KR20080017670A - Rain recycle device using a hallow fiber-membrane - Google Patents

Abstract

A rainwater treating system using hallow fiber membranes is provided to treat and reuse rainwater while minimizing membrane fouling or membrane clogging by using a hollow fiber membrane filter in rainwater treatment, and maximize water storage efficiency by closely connecting catchment tanks with a treated water tank, thereby using the treated water tank as a reservoir during downpour. A rainwater treating system using hallow fiber membranes includes: an electric valve(101) for opening or closing an inflow of rainwater; a grit chamber(102) for removing sediment from the rainwater flown thereinto; a screen equipment(103) for removing suspended solids from the rainwater flown thereinto; a first catchment tank(104a) for storing rainwater that has passed through the grit chamber and the screen equipment; a first retention plate(105a) installed on one side face of the first catchment tank to reduce flow rate of the rainwater when rainwater flows excessively into the first catchment tank; a second catchment tank(104b) into which the rainwater flows stably through the first retention plate; a first pump(107a) installed in the second catchment tank to suck water stored in the second catchment tank; a hollow fiber membrane filter(106) for filtering the water sucked into the first pump; a suction pump(108) for sucking water filtered by the hollow fiber membrane filter; a treated water tank(109) for storing water sucked by the suction pump; and a second pump(107b) for draining treated water stored in the treated water tank. Further, a second check valve is installed at the second pump.

Description

Rain recycle device using a hallow fiber-membrane

1 is an explanatory diagram of a stormwater treatment apparatus using a hollow fiber membrane according to an embodiment of the present invention

<Explanation of symbols for main parts of drawing>

101 Electric Valve 102 Tide Tank

103 Screen Facility 104a 1st Collector

104b 2nd collecting tank 105a 1st storage plate

105b Second reservoir plate 106 hollow fiber membrane filtration device

107a first pump 107b second pump

107c 3rd Pump 108 Suction Pump

109 Treatment tank 110a 1st water gauge

110b 2nd water level meter 111 control unit

112b Second Check Valve 112c Third Check Valve

113a 1st water level 113b 2nd water level

113c 3rd level 114 Reservoir buoyancy lowering type automatic cleaning device

The present invention relates to a rainwater treatment device using a hollow fiber membrane, and more specifically, by using a hollow fiber membrane filter device capable of treating a high concentration of contaminants in the rainwater treatment, it is possible to effectively treat the initial excellent water that has been excluded because of high contamination. The present invention also relates to a rainwater treatment device using a hollow fiber membrane that can maximize the low water efficiency by using a treatment tank in a heavy rain.

In Korea, the source of water resources is rainwater, reaching an average of 12.76 billion tons annually. Of these, 54.5 billion tons evaporate and disappear, and 71.3 billion tons flow to the ground. Of these, 40 billion tons flows directly to the sea, and only 33.3 billion tons of water flows into dams, rivers and underground. Eventually, only 26% of rainwater is used, but this 26% of water eventually flows into the sea. It is only used by people during their stay on earth. Therefore, in terms of water circulation, the time the rainwater stays on the ground becomes important.

The problem of water shortage is not a distant future, and it is expected that in 2011, there will be a water shortage of 2 billion tons, about eight times the amount of Paldang dam. These measures could include the construction of dams, the recommendation of a reclaimed heavy water system, the development of alternative water resources such as groundwater development and rainwater utilization. However, these methods are enormously costly and may require more attention and development in the future for more effective stormwater treatment systems.

The conventional rainwater treatment system has a problem that the use of initial rainwater should be excluded due to membrane contamination and intercalation blockage that may occur when the initial rainwater is directly filtered due to a high concentration of initial rainwater.

In addition, in Korea, most of the rainfall has been concentrated in summer, and there have been many damages, and there was a rainwater pumping station as a countermeasure. However, there is no pollutant treatment function. There was a problem that can not control the spread of pollution.

Therefore, the present invention has been made to solve the above problems, an object of the present invention is to treat the rain water while minimizing the membrane contamination and intercalation blockage that can occur when directly filtering the initial excellent high pollution concentration. Considering that the rainfall type in Korea is a heavy rain, the catchment tank and the treatment tank are linked to each other. To provide a device.

In order to achieve the object of the present invention, the stormwater treatment apparatus according to the present invention,

Electric valve to open and close the inflow of rainwater; Sedimentation tank for removing the precipitate of the rainwater introduced; A screen facility for removing the suspended suspended matter; A first collecting tank for storing rainwater that has passed through the settling tank and the screen facility; A first reservoir plate installed on one side of the first water collecting tank to reduce the flow rate of rainwater upon excessive inflow of rainwater; A second collecting tank in which rainwater is stably introduced and stored through the first storage plate; A first pump installed in the second water collecting tank and sucking the stored water stored in the second water collecting tank; A hollow fiber membrane filtration device for filtering the stored water sucked into the first pump; A suction pump for sucking the stored water filtered by the hollow fiber membrane filter device; A treatment tank for storing the stored water sucked by the suction pump; And a second pump for draining the treated water stored in the treated water tank.

In addition, the second pump; a second check valve for preventing material penetration other than rainwater; characterized in that formed.

In addition, the treatment tank is characterized in that to receive and store rainwater directly from the second collection tank during the heavy rain.

In addition, the third pump for discharging the stored water stored in the treatment tank; characterized in that it further comprises.

In addition, the third pump; a third check valve to prevent material penetration other than rainwater; is characterized in that the formed.

In addition, it is formed between the second collection tank and the treatment tank, the second reservoir plate for inducing a constant flow of the storage water; characterized in that is formed.

The apparatus may further include a first water level sensor for sensing the water level of the first water tank and the second water tank, and a second water level sensor for sensing the water level of the treated water tank.

In addition, the control system for controlling the first, second, third pump and the electric valve; characterized in that it further comprises.

In addition, the storage tank buoyancy lowering type automatic cleaning device is installed inside the treatment tank for cleaning the wall surface of the treatment tank; characterized in that it further comprises.

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

Figure 1 shows the structure of the storm water treatment apparatus using the aerial desert according to the present invention. Rainwater treatment apparatus using the air desert according to the present invention is a sedimentation tank 102, screen facility 103, the first collection tank 104a, the second collection tank 104b, the treatment tank 109, hollow fiber membrane filtration device 106 ), The control unit 111.

The sedimentation tank 102 is a place where rainwater collected from a roof surface or a water repellent impermeable layer (packing surface) is introduced first. The inflow of rainwater into the sedimentation tank 102 consists of the opening of the electric valve 101 under the control of the control unit 111. Rainwater introduced into the sedimentation tank 102 contains a number of suspended substances due to the non-point source containing all sources other than the point source and the point source continuously discharged from a certain point. Such suspension material may accumulate in the first collecting tank 104a to generate sludge or damage to the first pump 107a installed in the first collecting tank 104a. In order to solve this problem, the sedimentation tank 102 forms a space at the bottom to remove deposits such as sand or soil.

The screen facility 103 is installed on one side of the sedimentation tank 102, and is made of a net shape or a shape such as to remove floating materials that are not removed from the sedimentation tank 102, and is not easily corroded. It is good to use.

The first collection tank 104a is stored in the rainwater from the suspended material is passed through the immersion tank 102 and the screen facility 103 is removed. The rainwater flowing into the first water collecting tank 104a falls at a high position and thus generates turbulence when collected in the first water collecting tank 104a, thereby failing to remove the sedimentation tank 102 and the screen facility 103. Small particles are stored together and clouded in the first sump 104a. These small particles form an inclined surface in the first collection tank 104a so as to settle by preventing turbulence.

As shown in FIG. 1, the inflow of rainwater is controlled in three stages, and the rainwater flows up to the second water level 113b in normal times.

The rainwater stored in the first water collecting tank 104a is stored in the second water collecting tank 104b. Inflow of rainwater into the second sump (104b) is the first reservoir formed between the third water level (113a) and the second water level (113b) at the upper end between the first and second collection tank (104a) (104b) It flows in through plate 105a.

The first reservoir plate 105a is divided by the surface load rate (inflow flow rate divided by the bottom area where the flow rate is introduced) in order to increase the settling rate of the small particles (slow settling speed particles) included in the first collection tank 104a. Increase the precipitation rate by lowering the) and allowing the rainwater to flow stably.

The first water level meter 110a connected to the control unit 111 is installed inside the second water tank 104b, and the storage water of the second water tank 104b is up to the second water level 113b. When stored, the control unit 111 connected to the first water gauge 110a locks the electric valve 101 to block the inflow of rainwater.

The hollow fiber membrane filtration device 106 is a filter made by entangled a bundle of thin hollow fibers with a hollow of 0.01 μm (1 / 1,000 of a hair thickness) as a thread and is called ULTRA FILTRATION. When the hollow fiber membrane method is used, the amount of purified water is higher than that of other membrane filtration methods such as reverse osmosis method, and it does not need a separate water tank, and it has the advantage of preserving a large portion of minerals in water. The hollow fiber membrane filtration device 106 has been used in the present invention because of the above-described advantages, and the first pump 107a filters the storage water introduced from the second collection tank 104b.

The treated water tank 109 is stored in the storage water filtered by the hollow fiber membrane filter device 106, which is mounted on one side of the hollow fiber membrane filter device 106 to the suction pump 108 to suck the filtered storage water Store filtered water inflow. The treated water stored in the treated water tank 109 may be utilized as landscape water through the second pump 107b installed in the treated water tank 109 as purified water filtered by the hollow fiber membrane filter 106. Meanwhile, a second check valve 112b capable of preventing backflow may be selectively installed in the second pump 107b, and the second check valve 112b may be installed to introduce foreign substances into the treatment tank 109. Can be prevented.

Rainwater treatment method as described above is to be used in places that can not be used without purifying rainwater. However, this is not the case during dry storms or heavy rains.

In the case of water-repelling, after discharging the treatment water in the treatment tank 109 after contacting the Disaster Prevention Agency, it is made through the third pump 107c installed in the treatment tank 109. A third check valve 112a capable of preventing backflow may be selectively installed in the third pump 107c.

In the case of heavy rain, the treatment tank 109 is also used as a reservoir to prevent disaster due to heavy rain. Rainwater flows up to the first water level 113c and flows up to the treated water tank 109 without being filtered through the hollow fiber membrane filter 106. On the other hand, rainwater starts storage while the second reservoir plate 105b formed between the second collection tank 104b and the treatment tank 109 reduces the flow rate and the inclined surface formed in the treatment tank 109 prevents turbulence. do.

When the second water level 113b for detecting the water level installed in the treatment tank 109 is connected to the control unit 111 to become the first water level 113c, the control unit 111 locks the electric valve 101. . The stored water stored in the treatment tank 109 may be discharged by using the third pump 107c when the heavy rain passes, and prevents foreign matter from the outside due to backflow through the third pump 107c. In order to do this, a third check valve 112a may be formed.

The reservoir buoyancy drop type automatic cleaning device 113 may clean the treated water tank 109 at the same time as the discharge or reuse of the treated water stored in the treated water tank 109.

In the present invention has been described with reference to the preferred embodiment as described above. Although specific terms have been used herein, they are used only for the purpose of describing the present invention and are not intended to limit the scope of the present invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

As described above, the present invention enables the pre-storage post-treatment separately from the sump tank and the treatment tank, and utilizes the purified rainwater as landscaping water, etc. By using the municipal treatment tank as a reservoir, rainfall runoff can be reduced to prevent flood damage.

In addition, by using hollow fiber membrane filtration as rainwater treatment device, the facility is simple, and it removes fine pollutants and bacteria such as E. coli in rainwater due to air pollution and contamination of catchment surface. We aim at efficiency.

(Hollow fiber membrane efficiency: BOD98%, COD86%, SS98%, TN66%, TP80%, E. coli 100% removal)

Claims (9)

Electric valve to open and close the inflow of rainwater; Sedimentation tank for removing the precipitate of the rainwater introduced; A screen facility for removing the suspended suspended matter; A first collecting tank for storing rainwater that has passed through the settling tank and the screen facility; A first reservoir plate installed on one side of the first water collecting tank to reduce the flow rate of rainwater upon excessive inflow of rainwater; A second collecting tank in which rainwater is stably introduced and stored through the first storage plate; A first pump installed in the second water collecting tank and sucking the stored water stored in the second water collecting tank; A hollow fiber membrane filtration device for filtering the stored water sucked into the first pump; A suction pump for sucking the stored water filtered by the hollow fiber membrane filter device; A treatment tank for storing the stored water sucked by the suction pump; Rainwater treatment device using a hollow fiber membrane, comprising; a second pump for draining the treated water stored in the treatment tank According to claim 1, Rainwater treatment device using a hollow fiber membrane, characterized in that the second pump; second check valve for preventing the penetration of substances other than rainwater According to claim 1, The treatment tank is a rainwater treatment apparatus using a hollow fiber membrane, characterized in that for receiving heavy rain directly receives the rain from the second collection tank According to claim 1, Rainwater treatment device using a hollow fiber membrane, characterized in that it further comprises; a third pump for discharging the stored water stored in the treatment tank The method according to claim 4, Rainwater treatment device using a hollow fiber membrane, characterized in that the third pump; third check valve for preventing material penetration other than rainwater is formed in the third pump According to claim 1, Rainwater treatment device using a hollow fiber membrane, characterized in that; formed between the second collection tank and the treatment tank, the second reservoir plate for inducing a constant flow of stored water; According to claim 1, Rainwater treatment apparatus using a hollow fiber membrane further comprises a first water level sensor for detecting the water level of the first and second water collection tank; and a second water level sensor for detecting the water level of the treated water tank. According to claim 1, Rainwater treatment device using a hollow fiber membrane, characterized in that it further comprises a; control system for controlling the first, second, third pump and the electric valve According to claim 1, Rainwater treatment device using a hollow fiber membrane, characterized in that it further comprises; a storage tank buoyancy lowering type automatic cleaning device installed inside the treatment tank to clean the wall surface of the treatment tank;

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