KR20040076755A - a contact material, a treatment device of water using above contact material and an additive feed using by-product of treatment water - Google Patents

Abstract

PURPOSE: To increase purification efficiency of wastewater by using a multi-stage biological membrane and minimize equipments by a layered structure of the biological membrane. CONSTITUTION: The apparatus comprises a wastewater reservoir(15) installed to collect wastewater, a biological membrane reaction tank(13) where many first and second biological membrane contact tanks(2,3) are selectively installed on the inner side of a hopper(4) vertically and horizontally, a settling tank(9) installed to settle foreign materials in the first treated water at the wastewater reservoir and the hopper and a wastewater circulation part(11) installed to recirculate supernatant of the settling tank and the wastewater reservoir to the biological membrane reaction tank. The feed is prepared by hydrophilizing byproducts treated by the wastewater treatment apparatus.

Description

Fish feed for fish tanks using natural aeration of water and by-product by-products {a contact material, a treatment device of water using above contact material and an additive feed using by-product of treatment water}

The present invention relates to a wastewater treatment apparatus by natural aeration of the contact medium and the feed of the fish tank fish freeze-dried by its byproducts, more specifically, the sewage and wastewater is composed of fibrous yarn attached to the circular or plate-shaped valve in the form of a cilia It is composed of a multi-layer biofilm contact tank that is made up of one or more layers, which is made up of one pair up and down, and recycled by-products generated after water treatment, and used as feed for fish tanks. The present invention relates to a wastewater treatment apparatus by aeration and feed for fish-tanks using its by-products.

In general, the wastewater treatment method includes a trickle filtration method, an activated sludge method, and a catalytic oxidation method, and the double trickle filtration method uses primary precipitated effluents such as crushed rocks or other intermediate layers in which the mucosa layer of microorganisms is stacked on top. It is sprayed over the contact media, and the biofilm is contacted with organic matter in the wastewater and treated.

Here, the mucous membrane layer of the microorganism is mainly composed of bacteria, etc. If the environment is good, it may be present as higher organisms such as sludge beetle, fly larvae and rotifers, and nitrifying bacteria inhabit near the deep bottom. It often happens.

Although the sprinkling filter method is classified as aerobic treatment method, it is aerobic with only 0.1 ~ 0.2mm of surface layer in the microbial film on the surface of contact medium, and it is formed anaerobic inside, and it has excellent ability to cope with load fluctuations, and it does not need to transport sludge. In addition, the sludge generation amount is low, and the construction cost and maintenance cost is low, but the operation is easy, but when the depth of the contact medium is deep, there is a problem that a odor is generated, the closing phenomenon is generated, such as a fly.

In addition, the activated sludge method replaces the water-spilling filter method, and dissolved organic matter is ingested and decomposed by microorganisms in the aeration tank, and the grown microorganisms are condensed and precipitated in the terminal sedimentation cell and partially returned to the aeration tank as activated sludge. It is a method to discharge it.

However, this activated sludge method is widely used because of its excellent treatment effect. However, when applied to small-scale wastewater treatment, it is weak to load fluctuations and requires specialized technology for adjusting sludge (microorganisms) and airflow. There is a problem that sludge bulking occurs.

On the other hand, the catalytic oxidation method, also called fixed bed activated sludge method, is a method of treating organic wastewater by using a biofilm, and filling a contact medium in an aeration tank to aerated while contacting the wastewater with a biofilm on the surface of the contact medium to aeration. It is a method to remove organic matter.

However, the biomass generated in the contact media is determined by the load conditions, and the biomass cannot be controlled.Because bio sludge is produced in proportion to the load, the contact conditions are limited when the load is large. It is difficult to give up, and there is a problem that a dead space may occur.

Much research has been done on wastewater purification treatment related to this technology. Among them, Korean Utility Model Registration No. 1993-2216 (Aerobic, Wastewater Purification Facility by Aerobic Contact Cycling Act and its treatment method), Purifying wastewater by using microorganisms, the sedimentation tank for sedimenting and separating solids and contaminants contained in the influent wastewater, the first of which is filled with anaerobic media to remove the nitrogen content and improve the organic matter removal effect in the wastewater. (2) Fill the contact media including the aerobic microbial layer to separate and remove the anaerobic filtration tank and organic matter, and configure the wastewater to enter into the towel from the first and second contact aeration tanks equipped with aeration devices.

In addition, an air lift pump for circulating the settled circulating water, a settling tank equipped with a metering device, and a disinfection tank for finally disinfecting wastewater and a discharge tank for discharging the final treated water are connected from the wastewater inflow side to the discharge side of the treated water. It is to be configured.

However, in the above technique, since there are no facilities and processes for periodically backwashing anaerobic media and discharging the backwash water, the contact area between wastewater and media is reduced due to media closure during long time use, resulting in reduced treatment efficiency and inflow. Long-term sedimentation of solids causes a decrease in crude treatment capacity and odor, and by supplying circulating water from the sedimentation tank to the anaerobic filtration tank, sludge (sediment) is deposited in the anaerobic filtration tank to worsen the anaerobic condition, and discharged directly through the sedimentation tank. There is a problem such as residual pollutants outflow during the process.

On the other hand, Patent Application No. 2000-54525 is proposed to solve the above problems, as shown in Figure 1, the waste water is circulated through the anaerobic, aerobic state through the circulating water tank and the contact aeration tank, the final through the attached filtration tank After treatment, the sediment that is impeded by the treatment efficiency is effectively discharged, microorganisms are activated, and anaerobic / aerobic contact circulation and adhesion filtration are used to maximize the treatment efficiency by removing residual pollutants.

The treatment apparatus of the patent application No. 2000-54525, the sedimentation separation tank 91; In order to decompose the treated water overflowed from the sedimentation tank into anaerobic microorganisms, there are circulating water tanks 1, 2 and 92 (93, 93) each having an anaerobic medium, and the circulating water tanks 1 and 2 are excessively attached to the anaerobic medium. Includes a customs office for the dropping of sludge; Contact aeration tanks 1 and 2 disposed adjacent to each other, including an aerobic media for decomposing and treating the treated water overflowed from the circulation tank 2 into aerobic microorganisms, and backwashing pipes and diffusers for dropping sludge that is excessively attached to the aerobic media. Two chambers (94, 95), wherein part of the treated water in the contact aeration tank two chambers is recycled to the one circulation chamber through a circulation pipe; A settling tank (96) for receiving the treated water flowed from the two contact aeration chambers to settle the sludge, and at the same time, transporting and discharging the sludge to the settling separation tank through a surplus sludge conveying line through an air lift; An attachment filtration tank (97) for further processing the residual contaminants contained in the treated water flowing from the sedimentation tank as an adhesion medium, but the excess sludge in the adhesion medium by dropping the sludge removed at the same time with a backwashing tube installed in the attachment filtration tank A backwash water conveying pump for transporting and discharging the sewage separation tank through a backwashing pipeline; It is configured to include a blower 90 for performing aeration, backwash, and airlift necessary for each tank.

Such a water treatment device, in order to treat the waste water, the solids or contaminants contained in the waste water is introduced into the sedimentation separation tank sedimentation treatment, and the primary treatment water flowed from the sedimentation separation tank, each containing an anaerobic media 1 Nitrogen is removed by anaerobic microorganisms by sequentially supplying them to the chamber and two chambers of the circulating water tank, and the treated treated water is sequentially overflowed into one contact aeration tank and two contact aeration tanks each containing an aerobic medium and aerated at the same time into each contact aeration tank. The organic matter is decomposed by activation of the organic matter, and the treated water in which the organic matter is decomposed is introduced into the sedimentation tank to settle the organic matter in the tertiary treated water, and the treated water overflowed in the sedimentation-precipitated sedimentation tank to the attachment filtration tank including the contact filter. Activated aerobic microorganisms by oxygen supply to remove residual pollutants It is adapted to process the waste water stream in order to.

However, the wastewater treatment device of the patent has a complicated structure and requires a plurality of steps, so the space occupied by the device is too large, and the oxygen must be supplied artificially, resulting in a lot of trouble and economic burden, and decisively. In the treatment of waste water, it cannot be purified until it becomes reusable water, and can only be treated to a level that can be discharged, and thus it cannot bring about the effect of reuse of the treated water.

In addition, the waste water treatment device of the patent is configured to discharge the waste water is determined that the purification of the waste water is finished when the waste water proceeds to each set once, rather than by discharging water that has not completely removed the pigment or smell, etc. Can cause pollution and thus destroy ecosystems.

An object of the present invention for improving this is to circulate and purify sewage and waste water by using a multi-stage biofilm in which a pair of upper and lower layers are repeatedly stacked to significantly increase the purification efficiency of the wastewater, and to install the facility by the biofilm stacking structure. Minimize.

In addition, when the by-products are freeze-dried and used in the feed of fish tank fish, the water purification ability is significantly improved to maximize the survival rate of the fish.

1 is a diagram illustrating an operation of a wastewater treatment system and a method using a conventional anaerobic and aerobic contact circulation method and an attached filtration method.

Figure 2a, b is a perspective view showing a contact medium according to the present invention, respectively.

3 is a perspective view showing a water treatment apparatus using a contact medium according to the present invention.

Figure 4a, b, c, d is a perspective view showing a contact medium installation state of the water treatment apparatus using the contact medium according to the present invention, respectively.

5 is a perspective view showing an intermediary film for filling contact media of a water treatment apparatus using the contact media according to the present invention.

Figure 6a, b is a perspective view showing a water treatment apparatus using a contact medium according to another embodiment of the present invention, respectively.

7A and 7B are perspective views illustrating a state in which contact media are mounted in a tank according to another embodiment of the present invention.

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

2 ... 1st biofilm contact tank 3 ... 2nd biofilm contact tank

4 ... Collection hopper 5 ... Waste water supply piping

7.Monthly overflow tank 9.Sedimentation tank

10 Circulation pump 13 Biofilm reactor

15 Wastewater collection 20 Intermediate film

In order to achieve the above objects, it is composed of a contact medium attached to the circular or plate-like valve of 0.01 mm or less synthetic fiber yarns in a ciliary state of 100 mm or less length, preferably 0.1 mm or less synthetic fiber yarns of 40 mm or less Contact media attached in the length of the cilia are effective. Synthetic fiber yarns include polyethylene, polypropylene, vinylon, nylon, polycarbonate, melamine resin, polyurethane resin, epoxy resin, and vinyl chloride resin.

On the other hand, the present invention, a biofilm reaction tank for collecting and discharged as a collection hopper after purifying the waste water falling using the biofilm that is repeatedly stacked;

A sedimentation tank for collecting sewage from the wastewater collection tank and the purified wastewater of the collection hopper and discharging the wastewater sludge settled through the sludge discharge pipe;

Provided is a water treatment apparatus using a contact medium and a contact medium for circulating the waste water circulation unit for circulating the supernatant water of the sedimentation tank to the biofilm reaction tank by using a circulation pump.

On the other hand, the present invention provides a feed of fish for fish tanks using the water treatment by-products to freeze-dried the water treatment by-products and to solidify to a certain shape.

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

The present invention adopts a multi-layered biofilm method using a drop of water, which takes all the advantages of the sprinkling filter method, the activated sludge method, and the catalytic oxidation method adopted in the existing wastewater treatment apparatus, and improves the disadvantages thereof.

In other words, in the biofilm reaction tank 13 of the present invention, the first and second biofilm contact tanks 2 and 3 are configured in a multi-stage lamination structure in which the first and second biofilm contact tanks 2 and 3 are repeatedly stacked up and down repeatedly.

At this time, the first biofilm contact tank (2) is to form a biofilm on the cilia fixed to the outer circumferential surface of the ball (plate) or plate, that is, the ciliary fixed phase contact medium of various forms generally used widely.

The contact media (2a) and (3a) of the present invention have a first or second biofilm contact tank having a ciliated fiber yarn having a thickness of 0.1 mm or less and a length of 40 mm or less to a circular or plate-shaped and triangular valve. A plurality of first and second biofilm contact tanks 2 and 3 are integrally connected to each other in a width direction and a length direction of 2 and 3.

On the other hand, the water treatment apparatus using the contact medium of the present invention, to form a biofilm contact tank in a shape in which the contact medium as described above are interconnected, the second biofilm contact tank (2) is a conventional island model The biofilm is formed on the fluidized bed contact filter, that is, the ciliate formed to hang down like a branch, and the second biofilm contacting tanks 2 and 3 are extended in a shape in which a rope-shaped filter medium is connected to a plurality of rings. .

In addition, the biofilm contact tank is composed of various types of ciliated stationary and fluidized bed contact media, and forms the biofilm by the cilia fixedly attached to the outer circumferential surface of the sphere.

In particular, a plurality of outlets 20-1 are formed in the interlayer film 20 provided on the lower side of the first and second biofilm contact tanks 2 and 3, and the outside of the outlets is formed in a plate shape or a sphere shape. When the falling wastewater is discharged through the discharge port, it is collided by a drop, and water is sprayed to the surroundings so that the biofilm of the cilia is brought into contact with the wastewater.

In addition, the biofilm contact tank is formed in the shape of the hopper penetrates a predetermined height of the water pipe is installed to automatically discharge the waste water of a predetermined amount, the nozzle is installed in the upper portion is sprayed waste water, the water spray control valve at the bottom Is connected to spray the wastewater to the bottom of the film contact tank.

The first biofilm contacting tank of the first and second biofilm contacting tanks 2 is aerobic and anaerobic using a biofilm formed around the cilia from the circulating wastewater sprayed from the nozzle 1-1 of the nozzle pipe 1. The microorganisms are treated, and the second biofilm contact tank is purified by using a ciliated biofilm to treat wastewater that is splashed around while colliding with the interlayer film 20 by a drop during the fall.

In addition, the biofilm reaction tank 13 is provided with a collection hopper 4 at the lower side thereof to collect the purified wastewater passing through the biofilm contact tanks 2 and 3 of the multi-stacked type to drop into the settling tank 9.

Here, the sedimentation tank 9 installed to be located below the collection hopper 4 of the biofilm reaction tank 13 is supplied with the wastewater of the wastewater collection tank 15 through the wastewater supply pipe 5, and sludge in the wastewater is supplied. It is installed to be discharged to the outside through the sludge discharge pipe (8) while the natural precipitation.

In particular, the sludge settling or the supernatant of the settling tank 9 purified through the biofilm reactor 13 is pumped through the first and second circulation pipes 14 and 6 by the pumping action of the circulation pump 10. It is supplied to (1).

In addition, the supernatant purified by the operation in the sludge removal and the repetitive circulation of the biofilm reaction tank 13 by sedimentation in the waste water contained in the sedimentation tank (9) is overflowed through the overflow wall (12) After being stored in the flow tank (7), the discharge is made in the final purified state again through the overflow water pipe (7-1).

In particular, the wastewater in the sedimentation tank 9 repeats the settling and purifying process until the final discharge through the overflow water pipe 7-1 to prevent the anaerobic damage.

In addition, the nozzle pipe 1 installed at the upper portion of the biofilm reaction tank 13 sprays the circulating wastewater pumped through the second circulation pipe 6 to the upper portion of the biofilm reaction tank through the plurality of nozzles 1-1. .

In addition, the first and second biofilm contact tanks (2,3) in the biofilm reaction tank (13) is built up in a multi-stage laminated structure in which the upper and lower pairs are repeatedly stacked up and down, thereby compacting while significantly increasing the purification efficiency of the wastewater. The installation site can be minimized.

In addition, the mixing of the inflow wastewater and the circulating wastewater in the settling tank 9 allows the concentration of organic substances to be diluted in the first and second biofilm contacting tanks 2,3, and the biochemical oxygen demand. It is easy to manage, and by increasing the hydraulic load rate and shear force of the influent wastewater, it is possible to continuously detach the microbial mucosa, and to prevent excessive growth and breeding of the microorganisms.

The present invention also eliminates the need for a separate oxygen supply device, such as a blower, by purifying the waste water during the natural fall process.

In addition, in the water treatment apparatus of the present invention, the air contact biofilm 2 is composed of a single-layered or multi-stage stacked structure in the biofilm reaction tank 17, and the titanium reaction tank 3 is located under the biofilm reaction tank.

And the upper part of the titanium reaction tank 3, the ultraviolet lamp 4 is positioned in a fixed state by the ultraviolet lamp fixing device (5).

And the precipitation tank 7 is located in the lower portion of the biofilm reaction tank 17, the purified water passing through the air contact biofilm 2 and the titanium reaction tank 3 is dropped.

In addition, the titanium reaction tank 3 may be positioned at the top of the biofilm reactor 17 to induce a reaction using solar heat.

Titanium reactor can be used to form a coating on the porous plate titanium and may be applied to the circular beads having a diameter of 3 ~ 5mm.

In the reaction vessel of the titanium material having the above configuration, the Tio ₂ electrons are transitioned from the valence band to the conduction band when UV is irradiated with UV having a band gap energy of more than the band gap on the Tio ₂ surface. Holes are created in the valence band.

The generated electron and hole is the diffusion go to Tio ₂ surface, the surface four adsorbed water or the OH of the Tio ₂ ^- and the and the hole reaction and may generate OH radicals for oxygen present in the water is reacted with E By generating O ₂ ^2- radicals, more OH radicals are generated to decompose organic materials on the surface of Tio ₂ , which is called a photocatalytic reaction. And OH radicals and O ₂ ^2- radicals are also produced by H ₂ O ₂ , which is produced as an intermediate product of the reaction. H ₂ O ₂ , HO ₂ and O ₂ consume the generated electrons to prevent recombination, thereby increasing the production of OH radicals. In photocatalytic reactions, OH radicals and O ₂ ^2- radicals are used as oxidants to oxidize organic materials.

Thus, according to the present invention, it is possible to minimize the installation site by compacting while significantly increasing the purification efficiency of the wastewater, and to reduce the load of the equipment by diluting the concentration of strong organic substances, and to manage the load according to the biochemical oxygen demand load. It is easy to remove the microbial mucosa continuously by increasing the hydraulic load rate and shear force of the influent wastewater, to prevent the excessive growth of microorganisms and the habitat of flies. There is an unnecessary effect.

In addition, freezing and drying the by-products when used as a feed for fish tank fish is excellent in the purification of the water quality has the effect of longer fish survival.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as provided by the following claims. I would like to clarify that those who have knowledge of this can easily know.

Claims (20)

A contact medium in which fibrous yarns of 0.01 mm or less are attached to a ciliary state of 100 mm or less in length on the outer circumferential surfaces of circular, plate and rope shapes. A wastewater collection tank 15 installed to collect wastewater; A biofilm reaction tank 13 in which a plurality of first and second biofilm contact tanks 2 and 3 are selectively installed in the vertical and horizontal directions of an inner surface of the collection hopper 4 having an upper portion and having a valve at a lower portion thereof; A settling tank 9 installed to settle the foreign matter in the first treated water of the wastewater collection tank 15 and the collection hopper 4; And, Water treatment apparatus using a contact medium consisting of a configuration comprising a waste water circulation portion 11 is installed to recycle the supernatant of the sedimentation tank (9) and the wastewater collection tank (150) to the biofilm reaction tank (13). According to claim 2, wherein the biofilm reactor 13, the water treatment apparatus using a contact medium, characterized in that the contact medium is laminated on the upper side via a multilayer interlayer film 20 inside. According to claim 2, wherein the biofilm reactor 13, the ciliated stationary phase contact medium and the ciliated fluidized bed contact medium are laminated on the upper side via a multi-layered middle film 20 inside, the stationary phase and the flow Phase contact media is a water treatment apparatus using a contact media, characterized in that the laminated repeatedly According to claim 2, wherein the biofilm reaction tank 13, the ciliated stationary phase contact medium and the ciliated fluidized bed contact medium are laminated on the upper side via a multi-layered intermediate film 20 on the inside, respectively, the stationary and fluidized bed Contact media is a water treatment apparatus using a contact media, characterized in that installed in the vertical direction long The contact medium of claim 5, wherein the biofilm reactor 13 has a ciliated fluidized bed contact medium installed in the vertical direction and is disposed so that one end thereof is deposited in the wastewater filled in the collection hopper. Water treatment device using The water treatment using contact media according to claim 2, wherein the settling tank (9) and the collecting hopper (4) are respectively connected to nitrogen and phosphorus treatment tank (17) which are installed to selectively treat nitrogen and phosphorus. Device The water treatment apparatus according to claim 2, wherein the sedimentation tank (9) is further provided with a flow tank (6) having a overflow wall (11) on an upper side thereof. 3. The collecting hopper (4) is provided with a plurality of nozzles (1-1) installed at the top to spray wastewater supplied from the first and second circulation pipes (5) and (6) at the top, and the discharge at the bottom. Sprinkling amount control valve is installed to adjust the water treatment apparatus using a contact medium, characterized in that the bypass unit is further provided to pass through a certain height The water treatment apparatus according to any one of claims 2 to 5, wherein the sedimentation tank, the collection hopper, the wastewater collection tank, and the nitrogen and phosphorus treatment tank are formed in a hopper type for discharging the optimum material. The water treatment apparatus using contact media according to claim 4, wherein the interlayer film 20 is formed in a plate shape, and a plurality of discharge holes are formed at one side thereof, and a plate or a protrusion is formed around the discharge hole. The water treatment apparatus using a contact medium as claimed in claim 2, wherein the collection hopper further includes a titanium reaction tank at a bottom thereof. The titanium reaction tank installed in the bottom of the collecting hopper is characterized in that the titanium bead is formed on the porous plate, and a round bead is formed in which titanium is coated while having a diameter of 3 to 5 mm inside. Water treatment device using contact media The water treatment apparatus using the contact medium according to claim 12, wherein the titanium reaction tank installed at the bottom of the collection hopper further includes an ultraviolet lamp at the top thereof. The method of claim 2, wherein the collecting foil is connected to a plurality of pipes in which wastewater is supplied to sequentially perform operations of operation, collection and discharge, and biofilm treatment tanks are respectively installed on the upper side thereof to correspond to each other. Water treatment device using contact media A water tank and a water tank in which the space portion is installed so that only a predetermined amount of water is stored in one side of the water tank; An ultraviolet lamp installed at an upper portion of the space part; A water treatment unit in which a titanium reactor is disposed at an upper portion thereof and a biofilm contact medium is disposed at an upper portion thereof through an intermediate layer at a lower side of the ultraviolet lamp; And, Water treatment apparatus using a contact medium including a pump and a pipe installed at the bottom of the space to be re-supplied to the water treatment water The water treatment apparatus according to claim 15, wherein the pipe is further provided with an air inlet at one side thereof. The water treatment apparatus according to claim 15, wherein the space portion is provided with a diaphragm for allowing a predetermined amount of water to be introduced into the space portion while maintaining a constant water level. The water treatment apparatus according to claim 15, wherein the space portion is formed in a lotus leaf shape and the biofilm contact media is stacked on the space. A feed used for feeding fish for fish tanks by freezing and drying the by-products treated by the water treatment apparatus of claim 1 to claim 18.