KR200292151Y1 - Apparatus for treating waste water having electrocoagulation part and sterilizing water suppling unit - Google Patents

Abstract

The present invention relates to a wastewater treatment apparatus having an electrocoagulation treatment unit and a sterilizing water supply unit. This means that a treatment tank accommodating the wastewater, a plurality of electrode plates provided in parallel and perpendicular to each other in the treatment tank, and an electric supply for applying a direct current to each of the electrode plates while the neighboring electrode plates have opposite electrodes from each other. A first electrocoagulation processing unit having a control unit; The water passing through the first electrocoagulation processing unit is further removed through the electrocoagulation reaction to remove residual contaminants in the water, and a plurality of treatment tanks accommodating the supplied water and parallel and vertically provided in the treatment tanks. A second electrocoagulation processing unit having an electrode plate and an electric supply and a control unit for applying direct current to each of the electrode plates such that neighboring electrode plates have opposite electrodes; And a sterilizing water supply unit for supplying sterilizing water into the second electrocoagulation processing unit to sterilize the water during the electrocoagulation process.

The present invention made as described above, the electro-aggregation treatment for the waste water is repeatedly performed through two treatment tanks connected in series, the electro-aggregation treatment effect is high, in particular by injecting the sterilizing water upwards in the second electro-coagulation treatment unit to agglomerate Induction of rapid support of contaminants in a state of course, there is an effect that can be performed at the same time sterilization of various microorganisms.

Description

Apparatus for treating waste water having electrocoagulation part and sterilizing water suppling unit

The present invention relates to a wastewater treatment apparatus having an electrocoagulation treatment unit and a sterilizing water supply unit.

As urban concentration of the population and the development of various industries, living sewage and factory wastewater discharged from homes and factories are increasing. Since the increase in the amount of sewage and wastewater will one day exceed the limits of natural purification, various purification facilities for artificially purifying sewage water have been developed.

The purification facilities have been developed in a variety of ways, and almost all of the wastewater is taken up to precipitate the heavy contaminants, and the organic matter is decomposed and removed by adding microorganisms to the light organic materials which have been precipitated but not precipitated. And, physically filtering the microbial treated water through a filter and additionally performing chemical chlorine treatment according to the requirements.

On the other hand, since the purification facilities should be purged by inputting various chemicals or microorganisms, there is a risk of pollution caused by the abuse of chemicals and the hassle of operating the facilities. Is being proposed.

The wastewater treatment method using the above-mentioned electrical energy is a treatment method for electrochemically removing contaminants contained in the wastewater by applying electrical energy to the wastewater. There are methods such as electrolysis, electrocoagulation, and electroflotation, and these treatments use electricity, so the waste water treatment is easily controlled by an external controller. Simple and fast processing efficiency or processing speed.

The wastewater treatment method by electrocoagulation is a method of agglomeration of fine pollutants suspended in the wastewater to increase its size and to precipitate or lift it.

As is well known, the colloidal substances (pollutants) contained in the wastewater mostly carry negative (-) charges, so they do not aggregate by the action of mutual repulsive force and remain suspended in water. Since these colloidal materials have a negative charge, they can be neutralized by adding positive ions. Neutralized colloidal materials can aggregate with each other, thus increasing their size.

In the wastewater treatment apparatus for electrocoagulation treatment as described above, a plurality of electrodes are installed in parallel to each other in parallel to each other in a treatment tank containing wastewater, and positive and negative charges are applied to each electrode to oxidize between two neighboring electrodes. It is configured to electrically neutralize negatively charged contaminants by inducing a reduction reaction.

In other words, the contaminants in the colloidal floating water are combined with the metal cations eluted from the electrode to electrically neutralize and aggregate. This electrocoagulation reaction is based on the principle of metal hydroxide formation by hydrolysis of the metal eluted from the anode. In addition, the reduction of heavy metal ions in the waste water to the metal through a reduction action is known as a method that can easily remove the heavy metal.

However, the wastewater treatment apparatus for treating wastewater by the principle of electroaggregation removes contaminants but does not sterilize microorganisms in water. Of course, if a separate sterilizer is added to the wastewater treatment system, it is possible to sterilize microorganisms, but this is an additional device. The addition of a device is expensive and once the device is totally complex, so those skilled in the art do not usually mount it.

On the other hand, in order to more actively support the condensed matter condensed between the electrodes to the top to install a separate flotation means for ejecting water or air upwards, which is only for the support of contaminants As it is used, the contribution to wastewater treatment is not high compared to the cost of the device, which results in lowering the economics of the device.

The present invention has been made to solve the above problems, the electro-aggregation treatment for wastewater is repeatedly performed through two treatment tanks connected in series, so that the effect of electro-aggregation treatment is high. It is an object of the present invention to provide a wastewater treatment apparatus having an electrocoagulation treatment unit and a sterilization water supply unit capable of simultaneously sterilizing various microorganisms as well as inducing rapid flotation of contaminants in the aggregated state by spraying upward.

1 is a view showing the overall configuration of a wastewater treatment apparatus having an electrocoagulation treatment unit and a sterilizing water supply unit according to an embodiment of the present invention.

Figure 2 is a flow chart showing the wastewater treatment method using the wastewater treatment apparatus having an electrocoagulation processing unit and a sterilizing water supply unit according to an embodiment of the present invention for reference.

<Explanation of symbols for the main parts of the drawings>

10: original waste water tank 12, 36: pump

14: first electrocoagulation processing unit 16: sludge discharge conveyor

18, 32: treatment tank 20: electrode plate

22: electricity supply and control unit 24: bentonite hopper

26: bentonite 28: stirring blade

30: second electric coagulation processing unit 34: salt tank

38: UV sterilization part 40: Blower

42: Air sterilization lamp 43: Air passing tube

44: sterilization water discharge pipe 46: scraper

48: sludge discharge groove 50: water pipe

52: salt water pipe 54: raw wastewater pipe

56: bentonite pipe 58: connection pipe

60: discharge pipe 62: drive shaft

64: sterilization air pipe

In order to achieve the above object, the present invention is to remove contaminants in the wastewater supplied from the outside through the wastewater pipe through an electrocoagulation reaction, and a treatment tank for receiving the supplied wastewater, and vertically in the treatment tank. A first electrocoagulation processing unit including a plurality of electrode plates provided in parallel with each other, and a power supply and a control unit configured to apply a direct current to each of the electrode plates so that neighboring electrode plates have opposite electrodes; A treatment tank for receiving the supplied water by receiving water passing through the first electrocoagulation treatment unit and additionally removing residual contaminants in the water through an electrocoagulation reaction; A second electrocoagulation processing unit including a plurality of vertically arranged and parallel electrode plates, and a power supply and a control unit configured to apply a direct current to each of the electrode plates so that neighboring electrode plates have opposite electrodes; And a sterilizing water supply unit for supplying sterilizing water into the treatment tank of the second electrocoagulation processing unit to sterilize the water during the electrocoagulation process.

In addition, the sterilizing water supply unit; It is filled with salt inside, and water is supplied from the outside through a water pipe, and on the other hand, it is connected to a treatment tank of the second electrocoagulation unit through a brine pipe, and converts tap water supplied from the outside into brine and supplies it to the treatment tank. It is characterized in that it comprises a salt tank and the ultraviolet sterilization unit connected to the brine pipe to add the sterilizing air to the brine moving from the salt tank to the second electrocoagulation treatment unit to generate sodium chlorate (NaOCl).

In addition, the bentonite supply unit for supplying the bentonite (bentonite) to the raw waste water moving to the first electrocoagulation treatment unit is characterized in that it is further provided.

In addition, the bentonite supply unit; A hopper accommodating bentonite therein, agitation means for agitating bentonite in the hopper, and the hopper and the wastewater pipe are connected so that bentonite in the hopper flows into the wastewater pipe and is supplied to the first electrocondensation treatment unit together with the wastewater. It is characterized by consisting of bentonite pipe.

In addition, the ultraviolet sterilization unit; And at least one air passing tube connected to the brine pipe to allow the outside air to move into the brine pipe, and an ultraviolet lamp installed in the air passing tube to ultraviolet sterilize the air passing through the air passing tube. Characterized in that.

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

1, the wastewater treatment apparatus having an electrocoagulation treatment unit and a sterilization water supply unit according to the present embodiment is connected to the wastewater tank 10 through the wastewater pipe 54 and is disposed in the wastewater tank 10. Wastewater that has been supplied from the first electrocoagulation processing unit 14 by being connected in series through the first electrocoagulation processing unit 14 and the first electrocoagulation processing unit 14 and the connection pipe 58 to receive the raw waste water and to perform electrocoagulation. To the second electrocoagulation treatment unit 30 and discharged to the outside after the electrocoagulation process again, and the bentonite 26 to the wastewater that is connected to the original wastewater pipe 54 and moved to the first electrocoagulation treatment unit 14. The addition includes a bentonite supply unit and a sterilization water supply unit for supplying sterilization water into the second electrocoagulation processing unit 30.

The first electrocondensation processing unit 14 is connected to the wastewater tank 10 through the wastewater pipe 54, receives the wastewater therein, and has an upper portion of the treatment tank 18, and the treatment tank ( 18, a plurality of electrode plates 20 installed vertically and parallel to each other, and an electric supply and a controller 22 for providing direct current electricity to each of the electrode plates 20 are included.

The electrode plate 20 may use an aluminum plate or an iron plate, and neighboring electrodes may have different electrodes from each other to enable a known electrocoagulation reaction.

The electricity supply and control unit 22 is electrically connected to each electrode plate 20 one by one. The electricity supply and control unit 22 may be connected to each electrode plate 20 to transfer electricity supplied from the outside to each electrode and adjust the voltage of the electricity delivered or change the polarity of the current at every desired time. .

The contaminants aggregated in the treatment tank 18 but settled to the bottom are discharged to the outside through the discharge pipe 60. In addition, the contaminants supported at the top overflow from the treatment tank 18, flow out to the outside, and are processed.

The bentonite supply unit has a bentonite hopper 24 for receiving bentonite 26 and a bentonite pipe 56 for connecting the bentonite hopper 24 and the wastewater pipe 54.

The bentonite hopper 24 is a known hopper for discharging the bentonite 26 to a lower portion thereof, and has a stirring blade 28 that rotates by a motor to stir the bentonite 26. Meanwhile, external tap water is supplied into the bentonite hopper 24. Therefore, the bentonite 26 can smoothly pass through the bentonite pipe 56 in a state of being mixed with tap water.

The second electrocoagulation processing unit 30 accommodates water therein and has a treatment tank 32 having an open upper portion, and a plurality of electrodes arranged in parallel with each other in the interior of the treatment tank 32 and perpendicular to the ground. The plate 20 and the electricity supply and control part 22 which apply electricity to each said electrode plate 20 are provided. In addition, the upper part of the treatment tank 32 is provided with a sludge discharge conveyor 16 to take out the contaminants supported by the upper portion to the outside.

The sludge discharge conveyor 16 is a belt that moves by scraping the contaminants by circulating by the motor by moving the contaminants supported above the treatment tank 32 to the outside of the treatment tank 32 in a coagulated state. Have The contaminant aggregated in the treatment tank 32 but sank to the bottom is discharged to the outside through the discharge pipe 60.

Hereinafter, the same reference numerals as the above reference numerals are the same members having the same function, and description thereof will be omitted.

The bottom surface of the treatment tank 32 is inclined downward to the center thereof, and a sludge discharge groove 48 is provided at the center thereof. Therefore, various contaminants settled on the bottom surface of the treatment tank 32 are collected in the sludge discharge groove 48 by inclination and then discharged through the discharge pipe 60.

The contaminants that settle on the bottom surface but do not move to the sludge discharge groove 48 that are deposited on the bottom surface are removed by the scraper 46. The scraper 46 is a well-known blade in contact with the bottom surface of the treatment tank 32 is fixed to the drive shaft 62 axially rotated by the motor to scratch the bottom surface when the motor is driven, the sludge discharge groove 48 Move to.

In the second electrocoagulation processing unit 30 formed as described above, the water supplied from the first electrocoagulation processing unit 14 through the connection pipe 58 is accommodated in each of the electrode plates in a state of being contained in the treatment tank 32. It is electroaggregated between 20. That is, when electricity is applied to each of the electrode plates 20 as in the first electrocoagulation processing unit 14, contaminants in the floating water floating between the electrode plates 20 aggregate and float upwards or go downwards. I will sit down.

The contaminants supported at the top are discharged by the sludge discharge conveyor 16, and the contaminants sinking to the bottom are discharged through the discharge pipe 60 through the sludge discharge groove 48 by the scraper 46.

On the other hand, the sterilizing water supply unit supplies sterilizing water into the treatment tank 32 of the second electrocoagulation processing unit 30.

The sterilizing water supply unit is connected to the external water pipe 50, the salt tank 34 is filled with salt therein, and the salt water pipe 52 connecting the salt tank 34 and the treatment tank 32. ), A sterile water discharge pipe 44 connected to an end of the brine pipe 52 and having a plurality of holes formed on an outer circumference thereof so as to spray water upward in the treatment tank 32, and the brine pipe 52. It includes an ultraviolet sterilization unit 38 for supplying sterilized air to the internal flowing salt water.

The salt tank 34 receives the external tap water and passes the tap water into salt water so that the water passing through the salt contact with the salt. Therefore, the tap water supplied through the water pipe 50 changes into salt water while passing through the salt tank 34 and is pumped to the treatment tank 32 through the pump 36. Of course, the salt in the salt tank must be replenished.

The ultraviolet sterilization unit 38 is a device for applying sterilization air in the brine so that the brine moving into the treatment tank 32 is changed to sterilization water. That is, oxygen ions of air are added to sodium ions and chlorine ions in brine to form known sodium chlorate (NaOCl). The ultraviolet sterilization unit 38 is in communication with the brine pipe 52 through the sterilization air pipe (64).

The UV sterilization unit 38 passes outside air into the inside to sterilize molds and various bacteria mixed in the air. The ultraviolet sterilization unit 38 is installed in the air passing tube 43 and the air passing tube 43 to communicate with the salt water pipe 52 through the sterilization air pipe 64 and to pass air therein. It consists of an air sterilization lamp 42 which sterilizes bacteria in the air by exposing ultraviolet light to the passing air.

The intake port of the air passing tube 43 is opened to the outside so that the outside air is naturally inhaled and sterilized. However, according to the embodiment, a separate blower 40 may be applied to force the blower 40 to inject air into the air passing tube 43 to make more sterilizing air.

The sterilizing water (sodium chloride, NaOCl) produced by the ultraviolet sterilizing unit 38 flows into the treatment tank 32 and is ejected through the sterilizing water discharge pipe 44. Since the sterilized water discharged from the sterilized water discharge pipe 44 has a sterilizing component, it sterilizes various microorganisms in the water to be electrocoagulated and purifies the cleaner water.

In addition, since sterilization air remains in the sterilizing water discharged from the sterilizing water discharge pipe 44, the sterilizing air is floated in the water and more rapidly supports the contaminants aggregated between the electrode plates 20.

Operation of the wastewater treatment apparatus of the present invention made as described above is made as follows.

First, the pump 12 is operated to move the water in the original waste water tank 10 to the first electrocoagulation processing unit 14. At the same time, the electricity supply and the control unit 22 are controlled to apply electricity to the electrodes in the first electrocoagulation processing unit 14 to coagulate the wastewater introduced into the treatment tank 18. As described above, when electricity of the positive electrode and the negative electrode is applied to each electrode, the contaminants suspended in the wastewater are neutralized by mutually known principles of electroaggregation and are mutually bonded to gradually increase in size to float upward or sink downward.

The contaminants supported at the top in the aggregated state are removed to the outside by the sludge discharge conveyor 16 and the contaminants sinking to the bottom are discharged through the discharge pipe 60.

On the other hand, while the raw waste water flows through the wastewater pipe 54 to the first electrocondensation processing unit 14, the bentonite 26 is also the first electrocondensing processing unit through the bentonite pipe 56 and the wastewater pipe 54. Go to (14). The bentonite is a kind of clay, so that contaminants are better aggregated.

In any case, the water in which the coagulation process is performed in the first electrocoagulation processing unit 14 moves to the second electrocoagulation processing unit 30 via the connection pipe 58. The water moved to the second electrocoagulation processing unit 30 is treated by the same treatment method as the first electrocoagulation processing unit 14 to cause aggregation of residual contaminants in the water.

The contaminants condensed in the second electrocoagulation processing unit 30 are lifted upward and discharged by the sludge discharge conveyor 16 or sink to the bottom to collect in the sludge discharge groove 48 and then discharge pipe 60. Is discharged through.

In addition, as described above, the sterilizing water is injected into the treatment tank 32 during the secondary electrocoagulation process. The sterilizing water is sterilized through the plurality of holes formed in the outer circumference of the sterilizing water discharge pipe 44 to sterilize microorganisms in the water to be aggregated.

Water subjected to the secondary coagulation and sterilization of water through the second electrocoagulation treatment unit 30 is discharged to the outside as treated water.

Figure 2 is a flow chart showing the wastewater treatment method using the wastewater treatment apparatus having an electrocoagulation treatment unit and a sterilizing water supply unit according to an embodiment of the present invention for reference. The wastewater treatment method used includes the raw wastewater supply step 101, the bentonite supply step 103, the primary electrocoagulation treatment step 105, the secondary electrocoagulation treatment step 107, and the sterilization step 109. Is made of.

The wastewater supply step 101 is a step of moving the water in the wastewater tank 10 to the first electrocoagulation processing unit 14 using the pump 12.

The bentonite supply step 103 flows bentonite into the wastewater pipe 54 through which water in the wastewater tank 10 flows so that bentonite 26 moves to the treatment tank 18 together with the wastewater. to be.

In addition, the primary electrocondensation treatment step 105 is a step of agglomeration of contaminants in the wastewater supplied into the treatment tank 18 through a known electrocoagulation reaction and discharged to the outside.

The secondary electrocoagulation processing step 107 following the primary electrocoagulation processing step 105 performs the same operation as the primary electrocoagulation processing step 105 and secondaryly removes residual contaminants in the water.

In addition, the sterilization step 109 is performed at the same time as the secondary electrocoagulation process to sterilize the microorganisms in the water by adding the sterilizing water sodium chloride rate (NaOCl) to the inside of the treatment tank (32).

The present invention has been described in detail through specific embodiments, but the present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. .

The present invention made as described above, the electro-aggregation treatment for the waste water is repeatedly performed through two treatment tanks connected in series, the electro-aggregation treatment effect is high, in particular by injecting the sterilizing water upwards in the second electro-coagulation treatment unit to agglomerate Induction of rapid support of contaminants in a state of course, there is an effect that can be performed at the same time sterilization of various microorganisms.

Claims (6)

By removing the contaminants in the wastewater supplied from the outside through the wastewater pipe 54 through an electrocoagulation reaction, a treatment tank 18 containing the supplied wastewater and vertically in the treatment tank 18. A plurality of electrode plates 20 and parallel to each other, and the electric supply and the control unit 22 to apply a direct current to each of the electrode plates 20 so that the neighboring electrode plate 20 has the opposite electrode mutually A first electrocoagulation processing unit 14 comprising; It is connected to the first electrocoagulation processing unit 14 to receive the water passed through the first electrocoagulation processing unit 14 to remove residual contaminants in the water through an electrocoagulation reaction, to receive the supplied water The electrode 32, the plurality of electrode plates 20 provided perpendicularly and parallel to each other in the processing tank 32, and DC electrodes are applied to each of the electrode plates 20, but adjacent electrode plates are opposite to each other. A second electrocoagulation processing unit 30 including an electric supply and a control unit 22 to have a; The electrocoagulation processing unit and the sterilizing water supply unit, characterized in that it comprises a sterilizing water supply unit for supplying sterilization water into the treatment tank 32 of the second electrocoagulation processing unit 30 to sterilize the water during the electrocoagulation process. Having a wastewater treatment device. The method of claim 1, The sterilizing water supply unit; It is filled with salt inside, and is supplied with water from the outside through the water pipe 50, and connected to the treatment tank 32 of the second electrocoagulation processing unit 30 through the brine pipe 52, from the outside. Salt tank 34 to be supplied to the treatment tank 32 by changing the supplied tap water to brine, It includes an ultraviolet sterilization unit 38 is connected to the brine pipe 52 to apply the sterilization air to the salt water moving from the salt tank 34 to the second electrocoagulation processing unit 30 to produce sodium chlorate (NaOCl) (38). Wastewater treatment apparatus having an electrocoagulation treatment unit and a sterilizing water supply unit. The method according to claim 1 or 2, An apparatus for treating wastewater having an electrocoagulation treatment unit and a sterilizing water supply unit, further comprising a bentonite supply unit for supplying bentonite to the raw wastewater moving to the first electrocoagulation unit. The method of claim 3, wherein The bentonite supply unit; A hopper 24 accommodating bentonite 26 therein, stirring means for stirring the bentonite 26 in the hopper 24, and the hopper 24 and the wastewater pipe 54 are connected to the bentonite in the hopper. An electrocoagulation treatment unit and a sterilizing water supply unit, characterized in that (26) flows into the wastewater pipe 54 and is made of bentonite pipes 56 to be supplied to the first electrocoagulation processing unit 14 together with the wastewater. Wastewater treatment device. The method of claim 2, The ultraviolet sterilization unit 38; One or more air passage tubes 43 connected to the brine pipe 52 to allow the outside air to pass through to the brine pipe 52; An air condensation treatment unit and a wastewater treatment device having a sterilizing water supply unit, characterized in that it comprises an air sterilization lamp (42) installed in the air passage tube (43) to ultraviolet sterilize the air passing through the air passage tube (43). . delete