KR20020072764A - Sewage treatment method and apparatus - Google Patents

Abstract

PURPOSE: A sewage treatment method and apparatus therefor is provided, which uses single driving part for primary screens and secondary screen, filter coarse impurities by a primary coarse screen and fine impurities by secondary fine screen, so that can filter with low power consumption with maximized treatment efficiency, the filtrate being transferred directly to solid/liquid separator. CONSTITUTION: The sewage treatment method comprises the steps of introducing sewage and wastewater to a coarse screen(3) by a driving part, dewatering the filtrate to a first flow storage tank(7), filtering impurities and discharging through a discharge drum(5) and a screw press(6); feeding the filtrate stored at the first storage tank(7) to a fine screen(4) by the driving part, secondarily dewatering the filtrate to a second flow storage tank(22), and transferring the filtrate through a filtrate discharge line(23) for solid/liquid separation; and filtering the impurities and discharging through the discharge drum(5) and the screw press(6).

Description

Sewage and wastewater pretreatment method and apparatus

The present invention relates to a sewage and wastewater pretreatment method and apparatus for separating, dehydrating and discharging the filtrate, sewage, seeds and the like from sewage and wastewater containing sewage, sewage and contaminants, residues, seeds and the like.

More specifically, the present invention relates to a pretreatment method and apparatus for separating and dewatering filtrates of sewage, contaminants, seeds, etc. in sewage and wastewater from the beginning to the first and second stages in which sewage and wastewater are introduced through an inflow pipe. The purpose of the present invention is to provide a method and a device having an extremely economical effect by reducing the size, reducing power, and improving processing efficiency by rotating a screen having a single driving unit on one side of the car screen.

Conventional sewage and wastewater pretreatment apparatus and method is shown in Figure 1 when the debris, contaminants, seeds contained in the sewage and wastewater, etc. are introduced to the inflow channel 100 is caught on the screen 108 and the drive motor 109 As the rake 107 is rotated, the waste is collected in the waste box 101 to be discharged out, and sewage and waste water are separated to form a rough wood screen, and small waste in the sewage and waste water discharged by the inflow channel 102. And the congestion logistics are collected and discharged in the waste box 103 by the rake 104 connected to the drive motor 110 and the sewage and waste water 111 is configured to flow out to the next process,

This is because the installation step of the device is quite cumbersome and the wastes are discarded, causing a second environmental pollution, the installation cost is expensive, and the operation operation is inconvenient.

In addition, the conventional sewage and wastewater pretreatment apparatus has had a number of improvements, such as taking up a lot of wasteful waste and installation area without being filtered out cleanly even if the treatment is carried out in the secondary.

Accordingly, the present invention is to provide a sewage and wastewater pretreatment apparatus and method that can eliminate the problems of the conventional sewage and wastewater pretreatment apparatus and method as described above,

In the present invention, after the inflow of sewage and waste water through the inlet, and through the first and second screens of coarse and fine wood driven simultaneously by a single drive unit, various impurities contained in the sewage and waste water, dregs, seeds and the like 1, The present invention has been completed with the technical problem of the present invention to provide a pretreatment apparatus and method for sewage and wastewater that can be filtered and discharged in two stages.

1 is a side view schematically showing a conventional sewage and wastewater pretreatment apparatus

Figure 2 is a perspective view showing the overall configuration of the pretreatment apparatus of the present invention

Figure 3 is a plan view showing the overall configuration of the pretreatment apparatus of the present invention

Figure 4 is a front view of a part fractured state showing the overall configuration of the pretreatment apparatus of the present invention

Figure 5 is a side view showing the overall configuration of the pretreatment apparatus of the present invention

6 is a cross-sectional view taken along line A-A of the present invention.

7 is a cross-sectional view taken along line B-B of the present invention.

8 is a block diagram for explaining the sewage and wastewater pretreatment method of the present invention.

■ Explanation of symbols used in main part of drawing ■

1: gas 2: driving part

3: primary screen 4: secondary screen

5: exhaust drum 6: screw press

6a: drive motor 7: first flow reservoir

8: drive motor 9: drive shaft

10: chain plaque 11: shaft

12: chain plaque 13: chain

14: Bearing Housing 15: Support Bearing

16: Inlet 16a: flange

17: discharge screw 18: brush

19: pump motor 20: pump

21: Transfer pipe 22: Second flow reservoir

23: filtrate outlet 24: bypass pipe

Figure 2 is a perspective view showing a sewage and waste water (hereinafter referred to as "sewage") pretreatment apparatus provided by the present invention, Figures 3 to 5 are a plan view, a front view, a side view and the like showing the overall configuration of the present invention, these Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The sewage and wastewater pretreatment apparatus provided by the present invention coaxially installs the primary and secondary screens 3 and 4 which are rotatably connected to the driving unit 2 on the inner upper portion of the gas 1 and rotated. Screws installed in the lower part through the discharge drum (5) are separated from the sewage, etc. introduced into the primary screen (3) by connecting the discharge drum (5) to the middle of the primary and secondary screens (3,4). The filtrate is transported through the press 6 and the filtrate dewatered from the primary screen 3 is collected in the first flow storage tank 7 and then introduced into the secondary screen 4 to discharge fine debris, etc. Through the drum (5) and also to the screw press (6) to be able to effectively separate the various contaminants, debris, seeds contained in the sewage from the filtrate in the first and second stages, more specifically Let's look at it.

That is, the driving motor 8 is installed at one side driving part 2 of the base 1 constituting the pretreatment device, and the chain sprocket 10 is axially fixed on the driving shaft 9 so that the primary and secondary screens 3, 4) is connected to drive the chain sprocket 12 and the chain 13 fixed to the shaft 11 of the cylindrical tube type shaft is installed,

The shaft 11 which shaft-mounts the primary and secondary screens 3 and 4 is rotatably rotated by bearing housings 14 and support bearings 15 on the body 1 at the left and right ends of the body 1. Supported.

One end of the shaft 11, that is, the side on which the primary screen 3 is installed, forms a flange 16a to form an inlet 16 formed of an inlet pipe through which sewage and wastewater can be introduced.

The primary and secondary screens 3 and 4 are horizontally connected to communicate with the shaft 11, and the inner diameters of the primary and secondary screens 3 and 4 are located in the middle of the primary and secondary screens 3 and 4. The discharge drum 5 having a smaller dimension is integrally connected.

The 1st and 2nd screens (3, 4) are composed of crude wood and fine detail, respectively, so that various contaminants, debris, seeds, etc. contained in sewage and wastewater can be separated from the filtrate with the first and second. Discharge screws 17 for conveying the collected contaminants and the like onto the discharge drum 5 are formed at the inner edges of the primary and secondary screens 3 and 4, respectively.

In addition, one side of the primary and secondary screens 3 and 4 is provided with a brush 18 for cleaning and cleaning various foreign substances on the outer edges of the primary and secondary screens 3 and 4, respectively.

The debris and the like separated from the primary and secondary screens 3 and 4 are discharged onto the screw press 6 installed at right angles to the lower portion thereof through the discharge drum 5 and rotated by the drive motor 6a. It can be compressed by the next transfer process.

The filtrate dewatered from the primary screen (3) is dropped onto the first flow reservoir (7) formed in the lower portion and the secondary liquid through the feed pipe (21) by the pump (20) driven by the pump motor (19) It is configured to be transferred to the screen (4) side.

In addition, a second flow rate storage tank 22 in which the dehydrated filtrate is stored is installed at the lower portion of the secondary screen 4 so that the filtrate in which the contaminants are separated through the first and second screens 3 and 4 is collected. A filtrate outlet 23 is formed so that it can be transferred to a known solid-liquid separation process.

Meanwhile, a bypass pipe 24 is installed between the discharge drum 5 and the second flow storage tank 22 so that the overflowed filtrate can be bypassed onto the second flow storage tank 22. It is.

In the drawings, reference numeral 25 denotes an inspection window and 26 denotes a brush fixture.

The process of the present invention for pretreatment of various contaminants, debris, seeds, etc. contained in the sewage using the sewage and wastewater pretreatment device configured as described above will be described in detail below simultaneously with the operation of the apparatus.

The sewage and wastewater pretreatment apparatus provided by the present invention is first of the primary and secondary screens (3, 4) that can be installed in the upper side of the sewage and the first side (3, 4) that can be rotated in connection with the drive unit (2) It is first put into the car screen 3.

That is, the sewage introduced through the inlet 16 of the primary screen 3 is filtered through the inside of the primary screen 3 made of crude wood, and the filtrate is dehydrated and dropped into the first flow storage tank 7 at the bottom. And, the filtered contaminants, etc. are transported by the discharge screw 17 to the discharge drum (5) and transferred to the lower screw press (6), and then separately collected through a conveyor or the like by the driving thereof, the 1 The filtrate dewatered from the car screen 3 is driven by the drive unit 2 through the feed pipe 21 by the pump 20 driven by the pump motor 19 in the first flow storage tank 7. 11) The feed is made to the secondary screen 4 which rotates on it.

Secondary screen (4) is made of relatively finer than the primary screen (3), so that the various impurities and the like filtered on the primary screen (3) is filtered to the discharge drum (5) by the discharge screw (17) It is transported and collected as electricity by the drive of the screw press 6 to perform a separate treatment,

The filtrate separated from the secondary screen 4 is transferred to the solid-liquid separator through the filtrate outlet 23 in the second flow storage tank 24 to pass through the solid-liquid separation process.

That is, in the pretreatment process of sewage by the sewage and wastewater pretreatment apparatus of the present invention, the filtering process such as primary contaminants by the crude primary screen 3, and the collected filtrate to the fine secondary screen 4 By transporting the filtrate collected by the filtering process, such as secondary contaminants to the solid-liquid separation process to treat the sewage by a known method,

The contaminants collected from the primary and secondary screens 3 and 4 are separately collected by transporting through the screw press 6 through the discharge drum 5.

As described in detail above, the present invention provides a pretreatment apparatus and a method for filtering contaminants, debris, seeds, etc. in various sewage, but the primary and secondary screens 3, which are simultaneously driven by a single driving unit 2, 4) Inflow of sewage and transfer the filtrate dehydrated from the crude primary screen (3) to the secondary screen (4) of finewood again to filter out fine contaminants, etc. It can be efficiently filtered with low power and dehydrated filtrate can be transferred to solid-liquid separation process to maximize treatment efficiency such as sewage.

Collected contaminants, etc. can be immediately collected by using a screw press (6) to increase the processing efficiency of the contaminants.

In addition, the volume of the device can be minimized, thereby reducing the space occupancy, significantly reducing the manufacturing and installation costs, etc. It is also a breakthrough invention that can provide various benefits in practical use due to convenient operation and operation.

Claims (3)

In the sewage and wastewater pretreatment method containing various contaminants, debris, seeds and the like; The sewage and wastewater are introduced into the primary screen 3 of the tank which is driven by the driving unit 2 through the inlet unit 16, and the filtrate is dewatered and separated into the first flow storage tank 7, and the contaminant is filtered and discharged. Discharging through the drum (5) and the screw press (6), The filtrate is dewatered on the primary screen (3) and stored in the first flow storage tank (7) flows into the secondary screen (4) of the fine details which are rotated by the same drive unit 2 as the primary screen (3) Dewatering to the second flow storage tank (22) to the second to be transported to the solid-liquid separator through the filtrate discharge port 23, the contaminants, etc. are filtered to discharge through the discharge drum (5) and screw press (6) Sewage and wastewater pretreatment method. In the sewage and waste water pretreatment apparatus containing various contaminants, debris, seeds, etc .; The base 1 is provided with a primary and secondary screens 3 and 4 consisting of crude and fine details connected to and driven by the driving unit 2 on the same shaft 11 laterally, and a discharge drum 5 between these phases. Simultaneous rotation drive, the lower portion of the discharge drum (5) is provided with a screw press 6 for compressing and transporting contaminants, debris, seeds, Discharge screws 17 are formed in the first and second screens 3 and 4, and first and second flow rate storage tanks 7 and 22 are respectively installed at lower portions thereof. The first flow storage tank (7) is connected to the transfer pipe (21) having a pump (20) connected to the pump motor (19) by the secondary screen (4) to filter the first collected filtrate secondly and the second To transfer to the flow reservoir 22, The sewage and wastewater pretreatment apparatus, characterized in that the second flow rate storage tank 22 is formed with a filtrate discharge port 23 for discharging the filtrate. The method of claim 2; Sewage and wastewater pretreatment device, characterized in that the bypass pipe 24 is installed between the discharge drum (5) and the second flow rate storage tank (22).