KR102339744B1 - Drum screen device for wastewater treatment - Google Patents

Abstract

Disclosed is a drum screen device for wastewater treatment. The drum screen device for wastewater treatment according to an embodiment of the present invention includes: a drum screen that is rotationally installed on a support frame and separates contaminants and water from wastewater introduced inside; a cylindrical housing installed around the drum screen; and a rotation driving unit for rotating a main roller that rotates and supports the housing, wherein the drum screen can have an inner screw spirally installed therein.

Description

Drum screen device for wastewater treatment

The present invention relates to a drum screen device for wastewater treatment.

In the case of sewage, wastewater, and sewage (collectively referred to as 'sewage water'), if nitrogen or phosphorus generated from agricultural fertilizers, human or livestock manure, and synthetic detergents flows into the water, eutrophication, red tide, fish toxins, and dissolved oxygen deficiency, etc. will cause Therefore, it is required to treat the nitrogen and phosphorus content, water turbidity, PH, etc. in wastewater to a certain level.

As an advanced wastewater treatment system, BNR (Biological Nutrient Removal, advanced treatment to remove biological nutrients, total nitrogen (TN), total phosphorus (TP) removal treatment) is a biologically contaminated organic matter (COD) in wastewater contaminated with microorganisms. , BOD), suspended solids (SS), and odor substances, as well as nutrients and micro-toxic substances (ECs), the SBR (Sequencing Batch Reactor) method is used to treat water pollutants. In the case of advanced wastewater treatment (BNR) process, there are organic matter (BOD) removal process and nitrification process/denitrification and T-P removal process for T-N removal.

Before this biological treatment step, the process of removing contaminants (or suspended matter) from the introduced wastewater needs to be preceded. A drum screen is used to remove contaminants. After large contaminants are filtered out of the drum screen, they are not discharged well or are discharged together with water, which is inconvenient for maintenance.

Korean Utility Model Registration No. 20-0354977 (Registered on June 22, 2004) - Wastewater treatment device

An object of the present invention is to provide a drum screen device for wastewater treatment that effectively separates contaminants during the process of treating wastewater, and allows only contaminants to be discharged without water being discharged through an outlet.

According to the present invention, large-sized suspended matter is cut to reduce its size so that it smoothly proceeds toward the outlet, and a high pressure is applied at the outlet side by applying a variable-pitch inner screw to separate the water contained in the filtered contaminants as much as possible. To provide a drum screen device for processing.

Other objects of the present invention will become clearer through preferred embodiments described below.

According to one aspect of the present invention, there is provided a drum screen device for wastewater treatment, comprising: a drum screen rotatably installed on a support frame and configured to separate and discharge contaminants and water from wastewater flowing therein; a cylindrical housing installed around the drum screen; and a rotation driving unit for rotating the main roller for rotationally supporting the housing, wherein the drum screen has an inner screw spirally installed therein.

The drum screen is disposed on the inlet side of the wastewater inlet, the main body of the cylindrical shape is made of a mesh and the water is discharged through the circumferential surface; It is disposed on the outlet side from which the contaminants are discharged and includes a tapered body portion having a tapered shape having a reduced diameter, and the pitch of the inner screw may be narrower in the tapered body portion than in the main body portion.

The inner screw may have a right-angled triangular cross section, an outlet side surface may be a vertical surface, and an inlet side surface may be an inclined surface.

The inner screw may have cutting blades recessed in a hook shape on the outer circumferential surface at regular intervals.

Other aspects, features and advantages other than those described above will become apparent from the following drawings, claims, and detailed description of the invention.

According to an embodiment of the present invention, there is an effect of effectively separating contaminants during the process of treating wastewater, and allowing only contaminants to be discharged without discharging water through the outlet.

In addition, large suspended matter is cut to reduce its size so that it proceeds smoothly toward the outlet, and high pressure is applied from the outlet side by applying a variable-pitch inner screw to separate the water contained in the filtered contaminants as much as possible. have.

1 is a perspective view of a drum screen device for wastewater treatment according to an embodiment of the present invention;
2 is a front view of a drum screen device for wastewater treatment according to an embodiment of the present invention;
3 is a side view of a drum screen device for wastewater treatment according to an embodiment of the present invention;
4 is a perspective view of the drum screen;
5 is a front view and an enlarged cross-sectional view of the drum screen.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

When an element is referred to as being “connected” or “connected” to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is used only to describe specific embodiments, and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In addition, the components of the embodiment described with reference to each drawing are not limitedly applied only to the embodiment, and may be implemented to be included in other embodiments within the scope of maintaining the technical spirit of the present invention, and also Even if the description is omitted, it is natural that a plurality of embodiments may be re-implemented as one integrated embodiment.

In addition, in the description with reference to the accompanying drawings, the same components regardless of the reference numerals are given the same or related reference numerals, and the overlapping description thereof will be omitted. In describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a perspective view of a drum screen device for wastewater treatment according to an embodiment of the present invention, FIG. 2 is a front view of a drum screen device for wastewater treatment according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention It is a side view of a drum screen device for wastewater treatment according to an example, FIG. 4 is a perspective view of the drum screen, and FIG. 5 is a front view and an enlarged sectional view of the drum screen.

1 to 5, the drum screen device 100, the support frame 120, the drum screen 110, the cover 122, the rotation driving unit 130, the main roller 132, the auxiliary roller 134, the housing ( 112), ring gear 114, 116, pump 140, washing line 142, nozzle 144, inlet pipe 124, storage tank 126, water inlet 123, water outlet 127 , the main body 212, the tapered body 214, the inner screw 220, the cutting blade 230, the outlet side face 222, the inlet side face 224, the mesh mesh body 216 are shown .

The drum screen device 100 for wastewater treatment according to an embodiment of the present invention is applied to a wastewater treatment system, and filters contaminants such as suspended matter contained in the introduced wastewater as a pre-stage of advanced treatment such as biological treatment, and filtering It is characterized in that the treated water is delivered to a biological treatment device at the downstream stage.

The drum screen apparatus 100 for wastewater treatment according to the present embodiment may include a drum screen 110 and a rotation driving unit 130 as a basic skeleton.

The drum screen 110 may be rotatably installed on the support frame 120 . The support frame 120 may include a flat plate and a plurality of legs supporting the same.

The rotation driving unit 130 is a driving means for providing rotational force to the drum screen 110 , and may be, for example, a geared motor.

The main roller 132 is connected to the rotation driving unit 130 , and the main roller 132 is rotated by the rotational force of the rotation driving unit 130 .

In this embodiment, the drum screen 110 is rotationally supported by the main roller 132 installed on the support frame 120 , and is rolled supported by the auxiliary roller 134 . The auxiliary roller 134 may be installed at a position symmetrical to the main roller 132 with respect to the drum screen 110 .

When the main roller 132 is rotated by the rotation driving unit 130, the drum screen 110 is rotated. And the auxiliary roller 134 may roll support the drum screen 110 so that when the drum screen 110 is rotated by the main roller 132, it can rotate smoothly about a horizontal axis of rotation.

A cylindrical housing 112 with an empty inside may be installed around the drum screen 110 . The drum screen 110 is firmly coupled to the inside of the housing 112 to be integrated, so that the housing 112 and the drum screen 110 can rotate together.

A first ring-shaped gear 114 may be installed at the front end of the circumferential surface of the housing 112 . The first ring-shaped gear 114 is a portion engaged with the main roller 132 and the auxiliary roller 134 , and transmits the rotational force of the main roller 132 to the housing 112 . And the auxiliary roller 134 may be supported by rolling to ensure smooth rotation.

The rear end of the drum screen 110 has a tapered shape that gradually decreases in diameter. Therefore, the rolling support by the roller is not smooth, the second ring-shaped gear 116 may be installed at the rear end of the circumferential surface of the cylindrical housing 112 having the same diameter in the longitudinal direction. The second ring-shaped gear 116 is supported by rolling by a pair of auxiliary rollers 134 installed on the support frame 120 . Accordingly, the housing 112 and the drum screen 110 therein are fitted with the main roller 132 and one auxiliary roller 134 meshed with the first ring-shaped gear 114 and the second ring-shaped gear 116 with each other. The physics can be rotated in a horizontal state by a pair of auxiliary rollers 134 .

At the front end of the drum screen 110, an inlet pipe 124 extending horizontally is installed along the axis of rotation. An inlet 123 is provided at the end of the inlet pipe 124 , and wastewater for removing contaminants flows into the inlet 123 and enters the drum screen 110 through the inlet pipe 124 .

The drum screen 110 includes a main body 212 made of a mesh mesh as a basic skeleton. Accordingly, water (treated water) of the wastewater introduced into the drum screen 110 may be collected into the lower storage tank 126 through the mesh network. A treated water outlet 127 for discharging the treated water collected in the storage tank 126 may be installed at one side of the storage tank 126 .

As the processing time elapses, the filtered contaminants are adhered to the main body 212 made of the mesh mesh of the drum screen 110 . Accordingly, a washing line 142 for washing it may be installed on the drum screen 110 . A plurality of nozzles 144 disposed to face the drum screen 110 may be provided in the washing line 142 . The washing water pumped by the pump 140 is supplied to the plurality of nozzles 144 along the washing line 142 , and the washing water is supplied to the main body 212 of the drum screen 110 from the plurality of nozzles 144 . By spraying, impurities attached to the mesh can be separated from the mesh.

Here, the housing 112 surrounding the drum screen 110 may also be made of a mesh mesh for a portion to which the washing water is sprayed. Accordingly, the washing water can be smoothly sprayed into the drum screen 110 through the housing 112 .

A cover 122 for protecting the drum screen 110 without interfering with rotation may be installed on the outside of the drum screen 110 . The washing line 142 and the nozzle 144 may also be installed in the cover 122 to be protected from the external environment.

4 and 5, the drum screen 110 is shown in detail.

The body of the drum screen 110 may be divided into a main body 212 and a tapered body 214 .

The main body 212 may have a cylindrical shape having the same diameter, and the tapered body 214 may have a tapered shape inclined so that the diameter decreases toward the outlet.

The peripheral surface of the main body portion 212 may be made of a mesh mesh. This is to recover the remaining treated water excluding contaminants from the wastewater introduced into the drum screen 110 .

An inner screw 220 may be installed inside the drum screen 110 . The inner screw 220 is a screw having a predetermined height and spirally installed along the main body 212 and the tapered body 214 . The inner screw 220 moves contaminants among the wastewater introduced into the drum screen 110 toward the outlet.

The inner screw 220 may have a narrower pitch toward the exit. That is, the pitch of the P2 portion is provided to be narrower than the pitch of the P1 portion. This provides a strong pressure to the contaminants toward the outlet, so that they proceed smoothly to the outlet.

The tapered body portion 214 may be implemented to be inclined toward the outlet to prevent water from being discharged to the outside of the outlet. Therefore, in the tapered body portion 214, contaminants are smoothly discharged to the outlet by the inner screw 220 having a narrower pitch, while water is not discharged to the outside and stored in the lower portion through the mesh network in the main body portion 212. By allowing water to be collected in the tank 126 , the inconvenience of maintenance can be eliminated.

The inner screw 220 may have a cross section of a right-angled triangle shape. The outlet side surface 222 may be a vertical surface, and the inlet side surface 224 may be an inclined surface. That is, by making the incline from the inlet to the outlet, the contaminants can be smoothly transferred while passing smoothly without being caught in the inner screw 220 .

Cutting blades 230 may be formed on the inner screw 220 at regular intervals. The cutting blade 230 is recessed in the outer circumferential surface of the inner screw 220 in a hook shape. The cutting blade 230 is formed for the purpose of more efficiently transporting the contaminants being raised on the inner screw 220 . When the contaminants are transported on the rotating inner screw 220 , the cutting blade 230 grabs and drags the contaminants to forcibly rotate the contaminants according to the rotation of the inner screw 220 , so the contaminants ride on the inner screw 220 . can be transferred smoothly.

In this embodiment, the cutting blades 230 are shown to be formed every 90 degrees (˚), but this is only an embodiment, and it is of course that they can be formed to have various intervals as needed.

Although the above has been described with reference to the preferred embodiment of the present invention, those of ordinary skill in the art may change the present invention in various ways within the scope without departing from the spirit and scope of the present invention described in the claims below. It will be appreciated that modifications and variations are possible.

100: drum screen device 110: drum screen
120: support frame 122: cover
130: rotation driving unit 132: main roller
134: auxiliary roller 112: housing
114, 116: ring gear 140: pump
142: washing line 144: nozzle
212: main body 214: tapered body
216: mesh mesh 220: inner screw
230: cutting blade

Claims (4)

A drum screen device for wastewater treatment, comprising:
a drum screen that is rotatably installed on the support frame and separates and discharges contaminants and water from the wastewater flowing therein;
a cylindrical housing installed around the drum screen and rotatably coupled with the drum screen; and
Comprising a rotation driving unit for rotating the main roller for rotationally supporting the housing,
The drum screen has an inner screw spirally installed on the inner surface,
The drum screen is disposed on the inlet side of the wastewater inlet, the main body of the cylindrical shape made of a mesh and the water is discharged through the circumferential surface; It is disposed on the outlet side from which the contaminants are discharged and includes a tapered body portion having a tapered shape having a reduced diameter,
The pitch of the inner screw is narrower in the tapered body portion than in the main body portion,
The housing includes: a first ring-shaped gear installed at the front end of the circumferential surface; It includes a second ring-shaped gear installed at the rear end of the circumferential surface,
The rotation driving unit includes a geared motor; 1 main roller; including three auxiliary rollers,
The main roller is rotationally driven by the geared motor, and is engaged with the first ring-shaped gear to rotate and support the housing,
one of the three auxiliary rollers meshes with the first ring-shaped gear and roll-supports the housing;
The other two of the three auxiliary rollers mesh with the second ring-shaped gear and roll support the housing,
The inner screw has a hook-shaped cutting blade recessed on the outer circumferential surface at regular intervals, and the cutting blade catches and draws the contaminants.
delete The method of claim 1,
The inner screw has a right-angled triangular cross section,
A drum screen device for wastewater treatment, characterized in that the outlet side is a vertical surface and the inlet side is an inclined surface.
delete

Images