JP6425217B1 - Water treatment equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water treatment apparatus which is more compact than before, which can be introduced to a small-scale business site, and which is also multifunctional and which utilizes microorganisms. SOLUTION: An inner cylinder 2a having an opening 2b at the lower end is disposed inside a tank main body 1 which can be filled with a filter medium, and an overflow pipe 5 and a bypass communicating with the outside of the tank main body 1 from the inner cylinder 2a. By providing the pipe 4a and configuring the water treatment apparatus, the treated water is supplied from the upper part of the tank body 1 and is made to flow from the opening 2b into the inner cylindrical portion 2a, via the overflow pipe 5 or the bypass pipe 4a. The mixture is returned to the treated water tank 8 and circulated between the treated water tank 8 and the tank body 1 until it is sufficiently purified. Further, by opening and closing the valve 3a provided in the bypass pipe 4a, it is possible to make a region above the valve 3a in the tank main body 1 a sprinkling bed or to make an immersion filter bed. [Selected figure] Figure 1

Description

  The present invention relates to a water treatment apparatus for purifying waste water mainly used for processing meat and fish using microorganisms, and in particular, a compact waste water purification treatment tank adapted to small-scale business establishments. It relates to a water treatment device.

  A treatment method for decomposing organic matter contained in waste water into microorganisms and purifying it is widely practiced. Microorganisms used herein include aerobic microorganisms that live in an environment where oxygen is present, and anaerobic microorganisms that live in an environment where oxygen is not present.

  Aerobic treatment using aerobic microorganisms is a large-scale sewage treatment that decomposes organic matter while supplying foamy air, that is, aeration, to microorganisms suspended in treated water or attached to the surface of filter media. Adopted for small-scale wastewater treatment such as septic tanks.

  In addition, anaerobic treatment using an anaerobic microorganism is adopted for waste water treatment containing a high concentration of organic matter, and has the following advantages as compared with aerobic treatment. (1) Since aeration is unnecessary, it is useful from the viewpoint of energy saving. (2) It is possible to recover methane and organic acids. (3) The amount of sludge generated is smaller than aerobic treatment.

Many prior art have been disclosed in the field of water treatment with microorganisms. For example, Patent Document 1 stipulates that the concentration of metal salt in the reaction tank is specified based on the amount of COD _Cr of organic wastewater, and stable by changing the concentration of metal salt to COD _Cr of organic wastewater depending on the operation time. There is disclosed a waste water treatment method which performs various driving start-up and treatment and suppresses running cost.

  Further, in Patent Document 2, an anaerobic treatment reactor in which a carrier to which an anaerobic microorganism is attached is stored, and treated water is passed, and a microorganism adhesion amount determination mechanism that determines the adhesion amount of the anaerobic microorganism to the carrier. And the flow rate control mechanism for controlling the flow rate of the treated water to the anaerobic treatment reactor based on the determination result of the microorganism adhesion amount determination mechanism, and the anaerobic of the carrier based on the determination result of the microorganism adhesion amount determination mechanism. An apparatus for treating organic wastewater is disclosed, which comprises a control system for controlling the amount of microorganisms that supplies a promoter promoting adhesion of sexual microorganisms to the anaerobic treatment reactor.

  In addition to the above-mentioned prior art documents, a large number of prior art are disclosed for each component of the apparatus, such as the structure of the treatment tank, as the water treatment apparatus utilizing microorganisms. However, for example, in the fish processing industry, there is a large potential demand for compacted water treatment systems given that small-scale establishments are scattered in the vicinity of fishing ports in various places. However, the devices disclosed in the above two construction techniques all require various types of equipment, and are difficult to apply to operations in small-scale offices.

JP, 2017-029882, A JP, 2016-163855, A

  Therefore, an object of the present invention is to provide a water treatment apparatus that is more compact than before, can be introduced to small-scale business offices, is multifunctional, and utilizes microorganisms.

  In view of the above problems, the present invention fills a carrier for allowing microorganisms, referred to as filter media, to be inhaled, and the structure of a tank for passing wastewater to be treated, an aeration mechanism, and an object of treatment As a result of earnestly studying the water circulation mechanism and so on.

  That is, according to the present invention, there is provided a tub body having a cylindrical shape, and a tub which is disposed inside the tub book so that the direction of the central axis is substantially the same as the tub body, and an opening is provided at the lower end. An inner cylindrical body having a shape, a treated water tank storing treated water to be treated, treated water introducing means for introducing the treated water from the top of the tank body, and a bottom portion of the tank body The treated water which has flowed into the interior of the inner cylindrical body from the tank main body via the opening from the aeration means provided and the outside of the tank main body has reached the vicinity of the upper end of the inner cylindrical body And at least one bypass disposed between the opening and the overflow pipe and communicating with the inside of the inner cylinder and the outside of the tank body. A pipe, the treated water flowing out from the overflow pipe and the bypass pipe is introduced into the treated water tank And a reflux tube, the space between the inner cylinder member and the tank body is water treatment apparatus filter material made by adhering microorganisms characterized by comprising filled in the surface.

  Further, the present invention is the above water treatment apparatus, wherein the bypass pipe is provided with an opening / closing means for closing and opening the flow path.

  Further, the present invention is the water treatment apparatus as described above, wherein the filter medium is at least one selected from oyster shell, porous ceramic, polymer material compact, and polymer material foam.

  Further, the present invention is the water treatment apparatus described above, wherein at least one of the treated water introducing means and the aeration means has a hoop structure in which a pipe is formed in an annular shape.

  Further, according to the present invention, the treated water introducing means has a plate-like member attached to the lower part of the opening of the pipe through which the treated water flows out in a direction substantially orthogonal to the direction in which the treated water flows out. The water treatment apparatus is characterized in that it comprises a defoaming means capable of causing the treated water to be splashed by collision with the plate-like member.

  Further, according to the present invention, an air vent pipe communicating with the tank body and the reflux pipe is provided at an upper portion of the overflow pipe in the tank main body, and the air vent pipe has the reflux pipe side and the tank main body side. The water treatment apparatus is characterized in that the water supply device is provided with an inclination between the horizontal side or the reflux pipe side is higher than the tank body side.

  The water treatment apparatus of the present invention, as described above, includes the tank body and the inner cylinder provided inside the tank body and having the opening at the lower end, so the object of treatment stored in the treatment water tank When the treated water flowing into the inner cylinder from the opening of the inner cylinder reaches the overflow pipe or bypass pipe provided in the inner cylinder by pouring the treated water from above the tank body Since the system is configured to return to the treatment water tank, the treatment water can be circulated between the tank body and the treatment water tank until it is sufficiently purified.

  And, the opening and closing means for closing and releasing the bypass pipe is provided in the bypass pipe, and by closing the bypass pipe, the tank main body until the water level of the treated water reaches the overflow pipe Since almost the entire interior of the filter can be filled with treated water, the entire filter medium is immersed in the treated water, resulting in the state of an immersion filter bed.

  In addition, when the bypass pipe is opened, the treated water flows out from the pipe pipe, so the boundary of the pipe pipe position, the upper part of the tank body, the treated water flows down while covering the surface of the filter medium It becomes a state and the lower part of the tank body becomes an immersion filter bed. That is, one water treatment apparatus can be provided with the functions of both a water filtration filter bed and an immersion filter bed. In addition, anaerobic treatment becomes possible by stopping aeration, and by stopping aeration while the bypass pipe is opened, both aerobic treatment in the water filtration filter bed and anaerobic treatment in the immersion filter bed are possible. Function can be expressed.

  In the water treatment apparatus of the present invention, it is preferable to use an oyster shell, a porous ceramic, a polymer material molded body, a polymer material foam or the like as the filter medium, but basically it is a material having a sufficiently large specific surface area The required amount of microorganisms per weight can be secured, and these other materials can also be used. Moreover, it is also possible to fill a plurality of types of filter media in layers in the height direction in the tank body.

Among the above-mentioned filter media, particularly oyster shells have the following features and are extremely useful as filter media for the water treatment apparatus of the present invention.
(1) The oyster shell contains a large amount of calcium so that it is used as oyster shell organic lime, and therefore, when immersed in acidic water, it exudes an alkaline component and exhibits a function of gently neutralizing the acidic water Do.
(2) In addition to calcium, oyster shells contain minerals such as phosphoric acid, potassium, and magnesium, and also contain trace amounts of manganese, boron, zinc, etc., and thus become a nutrient source of microorganisms.
(3) Oyster shells are consumed by microorganisms, but are easily replenished, and oyster shells themselves are wastes generated in the fishery industry and do not lead to increased costs.
(4) As the oyster shells are consumed by the microorganisms as described above, replenishment is necessary, but periodic replacement work is not necessary.

  In the water treatment apparatus of the present invention, the aeration means is provided at the bottom of the tank main body so that aeration can be appropriately performed, but it is possible to provide a hoop structure to the aeration means. Here, the hoop structure is one in which a portion from which air is blown out of a pipe for sending air from the compressor is annularly formed. Although such aeration means is provided with a plurality of through holes whose diameter is smaller than the diameter of the tube at necessary places of the tube for sending air, and fine bubbles are dispersed in the tank, the tube is formed in an annular shape Otherwise, the end of the tube has to be closed, but when the end-closed tube is provided with a plurality of through holes, the air pressure near the closed end tends to increase, and the air for each through hole is increased. The amount of spouting may vary.

  When such a phenomenon occurs, the distribution of air bubbles in the tank becomes uneven, and the processing efficiency of the entire apparatus decreases. Therefore, in the present invention, a large number of through holes are provided in the annularly configured pipe to Use as a means.

  Further, by providing a plurality of treatment water introduction means, that is, nozzles for injecting the treatment water into the tank main body, the distribution of the treatment water in the sprinkling filter bed can be made uniform, but also in this case the aeration means and Similarly, by mounting the tube in an annular configuration at an appropriate position, the uniformity of the treatment water introduction is improved.

  Furthermore, in the water treatment apparatus of the present invention, a plate-like member may be attached under the nozzle, and a defoaming means may be used in which treated water flowing out from the nozzle collides with the plate-like member to make it splash. When the treated water is introduced directly into the tank body from the opening of the pipe, the treated water entrains air and bubbles are generated, but this phenomenon can be suppressed by making it into droplets. Similar to a shower, even if the nozzle is provided with a large number of fine through holes, the same defoaming effect can be obtained, but the treated water also contains solid floats, and frequent clogging of the through holes can occur. It is desirable to use such a defoaming device because of its nature.

  In the water treatment apparatus of the present invention, since the tank body is not a closed structure, the air discharged from the aeration tube into the tank body does not have a high pressure in the layer body, but for the sake of safety. Preferably, an air vent pipe is provided at a position above the overflow pipe for communicating the tank body with the return pipe. The air vent pipe may be provided in the horizontal direction, but since there is a possibility that droplets or bubbles of treated water injected from the means for introducing treated water may flow from the air vent pipe into the reflux pipe, it is connected to the reflux pipe It is desirable for the part being provided to have a higher slope than the side connected to the vessel body. In addition, if the air vent pipe is in communication with the outside of the tank body, it is suitable for the purpose, so it is not necessary to connect it to the reflux pipe.

  The figure which shows the structure of an example of the water treatment apparatus of this invention.   The figure which shows an example of the treated water introduction means of the water treatment apparatus of this invention.   The perspective view of an example of the defoaming means of the water treatment apparatus of this invention.   The figure which shows an example of the aeration means of the water treatment apparatus of this invention

  Next, embodiments of the present invention will be described with reference to specific drawings.

  FIG. 1 is a view showing a configuration of an example of a water treatment apparatus of the present invention. In FIG. 1, 1 is a tank body, 2a is an inner cylinder, 2b is an opening, 3a is a first valve, 3b is a second valve, 4a is a bypass pipe, 4a is a drain pipe, 5 is an overflow pipe, 6 is an air vent pipe, 7 is a reflux pipe, 8 is a treated water tank, 9 is a pump, 10 is a treated water injection pipe, 11a and 11b are treated water introduction means, 12 is an air pipe, 13 is an aeration means, 14 is a maple , 15 is a settling tank.

  The annular members such as the tank body 1 and the inner cylindrical body 2a may be any material provided that they have sufficient mechanical strength, but in consideration of weight reduction, FRP (fiber reinforced plastic) is preferable. As shown in the figure, in this example, one bypass pipe is provided at the lower part of the overflow pipe 5, but it is to be understood that the number of bypass pipes can be increased. It is not. The drain pipe 4b shown in FIG. 1 is not used in a normal operation state, so the second valve 3b is closed. In the example of FIG. 1, the air vent pipe 6 is provided, but for the reason described above, an inclination is provided such that the left side in the figure is high.

  As it is possible to use wire mesh or punching metal for the maple child 14 and load the filter medium thereon, sufficient mechanical strength is also required. The dashed-two dotted line shown in the figure shows the approximate boundary of the area which becomes a water filter bed or an immersion filter bed by opening and closing the first valve 3a. That is, when the valve 3a is closed, both areas A and B become immersion filters, and when the first valve 3a is opened, the area B becomes immersion filters and the area A becomes water filter beds.

  Further, as described above, in the water treatment apparatus of the present invention, different filter media can be packed in layers, for example, the area of A is filled with oyster shell, and the area of B is made of plastic filter medium. It is possible to fill. The treated water that has passed through the filter bed is returned to the treated water tank 8 via the reflux pipe 7 and circulated between the treated water tank 8 and the tank body 1 until it is sufficiently purified, and solids are precipitated in the settling tank 15 After being released to the environment. In addition, it is also possible to install the process water tank 8 and the sedimentation tank 15 in the lower part of the tank main body 1, and to reduce the installation area of the whole apparatus, and can respond to installation to a narrow office.

  Fig. 2 is a view showing an example of treated water introducing means of the water treatment apparatus of the present invention, and Fig. 2 (a) is a plan view of the tank body 1 and treated water introducing means, and Fig. 2 (b) is a tank body It is a front view of a partial cross section of 1 and a treated water introduction means. In FIG. 2, 10a is a hoop structure portion of the treated water injection pipe, 11c is treated water introducing means, 16a, 16b and 16c are maintenance open holes, and 17a, 17b and 17c are caps. During the operation, the upper end of the inner cylindrical body 2a and the maintenance opening holes 16a, 16b and 16c are covered.

  As shown in FIG. 2, the treated water injection pipe 10 is connected to the hoop structure 10 a of the treated water injection pipe in which the pipe is formed in a square ring, and the inside of the tank body 1 is connected via this portion Inject treated water. Further, the caps 17a, 17b and 17c are provided to facilitate the removal operation when the solid matter contained in the treated water adheres to the inside of the pipe, and the caps 17a, 17b and 17c are attached in a detachable manner.

  FIG. 3 is a perspective view of an example of the defoaming means of the water treatment apparatus of the present invention. In FIG. 3, 18 is a nozzle, 19 is a support member, 20 is a plate-like member, 21 is a water flow, and 22 is water which has become droplets. When the treated water is injected straight into the tank body 1, the treated water may entrain air and generate bubbles, but as shown here, the water stream 21 is caused to collide with the plate member 20, and the droplets 22 and By doing so, the generation of bubbles can be suppressed. When the water flow in the nozzle 18 becomes turbulent, the water flow 21 discharged from the nozzle 18 spreads more than the inner diameter of the nozzle 18, so the diameter of the plate-like member is desirably about three times or more the nozzle inner diameter.

  FIG. 4 is a view showing an example of the aeration means of the water treatment apparatus of the present invention, and FIG. 4 (a) is a view of the attachment state of the aeration means seen from the lower side of the tank body 1; b) is an AA cross section. In FIG. 4, 23 is a through hole. As shown here, the air diffusion means 13 according to the water treatment apparatus of the present invention has the air pipe 12 introduced to the lower surface of the tank main body 1 via the inner cylindrical body 2 in a ring shape. It is connected to the part of the hoop structure and air is released from the through hole 23.

  The through holes are preferably attached downward as shown in FIG. 4 (b). The reason is that if it is turned upwards, suspended solids contained in the treated water may adhere and clog, and by providing them downward, if solids adhere, air from the compressor at high pressure Can be sent and blown off. Further, in consideration of the distribution of bubbles in the tank body 1, the angle θ shown in FIG. 4B is preferably 30 ° to 60 °.

  As described above, according to the present invention, the treated water is circulated between the treatment tank and the tank body which is filled with the filter medium and can exhibit both the function of the water filtration filter bed and the function of the immersion filter bed. It is possible to provide a water treatment apparatus which is more compact than before and which can be installed even in a narrow place. The present invention is not limited to the above-described embodiment, and does not deviate from the scope of the present invention including various modifications and corrections which can be conceived by those who have ordinary knowledge in the field of the present invention. Of course, even if there is a design change of the range, it is included in the present invention.

1 Tank body 2a Inner cylinder 2b Opening 3a First valve 3b Second valve 4a Bypass pipe 4b Drain pipe 5 · Overflow pipe 6 · · · Air bleed pipe 7 · · · · · · · · reflux pipe 8 · · · treated water tank 9 · · · pump 10 · · · treated water injection pipe 10a · · · Hoop structure 11a, 11b of the treated water injection pipe 11C ... treated water introduction means 12 ... air tube 13 ... air diffuser means 14 ... drainboard 15 ... sedimentation tank 16a, 16b, 16c ... maintenance opening hole 17a, 17b, 17c · · · Cap 18 · · · Nozzle 19 · · · Support member 20 · · · plate-like member 21 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 22

Claims (5)

A tank body having a cylindrical shape,
An inner cylindrical body having a cylindrical shape which is disposed inside the tank main body so that the direction of the central axis is the same as that of the tank main body, and an opening is provided at the lower end portion;
A treated water tank for storing treated water to be treated;
Treated water introducing means for introducing the treated water from the upper portion of the tank body;
A diffuser provided at the bottom of the tank body;
It is provided in order to overflow the treated water which has flowed into the inside of the inner cylindrical body from the tank body via the opening and reached the upper end of the inner cylindrical body to the outside of the tank body. An overflow pipe, at least one bypass pipe disposed between the opening and the overflow pipe, communicating with the inside of the inner cylindrical body and the outside of the tank body, and provided with an opening / closing means ; And a reflux pipe for introducing the treated water flowing out from the overflow pipe or the bypass pipe into the treated water tank , wherein microorganisms are attached to the surface in the space between the tank body and the inner cylinder . A water treatment apparatus characterized in that a filter medium is filled to form a biological filter bed,
In the state where the opening and closing means is closed, the whole of the filler filter bed is treated as the immersion filter, and in the state where the opening and closing means is released, the filled filter bed portion of the upper portion between the bypass pipe and the overflow pipe is A water treatment apparatus characterized in that it is a water filter bed treatment. The water treatment apparatus according to claim 1, wherein the filter medium is at least one selected from oyster shell, porous ceramic, polymer material compact, and polymer material foam.   The water treatment apparatus according to any one of claims 1 or 2, wherein at least one of the treated water introducing means and the aeration means comprises a hoop structure in which a pipe is formed in an annular shape. .   A plate-like member is attached to the lower part of the opening of the pipe through which the treated water flows out in the direction perpendicular to the direction in which the treated water flows out, and the treated water introduction means is attached to the plate-like member The water treatment apparatus according to any one of claims 1 to 3, further comprising a defoaming means capable of causing the treated water to be splashed by a collision.   An air vent pipe communicating with the tank body and the reflux pipe is provided in an upper portion of the overflow pipe in the tank body, and the air vent pipe is horizontal between the reflux pipe side and the tank body side, Or the said reflux pipe side is equipped with the inclination which becomes higher than the said tank main body side, The water treatment apparatus in any one of the Claims 1-4 characterized by the above-mentioned.

Images