JP4960784B2 - ceramic - Google Patents

Description

  The present invention relates to a ceramic having a surface active function that makes contact with oils and fats and waste water flowing in a pipe to make these oils and wastes into an emulsified aqueous solution.

Conventionally, for example, a reaction tank into which wastewater containing urine from livestock barns such as cattle is introduced, and the wastewater that has flowed into the reaction tank is heated to 35 ° C. to 65 ° C. and fermented by microorganisms contained in the waste water. There is known a waste water treatment apparatus comprising a heating means for decomposing organic matter and an adsorption tank in which an adsorbent such as activated carbon is arranged and adsorbs and removes organic matter in waste water flowing from the reaction tank (for example, , See Patent Document 1).
JP-A-6-15296

  However, in the wastewater treatment apparatus as described above, for example, the purification treatment of wastewater containing milk fat or the like discharged from a milking parlor or the like in a ranch or the like may be insufficient. Therefore, for example, the floating milk fat (floating oil and fat) floating on the water surface of the wastewater in the storage tank is sucked from the suction port together with the drainage and brought into contact with the ceramic having a surface active function to make an emulsified aqueous solution. It is conceivable to use a submersible pump means that discharges from the outlet, and a ceramic having a surface active function includes a tetrapot type.

  However, when a plurality of, for example, six tetrapot-type ceramics are housed in a cylindrical part formed in the middle of a pipe and used, the ceramics collide and break, and impurities that cannot be purified are entangled with the ceramics. There is a risk of clogging.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a ceramic having a surface active function that has good durability and does not cause clogging of impurities.

  The ceramic according to claim 1 is a ceramic having a surface-active function that makes contact with oils and fats and drainage flowing in the piping to make these oils and wastewater an emulsified aqueous solution, and an inflow opening through which the oils and fats and wastewater flow. Is provided at the one end surface in the axial direction, and has an outflow opening through which the emulsified aqueous solution flows out at the other end surface in the axial direction. And a plurality of protrusions protruding inward from the inner peripheral surface of the cylindrical main body.

  The ceramic according to claim 2 is the ceramic according to claim 1, wherein the plurality of protrusions are spirally arranged so that the emulsified aqueous solution flows as a swirling flow from the outflow opening.

  According to the present invention, the durability is good, it can be used for a long period of time, and there is no occurrence of clogging of impurities in the cylindrical main body, and only the projections that are consumed and reduced are used. Since it can be replaced with a new one, it is not necessary to replace the entire ceramic, and the running cost can be reduced.

  An embodiment of the present invention will be described with reference to the drawings.

  In FIG. 1, 1 is a waste water treatment apparatus, and this waste water treatment apparatus 1 is an apparatus for purifying waste water containing milk fat (oil and fat) and cow manure discharged from, for example, a milking facility.

  The waste water treatment apparatus 1 includes a tank body 4 that temporarily stores waste water that flows in from the inflow pipe 2 and causes the waste water after purification treatment to flow out from the outflow pipe 3 as treated water.

  The tank body 4 includes, for example, three tanks formed by partitioning with two partition plates 5 and 6, that is, a first processing tank 11 and a second processing tank 12 that are storage tanks in order from upstream to downstream. And a third treatment tank 13. The first treatment tank 11 and the second treatment tank 12 are communicated with each other through the upper communication part 14, and the second treatment tank 12 and the third treatment tank 13 are communicated with each other through the lower communication part 15.

  In the first treatment tank 11, a submersible pump 21, which is one pumping means, is disposed in the waste water in the first treatment tank 11.

  The submersible pump 21 sucks the floating milk fat, which is a floating oil and fat floating on the water surface of the wastewater in the first treatment tank 11 together with the drainage, when the submersible pump 21 is operated. Tube 23 is connected. The suction port portion 22 of the first suction pipe 23 opens upward near the water surface of the waste water in the first treatment tank 11. Further, the submersible pump 21 has a second suction pipe 25 that sucks the precipitated milk fat, which is the precipitated fat and oil that has sunk at the bottom of the first treatment tank 11, together with the drainage, when the submersible pump 21 is operated. It is connected. The suction port 24 of the second suction pipe 25 opens downward near the bottom of the first treatment tank 11. Further, a downstream end portion of an air supply pipe 26 that supplies air to the waste water flowing through the second suction pipe 25 is connected to the middle of the second suction pipe 25, and the upstream end portion of the air supply pipe 26 is 1 It is opened at a position on the surface of the waste water in the treatment tank 11. In the middle of the air supply pipe 26, a flow rate adjusting valve 27 for adjusting the amount of air flowing through the air supply pipe 26 is provided.

  The submersible pump 21 is provided with a flow path switching means (not shown), and the flow path switching means is controlled by a control means (not shown) having a timer function. Then, by the control by the control means, the floating oil suction state in which the floating milk fat and drainage are sucked from the first suction pipe 23 and the precipitated milk fat content from the second suction pipe 25 based on a preset set time. Further, switching to the precipitated oil suction state where the waste water is sucked is performed.

  Further, the submersible pump 21 is a pipe that discharges an emulsified aqueous solution (emulsion) containing emulsified oil and fat from the discharge port portion 28 into the first treatment tank 11 toward the water surface of the drainage when the submersible pump 21 is operated. The discharge pipe 29 is connected. The discharge port portion 28 of the discharge pipe 29 is opened obliquely downward at a position on the water surface of the wastewater in the first treatment tank 11.

  Then, floating milk fat and waste water sucked in the first suction pipe 23 in the middle of the discharge pipe 29, that is, for example, in the removable housing portion 30 formed in the portion of the discharge pipe 29 on the submersible pump 21 side. Emulsifying means for making the precipitating milk fat sucked in the second suction pipe 25 and the waste water into the emulsified aqueous solution, that is, for example, a substantially cylindrical ceramic 31 having a surface active function is accommodated in a removable manner. Yes.

  The ceramic 31 is made of, for example, ore and activated coal. When the flow path switching means is in the floating oil suction state, the ceramic 31 is sucked by the first suction pipe 23 and flows through the discharge pipe 29. The floated milk fat and waste water are made into an emulsified aqueous solution in contact with the waste water, and when the flow path switching means sucks the precipitated oil, it comes into contact with the precipitated milk fat and waste water sucked in the second suction pipe 25 and flowing through the discharge pipe 29. Then, these precipitated milk fat and waste water are made into an emulsified aqueous solution. Then, due to the contact with the ceramic 31, the emulsified aqueous solution generated based on the catalytic action, physical phenomenon, surface active function, etc. flows in the common discharge pipe 29 with respect to the two suction pipes 23 and 25. It is discharged from the discharge port portion 28.

  The discharge pipe 29 is connected to the downstream end of an air supply pipe 26a for supplying air to the emulsified aqueous solution flowing through the discharge pipe 29. The upstream end of the air supply pipe 26a is connected to the first treatment tank 11. Open at a position on the surface of the drainage. The air supply pipe 26a is connected to, for example, two places of the pipe portion 29a of the discharge pipe 29 and the accommodating portion 30 via an orifice or the like. Note that the air supply pipe 26a may be connected to only one of the pipe part 29a and the accommodating part 30 of the discharge pipe 29.

  Here, the cylindrical accommodating portion 30 that accommodates the ceramic 31 so as to be able to be taken in and out is detachable from the middle portion of the discharge pipe 29, and as shown in FIGS. It is comprised by the member, ie, the 1st member 30a, the 2nd member 30b, and the 3rd member 30c.

  The first member 30a and the third member 30c have the same shape, a cylindrical tubular portion 32, a frustoconical portion 33 provided at an end of the tubular portion 32, and the frustoconical portion 33. And a cylindrical mounting portion 34 provided at the enlarged diameter end portion. The mounting portion 34 of the first member 30a is screwed to the outer peripheral side of one end of the cylindrical second member 30b, and the mounting portion 34 of the third member 30c is screwed to the outer peripheral side of the other end of the second member 30b. Yes. That is, the first member 30a is detachably attached to one end of the second member 30b, and the third member 30c is detachably attached to the other end of the second member 30b.

  Further, as shown in FIGS. 3 to 6, the ceramic 31 includes a cylindrical main body 35 that has a cylindrical shape with both ends open, and an inner peripheral surface of the cylindrical main body 35 that is replaceably provided on the cylindrical main body 35. And a plurality of projections 36 projecting inward from.

  An inflow opening 37 through which milk fat and drainage that have flowed from the submersible pump 21 side flows is formed in one end surface in the axial direction of the cylindrical main body 35. An outflow opening 38 through which the emulsified aqueous solution flows out is formed in the other axial end surface of the cylindrical main body 35. Further, the cylindrical main body 35 is formed with a plurality of mounting holes 39 located in a spiral shape so as to penetrate the inner and outer peripheral surfaces of the cylindrical main body 35. Each mounting hole 39 is configured by a small diameter hole 39a on the inner peripheral surface side and a large diameter hole 39b on the outer peripheral surface side. The cylindrical main body 35 is fitted and accommodated in the inner peripheral side of the second member 30b of the accommodating portion 30 of the discharge pipe 29 so as to be put in and out. After removing the first member 30a or the third member 30c from the second member 30b, the cylindrical main body 35 can be taken out from the second member 30b together with the protrusions 36.

  The plurality of protrusions 36 are arranged in a spiral shape so that the emulsified aqueous solution flows as a swirling flow from the outflow opening 38. That is, each protrusion 36 is attached to the attachment hole 39 of the cylindrical main body 35 so as to be detachable individually so as to draw a spiral. Each protrusion 36 is, for example, a disc portion 36a that is detachably fitted into a large-diameter hole 39b of the attachment hole portion 39, and a small-diameter hole of the attachment hole portion 39 that is integrally provided at the center portion of the disc portion 36a. The shaft portion 36b protrudes inward from the inner peripheral surface of the cylindrical main body 35 through 39a, and a spherical portion 36c integrally provided at the tip of the shaft portion 36b. Then, when replacing the worn and reduced protrusion 36 with a new one, remove the old protrusion 36 with a tool or the like from the inside of the cylindrical main body 35 taken out from the housing 30 and remove it. Then, a new protrusion 36 is inserted into the attachment hole 39 from the outside of the cylindrical main body 35 and attached.

  In FIG. 4, only a part of the plurality of protrusions 36 located in a spiral shape is described, and the description of the remaining protrusions 36 is omitted.

  On the other hand, aeration means 41 for supplying air to the waste water in the first treatment tank 11 is disposed in the first treatment tank 11. The aeration means 41 is constituted by, for example, an air diffusion pipe 43 that is horizontally disposed in the lower part of the first treatment tank 11 and has a large number of holes 42 formed therein. A pipe (not shown) is connected to the air diffusion pipe 43. An air pump 44 is connected via A flow rate adjusting valve (not shown) for adjusting the amount of air flowing through the pipe is provided in the middle of the pipe.

  Further, in the first treatment tank 11, porous activated coal 46 that serves as a source of aerobic microorganisms for purifying the wastewater in the first treatment tank 11 is contained in the wastewater in the first treatment tank 11. It arrange | positions so that it may be located above the diffuser tube 43. The activated coal 46 is, for example, formed by treating coal with dilute hydrochloric acid to form fine pores, and aerobic microorganisms are fixed in the fine pores, and the wastewater in an emulsified aqueous state by the fixed aerobic microorganisms or the like. The emulsified milk fat and the like are decomposed.

  The second treatment tank 12 receives and stores the waste water from the first treatment tank 11, and the waste water stored in the second treatment tank 12 is purified by aerobic microorganisms. In the second treatment tank 12, as with the first treatment tank 11, aeration means 51 for supplying air to the waste water in the second treatment tank 12 is disposed. The aeration means 51 is constituted by an air diffusion pipe 53 that is horizontally disposed in the lower part of the second processing tank 12 and has a large number of holes 52 formed therein. A pump 44 is connected. A flow rate adjusting valve 55 for adjusting the amount of air flowing through the pipe 55 is provided in the middle of the pipe 54.

  Also, in the second treatment tank 12, porous activated coals 56 and 57 that serve as a source of aerobic microorganisms for purifying the wastewater in the second treatment tank 12 are drained in the second treatment tank 12. It is arranged in two upper and lower stages so as to be located above the diffuser tube 53. These activated coals 56 and 57 are the same as the activated coal 46 in the first treatment tank 11, for example, in which coal is treated with dilute hydrochloric acid to form fine pores, and aerobic microorganisms are fixed in these fine pores. Then, the milk fat content that could not be processed in the first processing tank 11 is decomposed by the fixed aerobic microorganisms.

  The third treatment tank 13 receives and stores the waste water from the second treatment tank 12, and the waste water stored in the third treatment tank 13 is purified by cyanobacteria that propagate on the surface of the waste water and flows out. It flows out from the pipe 3 as treated water.

  In addition, as shown by a two-dot chain line in FIG. 1, a sterilizer 50 for disinfecting the waste water may be disposed in the third treatment tank 13. Five treatment tanks (disinfection tanks) may be provided. Further, instead of cyanobacteria, a drainage purification process may be performed by hydroponically cultivating a plant such as cabbage.

  On the other hand, as shown in FIG. 2, the wastewater treatment apparatus 1 includes a transparent house that covers at least the third treatment tank 13, that is, a transparent house 60 that covers, for example, the entire tank body 4. For this reason, in the 3rd processing tank 13, the inside of this 3rd processing tank 13 is set in the state suitable for the growth of cyanobacteria by water temperature adjustment and sunlight regardless of the change of the four seasons. Milk fat and the like that could not be processed in the processing tanks 11 and 12 are decomposed. Although not shown, only the third treatment tank 13 having an opening on the upper surface may be covered with a transparent house.

  Next, the operation of the waste water treatment apparatus 1 will be described.

  When the wastewater containing milk fat and cow manure flows through the inflow pipe 2 and flows into the first treatment tank 11, the milk fat content in the wastewater floats on the water surface and is separated in the first treatment tank 11. Further, the precipitated milk fat content is retained near the bottom of the first treatment tank 11.

  When the submersible pump 21 is activated, the floating milk fat component (floating oil component) is sucked from the suction port 22 of the first suction pipe 23 together with the drainage when the flow path switching means is in the floating oil suction state. An aqueous emulsified solution is generated in contact with the ceramic 31 in the housing portion 30, and the aqueous emulsified solution is discharged from the discharge port portion 19 of the discharge pipe 29. Further, when the flow path switching unit is in a state of sucking in the precipitated oil by the control of the control unit, the precipitated milk fat (precipitated oil and fat) is sucked from the suction port portion 24 of the second suction pipe 25 together with the drainage, and the discharge pipe 29 is accommodated. An emulsified aqueous solution is generated in contact with the ceramic 31 in the section 30, and this emulsified aqueous solution is discharged from the discharge port portion 19 of the discharge pipe 29.

  For this reason, the rot of the floating milk fat on the water surface of the waste water in the first treatment tank 11 is prevented, and the precipitated milk fat content does not remain at the bottom of the first treatment tank 11, so that the first treatment tank 11 The whole waste water in 11 is agitated, and the milk fat content and the like that are finely emulsified by this agitation are effectively decomposed by the aerobic microorganisms stagnant in the activated coal 46.

  In addition, since oxygen required for an aerobic microorganism is fully supplied by the air supply by the air supply pipes 26 and 26a and the air supply by the diffuser pipe 43 which is the aeration means 41, activation of the aerobic microorganism can be promoted. In addition, the chlorine-based disinfectant or cleaning agent in the waste water can be scattered by supplying air through the air diffuser 43.

  When the wastewater flows through the upper communication part 14 and flows into the second treatment tank 12, the milk fat and the like that could not be processed in the first treatment tank 11 in the previous process are activated in the second treatment tank 12. Decomposed by aerobic microorganisms stagnant in coals 56 and 57. In addition, the activation of aerobic microorganisms is promoted by supplying air through the air diffusing tube 53.

  Next, when the wastewater flows into the third treatment tank 13 from the lower communication part 15, in this third treatment tank 13, milk fat and the like remaining in the wastewater are decomposed by cyanobacteria and become treated water. And flows out from the outflow pipe 3.

  As described above, in the waste water treatment apparatus 1, the floating milk fat content and the waste water from the first suction pipe 23 can be made into an emulsified aqueous solution by the ceramic 31 having a surface active function, and the precipitated milk fat content from the second suction pipe 25 and Since the wastewater can be made into an emulsified aqueous solution, not only can the rot of the floating milk fat be prevented, but also the precipitated milk fat can be eliminated, and the wastewater containing a large amount of milk fat can be appropriately and efficiently purified. For example, the tank body 4 can be reduced in size, and the manufacturing cost can be reduced.

  Further, the ceramic 31 of the waste water treatment apparatus 1 is provided in a cylindrical shape with an opening at both ends and is exchangeable with the cylindrical main body 35, and is directed inward from the inner peripheral surface of the cylindrical main body 35. Consisting of a plurality of protruding protrusions 36, it has good durability, can be used for a long time, and does not cause clogging of impurities in the cylindrical main body 35, and drains water. The purification processing capacity of the processing apparatus 1 can be improved, and only the projections 36 that have been consumed and reduced can be replaced with new ones. Therefore, it is not necessary to replace the entire ceramic 31, and the running cost can be reduced.

  The protrusion 36 of the ceramic 31 may have the shape shown in FIG. 7. The protrusion 36 shown in FIG. 7 includes a truncated conical portion 36a that is detachably fitted into the mounting hole 39, and the truncated ridge. The shaft portion 36b is provided integrally with the reduced diameter end portion of the conical portion 36a and protrudes inward from the inner peripheral surface of the cylindrical main body 35.

  Further, the configuration is not limited to the configuration in which the plurality of protrusions 36 are spirally arranged so that the aqueous emulsified solution flows as a swirling flow and flows out from the outflow opening 38, and the arrangement of the protrusions 36 is arbitrary. The structure etc. which arranged these along the axial direction of the cylindrical main body 35 may be sufficient.

  On the other hand, the wastewater treatment apparatus 1 is also used for purifying wastewater containing a large amount of oil and fat discharged from restaurants, factories, etc., in addition to parlor drainage containing a large amount of milk fat discharged from milking facilities and the like. Applicable.

  Further, the configuration is not limited to the configuration in which the air supply pipes 26 and 26a are connected to both the second suction pipe 25 and the discharge pipe 29, and the configuration in which the air supply pipe 26 is connected only to the second suction pipe 25 or the air supply pipe. A configuration in which 26a is connected only to the accommodating portion 30 of the discharge pipe 29 may be employed.

It is a schematic sectional drawing of the waste water treatment equipment provided with the ceramic concerning one embodiment of the present invention. It is a schematic perspective view of a waste water treatment apparatus same as the above. It is a perspective view which shows a ceramic same as the above. It is sectional drawing which shows a ceramic same as the above. It is sectional drawing which shows a ceramic same as the above. It is sectional drawing which shows the processus | protrusion of a ceramic same as the above. It is sectional drawing which shows the processus | protrusion of the ceramic which concerns on other embodiment of this invention.

Explanation of symbols

29 Discharge pipe which is piping
31 ceramic
35 Tube body
36 protrusion
37 Inlet opening
38 Outflow opening

Claims (2)

A ceramic having a surface active function to make the oil and fat and drainage into an emulsified aqueous solution in contact with the oil and fat and drainage flowing in the pipe,
A cylindrical main body that has an inflow opening into one end surface in the axial direction through which oil and fat and waste water flow in, and an outflow opening through which the emulsified aqueous solution flows out from the other end surface in the axial direction, and is accommodated in the pipe so as to be able to be taken in and out; ,
A ceramic comprising: a plurality of protrusions provided in an exchangeable manner on the cylindrical main body and protruding inward from an inner peripheral surface of the cylindrical main body. The ceramic according to claim 1, wherein the plurality of protrusions are spirally arranged so that the emulsified aqueous solution flows as a swirling flow from the outflow opening.

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