KR200227263Y1 - Inclined settling tank for maximal osculation area - Google Patents

Abstract

The present invention relates to an inclined plate sedimentation tank which maximizes the contact area in the inclined plate sedimentation apparatus of the existing sedimentation basin. In particular, an electrolysis tank is installed at the rear end of the sedimentation basin to induce foreign matters having less sedimentation to settle again, thereby maximizing treatment efficiency. In particular, the sediment inclination plate is composed of three lattice-shaped three-stages of 135 degrees to induce maximum sedimentation efficiency with the smallest cross section.

In the wastewater treatment process by the present device, the treated water introduced into the reaction tank by the treated water inlet pipe 1 is subjected to the precipitation process by the inclined plates 11, 13, and 15 that are installed at uniform intervals. In the electrolysis tank 3, a coagulation sedimentation process is performed.

The positive and negative electrodes of the electrode plate 9 combine with the cations and anions in the water sludge in the process of moving to the upper part of the reactor through the aluminum electrode plates 9 staggered in the electrolysis tank 3. Agglomeration occurs to treat waste water.

Description

Inclined Plate Precipitator with Maximized Contact Area {Inclined settling tank for maximal osculation area}

Inclined plates were first used for the concentration, recovery or drainage of products by sedimentation in the fields of chemical industry and mining, but have also been used in water treatment and sewage treatment facilities since the 1960s. Such inclined plate sedimentation tanks were initially used as a concept of increasing the settling area, but recently they have been used as a tool for changing the sedimentation basin form through various sedimentation types and combinations.

Originally, inclined plate sedimentation tanks should theoretically install inclined plates in the sedimentation tank to shorten the sedimentation distance for suspended particles to settle and shorten the settling time, while increasing the effective settling area and increasing sedimentation efficiency per unit area. In practice, however, inadequate design and maintenance would, in theory, cause the flocs to be removed, of course, to flow through the settling effluent to the filter paper or to settle particles on the slope, which would worsen the water quality.

In particular, such deterioration efficiency and maintenance problems in the wastewater treatment plant where there is a shortage of skilled workers naturally avoid the use of inclined plate settler, and even remove the inclined plate that is already installed.

In addition, the electrolysis device is not very much applied to the field due to the problem of processing efficiency and construction cost so far, which is due to the lack of processing efficiency and the high cost of auxiliary equipment, especially a large number of electrode plates having a minimum unit area. There is a problem of maximizing the treatment efficiency by using the maximum treatment surface.

The wastewater treatment method using the conventional electrical principle is briefly described. First, the treated water to be treated in order to have a greater efficiency is introduced into a control tank, which is a pretreatment process, and then caustic soda, an inorganic coagulant, and an appropriate additive (NaCl, Na2so4). After putting the mixture and the like to adjust the conductivity is put into the reactor.

Waste water introduced into the reactor passes through the electrode plates to cause an electroaggregation reaction. The coagulation reaction is coagulation, floatation, and oxidation.

Double oxidation and coagulation are the most important reactions in the theory of wastewater treatment. Oxidation process involves the oxidation of iron in the form of metal in the positive electrode of the electrode plate to +2 or + trivalent ions. Oxygen (O2) is generated as the hydroxide ions (OH-) generated from the oxidized. Oxygen (O2) generated in this way is involved in indirect oxidation of organic materials, and at the same time, reduction occurs at the cathode of the electrode plate to generate hydroxide ions (OH-) under neutral conditions and hydrogen (H2) gas under acidic conditions. .

On the other hand, the metal ions eluted at the (+) electrode form a metal hydrate complex with a (+) charge under acidic or neutral conditions, depending on the pH conditions in the water, and a metal hydrate complex with a (-) charge under strongly alkaline conditions. Will form. Therefore, in general, the pH of the influent wastewater is operated under neutral or weakly acidic conditions. Therefore, the double layer compression is performed by electrically neutralizing the surface charges of the metal hydrate complex with (+) charge and the colloid (Colloid) with (-) charge. Coagulation by double layer compression causes organic matter to coagulate and precipitate.

To date, electrolytic baths and swash plate settling tanks have been operated as separate treatment tanks, which has the disadvantage of increasing the processing cost and increasing the maintenance cost.

The conventional precipitation ramp plate has a problem of maintaining the maximum surface area at the minimum unit area, and the electrolytic bath has a result of which the treatment efficiency is not satisfactory compared to the installation cost, so that technical problems need to be solved. It is becoming.

1 is a three-dimensional view showing the overall configuration of the present invention

Figure 2 is a perspective view of the incision of the reactor according to the present invention

** Description of symbols for the main parts of the drawing **

1: Treatment water inlet pipe 2: Inclined plate sedimentation tank

3: electrolysis tank 4: treated water outlet pipe

5: sludge discharge pipe 6: sludge storage tank

7: swash plate sedimentation bottom floor 8: overflow wear

9: electrode plate 10: upper frame

11: 1st inclination plate 12, 14: middle frame

13: 2nd inclined plate 15: 3rd inclined plate

16: lower frame

In order to achieve the above object, as a pretreatment step for removing particulate matter in wastewater at a pretreatment stage, the wastewater is temporarily stored in a control tank installed at a pretreatment stage, and caustic soda, inorganic coagulant, and pH are adjusted. Supply the solvent from the storage tank into the inflow control tank through the chemical injection pump.

It is important to install a small amount of agitator in the adjusting tank so that the supplied chemical and influent waste water are completely mixed.When the control panel recognizes the pH and conductivity of the waste water mixed through the pH meter and the conductivity meter, After stopping the operation, it is introduced into the reactor using a pump or the like.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention in more detail as follows.

1 is a three-dimensional view showing the overall configuration of the present invention, Figure 2 shows a perspective cutaway view of the reactor according to the present invention.

Waste water mixed with chemicals in the front end of the reactor is introduced into the gradient plate sedimentation tank (2), which is the main treatment device of the present invention, through the treated water inlet pipe (1) and undergoes the precipitation process.

The installation of the inclined plate settling tank (2) is made of high density polyethylene (Hige Density Polyethylene) excellent in corrosion resistance and wear resistance to prevent the intrusion of sulfides and microorganisms to have a semi-permanent life.

Inclined plate sedimentation tank (2) according to the present invention consists of a three-stage of grid shape to increase the precipitation efficiency step by step.

The lower part of the inclined plate settling tank 2 gave a gradient of about 3% to the bottom of the inclined plate settling tank 7 to collect and discharge the precipitated sludge to the outside so that the sludge was naturally collected in the sludge storage tank 6.

In order to maximize the role of the inclined plate sedimentation tank (2), the shape of the inclined plate was configured in the form of a lattice as shown in the detailed view of FIG. 2 and the angle of the lattice showed an optimal precipitation efficiency within 135 degrees.

The inclination plate is installed by the mounting frame 10, 12, 14, 16, but the combination of the inclination plate and the frame is preferably using a bolt nut or the like.

During the precipitation process in the inclined plate sedimentation tank (2), the treatment target water goes through the inclined plate, and the existing inclined plate does not meet the installation angle or weight of the inclined plate, so it does not endure water pressure, and the inclined plate is hesitant or broken. However, in order to prevent such an accident in the present design, the material of the inclined plate is made of high density polyethylene (Hige Density Polyethylene), which is light in weight, for stability.

The sludge generated from the inclined plate sedimentation tank (2) was removed by installing a machine such as a chain plate type in the existing sedimentation basin. However, in the present design, the sludge produced naturally by giving a constant gradient of about 3% to the bottom of the inclined plate sedimentation tank (2). After collecting the sludge storage tank (6) was discharged to the outside through the sludge discharge pipe (5).

Completed sedimentation treatment water is moved to the electrolysis tank (3) located in the rear end of the gradient plate settling tank (2).

Raw water to be introduced into the electrolysis tank 3 passes between the electrode plates 9 made of aluminum, which are staggered at uniform intervals, as shown in FIG. The electrode is combined with cations and anions in the water to generate sludge agglomeration by the above-mentioned electrical reaction principle, and these sludges are collected in the sludge storage tank 6 and discharged out through the sludge discharge pipe 5. .

Rather than supplying (+) and (-) alternately in the rectifier periodically to ensure smooth electrolysis, the electrode plate (9) is installed separately from the (+) and (-) poles. It is desirable to improve the processing efficiency, and the electricity supply to the electrode plate is simply made by connecting the current line in the rectifier installed outside the reactor.

In order to increase the contact area between the electrode plate 9 and the water, the electrode plate 9 was alternately installed. As shown in FIG. 2, the water flows upward through the installation electrode plate 9. The efficiency can be increased.

Fixing of the electrode plate 9 is fixed to the electrolytic bath using a rivet and then finished with silicon or the like.

As described above, the present invention is a device that maximizes the treatment efficiency by using a precipitation slope plate and an electrolysis tank, and minimizes the facility as the maximum treatment surface area is formed by using a plurality of slope plates having a minimum unit area in the wastewater treatment device. Of course, it has the effect of maximizing the treatment efficiency, and also by installing the electrolysis tank continuously in the rear stage can remove the foreign matters, etc. that can not be removed from the inclined plate settling tank to increase the treatment efficiency.

Claims (1)

The inclined plate settling tank 2 is provided with a treated water inflow pipe 1 for introducing wastewater to be treated, and an inclined plate for treating the introduced wastewater consists of three stages in a lattice form of about 135 degrees; The inclined plate sedimentation tank (2) bottom shape is installed with a gradient of about 3% of the inclined plate sedimentation tank bottom (7) to facilitate the collection of precipitated sludge; A sludge storage tank 6 and a sludge discharge pipe 5 for collecting and treating sludge generated in the inclined plate settling tank 2 and the electrolysis tank 3 are provided at the bottom of the electrolysis tank 3; The electrode plate 9 is inclined plate settling tank maximizing the contact area, characterized in that they are installed alternately to maximize the surface area of the electrical reaction