KR20190019311A - One Type Water Treatment Apparatus - Google Patents

Abstract

The present invention relates to an integrated water treatment apparatus capable of removing algae. More particularly, the present invention relates to an integrated water treatment apparatus capable of removing algae comprising: a main body unit having a predetermined volume and shape and having an inlet through which raw water flows and an outlet through which treated water is discharged; and a partition wall partitioning an inner space of the main body unit into an adsorption and coagulation reaction unit and a solid-liquid separation unit, wherein the adsorption and coagulation reaction unit comprises at least one first disturbance plate and at least one second disturbance plate, and the solid-liquid separation unit comprises at least one porous plate having a plurality of through holes and at least two inclined plates inclined at a predetermined angle.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a one-

The present invention relates to an integrated water treatment apparatus capable of removing algae, and more particularly, to a compact water treatment apparatus capable of removing green algae such as cyanobacteria and green algae together with various organic and inorganic contaminants.

The tap water that we drink is purified by using various water systems such as rivers, dams, and lakes as raw water. Specifically, the raw water that has been taken out removes various suspended substances and dissolved substances through a flocculation step, a precipitation step, a sand filtration step, an activated carbon filtration step, an ozone oxidation step and a membrane filtration step in a water purification plant.

In order to prevent contamination by microorganisms that can not be removed afterwards and microorganisms that may occur during the watering process, it is a common water treatment process to lastly water each household after sterilization process.

Here, the flocculation and sedimentation stages are a very old unit process of a typical water treatment process and are applied to almost all water treatment plants.

On the other hand, nutrients such as nitrogen and phosphorus flow into the water system, and due to the increase in temperature due to global warming, green water tides frequently occur in various water systems including water sources. Green algae means a phenomenon in which water is green, and is a result of abnormal growth of green algae and cyanobacteria. Such a green algae phenomenon can be a health hazard as well as aesthetic. In other words, since cyanobacteria produce microcystin toxins, if the water containing these toxins is used as the water source, the toxins must be completely removed. However, in most water purification plants, there is no separate unit process for removing toxins caused by cyanobacteria.

In addition, although it does not produce toxins, green algae can obstruct sand filters and cause breakdowns in piping and equipment, thus acting as a major obstacle in the treatment of water.

Korean Patent Registration No. 1645540

Disclosure of the Invention The present invention has been devised to solve the above-mentioned problems, and it is an object of the present invention to provide a water treatment apparatus capable of effectively removing water even if it contains toxic substances produced by green algae, cyanobacteria or blue algae The purpose.

Another object of the present invention is to provide a water treatment apparatus capable of reducing installation site and production cost by compacting the apparatus while eliminating various pollutants together with algae and the like.

In order to solve the above problems, an integrated water treatment apparatus capable of removing algae according to the present invention comprises: a body portion having a predetermined volume and shape and having an inlet through which raw water flows and an outlet through which treated water is discharged; And a partition wall partitioning the inner space of the main body section into an adsorption and coagulation reaction section and a solid-liquid separation section, wherein the adsorption and agglomeration reaction section includes at least one first disturbance plate and at least one second disturbance plate, The solid-liquid separator includes at least one porous plate having a plurality of through holes and at least two inclined plates inclined at a predetermined angle.

In addition, the adsorption and flocculation reaction unit is preferably provided with an activated carbon injection pipe in the vicinity of the inlet and a flocculant injection pipe in the rear of the activated carbon injection pipe, and the flocculation step is performed after the adsorption step with activated carbon.

In addition, at least two of the first obstruction plates are provided in a zigzag manner so that the activated carbon and the raw water can be stirred by the water stream.

Further, two or more of the second baffles may be provided, and the space formed by the second baffle may further include an agitator.

In addition, it is preferable that the height of a predetermined region of the partition wall is low so that the raw water having completed the coagulation step can flow over the solid-liquid separator.

The activated carbon is preferably 1,250 mesh or less.

Further, it is more preferable that the at least two inclined plates are inclined with respect to the water surface by 50 ° to 70 °, and each inclined plate is separated by 4 cm to 6 cm.

According to the integrated water treatment apparatus of the present invention capable of eliminating the algae, since the adsorption and flocculation reaction unit is provided on one side of one body portion and the solid-liquid separation unit is provided on the other side adjacent to the body, space for installation of the device can be saved In addition, it has the advantage of reducing production costs.

In addition, according to the integrated water treatment apparatus of the present invention, it is possible to remove toxins generated by algae and algae by injecting fine powdered activated carbon into the inlet side where raw water flows, thereby being applicable to the production of food water with high reliability .

1 is a perspective view of an integrated water treatment apparatus capable of removing algae according to a preferred embodiment of the present invention.
2 is a sectional view taken along the line AA 'of FIG. 1 corresponding to the adsorption and flocculation reaction unit.
3 is a cross-sectional view taken along the line BB 'of FIG. 1 corresponding to the solid-liquid separation portion.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an integrated water treatment apparatus capable of removing algae according to the present invention will be described with reference to the accompanying drawings.

The use of the terms "comprises", "having", or "having" in this application is intended to specify the presence of stated features, integers, steps, components, parts, or combinations thereof, But do not preclude the presence or addition of features, numbers, steps, operations, components, parts, or combinations thereof.

Also, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

1 is a perspective view of an integrated water treatment apparatus capable of removing algae according to a preferred embodiment of the present invention.

 As shown in FIG. 1, the integrated water treatment apparatus capable of eliminating algae includes an adsorption and flocculation reaction unit 200 and a solid-liquid separation unit 300 in one body part 100.

1, the partition wall 160 is provided along the longitudinal direction of the main body 100, and the raw water is introduced into the right side of the main body 100, the algae is adsorbed by the activated carbon, and the flocculant injected with the activated carbon and various contaminants And a solid-liquid separator 300 is disposed on the left side of the adsorption and coagulation reactor 200. The solid-liquid separator 300 has adsorbed and coherent raw water flowing thereinto, followed by solid-liquid separation.

Conventionally, a reaction tank for adsorbing activated carbon and a coagulation / precipitation reaction tank for solid-liquid separation are generally provided separately. Therefore, the installation space can not be efficiently used and the reaction tank has been separately manufactured. However, the integrated water treatment apparatus of the present invention includes an adsorption and coagulation reaction unit 200 on one side and a solid-liquid separation unit 300 on the other side inside the body 100, And it is advantageous in that the manufacturing cost can be reduced.

The main body 100 has a rectangular cross section, a square cross section, and a predetermined height, and is hollow. In addition, an inlet 110 for introducing raw water to be purified by drinking water such as river water or lake water is formed at one side, and an outlet 120 for discharging ultimate treated water is formed near the same side.

A bottom surface of the main body 100 may have a hopper-shaped sludge collecting part (hereinafter, referred to as " sludge collecting part ") having a gradually narrower sectional area so as to easily collect sedimentation or flocculated sludge generated in an activated carbon adsorption process, 130 are provided. Here, the sludge collecting unit 130 may separately collect sludge generated in each of the activated carbon adsorption process, coagulation process, and sedimentation process. In addition, the sludge collecting unit 130 is provided with a sludge discharge pipe 140 for discharging the collected sludge at a predetermined concentration or more at a predetermined time interval, and the sludge discharge pipe 140 is provided with a sludge discharging pipe A sludge discharge valve 150 is mounted.

Fig. 2 is a cross-sectional view taken along the line A-A 'of Fig. 1 corresponding to the adsorption and flocculation reaction unit. Referring to FIGS. 1 and 2, the adsorption and coagulation reaction unit provided in the space portion on one side of the main body 100 will be described in detail.

As described above, the adsorption and agglomeration reaction unit 200 formed by the partition wall 160 provided along the longitudinal direction of the main body 100 includes at least one first disturbance plate 220 and at least one second disturbance And a plate 240.

More preferably, at least one, more preferably at least two, and most preferably at least three first baffles 220 are provided to form a space in which the raw water introduced into the inlet 110 first contacts the activated carbon And an activated carbon injection pipe 210 for injecting activated carbon is located in the vicinity of the inlet 110. At this time, it is preferable that the first baffle plate 220 is formed in a staggered shape as viewed from above, and this is for inducing natural stirring and blending with activated carbon by the flow of moving raw water.

Here, the activated carbon is preferably powder activated carbon, and more preferably 1,250 mesh or less. In general, green algae and cyanobacteria cause green algae. Particularly, a toxic substance called microcystin produced by cyanobacteria is a toxin. Therefore, in order to effectively adsorb and remove the algae, powdered activated carbon of 1,250 mesh or less is injected so as to maximize the specific surface area. The powdered activated carbon may be injected in a slurry state mixed with water, but is not limited thereto.

A flocculant injection pipe 230, a second obstruction plate 240, and an agitator 250 are provided behind the first obstruction plate 220. A known coagulant mainly containing aluminum or iron is injected through the coagulant injecting pipe 230 to a predetermined concentration range behind the first obstructing plate 220. Subsequently, the stirrer 250 is located in the space defined by one or more, more preferably two or more, second barrier plates, and the coagulant and the raw water are stirred.

At this time, the stirrer 250 is preferably two, one for rapid stirring and one for slow stirring. The rapid stirring and the slow stirring as described above correspond to a technique commonly employed in the field of water treatment using a flocculant, and thus a detailed description thereof will be omitted. Of course, one stirrer 250 can be used for rapid stirring because the perforated plate 310, which will be described later, can play a role of slow stirring.

Unlike the first baffle plate 220, the second baffle plate 240 is in contact with the bottom and side surfaces of the main body 100 and the partition wall 160 except for the upper periphery. Therefore, the raw water passing through the first obstruction plate 220 moves while overflowing the upper circumference of the second obstruction plate 240, and the height of the second obstruction plate 240 is lower than that of the first obstruction plate 220 .

In the adsorption and flocculation reaction unit 200 as described above, algae containing toxic substances contained in the raw water and a part of the dissolved substances are adsorbed by contact with the powdered activated carbon, and then the contaminants suspended by the coagulant injection Some of the dissolved contaminants are granulated and settled to the bottom of the main body 100, and the settled contaminants collect in the sludge collecting unit 130.

3 is a cross-sectional view taken along the line B-B 'in Fig. 1 corresponding to the solid-liquid separator. Referring to FIGS. 1 and 3, the solid-liquid separator 300 provided in the space portion on one side of the main body 100 will be described in detail.

In the above-described adsorption and coagulation reaction unit 200, algae and a part of contaminants can be precipitated and removed by injecting powdered activated carbon and coagulant. However, it still contains pollutants and requires additional purification steps. Particularly, when the coagulant is injected and agitated, the particles become larger and become more susceptible to sedimentation, but some particles are still small and can not settle easily. The solid-liquid separator 300 performs a function of separating and removing the contaminants having a small particle size as described above, and separating and removing the substances, which are hardly settled due to no larger particles.

The solid-liquid separator 300 includes at least one perforated plate 310 having a plurality of through holes 311, a guide plate 320, and at least two inclined plates 330 inclined at a predetermined angle.

Specifically, a plurality of through holes 311 are formed in the space portion of the main body 100 on the opposite side of the adsorption and agglomeration reaction portion 200 with the partition wall 160 therebetween, 310 are arranged vertically, leading to a large particle of contaminants. That is, when the raw water passed through the adsorption and cohesion reaction unit 200 passes through the through hole 311 of the perforated plate 310, the flow rate becomes faster. However, since the flow rate after passing through the through hole 311 becomes lower, So that the particle size can be increased to such an extent that even small contaminants can settle while passing through the perforated plate 310.

Meanwhile, the partition wall 160 near the perforated plate 310, which is farthest from the outlet 120, may be installed at a slightly lower level so that the effluent of the adsorption and flocculation reaction unit 200 can be introduced into the solid- It is preferable that a passage (not shown) is opened in the partition wall 160.

A guide plate 320 having a lower edge portion bent at a predetermined angle in the direction of the outlet 120 is positioned behind the perforated plate 310 so that raw water having passed through the perforated plate 310 can be moved toward the bottom of the main body 100. This is to induce the flow of raw water so that the raw water can pass through the swash plate 330, which will be described later, in an upward flow.

There are pollutants that pass through one or more of the perforated plates 310 and are sufficiently large in size of the polluted particles to settle down to the bottom of the main body 100 but do not increase in size any more.

The swash plate 330 provided at the back of the guide plate 320 guides the raw water upward to cause collision between the particles and the swash plate 330 to remove particles that are difficult to settle. Specifically, the swash plate 330 is composed of two or more slopes inclined at a predetermined angle, more preferably, 50 to 70 degrees with respect to the water surface. Further, it is preferable that the two or more swash plates 330 are separated from each other by a predetermined distance, more preferably 4 cm to 6 cm.

If the angle of the swash plate 330 is less than 50 ° or the separation distance is less than 4 cm, the processing capacity of the raw water is too small. On the contrary, if the angle of the swash plate 330 exceeds 70 ° or the separation distance exceeds 6 cm, Since the swash plate 330 can not sufficiently contact and the removal efficiency of the particles is low, the angle and the separation distance of the swash plate 330 are preferably in the above range.

As described above, the concentration of algae and various contaminants in the water having passed through the swash plate 330 in the upward flow is remarkably low. After passing through the overflow weir 340 located above the swash plate 330, (Not shown).

Hereinafter, a method for purifying water using the water treatment apparatus according to the present invention will be described.

First, raw water for purification such as river water or dam water is supplied to the inlet 110 of the main body 100. Simultaneously with or after the raw water supply, powdered activated carbon is continuously or discontinuously injected into the activated carbon injection pipe 210 to a predetermined range. Then, the powdered activated carbon and the raw water are stirred while passing through the first obstruction plate 220 in a zigzag manner. In this process, contaminants including algae are adsorbed on the activated carbon.

Thereafter, the agitator 250 is operated while injecting the flocculant into the predetermined range with the flocculant injection pipe 230. Activated carbon and various pollutants contained in the raw water are agglomerated, and relatively large particles settle to the sludge collecting unit 130 of the main body 100.

Next, the relatively small contaminant particles that can not settle in the coagulation reaction section pass through the perforated plate 310, and the particles become large, and some particles settle down. The finer particles which have not yet settled while passing through the swash plate 330 in an upward flow are also removed and finally discharged to the outlet 120 after passing through the overflow ware 340.

Having thus described a particular portion of the present invention in detail, those skilled in the art will appreciate that these specific embodiments are merely preferred embodiments and that the scope of the present invention is not limited thereby, It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the invention, and that such modifications and variations are intended to fall within the scope of the appended claims.

100:
110: entrance
120: Exit
130: sludge collecting unit
140: sludge discharge pipe
150: Sludge discharge valve
160:
200: adsorption and flocculation reaction unit
210: activated carbon injection tube
220: 1st interference plate
230: coagulant injection tube
240: 2nd disturbance plate
250: stirrer
300: Solid-liquid separation unit
310: Perforated plate
311: Through the hole
320: Signage
330: swash plate
340: Overwear
400: stirrer

Claims (7)

A main body 100 having an inlet 110 through which raw water flows and an outlet 120 through which process water is discharged, the main body 100 having a predetermined volume and shape; And
And a partition wall 160 separating the inner space of the main body 100 into an adsorption and coagulation reaction unit 200 and a solid-liquid separation unit 300,
The adsorption and flocculation reaction unit 200 includes at least one first obstruction plate 220 and at least one second obstruction plate 240,
Wherein the solid-liquid separator (300) comprises at least one perforated plate (310) having a plurality of through holes (311) and at least two inclined plates (330) inclined at a predetermined angle. Water treatment device.
The method according to claim 1,
The adsorption and flocculation reaction unit 200 sequentially includes an activated carbon injection pipe 210 near the inlet 110 and a flocculant injection pipe 230 behind the activated carbon injection pipe 210. After the adsorption step with activated carbon And an agglomeration step is carried out in the integrated treatment device.
3. The method of claim 2,
Wherein the first disturbing plate (220) is provided in two or more zigzags, and activated carbon and raw water are agitated by water currents.
3. The method of claim 2,
Wherein the second disturbing plate (240) is provided with two or more disturbing plates (240), and the space formed by the second disturbing plate (240) further includes an agitator (250).
The method according to claim 3 or 4,
Wherein the height of a predetermined region of the partition wall (160) is low so that the raw water after the coagulation step is completed can be flowed to the solid-liquid separator (300).
5. The method according to any one of claims 2 to 4,
Wherein the activated carbon is 1,250 mesh or less.
The method according to claim 6,
Wherein the at least two swash plates (330) are inclined with respect to the water surface by 50 ° to 70 °, and each swash plate (330) is separated by 4 cm to 6 cm.

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