JP5043893B2 - Wastewater filtration equipment - Google Patents

Description

  The present invention relates to a wastewater filtration apparatus used for treating water used for cleaning a tool used for applying a water-soluble paint.

  Conventionally, wastewater containing water-soluble paint is incinerated as industrial waste, or the paint components contained in the paint wastewater are coagulated and precipitated using a flocculant and filtered to remove the paint components. Processing is performed.

  In addition, as a conventional technology for paint wastewater treatment using a flocculant, a first step P1 in which a bentonite suspension is added to paint wastewater to adsorb the paint components contained in the paint wastewater to bentonite, A second step P2 in which a flocculant composed of at least one of polyaluminum chloride solutions is added to the paint wastewater to agglomerate the paint particles, and a chemical agent consisting of either acid or alkali is added to the paint wastewater. A treatment method has been proposed which includes a third step P3 for adjusting the pH to a predetermined range and a fourth step P4 for filtering the whole pH-adjusted paint wastewater to separate it into a filtrate and a dehydrated cake (Patent Literature). 1).

  Moreover, after adding and stirring an electrolyte solution to the waste water which wash | cleaned the coating tool using a water-based acrylic paint, an acrylic resin slurry is precipitated and isolate | separated. Moreover, the processing method of reusing the supernatant water from which the acrylic resin slurry was separated for cleaning the coating tool has been proposed (Patent Document 2).

JP 2009-45568 A JP 2001-300548 A

  However, conventionally, a wastewater treatment apparatus used to perform paint wastewater treatment using a flocculant is a relatively large apparatus and is not easily portable. For this reason, even in small-scale painting work, wastewater containing water-soluble paint is stored in tanks and transported to treatment facilities. In addition, there is a problem that up to the conveyance cost.

  An object of the present invention is to provide a wastewater filtration apparatus that solves such problems and can be brought into a work site and realizes wastewater treatment at the work site.

  In order to achieve the above object, the present invention has the following configuration.

(1) A drainage containing water-soluble paint is mixed with a flocculant to agglomerate the water-soluble paint and then the drainage is thrown into the sink and a drainage port formed on the bottom surface of the sink. A filtering means for separating the agglomerated water-soluble paint from the wastewater introduced through the drain outlet and discharging the moisture to the outside, and the sink is positioned above the filtering means. And a primary filtering means that is set in the sink and filters the wastewater that has been put into the sink and then sends it to the drain outlet, the filtering means being agglomerated from the wastewater. Filter medium, a container part in which the filter medium is housed, and a lid part that closes the opening of the container part, the lid part being connected to the sink and introducing drainage, Filter with the filter medium A discharge part for discharging the waste water, the container part is detachable with respect to the lid part, and the primary filtration means includes a basket-type accommodation part in which many fine holes are formed, A drainage filtration characterized in that a bottom part of the basket type accommodation part is supported at a position higher than the bottom face of the sink by a support part provided in the basket type accommodation part, and the filtration performance is lower than the filtration means. apparatus.

According to (1), since the drainage filtration device can be assembled by placing the sink on the support means and attaching the filtration means, the tool used to bring the drainage filtration device to the work site and apply the water-soluble paint It becomes possible to treat the waste water that has been washed at the work site. Furthermore, since the relatively large and agglomerated water-soluble paint contained in the wastewater can be removed by the primary filtration means, the drainage port is prevented from being clogged and the filter medium of the filtration means for performing the secondary filtration at a time. Since it is possible to prevent a large amount of water-soluble paint from adhering, it is possible to extend the life of the filtration means and shorten the filtration time. Further, by removing the container portion, it becomes possible to set and remove the filter medium inside the container. For this reason, it is usually possible to use only the container on the lid, use the drainage filtration device as an outdoor sink, and set the filter medium when processing wastewater containing water-soluble paint. Thus, it is possible to broaden the application of the drainage filtration device.

(2) In (1), the support means is configured to be freely disassembled and assembled.
According to (2), since the support means is a structure that can be disassembled and assembled, when the drainage filtration device is not used, the support means should be disassembled and put into a compact state to operate the drainage filtration device. When brought to the site, the support means can be brought in a disassembled state, and it is easy to carry to the work place.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to carry out the waste_water | drain which brought the waste-water-filtering apparatus into the work site, and wash | cleaned the tool used for application | coating of a water-soluble paint in a work site.

It is a perspective view showing the appearance of drainage filtration device 1 in one embodiment of the present invention. It is a perspective view of the back side of FIG. FIG. 6 is an explanatory diagram showing a connection structure between a sink 10 and a cartridge 14. 3 is a perspective view showing an appearance of a cartridge 14. FIG. 3 is an exploded perspective view showing a structure of a cartridge 14. FIG. 2 is a perspective view showing an external appearance of a filtration basket 20. FIG. 2 is a perspective view showing a state in which a filtration basket 20 is installed in a sink 10. FIG. FIG. 2 is a perspective view showing an appearance of a state in which a filter material 22 is laid on the filtration basket 20. It is a figure which shows the state of the waste_water | drain before mixing a flocculant. It is a figure which shows the state of the waste_water | drain after mixing a flocculant. It is a figure which shows operation | movement when throwing in waste_water | drain to the sink. It is a figure which shows a state when draining into the sink. It is a figure which shows the result of the filtration process experiment in the waste water filtration apparatus. It is a figure which shows the construction drainage standard of Tokyo and Nagoya City.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing an external appearance of a wastewater filtration device 1 according to an embodiment of the present invention. FIG. 2 is a perspective view of the back side of FIG. FIG. 3 is an explanatory diagram showing a connection structure between the sink 10 and the cartridge 14. As shown in FIGS. 1 and 2, the drainage filtration apparatus 1 includes a sink 10, a support 12 on which the sink 10 is placed, a cartridge 14 having a filtration function, and a filtration basket 20 placed in the sink 10. Is provided. In addition, a water supply unit 50 is attached to the drainage filtration device 1 as necessary.

  The water supply unit 50 includes a water pipe (not shown) extending in the vertical direction, a faucet 51 connected to one end of the water pipe, and a covering member 52 that is protected by the water pipe. Water is poured into the sink 10 via the faucet 51 by connecting the other end of the water pipe and the faucet of the outdoor water supply unit connected to the pump for pumping up the water network or well water, for example, with a rubber hose. Is possible. In addition, when installing the drainage filter apparatus 1 in the vicinity of the water supply unit already installed outdoors, the water supply unit 50 does not need to be attached to the drainage filter apparatus 1.

  The sink 10 is a substantially rectangular parallelepiped container body, and a drain port 10a is formed on the bottom surface. Moreover, the recessed part 10b extended in an up-down direction is formed in the center part of one side surface. The water supply unit 50 fits into the recess 10b. As a result, the faucet 51 is arranged at a position close to the central portion of the sink 10. In addition, one end of a connection pipe 10c is connected to the lower surface of the sink 10 so as to communicate with the drain port 10a. Further, as shown in FIG. 3, the other end of the connection pipe 10 c is connected to the cartridge 14.

  The support base 12 is a structure that can be disassembled and assembled, and is designed such that the sink 10 is disposed at a position higher than the cartridge 14. The cartridge 14 is disposed inside the support base 12 below the sink 10.

  FIG. 4 is a perspective view showing the appearance of the cartridge 14. FIG. 5 is an exploded perspective view showing the structure of the cartridge 14. The cartridge 14 includes a case body 14a, a lid body 14b that closes the opening of the case body 14a, and a filter medium 14c for filtration housed inside the case body 14a. The case body 14a is made of a cylindrical body with a bottom, and a spiral uneven portion is formed on the outer peripheral surface of the opening.

  The lid 14b is a bottomed cylindrical body, and the inner diameter of the opening of the lid 14b is set to be approximately equal to or slightly larger than the outer diameter of the opening of the case body 14a. In addition, a spiral uneven portion is formed on the inner peripheral surface of the opening. Furthermore, the upper part of the lid body 14b is connected to the connection pipe 10c and introduces an inlet 14d for introducing water from the sink 10 into the case body 14a, and discharges the water that has passed through the filter medium 14c in the case body 14a. A discharge portion 14e is formed.

  The filter medium 14c accommodated inside the case body 14a is formed into a cylindrical shape by sheet-folding a fine nonwoven fabric in a sheet shape so that peaks and valleys are alternately folded and both ends are matched. Then, the filter medium 14c is accommodated in the case body 14a, the lid body 14b is fitted to the opening of the case body 14a, and either the case body 14a or the lid body 14b is rotated to screw the lid body 14b to the case body 14a. Combine. Thereby, the cover body 14b is fixed to the case body 14a, and the cartridge 14 is assembled.

  When water is poured into the sink 10 to which the cartridge 14 is attached, the water in the sink 10 is sent to the cartridge 14 from the drain port 10a through the connection pipe 10c and the introduction part 14d by gravity. And the water filtered by the cartridge 14 is discharged | emitted outside the cartridge 14 through the discharge part 14e.

  FIG. 6 is a perspective view showing the appearance of the filtration basket 20. FIG. 7 is a perspective view showing a state in which the filtration basket 20 is installed in the sink 10. As shown in FIG. 6, the filtration basket 20 is formed so that the bottom surface is rectangular and the side surface is a slope, and is provided at the four corners of the storage portion 20a, with the storage portion 20a having a large number of fine holes formed on the bottom surface and the side surface. In other words, it is composed of a rod-shaped support 20 b that supports the accommodating portion 20 a at a position higher than the bottom surface of the sink 10. The vertical and horizontal sizes when the storage portion 20 a of the filtration basket 20 is viewed in plan are set slightly smaller than the vertical and horizontal sizes inside the sink 10. Further, the thickness of the accommodating portion 20a is set to be smaller than the height inside the sink 10. For this reason, when the filtration basket 20 is arranged, as shown in FIG. 7, the storage portion 20 a is stored in the sink 10, and the bottom surface of the storage portion 20 a is positioned higher than the bottom surface of the sink 10. As shown in FIG. 8, a filter material 22 that is finer than the hole of the filtration basket 20 may be laid on the filtration basket 20. The filter medium 14c in the cartridge 14 is a finer member than the filtration basket 20 and the filter medium 22, and has the ability to remove the aggregated water-soluble paint in the order of the filtration basket 20, the filter medium 22, and the filter medium 14c. Get higher.

Next, the usage method of the waste-water filtration apparatus 1 is demonstrated.
First, the drainage filtration device 1 is assembled. After assembling the support base 12, the sink 10 is installed on the support base 12, the water supply unit 50 is attached, and the connection pipe 10 c and the cartridge 14 are connected to the sink 10. Furthermore, the filtration basket 20 is set in the sink 10 as needed. Furthermore, the water supply unit 50 and the water supply unit installed outdoors are connected by a rubber hose. If necessary, a rubber hose may be connected to the discharge part 14e of the cartridge 14 so that the waste water flowing out of the cartridge 14 is sent to the sewage.

  Before using the wastewater filtration device 1, wastewater containing a water-soluble paint is collected in a container such as a bucket, and a flocculant is added to the wastewater in the bucket and stirred several times. As a result, the water-soluble paint contained in the waste water is agglomerated in the waste water colored in the paint color shown in FIG. 9, and after several tens of minutes, the agglomerated paint in the bucket as shown in FIG. And transparent moisture.

  Then, as shown in FIG. 11, the waste water separated into the paint and moisture in the bucket is put into the sink 10 of the drainage filtration device 1. After the addition, as shown in FIG. 12, the tap 51 is operated to cause the tap water to flow out, and the paint adhering to the periphery of the sink 10 is washed away, and the paint adhering to the bucket is washed away to the sink 10. Thereafter, the paint is allowed to stand as it is, so that the relatively large agglomerated paint is removed from the wastewater by natural flowing water and firstly by the primary filtration by the filtration basket 20. The waste water that has passed through the filtration basket 20 is sent to the cartridge 14, and fine paint remaining in the waste water is removed by secondary filtration by the cartridge 14. And the waste_water | drain which passed the cartridge 14 is poured into sewage through the discharge part 14e.

Next, the result of the filtration treatment experiment in the wastewater filtration device 1 will be described.
The waste water used in the experiment was mixed with the water-soluble paint “Belle Art (registered trademark)” manufactured by SK Kaken Co., Ltd. and the aggregate “Siposand (registered trademark)” manufactured by SK Kaken Co., Ltd. In order to conduct experiments under more severe conditions, it was decided to use the one close to the stock solution for the experiment.
Further, “Mizumu (registered trademark)” manufactured by Act Corporation was used as the flocculant.
The cartridge 14 used was Big Blue housings Model # 10-1 "manufactured by USFilter Plymouth Products.
Further, in this experiment, drainage was directly put into the sink 10 without setting the filtration basket 20.
Under such conditions, the filtered water from the drainage filtration apparatus 1 was extracted, and it was examined whether or not the construction work drainage standard was satisfied. As a result, the measurement result shown in FIG. 13 was obtained. For comparison, FIG. 13 shows the measurement results for the wastewater to be input to the wastewater filtration device 1. FIG. 14 shows construction drainage standards for Tokyo and Nagoya.

  Comparing the wastewater before being put into the wastewater filtration device 1 and the wastewater filtered by the wastewater filtration device 1, by filtering with the wastewater filtration device 1, as shown in FIG. The content of hexane extractant (mineral oils), pH value, content of suspended matter, oxygen consumption by potassium permanganate at 100 ° C., and biochemical oxygen consumption all decreased. In addition, comparing the value of the wastewater filtered by the wastewater filtration device 1 with the construction construction wastewater standards in Tokyo and Nagoya, the wastewater filtered by the wastewater filtration device 1 It can be seen that the construction work drainage standard is satisfied. For this reason, in the local government of construction drainage standards equivalent to Tokyo and Nagoya City, it becomes possible to drain the wastewater filtered by the wastewater filtration device 1 into the sewage.

  According to the present embodiment configured as described above, the drainage filtration device 1 can be assembled by assembling the support base 12, placing the sink 10 on the support base 12, and attaching the cartridge 14. For this reason, it becomes possible to bring the waste water filtration device 1 into the work site and to treat the waste water washed with the tool used for applying the water-soluble paint at the work site. As a result, even if a small amount of drainage is used, it is possible to save the trouble of transporting it to a treatment facility and processing it, so that it is possible to reduce transport costs and labor costs.

  In addition, the filtration basket 20 can remove the relatively large agglomerated water-soluble paint contained in the wastewater before the drainage flows into the drainage port 10a, thereby preventing the drainage port 10a from being clogged and the cartridge 14. Since it is possible to prevent a large amount of water-soluble paint from adhering to the inner filter medium at a time, it is possible to extend the life of the cartridge 14 and shorten the filtration time.

  Further, the lid body 14b of the cartridge 14 is attached to the connecting pipe 10c, and only the case body 14a is removed, so that the filter medium 14c inside the case body 14a can be replaced, and further, the filter medium 14c can be set or removed. Become. For this reason, when a filtration function falls, such as when filtration time becomes long, it becomes possible to replace | exchange a filter medium easily only by removing not only the cartridge 14 but the case body 14a. Furthermore, usually, only the case body 14a is installed on the lid body 14b, the drainage filtering device 1 is used as an outdoor sink, and a filter medium is set when processing wastewater containing water-soluble paint. A method becomes possible, and it becomes possible to expand the use of the drainage filtration apparatus 1.

  As mentioned above, although embodiment of this invention was described, embodiment of this invention is not restricted to what was mentioned above. For example, in the above-described embodiment, the primary filtration is performed by the filtration basket 20 and the secondary filtration is performed in the cartridge 14. However, the tertiary and further the quaternary filtration may be performed in the subsequent stage of the cartridge 14. . In the above-described embodiment, the drain port 10a and the cartridge 14 are connected via the connecting pipe 10c. However, the present invention is not limited to this, and the cartridge 14 is directly attached to the sink 10 immediately below the drain port 10a. Also good. In the above-described embodiment, the sink 10 and the support base 12 are configured as separate members. However, the present invention is not limited thereto, and the sink 10 and the support base 12 may be integrated.

DESCRIPTION OF SYMBOLS 1 Filtration apparatus 10 Sink 10a Drain outlet 10b Recessed part 10c Connection pipe 12 Support stand 14 Cartridge 14a Case body 14b Cover body 14c Filter medium 14d Introduction part 14e Discharge part 20 Filtration basket 20a Accommodating part 20b Support body 22 Filter material 50 Outdoor water supply unit 51 Faucet 52 Coating member

Claims (2)

A sink into which the wastewater containing water-soluble paint is mixed with a flocculant to agglomerate the water-soluble paint and then the wastewater is charged;
A filtering means that is detachably connected to a drain port formed on the bottom surface of the sink, and separates the agglomerated water-soluble paint from the waste water introduced through the drain port and discharges moisture to the outside. When,
Supporting means for supporting the sink so as to be positioned above the filtering means;
A primary filtration means set in the sink and filtered to drain the wastewater charged into the sink and then sent to the drainage port;
The filtration means includes a filter medium that removes the water-soluble paint aggregated from waste water, a container part in which the filter medium is stored, and a lid part that closes the opening of the container part.
The lid portion includes an introduction portion that is connected to the sink and introduces waste water, and a discharge portion that discharges waste water filtered by the filter medium,
The container part is detachable from the lid part,
The primary filtration means includes a basket-type storage portion in which a large number of fine holes are formed, and the bottom surface of the basket-type storage portion is lower than the bottom surface of the sink by a support portion provided in the basket-type storage portion. A drainage filtration apparatus , which is supported at a high position and has a filtration performance lower than that of the filtration means . 2. The drainage filtering apparatus according to claim 1 , wherein the support means is configured to be disassembled and assembled.

Images