KR20090111188A - Discharged Water Treatment System and Method for Treating Discharged Water Using the Same - Google Patents

Abstract

PURPOSE: A discharge water processing system is provided to offer economical efficiency and convenient usability, and to recycle the discharge water more efficiently. CONSTITUTION: A discharge water processing system includes a submerged-type fibrous filter or a submerged-type ultraviolet sterilizing device in a filtering disinfection discharge tank(80). The submerged-type fibrous filter includes a photocatalytic coating fiber filter, a reducer, and an inverter. The submerged-type fibrous filter is formed on the top of a discharge water tank flame. The submerged-type ultraviolet sterilizing device is connected with a u-shaped pipe and a discharge water pipe.

Description

Discharged Water Treatment System and Method for Treating Discharged Water Using the Same}

The present invention relates to an integrated effluent treatment system and a method for treating effluent using the same, and more specifically, an immersion type fiber filter and an immersion type ultraviolet disinfection device are installed integrally in a filtration disinfection tank to be effectively used in a small or village sewage treatment plant. An integrated effluent treatment system and a method for treating effluent using the same.

In Korea, it is difficult to secure stable water resources due to severe rainfall changes according to regions and seasons. In addition, with the rapid increase of urban use and industrialization, the increase of water usage, decrease of green area, and increase of the impermeable layer area such as concrete and asphalt have led to the decrease of groundwater.

Therefore, sewage, waste water, and process water that are used and discarded should be treated and reused repeatedly.In order to prevent water pollution and ensure stable and economical water resources, it is possible to economically reprocess sewage with low pollution to clean, landscaping, The biggest concern is the water-sewer system that purifies and recycles water from toilets and the like. Although the quality of the water is clean, the better it is, but it is important to make the water quality suitable for the purpose considering the treatment cost. The goal of water quality is to protect the user's health, to ensure pleasant use and stability, and the following basic matters should be reviewed and there should be no hygiene problems. In addition, there should be no inconvenience in use, no discomfort, and no adverse effect on the facility or apparatus. In addition, stability of treatment technology should be established and appropriate indicators for securing and determining maintenance levels.

Generally, water treatment technologies for treating sewage and sewage include physicochemical treatment, aerobic treatment, anaerobic treatment, biological treatment by animals and plants or microorganisms having unit processes such as flocculation, sedimentation, separation, adsorption, ion exchange, and oxidation. Multi-stage treatments have been developed in which the physicochemical treatment and biological treatment processes are combined as a unit process and processed in conjunction with each other. Normal screen filtration, agglomeration by chemical injection, sedimentation treatment, activated carbon filtration, etc. alone require a lot of operating costs, and it is not efficient water treatment, and the treated water quality is not good. Biological treatment using activated sludge requires a large treatment space, takes a long time to treatment, as well as professional management, there is a problem of excessive treatment costs. As a conventional sterilization treatment to ensure the stability of water, there is also a method of administering chlorine or antibiotics in water, but this is a sterilization action, but the disinfectant remains in water and reacts with other compounds to cause secondary pollution. There is a problem with stability after.

According to the existing technology, the most commonly used filter for treating suspended solids and turbidity in Korea and foreign countries is the filtrate, which removes suspended solids, turbidity, and color using sand and small gravel. Due to the poor treatment efficiency, it is currently being replaced by another filter. Aqua disk filter filter is difficult to cope with individual equipments due to inflow water quality and flow rate change. In addition, the micro-disc filter does not include a single drive method, so it is impossible to deal with the failure of the main body and its accessories.The gravity automatic backwash filter has a very large possession area, a high initial investment cost, and a large amount of backwash water, which affects the return load. There is a problem that the cost is increased. The resin crimping type also has a relatively large required area, a relatively large amount of media, and a large amount of backwashing water, which affects the conveyance load and increases the reprocessing cost.

The submerged UV disinfection device system, which is usually a secondary treatment process, has been used with a water channel type installed horizontally in water and a pipe type installed vertically or horizontally with a chamber tube. This is a problem that requires a separate tank or space for the pipeline UV device.

Accordingly, the present inventors confirmed that, when the immersion type fiber filter and the immersion type UV device are integrally installed inside the filtration disinfection tank, the effluent can be efficiently treated in a narrow space and recycled into heavy water and landscape water, thereby completing the present invention. Was done.

An object of the present invention is to provide a effluent treatment system and a method of treating effluent using the same, which can be easily installed even in a narrow place, and can be efficiently recycled to heavy water and landscape water by treating the effluent.

In order to achieve the above object, the present invention is a discharge water treatment system comprising a flow rate adjustment tank, an anoxic tank, an aerobic tank, a sedimentation tank, a sludge storage tank and a filtration disinfection tank, in the immersion type fiber filter and the immersion filter inside the filtration disinfection tank It provides an integrated effluent treatment system, characterized in that the immersion type ultraviolet disinfection device for sterilizing the filtered effluent water is installed.

The present invention also provides a method for treating effluent water, wherein the integrated effluent treatment system is used.

In the integrated effluent treatment system according to the present invention, since an immersion type fiber filter and an immersion type UV disinfection device are installed in the filtration disinfection tank, it can be easily installed even in a narrow place without a separate space. Therefore, when it is installed in a small village sewage treatment plant, it is not only useful for recycling effluent to heavy water and landscape water, but also economically desirable.

The present invention provides a discharge water treatment system including a flow rate adjustment tank 30, an oxygen-free tank 40, an aerobic tank 50, a settling tank 60, a sludge storage tank 70, and a filtration disinfection discharge tank 80 at a consistent point. An integrated effluent treatment system, characterized in that the immersion type fiber filter 2 and the immersion type ultraviolet disinfection device 1 for sterilizing the effluent filtered by the immersion type filter 2 are installed inside the filtration disinfection and discharging tank 80 ( 100).

As shown in Figure 1, the effluent treatment system 100 according to the present invention, as a conventional effluent treatment system, the flow adjustment tank 30, anoxic tank 40, aerobic tank 50, sedimentation tank 60, sludge storage tank ( 70) and the filtration disinfection and discharging tank 80 may be provided. However, the effluent treatment system 100 according to the present invention is an immersion type ultraviolet disinfection apparatus for sterilizing the effluent filtered in the immersion type fiber filter (2) and the immersion type fiber filter (2) in the filtration disinfection tank (80) It is characterized by the installation (1).

Figure 2 shows a detailed structure of the immersion type fiber filter and immersion type ultraviolet disinfection device.

The submerged fiber filter used in the present invention may be used without limitation as long as it can filter the effluent, but it is preferable to use the submerged fiber filter disclosed in the Korean Patent No. 10-0555055.

The submerged fiber filter includes a photocatalyst coated fiber filtration filter attached to the tubular body, a speed reducer which is a power transmission device for tensioning the fiber by rotating the tubular body of the fiber filtration filter, and an inverter for controlling the rotation speed of the reducer. It is done. That is, the submerged fiber filter 2 may use a photocatalyst fibrous filter, and the photocatalyst fibrous filter is coated with a photocatalyst (c-zon78-1, Envinet, Korea) in the water inside the filtration tank. It is a structure that is immersed and installed, and the upper part of the tank is attached to a speed reducer, which is a power transmission device for dense fibers, and the inverter is able to tension the fibers of the fiber filtration filter to the right and left. The speed reducer is connected to the bevel gear of the fiber filtration filter, and the inverter is capable of regulating and controlling the speed of the speed reducer. Included in the lower part of the submerged fiber filter for washing with air, the air generated in the diffuser is configured to vertically contact the air gap of the submerged fiber filter (2).

The submerged fiber filter according to the present invention is a hollow tube, a housing in which one-way bearing is inserted and a fiber module is attached, a connecting ring for fixing the fiber bundle at both ends of the photocatalytic fiber, a shaft, and a bracket for supporting the hollow tube module. , Fiber filtration filter coated with photocatalyst, Teflon fiber coated with photocatalyst, bevel gear (main gear) for power transmission, bevel gear (local gear) for receiving power from main gear, tension of fiber and Inverter to control rotation speed, reducer as power transmission device, coupling as connection between reducer shaft and bevel gear shaft, diffuser structure with air dispersion module attached to tubular body, tubular channel, slurry discharge pipe, scale It consists of a channel etc. which discharge | release a slurry.

In addition, the immersed fiber filter (2) according to the invention is characterized in that it is located on the discharge tank flame 5 of the 300 ~ 500mm height installed on the bottom of the filter sterilization discharge tank. Therefore, the sludge and foreign matter (SS) having a specific gravity is settled to the bottom, since the sludge concentrated on the bottom is transferred to the sludge storage tank through the air pump 21, the effluent treatment system 100 according to the present invention is efficiently There is an advantage to filter the effluent.

The submerged fiber filter 2 according to the present invention can be operated through a process such as level control to maintain a constant level, washing for separation and removal of foreign matter in the filter, washing of contaminated pipe, continuous operation.

Looking at the level control method, when the water level of the discharge tank is LOW LEVEL (17), the pump (7) is stopped to maintain the minimum level of the discharge tank, and the water level is MID LEVEL (18) and Hi LEVEL (19) after a certain period of time. ), The pump (7) starts to drop the water level. In the Hi LEVEL 19, the large valve 10 is opened, so that the flow rate of the pipe flows a lot and the water level drops. When the water level continues to fall and becomes the MID LEVEL 18, the large valve 10 is locked, and the small valve 9 is opened so that the flow rate of the pipe is reduced than when the large valve is opened, and the water level drops little by little. At this time, it takes more than two hours to fall from Hi LEVEL (19) to Low LEVEL (17) is good to operate.

Determining when to flush the filter of the filter back when the efficiency of the submerged fiber filter 2 decreases and the flow rate of the drain is gradually reduced can be controlled by the Human Machine Interface (HMI) program of the control panel. In other words, when the water level drops from Hi LEVEL (19) to MID LEVEL (18) to Low LEVEL (17) and the level is reduced by about 50%, the filter of the immersion type fiber filter is rotated in reverse to wash foreign substances. Can be. The washing cycle of the filter can be adjusted according to the efficiency of water treatment in the sewage treatment plant.

After cleaning the filter in the strainer, suspended solids can enter the filter and contaminate some piping. Therefore, the contaminated water in the pipe is drained to the sludge storage tank by opening the return valve 8 for at least 1 minute. Then, the return valve 8 is closed and the large valve 10 is opened to continue the process.

The drain pump 7 is installed at the pump base 11 located at the top of the filter, and is installed at the check valve 22 inlet to prevent backflow when the pump is stopped. The pump base 11 has a cover and a drain 12 to maintain the base floor clean. The filtered clean effluent is pumped into an immersion type ultraviolet disinfection device 1 for the sterilization of microorganisms.

Immersion type ultraviolet disinfection device (1) of the integrated effluent treatment system according to the present invention can be used without limitation, the U-shaped tube (3) and filtered sterilized effluent flowing in the effluent filtered in the fiber filter (2) It is preferable to use each connected to the discharge water pipe (4) which is installed penetrating through the one wall surface of the filtration disinfection and discharging tank (80) so as to discharge. That is, the immersion type ultraviolet disinfection device 1 according to the present invention is located in the middle of the U-shaped pipe 3 and the discharge water pipe 4.

The immersion type ultraviolet disinfection device (1) is preferably attached to the cleaning device 14 for maintaining the efficiency of the ultraviolet lamp 16, the ultraviolet lamp 16 is a structure inserted into the quartz tube, when the immersion sealing If possible, the cap of the O-ring structure is clogged with a screw type at the top, and it is preferable to use the sealed wire in the tube.

In another aspect, the present invention relates to a method for treating effluent water, wherein the integrated effluent treatment system is used.

In the present invention, the operation of the effluent treatment system is preferably an HMI (Human Machine Interface) structure of an integrated management method that can control the temperature, level, flow control, power control and oxidation amount by an automatic operation method by a computer. .

Having described the specific parts of the present invention in detail, it will be apparent to those skilled in the art that such specific descriptions are merely preferred embodiments, and thus the scope of the present invention is not limited thereto. will be. Thus, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

1 shows a process diagram of a effluent treatment system in which an immersion type fiber filter and an immersion type ultraviolet disinfection device are integrally installed in a discharge tank.

Figure 2 shows a detailed structure of the immersion type fiber filter and immersion type ultraviolet disinfection device.

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

1: immersion type ultraviolet disinfection device 2: immersion type fiber filter

3: U-shaped pipe 4: discharge pipe

5: flame 6: reducer

7: Pump 8: Return Valve

9: small valve 10: large valve

11: pump base 12: drain

13: flange 14: cleaning device

15: effluent inlet 16: ultraviolet lamp

17: LOW LEVEL 18: MID LEVEL

19: Hi LEVEL 20: HiHi LEVEL

21: air pump 22: check valve

30: flow adjustment tank 40: anoxic tank

50: aeration tank 60: sedimentation tank

70: sludge storage tank 80: filtered sterilization discharge tank

100: effluent treatment system

Claims (7)

In a effluent treatment system including a flow adjusting tank, an anoxic tank, an aerobic tank, a sedimentation tank, a sludge storage tank, and a filtration disinfection tank, an immersion type ultraviolet filter for sterilizing the effluent filtered in the filtration disinfection tank and the immersion fiber filter. Integral effluent treatment system, characterized in that the disinfection device is installed. The method of claim 1, wherein the immersed fiber filter is a photocatalyst coated fiber filtration filter attached to the tubular body, the speed reducer and the speed reducer which is a power transmission device for tensioning the fiber by rotating the tubular body of the fiber filtration filter An integrated effluent treatment system comprising an inverter. The integrated effluent treatment system of claim 1, wherein the submerged fiber filter is located at an upper portion of the discharge tank flame having a height of 300 to 500 mm installed at the bottom of the filtration disinfection tank. According to claim 1, The immersion type ultraviolet disinfection device is a U-shaped tube through which the filtered effluent flows from the fiber filter and discharged through the one wall surface of the filtration disinfection tank to discharge the filtered sterilization discharge water, respectively. Integrated effluent treatment system, characterized in that connected. The integrated effluent treatment system according to claim 1, wherein the immersion type ultraviolet disinfection device is equipped with a cleaning device for maintaining the efficiency of the ultraviolet lamp. 6. The integrated effluent treatment system according to claim 5, wherein the ultraviolet lamp has a structure inserted into a quartz tube, and the cap of the O-ring structure is screwed on the upper part so as to be sealed when flooded. A method for treating effluent water, comprising using the integrated effluent treatment system according to any one of claims 1 to 6.

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