KR101080983B1 - Apparatus for Treating Wastewater Effluent and Wastewater Effluent Treatment Method Using Thereof - Google Patents

Abstract

The present invention relates to a effluent treatment apparatus and a effluent treatment method using the same, and more particularly, a fiber filter equipped with a rotary fiber filtration filter to efficiently remove suspended matter and turbidity contained in a sewage treatment plant or a filtration water tank. The present invention relates to a effluent treatment apparatus used and a effluent treatment method using the same.

The effluent treatment apparatus according to the present invention does not use a fine screen, a sedimentation tank, a concentration facility, and an auxiliary facility used for various wastewater and sewage treatment facilities. It can be installed in a narrow space, and is composed of a rotary fiber filtration filter to continuously clean the contaminated filtration filter has the effect of improving the removal efficiency of foreign substances such as suspended matter.

Filtration, Sewage Treatment Plant, Effluents, Floating Substances, Turbidity Substances

Description

Effluent Treatment System and Effluent Treatment Method Using It {Apparatus for Treating Wastewater Effluent and Wastewater Effluent Treatment Method Using Thereof}

The present invention relates to a effluent treatment apparatus and a effluent treatment method using the same, and more particularly, a fiber filter equipped with a rotary fiber filtration filter to efficiently remove suspended matter and turbidity contained in a sewage treatment plant or a filtration water tank. The present invention relates to a effluent treatment apparatus used and a effluent treatment method using the same.

Effluents from sewage treatment plants are not suitable for reuse as they are due to E. coli, odor, turbidity and color. As of the end of 2001, the secondary treated water discharged from 184 sewage treatment plants in Korea is about 20 million tons per day, and a huge amount is discharged into rivers. However, the annual reuse of treated water is about 17.7 billion tons, with only 2.4% reuse rate. Increasing the annual reuse rate of such treated water by 5% would result in securing a dam of about 600 million tons of effective capacity. Considering this situation, reuse of secondary treated water in sewage treatment plants is essential and an alternative to overcome water shortages.

Secondary treatment water reuse of sewage treatment plant is different from heavy water that recycles used tap water into domestic water or industrial water, so it can be easily reused after treating the discharged water treated and discharged in existing sewage treatment facilities for reuse. The advantage is that you get water. Therefore, it is important to establish and implement a plan for reusing recycled water according to regional characteristics in the case of new sewage treatment plant.

Water reuse can be used as washing water, sprinkling water, landscaping water, river maintenance water, agricultural water and cooling water. The reuse of secondary treated water differs in treatment standards according to the use. For example, when used as water for drinking or landscaping, no color treatment is required, whereas for washing water, the chromaticity should not exceed 20 degrees. Coagulation precipitation, fenton oxidation, ozone treatment, activated carbon adsorption, and UV / H ₂ O ₂ oxidation are widely used for color treatment. In the case of disinfecting raw water by chlorine treatment, disinfection by-products such as trihalomethane (THM) are generated, which contaminates the water source. Therefore, even chlorine disinfection devices installed in sewage treatment plants are not used.

On the other hand, technologies such as activated carbon, R / 0 (reverse osmosis) and membranes have been commercialized due to high processing efficiency, but are economically poor due to high maintenance and installation costs. As a method that can simultaneously handle color sterilization and ozone, ozone and UV / H ₂ O ₂ oxidation method is used. UV / H ₂ O ₂ oxidation method does not generate disinfection by-products, and it is inexpensive to install. UV is recommended for disinfection of primary treatment water, so it is expected to be used in the future.

However, the conventional UV contactor has a structure that increases the number of lamps in order to increase the efficiency with hydrogen peroxide. For example, in order to increase the treatment efficiency, a plurality of UV lamps are provided in one contact bath. The method of using and connecting a plurality of contact tanks in series are typical, and these devices have the disadvantage of high facility cost and power cost.

On the other hand, in the western United States, where many cases of sewage treatment plant effluents are reused, the filtration process is performed by flocculation, sedimentation, or sand filtration to remove turbidity and suspension of effluents and to enhance disinfection and oxidation. Many methods have been applied.

However, in the case of flocculation, there is a disadvantage in that additional sludge occurs, and in case of sand filtration, it is difficult to cope with clogging due to suspended matter in seasonally treated water. In particular, in the domestic treatment plant, there is a problem that the occlusion of the sand filtration device due to scum, fine floc, algae growth easily occurs in a situation where a skilled man is lacking.

Accordingly, the present inventors have made efforts to improve the problems of the prior art, by installing the inlet pipe in the sewage treatment plant or filtered water tank, and introduced the water of the sewage treatment plant or filtered water tank into the fiber filter using the water pump installed in the inlet pipe. Next, as a result of removing the organic matters such as turbidity and suspended matters contained in the effluent water of the sewage treatment plant by using the rotary fiber filtration filter which can be washed continuously, the structure of the device is simple due to the high removal efficiency of the organic matter. It was confirmed that the present invention can be completed.

An object of the present invention is to provide a effluent treatment apparatus and a effluent treatment method using the same, which is easy to install even in a narrow place, which can improve the removal efficiency of suspended matter and turbidity substances contained in the effluent.

In order to achieve the above object, the present invention is an inlet pipe (2) is provided with an underwater pump (P1) for introducing the discharge water (W) containing the organic matter of the sewage treatment plant into the device; A fiber filter (4) having a fiber filtration filter (3) for filtering the discharge water introduced by the submersible pump (P1) of the inlet pipe (2); Returned to the sewage treatment plant, which is connected to the fiber filter 4 and discharges a part of the effluent before passing through the fiber filter 3 together with the organic matter attached to the fiber filter 3 and the sediment in the fiber filter 4. A return pipe 5 provided with a pump P2 and a return valve V1; A discharge pipe (6) having a discharge pump (P3) and a discharge valve (V2) for discharging the discharged water filtered from the fiber filter (4); And a control unit 7 for controlling the operation of the submersible pump P1, the fiber filter 4, the return pump P2, and the discharge pump P3.

The present invention also provides a method for treating effluent water, wherein the effluent water treatment device is used to remove suspended substances and turbidity substances contained in sewage treatment plants or filtered water tanks.

The effluent treatment apparatus according to the present invention does not use a fine screen, a sedimentation tank, a concentration facility, and an auxiliary facility used for various wastewater and sewage treatment facilities. It can be installed in a narrow space, and is composed of a rotary fiber filtration filter to continuously clean the contaminated filtration filter has the effect of improving the removal efficiency of foreign substances such as suspended matter.

The present invention in one aspect, the inlet pipe (2) is provided with an underwater pump (P1) for introducing the discharge water (W) containing the organic matter of the sewage treatment plant into the device; A fiber filter (4) having a fiber filtration filter (3) for filtering the discharge water introduced by the submersible pump (P1) of the inlet pipe (2); Returned to the sewage treatment plant, which is connected to the fiber filter 4 and discharges a part of the effluent before passing through the fiber filter 3 together with the organic matter attached to the fiber filter 3 and the sediment in the fiber filter 4. A return pipe 5 provided with a pump P2 and a return valve V1; A discharge pipe (6) having a discharge pump (P3) and a discharge valve (V2) for discharging the discharged water filtered from the fiber filter (4); And a control unit 7 controlling the operation of the submersible pump P1, the fiber filter 4, the return pump P2, and the discharge pump P3.

Specifically, the effluent treatment apparatus of the present invention is provided with an inlet pipe in the sewage treatment plant or filtered water tank, and the water of the sewage treatment plant or filtered water tank is introduced into the device by using an underwater pump installed in the inlet pipe, and then the fine fiber filtration filter is By filtering and removing the turbidity and suspended matters contained in the effluent of the sewage treatment plant using the equipped fiber filter, the structure of the device can be simplified due to the high efficiency of removing the suspended matters. It is possible to remove at a time in one model without distinguishing the fine solid, it is composed of a rotating fiber filtration filter to continuously clean the contaminated filtration filter can improve the removal efficiency of foreign substances such as suspended matter.

In another aspect, the present invention relates to a method for treating effluent water, which comprises removing suspended substances and turbidity substances contained in sewage treatment plants or filtered water tanks using the effluent treatment apparatus.

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

1, 2 and 3, the effluent treatment apparatus according to the present invention is an inlet pipe (2) having an underwater pump (P1) for introducing the effluent (W) of the sewage treatment plant into the device, the inflow A fiber filter 4 having a fiber filter 3 for filtering the effluent introduced by the submersible pump P1 of the pipe 2 and a fiber filter 4 connected to the fiber filter 4 to flow into the fiber filter 4. Return pipe (5) equipped with a return pump (P2) and a return valve (V1) for discharging part of the discharged water to the sewage treatment plant, a discharge pump (P3) for discharging the discharge water filtered from the fiber filter (4) and discharge The discharge pipe 6 is provided with a valve (V2) and the control unit 7 for controlling the operation of the submersible pump (P1), the fiber filter (4), the return pump (P2) and the discharge pump (P3).

In the present invention, the effluent (W) refers to water that is confined in a sewage treatment plant or a filtered water tank, such as to open or spill such water, such as suspended matter, turbidity, sediment, etc. Contains various organics. Therefore, in the present invention, the inlet pipe 2 is installed in the sewage treatment plant or the filtered water tank, and the organic matter contained in the effluent water is efficiently filtered by flowing into the effluent treatment apparatus using the water pump P1.

Submersible pump (P1) according to the present invention is mounted at regular intervals from the sewage treatment plant floor to protect the fiber filter from sediment deposited on the sewage treatment plant floor. The height of the submersible pump is preferably located at about the middle height of the effluent of the sewage treatment plant, but can be appropriately adjusted according to the amount of sedimentation material and the effluent water level of the sewage treatment plant.

 In the present invention, the fiber filter 4 is a effluent storage tank 11 having a predetermined accommodation space, a fiber filtration filter 3 accommodated in the effluent storage tank 11, one side of the fiber filtration filter 3 A plurality of through-holes (U) are formed on the outer circumferential surface of the power transmission unit (12), which is a power transmission device for tensioning the fiber filtration filter (3) by reversible rotation, and the discharged water filtered from the fiber filtration filter (3). Filtration pipe 15 may be included.

In the present invention, the effluent storage tank 11 is a space for storing the effluent containing the organic matter so that the filtrate filter can filter the organic matter, such as suspended matter, turbidity, and the like contained in the effluent, for preventing corrosion It may be made of a material such as stainless steel.

The fiber filter 4 according to the present invention receives power from the power transmission unit 12 and rotates one end of the fiber filter 3 so that the fiber filter 3 is twisted and twisted. 3) seals the inside of the discharge water storage tank 11 to physically filter out suspended substances and turbidity substances contained in the discharge water.

More specifically, the fiber filter 4, the fiber filter 4 receives the power of the power transmission unit 12 to rotate the one end of the fiber filter 3 to twist to physically filter the organic matter. In addition, the treated water filtered from the fiber filtration filter 3 is discharged to the discharge pipe 6 through the plurality of through-holes U of the filtration pipe 15 so that it can be reused as water suitable for the discharge standard.

In the present invention, the power transmission unit 12 is installed in the discharge water storage tank 11, the actuator 17 for generating power, the coupling 18 for rotatably connecting the rotating shaft to the actuator, Rotating plate which is rotatably connected to the coupling and installed to engage with a rotating shaft 15 for rotating the rotating plate 13 and a bearing (not shown) mounted at one end of the rotating shaft 15 to rotate in the direction of the fire shaft. 13, the actuator 17 is rotatably connected to the rotary shaft 15 by a coupling 18, and a bearing (not shown) is rotated on one side end of the rotary shaft 15. And the rotary shaft 15 is reversibly rotated simultaneously in the same direction as the rotary shaft, when the rotary shaft 15 is powered by the actuator 17 and reversibly rotated. Therefore, as shown in Figure 2, the fiber filtration filter 3, one end of which is connected to the rotating plate 13 by the connecting ring 19 is also twisted while rotating in accordance with the rotation direction of the rotary shaft.

In the present invention, as shown in Figure 4, the fiber filtration filter 3 increases the filtering effect of organic matter, such as suspended matter and suspended matter in a state where a large number of fine fibers having a thickness of 4 ~ 5㎛ overlap. In addition, in the present invention, the fiber of the fiber filtration filter 3 may be coated with a photocatalyst to prevent foreign matter from sticking.

In the present invention, the fiber filtration filter 3 is connected to both ends of the fiber filtration filter, respectively, by a connecting ring, one side is fastened to the rotary plate 13, the other side is fastened to the fixed plate 20, the power from the actuator 17 When receiving the, the rotating plate (13) connected to the rotating shaft (15) is reversibly rotated to strain the fibers of the fiber filtration filter to twist and filter the organic matter in the effluent water, and the filtered effluent is filtered located in the fiber filtration filter It is discharged through the through hole U of the pipe 14.

The fiber filtration filter 3 rotates the twisted fiber filtration filter in the opposite direction during filtration to release the twisted fiber filtration filter, and then repeatedly removes the contaminants attached to the fiber filtration filter through reversible rotation. Can be.

Filtration pipe 14 according to the present invention serves to infiltrate the discharge pipe 6 through the plurality of through-holes (U) formed on the outer circumferential surface of the effluent filtered by the fiber filtration filter (3), fiber filtration The filter (3) is wrapped around the periphery, the outer peripheral surface of the filtration pipe 14 has a plurality of protective rings 16 are fitted at predetermined intervals, the fiber filtration filter that can occur during the process of filtering the organic matter Can prevent damage.

In the present invention, the return pipe (5) is provided with a return pump (P2) and a return valve (V1), is connected to the fiber filter (4) is a part of the discharge water flowing into the fiber filter (4) to the sewage treatment plant again It is a pipe to discharge. The return pipe 5 discharges the suspended solids attached to the fiber filter and the organic matter precipitated inside the fiber filter to the sewage treatment plant, thereby delaying the contamination of the fiber filter.

In the present invention, when the fiber filtration filter 3 is washed, the water pump P1 is operated, and the return valve V1 is completely opened while the discharge pump P3 and the valve V2 of the discharge pipe are locked. The effluent of the sewage treatment plant can be used to wash the fiber filtration filter 3.

The discharge pipe 6 according to the present invention is a pipe for discharging the discharge water filtered from the above-described fiber filtration filter through the discharge pump P3 and the discharge valve V2, and checks the pressure of the fiber filtration filter or checks the capacity of the discharge water. Meters such as pressure gauges, flow meters, etc. may be additionally attached for adjustment.

The control unit 7 according to the present invention is electrically connected to the driving means of the operation of the submersible pump (P1), the fiber filter (4), the return pump (P2) and the discharge pump (P3), respectively, the flow rate of the effluent treatment apparatus, The pressure, the degree of rotation of the fiber filtration filter, and the effluent treatment time can be controlled by the operation of the submersible pump, the fiber filter, the return pump, and the discharge pump, respectively.

On the other hand, the effluent treatment apparatus according to the present invention may be additionally provided with an air injection pipe for supplying high-pressure air to the lower portion of the fiber filter to wash the fiber filtration filter or suspended matters, a plurality of pipes of the effluent treatment apparatus Valves can be fitted to control the flow rate of the effluent.

In the method for treating effluent according to the present invention, the effluent from the sewage treatment plant is introduced, and the organic matter contained in the effluent is filtered using a fiber filtration filter in a fiber filter to discharge the effluent filtered by the organic matter, and the fibers in the filtration process. As the organic matter attached to the filtration filter is continuously washed in a simple manner, it is possible to improve the removal efficiency of foreign substances such as suspended matter.

Hereinafter, the present invention will be described in more detail with reference to the following examples. In conclusion, these examples are only for illustrating the present invention in more detail, it is obvious to those skilled in the art that the scope of the present invention is not limited by these examples in accordance with the gist of the present invention. something to do.

Example  1: Measurement of treatment efficiency of effluent treatment device

1-1 Operating Conditions of Effluent Treatment System

The treated water was targeted to the Yeongwol sewage treatment facility, and the effluent treatment device introduced the treated water into the fiber filter using an underwater pump (Hanil PV-D230, Korea) as shown in FIG. 1 and into the fiber filter. 10% of the treated water was discharged back to the sewage treatment plant and 90% was filtered out. The capacity of the water to be treated in the effluent treatment apparatus was set to 2 ton / hr.

1-2 of effluent treatment unit Filtration  Measure

In the same manner as in Example 1-1, the filtration efficiency of the effluent treatment apparatus was tested twice for the influent water, the suspended solids (SS) of the filtered water, and the water quality items of the BOD, and the results are shown in Table 1 below. . The inflow water refers to the water to be treated before flowing into the effluent treatment apparatus, and the filtered water refers to the effluent treated and discharged by the effluent treatment apparatus.

As a result, as shown in Table 1, SS showed an average of 61.8%, 68.8 %%, respectively, and BOD showed an average of 79.6% and 84.1%, respectively.

Sample Item Influent Filtered water Average throughput rate (%) Effluent 1 SS (mg / L) 13.6 5.2 61.8 BOD (mg / L) 40.2 8.2 79.6 Effluent 2 SS (mg / L) 20.8 6.5 68.8 BOD (mg / L) 59.8 9.5 84.1

The specific parts of the present invention have been described in detail above, and it is 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. something to do. Thus, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

1 schematically shows an effluent treatment apparatus installed in a sewage treatment plant according to the present invention.

Figure 2 schematically shows the effluent treatment apparatus according to the present invention.

3 is a photograph of the effluent treatment apparatus according to the present invention.

Figure 4 is a photograph of the fiber filtration filter of the effluent treatment apparatus according to the present invention.

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

2: inlet pipe 3: fiber filtration filter

4: fiber filter 5: return piping

6: discharge piping 7: control unit

11: effluent storage tank 12: power train

13: rotating plate 14: filtration piping

15: rotating shaft 16: protective ring

17: Actuator 18: Coupling

19: linkage 20: fixing plate

P1: Submersible Pump P2: Return Pump

P3: discharge pump V1: return valve

V2: discharge valve W: discharge water

U: through hole

Claims (7)

Effluent treatment unit, including: An inlet pipe (2) having an underwater pump (P1) for introducing the discharged water (W) containing the organic matter of the sewage treatment plant into the apparatus; A discharge water storage tank 11 having a predetermined accommodation space for storing the discharge water introduced by the submersible pump P1 of the inflow pipe 2; Is provided on one side of the discharge water storage tank 11, the actuator 17 for generating power and the rotating shaft 15 is rotatably connected to the actuator 17 is rotated by the actuator 17 is provided A power transmission unit 12; A fixing plate 15 fixed to one side of the inner circumferential surface of the storage tank 11 and having a through hole formed at a central portion thereof to allow the rotating shaft 15 to pass through the power transmission unit through the through hole; A rotating plate 16 which is fastened to the rotating shaft 15 penetrating the fixing plate 15 and reversibly rotates by the rotation of the rotating shaft; Both sides of the fixing plate 15 and the rotating plate 16 are fastened to each other so that only one side of the fiber filtration filter is reversibly rotated by the power transmission unit 12; And a fiber filter (4) including a filtration pipe (14) having a plurality of through-holes formed therein and a protective ring (16) fitted at an interval on the outer circumferential surface to protect the fiber filtration filter (3). Returned to the sewage treatment plant, which is connected to the fiber filter 4 and discharges a part of the effluent before passing through the fiber filter 3 together with the organic matter attached to the fiber filter 3 and the sediment in the fiber filter 4. A return pipe 5 provided with a pump P2 and a return valve V1; A discharge pipe (6) having a discharge pump (P3) and a discharge valve (V2) for discharging the discharged water filtered from the fiber filter (4); And Control unit (7) for controlling the operation of the submersible pump (P1), fiber filter (4), return pump (P2) and discharge pump (P3). delete delete The effluent treatment apparatus according to claim 1, wherein the fiber filtration filter (3) is a fiber filtration filter coated with a photocatalyst. The effluent treatment apparatus according to claim 1, wherein the control unit (7) controls the return pump (P2) to discharge 10% of the effluent flowing into the fiber filter (4) back to the sewage treatment plant. The effluent treatment apparatus according to claim 1, wherein the fiber filter (4) is further provided with an air inlet pipe for supplying high-pressure air to wash the fiber filter (3) or to float the precipitate. A method for treating effluent water, wherein the effluent and turbidity substances contained in the sewage treatment plant or the filtered water tank are removed using the effluent treatment device of claim 1.

Images