KR101189912B1 - Apparatus for Treating Waste Water - Google Patents

Abstract

Provide a wastewater treatment device.

The present invention filter unit for filtering the foreign matter contained in the waste water; A mixing unit connected to the outlet through the first treatment water line and having a mixing tank in which treated water is introduced and filled therein, and adding a coagulant in the mixing tank to grow particles remaining in the treated water; A precipitation unit which is connected through the mixing tank and the second treated water line and has a precipitation tank filled with the treated water of the mixing tank to fill therein to precipitate the precipitate in which the particles are grown; Any one of the filter unit, the mixing tank and the settling tank is connected to the first and second treated water branch lines branched from the first and second treated water lines, and has a pressure pump connected to the settling tank and the third treated water line. A flotation removing unit having an air levitation tank having a supply pipe to which air is supplied together with the pressurized water pressurized by the treated water to float the particulate matter contained in the treated water; The sludge discharged from the filter water, the sedimentation unit and the flotation removal unit and the filter unit, the sedimentation unit and the flotation unit are connected to each other via the air flotation tank and the fourth treated water line, and the treated water storage tank for storing a predetermined amount of the processed water discharged from the air flotation tank is discharged. Includes a sludge collection reservoir for storage.

Waste water, mixing tank, sedimentation tank, air flotation tank, treated water storage tank, sludge collection storage tank

Description

Wastewater Treatment Equipment {Apparatus for Treating Waste Water}

The present invention relates to an apparatus for treating wastewater, and more particularly, it is possible to perform the wastewater purification treatment quickly and simply at the site of the source of pollution, and it is impossible to introduce a large-scale wastewater treatment facility and difficult to install on-site. The present invention relates to a wastewater treatment apparatus capable of purifying wastewater, thereby preventing secondary pollution by wastewater.

In general, water that accumulates in small and medium-sized ponds such as manhole sewage, artificial farm wastewater, livestock wastewater, and lakes becomes decayed after a certain period of time, and becomes a wastewater, such as construction sites, military training camps, outdoor training centers, and outdoor cooking facilities. Wastewater generated from outdoor facilities is discharged as it is, without being purified, causing odor and becoming a source of secondary pollution to the surrounding environment.

In order to purify the waste water, the waste water purification treatment facility must be installed in the waste water generating area. However, it is impossible to install the waste water in a short time due to economic, environmental and local conditions. to be.

Therefore, the present invention is to solve the above problems, the purpose is to quickly and easily perform the wastewater purification treatment at the site of the pollution source, it is impossible to introduce a large-scale wastewater treatment facility, the site installation is The present invention is to provide a wastewater purification treatment device that can prevent secondary pollution by wastewater because it is possible to treat wastewater in difficult sites.

As a specific means for achieving the above object, the present invention is a device for treating waste water, comprising a filtration member for filtering the waste water introduced in through the inlet, and equipped with an outlet for filtration treated water discharged waste water Filter unit for filtering the foreign matter contained in; A mixing unit connected to the outlet through the first treatment water line and having a mixing tank in which treated water is introduced and filled therein, and adding a coagulant in the mixing tank to grow particles remaining in the treated water; A precipitation unit which is connected through the mixing tank and the second treated water line and has a precipitation tank filled with the treated water of the mixing tank to fill therein to precipitate the precipitate in which the particles are grown; Any one of the filter unit, the mixing tank and the settling tank is connected to the first and second treated water branch lines branched from the first and second treated water lines, and has a pressure pump connected to the settling tank and the third treated water line. A flotation removing unit having an air levitation tank having a supply pipe to which air is supplied together with the pressurized water pressurized by the treated water to float the particulate matter contained in the treated water; The sludge discharged from the filter water, the sedimentation unit and the flotation removal unit and the filter unit, the sedimentation unit and the flotation unit are connected to each other via the air flotation tank and the fourth treated water line, and the treated water storage tank for storing a predetermined amount of the processed water discharged from the air flotation tank is discharged. It includes a sludge collection storage for storing, and having an SS measuring device for measuring the concentration of suspended solids in the treated water discharged through the outlet of the filter unit, the first treated water line in accordance with the suspended solids concentration measured by the SS A first two-way valve for converting the discharge path of the treated water into a first treated water dividing line connected to the air floating tank, and the second treated water dividing line includes the air floating in accordance with the suspended solids concentration measured by the SS measuring device. A second two-way valve for switching the discharge path of the treated water to a second treated water dividing line connected to the tank, and measured by the SS measuring device. Depending on the concentration of suspended solids in the treated water, the treated water with a high concentration of 25000 mg / l or more is supplied to the mixing tank connected through the first treated water line and treated through the sedimentation tank and the air flotation tank, and the medium concentration treatment of 10000 to 25000 mg / l The water is diverted by the second two-way valve of the second treatment water line connected to the mixing tank and the sedimentation probe, and is supplied to the air flotation tank without passing through the precipitation tank through the second treatment water branch line branched from the second treatment water line. And treated, and the low concentration treatment water of 5000 to 10000mg / l is the first treatment water branched from the first treatment water line is switched by the first two-way valve of the first treatment water line connected to the filter unit and the mixing irradiation It provides a wastewater treatment apparatus characterized in that the feed through the branching line and the air flotation tank without passing through the mixing tank and the settling tank is treated.

Preferably, the filter unit has an upper housing having an inlet for introducing waste water, a lower housing having an outlet for treating water and a sludge outlet for discharging filtered foreign matter, a lid covering the open upper portion of the upper housing, and the upper housing. , The lower housing includes a filtering member having a mesh of a predetermined size in the inner space of the top and bottom.

Preferably, the mixing tank is connected to the first treatment water line, the processing water is introduced, having a first stirring blade that is rotated by the first stirring motor, a flash mixing tank into which a predetermined amount of flocculant is injected, and vertical bulkhead And a flocculation tank in communication with the flash mixing tank through a connection hole formed therein, and having a second stirring blade which is driven to rotate by a second stirring motor.

Preferably, the settling tank is provided with an inclined surface inclined at a predetermined angle on the bottom surface of the precipitate is precipitated.

Preferably, the settling tank is rotated by a belt member having a plurality of scratch members so as to guide the guided discharge of the deposits deposited on the bottom surface to the sludge discharge port side, and circulating the belt member in one way in an endless orbital manner. It has a plurality of roll members to be driven.

Preferably, the air flotation tank has a suction pipe for forcibly sucking and discharging the treated water removed by floating the foreign matter at the bottom thereof.

Preferably, the air flotation tank has a floating foreign matter collection unit that is collected by overflowing the floating foreign matter suspended in the water surface on one side of the top.

Preferably, the air flotation tank is provided with a stirring blade rotated by a third stirring motor so that mixing between the flocculant and the treated water is introduced into a certain amount.

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Preferably, the filter unit, the mixing unit, the settling unit, the flotation removal unit, the treatment water storage tank and the sludge collection storage tank is mounted on the mounting portion of the vehicle.

According to the present invention, the filter unit for filtering the foreign matter contained in the waste water, a mixing unit for growing a particle by putting a certain amount of flocculant into the mixing tank, a precipitation unit for precipitating the precipitate in which the particles are grown, and treated water Floating water at the site of the pollution source where waste water is generated by having a flotation removal unit for floating and removing particulate matter contained in the wastewater, and a treatment water storage tank for storing the treated water discharged and treated and a sludge collection storage tank for collecting and storing sludge. It is possible to quickly and easily carry out the purification process, and it is impossible to introduce a large-scale wastewater treatment facility, and it is possible to purify the wastewater at the site where it is difficult to install the site, thereby preventing secondary pollution by wastewater. Gets

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

1 is a schematic plan view showing a wastewater treatment apparatus according to a preferred embodiment of the present invention, Figure 2 is a left side view showing a wastewater treatment apparatus according to a preferred embodiment of the present invention, Figure 3 is a preferred view of the present invention 4 is a right side view showing a wastewater treatment apparatus according to an embodiment, and FIG. 4 is a flowchart of treating wastewater in a wastewater treatment apparatus according to a preferred embodiment of the present invention.

Apparatus 100 according to a preferred embodiment of the present invention, as shown in Figures 1 to 4, the filter unit 110, mixing unit 120, sedimentation unit 130, flotation unit 140, treatment water storage tank 150 and the sludge collection reservoir 160.

The filter unit 110 is provided with a filtration member 112 in the internal space in which waste water is forced into the waste water source through the inflow pump 111, through the inlet 113 connected to the discharge side of the inlet pump 111. The internally introduced waste water is filtered with no power as the built-in filtration member 112, and the treated water filtered to remove the foreign matter contained in the waste water is discharged to the post process through the outlet 114.

As shown in FIG. 5 (a) and (b), the filter unit 110 has an upper housing 112 a having an inlet 113 through which waste water is introduced, and a lower housing having an outlet 114 through which treated water is discharged. By including a filter 112 having a mesh of a predetermined size in the inner space of the upper and lower housings, the upper and lower housings are vertically combined, including a cover 112c covering the open upper portion of the upper housing 112a, The wastewater forcibly introduced through the inlet 113 is included in the wastewater while swirling through the inside of the cylindrical filtration member 112 in a vortex, and foreign matter having a size larger than the mesh size of the filtration member 112 is filtered. While remaining without passing through the member is discharged through the sludge discharge reservoir 115 in communication with the sludge collection storage 160 to be described later is collected and stored in the sludge collection storage 160, while the mesh size of the filter member 112 production The foreign matter having a silver size is discharged to the mixing tank 121 side together with the treated water through the discharge port 114.

Here, since the filter unit 110 filters the wastewater being forced into the centrifugal force filter method, no separate power is required, and the installation of the adjacent member and the facility maintenance management are easy, as well as the filtering member after disassembly of the cover 112c. 112) can be replaced easily and quickly, which is convenient for use.

The mixing unit 120 is connected to the outlet 114 of the filter unit 110 and the first treatment water line 121 through the mixed treatment water filtered in the filter unit 110 is filled with a predetermined amount By including the tank 122, a certain amount of flocculant is introduced into the mixing tank 122 in which the treated water is filled in a predetermined amount to grow particles of foreign matter remaining in the treated water to a certain size.

As shown in FIG. 6, the mixing tank 122 is connected to the first treatment water line 121 to allow the treatment water to flow therein, and to allow the first stirring blade 124a to be rotated by the first stirring motor 124. Flash mixing tank (122a) to form a floc by mixing the injected flocculant with the treated water in a short time, and through the connecting hole (123a) formed through the vertical partition 123, the flash mixing tank Flockculation tank (Flocculation) having a second stirring blade (125a) is connected in communication with the second stirring motor (125) and rotated by the second stirring motor (125) to grow the microfloc grown in the flash mixing tank into large floctable particles that can be settled. Tank (122b).

Here, the flash mixing tank 122a is connected to a coagulant tank 126 in which a liquid or powdered coagulant is stored and a coagulant supply line 126a, and a coagulant supply pump member 126b is connected to the coagulant supply line 126a. By forming a small floc by the binding between the foreign particles contained in the treated water introduced into the flash mixing tank (122a), and to make the formed large flocs larger and heavier large flocs to settle The flocculant is added to give.

In this case, the flash mixing tank 122a is preferably provided with a tank size having a relatively smaller internal volume than the flocculation tank 122b.

The flocculant added to the mixing tank 122 is mainly used by employing metal hydrate to neutralize and adsorb organic and inorganic pollutants, but is not limited thereto and may vary depending on the type of waste water to form floc particles.

In addition, the input amount of the flocculant introduced into the mixing tank 122 may be appropriately changed according to the time to be introduced into and stay in the mixing tank 122 and the time to be stirred by the first and second stirring motors 124 and 125.

The precipitation unit 130 is connected to the flocculation tank 122b and the second treatment water line 131 of the mixing tank 122 by the flash mixing tank 122a and the floc of the mixing tank 122. It is provided with a settling tank 132 is filled with the treated water containing the floc particles so as to pass through the curation tank (122b) to precipitate the grown particles.

The bottom surface of the sedimentation tank 132 is provided with an inclined surface 132a so that the sediment is gradually inclined toward one side and the sediment is collected to one side, and the sludge collection storage tank 160 which describes the sediment at the bottom of the inclined surface 132a will be described later. Sludge discharge port 133 is provided to discharge to the side, and the sludge discharge port 133 is provided with a valve member (133a) to open and close the discharge flow path.

And, the discharge side of the sedimentation tank 132 is provided with a partition wall 134 so that only the upper treatment water in which the sediment is settled to the discharge side.

In addition, the sedimentation tank 132, as shown in Figure 7, the belt member 136 having a plurality of scratching members (136a) so as to guide and discharge the sediment deposited and loaded on the bottom surface to the sludge discharge port 133 side ) And a plurality of roll members 135 which are rotationally driven by the motor member to circulate the belt member 136 in one way in an endless track manner.

The floating removal unit 140 is connected to the first and second treated water branch lines 121a and 131a branched from the first and second treated water lines 121 and 131, and the treated water filtered by the filter unit 110. Treatment water containing particles introduced or grown in the mixing tank 122 is introduced, the air flotation tank is connected to the settling tank 132 and the third treatment water line 141 through which the treated water in which the sediment is settled. 142.

As shown in FIG. 8, the air floatation tank 142 is provided with a pressurized water pressurized by the pressure pump 144 and a supply pipe 143 to which air is supplied, and the pressure pump 144. The pressurized tank 145 having a pressure gauge 145a for pressurizing the treated water flowing from the first and second treated water dividing lines 121a and 131a and the third processing line 141 to a predetermined strength and Is connected, the pressure tank 145 is connected to the air compressor 146 receives the compressed air, the supply pipe 143 is connected to the pressure tank 145 via a discharge line having a flow meter (145b). As a result, the treated water introduced into the pressure tank 145 is supersaturated while staying in the pressure tank for about 10 to 30 seconds under a high pressure of 4.2 to 6.3 kg / cm 2 generated by the pressure pump.

In addition, when pressurized water is introduced from the pressurized tank into the air levitation tank at atmospheric pressure, a fine bubble of an average particle diameter of 50 to 70 μm or less occurs due to a sudden decrease in pressure, and such bubbles are formed in the air levitation tank 142. In addition to the foreign matter, the floating and colloidal particles are combined and floated.

Accordingly, the particulate matter contained in the treated water introduced into the air flotation tank 142 may be suspended and removed.

Here, it is preferable to add a predetermined amount of flocculant to the air flotation tank 142 to grow particles contained in the treated water, and to the third stirring motor 149 to smoothly mix the flocculant and the treated water. It is preferable to have a third stirring blade (149a) which is rotated by the drive.

In addition, the bottom of the air flotation tank 142 is provided with a suction pipe 147 forcibly sucking out the treated water to discharge the treated water so as to externally discharge the treated water removed by floating the foreign matter, the air flotation tank ( The upper one side of the 142 is provided with a floating foreign matter collecting unit 148 is collected by the suspended suspended foreign matter, the floating foreign matter collected in the floating foreign matter collection unit 148 is discharged to the sludge collection storage tank 160. do.

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The treatment water storage tank 150 is connected to the air flotation tank 142 and the fourth treatment water line 151 to store a predetermined amount of the treated water discharged from the air flotation tank 142 and finally discharged. The treated water stored in the water storage tank 150 may be discharged to the water source and recycled.

The sludge collection storage tank 160 is to collect and store the sludge discharged from the filter unit 110, sedimentation unit 130 and flotation removal unit 140.

The sludge collection and storage tank 160 is connected to the sludge discharge port 115 provided in the lower housing 112b of the filter unit 110 is filtered by the filter member 112 and the foreign matter remaining in the filter unit. Collect and store the collected and connected to the other sludge discharge port 133 provided on the bottom bottom of the settling tank 132 is collected on the bottom surface of the settling tank 132 and collected and stored to one side, the air It is connected to the floating foreign matter collection unit provided on one side of the upper side of the floating tank 142 to collect and store the suspended foreign matter, and then discharged to the outside after a predetermined time.

In addition, the first treatment water line 121 connecting the filter unit 110 and the mixing tank 122, and the second treatment water line 131 connecting the mixing tank 122 and the precipitation tank 132. ) Is provided with a measuring device for measuring the concentration of suspended solids in the treated water discharged after the filtration treatment in the filter unit 110, and connected to the air flotation tank 142 according to the measured suspended solids concentration in the measuring device A first two-way valve 101 and a second two-way valve 102 are respectively provided to switch the discharge path of the treated water to the first treated water divider line 121a or the second treated water divider line 131a.

By the switching operation of the first and second two-way valves 101 and 102, the treatment water supply and the first treatment water branch line 121a or the first treatment water line 121 or the second treatment water line 131 are provided. The treatment water supply through the second treatment water line 131a is varied according to the concentration of the treatment water.

In addition, the filter unit 110, admixture unit 120, sedimentation unit 130, flotation removal unit 140, treated water storage tank 150 and sludge collection storage tank 160 is a driving operation, such as trucks, towers Since the vehicle 109 is mounted on the mounting unit 109a of the vehicle 109, the waste water can be purified after moving to a pollution source where the waste water is generated.

The sludge collection storage tank 160 in which the sludge discharged from the filter unit 110, the precipitation unit 130, and the flotation removing unit 140 is collected and stored is disposed on the mounting unit 109a, and the sludge collection storage tank 160 is disposed. ), It is preferable to arrange the inflow pump 111, the filter unit 110, the mixing unit 120, the precipitation unit 130, the flotation unit 140 and the treated water storage tank 150 to be adjacent to each other. Do.

The wastewater treatment process using the wastewater treatment apparatus 100 having the above-described configuration may selectively process wastewater according to the concentration of the wastewater. First, the wastewater is forced into the filter unit 110 from the wastewater source through an inflow pump. The introduced waste water passes through the filtration member 112 provided in the filter unit 110, and foreign substances having particles of a predetermined size or more are removed and remain, and the filtered water is discharged to a later process through the outlet 114. will be.

At this time, by measuring the concentration of suspended solids (Suspended Solid) of the treated water discharged through the outlet 114 as an SS measuring device, if the measured value is more than 25000mg / l is determined as a high concentration, if the concentration is 10000 to 25000mg / l Judgment is made at low concentration of 5000 to 10000 mg / l.

Accordingly, when the suspended solids concentration of the treated water is determined to be high concentration of 25000 mg / l or more, as shown in FIG. 9 (a), the treated water filtered by the filter unit is a mixing tank 122, a settling tank ( 132) and the bar is continuously processed through the air flotation tank 142, the high concentration of treated water is introduced into the mixing tank 122 connected through the first treatment water line 121 is filled in a predetermined amount, the mixing tank Particles of foreign matter remaining in the treated water are grown to a certain size by the flocculant introduced into the 122.

That is, in the flash mixing tank 122a of the mixing tank 122, the treated water is mixed with the flocculant in a short time to form a floc, and is adjacent to the adjacent flocculation tank 122b. The microflocs contained in the incoming treated water are grown into large floc particles to settle.

Subsequently, since the treated water having foreign matter grown as large floc particles in the mixing tank 122 flows into the settling tank 132 through the second treated water line 131, the foreign matter included in the treated water is settled in the settling tank. Slowly settled to sink to the bottom surface of 132, the precipitated foreign matter is discharged through the sludge outlet 133 connected to the sludge collection reservoir 160.

In addition, the treated water precipitated in the settling tank 122 is introduced into the air flotation tank 142 connected through the third treated water line 141, and the foreign matter contained in the treated water by the dissolved air flotation method. Float to remove debris.

That is, the treated water of the settling tank 122 is pressurized by a pressure of a certain intensity by the pressure pump 144 and the pressure tank 145, the pressurized treated pressurized water is compressed air by the air compressor 146 In addition, when discharged through the supply pipe 143 provided at the bottom of the air flotation tank 142, as the pressurized water flows into the air flotation tank of the atmospheric pressure state, a fine bubble occurs due to a sudden decrease in pressure, such bubbles Floating or floating with the foreign matter in the air flotation tank 142 and floating in the colloidal state is to float and remove the particulate matter contained in the treated water introduced into the air flotation tank 142. .

In addition, the treated water to remove the foreign matter in the suspended material is temporarily stored in the treated water storage tank 150 connected through the air flotation tank 142 and the fourth treated water line 151 can be recycled to be discharged to the water. .

On the other hand, if the suspended solids concentration of the treated water discharged from the filter unit is determined as a medium concentration of 10000 to 25000mg / l, as shown in Figure 9 (b), the treated water filtered in the filter unit is settling tank 132 It is processed while passing through the mixing tank 122 and the air floating tank 142 without passing through.

That is, the treated water of medium concentration is supplied into the flash mixing tank 122a of the mixing tank 122 connected through the first treatment water line 121 to be mixed with the flocculant in a short time to form flocs. In addition, the microflocs included in the treated water flowing into the adjacent flocculation tank 122b are grown into large floc particles to be precipitated.

Subsequently, the treated water having the foreign matter grown to the large floc particles in the mixing tank 122 is the second treated water branch by the switching operation of the second two-way valve 102 provided in the second treated water line 131. The treated water is supplied to the air flotation tank 142 through the line 131a to float the foreign matter contained in the treated water by the dissolved air flotation method to remove the foreign matter.

The treated water in which the particles of foreign matter are grown in the mixing tank 122 is pressurized by the pressure pump 144 and the pressure tank 145 at a predetermined strength, and the pressurized pressurized water is supplied to the air compressor 146. When the air is discharged through the supply pipe 143 provided at the bottom of the air floatation tank 142 together with the compressed air, pressurized water flows from the pressurized tank into the air floatation tank at atmospheric pressure, and thus fine bubbles are generated due to a sudden decrease in pressure. In addition, these bubbles float together with foreign matter in the air flotation tank 142 and float together with particles in a colloidal state to float and remove the particulate matter contained in the treated water introduced into the air flotation tank 142. You can do it.

In addition, the treated water to remove the foreign matter in the suspended material is temporarily stored in the treated water storage tank 150 connected through the air flotation tank 142 and the fourth treated water line 151 can be recycled to be discharged to the water. .

And, if the concentration of suspended solids in the treated water discharged from the filter unit is determined to be low to 5000 to 10000mg / l, as shown in Figure 9 (c), the treated water filtered in the filter unit is a mixing tank ( 122) is processed while passing directly to the air flotation tank 142 without passing through the settling tank 132.

That is, the low concentration of the treated water is supplied to the air flotation tank 142 through the first treated water dividing line 121a by the switching operation of the first two-way valve 101 provided in the second treated water line 121. The foreign matter contained in the treated water is suspended by the dissolved air flotation method to remove the foreign matter.

The treated water filtered out of the filter unit 110 is pressurized by the pressure pump 144 and the pressure tank 145 at a predetermined strength, and the pressurized water is pressurized by the air compressor 146. When the air is discharged through the supply pipe 143 provided at the bottom of the air flotation tank 142 together with the compressed air, pressurized water flows from the pressurized tank into the air flotation tank at atmospheric pressure, and thus fine bubbles are generated due to a sudden decrease in pressure. Such bubbles float together with foreign matter or colloidal particles in the air flotation tank 142 to float and remove the particulate matter contained in the treated water introduced into the air flotation tank 142. It can be.

In addition, the treated water to remove the foreign matter in the suspended material is temporarily stored in the treated water storage tank 150 connected through the air flotation tank 142 and the fourth treated water line 151 can be recycled to be discharged to the water. .

The filter unit 110, the mixing unit 120, the precipitation unit 130, the flotation removing unit 140, the treated water storage tank 150, and the sludge collection storage tank 160 may be a vehicle such as a truck or a truck. By mounting on the mounting unit 109a, it is possible to move quickly to the pollution source where the waste water is generated, and to process the waste water at the site where the waste water is generated, thus securing the site cost and site for installing the waste water treatment device. It is possible to reduce the cost and to treat waste water directly even in a harsh environment where no waste water treatment facility is installed.

While the invention has been shown and described with respect to particular embodiments, it will be understood that various changes and modifications can be made in the art without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

1 is a schematic plan view showing a wastewater treatment apparatus according to a preferred embodiment of the present invention.

2 is a left side view showing a wastewater treatment apparatus according to a preferred embodiment of the present invention.

3 is a right side view showing a wastewater treatment apparatus according to a preferred embodiment of the present invention.

4 is a flow chart for treating wastewater in a wastewater treatment apparatus according to a preferred embodiment of the present invention.

5 is a view showing a filter unit employed in a wastewater treatment apparatus according to a preferred embodiment of the present invention.

(a) is a whole perspective view, (b) is a cross-sectional perspective view.

6 is a block diagram showing a mixing unit employed in the wastewater treatment apparatus according to a preferred embodiment of the present invention.

Figure 7 is a block diagram showing a sedimentation portion employed in the wastewater treatment apparatus according to a preferred embodiment of the present invention.

Figure 8 is a block diagram showing a flotation removal unit employed in the wastewater treatment apparatus according to a preferred embodiment of the present invention.

9 is a process flow diagram according to the concentration of the treated water in the wastewater treatment apparatus according to a preferred embodiment of the present invention,

(a) is the case of high concentration, (b) is the case of medium concentration, and (c) is the case of low concentration.

Description of the Related Art [0002]

110 filter unit 112 filtration member

112a, 112b: upper and lower housing 114: outlet

120: mixing unit 121: first treatment water line

122: mixing tank 124, 125: first and second stirring motor

130: sedimentation unit 131: second treatment water line

132: sedimentation tank 140: floating part

141: third treatment water line 142: air flotation

143: supply pipe 144: pressure pump

145: pressure tank 146: air compressor

150: treated water storage tank 160: sludge collection storage tank

Claims (10)

In the apparatus for treating waste water, A filter member having a filtration member for filtering the wastewater introduced through the inlet, and having a discharge port through which the filtered water is discharged, and filtering the foreign matter contained in the wastewater; A mixing unit connected to the outlet through the first treatment water line and having a mixing tank in which treated water is introduced and filled therein, and adding a coagulant in the mixing tank to grow particles remaining in the treated water; A precipitation unit which is connected through the mixing tank and the second treated water line and has a precipitation tank filled with the treated water of the mixing tank to fill therein to precipitate the precipitate in which the particles are grown; Any one of the filter unit, the mixing tank and the settling tank is connected to the first and second treated water branch lines branched from the first and second treated water lines, and has a pressure pump connected to the settling tank and the third treated water line. A flotation removing unit having an air levitation tank having a supply pipe to which air is supplied together with the pressurized water pressurized by the treated water to float the particulate matter contained in the treated water; A treated water storage tank connected to the air floatation tank and a fourth treated water line and storing a predetermined amount of the treated water discharged after being finally processed by the air floatation tank; And a sludge collection storage tank for collecting and storing sludge discharged from the filter unit, the settling unit and the floating removing unit, It is provided with an SS measuring device for measuring the concentration of suspended solids in the treated water discharged through the outlet of the filter unit, The first treatment water line includes a first two-way valve for switching the discharge path of the treatment water to a first treatment water branch line connected to the air flotation tank according to the suspended matter concentration measured by the SS measuring instrument, and the second treatment. The water distributor line includes a second two-way valve for switching the discharge path of the treated water to a second treatment water branch line connected to the air flotation tank according to the suspended solids concentration measured by the SS measuring instrument. Depending on the concentration of suspended solids in the treated water measured by the SS measuring device 25000mg / l or more high-density treated water is supplied to the mixing tank connected through the first treatment water line is treated through the settling tank and air flotation tank, 10000 to 25000mg / l of the concentrated treatment water is routed by the second two-way valve of the second treatment water line connected to the mixing tank and the sedimentation irradiation through the second treatment water branch line branched from the second treatment water line. It is supplied and treated as an air flotation tank without passing through the settling tank, The low concentration treatment water of 5000 to 10000mg / l is routed by the first two-way valve of the first treatment water line connected to the filter unit and the mixing irradiation, and through the first treatment water branch line branched from the first treatment water line. Waste water treatment apparatus, characterized in that supplied to the air flotation tank and treated without passing through the mixing tank and the settling tank. According to claim 1, wherein the filter unit has a lower housing having an upper inlet having an inlet through which waste water is introduced, a discharge port through which treated water is discharged, and a sludge outlet through which filtered foreign matter is discharged, and a cover covering an open upper part of the upper housing. And a filtering member having a mesh of a predetermined size in the inner space in which the upper and lower housings are vertically combined. The flash mixing tank of claim 1, wherein the mixing tank has a first stirring blade which is connected to the first treatment water line and flows in the treatment water, and is driven by a first stirring motor, and into which a certain amount of flocculant is added. And a flocculation tank in communication with the flash mixing tank through a connection hole formed in a vertical bulkhead and having a second agitating blade which is driven to rotate by a second agitating motor. According to claim 1, wherein the sedimentation tank is a wastewater treatment apparatus, characterized in that the bottom surface on which the precipitate is settled inclined at a predetermined angle. According to claim 1, wherein the settling tank is a belt member having a plurality of scratching members to guide the guided discharge of the sediment deposited on the bottom surface to the sludge discharge port side, and the motor member to circulate the belt member in one way in an endless track manner Waste water treatment apparatus comprising a plurality of roll members rotated by. The wastewater treatment apparatus according to claim 1, wherein the air flotation tank has a suction pipe for forcibly sucking the treated water removed by floating the foreign matter at the bottom thereof and then externally discharging it. The wastewater treatment apparatus according to claim 1, wherein the air floatation tank has a floating foreign matter collecting unit for collecting floating foreign matters suspended on the water surface on one side of the upper side. The wastewater treatment apparatus according to claim 1, wherein the air flotation tank includes a stirring blade which is driven by a third stirring motor to allow mixing between the flocculant introduced into the inside and the treated water. delete The wastewater treatment apparatus of claim 1, wherein the filter unit, the mixing unit, the settling unit, the flotation removing unit, the treatment water storage tank, and the sludge collection storage tank are mounted on a vehicle mount.

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