JP2006007065A - Waste water cleaning apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waste water cleaning apparatus for filtering waste water generated in the line for manufacturing laver and reusing cleaned water obtained by separating solid and liquid or discharging the cleaned water into river as cleaned water. <P>SOLUTION: The waste water cleaning apparatus has an inner tank installed inside an outer tank and having a cylindrical tube with no apertures and a filtration tube having a large number of fine apertures formed in the side wall and immersed underwater in use, both of which are vertically disposed. Rotation shafts to which spiral brushes for cleaning and transferring are planted are concentrically installed, and the lower end part of a space between the inner wall of the outer tank and the outer wall of the inner tank are closed, and a supply means of water to be treated is connected with the lower part of the inner tank. The outer tank is provided with a draining means of the filtration cleaned water, and the upper part of the inner tank is provided with a separated substance discharging means. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a wastewater purification device for the purpose of reusing purified water obtained by filtering wastewater generated in a laver production line and separating solid and liquid, or discharging it as purified water.

  Conventionally, purification and reuse of wastewater generated in a laver production line is normally performed, but a large amount of water is used for laver line processing (a large amount of water is used in a short time. For example, It is said that 1 liter of water is required for 1 piece of dry seaweed, so 50-100 liters per minute or more is used) and shredded raw seaweed with mince produces raw seaweed that becomes fine pieces. The raw seaweed passed through a normal filter plate (for example, a separation plate having micropores of 0.2 mm to 0.5 mm), and had a problem of being mixed into purified water. For example, when the treated water (purified water) that has been used once is reused, if the small pieces of fresh seaweed remain in the reused water, the old fresh seaweed (fine pieces) will be mixed into the new fresh seaweed, and a small amount However, when old seaweed was mixed, there was a risk of product quality degradation (quality degradation is inevitable).

  Also, the first half of the laver processing line (until mince, Fig. 3) uses a large amount of seawater because it mostly uses seawater. Therefore, if the seawater cannot be directly pumped up in the treatment process due to the location conditions of the factory, the wastewater during the line treatment must be purified and reused or reused.

Due to the above circumstances, the wastewater generated in the laver treatment process is purified and the seawater (at least 50 liters per minute) used in the initial stage of the treatment process is often supplied. However, due to the above circumstances, it was considered impossible to completely remove the micronori pieces with a simple device.
Japanese Patent No. 3453708

  As described above, it has been found that a large amount of water is required for the raw laver treatment process, but it has been difficult to purify this efficiently. As in the above-mentioned Patent Document 1, it is a current situation that a filtration device using inefficient primary and secondary filtration is used or reused while incompletely purified, and there is a possibility that old micronori pieces are mixed into the laver product. There was a problem related to product quality degradation.

  However, according to the present invention, the microholes for filtration of the filter cylinder are remarkably reduced, the total area of the micropores is made equal to or larger than the cross-sectional area of the hose for feeding the water to be treated, and the filter cylinder is accommodated in water. As a result, the above-mentioned conventional problems have been solved (a large amount of processing can be completely purified).

  In other words, the present invention provides an inner tank in which a cylinder with a non-perforated side wall and a filter cylinder having a large number of minute holes in the side wall and entering below the surface of the water are provided vertically inside the outer tank. In the inner tank, a rotating shaft in which a spiral brush for cleaning and transfer is implanted is installed concentrically, the lower end between the inner wall of the outer tank and the outer wall of the inner tank is closed, and the inner tank A wastewater purification apparatus characterized in that a means for supplying water to be treated is connected to the lower part, a drainage means for filtered purified water is provided in the outer tank, and a separator discharge means is provided in the upper part of the inner tank. Inside the outer tub, install an inner tub that has a cylinder with a non-perforated side wall and a filter cylinder that has many micropores in the side wall and enters the surface of the water when in use. In addition, a rotating shaft having a spiral brush for cleaning and transferring is installed concentrically, and the lower end portion between the inner wall of the outer tank and the outer wall of the inner tank is closed. A means for supplying water to be treated is connected to the lower part of the inner tank, a drainage means for filtered purified water is provided in the outer tank, a separator discharge means is provided in the inner tank, and the drainage means for filtered purified water is a foam. It is the waste water purification apparatus characterized by having connected with the water purification tank through the separation apparatus.

  In addition, the total opening area of the microholes of the filtration cylinder is equal to or greater than the cross-sectional area of the transfer hose for the water to be treated, and the drainage means is provided with a drainage tank outside the outer tank, Is communicated with the inside of the outer tub, and a water level adjusting means is provided at the communicating portion, and the base end side of the drain hose is connected to the lower portion of the drain tub.

  Furthermore, the foam separation device is a device in which the tip of the drainage hose is connected to the top plate of the top tube, and a foam outlet is provided, and a water outlet is provided on the lower side wall of the top tube, and the separated product is discharged. The means is a spiral brush provided in the inner tank, a discharge chamber and a discharge pipe connected to the upper end of the inner tank.

  According to another aspect of the present invention, an inner tank is installed inside the outer tank, and the inner tank is equipped with a spiral brush for cleaning and transfer, and the filtration part of the inner tank is located in water. This is a wastewater purification device.

  The purified water bubbles in the above contain relatively many substances that do not want to adhere to diatom or other raw laver, so removing this does not increase the concentration of the harmful substances in the reused water ( It has the same component concentration as the seawater used at the beginning), and there is no possibility of adversely affecting the raw nori no matter how many times it is used.

  The above described the drainage of the processing line using seawater (from the raw algae tank to the cleaning before cutting, FIG. 3). In the treatment line, fresh water is used after cutting (minching) and until the seaweed laver. In this case, the amount of drainage is also very large, so there are many cases where water is purified and reused and reused. That is, most of the water in the mixed solution is separated during laver. Since this fresh water drainage process is the same as the seawater drainage process, its description is omitted.

  According to the invention, since the total area of the micropores of the filtration cylinder is equal to or greater than the cross-sectional area of the hose that supplies the water to be treated, the water to be transferred is purified at a substantially constant flow rate. Thus, the loss during filtration can be minimized and the purification efficiency can be kept high.

  Therefore, since a large amount of water to be treated can be treated without stagnation, seawater in the raw laver treatment line is almost circulated, and much labor and cost are no longer required for seawater replenishment. . Moreover, since water quality adjustment (foreign matter separation, salt content adjustment, temperature adjustment, and decolorization treatment as necessary) can be performed during the purification treatment, there is no possibility that the quality of the used water will deteriorate every time it is reused. In other words, since purified water of a certain quality can be used, there is no great difference from the case where fresh seawater (fresh water) is used almost every time.

  Since the rotating shaft rotates, for example, at 300 to 500 revolutions per minute, the centrifugal force generated by the rotation of the spiral brush becomes a pressure when water passes through the micropores, and can pass more smoothly. Moreover, since the laver pieces are floating inside the filter cylinder, there is no possibility that the laver pieces will forcibly pass through the micropores.

  This invention is a rotation in which a spiral brush that cleans micropores and transfers separated materials is implanted inside an inner tank configured by providing a non-perforated cylinder at the top of a filter cylinder having a large number of micropores. Since the shaft is rotatably installed, the total area of the micropores in the filter cylinder is equal to or larger than the cross-sectional area of the hose for transferring the water to be treated, and the micropore diameter is 0.2 mm or less. There is an effect that the treated water can be purified at almost the same speed.

  By making the total area (filtration area) of the micropores as described above equal to or greater than the cross-sectional area of the hose, the filtration flow rate is controlled, and small pieces of raw nori (for example, 0.2 mm or more) become micropores. There is no clogging due to the suction, and there is an effect that it is transported upward along the inner wall surface of the filter cylinder.

  Since the raw seaweed in the above has a property of spreading in water, even if the width of the raw seaweed piece is 0.2 mm, the length is about 1 mm and is 0.2 mm or less (for example, 0.15 mm to Since a considerable resistance force is generated when clogging or passing through a 0.1 mm) micropore, such a situation cannot occur, and the water to be treated is purified like fresh water.

  Moreover, according to this invention, since the filtration cylinder can be adjusted so that it is always located in water, the laver pieces at the time of filtration are always in a floating state. Therefore, there is no risk of pressing the micro nori piece against the micropore with the tip of the spiral brush or crushing the micro nori piece, so there is no risk of pushing the micro nori piece out of the microhole even if the spiral brush rotates Absent.

  On the other hand, since water can pass freely even if it is a micro hole with a diameter of 0.1 mm, only water passes through the filter cylinder, and raw nori and other fine solids remain, which can be easily performed by one filtration. There is an effect that can be separated. In addition, since the spiral brush is always in sliding contact with the surface of the micropore, there is an effect that there is no possibility that the passage of the water will be blocked due to the tension of water, and there is no possibility that the fine pieces of fresh laver will block the micropore.

  In this invention, the inner tank is constructed upright in the outer tank by connecting a non-perforated transfer cylinder to the upper part of the filter cylinder having a large number of micropores having a diameter of 0.15 mm to 0.1 mm on the peripheral wall. The interior of the inner tank is equipped with a rotating shaft with a spiral brush having a cleaning and transfer function, and an inlet of water to be treated is provided at the lower part of the inner tank, and to the side wall of the outer tank, A filtration water drain tank was provided, a drain hose was connected to the drain tank, and the total area of the micropores of the filter cylinder was equal to or greater than the cross-sectional area of the transfer hose to constitute a filtration device with reduced filtration resistance. In this filtration device, the water level in the inner tank is always used higher than the upper end of the filtration cylinder, and the height of the water level can be adjusted.

  The top end of the discharge hose is connected to the top plate of the top foam separation cylinder, and the top plate is provided with a foam outlet, and the foam separation cylinder is installed upright in the water tank, and is attached to the lower end of the foam separation cylinder. An outlet for filtered water is provided.

  As described above, even the fine raw laver pieces are effectively and efficiently separated by the purification device, so that the filtered water is equivalent to the transparent water (seawater or fresh water) before use. Therefore, the filtered water (purified water) can be reused and reused, and there is no possibility of causing environmental pollution even if it is discharged as it is.

  When the purified water is colored, it can be decolorized by passing it through, for example, an activated carbon layer.

  The present invention will be described with reference to FIGS. 1, 2, 3, and 4. An inner tub 5 having a cylinder 6 formed of a hole side wall is continuously provided. A rotating shaft 7 is installed concentrically inside the inner tub 5, and is slidably contacted with the inner wall 5 a of the inner tub 5. In order to clean the solid matter and transfer it upward, a spiral brush 9 is planted, and a water supply chamber 11 for water to be treated is connected to the lower part of the inner tank 5, and a water supply hose is supplied to the water supply chamber 11. 8 tips are connected. A water purification tank 12 is provided on the outer upper part of the outer tank 1, a communication hole 13 is provided in the water purification tank 12 and the outer tank 1, and a purification device 10 is connected to the base end of a discharge hose 14 to the water purification tank 12. Configured. A water level adjusting plate 37 is attached to the communication hole 13 so as to be movable up and down.

  The tip of the discharge hose 14 is connected to the top plate 18 of the top foam removal cylinder 16, a foam outlet 17 is provided in the top plate 18, and a discharge port 19 is formed in the lower side wall of the foam removal cylinder 16 to remove the foam. Apparatus 15 was configured. In the figure, 20 is a motor, 21 is a water purification tank, 22 is a discharge chamber for separated matter (mainly small seaweed pieces) installed at the top of the outer tub 1, 23 is a discharge pipe, 24 is a handle, 41 is a drain pipe, and 42 is a separation. It is an extrusion blade of a product.

  The filter cylinder 4 of the present invention is, for example, a stainless thin plate provided with a large number of minute holes (hole diameter of 0.2 mm or less). When the minute holes 3 are drilled, the burrs 3a are formed as shown in FIG. Since it may be possible, when the filter cylinder 4 is formed, the burr 3a side needs to be outside.

  In the said Example, waste_water | drain collects in the treated water tank 26 from each place of a raw nori processing line. Thus, the water to be treated enters the water supply chamber 11 from the treated water tank 26 through the feed hose 8 as shown by an arrow 28, enters the filter cylinder 4 through the communication hole 27 as shown by an arrow 29, and shows an arrow 30. As described above, it passes through the microhole 3 on the side wall of the filter cylinder 4 and enters the outer tank 1, and from the outer tank 1 passes through the communication hole 13 as indicated by an arrow 31 and enters the water purification tank 12.

  The purified water that has entered the water purification tank 12 enters the bubble collecting cylinder 16 through the discharge hose 14 as indicated by an arrow 32, and then enters the water purification tank 21 from the discharge port 19 at the lower end of the bubble collecting cylinder 16 as indicated by an arrow 33. to go into. Foam is mixed in the purified water in the discharge hose 14, but the water and the foam 25 are separated in the foam collecting cylinder 16, and the foam 25 rises as indicated by an arrow 35, from the foam outlet 17. It is discharged to the outside through the hose 43 as indicated by an arrow 36. In the above, when the purified water enters the water surface 34 of the water purification tank 22, the bubbles 25 are separated (the bubbles float on the water surface because of the light weight), and only the bubbles 25 are raised and pushed out to the hose 43 as the amount of bubbles increases. It is.

  In the said Example, since the water level 38 was made higher than the height of the filter cylinder 4 (FIG. 1), since the raw nori piece mixed in to-be-processed water is in a floating state, it is beaten by the spiral brush 9 and raises.

  When the water level 38 is set lower than the upper edge of the filter cylinder 4, raw laver pieces in the water to be treated are in a state of closing the micropores 3 and adhere to the inner wall of the filter cylinder 4, and are pressed by the spiral brush 9 to be put into the outer tank. Extrusion into 1 or movement by the spiral brush 9 becomes difficult.

  In addition, since the total area of the micropores is equal to or larger than the cross-sectional area of the feeding hose 8, the filtration resistance is small, and the filtration can be performed smoothly, quickly and efficiently.

  As shown in FIG. 3, the waste water treatment apparatus of the present invention collects and purifies waste water from, for example, a foreign substance separation device, a cleaning device, a thermal generator or a cleaning machine after cutting, and the purified water is removed from the outer tank. To store in a water purification tank.

  As shown in FIG. 3, the drainage from the laver processing line is seawater on the left side and fresh water on the right side across the mince. Therefore, seawater drainage and freshwater drainage are purified separately. If the seawater drainage is purified, it can be used again with the same quality as seawater. On the other hand, fresh water drainage can also be used, but in areas where fresh water is abundant, it is often the case that it is disposable only once.

  However, in general, since there is a tendency to save water, it is more likely to be separately purified as shown in FIG.

  The quality of the purified water taken out from this water purification tank is adjusted as necessary. In order to take out purified water from the water purification tank 22, it is fed from a submersible pump 39 in the water purification tank to a raw algae tank, a cleaning device, etc. that require seawater. Also, the purified water is fed from the fresh water purification tank to the washing machine or the thermal generator that needs fresh water as indicated by arrow 40 and used in a circulating manner. Although the quality adjustment may not be necessary, it can be performed from salt adjustment to temperature adjustment.

Explanatory drawing which abbreviate | omitted a part of Example of this invention and cut down a part. (A) The front view which similarly cut | disconnected a part of inner tank, (b) The partial cross-section enlarged view of a filtration cylinder similarly. The block diagram which similarly shows the use system of the apparatus of this invention. Similarly explanatory drawing of the Example of a bubble cylinder and a water purification tank.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer tank 2 Bottom plate 3 Micro hole 4 Filter cylinder 5 Inner tank 6 Cylinder 7 Rotating shaft 8 Feeding hose 9 Spiral brush 10 Water purifier 11 Water supply chamber 12 Water purifier 13 Communication hole 14 Discharge hose 15 Defoamer 16 Foam cylinder 17 Foam outlet 18 Top plate 21 Water purification tank

Claims (7)

  Inside the outer tub, install an inner tub that has a cylinder with a non-perforated side wall and a filter cylinder that has many micropores in the side wall and enters the surface of the water when in use. In addition, a rotating shaft in which a spiral brush for cleaning and transfer is installed is installed concentrically, the lower end between the inner wall of the outer tub and the outer wall of the inner tub is closed, and water to be treated is placed under the inner tub. The drainage purification apparatus is characterized in that the outer tank is connected with filtered water purifying means and the separated tank discharging means is provided on the upper part of the inner tank.   Inside the outer tub, install an inner tub that has a cylinder with a non-perforated side wall and a filter cylinder that has many micropores in the side wall and enters the surface of the water when in use. In addition, a rotating shaft in which a spiral brush for cleaning and transfer is installed is installed concentrically, the lower end between the inner wall of the outer tub and the outer wall of the inner tub is closed, and water to be treated is placed under the inner tub. In this case, the outer tank is provided with a filtered purified water draining means, the inner tank is provided with a separation discharge means, and the filtered purified water draining means is connected to a purified water tank via a foam separator. Wastewater purification device characterized by that.   The drainage purification apparatus according to claim 1 or 2, wherein the total opening area of the microholes of the filter cylinder is equal to or greater than the cross-sectional area of the transfer hose for the water to be treated.   The drainage means is provided with a drainage tank on the outside of the outer tank, and the drainage tank communicates with the inside of the outer tank, and a water level adjusting means is provided at the communicating portion, and the base end side of the drainage hose is connected to the lower part of the drainage tank. The drainage purification apparatus according to claim 1 or 2, wherein the apparatus is connected.   3. The foam separating apparatus according to claim 2, wherein a top end portion of the drainage hose is connected to a top plate of the top cylinder, a foam outlet is provided, and a water outlet is provided on a lower side wall of the top cylinder. Waste water purification equipment.   The drainage purification apparatus according to claim 1 or 2, wherein the separated material discharge means is a spiral brush provided in the inner tank, a discharge chamber connected to the upper end of the inner tank, and a discharge pipe.   A drainage purification apparatus, wherein an inner tank is installed inside an outer tank, and a filtration brush of the inner tank is positioned in water in the purification apparatus in which a spiral brush for cleaning and transfer is installed in the inner tank.

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