WO2012004893A1 - Dispositif de traitement des eaux usées - Google Patents

Dispositif de traitement des eaux usées Download PDF

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Publication number
WO2012004893A1
WO2012004893A1 PCT/JP2010/061717 JP2010061717W WO2012004893A1 WO 2012004893 A1 WO2012004893 A1 WO 2012004893A1 JP 2010061717 W JP2010061717 W JP 2010061717W WO 2012004893 A1 WO2012004893 A1 WO 2012004893A1
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WO
WIPO (PCT)
Prior art keywords
carrier
container body
sewage treatment
treatment apparatus
sewage
Prior art date
Application number
PCT/JP2010/061717
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English (en)
Japanese (ja)
Inventor
正志 豊岡
Original Assignee
小川　弘
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 小川　弘 filed Critical 小川　弘
Priority to PCT/JP2010/061717 priority Critical patent/WO2012004893A1/fr
Publication of WO2012004893A1 publication Critical patent/WO2012004893A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/06—Aerobic processes using submerged filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/10—Packings; Fillings; Grids
    • C02F3/105—Characterized by the chemical composition
    • C02F3/108—Immobilising gels, polymers or the like
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/10—Packings; Fillings; Grids
    • C02F3/109—Characterized by the shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • the present invention relates to a sewage treatment apparatus for purifying water such as sewage, village drainage, lakes, swamps, ponds, and rivers discharged from apartment houses such as apartments, hotels, restaurants, hospitals, factories, and the like.
  • an aerobic biological filtration apparatus (a carrier body) is provided with a filter medium-filled fixed layer (carrier layer) filled with a filter medium (carrier) capable of holding microorganisms in a biological filtration tank (container body), and purifies sewage by a biological reaction of microorganisms ( Sewage treatment equipment).
  • a biological filtration apparatus the outflow pipe rises to a level close to the upper interface of the filter medium-filled fixed layer, and almost all the filter medium is immersed in the sewage (see, for example, Patent Document 1).
  • the present invention has been made paying attention to such problems, and can appropriately set an active environment in which microorganisms contained in the carrier layer inside the container are active according to the quality of the sewage at the installation location, It aims at providing the sewage treatment apparatus which can improve efficiency.
  • the sewage treatment apparatus of the present invention comprises: Inside the container body into which sewage can be introduced from above, a carrier layer formed by introducing a large number of carriers carrying microorganisms is provided, and air or oxygen is stored in the sewage stored in the lower part of the container body.
  • a sewage treatment apparatus for draining sewage treated by the microorganisms from a drain pipe connected to a lower part of the container body A plurality of types of carriers are introduced into the container body, and a plurality of carrier layers having different blends of the respective types of carriers are provided, and the drain pipe is connected to the container body from the lower part of the container body.
  • a drain trap is formed by standing upward along the water level, and the water level inside the container body set by the depth of the drain trap is at least a level at which a part of the lowermost carrier layer is submerged. It is a feature. According to this feature, an active environment corresponding to various microorganisms can be constructed in the container body by a plurality of types of carriers, and at least the lowermost carrier layer carries microorganisms activated by the carrier in water. The air or oxygen is dissolved in the sewage by the aeration means so that a large amount of air or oxygen is supplied to the carrier in the water, and the microorganisms in the carrier in the water are activated.
  • the sewage treatment apparatus of the present invention is A water level changing means for changing the water level inside the container body by changing the water depth of the drain trap is provided. According to this feature, the water level inside the container body can be changed according to the quality of the sewage at the place where the sewage treatment apparatus is installed, and the water level inside the container body can be changed without changing the dimensions of the container body. In addition to being suitable for mass production of container bodies, even if the water quality of the installation location changes after the installation of the sewage treatment device, the activity environment in which microorganisms are active is appropriately set by changing the water level inside the container body It becomes possible to respond.
  • the sewage treatment apparatus of the present invention is
  • the container body is provided with a partition body for partitioning the interior of the container body in a vertical direction so that sewage can pass through, and the carrier layers are partitioned by the partition body. According to this feature, the carrier layers can be prevented from being mixed by the sewage water flow.
  • the sewage treatment apparatus of the present invention is The outer periphery of the container body is provided with confirmation means for confirming an arrangement position of the partition body. According to this feature, the arrangement position of each carrier layer partitioned by the partition can be confirmed from the outside of the container body, and the depth of the drain trap is set according to the quality of the sewage at the location where the sewage treatment apparatus is installed. In this case, it is possible to easily determine whether each carrier layer is submerged.
  • the sewage treatment apparatus of the present invention is
  • the air diffuser is a microbubble generator that generates fine bubbles in water. According to this feature, air or oxygen stays in the water for a long time due to fine bubbles, and a large amount of air or oxygen can be supplied to the carrier in water.
  • the sewage treatment apparatus of the present invention is
  • the microbubble generating means is characterized by generating bubbles having a bubble diameter of 30 to 50 ⁇ m. According to this feature, the bubble diameter is such that bubbles with a diameter of 30 to 50 ⁇ m stay in water for the longest time.
  • the sewage treatment apparatus of the present invention is At least one of the plurality of types of carriers is a fluid carrier that is fluidized by a water stream. According to this feature, the treatment efficiency of the wastewater by the microorganisms activated in the water can be improved because the fluid carrier is flowed and a large amount of water hits the fluid carrier.
  • the sewage treatment apparatus of the present invention is The ratio of the fluid carrier contained in the lowermost carrier layer is larger than the proportion of fluid carriers contained in the other carrier layers. According to this feature, many fluid carriers are submerged in the sewage, and the treatment efficiency of the sewage by microorganisms activated in water can be improved.
  • the sewage treatment apparatus of the present invention is
  • the air diffusing means is a micro bubble generating means for generating fine bubbles in the water, and is a partition that vertically partitions the inside of the container body in a state in which the upper part of the lowermost carrier layer can pass sewage.
  • a space in which the fluid carrier can flow is formed in the lowermost carrier layer, and the fluid carrier is fluidized by the water flow generated by the microbubble generating means in the lowermost carrier layer. It is characterized by being.
  • a space in which the fluid carrier can flow is secured in the lowermost carrier layer by the partition, and the fluid carrier can freely flow in the lowermost carrier layer by the water flow generated by the microbubble generating means.
  • the air or oxygen supplied into the sewage by the microbubble generating means is efficiently supplied to the microorganisms of the fluid carrier, thereby improving the treatment efficiency of the sewage.
  • the sewage treatment apparatus of the present invention is
  • the fluid carrier has a wing for receiving a water flow. According to this feature, the fluid carrier easily flows when the wing part receives the water flow.
  • the sewage treatment apparatus of the present invention is
  • the fluid carrier has a specific gravity of 0.9 to 0.95. According to this feature, the specific gravity of the fluid carrier becomes smaller than the specific gravity of the sewage, and the fluid carrier can flow freely in the sewage without sinking.
  • the sewage treatment apparatus of the present invention is
  • the fluid carrier is formed of polypropylene. According to this feature, the fluid carrier has durability and water resistance, so that the fluid carrier is prevented from being corroded and is not easily damaged even if the fluid carrier is repeatedly subjected to water flow.
  • the sewage treatment apparatus of the present invention is At least one of the plurality of types of carriers is formed of a polyvinyl acetal porous material having fine continuous pores. According to this feature, the fine continuous pores of the polyvinyl acetal porous body are easily impregnated with oil, and the oil in the sewage can be carried for a long time and decomposed by microorganisms.
  • the sewage treatment apparatus of the present invention is
  • the polyvinyl acetal porous material has a pore size of 5 to 800 ⁇ m. According to this feature, the pore diameter of the polyvinyl acetal porous body having a pore diameter of 5 to 800 ⁇ m is the most easily supported oil.
  • the sewage treatment apparatus of the present invention is
  • the polyvinyl acetal porous material has a porosity of 80 to 95%. According to this feature, the polyvinyl acetal porous material having a porosity of 80 to 95% has the porosity that can most easily carry oil.
  • the sewage treatment apparatus of the present invention is At least one of the plurality of types of carriers is a fixed carrier that is fixedly arranged inside the container body. According to this feature, it becomes possible to prevent the fixed carriers from colliding with each other and the fixed carrier from colliding with the inner surface of the container body, and it is possible to attach many microorganisms and the like that are vulnerable to collision to the surface of the fixed carrier.
  • the sewage treatment apparatus of the present invention is
  • the fixed carrier is included in at least a carrier layer disposed above the water level inside the container body. According to this feature, the treatment efficiency of sewage can be improved by supporting the microorganisms activated in the air on the fixed carrier.
  • the sewage treatment apparatus of the present invention is It is characterized by being provided above the water level inside the container body and embedded in a carrier layer containing the fixed carrier, and provided with a water diffuser for supplying air or oxygen into the carrier layer. .
  • the air or oxygen supplied from the water diffusing means is supplied to the fixed carrier directly without being almost dissolved in the sewage, and the air or oxygen is efficiently supplied to the microorganisms of the fixed carrier.
  • the wastewater treatment efficiency can be improved.
  • the sewage treatment apparatus of the present invention is
  • the fixed carrier is formed of a ceramic porous body having fine continuous pores. According to this feature, microorganisms and the like that are easily affected by water flow can be carried in the deep part of the fixed carrier that is a ceramic porous body.
  • the sewage treatment apparatus of the present invention is The ceramic porous body has a pore diameter of 180 to 380 ⁇ m. According to this feature, the ceramic porous body having a pore diameter of 180 to 380 ⁇ m has a pore diameter that is most easily loaded with microorganisms.
  • the sewage treatment apparatus of the present invention is At least one of the plural types of carriers is formed of a urethane foam-based porous body having fine continuous pores subjected to film removal treatment.
  • the fine continuous pores of the urethane foam-based porous material are easily impregnated with oil, and can be decomposed by microorganisms by supporting the oil in the sewage for a long time. Since the porous body is an inexpensive material, the carrier can be manufactured at low cost.
  • FIG. FIG. 2 is a cross-sectional plan view taken along the line AA in FIG. 1 showing the sewage treatment apparatus. It is a perspective view which shows a fixed carrier. It is a perspective view which shows a fluid carrier. It is a perspective view which shows a PVA support
  • the sewage treatment apparatus according to Example 1 will be described with reference to FIGS.
  • Reference numeral 1 in FIG. 1 is a sewage treatment apparatus to which the present invention is applied.
  • the sewage treatment apparatus 1 has a container body 2 into which sewage is introduced, and the container body 2 is erected on the ground by a support member 3.
  • the container body 2 is formed as a substantially circular cylindrical body in a cross-sectional plan view (see FIG. 2), and the container body 2 is a vertically long cylindrical body whose vertical dimension is larger than its diameter dimension. Yes.
  • an inlet pipe 4 for introducing dirty water into the container body 2 is connected to the upper part of the container body 2, and gas, air, and overflow water generated inside the container body 2 are discharged.
  • An upper discharge pipe 5 is connected.
  • mesh plates 9 and 10 are provided at the openings of the introduction pipe 4 and the upper discharge pipe 5 so that carriers 6, 7, and 8 described later do not flow out.
  • the bottom part 11 of the container body 2 has a shape that narrows downward, and a drain pipe 12 for draining the treated sewage into a sewer pipe (not shown) at the lower end of the bottom part 11. It is connected.
  • the drain pipe 12 extends laterally from the lower part of the container body 2 and rises upward along the container body 2 to form a drain trap 13.
  • the upper opening of the container body 2 can be opened and closed by the lid body 14, and a plurality of types of carriers 6, 7, and 8 that carry aerobic microorganisms are introduced.
  • a plurality of partitions 15 made of a punching metal plate are provided inside the container body 2.
  • the partition 15 is a perforated plate in which a large number of small holes are formed in a stainless plate member.
  • the holding convex part 16 holding the partition 15 is formed on the inner peripheral surface of the container body 2. Further, on the outer peripheral surface of the container body 2 corresponding to the holding convex portion 16, a confirmation convex portion 17 (confirming means) that can confirm the arrangement position of the partition 15 from the outside of the container body 2 is formed.
  • the partition 15 is configured to partition the interior of the container body 2 in a vertical direction so that sewage can pass through the small holes. In the space partitioned by the partition body 15 inside the container body 2, a large number of carriers 6 are provided. , 7 and 8 are formed as a plurality of carrier layers 18, 19 and 20.
  • the plurality of carriers 6, 7, 8 can be held at fixed positions inside the container body 2, and the carriers 6, 7, 8 are connected to the outside of the container body 2 from the drain pipe 12. It is designed not to leak. Moreover, it can prevent that the support
  • three carrier layers 18, 19, and 20 are formed using the three partition bodies 15 in the upper, middle, and lower stages. Also, three types of carriers 6, 7, and 8 are used, and the types of carriers 6, 7, and 8 included in the carrier layers 18, 19, and 20 are different. Three types of carriers 6, 7, and 8 are shown in FIGS.
  • the fixed carrier 6 has a substantially spherical shape.
  • the fixed carrier 6 is a ceramic porous body having fine continuous pores produced from natural clay as a raw material, and can support a large number of microorganisms.
  • the pore diameter of this ceramic porous body is 180 to 380 ⁇ m.
  • the ceramic porous body having a pore size of 180 to 380 ⁇ m has the pore size that is most likely to support microorganisms.
  • a ceramic porous body having a pore diameter of about 280 ⁇ m is an ideal medium for microorganisms.
  • the components of the fixed carrier 6 include about 53% of silicon dioxide, about 18% of alumina, about 15% of iron oxide, and about 6% of calcium oxide, and chloride and acid solubility. Contains sulfides and total sulfides.
  • the fixed carrier 6 has a large number of fine pores formed on the surface 21 and the deep part 22, a large number of microorganisms can be carried on the surface 21, and a lot of the deep part 22 of the fixed carrier 6 can also be carried. Microorganisms can be supported for a long time. Note that microorganisms or the like that are easily affected by the water flow can be carried on the deep portion 22 of the fixed carrier 6.
  • FIG. 4 shows a fluid carrier 7 that is fluidized by a water stream.
  • the fluid carrier 7 has a substantially petal shape and can support many microorganisms by its complicated shape.
  • the fluid carrier 7 is formed by extrusion using a synthetic resin such as polypropylene. Therefore, the fluid carrier 7 has durability and water resistance, and the fluid carrier 7 is prevented from being corroded, and is not easily damaged even if the fluid carrier 7 is repeatedly subjected to water flow.
  • the specific gravity of the fluid carrier 7 is 0.9 to 0.95.
  • the specific gravity of the fluid carrier 7 is smaller than the specific gravity of the sewage, and the fluid carrier 7 can flow freely in the sewage without sinking.
  • the fluid carrier 7 is formed with wings 23 for receiving a water flow, and the fluid carrier 7 is easy to flow when the wings 23 receive the water flow. Then, the fluid carrier 7 is flowed so that a large amount of water hits the fluid carrier 7, so that the treatment efficiency of sewage by microorganisms activated in water can be improved.
  • FIG. 5 shows a PVA carrier 8 formed of a polyvinyl acetal porous material having fine continuous pores.
  • the PVA support 8 has a substantially cubic shape, and can support a large number of microorganisms by a large number of fine continuous pores.
  • the polyvinyl acetal porous material used in the PVA carrier 8 is a cross-linking reaction (acetalization reaction) of a reaction solution containing polyvinyl alcohol (PVA), a pore-forming agent, a cross-linking agent, a cross-linking catalyst, and a polyurethane resin. Then, the pore-forming material is removed to produce a porous body having fine continuous pores.
  • PVA polyvinyl alcohol
  • the average pore diameter of the polyvinyl acetal porous material in this example is in the range of 5 to 800 ⁇ m, and the porosity is in the range of 80 to 95%.
  • the trapping efficiency when the polyvinyl acetal porous material in this example filters sewage is 10 to 70%, and the trapping accuracy is 30 to 200 ⁇ m.
  • the fine continuous pores of the polyvinyl acetal porous material are easily impregnated with oil, and the oil in the sewage can be supported on the PVA carrier 8 for a long time and decomposed by microorganisms.
  • the polyvinyl acetal porous material having a pore diameter of 5 to 800 ⁇ m has a pore size that is most easily loaded with oil, and the polyvinyl acetal porous material having a porosity of 80 to 95% has the most oil content.
  • the porosity is easy to carry.
  • the various carriers 6, 7, and 8 are formed such that the PVA carrier 8 is larger than the fluid carrier 7 and the fixed carrier 6 is larger than the PVA carrier 8.
  • the proportion of the PVA carrier 8 contained in the upper carrier layer 18 is larger than the proportion of the PVA carrier 8 contained in the other carrier layers 19 and 20.
  • the upper carrier layer 18 contains the fixed carrier 6 in a smaller proportion than the PVA carrier 8.
  • the ratio of the fixed carrier 6 included in the middle carrier layer 19 is larger than the ratio of the fixed carrier 6 included in the other carrier layers 18 and 20. Further, the middle carrier layer 19 contains the fluid carrier 7 in a smaller proportion than the fixed carrier 6.
  • the fixed carrier 6 is filled in the entire region sandwiched between the upper and lower partitions 15 and is disposed so as not to move inside the container body 2.
  • the fixed carrier 6 is prevented from flowing due to the flow of sewage, and the fixed carriers 6 can be prevented from colliding with each other and the fixed carrier 6 can be prevented from colliding with the inner surface of the container body 2. Etc. can be attached to the surface of the fixed carrier 6, and damage to the fixed carrier 6 is also prevented. Further, in the middle carrier layer 19, the fluid carrier 7 swings in the gap between the fixed carriers 6.
  • the ratio of the fluid carrier 7 included in the lower carrier layer 20 (lowermost carrier layer) is larger than the ratio of the fluid carrier 7 included in the other carrier layers 18 and 19. Further, the lower carrier layer 20 contains the PVA carrier 8 in a smaller proportion than the fluid carrier 7.
  • the space between the upper and lower partitions 15 provided with the lower carrier layer 20 is formed in such a size that the fluid carrier 7 can freely flow.
  • the PVA carrier 8 contained in the lower carrier layer 20 can also flow together with the fluid carrier 7, and this PVA carrier 8 also constitutes the fluid carrier of the present invention.
  • the water level inside the container body 2 is a water level F1 at which the lower carrier layer 20 is submerged from the reservoir 24. Therefore, many fluid carriers 7 are submerged in sewage, and the treatment efficiency of sewage by microorganisms activated in water can be improved.
  • the upper carrier layer 18 and the middle carrier layer 19 are disposed above the water level inside the container body 2. Therefore, the fixed carrier 6 is arranged on the water, and the microorganisms activated in the air can be carried on the fixed carrier 6 to improve the treatment efficiency of sewage.
  • the water level F1 may become slightly higher depending on the amount of sewage introduced, and the partition 15 between the lower carrier layer 20 and the middle carrier layer 19 may be submerged.
  • the small holes of the partition 15 are sized to allow the flow carrier 7 to pass through, but the fixed carrier 6 cannot pass through, so that the flow carrier 7 becomes small in the partition 15 due to fluctuations in the water level F1. Passing through the hole prevents clogging.
  • the water level inside the container body 2 can be set by the water depth dimension D of the drain trap 13 described above.
  • the drain pipe 12 that forms the drain trap 13 connects the horizontal extension pipe 25 arranged below the container body 2, the vertical extension pipe 26 arranged on the side of the container body 2, and these pipes. Bending tubes 27, 28, and 29.
  • the installation operator of the sewage treatment apparatus 1 can set the water level inside the container body 2 by appropriately selecting the vertical dimension of the vertical extending pipe 26 according to the quality of sewage at the installation location.
  • the vertically extending pipe 26 is the water level changing means of the present invention.
  • the depth D of the drain trap 13 is the combined length of the vertical extension pipe 26 and the bent pipe 28, and the operator of the sewage treatment apparatus 1 installs the vertical extension pipe 26.
  • the water depth D of the drain trap 13 can be changed, and the inside of the container body 2 can be appropriately set to a low water level F1 and a high water level F2.
  • the installation operator of the sewage treatment apparatus 1 determines whether the upper, middle, or lower carrier layers 18, 19, and 20 are submerged by checking the confirmation convex portion 17 described above. It can be done easily.
  • the vertical dimension of the vertically extending pipe 26 is shortened to a low water level F1, thereby reducing the sewage. Can be set to a short residence time in the container body 2.
  • the vertical dimension of the vertically extending pipe 26 is lengthened to increase the water level F2, thereby reducing the Can be set to a long residence time in the container body 2.
  • the residence time can be changed as appropriate according to the quality of the sewage at the place where the sewage treatment apparatus 1 is installed.
  • an ejection part 31 of a microbubble generator 30 (aeration means) for supplying air into the sewage in the storage part 24 is connected to the lower part of the container body 2.
  • the microbubble generator 30 is connected to a pump 32 connected to the storage unit 24, and sewage sucked from the storage unit 24 by the pump 32 is supplied to the microbubble generator 30, and is discharged from the ejection unit 31. It is ejected toward the storage part 24.
  • the microbubble generator 30 includes a supply unit 33 connected to a pump 32 and supplied with sewage, an ejection unit 31 from which sewage is ejected, and the supply unit 33 and the ejection unit 31. It has a substantially cylindrical shape (straight pipe shape) having a compression portion 34 that communicates with each other and compresses sewage.
  • the inner diameter of the supply unit 33 that is an inlet of sewage is narrowed toward the compression unit 34.
  • the inner diameter of the ejection part 31 is increased from the compression part 34. That is, the inner diameter of the compression part 34 is minimized, and the flow rate of sewage that has passed through the compression part 34 becomes high, and is ejected from the ejection part 31.
  • the microbubble generator 30 is provided with an intake portion 36 for taking in compressed air supplied from a blower motor 35 disposed below the container body 2.
  • natural air intake may be performed from the air intake unit 36 without using the blower motor 35.
  • the air taken in from the intake part 36 is jetted into the compression part 34 through a plurality of branched pipes 37. Bubbles ejected from the branch pipe 37 into the compression unit 34 become fine bubbles (microbubbles) and are mixed with sewage in the compression unit 34.
  • the fine bubbles are ejected from the ejection part 31 into the storage part 24.
  • the microbubble generator 30 is a microbubble generating means of the present invention that generates fine bubbles in water.
  • the fine bubbles generated by the microbubble generator 30 cause air (or oxygen) to stay in the water for a long time, so that a large amount of air can be supplied to the carriers 7 and 8 in the water.
  • the microbubble generator 30 generates bubbles having a bubble diameter of 30 to 50 ⁇ m.
  • the bubble diameter is 30-50 ⁇ m, and the bubble diameter stays in water for the longest time.
  • the sewage in the storage part 24 and the lower carrier layer 20 is made to flow by the water flow ejected from the ejection part 31 of the microbubble generator 30.
  • the fluid carrier 7 is caused to flow by the water flow generated by the microbubble generator 30.
  • the flow carrier 7 can freely flow in the lower carrier layer 20 by the water flow generated by the microbubble generator 30, and the air supplied to the sewage by the microbubble generator 30 is transferred to the fluid carrier. 7 can be efficiently supplied to the microorganisms to improve the treatment efficiency of sewage.
  • air or oxygen
  • the middle carrier layer 19 and the upper carrier layer 18 Sufficient air is supplied to 19 and the upper carrier layer 18.
  • an active environment corresponding to various microorganisms can be constructed in the container body 2 by using a plurality of types of carriers 6, 7, and 8, and at least the carrier layer 20 in the lower stage.
  • the microorganisms contained in the plurality of carrier layers 18, 19, and 20 Is active
  • the dynamic environment can be set appropriately, it is possible to improve the processing efficiency of the wastewater.
  • the drain pipe 12 in the second embodiment has a vertical telescopic pipe 38 that is telescopic in the vertical direction.
  • a vertical telescopic pipe 38 that is telescopic in the vertical direction.
  • An actuator device 39 that changes the vertical dimension of the vertical telescopic pipe 38 is connected to the upper part of the drain pipe 12.
  • the vertical expansion tube 38 can be expanded and contracted to set the water level inside the container body 2.
  • the vertical telescopic tube 38 By shortening the vertical telescopic tube 38, the water level inside the container body 2 can be set to the low water level F1, and by extending the vertical telescopic tube 38, the water level inside the container body 2 can be set to the high water level F2. it can.
  • the vertical telescopic tube 38 is the water level changing means of the present invention.
  • the storage unit 24 of the container body 2 is provided with an air diffuser tube 40 for supplying air into the sewage in the storage unit 24, and the air diffuser tube 40 is disposed below the container body 2. The air supplied from the inside is supplied into the reservoir 24.
  • the air diffuser 40 has a cylindrical member 42 in which a large number of holes 41 are formed on the outer periphery.
  • An air supply pipe 43 extending from the blower motor 35 is connected to one end of the cylindrical member 42, and compressed air is supplied from the blower motor 35 to the inside of the cylindrical member 42.
  • the outer peripheral surface of the cylindrical member 42 is covered with a membrane member 44 in which minute holes are formed, and both ends thereof are fastened with a band 45.
  • the vertical telescopic pipe 38 (water level changing means) for changing the water level inside the container body 2 by changing the water depth dimension D of the drain trap 13 is provided.
  • the water level inside the container body 2 can be changed according to the quality of the sewage at the place where the sewage treatment apparatus 1a is installed, and the water level inside the container body 2 can be changed without changing the dimensions of the container body 2.
  • the activity environment in which microorganisms are active can be appropriately changed by changing the water level inside the container body 2 It becomes possible to respond by setting.
  • the vertically extending pipe 26 of the drain pipe 12 in the third embodiment includes a plurality of straight pipes 46 and 47 and a T-shaped pipe 48.
  • the T-tube 48 is provided with a valve 49. By opening and closing the valve 49, the depth D of the drain trap 13 can be changed.
  • the valve 49 is a water level changing means of the present invention.
  • the valve 49 water level changing means for changing the water level inside the container body 2 is provided. Since the water level inside the container body 2 can be changed according to the quality of the sewage at the place where the sewage treatment apparatus 1b is installed, and the water level inside the container body 2 can be changed without changing the dimensions of the container body 2, the container Not only is it suitable for mass production of the body 2, but even if the water quality at the installation location changes after the installation of the sewage treatment apparatus 1 b, the environment in which the microorganisms are active is appropriately set by changing the water level inside the container body 2. Will be able to respond.
  • one partition 15 is provided in the container body 2 in Example 4.
  • a plurality of carrier layers 50, 51, 52 filled with a large number of carriers 6, 7, 8 are formed above the partition 15.
  • a carrier layer 50 composed only of the fluid carrier 7 and a carrier layer 51 composed only of the fixed carrier 6 are alternately stacked.
  • a carrier layer 51 composed only of the fixed carrier 6 and a carrier layer 52 composed only of the PVA carrier 8 are alternately laminated.
  • the water level F1 inside the container body 2 is set to a height at which several carrier layers 50 and 51 on the lower side are submerged.
  • a water diffusion tube 53 having the same configuration as the air diffusion tube 40 provided in the storage unit 24 and disposed above the water level inside the container body 2 is embedded in the carrier layer 51 including at least the fixed carrier 6. Has been.
  • the water diffusing pipe 53 directly supplies air supplied from a blower motor 35 disposed below the container body 2 toward the carrier layer 51.
  • the water diffusion pipe 53 (water diffusion means) that is disposed above the water level F1 inside the container body 2 and is embedded in the carrier layer 51 including the fixed carrier 6 and supplies air into the carrier layer 51.
  • the air supplied from the water diffusing means is supplied to the fixed carrier 6 directly without being dissolved in the sewage, and the air is efficiently supplied to the microorganisms of the fixed carrier 6.
  • the treatment efficiency of sewage can be improved.
  • the installation operator of the sewage treatment apparatus 1 may change the vertical dimension of the vertically extending pipe 26 to set the water level inside the container body 2 to the high water level F2, so that the water diffusion pipe 53 is submerged and used. it can.
  • the water level inside the container body 2 according to the quality of the sewage at the place where the sewage treatment apparatus 1 is installed, the activity environment in which the microorganisms contained in the plurality of carrier layers 50, 51, 52 are active is appropriately set. It is possible to improve the treatment efficiency of sewage.
  • Examples 1 to 4 three types of carriers, ie, the fixed carrier 6, the fluid carrier 7, and the PVA carrier 8, are used, but the number of types of carriers used in the sewage treatment apparatus 1 of the present invention is limited to three. Without limitation, two types of carriers may be used, or four or more types of carriers may be used.
  • Examples 1 to 3 a plurality of types of carriers 6, 7, and 8 are introduced into the carrier layers 18, 19, and 20 at different blending ratios.
  • blending ratio can be suitably changed according to the water quality of the sewage which the sewage treatment apparatus 1 processes.
  • One carrier layer 18, 19, 20 may be filled with only one type of carrier 6, 7, 8.
  • air is supplied from the blower motor 35 into the container body 2.
  • the gas supplied from the blower motor 35 is not only air but also aerobic such as oxygen and ozone. Any gas that activates microorganisms may be used.
  • a carrier formed of a urethane foam porous body having fine continuous pores subjected to film removal treatment can also be used.
  • the fine continuous pores of the urethane foam porous body are easily impregnated with oil, and can be decomposed by microorganisms by supporting the oil in wastewater for a long time. Since the material is cheaper than the acetal porous material (PVA), the carrier can be produced at low cost.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

L'invention concerne un dispositif de traitement des eaux usées dans lequel il est possible de configurer correctement, en fonction de la qualité des eaux usées à l'emplacement d'installation, l'environnement d'activité dans lequel les microorganismes présents dans la couche de substrat à l'intérieur d'un corps conteneur sont actifs et d'améliorer l'efficacité de traitement des eaux usées. Différents types de substrats (6, 7, 8) sont injectés à l'intérieur d'un corps conteneur (2) et une pluralité de couches de substrat (18, 19, 20) contenant différentes proportions des différents substrats (6, 7, 8) sont placées à l'intérieur du corps conteneur (2). Un piège d'eau de sortie (13) est formé grâce à un tube d'eau de sortie (12) qui remonte à partir de la partie basse du corps conteneur (2) de façon à s'étendre le long du corps conteneur (2). Le niveau d'eau (F1) à l'intérieur du corps conteneur (2) défini en fonction de la profondeur d'eau (D) dans le piège d'eau de sortie (13) est à un niveau (F1) tel qu'une partie d'au moins la partie la plus basse de la couche de substrat (20) soit immergée.
PCT/JP2010/061717 2010-07-09 2010-07-09 Dispositif de traitement des eaux usées WO2012004893A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/061717 WO2012004893A1 (fr) 2010-07-09 2010-07-09 Dispositif de traitement des eaux usées

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/061717 WO2012004893A1 (fr) 2010-07-09 2010-07-09 Dispositif de traitement des eaux usées

Publications (1)

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WO2012004893A1 true WO2012004893A1 (fr) 2012-01-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015073917A (ja) * 2013-10-07 2015-04-20 株式会社クラレ 油含有排水処理方法

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JPS5861887A (ja) * 1981-10-09 1983-04-13 Kubota Ltd 廃水の処理方法
JPS62277196A (ja) * 1986-05-23 1987-12-02 Sanki Eng Co Ltd 流動床型微生物反応器
JPH01123695A (ja) * 1987-11-10 1989-05-16 Mitsubishi Kakoki Kaisha Ltd 固定床式嫌気性処理槽
JPH03181392A (ja) * 1989-12-07 1991-08-07 Tekisui Eng Kk 粒状媒体流動層反応装置
JPH0483593A (ja) * 1990-07-26 1992-03-17 Meidensha Corp 排水中の窒素およびリンの同時除去処理装置
JPH04193398A (ja) * 1990-11-27 1992-07-13 Nkk Corp 汚水の処理方法
JPH0522097U (ja) * 1991-09-06 1993-03-23 株式会社西原環境衛生研究所 廃水処理装置
JPH1052268A (ja) * 1996-05-01 1998-02-24 Kanebo Ltd 微生物担持体及びその製造方法
JPH1028964A (ja) * 1996-07-16 1998-02-03 Rifuretsushiya:Kk 浄水装置
JPH1192568A (ja) * 1997-07-22 1999-04-06 Kanebo Ltd スポンジ状球状粒子およびその製造方法
JPH1157349A (ja) * 1997-08-27 1999-03-02 Rooreru Kk 濾過材
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JP2000271583A (ja) * 1999-01-19 2000-10-03 Inax Corp 浄化槽
JP2000317486A (ja) * 1999-05-13 2000-11-21 Inax Corp 水処理用充填材
JP2000061445A (ja) * 1999-08-02 2000-02-29 Seisui:Kk 機能セラミックの触媒水を用いた排液処理システム
JP2001347286A (ja) * 2000-06-06 2001-12-18 Rengo Co Ltd 多孔性中空体、これを用いた微生物固定化担体、及び多孔性中空体の製造方法
JP2003001287A (ja) * 2001-06-26 2003-01-07 Cleate Resource Kk 浮遊物体、及びその製造方法
JP2003103285A (ja) * 2001-09-28 2003-04-08 Noritake Co Ltd 水質浄化用多孔体
JP2004250593A (ja) * 2003-02-20 2004-09-09 Bridgestone Corp 親水性軟質ポリウレタンフォーム及びその製造方法、並びに微生物固定化担体、汚水浄化方法及び汚水浄化装置
JP2006247469A (ja) * 2005-03-08 2006-09-21 Sanyo Electric Co Ltd 汚水処理装置
JP2007136409A (ja) * 2005-11-22 2007-06-07 Sharp Corp 水処理方法および水処理装置
JP2007319789A (ja) * 2006-06-01 2007-12-13 Sharp Corp 水処理方法および水処理装置
JP2008212865A (ja) * 2007-03-06 2008-09-18 Nihon Suido Consultants Co Ltd 硝化槽
JP2009166018A (ja) * 2008-01-14 2009-07-30 Seisui:Kk 排水処理装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015073917A (ja) * 2013-10-07 2015-04-20 株式会社クラレ 油含有排水処理方法

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