KR100639266B1 - Device of twice continual deposition treating and its method - Google Patents

Abstract

An equipment and a method for twice continual settling which improve settling efficiency by enlarging and solidifying ionic materials and particles and reduce installation cost of treatment facilities by doubly separating a sediment are provided. A twice continual settling equipment comprises: a first settling tank(10); an inflow pipe(11) which is connected to an outer portion of the first settling tank to flow wastewater or polluted water into the first settling tank; a first deep plate(21) installed at an inner side of the first settling tank to change an inflow direction of wastewater or polluted water; a second settling tank(30) installed at an inner side of the first deep plate to change the inflow direction of wastewater or polluted water; a second deep plate(23) installed at an inner side of the second settling tank to change the inflow direction of wastewater or polluted water; a weir channel(41) integrally formed on an outer portion of the second deep plate to collect treated water from which a sediment is separated; a discharge pipe(40) projected from one side of the weir channel to an outer side of the first settling tank to discharge treated water; and a sludge drawing pipe(50) connected to a lower portion of the first settling tank to move settled sludges.

Description

Twice Continual Deposition Treating And its Method

1 is a whole system configuration state for manufacturing coarse aggregate and crushed sand containing a conventional continuous sedimentation treatment device twice.

Figure 2 is a cross-sectional configuration of the two consecutive sedimentation treatment apparatus according to the present invention.

Figure 3 is a plan configuration state of the two consecutive sedimentation treatment apparatus according to the invention.

Figure 4 is a plan view of the lower portion of the processing vessel of the two consecutive sedimentation treatment apparatus according to the present invention.

Figure 5 is an overall configuration state for performing a continuous sedimentation treatment method applied to two consecutive sedimentation treatment apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

10. 1st precipitation tank 11. Inflow pipe

12. Settling space 13. Baffle plate

21,23. 1st and 2nd deep plate 30. Secondary precipitation precursor

40. Outfall 41. Wear channel

50. Sludge drawing pipe 60. Scraper part

62. Scraper 110. Settler

120. Flow control tank 121. Sewage water pump

131-133. 1st to 3rd stirring tanks 140. Coagulation and sedimentation tanks

150. Discharge tank

The present invention relates to a device for neutralizing, reacting, flocculating and sedimenting sewage water containing COD, acid, alkali, and other turbidity substances. More specifically, the present invention relates to acids, alkalis, such as acid mine wastewater, lime water, and the like. Or it relates to a two-stage continuous sedimentation treatment apparatus for discharging treated water by enlarging, solidifying and sedimenting ionic substances and particulate components from the waste water containing turbid suspended matter and separated from the supernatant.

A system for producing coarse aggregate and crushed sand using a conventional sediment treatment apparatus includes a first vibration screen 62 for filtering stone powder having a first size, as shown in FIG. 1; A first crusher (61) for crushing the stone powder remaining on the first vibration screen (62) and putting it on the second vibration screen (63); A second vibrating screen (63) for filtering out the second-sized stone powder among the stone powders broken through the first crusher; A spiral classifier 64 for outputting crushed sand passed through the first and second vibration screens 62 and 63; Water spraying means (68) for sprinkling water on the crushed sand passing through the first and second vibration screens (62, 63); A settling tank (65) for storing water classified by the classifier and containing fine powder; A concentrating tank (66) for storing the sludge discharged from the settling tank (65); It consists of a filter press 67 for molding and discharging the sludge concentrated in the concentration tank 66.

However, the conventional sediment treatment equipment is sludge is settled by solidifying or settled to solidify on the lower inner wall of the sedimentation tank to solidify and accumulate, the sludge discharge efficiency is left unimpeded or not separated from the waste water, sludge discharge efficiency is reduced, Wastewater was not stirred well with the sludge sedimentation efficiency was also a problem.

Therefore, the technical problem to be achieved in the present invention is to improve the sedimentation efficiency by agitation of effluent and flocculant, maximizing the residence time per unit volume of the sedimentation tank to make the ionic materials and fine particles large and solid, The present invention provides a second continuous sedimentation treatment apparatus and a method for reducing the installation cost of a treatment plant by dividing the sediment into two stages in a volume and reducing the unit volume necessary for the sedimentation effect.

In order to solve the above technical problem, the second continuous sedimentation treatment apparatus of the present invention is a treatment apparatus for treating sewage water containing contaminants, comprising: a primary sedimentation tank 10; and the primary sedimentation tank 10 An inlet pipe 11 connected to the outside of the inlet to introduce the sewage water; and a first deep plate 21 installed inside the primary sedimentation tank 10 to change the inflow direction of the sewage water; and the first A secondary precipitation tank 30 installed inside the first dip plate 21 to induce secondary precipitation; and a second dip plate installed inside the secondary precipitation tank 30 to change the inflow direction of the sewage and turbid water; (23); and a wear channel 41 integrally formed at the outside of the second deep plate 23 to introduce the treated water into the discharge pipe; and a primary precipitation tank 10 at one side of the wear channel 41; Outflow pipe 40 protruding outward to discharge the treated water; and connected to the lower portion of the primary settling tank 10 to draw out the settling sludge It is characterized by comprising a sludge drawing pipe (50).

The inlet pipe 11 is connected to the primary settling tank 10 at a predetermined angle to provide a continuous sedimentation treatment device, characterized in that the incoming sewage and turbid water to form a vortex.

Baffle plate 13 is formed on the outer side of the first deep plate 21 of the portion in which the filthy water flows, thereby providing a continuous sedimentation treatment device, characterized in that the filthy water flows into the dispersion. .

A reducer 71 is installed at an upper side of the processing vessel, and a rotation shaft 72 is connected to a lower portion of the reducer to penetrate the center lower portion of the secondary sedimentation tank 30, and at the inner lower center of the primary sedimentation tank 10. The scraper unit 60 is provided with two continuous sedimentation treatment apparatus characterized in that the connection.

 One or more anti-clogging blades 73 are attached to the outer side of the lower rotating shaft to provide a second continuous sedimentation treatment apparatus, which prevents the lower portion of the secondary sedimentation tank from being blocked.

On the other hand, sediment sludge treatment method, in the sedimentation sludge containing sedimentation method, the sedimentation sludge treatment step of naturally drying some sediment filtered from the sewage water flowing into the sedimentation tank 110; and the sedimentation sludge A flow rate adjusting step of uniformly pumping the supernatant passed through the treatment step into the chemical reaction line; and a stirring step of stirring a predetermined amount of filthy water in the flow rate adjusting step to a first settling tank; and the stirring step After the sedimentation and treatment of the mixed water, the supernatant is discharged and the sedimentation sludge is moved to the sedimentation tank 110; and the treated water flowing out of the sedimentation step is moved to the chemical tank and recycled or discharged into the chemical dissolved water. Characterized in that it comprises a recycling and discharge step.

The stirring step mixes and reacts the filthy water and sulfuric acid through the first stirring tank 131, and mixes and reacts the filthy water and caustic soda through the second stirring tank 132. The present invention provides a continuous sedimentation treatment method characterized by mixing and reacting soil and muddy water with a flocculant.

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

Figure 2 is a cross-sectional configuration of the sewage and wastewater treatment apparatus according to the present invention, Figure 3 is a plan view of the wastewater and wastewater treatment apparatus according to the present invention.

As shown in Figures 2 and 3, the second continuous sedimentation treatment apparatus according to the present invention is a device for treating the dirty water containing COD, acid, alkali, other turbidity causing substances, etc., the inlet pipe (11) By repetitively moving up and down by one or more dip plates while forming the vortex of effluent water flowing through the particles, particles such as suspended matter are precipitated and separated and moved through the sludge drawing pipe 50, and the treated water is discharged to the discharge pipe 40. It is made to flow through a separate.

The primary settling tank 10 corresponding to the body of the two-time continuous sedimentation treatment apparatus according to the present invention is provided. In the inner lower portion of the primary precipitation tank 10, a precipitation space 12 in which the solidified precipitate is precipitated is formed. The inner bottom of the primary sedimentation tank is formed to be inclined from the outside to the center so that the sediment is collected and discharged to the center.

The inflow pipe 11 is connected to the outside of the primary sedimentation tank 10 to introduce the filthy water. The inflow pipe 11 is connected to the primary sedimentation tank 10 to form a constant angle (a), so that the influent sewage water is introduced to form a vortex.

In other words, the inlet pipe 11 is formed in the tangential direction of the primary sedimentation tank 10 or connected at an oblique angle to the tangent of the primary sedimentation tank 10. The inflow pipe 11 does not introduce dirty water in a direction perpendicular to the tangential line of the primary settling tank 10, that is, to the tangent of the primary settling tank 10 in plan view.

A baffle board 13 is formed on the outer side of the first deep plate 21 where the waste water is introduced, so that the waste water flowing through the inflow pipe 11 is dispersed and introduced.

One or more dip plates are installed to separate the sediment by allowing the sewage and turbid water to form a vortex and repeat its descent and rise.

The first dip plate 21 is installed inside the primary sedimentation tank 10 and flows down while rising due to the formation of vortices. At this time, the vortex acts as a centrifugal force and a centripetal force, but forms a spiral vortex toward the center.

The upper portion of the first dip plate 21 is positioned as the upper height of the primary precipitation tank 10, and the lower portion of the first dip plate 21 is a predetermined height from the bottom (sedimentation space 12) of the primary precipitation tank 10. Are spaced apart. The introduced sewage and sewage water fall along the space between the inner wall of the primary settling tank 10 and the outer wall of the first dip plate 21 and then move upward in the lower portion of the first dip plate 21.

The secondary sedimentation tank 30 is installed inside the first deep plate 21 so that the inflow direction of the sewage and turbid water rises while forming a vortex and then descends. At this time, the vortex acts as a centrifugal force and a centripetal force, but forms a spiral vortex toward the center.

The upper part of the secondary precipitation tank 30 is lower than the upper height of the first dip plate 21, and the lower part of the secondary precipitation tank 30 is also lower than the lower height of the first dip plate 21. The introduced sewage and sewage water rises along the space between the inner wall of the first dip plate 21 and the outer wall of the secondary sedimentation tank 30, and then moves downward in the upper portion of the secondary sedimentation tank 30.

In the lower portion of the secondary settling tank 30, an inclined surface having a slope of 60 degrees or more is formed in a cone shape, and the precipitates are collected at the lower portion. A discharge pipe 31 for discharging the sediment to the hopper portion of the lower part of the primary precipitation tank is formed at the center lower portion of the inclined surface. A guide plate 22 is formed at the lower side of the secondary sedimentation tank to guide the sewage and turbid water so that it can rise by turning below the first deep plate.

The second deep plate 23 is installed inside the secondary sedimentation tank 30 so that the flow direction of the sewage and turbid water descends while forming a vortex and then rises. At this time, the vortex acts as a centrifugal force and a centripetal force, but forms a spiral vortex toward the center.

The upper portion of the second dip plate 23 is higher than the upper height of the secondary precipitation tank 30, and the lower portion of the second dip plate 23 is spaced apart from the lower slope of the secondary precipitation plate by a predetermined height. The introduced sewage and sewage water descends along the space between the inner wall of the secondary settling tank 30 and the outer wall of the second deep plate 23 and then moves upward in the lower portion of the second deep plate 23.

At this time, the moving and turbid water is reflected from the lower part of the second dip plate 23 to the inclined surface of the lower part of the primary precipitation tank, and the moving direction is changed to rise. The sedimentary particles are precipitated and collected at the center lower portion of the lower slope of the secondary precipitation tank even when the effluent and the turbid water are moved by the second dip plate 23.

The baffle plate 13 and the first and second deep plates described above are connected and supported by a connecting table (not shown), respectively. The connecting rods are installed at regular intervals in the form of rods that will not interfere with the flow of fluid.

The wear channel 41 is integrally formed on the outside of the second deep plate 23 and collected to discharge the treated water from which the sediment is separated. The wear channel 41 is formed on the upper side of the space between the secondary settling tank 30 and the second deep plate 23, and the upper supernatant which rises to the inner upper part of the inclined plate 30 and the second deep plate 23. Overflowed.

The discharge pipe 40 is connected to one side of the wear channel 41 and protrudes to the outside of the primary sedimentation tank 10 to collect and discharge the supernatant water flowing into the wear channel 41.

On the other hand, the inner lower portion of the primary settling tank is formed with a scraper to rotate in connection with the reducer. The scraper collects the sediment accumulated on the bottom of the inclined surface of the primary sedimentation tank and discharges it to the outside.

The reducer 71 is installed at one upper side of the primary settling tank, and a rotating shaft 72 is connected to the lower portion of the reducer to penetrate the lower center of the secondary settling tank. The scraper part 60 is connected to the inner lower center of the primary settling tank 10.

In the embodiment of the scraper 60, as shown in Figure 4, the connecting rod 61 is formed at the lower end of the rotary shaft cross, a plurality of rectangular scraper 62 is attached to the lower portion of each connecting rod. Figure 4 shows the planar state of the lower part of the primary sedimentation tank of the two consecutive sedimentation treatment apparatus according to the present invention.

The connecting rod 61 is preferably formed to have a long and short length of the connecting rod facing each other to scratch the lower inner side of the primary precipitation tank. The connecting rod is attached to the lower end of the rotating shaft so as to protrude four in all directions as shown in Figure 4, of course, the number is not limited. Connecting rods and connecting rods respectively connect the support wires 63 to pull the connecting rods of each other so that the rotation force is evenly distributed to the connecting rods, and the connecting rods are prevented from bending.

The scraper 62 is made of a rubber material at the bottom thereof to scrape the bottom of the processing container well. The bottom material of the scraper is not limited to the rubber material, and other means for scraping the bottom of the processing container are possible.

One or more anti-blocking blades 73 are attached to the outer side of the rotation shaft located in the discharge pipe 31 at the lower side of the secondary precipitator to prevent the discharge pipe of the slope from being blocked.

The sludge drawing pipe 50 is connected to the lower part of the primary settling tank 10. The sludge drawing pipe moves the sediment which is precipitated directly to the bottom of the primary sedimentation tank and the sediment discharged through the discharge pipe of the slope of the secondary sedimentation tank to the outside of the treatment vessel.

Referring to FIG. 5, a treatment method to which the second continuous sedimentation treatment apparatus according to the present invention made as described above is applied is as follows.

5 is an overall configuration state for carrying out the treatment method applied to the two consecutive sedimentation treatment apparatus according to the present invention.

First of all, the first step is to settle the sediment, which is a step of naturally drying the sediment filtered from the sewage water introduced into the sedimentation tank 110.

The sedimentation tank 110 is a water tank in which sand and other contaminant particles are precipitated and removed, and the supernatant water passing through the sedimentation tank 110 is in a state in which some suspended solids are removed. The supernatant from which some of the suspended solids are removed enters the flow control tank. The drawn sludge is naturally dried and treated separately.

The next step is to adjust the flow rate, buffering against rapid inflow flow fluctuations, and pumping the inflow water overflowed in the settling tank into the reactor by using a flow pump.

After passing through the immersion tank 110, the supernatant flowed to the flow adjustment tank 120 is moved. One or more pumps are installed in the flow adjusting tank 120 to adjust the flow rate flowing into the reaction tank through the flow pump 121.

The next step is the agitation step. In the flow rate adjustment step, the pump pumps a certain amount of dirty water and installs three line mixers, each of which is internally screw-processed, on a pipe connected by two consecutive sedimentation treatment devices. The chemical inlet is attached to the front end of the inlet to allow the influent wastewater and the injected chemical to stir and react.

In the stirring step, the saturated water and sulfuric acid are stirred through the first stirring tank 131, the saturated water and caustic soda are stirred through the second stirring tank 132, and the stirrer is mixed through the third stirring tank 133. Stir the turbid water and flocculant and move to the next step. 131a is a sulfuric acid tank, 132a is a caustic soda tank, and 133a is a polymer flocculant tank.

Stirring sulfuric acid and turbid water is to neutralize the turbid water by lowering the pH index by stirring acidic sulfuric acid with turbid water. The stirring of caustic soda and effluent water is to neutralize the effluent water by increasing the pH index by stirring alkaline caustic soda with effluent water. The stirring of the polymer flocculant and the fouling water is to agglomerate the microparticles in the neutralized fouling water by agitation of sulfuric acid and caustic soda to make them large and solid.

The stirring vessel is a conventional technique, in which several elements in the pipe convert the laminar flow fluid into turbulent fluid continuously in the lateral direction. The stirring tank is a device that effectively mixes two or more fluids, gases, and powders by causing continuous agitation during the passage of dirty water. Stirring tank is a device that can finely stir by dividing the fluid flow, changing the direction of the flow and changing the direction of the flow while continuously turning on the three roles of splitting, redirection and mixing during conveying in the pipe.

The next step is a precipitation step, after treating the mixed water moved in the stirring step by two consecutive sedimentation treatment devices, the supernatant is discharged and the settling sludge is moved to the sedimentation tank 110.

By repeatedly moving up and down by the one or more deep plates while the filthy water flowing through the inflow pipe 11 forms a vortex, the contaminants are separated and precipitated and moved to the sedimentation tank 110 through the sludge drawing pipe 50. , The treated water flows out into the discharge tank through the discharge pipe (40). 140 is a continuous sedimentation treatment device twice. See the precipitation step 2.

In more detail, the contaminated water containing COD, acid, alkali, and other turbidity causing substances is introduced into the primary settling tank 10 through the inlet pipe 11. When filthy water is introduced into the primary settling tank 10, the baffle plate 13 is dispersed into the space between the inner wall of the first settling tank 10 and the outer wall of the first dip plate 21.

Sewage water descends along the outer wall of the first dip plate 21 while forming a spiral vortex toward the center. Solid particles 101 are lowered into the settling space 12 below the primary sedimentation tank 10 by the load in the descending dirty water. At this time, the load of the large and solid particles is lowered because of the strength of the vortices than the rotational force, and the fine particles are rotated together with the dirty and turbid water without settling because of the strength of the vortices than their own load.

The filthy water descending along the outer wall of the first deep plate 21 rises along the outer wall while meeting the outer wall of the secondary precipitation tank 30 while the moving direction is changed in the lower portion of the first deep plate 21.

The filthy water which has risen along the outer wall of the guide plate 22 meets the lower part of the wear channel 41 while the moving direction is changed in the upper part of the secondary settling tank 30 along the outer wall of the second deep plate 23. Descend.

The filthy water rising along the outer wall of the second deep plate 23 rises into the second deep plate 23 while the moving direction is changed in the lower portion of the second deep plate 23. Particles in the water generated during this process are precipitated to the lower center of the inclined surface along the inner wall of the secondary precipitation gradient slope, and then discharged into the primary precipitation tank 10 through the discharge pipe 31. As the rotational force of the vortex weakens, the load of underwater particles is lowered and settled because of the strength of the vortex.

The solid precipitate lowered to the sedimentation space 12 and the sediment discharged below the secondary settling slope are moved to the sedimentation tank 110 through the sludge drawing pipe 50. The treated water 103 that rises into the second deep plate 23 flows into the wear channel 41 and flows out of the primary settling tank 10 through the discharge pipe 40.

In addition, while the reducer 71 operates to rotate, the scraper unit 60 that receives the rotational force of the rotating shaft 72 rotates. The scraper 62 of the scraper portion scrapes the bottom of the processing container so that deposits solidify on the bottom of the processing container and do not accumulate. As the rotating shaft rotates, the blockage preventing blade 73 also rotates so that the precipitate in the second settling tank discharged through the discharge pipe 31 is smoothly discharged into the settling space 12.

The next step is to recycle and discharge the treated water, which is to transfer the treated water from the settling stage to the chemical tank for recycling or discharge.

The treated water flowing out of the discharge pipe 40 of the primary settling tank 10 is collected in the discharge tank 150, and part of it is recycled as chemical dissolved water or discharged to the outside of the discharge tank 150.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are defined in the technical matters of the present invention on the basis of the principle that the inventor can appropriately define the concept of terms in order to explain the invention in the best way. It must be interpreted to mean meanings and concepts.

While the invention has been described and illustrated in connection with a preferred embodiment for illustrating the principles of the invention, the invention is not limited to the construction and operation as shown and described. Rather, it will be apparent to those skilled in the art that many changes and modifications to the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

As described above, the two-time continuous sedimentation treatment apparatus and method of the present invention can improve the sedimentation efficiency of the dissolved substances by largely solidifying the soluble substances and particles by stirring well the filthy water and the chemicals.

By forming a sedimentation space inside the treatment vessel into which the sewage water is introduced, and installing one or more deep plates to form an inclined surface on the inner deep plate, and connecting the sludge drawing pipe to the sedimentation space and the lower portion of the inclined surface, Depending on the rotational force of the vortex formed during the inflow of turbid water and the load of the generated particles, the sewage and turbid water can be separated into two to improve the removal efficiency of the dissolved particles.

By adding a deep plate and a secondary settling tank in a conventional settling tank type (primary settling tank type) to form a settling space, the treatment efficiency of the dissolved particles is improved. In addition, by installing a rotatable scraper on the inner bottom of the primary settling tank, it is possible to provide the effect that all the precipitate can be discharged without being accumulated in the bottom of the treatment vessel.

Claims (7)

In the continuous sedimentation treatment apparatus for treating the sewage water containing sediment, Primary Precipitation Tank (10); An inlet pipe 11 connected to the outside of the primary sedimentation tank 10 to introduce wastewater and muddy water; A first deep plate 21 installed inside the primary settling tank 10 to switch the inflow direction of the waste water; A secondary sedimentation tank (30) installed inside the first deep plate (21) to switch the inflow direction of the waste water; A second deep plate 23 installed inside the secondary sedimentation tank 30 to switch the inflow direction of the waste water; Were water channel 41 integrally formed on the outside of the second deep plate 23 to collect the treated water from which the sediment is separated; A discharge pipe 40 protruding from the one side of the wear channel 41 to the outside of the primary settling tank 10 to discharge the treated water; And Twice a continuous sedimentation treatment apparatus comprising a sludge drawing pipe (50) connected to the lower part of the primary settling tank (10) to move the settling sludge. The method according to claim 1, The inlet pipe 11 is connected to the primary sedimentation tank 10 at a predetermined angle, the continuous sedimentation treatment device, characterized in that the incoming sewage and turbid water to form a vortex. The method according to claim 1, Baffle plate (13) is formed on the outside of the first deep plate 21 of the site where the effluent water flows, so that the effluent turbidity is dispersed and introduced, characterized in that the two consecutive sedimentation treatment apparatus. The method according to claim 1, The reducer 71 is installed at one upper side of the primary settling tank, and a rotating shaft 72 is connected to the lower portion of the first settling tank to penetrate the center lower portion of the lower slope of the secondary settling tank 30, and Two times the settling processing apparatus, characterized in that the scraper portion 60 is connected to the inner lower center. The method according to claim 4, At least one blockage preventing blade (73) is attached to the outer side of the rotation axis of the lower slope of the secondary settling tank, characterized in that the two times the settling processing device to prevent the lower portion of the inclined plate. In the continuous sedimentation treatment method for treating the sewage water containing dissolved particles, A settling sediment treatment step of naturally drying some of the precipitates filtered from the sewage water flowing into the settling tank 110; A flow rate adjusting step of sending the supernatant superseded in the sedimentation precipitate treatment step to an equal flow rate; A stirring step of mixing the waste and muddy water sent in the flow rate adjusting step with chemicals and moving the waste and muddy water treatment device; A precipitation step of treating the mixed water moved in the stirring step by two consecutive sedimentation treatment apparatuses and then treating water to flow out and depositing the sedimentation tank 110; And And a process for recycling and discharging the treated water flowing out of the precipitation step to the chemical tank for recycling or discharge. The method according to claim 6, The stirring step is to stir the well and turbid water and sulfuric acid through the first stirring tank 131, and to stir the well and turbid water and caustic soda through the second stirring tank 132, and through the third stirring tank 133 Continuous sedimentation treatment method characterized by stirring the sewage water and flocculant.

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