WO2011025183A2

WO2011025183A2 - Integrated sewage reuse device

Info

Publication number: WO2011025183A2
Application number: PCT/KR2010/005501
Authority: WO
Inventors: 김현호; 이재창
Original assignee: Kim Hyun Ho; Lee Jae Chang
Priority date: 2009-08-31
Filing date: 2010-08-19
Publication date: 2011-03-03
Also published as: KR100943987B1; WO2011025183A3

Abstract

The present invention relates to an integrated sewage reuse device which is applicable to multi-purpose facilities or industries and sewage disposal plants, realizes a high processing efficiency by using the electro-coagulation method, and reduces driving costs. According to the present invention, the sewage reuse device comprises: a sewage tank (10) in which sewage is collected; a screen (20) which eliminates primary concomitants of the sewage transferred through a feeding line (91) that is connected to the sewage tank (10); a magnetic field generator (30) which atomizes molecules of the sewage that has passed through the screen (20); an electro-coagulation unit (40) which purifies the sewage by the electro-coagulation method; primary filters (50) and a secondary filter (60) which sequentially filter the wastewater purified in the electro-coagulation unit (40); an ozone generator (71) which sterilizes and eliminates the residual contaminants that have not been treated from the filtered wastewater; a chlorine injector (72) which injects chlorine into the wastewater; a wastewater tank (80) which stores the wastewater; and a controller which controls the overall operation of the sewage reuse device.

Description

Integrated sewage reuse device

The present invention relates to a device for treating and recycling sewage in a multi-use facility, industry, sewage treatment plant, etc. More specifically, an electro-coagulation method for sewage discharged from a multi-use facility, industry, sewage treatment plant, etc. The present invention relates to an integrated sewage recycling apparatus for purifying by using, and filtration and sterilization through a plurality of filtration and sterilization apparatuses so as to be reused by making them into water or industrial water.

In general, the multi-use facilities such as residential shopping malls, passenger terminals, large-scale marts, hospitals, public institutions, highway rest areas, military units, and government offices provide the drinking water, drinking water pipes, or drinking water pipes. It is temporarily stored in the water tank and supplied to the digestive or living water pipe.

In the related art, when the water is stopped, there is a problem in that not only the fire extinguishing facility but also the living water and drinking water are dependent on the water stored in the water tank, and thus the living water is insufficient and becomes defenseless against fire.

In addition, since only the water is used as a source and discarded in one-time use, water was not used because it was not economical and there was a problem that adversely affects environmental pollution.

In order to solve this problem, it is urgently needed to develop a sewage reuse device that can save water and prevent environmental pollution by treating sewage discharged from multi-use facilities by recycling it to heavy water or industrial water. Most of the sewage reuse devices that have been used are large and complex due to biological treatment or chemical treatment, and thus have a large installation area, high maintenance costs, and low treatment efficiency, making them difficult to apply to sewage reuse.

In addition, the conventional heavy water treatment device has a number of problems such as a high cost for recovery time or maintenance when the seasonal factors or other problems occur, and the treatment efficiency is significantly lowered for long time use because it is difficult to clean the reactor. There is a problem.

The present invention is to solve the above problems, the object of the present invention is made of a simple configuration is particularly suitable for applying to multi-use facilities, by using the electro-coagulation method is high processing efficiency and operating cost An integrated sewage recycling apparatus can be reduced.

The present invention for achieving the above object, the magnetic field generator for atomizing the sewage molecules supplied from the outside; An electrocoagulation unit for purifying the sewage supplied through the magnetic field generator by electro-coagulation; A filter for filtering out residual contaminants from the purified water through the electrocoagulation unit; It provides an integrated sewage recycling apparatus comprising a treated water collecting tank for storing the treated water passing through the filter.

According to one aspect of the present invention, the electroaggregation unit includes: an electrocoagulation reactor for receiving sewage from the outside and purifying the sewage by electrocoagulation; A plurality of power supply blades installed in the electrocoagulation reactor and electrically connected to an external power source to receive power; A plurality of metal blades disposed between the power blades; It may be configured to include a microbubble diffuser installed in the lower portion of the electrocoagulation reactor to generate a fine bubble.

Here, the blade is preferably formed with fine embossing on the surface in order to increase the surface area.

In addition, the microbubble diffuser is made of a porous hollow tube formed with fine pores through which air is discharged.

According to another aspect of the present invention, the electrocoagulation unit may further comprise a reaction vessel washer for supplying washing water into the electrocoagulation reactor for washing the electrocoagulation reactor.

In addition, the magnetic field generator may be composed of a hollow tube-shaped body mounted on the inlet of the electrocoagulation unit, and a plurality of semi-cylindrical magnets with high-density special processing mounted on the upper and lower portions of the inner circumferential surface of the body. .

According to yet another aspect of the present invention, the sewage recycling apparatus of the present invention has one end connected to the treated water collecting tank and the other end connected to the outlet side of the filter to supply the treated water of the treated water collecting tank to the filter. And a pump for pumping the treated water for washing to the strainer through the backwashing pipe, a drain pipe connected to the inlet side of the strainer to wash the strainer, and guide the treated water discharged to the outside, and to the strainer. It may be configured to further include a compressed air supply unit for supplying compressed air for washing.

According to the present invention, the sewage reuse device of the present invention by making the particles of the sewage flowing into the electrocoagulation unit through the magnetic field generator finer, the electrocoagulation action can be made more smoothly to improve the treatment efficiency, scale or pollutants Of course, there is an advantage of easy maintenance by removing pipe rust and dirt.

In addition, since the blade in the electrocoagulation reactor of the electrocoagulation unit has a special surface treatment in the form of fine embossing to increase the surface area, ion elution is more smoothly performed, and thus the electrocoagulation action is more active, thereby further improving the treatment efficiency. In addition, operating costs can be significantly reduced by minimizing power costs.

In addition, unlike the existing sewage reuse device is configured to continuously react and filter without having a separate treatment tank or filtration tank for biological treatment or chemical treatment. Therefore, a large installation area such as a conventional wastewater treatment apparatus is not required, and various components may be packaged to implement a compact and integrated sewage recycling apparatus.

Advantages of the present invention as described above provide the advantage that the sewage reuse device of the present invention can be advantageously applied not only to facilities such as industrial or sewage treatment plants, but also to multi-use facilities with a narrow or limited installation area.

1 is a block diagram schematically showing the configuration of an integrated sewage recycling apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a process of treating sewage water in the sewage recycling apparatus of FIG. 1.

3 is a block diagram illustrating a process of washing the filter in the sewage recycling apparatus of FIG.

4 is a cross-sectional view illustrating main parts of the magnetic field generator of the sewage recycling apparatus of FIG. 1.

FIG. 7 is a perspective view illustrating a magnet of the magnetic generating device of FIG. 4.

6 is a cross-sectional view schematically illustrating main parts of an internal structure of an electrocoagulation reactor of the sewage recycling apparatus of FIG. 1.

FIG. 7 is a cross-sectional view schematically illustrating another example of the internal structure of the electrocoagulation reactor of the sewage recycling apparatus of FIG. 1.

8 is a front view showing an embodiment of the blade of the sewage reuse device of FIG.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the integrated sewage recycling apparatus according to the present invention.

1 to 8 illustrate an integrated sewage recycling apparatus according to an embodiment of the present invention, the integrated sewage recycling apparatus of the present invention includes a front end portion mainly composed of an electroaggregation unit for treating water sewage by electrocoagulation. It is composed of the rear end composed of the main shaft filtration device for various sites.

First, referring to FIG. 1, the sewage recycling apparatus of the present invention removes primary sewage from the sewage tank 10 through which the sewage is collected and the sewage pumped through the supply pipe 91 connected to the sewage tank 10. A screen 20, a magnetic field generator 30 for atomizing the sewage molecules passing through the screen 20, an electrocoagulation unit 40 for treating the sewage by electro-coagulation, and The primary filter 50 and the secondary filter 60 to sequentially filter the treated water from the electrocoagulation unit 40, and the ozone generator to sterilize and remove untreated residual contaminants of the filtered water. 71, a chlorine injector 72 for injecting chlorine into the treated water, a treated water collecting tank 80 for storing the treated water, and a controller (not shown) for controlling the overall operation of the sewage recycling apparatus.

The sewage collection tank 10 is connected to a pH adjuster 11 for adjusting the acidity. The sewage collection tank 10 is equipped with a pH sensor and a flow meter.

The screen 20 is installed on the outlet of the sewage collection tank 10 or on the conduit of the supply pipe 91 connecting the sewage collection tank 10 and the electrocoagulation unit 40, from the sewage collection tank 10 to the electrocoagulation unit. The large lumps of contaminants are primarily filtered from the sewage pumped to (40).

As shown in FIGS. 4 and 5, the magnetic field generator 30 has a hollow tube-shaped body 31 mounted to an inlet of the electrocoagulation reactor 41 of the electrocoagulation unit 40, and the body ( It consists of a magnet 32 mounted around the periphery 31. In this embodiment, the magnet 32 is specially processed to have a high density of magnetic force, made of a semi-cylindrical and attached to the upper and lower inner peripheral surfaces of the body 31, respectively. The magnet 32 of the magnetic field generator 30 functions to make the molecular structure of sewage particles fine to improve the dissolving power and cleaning power of contaminants, and to keep the inside of the pipe clean by suppressing rust, water moss, and scale of the pipe. Do it.

Again, referring to FIG. 1, the electrocoagulation unit 40 receives sewage from the sewage collection tank 10, an electrocoagulation reactor 41 for purifying sewage by electrocoagulation, and the electrocoagulation reactor 41. The microbubble diffuser 42 is installed at the lower end of the interior to generate fine bubbles, and the reaction tank washer 43 for providing washing water into the electrocoagulation reactor 41 for cleaning the electrocoagulation reactor 41. do. Although not shown in the figure, the electrocoagulation unit 40 includes a DC power supply 47 for supplying DC power to the blade 44 (see FIG. 6) for power in the electrocoagulation reactor 41. In addition, a sensor (not shown) for measuring the voltage of the blade 44 for the power supply is installed inside the electrocoagulation reactor 41, and when the voltage between the blades 44 for the power becomes a set voltage, for example, 3V or less, the blade Replace 45 or wash the interior of the electrocoagulation reactor 41 is performed.

The electrocoagulation reactor 41 is preferably installed in one or more in parallel to minimize the installation area.

As shown in FIG. 6, the electrocoagulation reactor 41 is disposed between the plurality of power blades 44 connected to an external DC power source and the power blade 44 to generate an electrochemical reaction. The plurality of blades 45 are arranged vertically or horizontally. The power blade 44 is preferably made of an insoluble metal such as stainless steel so that it can be used semi-permanently with little replacement. The power supply blades 44 disposed at both ends of the power supply blades 44 are connected to the electrodes of the DC power supply 47, and are periodically supplied with power while their polarities are changed.

In this embodiment, the power blades 44 disposed at both ends of the electrocoagulation reactor 41 are connected to the DC power supply 47 to form a single chamber structure. Alternatively, the power blades 44 according to the degree of pollution of the sewage. By varying the electrode arrangement connected to the) may be divided into a plurality of chamber structure in one reactor to perform the electrocoagulation action.

For example, as illustrated in FIG. 7, the power blades 44 at both ends of the electrocoagulation reactor 41 and the power blades 44 in the center are connected to the DC power supply 47 to form the inside of the electrocoagulation reactor 41. May be divided into two chamber structures.

6 and 8, the blades 45 are made of a soluble metal such as iron or aluminum from which ions are eluted, and the surface is specially treated to increase the surface area, thereby forming fine embossings. have. In addition, the hole 46 is preferably formed at the center of the upper end of the blade 45 so that the blade 45 can be easily detached from the electrocoagulation reactor 41.

The microbubble diffuser 42 generates fine bubbles in the lower portion of the electrocoagulation reactor 41 to facilitate the removal of contaminants of sewage and flotation of sedimentary flocculate in the electrocoagulation reactor 41 and the blades 45. To prevent the scale from adsorbing and remove some of the contaminants. The microbubble diffuser 42 is connected to an external air supply 97 to receive compressed air, and is made of a porous hollow tube made of a material such as ceramic having ultra-fine pores formed on a surface thereof. The air supplier 97 may be configured using, for example, an air compressor or a blower, an air pump, or the like.

Referring back to FIG. 1, the reaction vessel washer 43 of the electroaggregation unit 40 performs the electroaggregation process in the electroaggregation reactor 41 according to the characteristics of the contaminants for a predetermined time, and then performs the electroaggregation reactor 41. Supplying the washing water to the inside, and after a certain period of time by washing or discharged the washing water is completed through the sewage pipe to act to wash the electrocoagulation reactor (41).

The primary filter 50 and the secondary filter 60 filter the treated water treated in the electrocoagulation reactor 41 to filter the contaminants contained in the treated water. The primary filter 50 may be configured using a carbon, a sand filter, or a mixed filter, but is not limited thereto. In addition, the secondary filter 60 may be configured using a micro filter, but is not limited thereto. In this embodiment, the primary filter 50 may be configured in plural (two) in parallel, but alternatively may be configured in a single.

In addition, the primary filter 50 and the secondary filter 60 is connected to the air supply 97 for washing and is supplied with compressed air, and the treated water collection tank through the backwashing pipe 92 80) to supply water for cleaning. The backwashing pipe 92 is provided with a third pump 96 for pumping water from the treated water collecting tank 80 to the primary filter and the

secondary filter

50, 60. The water which has been washed in the primary filter and the secondary filter (50, 60) is discharged to the sewage pipe through the drain pipe (93).

The ozone generator 71 treats untreated contaminants and sterilizes by injecting ozone into a supply pipe 91 connected to the treated water collecting tank 80. The ozone generator 71 is preferably configured to be able to adjust the concentration according to the flow rate.

In addition, the chlorine injector 72 is connected to the supply pipe 91 connected to the treated water collection tank 80 to inject a predetermined amount of chlorine, and like the ozone generator 71 to adjust the concentration of chlorine according to the flow rate. It is preferred to have a flow meter and a metering pump.

The controller (not shown) integrally controls all components of the sewage reuse device, and is configured to enable real-time monitoring, feedback control, and remote control.

In FIG. 1, reference numeral 94 denotes a first pump for pumping sewage from the sewage collecting tank 10 to the electrocoagulation unit 40, and reference numeral 95 is an electrocoagulation unit 40 to the primary filter 50. It is a 2nd pump which feeds process water. In addition, reference numerals V1 to V15 are valves for controlling the flow of sewage or treated water through respective pipes, and the valves may use a well-known valve such as an electric valve or a pneumatic valve. In this case, the pneumatic valve is preferably configured to be connected to the air supply 97 to receive the pneumatic pressure.

The sewage reuse device configured as above operates as follows.

2 is a view showing a process of water treatment of sewage, when the sewage is stored in the sewage collection tank 10 at a certain level, the first pump 94 is operated to adjust the pH (pH) of the sewage collection tank 10 Sewage flows through the supply pipe (91). At this time, the sewage is filtered through the screen 20 while the primary contaminants are filtered out, and the sewage molecules are granulated by the magnetic field generator 30.

The sewage that has passed through the magnetic field generator 30 is introduced into the electrocoagulation reactor 41 through an inlet port under the electrocoagulation reactor 41. At this time, the power is applied to the blade 44 for power in the electrocoagulation reactor 41, the sewage is electrolyzed, and the metal ions eluted from the electrode destabilize the particles stably present and at the same time floc to remove contaminants. And flocculate harmful substances by electrical oxidation and reduction.

In this way, the compressed air is supplied from the air supplier 97 to the microbubble diffuser 42 while the electrocoagulation action is performed in the electrocoagulation reactor 41, and ultra-bubbles are released from the microbubble diffuser 42. . The microbubbles released from the microbubble diffuser 42 facilitate the removal of contaminants of sewage and flotation of sedimentary flocculate in the electrocoagulation reactor 41 to prevent the scale from adsorbing to the blade 45. do.

The treated water purified by the electrocoagulation reactor 41 is sequentially introduced into the primary filter 50 and the secondary filter 60 by the second pump 95 to filter out residual condensate and contaminants that have not been contaminated.

The treated water passing through the secondary filter 60 is sent to the treated water collecting tank 80 through the supply pipe 91, in which a certain amount of ozone is injected by the ozone generator 71 to perform sterilization. In addition, a certain amount of chlorine is injected through the chlorine injector 72.

The treated water treated through the above process is stored in the treated water collecting tank 80 and then reused as reused water for heavy water or other uses.

On the other hand, after performing the above-described purification process for a predetermined time is a process of washing the primary filter 50 and / or secondary filter 60 is performed. As shown in FIG. 3, in this washing process, the flow of sewage through the supply pipe 91 is blocked, and the pipeline of the backwashing pipe 92 is opened. Then, the third pump 96 is operated to pump the treated water in the treated water collecting tank 80 to the primary filter 50 and / or the secondary filter 60 through the backwashing pipe 92. The treated water supplied to the primary filter 50 and / or the secondary filter 60 flows in from the outlet side of the primary filter 50 and / or the secondary filter 60 so that the primary filter 50 and / or The washing is performed while the secondary filter 60 is flowed upside down and then discharged to the sewer pipe through a drain pipe 93 connected to the inlet side of the primary filter 50 and / or the secondary filter 60.

When performing the washing process for the primary filter 50 and / or secondary filter 60 as described above, through the air supply 97 to the primary filter 50 and / or secondary filter 60 Compressed air can be supplied to make the cleaning more smooth.

In addition, the electroagglomeration reactor 41 of the electrocoagulation unit 40 is also periodically required to clean, first discharge the sewage in the electrocoagulation reactor 41 to the outside to empty the inside of the electrocoagulation reactor 41, the reaction vessel washer Supply wash water from (43) and fill up to the set level. When the set time has elapsed in this state, the washing is discharged to the outside or recovered again to the reaction vessel washer 43, the washing is completed.

As described above, the sewage recycling apparatus of the present invention has an advantage that the electrocoagulation action can be made more smoothly by making particles of sewage flowing into the electrocoagulation unit 40 through a magnetic field generator, thereby improving treatment efficiency. .

In addition, since the surface of the blade 45 in the electrocoagulation reactor 41 has a special surface treatment, fine embossing is formed to increase the surface area, ion elution is more smoothly performed, and thus the electrocoagulation action becomes more active, thereby improving treatment efficiency. It can be further improved, and power consumption can be reduced.

In addition, unlike the conventional wastewater treatment device is configured to continuously react and filter without placing a separate treatment tank or filtration tank. Therefore, a large installation area such as a conventional wastewater treatment apparatus is not required, and various components may be packaged to implement a compact sewage reuse device.

On the other hand, in the above-described embodiment of the sewage recycling apparatus, the electroaggregation reactor 41 of the electroaggregation unit 40 is configured as one, but alternatively, the electroaggregation reactor 41 may be configured in plural in parallel.

The present invention can be applied to a sewage reuse device or a sewage treatment device for purifying sewage discharged from a multi-use facility, an industry, a sewage treatment plant and the like.

Claims

A magnetic field generator for atomizing the sewage molecules supplied from the outside;

An electrocoagulation unit for purifying the sewage supplied through the magnetic field generator by electro-coagulation;

A filter for filtering out residual contaminants from the purified water through the electrocoagulation unit;

A treated water collecting tank for storing the treated water passing through the filter;

A backwashing pipe, one end of which is connected to the treatment water collection tank and the other end of which is connected to the outlet side of the filter to supply the treated water of the treatment water collection tank to the filter;

A pump for pumping the treated water for cleaning to the filter through the backwashing pipe;

A drain pipe connected to the inlet side of the filter to guide the treated water discharged after washing the filter to the outside;

Integrated sewage recycling apparatus comprising a compressed air supply unit for supplying compressed air for cleaning to the filter.
The method of claim 1, wherein the electrocoagulation unit,

An electrocoagulation reactor for receiving sewage from the outside and purifying the sewage by electrocoagulation;

A plurality of power supply blades installed in the electrocoagulation reactor and electrically connected to an external power source to receive power;

A plurality of metal blades disposed between the power blades;

Integral sewage recycling apparatus, characterized in that it comprises a microbubble diffuser installed in the lower portion of the electrocoagulation reactor to generate fine bubbles.
3. The integrated sewage recycling apparatus according to claim 2, wherein the electrocoagulation unit further comprises a reaction vessel washer for supplying washing water into the electrocoagulation reactor for washing the electrocoagulation reactor.
3. The integrated sewage recycling apparatus of claim 2, wherein the blade has fine embossing formed on its surface to increase its surface area.
The integrated sewage recycling apparatus according to claim 2, wherein the microbubble diffuser is made of a porous hollow tube having fine pores through which air is discharged.
The magnetic field generator of claim 1, wherein the magnetic field generator comprises a hollow tube-shaped body mounted at the inlet of the electrocoagulation unit, and a plurality of semi-cylindrical magnets mounted at upper and lower portions of the inner circumferential surface of the body. Sewage Recycling Device.