KR101216412B1 - Advanced treatment utility using high speed precipitation filting method and advanced treatment process using it - Google Patents

Abstract

PURPOSE: A rapid precipitation filtering type advanced treatment apparatus and an advanced treatment method using the apparatus are provided to maximize the efficiency of sludge treatment and to remove bad odor from the sludge. CONSTITUTION: A rapid precipitation filtering type advanced treatment apparatus includes an aeration bath(100), a first stirring bath(200), a second stirring bath(300), a precipitating bath(400), a filtering bath(500), a sludge transferring part(600), and a sludge exhausting part(700). The aeration bath includes an air diffuser(130). The first stirring bath includes a chemical introducing unit(240) and a first stirrer(230). A plurality of slanted plates is arranged in the precipitating bath. The upper parts and the lower parts of the slanted plates are alternately opened. The filtering bath is installed at the rear part of the precipitating bath. The sludge transferring part transfers a part of sludge to the aeration bath. The sludge exhausting part transfers a part of the sludge to a thickening bath.

Description

Advanced treatment utility using high speed precipitation filting method and advanced treatment process using it}

The present invention relates to an advanced treatment method, the present invention uses a simple equipment and a water treatment agent of a natural composite material to induce high-speed sedimentation filtration to improve treatment efficiency, and to minimize the amount of water treatment agent used and recycling of the sludge generated high-speed sedimentation filtration It relates to an advanced processing apparatus of the method and a treatment method using the same.

In the currently developed advanced treatment facilities, BOD (Biochemical Oxygen Demand) and SS (Floating Substances) can be removed with relatively high efficiency, but removal of TN (Total Nitrogen) and TP (Total Phosphorus) is not at high limit. It's reached. In other words, the removal rate of T-N, T-P is mostly in the range of 60 ~ 70% on average, and if you want to maintain the efficiency more than that causes a lot of problems.

However, when phosphorus and nitrogen contained in treated water are discharged without treatment, it causes eutrophication of rivers and lakes, which adversely affects water resources and aquatic ecosystems. The damage is more serious.

This necessitates an advanced treatment system capable of removing not only suspended solids but also nitrogen and India with high efficiency.

In addition, since a number of devices must be organically combined for the advanced processing, many devices are required for the advanced processing device, and therefore, a long time is required for the advanced processing. Accordingly, a new advanced processing apparatus is needed which is composed of relatively simple devices and can reduce the time required for advanced processing.

On the other hand, the advanced treatment devices generate a large amount of sludge in the treatment process, and these sludges must be discharged to the outside of the advanced treatment device to be treated and disposed of. However, the treatment and disposal of such excess sludge is expensive, and in recent years, there is a need for a new treatment and disposal technology due to the tightening regulations on its disposal method. Therefore, there is a need for a method for treating and disposing of such new excess sludge by minimizing or minimizing the generation of the sludge generated in the advanced treatment apparatus.

The present invention has been invented to solve the above problems, the present invention is to improve the treatment efficiency by inducing high-speed sedimentation filtration using a water treatment agent of a simple facility and natural composite material, to minimize the amount of water treatment agent and to recycle the sludge generated It is an object of the present invention to provide a high-speed sedimentation filtration advanced processing apparatus and a treatment method using the same.

Advanced processing apparatus of the high-speed sedimentation filtration method according to the present invention

An aeration tank including an air dispersing device installed at a lower portion to disperse air in the treated water in a bubble state;

A first stirring tank for stirring while adding a water treatment agent to the treated water passing through the aeration tank;

A second stirring tank for stirring the treated water having passed through the first stirring tank at a lower speed than the first stirring tank;

A settling tank in which a plurality of inclined plates facing the second agitating tank and inclined toward the second agitating tank and having an upper and a lower opening open to face a second agitating tank to induce precipitation of the suspended matter contained in the treated water that has passed through the second agitating tank;

A filtration tank installed at the rear end of the precipitation tank;

A sludge conveying unit for conveying a part of the sludge recovered from the settling tank to an aeration tank; And

It characterized in that it comprises a sludge discharge unit for transferring a portion of the sludge recovered in the settling tank to the concentration tank.

According to another preferred feature of the invention, the water treatment agent is 5-30% by weight ocher, 5-20% by weight waste fossil, 5-15% by weight limestone, 5-10% by weight feldspar, 5-10% by weight biotite germanium 5-30 5 wt% zeolite 5-10 wt% alumina sulfate 1-3 wt%.

Advanced processing method of the high-speed sedimentation filtration method according to the present invention

Aeration step of coarsening particles of suspended solids contained in the treated water using an air diffuser;

A first stirring step of inducing an agglomeration reaction by rapidly mixing and reacting the treated water and the water treatment agent containing the coarse particles in the aeration step;

A second stirring step of stirring the treated water that has undergone the first stirring step at a lower speed than the first stirring step to improve flocculation and adsorption efficiency;

A precipitation step of precipitating suspended solids using a plurality of inclined plates having a lower direction inclined in the flow direction of the treated water in the treated water that has passed through the second stirring step;

It comprises a filtration step of filtering the treated water passed through the precipitation step,

Part of the precipitate in the precipitation step is returned to the aeration step, and part is characterized in that the transfer to the concentration step for removing the water contained in the sludge.

In the advanced processing apparatus according to the present invention, since the suspended matter can be precipitated at a high speed using the inclined plate, the high speed treatment is possible.

In addition, by using a water treatment agent which is a natural composite material, the treatment efficiency is maximized, and the function of the natural composite material of the produced sludge can be used as a raw material of fertilizer and green soil by removing odor and sterilizing pathogenic microorganisms. Minimized.

In addition, it is possible to minimize the amount of the water treatment agent by recycling the unreacted water treatment agent by returning the sludge containing a large amount of water treatment agent in the precipitation tank to the aeration tank.

On the other hand, the advanced processing apparatus according to the present invention is capable of continuous processing, it is very easy to respond to changes in the amount of processing.

1 is a schematic diagram of an advanced processing apparatus according to the present invention;
2 is a schematic view of a filtration tank used in the present invention.

1 is a schematic diagram of an advanced processing apparatus according to the present invention. As shown in Figure 1, the advanced processing apparatus according to the present invention, aeration tank 100, the first stirring tank 200, the second stirring tank 300, sedimentation tank 400, filtration tank 500, sludge conveying unit ( 600) and the sludge discharge unit 700 is characterized in that it comprises.

Hereinafter, each part will be described.

The aeration tank 100 includes an aeration tank inlet 110, an air dispersing device 130 and an aeration tank discharge port 120. The aeration tank inlet 110 is a place where the treated water first flows into the aeration tank 100, which is generally installed at one of the side walls of the aeration tank 100.

The air diffuser 130 is installed inside the aeration tank 100, particularly preferably in the lower portion. This serves to maximize the particle size of the suspended solids by maximizing the growth and activity of aerobic microorganisms by maintaining a constant concentration of dissolved oxygen in the aeration tank 100.

The aeration tank discharge port 120 is a place where discharged treated water is discharged, which is preferably installed on one of the side walls. In addition, the aeration tank discharge port 120 is provided with an opening and closing means (not shown) such as a valve, it is possible to prevent the treated water contained in the aeration tank 100 is discharged during the aeration.

In the present invention, the stirring tank is composed of a first stirring tank 200 for stirring at a high speed and a second stirring tank 300 for stirring at a low speed.

The first agitator 200 is a part that induces a first aggregation reaction by a high-speed mixing reaction of the treated water and the water treatment agent, and includes a first agitator inlet 210, a chemical injector 240, a first agitator 230, and a first agitator. It includes a stirring stir outlet 220.

The first stirring tank inlet 210 is connected to the aeration tank discharge port 120, and the treated water after the aeration is introduced into the first stirring tank 200.

The chemical injector 240 is a portion into which the water treatment agent is injected, and it is preferable to use a device that can be quantitatively injected using an automatic dosing device. The drug injector 240 may be used because it is commonly used, a detailed description thereof will be omitted.

The water treatment agent used in the present invention preferably uses a natural composite material. This is described in detail below.

The first stirrer 230 is installed inside the first stirrer 200, which is installed to forcibly mix the treated water and the water treatment agent, which rotates at a higher speed than the low speed stirrer described later. The rotation speed of the first stirrer 230 is preferably rotated at a speed of 150 ~ 250RPM. If the rotational speed is less than 150RPM, there is a problem of chemical mixing, and if the rotational speed exceeds 250RPM, there is a problem in the floc generation.

The first stirring bath outlet 220 is a place where the treated water containing the water treatment agent that has undergone the first coagulation reaction in the first stirring bath 200 is discharged, and is preferably installed on the upper sidewall of the first stirring tank 200. Do.

The second agitator 300 agitates the treated water which has been firstly agglomerated in the first agitator 200 at a lower speed than the first agitator 200, so that floc is agglomerated in a second reaction between the treated water and the water treatment agent. And part for maximizing the efficiency of adsorption. That is, the second stirring tank 300 stirs the treated water containing the water treatment agent at low speed to increase flocculation and adsorption efficiency of the flocs by the water treatment agent. It is composed of a second agitator inlet 310, a second agitator 330, a second agitator outlet (320).

The second stirrer inlet 310 is connected to the first stirrer outlet 220, which is preferably installed at an upper sidewall like the first stirrer outlet 220. That is, the treated water in the first agitator 200 is naturally moved to the second agitator 300 through an upper portion of the sidewall where the first agitator 200 and the second agitator 300 contact each other.

The second stirrer 330 is operated at a lower speed than the first stirrer 230, and is preferably operated at a speed of 25 to 75 RPM. If it is less than 25RPM, there is a problem of flocculation, and if it exceeds 75RPM, the floc is broken.

The second stirring tank outlet 320 is a place where the treated water after the reaction in the second stirring tank 300 flows out, which is preferably installed at the lower side of the side wall as opposed to the first stirring tank outlet 220.

The settling tank 400 is a place for substantially separating the suspended solids from the treated water, which includes a settling tank inlet 410, a slope plate 430, sludge recovery unit 440 and the settling tank outlet 420.

The settling tank inlet 410 is a portion connected to the second stirring tank outlet 320, and is installed below the side wall.

The inclined plate 430 is installed in a direction perpendicular to the flow direction of the treated water and serves to induce precipitation of the suspended solids by collision with the suspended substances contained in the treated water. In the present invention, the top of the inclined plate 430 is inclined 5 to 40 degrees to the low speed agitation side in order to maximize the collision frequency of the floating material and the inclined plate 430 in the treated water to separate and settle the suspended material at high speed. Produced in the form. In addition, at least one inclined plate 430 is installed, and when two or more inclined plates 430 are installed, as shown in FIG. 1, the upper and lower portions of the inclined plate 430 are alternately opened to allow the suspended material and the inclined plate ( Maximize the collision frequency of 430). For reference, in FIG. 1, the first inclined plate is in an open shape, and the second inclined plate is in an open shape. The inclined plate 430 has a slope of 5 to 40 degrees, and in the case of the general sedimentation tank without the inclined plate, the precipitation efficiency was 62%, and the 30 degree primary slope plate precipitation efficiency increased to 72%, and the secondary slope plate precipitation efficiency increased. Is increased by more than 90%. In this case, when the angle of the inclination plate is less than 5 degrees, the high-speed sedimentation efficiency decreases, and when the angle of the inclination plate exceeds 40 degrees, there is a problem that it is difficult to form a smooth flow of the treated water.

The sludge recovery unit 440 is a part for recovering sludge deposited on the bottom of the settling tank 400, and generally, an apparatus capable of recovering sludge deposited on the bottom may be used. An example of the sludge recovery unit 440 may include a tea scrubber provided at the bottom of the settling tank 400, and two tea scrubbers are preferably provided. The sludge recovery unit 440 is preferably installed in the lower portion of the inclined plate 430 is open. This is because there is a high possibility that the sludge is deposited on the lower portion of the inclined plate 430 of which the top is open.

In addition, in the present invention, it is preferable to install two sludge recovery parts 440 in one settling tank 400. The first sludge recovery unit 441 is formed below the first slant plate 431 in the flow direction of the treated water, and may include a relatively large amount of unreacted water treatment agent.

The second sludge recovery portion 442 is formed at the lower end of the last inclined plate 430 or the end of the settling tank 400, which may include a relatively small amount of water treatment agent. For reference, in FIG. 1, since only two inclined plates 430 are shown, the second sludge recovery part 442 is installed at the end of the settling tank 400.

Some of the sludge recovered from the first sludge recovery unit 441 is transferred to the aeration tank 100 through the sludge conveying unit 600, the aeration tank 100, the first stirring tank 200, the second stirring tank 300 And a retreatment process while going through the settling tank 400, thereby minimizing the consumption of the water treatment agent due to the recycling of the unreacted water treatment agent.

Meanwhile, some of the sludge recovered from the first sludge recovery unit 441 and the sludge recovered from the second sludge recovery unit 442 are transferred to the concentration tank 800 through the sludge discharge unit 700.

The sedimentation tank outlet 420 is preferably formed on the side wall so that the suspended solids contained in the treated water finally collide with the side wall to sink to the bottom of the sedimentation tank.

Meanwhile, the sludge conveying unit 600 and the sludge discharging unit 700 are provided with a sludge conveying pump, and the sludge collected by the first sludge collecting unit 441 and the second sludge collecting unit 442 to a desired position. Can be transferred.

Filtration tank 500 is installed at the rear end of the settling tank 400, which is the portion for removing the last suspended matter from the treated water passed through the settling tank 400. The filter 530 is installed inside the filtration tank 500. The shape of the filtration tank is not particularly limited, but in order to improve the treatment efficiency, a filtration tank of the type shown in FIG. 2 may be installed.

The filtration tank is composed of a rapid filtration tank (540) and a slow filtration tank (550), which are pulverized into raw materials such as feldspar and elvan, which are raw materials of natural composite materials, and particles having an effective diameter of 0.3 mm to 0.45 m in the slow filtration tank (550). Filling, the rapid filtration tank 540 is filled with particles having an effective diameter of 0.45 ~ 0.7mm.

The treated water flowing into the upper portion of the rapid filtration tank 540 is moved to the adjacent slow filtration tank 550 through the lower portion in the state of primary filtering in the rapid filtration tank 540, and moves upwards of the slow filtration tank 550. Unfiltered impurities are removed from the rapid filtration tank 540 and are discharged to the outside through the upper portion of the slow filtration tank 550.

Filtration tank according to the present invention is determined by the sifting of the effective diameter of each material to improve the filtration performance, and also easy to wash.

The sludge conveying unit 600 serves to convey a portion of the sludge recovered from the settling tank 400 to the aeration tank 100. The treated water introduced into the settling tank 400 from the second stirring tank 300 may include an unreacted water treatment agent in addition to the suspended solids, and the suspended material and the unreacted water treatment agent collide with the inclined plate 430 to Stacked underneath, sludge is produced. In the present invention, in order to minimize the amount of water treatment agent used to recover the sludge produced in the lower portion of the settling tank 400 and to return it to the aeration tank 100.

The sludge discharge part 700 serves to transfer a portion of the sludge recovered from the settling tank 400 to the concentration tank 800. The sludge conveying unit 600 is installed at a position capable of conveying some of the sludge formed on the second stirring tank 300 side to the aeration tank 100, and the sludge discharge unit 700 is the second stirring tank 300 side Some of the sludge formed in the and the sludge formed on the filter tank 500 side is installed in a position capable of transferring to the concentration tank (800). Since the sludge formed on the side of the second stirring tank 300 contains a relatively large amount of water treatment agent, the sludge formed on the side of the second stirring tank 300 is conveyed to the aeration tank 100 in terms of utilizing this.

The advanced treatment apparatus according to the present invention may include a thickening tank 800, the thickening tank 800 is a device for lowering the water content of the sludge, and may be used that is generally used. This is the part to remove moisture because the sludge has a high moisture content, it is difficult to handle due to its weight and volume, and it is easy to rot due to the amount of organic substances.

In addition, a sludge drying apparatus for dewatering and drying the sludge may be further installed at the rear end of the concentration tank 800.

On the other hand, the water treatment agent used in the present invention is a natural composite material can be recycled to the rust soil while the sludge generated while being able to effectively treat the pollutants.

The sludge recycling water treatment agent according to the present invention is 5 to 30% by weight of yellow clay, 5 to 20% by weight of waste fossil, 5 to 15% by weight of limestone, 5 to 10% by weight of feldspar, 5 to 10% by weight of germanium 5 to 30% by weight. % Zeolite 5 to 10% by weight alumina sulfate 1 to 3% by weight.

It demonstrates for each component below.

Ocher serves as a microbial carrier of various kinds, the water treatment agent according to the present invention serves to help the decomposition of organic matter in the sludge by microorganisms after coagulation and precipitation with contaminants. Ocher is used 5 to 30% by weight, but less than 5% by weight ocher has little effect of removing contaminants, when more than 30% by weight of ocher reduces the content of other components, the water treatment agent according to the present invention functions properly There is a problem that can not be exercised.

Waste fossils are sludged together with contaminants to make up the calcium content, which is insufficient for use as green soil when recycled sludge to green soil. Before firing, the tissues are layered and relatively smooth, but after firing, the outer surface cracks due to heat expansion to increase the adsorption power. 5 to 20% by weight of waste fossil is used, but less than 5% by weight of waste fossil has a problem of less calcium component, and when the waste fossil exceeds 20% by weight, there is a problem of alkalizing water.

The calcined limestone is calcium oxide which controls pH and has bactericidal power. Limestone used in the present invention is prepared through a calcination process at 1200 ℃, thereby separating CaCO ₃ into CaO + CO ₂ as shown in the formula (1).

CaCO ₃ → CaO + CO ₂ --------- Formula (1)

Oxygen ions bound to calcium oxide generated in this process are introduced into the water and oxygen atoms are dissociated, and the dissociated oxygen atoms oxidize and destroy the cells of microorganisms in the water to exert their killing and sterilizing functions. In addition, some of the dissociated oxygen atoms combine with hydrogen ions (H ⁺ ) in water to form OH radicals, as shown in the formula (2), to enhance the killing and sterilizing effect.

^{_{CaO + H 2 O → Ca 2+}} + 2OH - ----------- formula (2)

In addition, oxygen dissociated calcium reacts with phosphorus (P), a pollutant, as shown in formula (3) to form an insoluble compound [(Ca ₅ (OH) (PO ₄ ) ₃ ] to inhibit and delay the generation of pollutants. It works.

_{^{5Ca 2+ + 2OH - + 3HPO 4}} → Ca 5 (OH) (PO 4) 3+ 3H 2 O ----- formula (3)

It is preferable that limestone in this invention contains 5-15 weight%. If limestone is more than 15% by weight, it is strongly alkaline and sludge is hardened and cannot be recycled to green soil, and when limestone is administered at less than 5% by weight, there is a problem of decontamination effect and bactericidal power.

Potassium feldspar is a kind of crude rock mineral, which neutralizes the acidification of sludge precipitated with high K feldspar and contains a large amount of K and Na which are essential elements for plant growth. In addition, the activity of ion exchange ability is increased through calcining and pulverization, and the adsorption ability with ions is excellent. When less than 5% by weight, the content ratio of K and Na components may be insufficient, and essential elements may be deficient.

Biotite is a mineral belonging to the monoclinic system. It forms a plate or impression and often shows hexagonal or rhombohedral, and has a high Al ₂ O _{3 content} ratio, so it has excellent ion exchange ability, and has a specific gravity of 2.5 to 3, which is the highest specific gravity among these materials. Can have In the present invention, 5-10% by weight is used. If the biotite is less than 5% by weight, the sedimentation and ion exchange capacity is lowered. If the biotite is more than 10% by weight, there is a problem in removing the contaminants and recycling the sludge to green soil due to the lack of content of other agents.

Germanium is a bluish-grayish-white metal element with excellent far-infrared radiation. Far-infrared is a long wavelength among infrared rays, which is strong in penetrating power to remove pollutants and enhance the effectiveness of housing in rusted soil. In the present invention, 5-30% by weight is used. If germanium is less than 5% by weight, far infrared rays are lowered, and if it is more than 30% by weight, there is a problem in removing contaminants and recycling sludge to green soil due to insufficient content of other agents.

Zeolite has many pores and has excellent CEC (cationic substitution capacity), which has the function of controlling algae, removing odors, particulates or toxic substances, and functioning molecular sieve to separate particulates. It is preferable to use 5-10 weight% of zeolites. If the zeolite is less than 5% by weight, the effect is reduced and if it exceeds 10% by weight there is a problem in removing the contaminants and recycling the sludge to green soil due to the lack of content of other formulations.

Alumina sulfate reacts with alkali in water to form aluminum hydroxide, which is used as a flocculant in the present invention because of its coagulation action. In the present invention, alumina sulfate is used to increase the cohesion of the green algae and contaminants adsorbed with the acid pH adjustment and other agents. In the present invention, it is preferable to use 1 to 3% by weight of alumina sulfate, but if the amount of alumina is less than 1% by weight, there is a problem in that the cohesive force of suspended solids is reduced and contaminant removal efficiency is lowered. If exceeded, the flocculation efficiency increases, but there is a problem in removing the pollutants and recycling the sludge to green soil due to the lack of content of other preparations.

Next, the manufacturing method of the water treatment agent used by this invention is demonstrated.

The water treatment agent used in the present invention is characterized in that after processing the respective components individually, these components are mixed by the composition ratio described above.

The processing steps of the individual components will be described.

The ocher is dried at 20-60 ° C., which controls the drying temperature so that beneficial microorganisms do not die and serve as carriers because the microorganisms of the ocher are multiplied.

Limestone and metal forming the powder obtained by crushing and milling to 1,200 ℃, This is done making to separate the main component of CaCO ₃ into CaO + CO ₂ to calcium oxide, in which importantly does not have the firing temperature reached 1,200 ℃ formula The reaction of (1) does not occur so that the predetermined object intended by the present invention cannot be achieved.

Waste fossil is naturally dried for 5 ~ 10 days after washing to remove salt, and then processed by pulverizing and milling the powder obtained at 1,200 ℃ to remove impurities.

Potassium feldspar is pulverized and milled to remove the impurities by firing the powder obtained at 600 ℃, but firing at less than 600 ℃ significantly reduced the multi-layer porous function of the water treatment agent and vitrified when firing more than 600 ℃.

Biotite and germanium sinter the powder obtained by crushing and milling at 600 degrees, and the calcination at this temperature significantly increases the activation of ionic components and far-infrared emissivity.

Zeolites plasticize the powder obtained by crushing and milling, respectively, at 400 degrees.

When firing more than 400 degrees, the unique porous structure collapses and does not function properly.

Next, 5 to 30% by weight of ocher obtained through the above-described processing process, 5 to 20% by weight of waste fossil, 5 to 15% by weight of limestone, 5 to 10% by weight of feldspar, 5 to 10% by weight of germanium 5 to 30% 5 to 10% by weight zeolite 1 to 3% by weight of alumina sulfate is mixed to prepare a water treatment agent for use in the present invention.

On the other hand, sludge generated from the water treatment agent used in the present invention can be recycled to green soil. In general, neutralization and air permeability of acidification occurring during sludge residence in the composition of green soil which is important for plant growth is important. The water treatment agent according to the present invention is made of a material such as silicon, aluminum, calcium oxide and neutralizes the acidic substance, and the surface area per unit weight of particles is much wider, so that the moisture and nutrient retention capacity is strong, so that the moisture content can be adjusted when preparing the rust soil composition. Breathability can be ensured and sludge can be recycled to green soil.

That is, the sludge precipitated with the water treatment agent used in the present invention shows a different shape from the sludge precipitated with the conventional chemicals. Sludge precipitated with chemical causes dehydration efficiency in the filter cloth of dehydrator during dehydration, so that dehydration efficiency decreases, and it increases the ratio of excipients (sawdust, etc.) when it dwells. The sludge treated by water treatment used in the invention can reduce the amount of excipients when it is injured by high dehydration efficiency through the porosity of each component constituting the water treatment agent, and solve the problem of odor, pathogenic microorganisms by deodorizing function and sterilization function and natural As a main raw material, minerals are not only high in potassium, phosphoric acid, calcium, magnesium, and trace elements of iron and functional ingredients, but also in organic matter and green algae, which are residues of green algae. Functional ingredients can increase the value as soil raw material or green soil for plant cultivation.

On the other hand, in the present invention, a sludge drying apparatus capable of dewatering and drying the sludge from which the moisture is partially removed from the concentration tank 800 may be further installed. Here, the dehydration may use a variety of methods, such as centrifugal separation, a variety of methods such as natural drying by sunlight and drying may be applied.

As a result, the present invention uses a water treatment agent composed of a natural composite material to induce agglomeration reaction while stirring at high speed firstly, and to increase floc flocculation and adsorption efficiency while stirring at low speed secondly, and through the specially designed ramp plate, Rapid settling allows for high speed treatment. In addition, in order to minimize the amount of chemicals used, the sludge containing the unreacted water treatment agent is returned, and the sludge generated for recycling of the sludge is dehydrated and dried, and sterilized by the action of the water treatment agent included in the sludge generated in this process. Deodorization and reduced moisture content make it possible to recycle sludge as raw material of fertilizer, soil improver or green soil.

Next, the treatment method according to the present invention will be described. The treatment method according to the present invention includes an aeration step, a first stirring step, a second stirring step, a precipitation step and a filtration step, and a part of the precipitate in the precipitation step is returned to the aeration tank 100, and a part of the concentration tank 800 Transfer to).

The aeration step is a step of coarsening the particles of the suspended solids contained in the treated water using the air diffuser 130, the process is carried out in the aeration tank (100).

The first stirring step is a step of rapidly mixing and reacting the treated water and the water treatment agent containing the coarse particles in the aeration step to induce an agglomeration reaction, which occurs in the first stirring tank 200.

The second stirring step is to improve the flocculation and adsorption efficiency of the floc by stirring at a lower speed than the first stirring step, and occurs in the second stirring tank 300.

The precipitation step is a step of precipitating the suspended matter using a plurality of inclined plates 430 inclined downward in the flow direction of the treated water in the treated water passed through the second stirring step, which is performed in the precipitation tank 400.

The filtration step is a step of filtering the treated water after the precipitation step.

Here, part of the precipitate in the precipitation step is returned to the aeration step, and part is transferred to the concentration step for removing the water contained in the sludge.

In addition, after the concentration step, a step of dewatering and drying the sludge may be added.

100: aeration tank
200: first stirring
300: second stirring
400: sedimentation tank
500: Filtration tank
600: sludge conveying part
700: sludge export part

Claims (8)

An aeration tank including an air dispersing device installed at a lower portion to disperse air in the treated water in a bubble state;
5 to 30% by weight of ocher, 5 to 20% by weight of waste fossil, 5 to 15% by weight of limestone, 5 to 10% by weight of feldspar, 5 to 10% by weight of germanium, 5 to 30% by weight of germanium, zeolite A first stirrer including a chemical input machine capable of adding a water treatment agent containing 5 to 10 wt% of alumina sulfate and a first stirrer for mixing the treated water and the water treatment agent added from the chemical input machine;
A second stirring tank for stirring the treated water having passed through the first stirring tank at a lower speed than the first stirring tank;
A settling tank in which a plurality of inclined plates facing the second agitating tank and inclined toward the second agitating tank and having an upper and a lower opening open to face a second agitating tank to induce precipitation of the suspended matter contained in the treated water that has passed through the second agitating tank;
A filtration tank installed at the rear end of the precipitation tank;
A sludge conveying unit for conveying a part of the sludge recovered from the settling tank to an aeration tank; And
It includes a sludge discharge unit for transferring a portion of the sludge recovered in the sedimentation tank,
The sludge generated is a high-speed sedimentation filtration advanced processing apparatus, characterized in that after the dehydration and drying process can be recycled to rust soil. delete According to claim 1, The plurality of inclined plate is a high-precipitation filtration type advanced processing apparatus, characterized in that the top is inclined 5 to 40 degrees to the second stirring side. According to claim 1, wherein the first stirrer rotates at a speed of 150 ~ 250RPM, the second stirrer rotates at a speed of 25 ~ 75RPM advanced processing apparatus of the high-precipitation filtration method. The advanced treatment apparatus of the high-precipitation filtration method according to claim 1, wherein a sludge drying apparatus for dewatering and drying the sludge is further provided at a rear end of the concentration tank. The high-precipitation filtration type advanced processing apparatus according to claim 1, wherein a sludge recovery unit for recovering sludge is provided at a lower part of the settling tank, and the sludge recovery unit is installed at a lower part of an inclined plate having an open top. Aeration step of coarsening particles of suspended solids contained in the treated water using an air diffuser;
5 to 30% by weight of treated water and coarse soil containing coarse particles in the aeration step, 5 to 20% by weight of waste fossil, 5 to 15% by weight of limestone, 5 to 10% by weight of feldspar, 5 to 10% by weight of biotite, A first stirring step of rapidly mixing and reacting a water treatment agent containing 5 to 30% by weight of germanium 5 to 10% by weight to 1 to 3% by weight of alumina sulfate to induce an aggregation reaction;
A second stirring step of stirring the treated water that has undergone the first stirring step at a lower speed than the first stirring step to improve flocculation and adsorption efficiency;
A precipitation step of precipitating suspended solids using a plurality of inclined plates having a lower direction inclined in the flow direction of the treated water in the treated water that has passed through the second stirring step;
It comprises a filtration step of filtering the treated water passed through the precipitation step,
Part of the precipitate in the precipitation step is returned to the aeration step, part is transferred to the concentration step for removing the water contained in the sludge,
Drying and dehydrating the sludge after the concentration step to recycle the sludge to the rust soil, characterized in that the high-precipitation filtration method advanced processing method. The method of claim 7, wherein
The water treatment agent
Ocher processing step of drying the ocher at 20-60 ℃,
After washing waste fossil for 5-10 days, it is crushed and milled.
Waste fossil processing step of plastic processing the obtained powder at 1200 ℃,
Limestone for plastic processing the powder obtained by crushing and milling limestone at 1200 ℃
Step,
Limestone processing for calcining powder obtained by crushing and milling feldspar at 600 ℃
step,
The biotite that calcined and milled the biotite at 600 ° C
Step,
Germanic plastic processing of powder obtained by crushing and milling germanium at 600 ℃
Machining process,
Zeo which is calcined at 400 ℃ for powder obtained by crushing and milling zeolite
Light processing stage,
Sulfuric acid plaque, which is obtained by crushing and milling alumina sulfate, and calcining the powder at 600 ° C.
Earthwork process, and
5 to 30% by weight of ocher obtained in the above steps, 5 to 20% by weight of waste fossil, 5 to 15% by weight of limestone
5% by weight, feldspar 5-10% by weight, biotite 5-10% by weight germanium 5-30% by weight zeolite 5-10% by weight, a high-speed sedimentation, characterized in that it is prepared through a mixing step of mixing 1 to 3% by weight alumina Filtration type advanced processing method.

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