KR100786774B1 - Precipitating apparatus - Google Patents

Abstract

An integrated settling equipment is provided to realize a settling process with inclined plates together with a coagulating reaction process in a single equipment, and a compact integrated settling equipment is provided to reduce the installation area of the equipment. An integrated settling equipment(10) comprises: a settling tank(11) in which influent is filled, which discharges thickened sludge formed by settling flocs contained in the influent, and which collects and discharges raw water that has been separated from the flocs; a coagulating reaction part(13) which is disposed at one side of an upper part within the settling tank to discharge flocs to the settling tank when the flocs are formed by reacting a coagulant with suspension that has flown into the coagulating reaction part from the outside; and a plurality of inclined plates(20) which form a passage to lift micro flocs in flocs that have discharged from the coagulating reaction part through the passage, and which are disposed at one side within the settling tank with being spaced from one another to grow the micro flocs into macro flocs by inducing coagulation between the micro flocs to induce the settling of the micro flocs that lift along the passage.

Description

Integral Precipitator {PRECIPITATING APPARATUS}

1 is a partially cutaway perspective view showing an integrated precipitation device according to an embodiment of the present invention;

2 is a cross-sectional view taken along the X-X line shown in FIG.

3 is a perspective view illustrating the inclined plate illustrated in FIG. 2.

* Description of Signs of Major Parts in Drawings *

11: settling tank 13: flocculation reactor

15: stirring section 19: treated water collection tank

20: inclined plate

The present invention relates to a sedimentation apparatus, and in particular, as the sedimentable material, such as single particles, flocculation flocs, is precipitated by its own weight, the suspension is separated into treated water and a more concentrated suspension. The present invention relates to a precipitation apparatus used in the precipitation process of a water treatment room for increasing the filtration efficiency.

In general, the main processes of water purification facilities consist of sedimentation, filtration and disinfection. Sedimentation is a pre-treatment process that not only significantly affects the operation of filter paper, which is the next process, but also affects the efficiency of the whole water treatment system. It is an important unit process that can be determined. In addition, the sedimentation efficiency of the final sedimentation tank of the sewage treatment plant not only determines the discharge water quality but also has an important effect on the unit process of the advanced treatment (tertiary) treatment.

In particular, flocculation sedimentation treatment for removal of dissolved organics, especially low molecular weight and hydrophilic dissolved organic matters is relatively less efficient than other treatment processes such as ozone treatment or activated carbon adsorption, but flocculation sedimentation treatment technology has been widely used until now. There was an advantage that it can be applied through simple improvement of existing treatment facilities. Factors affecting the removal of dissolved organic matter in the conventional flocculation sedimentation treatment are pH, acid injection amount, temperature, type of flocculant, flocculant amount, raw water quality, and the like. It is known that 86% of humic acid and 22% of fulvic acid are removed through coagulation sedimentation.

Ultra Rapid Coagulation (URC) process, which is one of the coagulation sedimentation process, uses a weighted coagulant composed of glass, bentonite, silica sand, zeolite, etc. to secure sufficient initial collision particles to increase flocculation and sedimentation of floc and to treat It is a method to increase the efficiency. This process has the advantage that the treatment speed is faster than the general coagulation sedimentation process, easy to adapt to the flow load fluctuations, and maintain a stable treatment water quality through the sludge conveyance. In addition, various attempts have been made for inclined plate width, spacing, inclined plate angle, etc. in order to obtain the maximum sedimentation efficiency by attaching an inclined inclined plate to minimize the land area according to the sedimentation efficiency in the existing sedimentation basin. The inclined plate sedimentation basin is installed on the top of the sedimentation basin of the large upstream split type inclined plate module is mounted at an angle of 50 to 60 degrees in a structure having a footnote cross-section and the space between the inclined plate forms a series of parallel channels. It is possible to achieve high effective sedimentation area increase by the inclined plate, so that the sedimentation of the sedimentation plate can be achieved at high speed even though the fast rising flow has a structure that can be a uniform and even ascending flow without breaking the fluid flow in the inclined plate settling tank.

However, the conventional sedimentation apparatus for performing the coagulation sedimentation process, there are problems such as the complex land management requirements and the complexity of operation management due to the separation of the mixing and flocculation reaction step, the precipitation step. In addition, the lamellar (lamella) type inclined plate is a method introduced to obtain a more efficient precipitation effect in a small area, but in the case of non-aggregated particles, the efficiency is greatly reduced.

In order to solve the above problems, the present invention is to provide an integrated precipitation apparatus that can implement the aggregation reaction process and the precipitation process having a slope plate together in a single device.

In addition, another object of the present invention is to provide a compact coincidence settling device to reduce the installation area.

In order to achieve the above object, the present invention is the inlet is charged in the inside, the floc included in the inlet to discharge the concentrated sludge formed by precipitation, the sedimentation tank for collecting / discharging the treated water separated from the floc; An agglomeration reaction part disposed at an upper portion of the sedimentation tank and discharging the suspension flowing from the outside to the sedimentation tank of the floc formed by reacting with a coagulant; And forming a passage to raise a fine floc among the flocs discharged from the flocculation reaction part, and inducing aggregation of the fine flocs to induce precipitation of the fine flocs rising along the passage to grow into a large floc. It provides a one-piece settling device comprising a; a plurality of inclined plates disposed at intervals in one side.

The settling tank is disposed in the upper portion of the other side in the settling tank, the treated water inflow tank into which the treated water from which the floc is removed through the plurality of inclined plates; A first discharge pipe for discharging the concentrated sludge deposited on the lower portion of the settling tank; A second discharge pipe communicating with the other upper portion of the settling tank so as to communicate with the treated water inflow tank and for discharging the treated water to the outside; And an inclined portion of which one side of the sedimentation tank is inclined downward toward the first discharge pipe to guide the large floc settled in the gravity direction in the settling tank toward the first discharge pipe.

The flocculation reaction unit is a flocculation reaction tank in which the external influent and flocculant are charged together;

A motor installed outside the coagulation reaction tank; And a screw for rotationally driving inside the flocculation tank by the motor, wherein the screw agitates the inflow water and the flocculant introduced into the flocculation tank, and discharges flocs formed by the agitation to the plurality of inclined plates. You can.

The plurality of inclined plates may be disposed to be inclined adjacent to the treatment water inlet tank side, the plurality of inclined plates to delay the rise of the fine floc rising to the passage between the plurality of inclined plates to increase the cohesion rate In order to achieve this, the vertical section may be streamlined. In this case, the plurality of inclined plates may include a first curved surface on which first rising fine flocs collide; And a second curved surface which is formed to extend above the first curved surface and rises in a second collision.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the integrated precipitation device according to an embodiment of the present invention.

1 is a partially cutaway perspective view showing an integrated precipitation apparatus according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line X-X shown in FIG. 1, and FIG. 3 is a perspective view showing the inclined plate shown in FIG.

Integrated precipitation apparatus according to an embodiment of the present invention, as shown in Fig. 1 and 2, the precipitation tank 11, the aggregation reaction unit 13, and includes a plurality of inclined plate (20).

The settling tank 11 includes a space portion 11a, a first discharge pipe 11b, a treated water inflow chamber 11c, a second discharge pipe 11d, and an inclined portion 11e.

The space portion 11a has a large floc F1 contained in the inflow water discharged from the coagulation reaction tank 13 at the lower side thereof, so that the concentrated sludge S is formed, and together with the plurality of inclined plates 20, Collisions between the particles of the floc provide space for aggregation.

The first discharge pipe 11b is formed in communication with a portion of the lower side of the sedimentation tank 11 to discharge the concentrated sludge S precipitated below the space portion 11a to the outside. In this case, it is preferable that a predetermined opening / closing valve (not shown) is formed in the first discharge pipe 11b so as to control the discharge and blocking of the concentrated sludge S.

The treated water inflow chamber 11c is disposed above one side of the settling tank 1, and the treated water in which the plurality of fine flocs S1 has been removed is introduced through the plurality of inclined plates 20. In this case, a partition wall 18 is formed between the space portion 11a and the treated water inflow chamber 11c, and the treated water is introduced at predetermined intervals so that the treated water flows into the treated water inflow chamber 11c at the upper end of the partition wall 18. Grooves 18a are formed.

The second discharge pipe 11d is formed in communication with one side of the treated water inflow chamber 11c and serves to transfer the treated water of the treated water inflow chamber 11c to the treated water tank (not shown).

The inclined portion 11e has one side of the settling tank 11 so as to be settled adjacent to the first discharge pipe 11b side when the fine floc F1 grown as a large floc by the plurality of inclined plates 20 falls in the gravity direction. Achieve. In this case, the inclined portion 11e is formed to be inclined toward the side of the first discharge pipe 11b to form a lower portion than the upper portion of the settling tank 11.

The agglomeration reaction part 13 includes an agglomeration reaction tank 13a disposed above the space portion 11a of the settling tank 11 by the support plate 17, and includes a coagulation reaction tank 13a coupled to the support plate 17. In the lower portion, a communication hole 17a is formed to communicate the agglomeration reaction tank 13 and the space portion 11a. In addition, the aggregation reaction unit 13 is formed with an inlet pipe 13b above the aggregation reaction tank 13a so that the inflow water and the flocculant flow into the aggregation reaction tank 13a from the outside. In addition, the coagulation reaction unit 13 is disposed on the outside of the coagulation reaction tank 13a and the motor 13c as it is arranged inside the coagulation reaction tank 13a and connected to the drive shaft 13d of the motor 13c. It includes a screw (13e) for driving rotation by applying the rotation force of the). In this case, the screw 13e agitates the inflow water and the coagulant flowing into the agglomeration reactor 13a through the inlet pipe 13b, and the plurality of inclined plates through the communication hole 17a through the agglomerated flocs formed by the agitation. Discharge to the (20) side.

As the plurality of inclined plates 20 are disposed at predetermined intervals from each other, the passages 21 are formed to raise the fine flocs F2 among the flocs discharged from the flocculation reaction part 13. In this case, the plurality of inclined plates 20 are disposed to be inclined adjacent to the treated water inlet 11c side. Furthermore, the vertical cross section is streamlined so as to increase the cohesion rate by delaying the rise of the fine floc F2 rising into the passage 21. As shown in FIG. 3, the plurality of inclined plates 20 formed in the streamline form the first curved surface 20a and the upper surface of the first curved surface 20a where the fine flocs F2 rising to the lower side collide with each other. The fine floc F2 that is formed and rises includes the second curved surface 20b that secondary collides with each other.

Referring to the operation of the integrated precipitation device according to an embodiment of the present invention configured as described above in order as follows.

First, the inflow water, which is a suspension, flows into the coagulation reaction tank 13a through the inflow pipe 13b. In this case, the inflow water is stirred and mixed by a screw 13e which is rotationally driven together with the flocculating agent 13a and the flocculating agent 13a, and the particles contained in the inflow react with the flocculating agent and the flocculating aid to form flocs. do. The floc formed in the agglomeration reaction tank 13a is discharged to the space portion 11a of the precipitation tank 11 through the communication hole 17a together with the inflow water.

The large floc F1 having a large specific gravity introduced into the space 11a immediately precipitates under the space 11a by its own weight, and the fine flocs F2 are formed by a plurality of inclined plates due to the turning force of the screw 13e. Ascending while moving toward 20).

These fine flocs F2 form a flow of water by the plurality of inclined plates 20 and ascend through the passages 21 between the plurality of inclined plates 20, and then the first and second curved surfaces 20a, When colliding with 20b), fine flocs F2 aggregate and gradually grow into large flocs. The huge floc F1 thus grown is settled to the lower portion of the space 11a, and the treated water separated from the floc continues to move upward toward the treated water collection tank 19 to process the treated water through the inflow groove 18a. The collection tank 19 is collected. The treated water collected by the treated water collection tank 19 is transferred to a treated water tank (not shown) through the second pipe 11d, and the concentrated sludge S deposited at the lower portion of the space 11a is transferred to the first pipe ( 11b) is transferred to a concentrated sludge tank (not shown) for processing.

In the present invention described above, the flocculation reaction tank is introduced into the settling tank to form a floc and then raised, and through the settling method using a streamlined inclined plate, it is possible to maximize the settling efficiency by effectively coping with various inflow water quality, as well as to the conventional settler In contrast, there is an advantage that can greatly reduce the required area of the sedimentation equipment.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described specific preferred embodiments, and the present invention belongs without departing from the gist of the present invention as claimed in the following claims. Those skilled in the art will be able to implement various modifications.

Claims (6)

A settling tank which is charged with inflow water and discharges concentrated sludge formed by precipitation of flocs contained in the inflow water, and collects / discharges treated water separated from the flocs; An agglomeration reaction part disposed at an upper portion of the sedimentation tank and discharging the suspension flowing from the outside to the sedimentation tank of the floc formed by reacting with a coagulant; And, In the settling tank to form a passage to raise the fine floc of the floc discharged from the agglomeration reaction section, to induce the flocculation of the fine floc rising along the passage to grow into a large floc in the flocculation tank It includes; a plurality of inclined plates arranged at intervals to one side, The plurality of inclined plates may include a first curved surface in which the plurality of inclined plates first collide with the rising fine floc in order to increase the cohesion rate by delaying the rising of the fine floc that rises in the passage between the plurality of the inclined plates. ; And a vertical cross section having a streamlined shape so as to include a second curved surface which is formed to extend above the first curved surface and has a second colliding surface which rises upward. The method of claim 1, wherein the settling tank A treatment water inflow tank disposed at an upper portion of the other side in the precipitation tank, through which the treated water from which floc has been removed is introduced through the plurality of inclination plates; A first discharge pipe for discharging the concentrated sludge deposited on the lower portion of the settling tank; A second discharge pipe communicating with the other upper portion of the settling tank so as to communicate with the treated water inflow tank and for discharging the treated water to the outside; And, And an inclined portion of which one side of the sedimentation tank is inclined downward toward the first discharge pipe so as to guide the large floc settled in the gravity direction in the settling tank toward the first discharge pipe side. According to claim 1, wherein the aggregation reaction unit An agglomeration reaction tank into which external influent and coagulant are charged together; A motor installed outside the coagulation reaction tank; And, A screw for rotationally driving inside the agglomeration tank by the motor, The screw is a one-piece precipitation device, characterized in that for stirring the inflow water and the flocculant flowing into the flocculation tank, and discharges the floc formed by stirring to the side of the plurality of inclined plates. The integrated precipitation apparatus of claim 1, wherein the plurality of inclined plates are disposed to be inclined adjacent to the treated water inflow tank side. delete delete

Images