JP2006187683A - Neutralization treatment device for waste water after washing of dialysis apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a neutralization treatment device for waste water after the washing of a dialysis apparatus which can deal with enlargement though being a relatively simple structure, is easily maintainable, reduces the unneeded consumption of a neutralizer, and can stably and securely perform treatment for waste water after the washing of a dialysis apparatus. <P>SOLUTION: The neutralization treatment device comprises: a tower body 1 where the lower part 1a in the tower is provided with a drainboard 11 for dewatering, the tower bottom part 1b at the lower part of the drainboard 11 is provided with a liquid outflow tube 12, and the upper part 1c of the tower is provided with a liquid distributor 14 of sprinkling waste water 6 after the washing of a dialysis apparatus; and a solid neutralizer 2 as granular matter dissolved in water, exhibiting acidity or alkalinity and packed onto the drainboard 11. The waste water 6 after the washing of the dialysis apparatus is sprinkled from the liquid distributor 14 so as to wet the neutralizer 2 and is made to flow down, and, by the dissolution of the neutralizer 2, neutralization treatment is performed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a dialysis machine cleaning wastewater neutralizing apparatus for neutralizing the pH of dialysis equipment and cleaning wastewater.

In hospitals, clinics, and the like where artificial dialysis is performed, dialysis equipment is sterilized and washed through processes such as water washing, acid washing, water washing, drug washing, and water washing after the completion of dialysis. Acid cleaning water such as acetic acid is used for the acid cleaning, and alkaline cleaning water such as sodium hypochlorite is used for the chemical cleaning. Along with this, washing wastewater inclined to acidity and washing wastewater inclined to alkalinity are discharged.
In some hospitals, clinics, etc., sterilization cleaning is performed only by acid cleaning such as acetic acid, and accordingly, waste water that is inclined toward acidity is discharged. Since the dialysis machine washing wastewater does not fall within the water quality standard, it is discharged to the sewer after neutralization. The present applicant has previously proposed a device for neutralizing the dialysis machine washing wastewater inclined to acidity (see Patent Document 1).

JP 2002-282869 A

However, the technique disclosed in Japanese Patent Laid-Open No. 2002-282869 (Prior Art 1) has the following problems.
Since a semi-cylindrical pH controller is incorporated in a line in the middle of the dialysis machine washing and drainage pipe, it has been limited to relatively small hospitals having about 20 beds. As the number of beds increased, it became difficult to fit in the middle of the piping, and the neutralization treatment was sometimes insufficient. The flow rate and flow velocity of the actual dialysis machine washing wastewater flowing through the pipe always fluctuate. When the flow rate of the washing wastewater is small, it often flows down along the wall surface of the pipe, and even if the flow rate is high, the pipe is filled, and when it is not full, it tends to drift. This may be due to the fact that the drainage route leading to the pH controller is branched, but in the first place, the increase in the number of beds makes it easier to create a drift. Even if a pH adjuster is installed in the middle of the washing drainage pipe of a dialysis machine that is vertically arranged from the upper floor to the lower floor, the washing wastewater flows down in the pH controller in a drift state, so that it is difficult to obtain a predetermined effect. Further, the neutralizing agent as a solid pH adjusting agent may not be consumed evenly, and the consumption may be increased unnecessarily.
Furthermore, since it is installed in the middle of the dialysis machine washing drainage pipe, the dialysis machine washing effluent may sometimes be left in the pH adjuster. It was dissolved and thinned.

  The present invention solves the above-mentioned problems, can cope with an increase in size with a relatively simple structure, is easy to maintain, reduces unnecessary consumption of the neutralizing agent, and stably discharges washing water from dialysis equipment. It is another object of the present invention to provide a neutralization treatment apparatus for dialysis equipment washing waste water that can reliably treat waste water.

In order to achieve the object, the gist of the invention described in claim 1 is that a draining insulator plate is provided at the lower part of the tower, a liquid outflow pipe is provided at the bottom of the tower, and a dialysis is provided at the upper part of the tower. A tower main body (1) provided with a liquid distributor for spraying the washing waste water of the equipment, and a solid neutralizing agent (2) which is dissolved in water and becomes acidic or alkaline and filled on the insulator plate. ), And the washing effluent of the dialysis device is sprinkled down from the liquid distributor so as to wet the neutralizing agent, and neutralization treatment is performed by dissolving the neutralizing agent. It is in the neutralization processing equipment of equipment washing wastewater.
The gist of the invention described in claim 2 is that a draining insulator plate is provided at the lower part of the tower, a liquid outflow pipe is provided at the bottom of the tower below the insulator plate, and washing waste water from the dialysis equipment is sprinkled at the upper part of the tower. A column main body (1) provided with a liquid distributor, a granular material which dissolves in water and exhibits alkalinity, is filled with a solid neutralizing agent (2) filled on the insulator plate, and is used for washing and draining dialysis equipment. An on-off valve (3) provided in the middle of the main pipe, an upstream branch pipe (4) branching from the main pipe upstream of the on-off valve substantially horizontally or downwardly and leading to the liquid distributor; A downstream branch pipe (5) connected to the main pipe downstream from the on-off valve with a horizontal or downward inclination from the liquid outflow pipe, or a miscellaneous drain pipe with a substantially horizontal or downward inclination from the liquid outflow pipe. A downstream branch pipe (5) connected to the dialysis device from the liquid distributor so as to wet the neutralizing agent. Water spray caused to flow down, in neutralization apparatus dialysis machine washing waste water, characterized in that forming the neutralized by the dissolution of said neutralizing agent.
A neutralization treatment apparatus for dialysis equipment washing wastewater according to a third aspect of the present invention is the neutralization treatment apparatus according to the second aspect, wherein the neutralizing agent is made of particulate matter mainly composed of magnesium hydroxide or magnesium oxide, and the liquid distributor is a pipe. It consists of a liquid distribution pipe in which a large number of through holes are formed on the lower surface side.
According to a fourth aspect of the present invention, there is provided a neutralization apparatus for washing effluent from dialysis equipment according to the third aspect, wherein the outer shape of the tower body is formed into a substantially rectangular shape having a narrower width than the length and width of the front plate. One liquid distribution pipe is disposed so as to cross a substantially intermediate point of the depth width of the outer shape of the main body in a straight line.

As in the first aspect of the invention, a liquid distributor is provided with a draining insulator plate at the bottom of the tower, a liquid outflow pipe at the bottom of the tower below the insulator plate, and the washing effluent of dialysis equipment is sprinkled at the top of the tower. A column main body (1) provided with a solid neutralizing agent (2) which is dissolved in water and becomes acidic or alkaline and is packed on the insulator plate. If the neutralizing treatment is performed by dissolving the neutralizing agent by spraying the washing effluent of the dialysis device from the liquid distributor so as to wet the agent, and the neutralizing treatment is performed by dissolving the neutralizing agent, the column is separated from the washing drain pipe line of the dialysis device. Since the main body can be installed, it can easily cope with a large dialysis machine washing wastewater volume despite its simple structure. Maintenance can also be handled easily. The neutralizing agent is packed on the insulator plate in the form of a packed tower and drained by the insulator plate, thereby reducing unnecessary consumption of the neutralizing agent. Washing waste water from dialysis equipment can be treated stably and reliably.
As in the invention of claim 2, the on-off valve (3) provided in the middle of the washing and drainage main pipe of the dialysis machine and the main pipe on the upstream side of the on-off valve are branched substantially horizontally or downwardly and branched. An upstream branch pipe (4) leading to the liquid distributor, and a downstream branch pipe (5) connected to the main pipe downstream from the on-off valve by being inclined horizontally or downward from the liquid outlet pipe, or If the downstream branch pipe (5) connected to the miscellaneous drainage pipe at a substantially horizontal or downward inclination from the liquid outflow pipe is provided, the washing drainage of the dialysis machine can be easily treated using the gravity drop. As in the invention of claim 3, when the neutralizing agent is made of a granular material containing magnesium hydroxide or magnesium oxide as a main component, no ak is produced during the acid neutralization treatment, and the particle size is moderate. Excellent in handling and handling. If the liquid distributor is composed of a liquid pipe having a large number of through holes formed on the lower surface side of the pipe, the liquid distributor becomes simple. As in the invention of claim 4, the outer shape of the tower main body is formed into a substantially rectangular shape having a narrower depth width than the length and width of the front plate, and a substantially intermediate point of the depth width of the tower main body outer shape is aligned in a straight line. When the liquid distribution pipe of the book is arranged so as to cross, the structure of the neutralization processing device can be simplified.

  The neutralization treatment apparatus for dialysis equipment washing wastewater of the present invention has a relatively simple structure and can be easily realized even if the washing effluent treatment amount of the dialysis equipment increases, further maintenance is easy, and no neutralizer is required. In addition, it is possible to reduce the amount of exhaustion, and at the same time, it exhibits excellent effects such as low-cost and stable and reliable drainage treatment of dialysis equipment.

  Hereinafter, the neutralization treatment apparatus (hereinafter simply referred to as “neutralization treatment apparatus”) of dialysis equipment washing wastewater according to the present invention will be described in detail. FIGS. 1 to 6 are one embodiment of the neutralization treatment apparatus of the present invention. 1 is a schematic front cross-sectional view of a neutralization treatment apparatus connected to a main pipe for washing and draining dialysis equipment, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a view taken along line II in FIG. (B) is a cross-sectional view of the liquid distributor, (c) is an enlarged view around the upper lid of the tower body, Fig. 4 is a plan view of the neutralization processing apparatus with the upper lid removed, and Fig. 5 is around the liquid distributor. Fig. 6 is an explanatory view of a neutralization treatment apparatus showing an example of connection between a main pipe for washing and drainage and a miscellaneous drain pipe of a dialysis machine according to another embodiment of Fig. 1 to Fig. 5. The illustration of the dispersion plate is omitted.

The neutralization apparatus includes a tower body 1, a neutralizing agent 2, an on-off valve 3, an upstream branch pipe 4, and a downstream branch pipe 5 (FIG. 1).
The tower main body 1 is a main body portion of an apparatus for filling the tower with a neutralizing agent 2 and neutralizing the washing waste water 6 of the dialysis equipment. The front plate 10a, the back plate 10b, the side plate 10c, and the bottom plate 10d are formed into a bottomed cylindrical body having an upper surface opening, and the outer wall shell of the tower body 1 is formed by opening and closing the upper surface opening with an upper lid 10e. In the present embodiment, as shown in FIGS. 3 and 4, the outer shape of the tower body 1 is formed in a substantially rectangular shape having a narrower width W than the length and width of the front plate 10a. As shown in FIG. 3, the bottom plate 10d narrows in a cone shape toward the center lower portion as shown in FIG. The lower edges of the front panel 10a and the rear panel 10b extend below the center lower part as skirt edges, and the level adjuster LT is attached to their lower end parts, so that the tower body 1 stands on the floor GL.

A draining insulator plate 11 is provided in the lower part of the tower according to the tower body 1, a liquid outflow pipe 12 is provided in a tower bottom 1b below the insulator plate 11, and a dialysis machine is washed in the tower upper part 1c. A liquid distributor 14 for spraying the drainage 6 is provided. In the present embodiment, a partition plate 10f is further erected from the liquid distributor 14 to the insulator plate 11 along the side plate 10c from the liquid distributor 14 to the insulator plate 11 inside the tower near the one side plate 10c. The inner tower is partitioned into a chamber filled with the neutralizing agent 2 and an overflow chamber by the partition plate 10f. The cross section of the chamber filled with the neutralizing agent 2 is ensured to have a sufficient cross-sectional area so that the washing waste water 6 of the dialysis machine can quickly flow down even if a packed bed of the neutralizing agent 2 exists. In the case of the overflow chamber, the neutralizing agent 2 is dissolved in the dialysis machine washing waste water 6 over time and becomes smaller or deposits in the packed bed with insoluble matter, so that the packed bed becomes clogged. To prepare for. Even if the packed bed of the neutralizing agent 2 is clogged, the washing drain 6 is bypassed to the overflow chamber so that it can be dealt with.
Reference numeral 18 denotes a liquid dispersion plate formed of a perforated plate that is laid across the tower slightly below the liquid distributor 14. The liquid dispersion plate 18 is provided only in the chamber filled with the neutralizing agent 2. The liquid dispersion plate 18 is provided as necessary. By providing the liquid dispersion plate 18, the uniform distribution of the water spray 61 further proceeds to the neutralizing agent 2 filled on the insulator plate 11 rather than the water spray of the dialysis equipment washing waste water 6 by the liquid distributor 14 alone. A more reliable neutralization treatment of the equipment cleaning waste water 6 is performed. Reference numeral 19b is a receiving member fixed to the inner wall of the tower upper part 1c, and supports the liquid dispersion plate 18.

  As shown in FIG. 1, a main pipe 9 for washing and draining the dialysis machine is arranged in the vertical direction near the tower body 1, and the opening / closing valve 3 is provided at a point near the tower upper part 1 c side. Then, the upstream branch pipe 4 branches from the main pipe 9 located upstream of the on-off valve 3 provided in the middle of the washing / drain main pipe 9 of the dialysis machine and is connected to the liquid distributor 14. Further, the downstream branch pipe 5 branches from the main pipe 9 located on the downstream side of the on-off valve 3 and is connected to the liquid outflow pipe 12. The upstream side branch pipe 4 is disposed substantially horizontally from the main pipe 9 to the liquid distributor 14 at substantially the same level height, but in order to facilitate the flow of the dialysis device washing waste water 6 from the main pipe 9 to the liquid distributor 14. It is more preferable to arrange with a downward slope. The downstream branch pipe 5 is disposed substantially horizontally from the main pipe 9 to the liquid outflow pipe 12 at substantially the same level height, but in order to facilitate the flow of the dialysis device washing waste water 6 from the main pipe 9 to the liquid outflow pipe 12. It is more preferable to arrange with an upward slope. That is, the downstream branch pipe 5 is inclined downward from the liquid outflow pipe 12 and connected to the main pipe 9 on the downstream side of the on-off valve 3, so that the dialysis machine washing waste water 6 smoothly flows down due to a gravity drop. The upstream branch pipe 4 and the downstream branch pipe 5 are T-shaped joints that branch from the main pipe 9 and are once raised as shown in FIG. This is to prevent the dialysis machine washing waste water 6 from inadvertently flowing toward the neutralization apparatus when the on-off valve 3 is open. Reference numeral 92 denotes an upstream short pipe from the point where the upstream branch pipe 4 branches to the on-off valve 3 on the main line. Since the short pipe becomes a place where the dialysis machine washing waste water 6 is accumulated when the on-off valve 3 is closed, it is preferable to shorten the short pipe. Reference numeral 93 denotes a downstream short pipe from the on-off valve 3 to a point where the downstream branch pipe 5 joins the main pipe 9 on the main line.

  The insulator plate 11 is a flat plate or grid having water permeability that can be drained in the form of a perforated plate, mesh, or lattice. Here, it is assumed that the metal wire mesh is a flat insulator plate 11. A receiving member 19b made of a metal square is fixed to the inner peripheral wall of the tower lower part 1a at a predetermined height from the tower bottom 1b, and the insulator plate 11 is placed horizontally so as to be supported by the receiving member. The size of the screen of the insulator plate 11 is set so that the neutralizing agent 2 as a solid granular material can be placed.

  The liquid outflow pipe 12 is a nozzle that protrudes outward from the tower bottom 1b so as to be electrically connected to the inside of the tower, and is fixed to the tower main body 1 side plate 10c at the lower level in the center formed by the bottom plate 10d. . The liquid outflow pipe 12 has substantially the same diameter as the main pipe 9 of the dialysis machine washing drainage 6. Reference numeral 12 a denotes a flange provided at the tip of the liquid outflow pipe 12. The liquid outflow pipe 12 is connected to the downstream branch pipe 5 and connected to the main pipe 9 by flange connection. Reference numeral 13 denotes a lower nozzle provided on the tower body side plate 10c facing the liquid outflow pipe 12, reference numeral 13a denotes a flange provided at the tip of the lower nozzle 13, and reference numeral 13b denotes a blind flange. The liquid outflow pipe 12 and the lower nozzle 13 are in a straight line, and the blind flange 13b is removed to facilitate maintenance such as periodic inspection and cleaning.

  The liquid distributor 14 is a liquid distributor for the dialysis equipment washing waste water 6 provided in the upper part 1c of the tower, and more specifically, on the packed bed of the neutralizing agent 2 filled on the insulator plate 11 in the tower body 1 from above. This is a liquid distributor capable of dispersing and injecting washing waste water 6 of a dialysis machine. As shown in FIG. 3 (b), the liquid distributor 14 includes a liquid distribution pipe 14a in which a large number of through holes 141 are formed on the lower surface side of the pipe, and has a depth width W of the tower body 1 as shown in FIGS. One liquid distribution pipe 14a is arranged so as to cross a substantially intermediate point in a straight line. The through holes 141 are provided at a predetermined pitch on the lower surface side of the pipe so that the filling layer of the neutralizing agent 2 can be sprinkled substantially evenly. The inner end portion of the introduction nozzle 16 related to the liquid distribution pipe 14a protruding from the side plate 10c of the tower upper part 1c is accommodated in the tower. An upper nozzle 15 protrudes from the side plate 10c of the tower upper portion 1c facing the introduction nozzle 16, and the inner end portion of the upper nozzle 15 is accommodated in the tower. The inner end of the upper nozzle 15 exceeds the partition plate 10f and reaches the chamber filled with the neutralizing agent 2. As shown in FIG. 1, the liquid distribution pipe 14 a is a pipe length slightly smaller than the length between both side plates 10 c and is a pipe with a through hole 141 having a length that fits between the inner end of the introduction nozzle 16 and the inner end of the upper nozzle 15. is there. The inlet nozzle 16, the liquid distribution pipe 14a, and the upper nozzle 15 are connected in a straight line by band-fastening both ends of the liquid distribution pipe 14a. The dialysis machine cleaning wastewater 6 led from the upstream portion 91 of the main pipe 9 of the dialysis equipment cleaning drainage 6 through the upstream branch pipe 4 and the introduction nozzle 16 to the liquid distribution pipe 14a is sprinkled from the through hole 141, It falls like a raindrop (Figure 5). Since the depth width W of the tower body 1 is narrow, the dialysis machine washing waste water 6 can be sprayed almost evenly on the upper surface of the packed bed of the neutralizing agent 2 only by passing one liquid distribution pipe 14a. The dialysis machine washing waste water 6 is sprinkled from the liquid distributor 14 so as to wet the neutralizing agent 2, and the neutralizing treatment is performed by dissolving the neutralizing agent 2. The insulator plate 11 is drained, and the dialysis machine washing waste water 6 that sprinkles and flows down is washed away. Since the neutralizing agent 2 is not unnecessarily immersed in the dialysis machine washing waste water 6 for a long time, there is no possibility that the neutralizing agent 2 is thinned or excessively dissolved. The diameters of the introduction nozzle 16, the liquid distribution pipe 14 a, and the upper nozzle 15 are substantially the same as the diameter of the main pipe 9 of the dialysis device washing drainage 6. As the liquid distribution pipe 14a, pipes having the same pipe diameter and pipe length, and different types having different numbers and sizes of through holes 141, pitch arrangement of the through holes 141, and the like are appropriately prepared. If the bands 17a and 17b are removed (a chain line in FIG. 3), the number of the through holes 141 and the size of the through holes 141 can be easily replaced with the liquid distribution pipes 14a. The liquid distribution pipe 14a may be formed by dividing the pipe in half and providing a large number of through holes 141 in the half-divided bowl-shaped portion.

The neutralizing agent 2 is a solid material that is dissolved in water to form an acidic or alkaline granular material and is filled on the insulator plate 11. As shown in FIG. 1, the granular neutralizer 2 is filled up to the vicinity of the liquid dispersion plate 18. When the dialysis machine washing waste water 6 is acidic, the neutralizing agent 2 is used in the form of a granular material that dissolves in water and exhibits alkalinity. On the other hand, when the dialysis machine washing waste water 6 is alkaline, the neutralizing agent 2 dissolves in water. Thus, granular materials exhibiting acidity are used.
This embodiment is a dialysis machine washing waste water 6 that has been sterilized and washed by acid washing such as acetic acid, and the neutralizing agent 2 is a granular material such as magnesium hydroxide, magnesium oxide, or calcium carbonate that dissolves in water and exhibits an alkali. More preferably, the granular material 2a is composed mainly of magnesium hydroxide or magnesium oxide. Using magnesium hydroxide granules having a particle diameter of 3 mm to 5 mm obtained by seawater method magnesium hydroxide or magnesium oxide fired at a predetermined temperature, specifically, magnesium hydroxide granules made by Ube Materials Co., Ltd. Use. Seawater magnesium hydroxide is produced by adding slaked lime milk to decarbonated seawater, but the magnesium hydroxide becomes colloidal and difficult to settle and wash. Thus, magnesium hydroxide having good sedimentation and filterability can be obtained ”(“ Chemical products of 13398 ”, Chemical Industry Daily, page 165, 1998). During the treatment, no ak or the like is produced, and the particle size is also moderate, which makes it easy to handle.

3, reference numeral 10 e ₁ is a contact member fixed to the inner periphery of the upper lid 10 e, reference numeral 10 e ₂ is a fitting portion related to the upper lid 10 e, and reference numeral g is packing, which are used to open and close the upper lid 10 e to the auxiliary tower upper part 1 c. The lid can be easily and reliably covered.

Next, a method for treating dialysis machine washing wastewater using the neutralization apparatus having the above-described configuration will be described. The insulator plate 11 of the tower body 1 is filled with granular neutralizing agent 2 made of magnesium oxide to a predetermined height, covered with an upper lid 10e, and the on-off valve 3 is opened to stand by. Drainage during artificial dialysis flows down from the main pipe upstream portion 91 to the upstream short tube 92, the on-off valve 3, the downstream short tube 93, and the downstream portion 94 without passing through the tower body 1. Thereafter, the artificial dialysis is finished, and the dialysis machine is cleaned and disinfected. Then, when the dialysis machine washing wastewater 6 inclined to the acidic side is washed by washing the dialysis equipment, the dialysis equipment washing wastewater 6 is changed to the acidic side in the main pipe upstream portion 91 of the dialysis equipment washing wastewater 6 is not illustrated. This is detected by the detector, and this detection signal is transmitted to the on-off valve 3 to close the on-off valve 3. The dialysis equipment washing waste water 6 inclined to the acidic side is blocked by the on-off valve 3 from going to the downstream short pipe 93 and enters the liquid distribution pipe 14 a from the upstream portion 91 through the upstream branch pipe 4 and the introduction nozzle 16. As shown in FIG. 5, the dialysis machine washing waste water 6 is temporarily stored in the liquid distribution pipe 14a as a buffer. The liquid distribution pipe 14 a absorbs the flow fluctuation of the cleaning waste water 6. Reference numeral 62 indicates the liquid level of the accumulated dialysis machine washing waste water 6. On the other hand, since a large number of through holes 141 are formed on the lower surface side of the pipe related to the liquid distribution pipe 14a, the dialysis device washing waste water 6 stored in the liquid distribution pipe 14a is simultaneously sprinkled from the through holes 141 with water spray 61. It hangs down. Since the through holes 141 are provided at a predetermined pitch so that water can be uniformly sprinkled on the packed bed of the neutralizing agent 2, the water spray flows down so as to wet almost the entire area of the neutralizing agent 2. The dialysis machine washing waste water 6 which has been inclined to the acidic side due to dissolution of 2 is neutralized. The neutralized water 7 flows down from the insulator plate 11 and travels from the liquid outflow pipe 12 through the downstream branch pipe 5 to the main pipe downstream portion 94. The cross section of the tower body 1 has a sufficient cross-sectional area so that the washing waste water 6 can flow down quickly, and a space for the tower bottom 1b is provided below the insulator plate 11, and the insulator plate 11 is the water of the dialysis equipment washing waste water 6. Therefore, the neutralizing agent 2 is not immersed in the cleaning waste water 6. There is no unnecessary consumption of the neutralizing agent 2.
After that, when the acid cleaning with acetic acid or the like is finished, it is changed to washing with water. Then, the detector detects that the pH has returned to neutral in the main pipe upstream portion 91 of the dialysis machine washing drainage 6, and the on-off valve 3 is opened in response to the detection signal, so that the neutral washing drainage 6 Flows down from the main pipe upstream portion 91 through the on-off valve 3 to the downstream portion 94. It does not pass through the tower body 1. The neutralization apparatus waits for the next acidic dialysis machine washing waste water 6 to come. When the dialysis device washing waste water 6 inclined to the acidic side is flowed again, the same treatment as described above is performed, and the pH of the dialysis device washing waste water 6 is smoothly neutralized.

FIG. 6 is a diagram showing another embodiment in which the connection between the neutralization treatment device and the dialysis equipment washing / drain main pipe 9 is different. The on-off valve 3 is provided in the middle of the main pipe 9 for washing and draining the dialysis machine, and the upstream branch pipe 4 descends from the main pipe upstream portion 91 upstream of the on-off valve 3 and branches to the liquid distributor 14. Connecting. The downstream-side branch pipe 5 is connected with slopes downward from the liquid outlet pipe 12 to the wastewater pipe M _2. Since the treated water 7 obtained by treating the dialysis device washing waste water 6 flows through the liquid outflow pipe 12 and the downstream branch pipe 5, it can be connected to the general miscellaneous drain pipe M without being connected to the downstream portion 94 of the on-off valve 3.

The neutralization treatment apparatus configured in this manner is provided with a draining insulator plate 11 in the tower lower portion 1a and filled with the granular neutralizing agent 2 on the insulator plate 11, and a liquid distribution pipe 14a is installed in the tower upper portion 1c. Then, the dialysis equipment washing waste water 6 inclined to acidity is led to the liquid distribution pipe 14a, and the neutralization agent 2 is dissolved by spraying water from the through hole 141 of the liquid distribution pipe 14a to the packed bed of the neutralizing agent 2. Since the neutralization treatment is performed, the amount of waste water for washing dialysis equipment increases and the apparatus can be easily accommodated. If the number of beds is large and the treatment amount of the washing waste water 6 of the dialysis machine is increased, the cross-sectional area filled with the neutralizing agent 2 of the tower body 1 is changed to the large tower body 1 and the dialysis machine is almost uniformly in the cross-sectional area. This can be easily handled by providing the liquid distribution pipe 14a so that the cleaning waste water 6 can be sprinkled. Even if there is a fluctuation in the flow rate of the washing waste water 6 of the dialysis machine, it is once stored in the liquid distribution pipe 14a, so that the liquid distribution pipe 14a becomes a buffer and absorbs the fluctuation. Furthermore, even if the flow rate of the dialysis machine washing waste water 6 varies, water is sprinkled on the packed bed through the through holes 141 provided at a predetermined pitch so as to cross the tower body, so there is no risk of drift.
And since the tower main body 1 makes the structure of a packed tower and the sprinkling of the dialysis machine washing | cleaning waste_water | drain 6 which falls from the liquid distribution pipe 14a flows down while wetting the granular neutralizing agent 2, the neutralizing agent 2 is in the middle in the process. Dissolve in the sprinkler as much as necessary for the sum treatment. The insulator plate 11 serves to drain the dialysis equipment washing drainage 6 flowing down the tower lower part 1a. Since the neutralizing agent 2 is not soaked in the liquid for a long time as in a liquid tank or the like, the neutralizing agent 2 is not consumed unnecessarily. The dialysis machine washing waste water 6 can be treated stably and reliably over a long period of time.

  The upstream branch pipe 4 branches from the main pipe upstream portion 91 upstream of the on-off valve 3 in a horizontal or descending manner and branches to connect to the liquid distributor 14, and the downstream branch pipe 5 extends horizontally from the liquid outlet pipe 12. Since it is inclined downward and connected to the main pipe downstream portion 94 downstream of the on-off valve 3, or is connected to the miscellaneous drainage pipe M while being inclined horizontally or downward from the liquid outflow pipe 12, the gravity drop is utilized. The dialysis machine washing waste water 6 can be treated without difficulty. No power is required for the treatment of the dialysis machine washing waste water 6.

In addition, since the neutralizing agent 2 is made of granular material mainly composed of magnesium hydroxide or magnesium oxide, the dialysis device washing waste water 6 is sprinkled down from the liquid distributor 14 so as to wet the neutralizing agent 2. Thus, the neutralizing agent 2 is appropriately dissolved and can be neutralized well. Since the granular material 2a containing magnesium hydroxide or magnesium oxide as a main component is used, the neutralization reaction is faster than that of natural rock particles and the like, and it is sufficient to wet it like a packed column. The amount to be filled in the tower body 1 can be small. When neutralizing agent 2 made of seawater magnesium hydroxide is used, particles can be enlarged to obtain a product with good sedimentation and filterability. With its large size, it is much more excellent in workability and handling.
Furthermore, the tower main body 1 is formed into a substantially rectangular shape having a depth width W narrower than the length and breadth of the front plate 10a, and the intermediate point of the depth width W of the tower main body 1 is aligned in a straight line. Since the distribution pipe 14a is arranged so as to cross, the tower main body 1 and the liquid distribution pipe 14a have a simple structure, and in addition, the dialysis equipment washing waste water 6 can be easily sprinkled into the packed bed of the neutralizing agent 2. . Since the depth width W is narrow, the present neutralization apparatus can be installed in close proximity to the building wall as shown in FIG.

  The present invention is not limited to those shown in the above-described embodiments and examples, and various modifications can be made within the scope of the present invention depending on the purpose and application. The shape, size, material, composition, etc. of the tower body 1, neutralizer 2, upstream branch pipe 4, downstream branch pipe 5, main pipe 9 of dialysis equipment washing drainage 6, miscellaneous water pipe M, etc. In addition, they can be appropriately selected within the scope of the present invention.

1 is a schematic front cross-sectional view of a neutralization apparatus connected to a main pipe for washing and draining dialysis equipment in one embodiment of the dialysis equipment washing and drainage neutralization apparatus of the present invention. It is a side view of FIG. (A) is a cross-sectional view taken along the line II of FIG. 1, (b) is a cross-sectional view of the liquid distributor, and (c) is an enlarged view around the top cover of the tower body. It is a top view of the neutralization processing apparatus of the state which removed the cover. It is an enlarged view around a liquid distributor. It is explanatory drawing of the neutralization processing apparatus which shows the example of a connection with the dialysis equipment washing | cleaning drainage main pipe and miscellaneous drainage pipe of another aspect.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tower main body 1a Tower lower part 1b Tower bottom part 1c Tower upper part 10a Front board 11 Insulator board 12 Liquid outflow device 14 Liquid distributor 14a Liquid distributor 141 Through-hole 2 Neutralizing agent 2a Granular substance which has magnesium hydroxide or magnesium oxide as a main component 3 Open / close valve 4 Branch pipe upstream 6 Washing drainage for dialysis equipment (washing drainage)
5 Downstream branch pipe 9 Main pipe for washing and draining dialysis equipment W Depth width

Claims (4)

A tower main body (1) provided with a draining insulator plate at the lower part of the tower, a liquid outflow pipe at the bottom of the tower below the insulator board, and a liquid distributor for sprinkling washing waste water from the dialysis equipment at the upper part of the tower When,
A solid neutralizing agent (2) which is dissolved in water and exhibits acidity or alkalinity, and is filled on the insulator plate, from the liquid distributor so as to wet the neutralizing agent. A neutralization treatment apparatus for dialysis equipment washing waste water, wherein the washing waste water from the dialysis equipment is sprinkled down and neutralized by dissolving the neutralizing agent. A tower main body (1) provided with a draining insulator plate at the lower part of the tower, a liquid outflow pipe at the bottom of the tower below the insulator board, and a liquid distributor for sprinkling washing waste water from the dialysis equipment at the upper part of the tower When,
A solid neutralizing agent (2) which is dissolved in water to form an alkaline substance and filled on the insulator plate;
An on-off valve (3) provided in the middle of the main pipe for washing and draining dialysis equipment,
An upstream branch pipe (4) branched from the main pipe upstream of the on-off valve substantially horizontally or downwardly inclined and led to the liquid distributor;
A downstream branch pipe (5) connected to the main pipe downstream from the on-off valve with a horizontal or downward inclination from the liquid outflow pipe, or a miscellaneous drain pipe with a substantially horizontal or downward inclination from the liquid outflow pipe. A downstream branch pipe (5) connected to the basin, and the washing effluent of the dialysis machine is sprinkled down from the liquid distributor so as to wet the neutralizer, and the neutralizer is dissolved by A neutralization treatment device for washing waste water from dialysis equipment, characterized by performing sum treatment. The dialysis machine according to claim 2, wherein the neutralizing agent is made of a granular material mainly composed of magnesium hydroxide or magnesium oxide, and the liquid distributor is made of a liquid pipe having a large number of through holes formed on the lower surface side of the pipe. Cleaning wastewater neutralization treatment equipment. The outer shape of the tower main body is formed in a substantially rectangular shape having a depth width smaller than the length and width of the front plate, and the liquid pipe is arranged in a straight line at a substantially middle point of the depth width of the outer shape of the tower main body. The neutralization processing apparatus of the dialysis equipment washing waste_water | drain of Claim 3 arrange | positioned so that may cross | intersect.

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