plate-Al Plate

Number of electrolytic plates used: 4 positive plates, 5 negative plates

Size of electrolytic plate: 15 cm wide and 6 cm long

HRT: 5, 10 minutes

Voltage: 7.5, 9.0, 10 V

Current: 0.6, 0.8, 1A

Bubble separation means: Microvibrator

TSS, COD _Mn and COD _Cr of the influent flowing into the water treatment apparatus of the present invention are 138.6, 50.4 and 211.3 mg / L, respectively.

Example 1 When the power applied to the electrode plate is 10V, 1A HRT 10 minutes

TSS of the treated water was treated with 5.3 mg / L and 96.2%, and COD _Mn and COD _Cr were treated with 14.2 mg / L and 49.5 mg / L, respectively, 71.8% and 76.6%.

Also, the electrolysis of the water treatment apparatus produced 0.322 mg / L of OCl ⁻ .

Example 2 When the power applied to the electrode plate is 10V, 1A HRT 5 minutes

TSS of the treated water was 7.3 mg / L and 94.7% was treated, and COD _Mn and COD _Cr were 14.4 mg / L and 71.3 mg / L, respectively, 71.4% and 66.3%.

In addition, the electrolysis of the water treatment apparatus produced 0.218 mg / L of OCl ⁻ .

Example 3 When the power applied to the electrode plate is 7.5V, 0.6A and the HRT is 10 minutes

TSS of treated water was 19.9 mg / L and 89.9% was treated, and COD _Mn and COD _Cr were also treated with 16.7 mg / L and 58.5 mg / L, respectively, 66.9% and 72.3%.

In addition, the electrolysis of the water treatment apparatus produced 0.119 mg / L of OCl ⁻ .

Example 4 When the power applied to the electrode plate is 9.0V, 0.8A and the HRT is 10 minutes

The TSS of the treated water was 10.8 mg / L and 92.2% was treated, and COD _Mn and COD _Cr were 16.2 mg / L and 111.5 mg / L, respectively, 67.9% and 47.2%.

In addition, the electrolysis of the water treatment apparatus produced 0.155 mg / L of OCl ⁻ .

Example 5 When the power applied to the electrode plate is 10.4V, 1A and the HRT is 10 minutes

TSS of the treated water was 8.0 mg / L and 94.2% was treated, and COD _Mn and COD _Cr were also treated with 15.1 mg / L and 74.9 mg / L, respectively 70.0% and 64.6%.

In addition, the electrolysis of the water treatment apparatus produced 0.361 mg / L of OCl ⁻ .

That is, as shown in Table 1, TSS, COD _Mn , COD _Cr can be seen that the processing efficiency is greatly generated at high voltage (10V) and current (1A).

Example 6 Microbial Sterilization Effect in Influent Water by Apparatus according to the Present Invention

Device-Use the same device as in Examples 1-5

Operating Conditions-

① Power supply 10V, 1A

② HRT was measured as 0, 2, 3, 5, 10 and 15, respectively, and the residual microbial water (CFU) and residual Cl ⁻ concentration in the effluent were measured.

As shown in FIG. 4, it can be seen that the concentration of microorganisms in the influent water introduced into the water treatment apparatus is reduced to 1000 units / mL or less, and the concentration of OCl ⁻ dissolved in the treated water also increases with time. Therefore, it can be seen that the device of the present invention has an excellent effect on the reduction and sterilization of the number of microorganisms.

In addition, although not shown, the TSS concentration, chromaticity, and COD _Mn of the influent were maintained at 2.0 mg / L or less, 20 units or less, and 5.0 mg / L or less, regardless of the temporal and component changes of the sewage treatment plant effluent.

Examples 7 to 9: chromaticity removal effect by the apparatus of the present invention

Device-Use the same device as in Examples 1-5

Operating Conditions-

HRT-5min, voltage and current were applied as shown in Table 2, and the chromaticity of the effluent was measured.

As shown in Table 2, the largest processing efficiency was generated in Example 7, it can be seen that the processing efficiency is reduced when the voltage and current is added or subtracted.

Examples 10 to 12 Advanced Treatment of Livestock Wastewater Using Apparatus of the Invention

Device-Use the same device as in Examples 1-5

Operating Conditions-

① HRT, Watt, Kwh / m 3 were applied under the conditions of Table 3, respectively, and COD _Mn , SS, TN, TP, COD _Cr , TKN, and NH ₃ of the effluent were measured, respectively.

② Raw water used in the experiment is livestock wastewater containing livestock manure discharged from livestock farms.

As shown in Table 3, it can be seen that COD _Mn , SS, COD _Cr , and TKN increase the processing efficiency as the HRT time of the present invention is increased.

In addition, it can be seen that TN and TP are changed according to the amount of power (Watt) applied, and almost removed at 33.3W.

Examples 13 to 16: Advanced Treatment of Fish Market Wastewater Using the Apparatus of the Present Invention

Device-Use the same device as in Examples 1-5

Operating Conditions-

HRT, Watt, and Kwh / m 3 were applied under the conditions of Table 4, respectively, and COD _Mn , SS, TN, TP, COD _Cr , TKN, and NH ₃ of the effluent were measured, respectively.

As shown in Table 4,

As a result of using the apparatus of the present invention, it can be seen that it is effective in the removal rate of COD _Mn , SS, TN, TP, COD _Cr , TKN, NH ₃ .

The above-described water treatment apparatus and operating method are only examples for describing the present invention, and it is natural that a person of ordinary skill in the art belongs to the scope of the present invention using a partial change with reference to the detailed description. something to do.

According to the present invention, disinfection of water such as waste water, removal of oil or suspended solids (SS component), removal of color, decomposition and conversion of hardly decomposable substances, desulfurization and denitrification, electrostatic flocculation / removal of suspended solids, heavy water production, It is a device that can be applied to the purpose of removing algae.

In addition, according to the present invention, by disinfection, COD removal, N, P removal, chromaticity removal, SS removal at the same time it is possible to reuse the treated water.

Claims (7)

In the water treatment apparatus using the electrolytic flotation method, A tank provided with an inlet and an outlet; A plurality of electrolytic plates arranged in parallel with the fluid flow in the tank; A floc-flow induction pipe disposed between the inlet port and the electrolytic plate and configured to induce inflow of water to flow through the electrolytic plate; A power supply unit supplying power to the electrolytic plate; Bubble separation means installed around the electrolytic plate and separating air bubbles generated in the electrolytic plate; Water treatment apparatus using an electrolytic injury method comprising a; scraper for removing the floating floating on the inner space of the tank; The method of claim 1, In the electrolytic plate, the positive electrode plate is characterized in that the electrolytic injury method characterized in that the plated or deposited on a titanium plate a mixed catalyst of any one or two or more materials selected from the group consisting of Ir, Rh, Ru, Pd, Sn, Ge and Ga. Used water treatment device. The method of claim 1, The negative electrode plate of the electrolytic plate, the water treatment apparatus using an electrolytic injury method, characterized in that the Al material having a reticulated structure so that scale formation can be induced quickly. The method of claim 1, The bubble separating means is a water hammer using an electrolytic flotation method, characterized in that the microhammer, microwave generator, microvibrator or wiper. The method of claim 1, By placing the position of the electrolytic plate on the left side of the bottom of the entire reactor, the flow of fluid inside the reactor is rotated due to the rise of bubbles and the flow of inflow water, and the fluid flow maximizes the direct and indirect oxidation of contaminants. A water treatment apparatus using an electrolytic flotation method. In the operating method of the water treatment apparatus according to claim 1, wherein the influent is treated by an electrolytic flotation method. The inflow water is controlled to floc-flow between the electrolytic plates installed vertically, by repeatedly applying a shock to the electrolytic plate by the bubble separating means, or by sliding the wiper in contact with the electrolytic plate, the fine bubbles are the surface of the electrolytic plate Operating method of a water treatment apparatus using an electrolytic flotation method characterized in that the separation from. The method of claim 6, By adjusting the operation speed of the scraper and the position of the blade to operate so that a certain height of floating sludge is accumulated on the water surface, it suppresses excessive bubble formation, maximizes sedimentation and floating movement of the floating particles, and improves the fluid flow inside the entire reactor. Operation method of the water treatment apparatus using the electrolytic flotation method, characterized in that to stabilize and maximize the occurrence of chemical reactions