WO2019043982A1 - WASTEWATER EVAPORATOR - Google Patents

WASTEWATER EVAPORATOR Download PDF

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Publication number
WO2019043982A1
WO2019043982A1 PCT/JP2018/003836 JP2018003836W WO2019043982A1 WO 2019043982 A1 WO2019043982 A1 WO 2019043982A1 JP 2018003836 W JP2018003836 W JP 2018003836W WO 2019043982 A1 WO2019043982 A1 WO 2019043982A1
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WO
WIPO (PCT)
Prior art keywords
waste water
nozzle
pressure air
evaporator
water
Prior art date
Application number
PCT/JP2018/003836
Other languages
English (en)
French (fr)
Inventor
Kenji Sano
Toshihiro Imada
Akiko Suzuki
Original Assignee
Kabushiki Kaisha Toshiba
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 Kabushiki Kaisha Toshiba filed Critical Kabushiki Kaisha Toshiba
Priority to JP2019505541A priority Critical patent/JP6786705B2/ja
Publication of WO2019043982A1 publication Critical patent/WO2019043982A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/16—Evaporating by spraying
    • B01D1/20—Sprayers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/005—Nozzles or other outlets specially adapted for discharging one or more gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/10—Treatment of water, waste water, or sewage by heating by distillation or evaporation by direct contact with a particulate solid or with a fluid, as a heat transfer medium
    • C02F1/12—Spray evaporation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/208—Off-grid powered water treatment
    • Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
    • 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
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

Definitions

  • Embodiments described herein relate generally to a waste water evaporator that discharges no waste water outside.
  • the ZLD is a system which extracts clean water from drainage or dirty water through various steps, and then ultimately evaporates and solidifies waste water of concentrated pollutants, without discharging waste water outside. In the final step of the ZLD, large amounts of energy are needed for evaporating water in the waste water.
  • the final waste water is introduced into a large outdoor waste water pond, called a solar pond, and the introduced waste water is evaporated by the heat of sunlight.
  • This method requires significantly large areas and enormous time.
  • slow evaporation speed decreases treatment speed.
  • evaporation promoting devices For outdoor waste water ponds, various kinds of evaporation promoting devices have been in actual use. As one of the largest evaporation promoting devices, a device that is an application of a device itself that produces man-made snow at ski areas, i.e., a snow machine, is well known. As small-sized devices, floating-type devices having a spraying device are widely used. In these evaporation promoting devices, evaporation of waste water is promoted by spraying waste water from a spray nozzle, and thus waste water that gets clogged in the spray nozzle cannot be used. For this reason, a step of filtering waste water is necessarily included in the waste water evaporative treatment using these evaporation promoting devices so as to spray waste water which is not viscous and does not contain solid material.
  • Patent Document 1 Jpn. Pat. Appln. KOKAI Publication No. 11-253929
  • FIG. 1 is a schematic diagram illustrating a configuration of a waste water evaporator of the first embodiment.
  • FIG. 2 is a picture showing a simulation using the waste water evaporator of the first embodiment.
  • FIG. 3 is a schematic diagram illustrating a configuration in which an ejection hole of a nozzle of the waste water evaporator of the first embodiment is arranged underwater.
  • FIG. 4 is a picture showing a simulation in a state where the ejection hole of the nozzle of the waste water evaporator of the first embodiment is arranged underwater.
  • FIG. 5 is a schematic diagram illustrating a configuration of the waste water evaporator of the second embodiment.
  • FIG. 6 is a picture showing a simulation using the waste water evaporator of the second embodiment.
  • FIG. 7 is a schematic diagram illustrating a configuration of the waste water evaporator of the third embodiment.
  • FIG. 8 is a picture showing a simulation using the waste water evaporator of the third embodiment.
  • FIG. 9 is a schematic diagram illustrating a configuration of the waste water evaporator of the fourth embodiment.
  • FIG. 10 is a schematic diagram illustrating a configuration of the waste water evaporator of the fifth embodiment.
  • FIG. 11 is a schematic diagram illustrating a configuration of the waste water evaporator of the sixth embodiment.
  • a waste water evaporator includes a waste water pond to store a waste water; and a nozzle which includes an ejection hole arranged approximately at a water surface position of the waste water and configured to eject high-pressure air, and is configured to atomize the waste water by the high-pressure air ejected from the ejection hole and discharge the mist together with the high-pressure air into a space.
  • waste water treatment apparatuses of embodiments will be explained with reference to FIGS. 1 to 11.
  • FIG. 1 shows a waste water evaporator 1 of the first embodiment.
  • the waste water evaporator 1 includes a waste water pond 2, a nozzle 3, and a compressor 5.
  • the waste water evaporator 1 is an evaporation drying apparatus which promotes evaporation of waste water (waste liquid) 21 by atomizing the waste water 21 stored in the waste water pond 2 by ejecting high-pressure air from the nozzle 3.
  • the waste water pond 2 is a water storage tank in which the waste water 21 is stored.
  • the waste water pond 2 is, for example, a solar pond which is provided outdoors and evaporates stored waste water by using heat of sunlight.
  • the waste water pond 2 may be a large-sized pond like a solar pond, and may be a small-sized pond installed indoors.
  • a water surface 23 of the waste water 21 is in parallel with respect to a horizontal direction.
  • the nozzle 3 is connected to the compressor 5 via a connecting pipe 4.
  • the compressor 5 is a compressor which compresses air to eject high-pressure air.
  • the compressor 5 is, for example, arranged outside the waste water pond 2.
  • the nozzle 3 is, for example, fixed to a floating member 24 afloat on a water surface 23 of the waste water 21 in the waste water pond 2.
  • the nozzle 3 includes an ejection hole 31 at a tip end. High-pressure air generated by the compressor 5 is supplied to the nozzle 3 through the connecting pipe 4, and is ejected outside from the ejection hole 31 of the nozzle 3.
  • the nozzle 3 is a jet ejection nozzle capable of ejecting the high-pressure air generated by the compressor 5.
  • a spray direction R is specified.
  • the spray direction R is a direction in which the nozzle 3 ejects the high-pressure air.
  • the spray direction R is specified according to a shape of a tip end portion of the nozzle 3 and an orientation of the ejection hole 31 of the nozzle 3. With the high-pressure air ejected from the ejection hole 31 of the nozzle 3, a jet stream 33 along the spray direction R is discharged.
  • the ejection hole 31 of the nozzle 3 is arranged approximately on a water surface of the waste water 21 introduced into the waste water pond 2, i.e., near the water surface 23.
  • the ejection hole 31 of the nozzle 3 is arranged on an upper side from the water surface 23.
  • a distance D from the ejection hole 31 of the nozzle 3 to the water surface 23 is preferably short.
  • the distance D from the ejection hole 31 of the nozzle 3 to the water surface 23 is, for example, 3 cm or less.
  • An optimal value of the distance D can change depending on a pressure of the jet stream 33 ejected from the nozzle 3 and physical properties of the waste water 21.
  • the distance D from the ejection hole 31 of the nozzle 3 to the water surface 23 is, for example, maintained constant by the nozzle 3 being fixed to the floating member 24 afloat on the waste water 21.
  • the nozzle 3 is fixed in a state where the ejection hole 31 is oriented obliquely upward with respect to the water surface 23.
  • the spray direction R of the nozzle 3 is a direction oriented obliquely upward with respect to the water surface 23.
  • the nozzle 3 is fixed in a state where the tip end portion including the ejection hole 31 is exposed from the water.
  • an ejection angle ⁇ is specified.
  • the ejection angle ⁇ is an angle of the spray direction R with respect to the water surface 23, i.e., a horizontal direction.
  • the ejection angle ⁇ is, for example, 0° or more and 90° or less.
  • the ejection angle ⁇ of the nozzle 3 is preferably, for example, within a range of 0° or more and 60°or less.
  • the waste water evaporator 1 of the present embodiment is used, for example, for treatment of evaporating water in the waste water 21 stored in the waste water pond 2 in the final step of the ZLD.
  • the compressor 5 is actuated to eject high-pressure air into a space from the ejection hole 31 of the nozzle 3 installed in the waste water pond 2.
  • the jet stream 33 is generated.
  • its speed is higher than surrounding air, so the stream is put under negative pressure according to Bernoulli's theorem.
  • the waste water 21 is drawn into the jet stream 33 from the water surface 23.
  • the drawn waste water 21 is atomized to be caught in a flow of the jet stream 33 to become a mist 25.
  • the mist 25 is sprayed (discharged) along the discharging direction of the jet stream 33 from the water surface 23 near the ejection hole 31 of the nozzle 3. In this way, by the jet stream 33 being ejected from the nozzle 3, the waste water 21 is atomized from the water surface 23, and the mist 25 of the waste water 21 is discharged into the space.
  • the space into which the jet stream 33 and the mist 25 are discharged is, for example, the outdoors without a roof.
  • the space into which the jet stream 33 and the mist 25 are ejected preferably has sufficient room for air which has become damp by the evaporation of the mist 25 of the waste water 21 to spread.
  • the space into which the jet stream 33 and the mist 25 are ejected is preferably a space (open air) which is open such that new air with relatively low humidity is continuously supplied.
  • the space into which the jet stream 33 and the mist 25 are ejected may be in the atmospheric air, or, for example, a partitioned space provided inside a waste water treatment facility.
  • FIG. 2 is a picture photographing a state in which the waste water 21 is atomized and sprayed when performing a simulation indoors.
  • water is used as the waste water 21, and high-pressure air of, for example, 0.4 MPa or more is ejected from the nozzle 3.
  • high-pressure air of, for example, 0.4 MPa or more is ejected from the nozzle 3.
  • the waste water 21 stored in the waste water pond 2 is atomized from the water surface 23, and the fine mist 25 is formed.
  • the size (diameter) of a water droplet of the mist 25 is, for example, about a few ⁇ m to a few tens of ⁇ m.
  • the following effect can be brought about.
  • the jet stream 33 being ejected from the vicinity of the water surface 23 of the waste water 21, the waste water 21 is atomized from the water surface 23 to become the mist 25 and the mist 25 is discharged into the space.
  • the waste water 21 being atomized, the evaporation of water in the mist 25 is promoted.
  • the evaporation speed of the waste water 21 is increased.
  • the increase in the evaporation speed of the waste water 21 improves the treatment speed in the evaporative treatment of the waste water 21.
  • the configuration of the present embodiment it is possible to evaporate the waste water 21 with less energy consumption in comparison to a case where the waste water 21 is evaporated by heating.
  • energy efficiency in the evaporative treatment of the waste water 21 is improved, and energy savings and cost savings can be achieved.
  • the waste water 21 is directly atomized from the water surface 23 by the jet stream 33 ejected from the nozzle 3. Accordingly, there is no need to cause the waste water 21 to pass through a spray nozzle, etc. for atomizing the waste water 21, and the nozzle 3 does not have a flow path through which the waste water 21 passes. Since the nozzle 3 does not have a flow path through which the waste water 21 flows, clogging of solid impurities, solid matters, etc. in the waste water 21 can be prevented from occurring. Since the waste water 21 would not be clogged in the nozzle 3, there is no limit in the kinds of usable waste water 21, and it is possible to validly atomize the waste water 21 even if including solid matters and viscous fluids.
  • the waste water evaporator 1 of the present embodiment may be a small-type device installed inside a factory, etc., or can get very large in scale by providing a plurality of nozzles 3 in an outdoor solar pond, etc.
  • the ejection hole 31 of the nozzle 3 may be arranged on a lower side from the water surface 23 of the waste water 21, i.e., underwater.
  • a distance from the ejection hole 31 to the water surface 23 is preferably short, for example, preferably 1 cm or less.
  • FIG. 4 is a picture photographing a state in which the waste water 21 is atomized and sprayed when performing a simulation by arranging the ejection hole 31 of the nozzle 3 underwater of the waste water 21.
  • FIG. 4 it is understood that in a case where high-pressure air is jet ejected from beneath the water surface of the waste water 21 as well, the waste water 21 is atomized to form the fine mist 25.
  • the size (diameter) of a water droplet of the mist 25 is, for example, about a few mm.
  • the ejection hole 31 of the nozzle 3 may be on a lower side from the water surface 23 like this variation example, or may be on an upper side from the water surface 23 like the above descriptions of the first embodiment.
  • a position of the ejection hole 31 of the nozzle 3 is a position on an upper side from the water surface 23 in proximity to the water surface 23, or a position on a lower side from the water surface 23 in proximity to the water surface 23, i.e., approximately a position of a water surface 23.
  • FIG. 5 shows the waste water evaporator 1 in the present embodiment.
  • the ejection hole 31 of the nozzle 3 is fixed in a state of being oriented in an approximately horizontal direction in the present embodiment.
  • the spray direction R of the nozzle 3 is approximately in parallel with respect to the water surface 23.
  • the spray direction R of the nozzle 3 is approximately horizontal.
  • the ejection angle ⁇ is, for example, 0° to 20°.
  • the direction changing plate 27 is, for example, a member (a baffle) which is provided in a traveling direction of the jet stream 33 and the mist 25 and changes the discharging direction thereof to different directions.
  • the direction changing plate 27 is arranged in the flow path of the jet stream 33 ejected from the nozzle 3, i.e., an ejection region of the jet stream 33. Accordingly, the direction changing plate 27 is arranged on a side toward which the ejection hole 31 is oriented with respect to the nozzle 3.
  • the direction changing plate 27 is arranged near the water surface 23 in a state of, for example, inclining at 0° to 60° with respect to the water surface 23.
  • the direction changing plate 27 is oriented in a state of having an increased upward separation from the water surface 23 as the distance from the ejection hole 31 of the nozzle 3 increases.
  • the jet stream 33 ejected from the nozzle 3 is ejected approximately in parallel with respect to the water surface 23.
  • the jet stream 33 and the sprayed mist 25 hit the direction changing plate 27, and the discharging direction thereof is changed to a direction along the direction changing plate 27.
  • the jet stream 33 and the mist 25 are ejected in an obliquely upper direction with respect to the water surface 23.
  • FIG. 6 shows a state when performing a simulation by using the waste water evaporator 1 of the present embodiment.
  • the nozzle 3 is arranged so that the spray direction R thereof is approximately in parallel with the water surface 23 as well, by providing the direction changing plate 27 in the flow path of the jet stream 33 ejected from the nozzle 3, the waste water 21 stored in the waste water pond 2 is atomized from the water surface 23 to form the fine mist 25.
  • the nozzle 3 is arranged approximately in parallel with respect to the water surface 23.
  • the ejection hole 31 of the nozzle 3 can be maintained near the water surface 23 in a state where the nozzle 3 is not in contact with the water surface 23. Since the tip end portion of the nozzle 3 can be arranged in a state of not being in contact with the water surface 23, contamination by the waste water 21 can be prevented from being attached to the tip end portion and the ejection hole 31 of the nozzle 3.
  • a waste water evaporator of the third embodiment will be explained with reference to FIGS. 7 and 8.
  • the third embodiment is a modification of the configuration of the first embodiment as described below. In the following, parts identical to those of the first embodiment will be assigned identical symbols, and explanations thereof will be omitted.
  • FIG. 7 shows the waste water evaporator 1 in the present embodiment.
  • a tubular body 41 is attached to the nozzle 3.
  • the nozzle 3 with the tubular body 41 attached thereto is placed near the water surface 23 of the waste water pond 2.
  • the tubular body 41 is, for example, a resin-made cylindrical tube.
  • the tubular body 41 is mounted to cover the nozzle 3.
  • the ejection hole 31 of the nozzle 3 is arranged inside the tubular body 41.
  • the tubular body 41 includes an opening 42 at a tip end.
  • the opening 42 opens toward the spray direction R.
  • a distance L from the ejection hole 31 of the nozzle 3 to the opening 42 of the tubular body 41 is, for example, 2 cm to 3 cm.
  • the tubular body 41 includes water suction holes 44.
  • the water suction holes 44 are holes penetrating an outer peripheral surface of the tubular body 41.
  • the water suction holes 44 are formed in the tubular body 41 at a position in a proximal end side from a position in which the ejection hole 31 of the nozzle 3 is arranged.
  • the water suction holes 44 are water suction ports, and the waste water 21 flows into the tubular body 41 from the water suction holes 44 by gravity or venturi effect.
  • the waste water 21 flowing into the tubular body 41 the water surface 23 of the waste water 21 is also formed inside the tubular body 41.
  • the waste water 21 is atomized from the water surface 23 in the same manner as the first embodiment.
  • the tubular body 41 also includes an air suction hole 45.
  • the air suction hole 45 is provided in the tubular body 41 at a position in between where the ejection hole 31 of the nozzle 3 is arranged, up to the opening 42 of the tubular body 41.
  • the air suction hole 45 is a hole penetrating the outer peripheral surface of the tubular body 41. In a state where the water surface 23 is formed inside the tubular body 41, the air suction hole 45 is positioned on an upper side from the water surface 23.
  • the waste water 21 is atomized from the water surface 23 by the jet stream 33 inside the tubular body 41.
  • the mist 25 of the atomized waste water 21 is mixed with the jet stream 33 in a region from the ejection hole 31 of the nozzle 3 to the opening 42 of the tubular body 41, and a mixed fluid of the mist 25 and the jet stream 33 is sprayed from the opening 42 of the tubular body 41.
  • the air suction hole 45 functions as an air intake.
  • FIG. 8 shows a state when performing a simulation by using the waste water evaporator 1 of the present embodiment. As shown in FIG. 8, by ejecting high-pressure air in a state where the tubular body 41 is attached to the nozzle 3, the waste water 21 is sprayed as the fine mist 25.
  • the following effect can additionally be brought about.
  • the present embodiment by a region in which the jet stream 33 is mixed with the mist 25 of the waste water 21 being provided in a region where the jet stream 33 is ejected, it is possible to make the water droplets of the mist 25 being sprayed to be finer and to improve the quality of the mist 25 to be sprayed. By this, the evaporation of the mist 25 is further promoted, and the treatment speed and energy efficiency in the evaporative treatment of the waste water 21 is further improved.
  • a waste water evaporator of the fourth embodiment will be explained with reference to FIG. 9.
  • the fourth embodiment is a modification of the configuration of the first embodiment as described below. In the following, parts identical to those of the first embodiment will be assigned identical symbols, and explanations thereof will be omitted.
  • FIG. 9 shows the waste water evaporator 1 in the present embodiment.
  • the waste water evaporator 1 further includes an accumulation place 7.
  • the accumulation place 7 is adjacent to the waste water pond 2.
  • the accumulation place 7 is provided at an area ahead of the jet stream 33 ejected from the nozzle 3 with respect to the waste water pond 2.
  • the jet stream 33 is ejected toward the accumulation place 7 from the nozzle 3 provided in the waste water pond 2.
  • the waste water 21 is atomized and the mist 25 is sprayed. Water of the sprayed mist 25 evaporates by contacting outside air. By water in the mist 25 evaporating, contamination, etc.
  • the mist 25 of the waste water 21 is solidified, and falls to the accumulation place 7 as dry waste 29. Then, the dry waste 29 accumulates in the accumulation place 7.
  • the outside air is always supplied. Thus, it is possible to continuously evaporate the mist 25 of the waste water 21, irrespective of cooling of the outside air by the evaporation of the mist 25.
  • a wall 8 is provided to surround a periphery (upward of the periphery) of the accumulation place 7.
  • the following effect can additionally be brought about.
  • the present embodiment by providing the accumulation place 7 at an area to which the mist 25 of the waste water 21 is sprayed, it is possible to efficiently collect the dry waste 29 solidified by water in the mist 25 evaporating.
  • a waste water evaporator of the fifth embodiment will be explained with reference to FIG. 10.
  • the fifth embodiment is a modification of the configuration of the fourth embodiment as described below.
  • parts identical to those of the first embodiment will be assigned identical symbols, and explanations thereof will be omitted.
  • FIG. 10 shows the waste water evaporator 1 in the present embodiment.
  • the waste water evaporator 1 further includes an enclosure 9 arranged from the waste water pond 2 over the accumulation place 7.
  • the enclosure 9 is, for example, a tunnel-shaped (duct-shaped) line, and has the first opening 51 and the second opening 52.
  • the first opening 51 is arranged to face the ejection hole 31 of the nozzle 3 in the waste water pond 2. Accordingly, the first opening 51 is arranged in the flow path of the jet stream 33 ejected from the nozzle 3, i.e., the ejection region of the jet stream 33.
  • the second opening 52 is arranged in the accumulation place 7.
  • the jet stream 33 ejected from the nozzle 3 and the mist 25 of the sprayed waste water 21 pass through the first opening 51 of the enclosure 9 to flow into an internal portion of the enclosure 9. Then, the jet stream 33 and the mist 25 passes through the internal portion of the enclosure 9 to flow out from the second opening 52 to the accumulation place 7.
  • the first opening 51 becomes an inlet when the jet stream 33 and the mist 25 flow into the enclosure 9
  • the second opening 52 becomes an outlet when the jet stream 33 and the mist 25 flow out from the enclosure 9.
  • the jet stream 33 produces a flow of air heading from the first opening 51 toward the second opening 52.
  • the space is put under negative pressure by the jet stream 33.
  • the following effect can additionally be brought about.
  • a smooth air flow can be produced in the spraying region of the mist 25.
  • the air flow being generated in the spraying region of the mist 25, the evaporation of water in the mist 25 is facilitated.
  • the treatment speed and energy efficiency in the evaporative treatment of the waste water 21 is further improved.
  • FIG. 11 shows the waste water evaporator 1 in the present embodiment.
  • the waste water evaporator 1 further includes a controller (a control unit) 10.
  • the controller 10 is electrically connected to the compressor 5.
  • the controller 10 controls an ejection state of the jet stream 33 from the nozzle 3 by controlling a drive of the compressor 5.
  • the enclosure 9 is provided with the first measurement device (the first sensor) 53 and the second measurement device (the second sensor) 54.
  • the first measurement device 53 and the second measurement device 54 are, for example, a thermometer/hygrometer capable of measuring temperature and humidity.
  • Each of the first measurement device 53 and the second measurement device 54 is electrically connected to the controller 10.
  • the first measurement device 53 is provided near the first opening 51 of the enclosure 9.
  • the first measurement device 53 measures temperature and humidity of the outside air near the first opening 51 of the enclosure 9, and transmits a measurement result to the controller 10.
  • the second measurement device 54 is provided near the second opening 52 of the enclosure 9.
  • the second measurement device 54 measures temperature and humidity of the outside air near the second opening 52 of the enclosure 9, and transmits a measurement result to the controller 10.
  • the controller 10 obtains a measurement result in each of the first measurement device 53 and the second measurement device 54.
  • the controller 10 controls the drive of the compressor 5 based on at least one of the measurement result in the first measurement device 53 and the measurement result in the second measurement device 54. Then, the controller 10 controls the ejection state of the jet stream 33 from the nozzle 3 by controlling the drive of the compressor 5.
  • the controller 10 determines the weather based on temperature and humidity obtained from the first measurement device 53. In this case, on a day the humidity is low, i.e., a day the air is dry, the controller 10 increases the spray amount of the mist 25 of the waste water 21 by increasing the ejection amount of the jet stream 33 from the nozzle 3. In addition, on a day the humidity is high, i.e., a cloudy day, the controller 10 reduces the spray amount of the mist 25 of the waste water 21 by reducing the ejection amount of the jet stream 33 from the nozzle 3.
  • the controller 10 calculates a water vapor amount (absolute humidity) contained in the air flowing through the internal portion of the enclosure 9 and a saturated water vapor amount which can be contained in the air flowing through the internal portion of the enclosure 9, based on the measurement result in the first measurement device 53 and the measurement result in the second measurement device 54.
  • the controller 10 calculates the amount of water vapor that can be evaporated from the waste water 21 with respect to the air flowing through the internal portion of the enclosure 9, based on the calculation result. Then, based on the calculation result, the controller 10 controls the ejection amount of the jet stream 33 from the nozzle 3 and adjusts the amount of the waste water 21 to be atomized by the jet stream 33.
  • the controller 10 continuously obtains the measurement results in the second measurement device 54. Then, the controller 10 continuously calculates a relative humidity near the second opening 52 of the enclosure 9. The controller 10 stops spraying of the mist 25 of the waste water 21 by stopping the ejection of the jet stream 33 from the nozzle 3 when a calculated relative humidity is 100%.
  • the spray amount of the mist 25 of the waste water 21 is adjusted by the controller 10 according to a state of the outside air flowing through the internal portion of the enclosure 9. This makes it possible to spray the mist 25 of the waste water 21 only for the amount which can be evaporated into the outside air. By spraying the mist 25 of the waste water 21 only for the amount which can be evaporated, the mist 25 of the waste water 21 can be prevented from being sprayed excessively. This enables efficient spraying of the waste water 21. By promoting the evaporation effectively by using the outside air, the treatment speed and energy efficiency in the evaporative treatment of the waste water 21 can be further improved. Thus, energy savings and cost savings in the waste water treatment can be achieved.
  • waste water evaporators 1 of the first to sixth embodiments have been explained above, but as a matter of course it is also possible to combine the waste water evaporators 1 of the first to sixth embodiments appropriately to achieve one waste water evaporator 1.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
PCT/JP2018/003836 2017-08-30 2018-02-05 WASTEWATER EVAPORATOR WO2019043982A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019505541A JP6786705B2 (ja) 2017-08-30 2018-02-05 排水蒸発装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017165956 2017-08-30
JP2017-165956 2017-08-30

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Publication Number Publication Date
WO2019043982A1 true WO2019043982A1 (en) 2019-03-07

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220356078A1 (en) * 2019-08-12 2022-11-10 XDI Holdings, LLC Produced water evaporation system
US20230032611A1 (en) * 2021-08-02 2023-02-02 Hydrozonix, Llc Surface evaporation system
US20230150837A1 (en) * 2021-11-15 2023-05-18 Solar Multiple, Llc System and method for increasing evaporation for fluid bodies

Citations (3)

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Publication number Priority date Publication date Assignee Title
JPS60168583A (ja) * 1984-02-13 1985-09-02 Sekine:Kk 浄化水蒸散装置
JP2012032128A (ja) * 2010-08-03 2012-02-16 Yamamoto Giken Koki Kk 液体噴霧乾燥機
CN106395926A (zh) * 2016-09-22 2017-02-15 北京合众有益科技有限责任公司 一种气田采出水减量及无害化处理方法

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
JPS60168583A (ja) * 1984-02-13 1985-09-02 Sekine:Kk 浄化水蒸散装置
JP2012032128A (ja) * 2010-08-03 2012-02-16 Yamamoto Giken Koki Kk 液体噴霧乾燥機
CN106395926A (zh) * 2016-09-22 2017-02-15 北京合众有益科技有限责任公司 一种气田采出水减量及无害化处理方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220356078A1 (en) * 2019-08-12 2022-11-10 XDI Holdings, LLC Produced water evaporation system
US20230032611A1 (en) * 2021-08-02 2023-02-02 Hydrozonix, Llc Surface evaporation system
US11944919B2 (en) * 2021-08-02 2024-04-02 Hydrozonix, Llc Surface evaporation system
US20230150837A1 (en) * 2021-11-15 2023-05-18 Solar Multiple, Llc System and method for increasing evaporation for fluid bodies

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