KR20160061591A - Multipurpose Device that is used for Biological Purification, Settling, Condensation and Filtration Process simultaneously - Google Patents

Abstract

The present invention relates to an apparatus in which both a water treatment part and a solids separation part are installed in a single reactor and, thus, contaminated water can be treated in an intensive manner. Provided is a water purification apparatus configured such that contaminated water is purified in a water treatment part, and passes through a solids separation part in which a settling part, a condensation part, a solid-liquid separation part and a filtration part are sequentially disposed, in the form of a plug flow, wherein solids are removed in the condensation part and purified water is discharged. The water purification apparatus can reduce installation costs and a required site area, and can induce optimal growth of microorganisms by separating a cultivation space for heterotrophic bacteria performing denitrification reaction and a cultivation space for autotrophic bacteria performing nitrification reaction from each other, thereby enabling water to be purified at high efficiency.

Description

TECHNICAL FIELD [0001] The present invention relates to a multi-purpose water purification apparatus for biological purification, including a biological water treatment, a sedimentation, a concentration, and a filtration process,

The present invention reduces the installation cost and the required site of a water treatment facility by performing simultaneous biological purification and solid-liquid separation in a single reaction tank, and provides pollutant which secures optimal microbial activity through separate culture of heterotrophic microorganisms and independent nutrient microorganisms It is a water purifier.

Biological water treatment technology using microorganisms consists of a process of decomposing pollutants by the biological action of microorganisms and a process of separating purified water and microorganisms. Biological contaminant decomposition process proceeds with the production of various microorganisms in the decomposition process of organic compounds, and nitrification of microorganisms by nitrification of ammonia. Many of the microorganisms produced through these biological reactions are separated from the treated water in subsequent processes and then disposed of by landfill, incineration, and the like. Biological water treatment process, which is widely used up to now, requires a large amount of site area and installation cost by separately installing a reaction tank for microbiological action and a process for separating purified water from microorganisms.

The fluidized carrier used to purify the polluted water has a high degree of integration of the microorganisms and is resistant to shock loads due to the presence of various microorganisms such as bacteria, protozoa, and rotifer. Also, as the microorganisms adhere to the fluidized bed support and grow, the sludge generation amount is reduced by the assimilation reaction as compared with the conventional suspended microorganism process. Nitrifying bacteria, which grow slowly, adhere to the carrier, and the nitrification reaction is more stable than the floating growth microbial process.

In the present invention, a device for inducing a process of decomposing contaminants and a process of separating microorganisms and purified water from each other in a single reaction tank is made and a fluid carrier is filled, thereby enabling stable purification of contaminants even under low temperature conditions. It is a highly integrated water quality purification device that can reduce installation cost and required site of water treatment facility.

In order to reduce the installation cost and required site area by integrating the biological water treatment part and the settling part, the hydraulic effect of the water treatment part, the sedimentation part, the concentrating part and the filtration part in one structure is minimized so that the suspended water is not contained in the discharged water will be. In addition, all the microorganisms produced in the water treatment section are integrated in the concentration section to lower the solids load on the filtration section, thereby keeping the concentration of the suspended substances in the discharged water very low.

(Fig. 70), a thickening section (Fig. 80), and a filtration section (Fig. 90) integrated with the water treatment section (Fig. 60) and a U-shaped structure are installed inside the water tank. As shown in FIG. 1 of the 'U' shaped structure, a portion of the 'U' shape is installed in a cut-like shape so as to have a shape similar to that of a similar fishing needle. Such a structure is obtained by maintaining the plug flow from the settling portion (FIG. 70) to the thickening portion (FIG. 80), the solid-liquid separating portion (FIG. 100) The impact is prevented from being transmitted from the precipitating section (Fig. 70) to the thickening section (Fig. 80), the solid-liquid separating section (Fig. 100), and the filtration section (Fig. 90). In order to effectively concentrate the microorganisms in the concentrating part (FIG. 80) in addition to such a structural device, a baffle (FIG. 12, FIG. 31) for guiding the hydraulic flow to the concentrating part is provided at the lower part of the partition wall, (Fig. 80).

20), and a part of the lowermost end thereof is provided with a mesh screen (Fig. 21), so that the microorganisms desorbed from the fluid carrier (Fig. 50) And collected in the concentrating part. The plate-like concave structure is provided with pillars (Fig. 22) using materials such as reinforced concrete or stainless steel so as to be firmly fixed to the outer wall of the water tank. The solid-liquid separation unit (FIG. 100) is provided with a baffle (FIG. 46) for trapping microorganisms that are lost to the outside by endogenous breathing or hydraulic lift, To be collected.

45) and a mesh screen (Fig. 45) are provided at the lower end of the upper strainer (Fig. 48), and the strainer (Fig. . The floating filter media (FIG. 42) is made of a material having a very strong floating force such as styrofoam. The mesh screen (FIG. 45) is pulled down by the double pulley (FIG. 40) and quickly rises by the strong upward force of the floating filter medium (FIG. 42) and collides with the elastic body (FIG. 45). The suspended solids (SS) adhering to the filter material are desorbed by the shock wave caused by the collision, and the filter material restores the original performance.

The effect of the present invention is to reduce the installation cost and area required for water treatment by simultaneously performing the biological water treatment reaction and the solid matter and the treatment water separation reaction in a single reaction tank, and the settling portion, the concentrated portion, Plug flow) flow structure, it is possible to maintain very stable discharge water quality.

In addition, when a low concentration of pollutants is introduced into the integrated reactor by filling a fluid carrier in an integrated reactor, nitrification reaction can be performed using only pure attached microorganisms, so that the amount of sludge generated can be reduced to maintain a more stable treated water quality .

The driving force of the filtration unit uses high-pressure rinse water and compressed air for desorption in general. However, in the present invention, the natural buoyancy of the floating carrier is characterized in that the elimination energy of microorganisms and suspended solids attached to the carrier is greatly saved.

The gravity type sedimentation tank which has been used up to now is a structure in which sedimentation is caused by sedimentation due to the specific gravity of solids, but the present invention is enriched by hydraulic energy due to the slit and baffle installed between the vented portion and the dish- The concentration of the precipitated solids is maintained at a high level, and the capacity of piping, storage tank, concentrator, dehydrator and the like necessary for disposal and transportation of solids can be made smaller.

1 is a representative view of the present invention
2 is a sectional view when applied to an aeration tank
3 is a cross-sectional view for use in an anoxic tank
Fig. 4 is a schematic view showing a case where the anoxic tank and the aeration tank are connected to each other for water quality purification

The water treatment unit (FIG. 60) and the water treatment unit (FIG. 70), the concentration (FIG. 80), the solid liquid separation (Fig. 70), enrichment (Fig. 80), solid-liquid separation (Fig. 100) and filtration section (Fig. 90) are successively connected. The solid matter produced by a biological action such as denitrification, nitrification, or the like in the water treatment section flows into the sedimentation portion (FIG. 70) corresponding to the tip of the fishing needle. In the settling portion (FIG. 70), the solids form a flock and become gradually larger. The solid matter and the treated water that have passed through the settling portion (FIG. 70) are collected in the concentrated portion (FIG. 80) and are further concentrated by gravity. In order to strengthen the concentration, a slit (Figs. 13 and 32) and a baffle (Figs. 12 and 31) are provided between the water treatment section (Fig. 60) and the concentration section (Fig. The concentrated solids in the concentrating part (Fig. 80) are discarded or transferred to other processes, thereby minimizing the flow into the solid-liquid separating part (Fig. 100) and the filtration part (Fig. 90). On the other hand, when the concentration of microorganisms in the water treatment section (Fig. 60) is low, the solid matter in the concentration section (Fig. 80) is returned to the water treatment section (Fig. 60) to increase the microorganism concentration. By this operation, it is possible to simplify maintenance of the microorganism concentration and to reduce the installation cost of the piping, compared to the conventional technology in which a separate sedimentation tank is installed and operated. The concentration of the solid matter that has passed through the concentrating part (FIG. 80) is greatly reduced, and the sediment is not introduced into the filtration part (FIG. 90) by gravity in the solid-liquid separation part (FIG. 100). The sedimented solids are re-introduced into the concentrate (Fig. 80) by the slit (Fig. 32) and the baffle (Fig. 31), so that the filtration portion (Fig. 90) is in a state where there is relatively no solids and most of the treated water. The filtration part (FIG. 90) is provided with a filler material having a strong buoyancy (FIG. 42), passes through the solid-liquid separation part, and then the remaining solid material is filtered to discharge the treated water with extremely low solids content. The filtration part (FIG. 90) is provided with a strainer (FIG. 48, FIG. 41) at the uppermost part and the lowermost part to define the range of movement of the filling part. 43) is provided. The screen (FIG. 43) is fabricated in a mesh shape, and a ring is formed to allow upward and downward flow. (FIG. 40) is installed to remove the solids adhered to the filling material (FIG. 42), and the pulley (FIG. 40) is pulled to the screen 48) moves down and the filler (FIG. 42) moves together. 43) and the filler (FIG. 42) are raised by the strong upward force of the filler (FIG. 42) by removing the downward force of the pulley acting on the screen after the screen is moved to a predetermined distance. (Fig. 48) and the elastic body (Fig. 45) attached directly below. This collision causes the solids attached to the filler (FIG. 42) to be desorbed to restore the function of the filler. This series of hydraulic flows completely separates the solids and the treated water, thereby enabling an intensive installation of the water treatment apparatus and the water tank.

These multifunctional water tanks can be individually installed in an anoxic tank for denitrification reaction and in an aerobic tank for oxidation reaction, and they can be operated in conjunction with each other as shown in Fig. When operating as in the anoxic tank (FIG. 3) for the denitrification reaction, the inner wall for height adjustment (FIG. 130) can be installed to control the concentration of the solid material. An agitator for mixing the solid material (FIG. In addition, a pump (FIG. 120) can be installed in the concentrated portion (FIG. 80) and the solid matter can be conveyed to the water treatment portion (FIG. 60). In some cases, if phosphorus chemical treatment is required, phosphorus chemical treatment can be performed by injecting coagulant and related chemicals into the anoxic tank. In the anoxic tank, water containing organic matter, water containing nitrate nitrogen (NO3-N), and nitrite nitrogen (NO2-N) are injected to operate so that nitrogen and organic matter are removed through denitrification.

On the other hand, when a multifunctional water tank is installed in the aerobic tank, an oxygen pipe is installed on the bottom of the water treatment unit to inject oxygen. The oxic tank may be filled with a fluid carrier (FIG. 50), as the case may be, to further promote the nitrification reaction, and a screen (FIG. 11) should be installed to prevent the carrier from being lost. The water treatment section (FIG. 60), the sedimentation section (FIG. 70) and the thickening section (FIG. 80) are not connected by slit, and the movement of water and solids proceeds only by the screen (FIG. 11) . Through this separation, the solid matter collected by the concentrating part can maintain the anaerobic state, and the denitrification reaction can smoothly proceed in the return to the anoxic tank.

When the anoxic tank and the oxic tank are connected in series (Fig. 4), the contaminated water flows from one side of the anoxic tank, and the denitrification reaction proceeds while stirring with the mixed microbial and sewage mixed liquid returned from the oxic tank. After the denitrification is completed, the solid material is separated from the water by sequentially passing through the settling portion (FIG. 70), the thickening portion (FIG. 80), and the solid-liquid separating portion (FIG. 100) . In the anoxic tank, a large amount of air is injected, decomposition of organic matter by aerobic heterotrophic microorganisms, and nitrification by nitrifying microorganisms proceed. At this time, when the fluid carrier is filled (FIG. 50), the amount of floating microorganisms is not increased due to the microorganisms attached to the carrier. The suspended microorganisms and the microorganisms desorbed from the carrier are sequentially passed through the settling portion (FIG. 70), the dense portion (FIG. 80), the solid-liquid separating portion (FIG. 100) and the filtration portion .

Through the installation and arrangement of the water tank, it is possible to achieve high water treatment efficiency without installing a separate sedimentation and filtration device, and also to perform nitrification effect very stably even at low water temperature through the nitrification reaction using the microorganisms attached to the fluid carrier . In particular, it is possible to optimize microbial activity by cultivating nitrate bacteria which dominantly cultivates heterotrophic denitrifying bacteria in anoxic tank and adheres to a fluid carrier in an aerobic tank, thereby shortening water treatment time.

10 short inner bulkhead
Fig. 11 Screen for preventing the loss of the carrier
12 Short internal bulkhead side solids flow induction baffle
Figure 13 Short internal bulkhead side solids flow induction screen
20: Water treatment section and solids separator blocking liner
Figure 21 Water treatment and concentration section flow induction screen
Figure 22 Outer wall of water tank and liner connection post
30 Long inner bulkhead
Figure 31 Long internal bulkhead side solids flow induction baffle
32 Long inner bulkhead side solids flow induction screen
Fig. 40 Double Doppler
Figure 41 Lowermost strainer
Fig. 42 Floating filler
Fig. 43 Loss prevention screen of filling material
Fig. 44 Loop attached to screen for preventing filling material
Fig. 45 Elastomer
46 Portion of solid-liquid separator Baffle
Figure 47 Solid-liquid separation part
Figure 48 Upper strainer
50 fluid carrier
60,
70,
80 concentrator
90,
100 Solid-liquid separation unit

Claims (10)

The water treatment section and the solids separation section are installed in one water tank
After the contaminated water is purified in the water treatment section, the solid matter and the purified water are sequentially passed through the sedimentation section, the enrichment section, the solid-liquid separation section, and the filtration section in accordance with the plug flow
Wherein the solids are collected in a concentrating compartment and the purified water passes through the filtration compartment and is discharged. The apparatus according to claim 1, wherein the water treatment section and the solids separation section are divided into a fishing needle-like structure and the precipitating section, the concentrating section, the solid-liquid separating section, and the filtration section are arranged sequentially. A partition wall having a length corresponding to 50 to 90% of the water depth inside the water tank in order to distinguish the water treatment unit from the sedimentation unit. The liner as set forth in claim 1, wherein the liner is installed in a dish shape at the bottom of the water treatment section to cut off the hydraulic flow of the water treatment section and the solids separation section. An apparatus for desorbing solid matter adhered to a filler material by using buoyancy of a floatation filler in the filtration unit of claim 1. A device as claimed in claim 5, wherein a packing material is provided between the strainer and the filler material lest prevention screen to appropriately utilize the buoyant force of the filler material, thereby rapidly releasing the solid matter. Anoxic tank in which organic matter and nitrogen are removed by a heterotrophic denitrifying microorganism as the water containing organic matter and nitrified water are introduced together;
In the anoxic tank, the solid matter and the purified water in the state in which the denitrification has been completed are introduced into the solid matter separator provided with the sinkers, the concentrator, and the solids separator sequentially in the form of a fishing needle on the bottom of the anoxic tank,
An aerobic tank that flows into one side of the aerobic tank following the anoxic tank to perform residual organic matter removal, nitrification reaction, and phosphorus removal reaction;
In the aerobic tank, the solid matter and the purified water, which have been subjected to the oxidation and nitrification reactions, are introduced into the solids separation unit in which a sedimentation unit, a thickening unit, a solids separation unit and a filtration unit are sequentially installed in a fishing needle shape below the aerobic tank, The water purification apparatus for purifying water and returning the solid collected in the concentrating unit to an anoxic tank installed at the front end of the oxic tank to induce nitrogen removal action. 8. The water purification apparatus of claim 7, wherein the aerobic tank further comprises a fluid carrier. The water quality purification device according to claim 7, wherein the concentrated portion of the anoxic tank and the oxic tank performs the conveying and disposal of solids. The water purification apparatus according to claim 7, wherein the solid matter is conveyed to the water treatment unit in the concentration unit of the anoxic tank.

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