WO2018092376A1 - Wastewater treatment device - Google Patents

Wastewater treatment device Download PDF

Info

Publication number
WO2018092376A1
WO2018092376A1 PCT/JP2017/030349 JP2017030349W WO2018092376A1 WO 2018092376 A1 WO2018092376 A1 WO 2018092376A1 JP 2017030349 W JP2017030349 W JP 2017030349W WO 2018092376 A1 WO2018092376 A1 WO 2018092376A1
Authority
WO
WIPO (PCT)
Prior art keywords
scrubber
wastewater
flocculant
wastewater treatment
waste water
Prior art date
Application number
PCT/JP2017/030349
Other languages
French (fr)
Japanese (ja)
Inventor
隆道 細野
藍 西山
正憲 東田
卓朗 中村
進士 仲尾
Original Assignee
川崎重工業株式会社
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 川崎重工業株式会社 filed Critical 川崎重工業株式会社
Priority to KR1020197015767A priority Critical patent/KR20190071807A/en
Priority to CN201780070980.4A priority patent/CN109937078A/en
Publication of WO2018092376A1 publication Critical patent/WO2018092376A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/28—Mechanical auxiliary equipment for acceleration of sedimentation, e.g. by vibrators or the like
    • B01D21/286—Means for gentle agitation for enhancing flocculation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B01D21/08—Settling tanks with single outlets for the separated liquid provided with flocculating compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5227—Processes for facilitating the dissolution of solid flocculants in water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters

Definitions

  • the present invention relates to a wastewater treatment apparatus.
  • EGR exhaust gas recirculation
  • the used cleaning liquid is discharged as scrubber waste water.
  • This scrubber wastewater contains a large amount of dust (solid particles such as soot), and it is necessary to separate and remove the dust from the scrubber wastewater in order to discharge the scrubber wastewater to the outside of the ship. Therefore, the EGR unit of the engine system for large ships needs a waste water treatment apparatus that separates and removes dust from the scrubber waste water.
  • the inventors of this application have proposed what provided the precipitation tank which performs a precipitation separation process as this waste water treatment apparatus (refer patent document 1).
  • the scrubber wastewater and flocculant are agitated upstream of the sedimentation tank to aggregate the dust, and then the scrubber wastewater containing the aggregated dust is pumped. It is conceivable to transport to a sedimentation tank. However, when the scrubber wastewater passes through the pump, the agglomerated dust can be crushed in the pump.
  • the present invention has been made in view of such circumstances, and the dust precipitated in the settling tank does not rise when stirring the scrubber waste water and the flocculant, and the dust aggregated by the flocculant is crushed.
  • An object of the present invention is to provide a wastewater treatment apparatus that does not cause any problems.
  • a wastewater treatment apparatus is a wastewater treatment apparatus that separates and removes dust from scrubber wastewater generated by washing engine exhaust, and a precipitation tank that precipitates the dust contained in the scrubber wastewater;
  • a flocculant charging unit for charging a flocculant into the scrubber waste water, a stirring unit for stirring the scrubber waste water and the flocculant, and a transport pump for pumping the scrubber waste water to the settling tank. Stirs the scrubber wastewater and the flocculant in a pressure-feed passage located between the transport pump and the settling tank.
  • the agitation unit agitates the scrubber wastewater and the flocculant in the pumping flow path located between the conveyance pump and the settling tank, the agglomerated dust particles by agitation of the scrubber wastewater and the flocculant pass the conveyance pump. There is nothing. Therefore, the agglomerated dust can be conveyed to the settling tank without being crushed, and the agglomerated dust can be precipitated in the settling tank.
  • the stirring unit is disposed in a stationary state in the pumping flow path, and has a diverting member that changes a flow direction of the scrubber waste water flowing in the pumping flow path. May be.
  • the direction of the scrubber wastewater flow can be changed by the deflecting member stationary in the pumping flow path, whereby the scrubber wastewater and the flocculant can be agitated. Therefore, power for stirring the scrubber waste water and the flocculant becomes unnecessary, and the structure of the stirring unit can be simplified. As a result, the wastewater treatment apparatus can be reduced in size.
  • FIG. 1 is an overall view of an engine system including a wastewater treatment apparatus.
  • FIG. 2 is an overall view of the wastewater treatment apparatus.
  • FIG. 3 is an overall view of a wastewater treatment apparatus according to another embodiment.
  • FIG. 1 is an overall view of the engine system 101.
  • the thick dashed line indicates the flow of exhaust gas and EGR gas (exhaust gas returning to the engine), and the thick solid line indicates the flow of fresh air and scavenging gas (fresh air plus EGR gas). ing.
  • the engine system 101 is an engine system for a large ship and is an engine 102 that is a two-stroke diesel engine, a scavenging flow passage 103 that supplies scavenging to the engine 102, and an exhaust that discharges exhaust discharged from the engine 102 to the outside.
  • the EGR unit 106 includes an EGR passage 10 that connects the scavenging passage 103 and the exhaust passage 104, a scrubber 20 that is provided in the EGR passage 10 and that cleans the EGR gas and discharges the used cleaning liquid as scrubber waste water. And an EGR blower 30 that is provided in the passage 10 and boosts the exhaust gas and adjusts the flow rate of the EGR gas.
  • the wastewater treatment apparatus 100 separates and removes dust from the scrubber wastewater discharged from the scrubber 20 described above, that is, the scrubber wastewater generated by washing the exhaust of the engine 102.
  • FIG. 2 is an overall view of the wastewater treatment apparatus 100.
  • the wastewater treatment apparatus 100 separates and removes dust from the scrubber wastewater, and then discharges the scrubber wastewater to the outside of the ship or returns it to the scrubber 20 for reuse.
  • the wastewater treatment apparatus 100 includes a sedimentation tank 41, a centrifuge 42, a flocculant charging unit 43, a stirring unit 44, and a transport pump 45.
  • the sedimentation tank 41 precipitates the dust contained in the scrubber wastewater, and performs a precipitation separation process for separating and removing the dust from the scrubber wastewater.
  • the sedimentation tank 41 of the present embodiment has a large number of cylindrical inclined tubes whose axis is inclined, and dust is deposited on the inclined tubes when waste water passes through the inclined tubes. The precipitated dust is collected at the bottom of the precipitation tank 41.
  • the centrifuge 42 takes in the scrubber wastewater that has been subjected to the precipitation separation process in the settling tank 41, and performs a centrifugal separation process that separates and removes dust from the scrubber wastewater by centrifugal force.
  • the sedimentation tank 41 is disposed upstream of the centrifuge 42 because the soot and dust having a relatively large particle size is separated and removed by the sedimentation tank 41 so as to be disposed downstream of the sedimentation tank 41. This is to reduce the burden of wastewater treatment of the separator 42.
  • the scrubber waste water that has been subjected to the centrifugal separation process by the centrifuge 42 is discharged out of the ship or returned to the scrubber 20 for reuse.
  • the wastewater treatment apparatus 100 is formed with a pressure feed passage 46 that is located between the transport pump 45 and the sedimentation tank 41 and through which the scrubber wastewater flows toward the sedimentation tank 41.
  • a pressure feed passage 46 that is located between the transport pump 45 and the sedimentation tank 41 and through which the scrubber wastewater flows toward the sedimentation tank 41.
  • tubular members 47 and 49 and a box-like member 48 connected to each other are provided between the transport pump 45 and the sedimentation tank 41, and the pressure feed flow is provided inside these members.
  • a path 46 is formed.
  • the pumping flow path 46 is filled with scrubber waste water.
  • the flocculant throwing unit 43 throws the flocculant into the scrubber wastewater flowing through the pressure feed passage 46. By adding a flocculant to the scrubber wastewater, the aggregation of the dust contained in the scrubber wastewater is promoted.
  • the kind of flocculant is not specifically limited, A well-known flocculant can be used.
  • the flocculant feeding unit 43 feeds the flocculant upstream from the stirring unit 44, but the flocculant may be fed near the stirring unit 44. Further, in order to stir the scrubber waste water and the flocculant with the transport pump 45, the flocculant input unit 43 may input the flocculant upstream of the transport pump 45.
  • the stirring unit 44 is a part for stirring the scrubber waste water and the flocculant.
  • the scrubber waste water and the flocculant are agitated in the pressure-feed passage 46 corresponding to the inside of the box-shaped member 48.
  • the stirring unit 44 includes a stirring plate 50 located inside the box-shaped member 48 and a rotation motor 51 that rotates the stirring plate 50. As the stirring plate 50 rotates, the scrubber waste water and the flocculant are stirred.
  • the conveyance pump 45 is a pump that pumps the scrubber wastewater to the sedimentation tank 41.
  • the transport pump 45 pressurizes the scrubber waste water upstream of the stirring unit 44.
  • the pressure applied to the scrubber wastewater from the transfer pump 45 is converted into kinetic energy, and the scrubber wastewater flows to the settling tank 41.
  • the scrubber wastewater since the scrubber wastewater continuously flows in the pressure feed passage 46, the scrubber wastewater can be transported to the sedimentation tank 41 only by the transport pump 45.
  • the agitation of the dust contained in the scrubber wastewater is promoted by agitating the scrubber wastewater and the flocculant in the agitation unit 44, and the sedimentation treatment is efficiently performed in the precipitation tank 41. It can be performed.
  • the dust that has settled in the precipitation tank 41 does not rise by this agitation.
  • the agitation unit 44 since the agitation unit 44 agitates the scrubber waste water and the flocculant in the pressure-feed channel 46, the dust aggregated by the flocculant does not pass through the conveyance pump 45 and is crushed by the conveyance pump 45. It never happens.
  • the wastewater treatment apparatus 200 according to the present embodiment is different from the wastewater treatment apparatus 100 according to the first embodiment in the configuration of the pumping flow path 46 and the stirring unit 44, but the wastewater treatment apparatus 100 according to the first embodiment is otherwise. And basically the same.
  • FIG. 3 is an overall view of the wastewater treatment apparatus 200 according to the present embodiment.
  • the scrubber wastewater is pumped to the sedimentation tank 41 by the transport pump 45 as in the case of the first embodiment.
  • a pressure-feed passage 46 is formed inside the tubular members 47, 49, 52.
  • the stirrer 44 is a so-called static mixer that is disposed in a stationary state in the pressure-feeding channel 46 and changes the direction of the scrubber waste water flowing in the pressure-feeding channel 46. 53.
  • the diverting member 53 has a plurality of diverting plates 54 having different shapes connected along the axial direction of the tubular member 52.
  • the scrubber wastewater flowing in the pressure-feed channel 46 collides with the direction change plates 54, so that the flow direction is changed in a complicated manner, and the scrubber wastewater and the flocculant are agitated.
  • the wastewater treatment apparatus 200 Since the wastewater treatment apparatus 200 according to the present embodiment is configured as described above, power for stirring the scrubber wastewater and the flocculant becomes unnecessary, and the structure of the stirring unit 44 can be simplified. . As a result, the wastewater treatment apparatus 200 can be reduced in size.
  • the wastewater treatment apparatuses 100 and 200 treat the scrubber wastewater discharged from the scrubber 20 of the EGR unit 106 .
  • the wastewater treatment apparatuses 100 and 200 are from the SOx scrubber that treats the entire exhaust gas.
  • the scrubber waste water discharged may be treated.
  • the SOx scrubber mainly separates and removes SOx from the exhaust gas, but the scrubber wastewater discharged from the SOx scrubber also contains soot and dust.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Treating Waste Gases (AREA)

Abstract

A wastewater treatment device according to an embodiment of the present invention has: a sedimentation tank for sedimentation of particulate matter included in scrubber wastewater; a flocculant introducing unit for introducing a flocculant into the scrubber wastewater; a stirring unit for stirring the scrubber wastewater and the flocculant; and a transport pump for pressure feeding the scrubber wastewater to the sedimentation tank. The stirring unit stirs the scrubber wastewater and the flocculent within a pressure feed flow path positioned between the transport pump and the sedimentation tank.

Description

廃水処理装置Waste water treatment equipment
　本発明は、廃水処理装置に関する。 The present invention relates to a wastewater treatment apparatus.
　エンジンから排出される窒素酸化物（ＮＯｘ）の量を低減する技術として、排気をエンジンに戻す排気再循環（ＥＧＲ； Exhaust Gas Recirculation）技術がある。大型船舶用のエンジンにも、このＥＧＲ技術を適用することができる。ただし、大型船舶用のエンジンは、燃料として重油を使用していることから、排気にはカーボンなどの浮遊粒子状物質が多量に含まれる。そのため、大型船舶用のエンジンシステムのＥＧＲユニットは、エンジンに戻す排気（ＥＧＲガス）を洗浄液で洗浄するスクラバーを備えている。 As a technology for reducing the amount of nitrogen oxide (NOx) discharged from the engine, there is an exhaust gas recirculation (EGR) technology that returns exhaust gas to the engine. This EGR technology can also be applied to engines for large ships. However, because large marine engines use heavy oil as fuel, the exhaust contains a large amount of suspended particulate matter such as carbon. Therefore, the EGR unit of the engine system for large ships includes a scrubber that cleans exhaust gas (EGR gas) returned to the engine with a cleaning liquid.
　スクラバーでは、使用した洗浄液をスクラバー廃水として排出する。このスクラバー廃水にはばいじん（すすなどの固体粒子）が多く含まれており、スクラバー廃水を船外に排出するにはスクラバー廃水からばいじんを分離除去する必要がある。そのため、大型船舶用のエンジンシステムのＥＧＲユニットは、スクラバー廃水からばいじんを分離除去する廃水処理装置も必要となる。本願の発明者らは、この廃水処理装置として、沈殿分離処理を行う沈殿槽を備えたものを提案している（特許文献１参照）。 In the scrubber, the used cleaning liquid is discharged as scrubber waste water. This scrubber wastewater contains a large amount of dust (solid particles such as soot), and it is necessary to separate and remove the dust from the scrubber wastewater in order to discharge the scrubber wastewater to the outside of the ship. Therefore, the EGR unit of the engine system for large ships needs a waste water treatment apparatus that separates and removes dust from the scrubber waste water. The inventors of this application have proposed what provided the precipitation tank which performs a precipitation separation process as this waste water treatment apparatus (refer patent document 1).
特開２０１３－２５５８７６号公報JP 2013-255876 A
　ところで、スクラバー廃水に含まれるばいじんを沈殿槽で沈殿させるには、スクラバー廃水に凝集剤を投入するのが有効である。ばいじんは粒径が大きければ沈殿しやすく、スクラバー廃水に凝集剤を投入することにより、スクラバー廃水に含まれるばいじんの凝集を促進させることができる。ただし、ばいじんを効率よく凝集させるには、スクラバー廃水と凝集剤を十分に攪拌する必要がある。仮に、この攪拌を沈殿槽で行うと、沈殿槽の底に沈殿したばいじんが舞い上がり、舞い上がったばいじんは再びスクラバー廃水に取り込まれてしまうおそれがある。 By the way, it is effective to add a flocculant to the scrubber wastewater in order to precipitate the dust contained in the scrubber wastewater in the settling tank. Soot is likely to settle if the particle size is large, and by adding a flocculant to the scrubber wastewater, the aggregation of the dust contained in the scrubber wastewater can be promoted. However, to efficiently agglomerate the dust, it is necessary to sufficiently stir the scrubber waste water and the aggregating agent. If this agitation is performed in a sedimentation tank, the dust that has settled at the bottom of the sedimentation tank rises, and the soot that dusts up may be taken into the scrubber wastewater again.
　一方、沈殿槽で沈殿したばいじんが舞い上がらないようにするには、沈殿槽よりも上流でスクラバー廃水と凝集剤を攪拌してばいじんを凝集させた後、凝集したばいじんを含んだスクラバー廃水をポンプで沈殿槽に搬送することが考えられる。ところが、スクラバー廃水がポンプを通過する際、凝集したばいじんがポンプ内で破砕されてしまうおそれがある。 On the other hand, in order to prevent soot that has settled in the sedimentation tank, the scrubber wastewater and flocculant are agitated upstream of the sedimentation tank to aggregate the dust, and then the scrubber wastewater containing the aggregated dust is pumped. It is conceivable to transport to a sedimentation tank. However, when the scrubber wastewater passes through the pump, the agglomerated dust can be crushed in the pump.
　本発明は、このような事情に鑑みてなされたものであって、スクラバー廃水と凝集剤を攪拌する際に沈殿槽で沈殿したばいじんが舞い上がることなく、かつ、凝集剤によって凝集したばいじんが破砕されることのない廃水処理装置を提供することを目的とする。 The present invention has been made in view of such circumstances, and the dust precipitated in the settling tank does not rise when stirring the scrubber waste water and the flocculant, and the dust aggregated by the flocculant is crushed. An object of the present invention is to provide a wastewater treatment apparatus that does not cause any problems.
　本発明の一態様に係る廃水処理装置は、エンジンの排気を洗浄することにより生じるスクラバー廃水からばいじんを分離除去する廃水処理装置であって、前記スクラバー廃水に含まれるばいじんを沈殿させる沈殿槽と、前記スクラバー廃水に凝集剤を投入する凝集剤投入部と、前記スクラバー廃水と前記凝集剤を攪拌する攪拌部と、前記スクラバー廃水を前記沈殿槽まで圧送する搬送ポンプと、を有し、前記攪拌部は、前記搬送ポンプと前記沈殿槽の間に位置する圧送流路内で前記スクラバー廃水と前記凝集剤を攪拌する。 A wastewater treatment apparatus according to an aspect of the present invention is a wastewater treatment apparatus that separates and removes dust from scrubber wastewater generated by washing engine exhaust, and a precipitation tank that precipitates the dust contained in the scrubber wastewater; A flocculant charging unit for charging a flocculant into the scrubber waste water, a stirring unit for stirring the scrubber waste water and the flocculant, and a transport pump for pumping the scrubber waste water to the settling tank. Stirs the scrubber wastewater and the flocculant in a pressure-feed passage located between the transport pump and the settling tank.
　この構成によれば、沈殿槽よりも上流の圧送流路内でスクラバー廃水と凝集剤が攪拌されるため、沈殿槽で沈殿したばいじんがこの攪拌によって舞い上がることはない。また、攪拌部は、搬送ポンプと沈殿槽の間に位置する圧送流路内でスクラバー廃水と凝集剤を攪拌するため、スクラバー廃水と凝集剤を攪拌することによって凝集したばいじんは搬送ポンプを通過することはない。そのため、凝集したばいじんは破砕されることなく沈殿槽に搬送され、凝集したばいじんを沈殿槽で沈殿させることができる。 According to this configuration, since the scrubber waste water and the flocculant are stirred in the pumping flow channel upstream from the settling tank, the dust that has settled in the settling tank does not rise by this stirring. In addition, since the agitation unit agitates the scrubber wastewater and the flocculant in the pumping flow path located between the conveyance pump and the settling tank, the agglomerated dust particles by agitation of the scrubber wastewater and the flocculant pass the conveyance pump. There is nothing. Therefore, the agglomerated dust can be conveyed to the settling tank without being crushed, and the agglomerated dust can be precipitated in the settling tank.
　また、上記の廃水処理装置において、前記攪拌部は、前記圧送流路内で静止した状態で配置され、前記圧送流路内を流れる前記スクラバー廃水の流れの方向を変える変向部材を有していてもよい。 Further, in the waste water treatment apparatus, the stirring unit is disposed in a stationary state in the pumping flow path, and has a diverting member that changes a flow direction of the scrubber waste water flowing in the pumping flow path. May be.
　この構成によれば、圧送流路内で静止した変向部材によってスクラバー廃水の流れの方向を変え、これによってスクラバー廃水と凝集剤を攪拌することができる。そのため、スクラバー廃水と凝集剤を攪拌するための動力が不要になるとともに、攪拌部の構造を簡略化することができる。その結果、廃水処理装置を小型化することができる。 According to this configuration, the direction of the scrubber wastewater flow can be changed by the deflecting member stationary in the pumping flow path, whereby the scrubber wastewater and the flocculant can be agitated. Therefore, power for stirring the scrubber waste water and the flocculant becomes unnecessary, and the structure of the stirring unit can be simplified. As a result, the wastewater treatment apparatus can be reduced in size.
　前述したとおり、上記の廃水処理装置によれば、スクラバー廃水と凝集剤を攪拌する際に沈殿槽で沈殿したばいじんが舞い上がることなく、かつ、凝集剤によって凝集したばいじんが破砕されることもない。 As described above, according to the above-described wastewater treatment apparatus, when the scrubber wastewater and the flocculant are agitated, the dust precipitated in the settling tank does not rise, and the dust aggregated by the flocculant is not crushed.
図１は、廃水処理装置を含むエンジンシステムの全体図である。FIG. 1 is an overall view of an engine system including a wastewater treatment apparatus. 図２は、廃水処理装置の全体図である。FIG. 2 is an overall view of the wastewater treatment apparatus. 図３は、他の実施形態に係る廃水処理装置の全体図である。FIG. 3 is an overall view of a wastewater treatment apparatus according to another embodiment.
　（第１実施形態）
　以下、本発明の第１実施形態に係る廃水処理装置１００について説明する。 (First embodiment)
Hereinafter, the wastewater treatment apparatus 100 according to the first embodiment of the present invention will be described.
　＜エンジンシステム＞
　まず、廃水処理装置１００を備えたエンジンシステム１０１について説明する。図１は、エンジンシステム１０１の全体図である。図１において、太く描いた破線は排気及びＥＧＲガス（エンジンに戻す排気）の流れを示しており、太く描いた実線は新気及び掃気（新気にＥＧＲガスを加えたもの）の流れを示している。 <Engine system>
First, the engine system 101 provided with the waste water treatment apparatus 100 will be described. FIG. 1 is an overall view of the engine system 101. In FIG. 1, the thick dashed line indicates the flow of exhaust gas and EGR gas (exhaust gas returning to the engine), and the thick solid line indicates the flow of fresh air and scavenging gas (fresh air plus EGR gas). ing.
　エンジンシステム１０１は、大型船舶用のエンジンシステムであって２ストロークディーゼルエンジンであるエンジン１０２と、エンジン１０２に掃気を供給する掃気流路１０３と、エンジン１０２から排出された排気を外部に放出する排気流路１０４と、排気のエネルギにより駆動し新気を昇圧する過給機１０５と、排気流路１０４から排気を抽出して掃気流路１０３に供給するＥＧＲユニット１０６と、後述するスクラバー廃水を処理する廃水処理装置１００と、を備えている。 The engine system 101 is an engine system for a large ship and is an engine 102 that is a two-stroke diesel engine, a scavenging flow passage 103 that supplies scavenging to the engine 102, and an exhaust that discharges exhaust discharged from the engine 102 to the outside. A flow path 104, a supercharger 105 that is driven by the energy of exhaust gas to boost the fresh air, an EGR unit 106 that extracts exhaust gas from the exhaust flow path 104 and supplies it to the scavenging flow path 103, and a scrubber wastewater described later And a wastewater treatment apparatus 100 for performing
　ＥＧＲユニット１０６は、掃気流路１０３と排気流路１０４をつなぐＥＧＲ流路１０と、ＥＧＲ流路１０に設けられＥＧＲガスを洗浄し、使用した洗浄液をスクラバー廃水として排出するスクラバー２０と、ＥＧＲ流路１０に設けられ排気を昇圧するとともにＥＧＲガスの流量を調整するＥＧＲブロワ３０と、を有している。廃水処理装置１００は、上述したスクラバー２０から排出されるスクラバー廃水、すなわちエンジン１０２の排気を洗浄することにより生じるスクラバー廃水からばいじんを分離除去する。 The EGR unit 106 includes an EGR passage 10 that connects the scavenging passage 103 and the exhaust passage 104, a scrubber 20 that is provided in the EGR passage 10 and that cleans the EGR gas and discharges the used cleaning liquid as scrubber waste water. And an EGR blower 30 that is provided in the passage 10 and boosts the exhaust gas and adjusts the flow rate of the EGR gas. The wastewater treatment apparatus 100 separates and removes dust from the scrubber wastewater discharged from the scrubber 20 described above, that is, the scrubber wastewater generated by washing the exhaust of the engine 102.
　＜廃水処理装置＞
　続いて、廃水処理装置１００をより詳しく説明する。図２は、廃水処理装置１００の全体図である。廃水処理装置１００は、スクラバー廃水からばいじんを分離除去した後、当該スクラバー廃水を船外に放出するか、スクラバー２０に返送して再利用する。図１及び図２に示すように、廃水処理装置１００は、沈殿槽４１と、遠心分離機４２と、凝集剤投入部４３と、攪拌部４４と、搬送ポンプ４５と、を有している。 <Waste water treatment equipment>
Subsequently, the wastewater treatment apparatus 100 will be described in more detail. FIG. 2 is an overall view of the wastewater treatment apparatus 100. The wastewater treatment apparatus 100 separates and removes dust from the scrubber wastewater, and then discharges the scrubber wastewater to the outside of the ship or returns it to the scrubber 20 for reuse. As shown in FIGS. 1 and 2, the wastewater treatment apparatus 100 includes a sedimentation tank 41, a centrifuge 42, a flocculant charging unit 43, a stirring unit 44, and a transport pump 45.
　沈殿槽４１は、スクラバー廃水に含まれるばいじんを沈殿させ、スクラバー廃水からばいじんを分離除去する沈殿分離処理を行う。本実施形態の沈殿槽４１は、筒状で軸心が傾斜した傾斜管を多数有しており、廃水がこの傾斜管を通過する際に傾斜管にばいじんが沈殿する。なお、沈殿したばいじんは沈殿槽４１の底部に溜まる。 The sedimentation tank 41 precipitates the dust contained in the scrubber wastewater, and performs a precipitation separation process for separating and removing the dust from the scrubber wastewater. The sedimentation tank 41 of the present embodiment has a large number of cylindrical inclined tubes whose axis is inclined, and dust is deposited on the inclined tubes when waste water passes through the inclined tubes. The precipitated dust is collected at the bottom of the precipitation tank 41.
　遠心分離機４２は、沈殿槽４１で沈殿分離処理が行われたスクラバー廃水を取り込んで、遠心力によってスクラバー廃水からばいじんを分離除去する遠心分離処理を行う。なお、遠心分離機４２よりも上流に沈殿槽４１を配置しているのは、粒径が比較的大きいばいじんを沈殿槽４１で分離除去することにより、沈殿槽４１よりも下流に配置された遠心分離機４２の廃水処理の負担を低減するためである。遠心分離機４２で遠心分離処理が行われたスクラバー廃水は船外へ放出されるか、スクラバー２０に返送されて再利用される。 The centrifuge 42 takes in the scrubber wastewater that has been subjected to the precipitation separation process in the settling tank 41, and performs a centrifugal separation process that separates and removes dust from the scrubber wastewater by centrifugal force. The sedimentation tank 41 is disposed upstream of the centrifuge 42 because the soot and dust having a relatively large particle size is separated and removed by the sedimentation tank 41 so as to be disposed downstream of the sedimentation tank 41. This is to reduce the burden of wastewater treatment of the separator 42. The scrubber waste water that has been subjected to the centrifugal separation process by the centrifuge 42 is discharged out of the ship or returned to the scrubber 20 for reuse.
　ここで、本実施形態に係る廃水処理装置１００には、搬送ポンプ４５と沈殿槽４１の間に位置し、スクラバー廃水が沈殿槽４１に向かって流れる圧送流路４６が形成されている。具体的には、図２に示すように、搬送ポンプ４５と沈殿槽４１の間には、互いに連結された管状部材４７、４９及び箱状部材４８が設けられており、これらの内部に圧送流路４６が形成されている。また、圧送流路４６はスクラバー廃水で満たされている。 Here, the wastewater treatment apparatus 100 according to the present embodiment is formed with a pressure feed passage 46 that is located between the transport pump 45 and the sedimentation tank 41 and through which the scrubber wastewater flows toward the sedimentation tank 41. Specifically, as shown in FIG. 2, tubular members 47 and 49 and a box-like member 48 connected to each other are provided between the transport pump 45 and the sedimentation tank 41, and the pressure feed flow is provided inside these members. A path 46 is formed. Moreover, the pumping flow path 46 is filled with scrubber waste water.
　凝集剤投入部４３は、圧送流路４６を流れるスクラバー廃水に凝集剤を投入する。スクラバー廃水に凝集剤を投入することにより、スクラバー廃水に含まれるばいじんの凝集が促進される。凝集剤の種類は特に限定されず、公知の凝集剤を使用することができる。なお、本実施形態の凝集剤投入部４３は、攪拌部４４よりも上流に凝集剤を投入しているが、攪拌部４４付近に凝集剤を投入してもよい。また、搬送ポンプ４５でスクラバー廃水と凝集剤を撹拌させるために、凝集剤投入部４３は搬送ポンプ４５よりも上流に凝集剤を投入してもよい。 The flocculant throwing unit 43 throws the flocculant into the scrubber wastewater flowing through the pressure feed passage 46. By adding a flocculant to the scrubber wastewater, the aggregation of the dust contained in the scrubber wastewater is promoted. The kind of flocculant is not specifically limited, A well-known flocculant can be used. In the present embodiment, the flocculant feeding unit 43 feeds the flocculant upstream from the stirring unit 44, but the flocculant may be fed near the stirring unit 44. Further, in order to stir the scrubber waste water and the flocculant with the transport pump 45, the flocculant input unit 43 may input the flocculant upstream of the transport pump 45.
　攪拌部４４は、スクラバー廃水と凝集剤を攪拌する部分である。本実施形態では、箱状部材４８の内部にあたる圧送流路４６内でスクラバー廃水と凝集剤を攪拌する。攪拌部４４は、箱状部材４８の内部に位置する攪拌板５０と、攪拌板５０を回転させる回転モータ５１を有している。攪拌板５０が回転することにより、スクラバー廃水と凝集剤が攪拌される。 The stirring unit 44 is a part for stirring the scrubber waste water and the flocculant. In the present embodiment, the scrubber waste water and the flocculant are agitated in the pressure-feed passage 46 corresponding to the inside of the box-shaped member 48. The stirring unit 44 includes a stirring plate 50 located inside the box-shaped member 48 and a rotation motor 51 that rotates the stirring plate 50. As the stirring plate 50 rotates, the scrubber waste water and the flocculant are stirred.
　搬送ポンプ４５は、スクラバー廃水を沈殿槽４１まで圧送するポンプである。搬送ポンプ４５は、攪拌部４４よりも上流においてスクラバー廃水を加圧する。搬送ポンプ４５からスクラバー廃水に加えられた圧力は運動エネルギに変換され、スクラバー廃水は沈殿槽４１まで流れる。本実施形態では、圧送流路４６でスクラバー廃水が連続的に流れているため、搬送ポンプ４５のみでスクラバー廃水を沈殿槽４１まで搬送することができる。 The conveyance pump 45 is a pump that pumps the scrubber wastewater to the sedimentation tank 41. The transport pump 45 pressurizes the scrubber waste water upstream of the stirring unit 44. The pressure applied to the scrubber wastewater from the transfer pump 45 is converted into kinetic energy, and the scrubber wastewater flows to the settling tank 41. In the present embodiment, since the scrubber wastewater continuously flows in the pressure feed passage 46, the scrubber wastewater can be transported to the sedimentation tank 41 only by the transport pump 45.
　以上が本実施形態に係る廃水処理装置１００の構成である。上記のとおり、本実施形態に係る廃水処理装置１００では、攪拌部４４でスクラバー廃水と凝集剤を攪拌することでスクラバー廃水に含まれるばいじんの凝集が促進され、沈殿槽４１において効率よく沈殿分離処理を行うことができる。 The above is the configuration of the wastewater treatment apparatus 100 according to the present embodiment. As described above, in the wastewater treatment apparatus 100 according to the present embodiment, the agitation of the dust contained in the scrubber wastewater is promoted by agitating the scrubber wastewater and the flocculant in the agitation unit 44, and the sedimentation treatment is efficiently performed in the precipitation tank 41. It can be performed.
　さらに、本実施形態では、圧送流路４６内でスクラバー廃水と凝集剤が攪拌されるため、沈殿槽４１で沈殿したばいじんがこの攪拌によって舞い上がることはない。また、本実施形態では、攪拌部４４が圧送流路４６内でスクラバー廃水と凝集剤を攪拌するため、凝集剤によって凝集したばいじんが搬送ポンプ４５を通過することはなく、搬送ポンプ４５によって破砕されることもない。 Furthermore, in this embodiment, since the scrubber waste water and the flocculant are agitated in the pumping flow path 46, the dust that has settled in the precipitation tank 41 does not rise by this agitation. In the present embodiment, since the agitation unit 44 agitates the scrubber waste water and the flocculant in the pressure-feed channel 46, the dust aggregated by the flocculant does not pass through the conveyance pump 45 and is crushed by the conveyance pump 45. It never happens.
　（第２実施形態）
　次に、第２実施形態に係る廃水処理装置２００について説明する。本実施形態に係る廃水処理装置２００は、圧送流路４６及び攪拌部４４の構成が第１実施形態に係る廃水処理装置１００と異なるが、それ以外については第１実施形態に係る廃水処理装置１００と基本的に同じである。 (Second Embodiment)
Next, the wastewater treatment apparatus 200 according to the second embodiment will be described. The wastewater treatment apparatus 200 according to the present embodiment is different from the wastewater treatment apparatus 100 according to the first embodiment in the configuration of the pumping flow path 46 and the stirring unit 44, but the wastewater treatment apparatus 100 according to the first embodiment is otherwise. And basically the same.
　図３は、本実施形態に係る廃水処理装置２００の全体図である。本実施形態では搬送ポンプ４５によってスクラバー廃水が沈殿槽４１まで圧送される点は第１実施形態の場合と同様である。ただし、図３に示すように、本実施形態では管状部材４７、４９、５２の内部に圧送流路４６形成されている。 FIG. 3 is an overall view of the wastewater treatment apparatus 200 according to the present embodiment. In the present embodiment, the scrubber wastewater is pumped to the sedimentation tank 41 by the transport pump 45 as in the case of the first embodiment. However, as shown in FIG. 3, in the present embodiment, a pressure-feed passage 46 is formed inside the tubular members 47, 49, 52.
　そして、本実施形態の攪拌部４４は、いわゆるスタッティクミキサーであって、圧送流路４６内で静止した状態で配置され、圧送流路４６内を流れるスクラバー廃水の流れの方向を変える変向部材５３を有している。変向部材５３は、管状部材５２の軸方向に沿って連結された、形状の異なる複数の変向板５４を有している。圧送流路４６内を流れるスクラバー廃水がこれらの変向板５４に衝突することで、流れの方向が複雑に変化し、スクラバー廃水と凝集剤が攪拌される。 The stirrer 44 according to the present embodiment is a so-called static mixer that is disposed in a stationary state in the pressure-feeding channel 46 and changes the direction of the scrubber waste water flowing in the pressure-feeding channel 46. 53. The diverting member 53 has a plurality of diverting plates 54 having different shapes connected along the axial direction of the tubular member 52. The scrubber wastewater flowing in the pressure-feed channel 46 collides with the direction change plates 54, so that the flow direction is changed in a complicated manner, and the scrubber wastewater and the flocculant are agitated.
　本実施形態に係る廃水処理装置２００は、上記のように構成されているため、スクラバー廃水と凝集剤を攪拌するための動力が不要になるとともに、攪拌部４４の構造を簡略化することができる。その結果、廃水処理装置２００を小型化することができる。 Since the wastewater treatment apparatus 200 according to the present embodiment is configured as described above, power for stirring the scrubber wastewater and the flocculant becomes unnecessary, and the structure of the stirring unit 44 can be simplified. . As a result, the wastewater treatment apparatus 200 can be reduced in size.
　なお、以上では、廃水処理装置１００、２００が、ＥＧＲユニット１０６のスクラバー２０から排出されるスクラバー廃水を処理する場合について説明したが、廃水処理装置１００、２００は、排気を全量処理するＳＯｘスクラバーから排出されるスクラバー廃水を処理するものであってもよい。ＳＯｘスクラバーは主に排気からＳＯｘを分離除去するものであるが、ＳＯｘスクラバーから排出されるスクラバー廃水にもばいじんが含まれている。 In the above, the case where the wastewater treatment apparatuses 100 and 200 treat the scrubber wastewater discharged from the scrubber 20 of the EGR unit 106 has been described. However, the wastewater treatment apparatuses 100 and 200 are from the SOx scrubber that treats the entire exhaust gas. The scrubber waste water discharged may be treated. The SOx scrubber mainly separates and removes SOx from the exhaust gas, but the scrubber wastewater discharged from the SOx scrubber also contains soot and dust.
４１　沈殿槽
４３　凝集剤投入部
４４　攪拌部
４５　搬送ポンプ
４６　圧送流路
５３　変向部材
１００　廃水処理装置
１０２　エンジン
２００　廃水処理装置
  41 Precipitation tank 43 Coagulant charging unit 44 Stirring unit 45 Conveying pump 46 Pumping flow path 53 Turning member 100 Wastewater treatment device 102 Engine 200 Wastewater treatment device

Claims (2)

  1. 　エンジンの排気を洗浄することにより生じるスクラバー廃水からばいじんを分離除去する廃水処理装置であって、
    　前記スクラバー廃水に含まれるばいじんを沈殿させる沈殿槽と、
    　前記スクラバー廃水に凝集剤を投入する凝集剤投入部と、
    　前記スクラバー廃水と前記凝集剤を攪拌する攪拌部と、
    　前記スクラバー廃水を前記沈殿槽まで圧送する搬送ポンプと、を有し、
    　前記攪拌部は、前記搬送ポンプと前記沈殿槽の間に位置する圧送流路内で前記スクラバー廃水と前記凝集剤を攪拌する、廃水処理装置。     A wastewater treatment device that separates and removes dust from scrubber wastewater generated by cleaning engine exhaust,
    A settling tank for precipitating the dust contained in the scrubber waste water;
    A flocculant charging unit for charging the flocculant into the scrubber waste water;
    A stirring section for stirring the scrubber wastewater and the flocculant;
    A transport pump for pumping the scrubber wastewater to the settling tank,
    The stirrer is a wastewater treatment apparatus that stirs the scrubber wastewater and the flocculant in a pressure-feed passage located between the transport pump and the settling tank.
  2. 　前記攪拌部は、前記圧送流路内で静止した状態で配置され、前記圧送流路内を流れる前記スクラバー廃水の流れの方向を変える変向部材を有する、請求項１に記載の廃水処理装置。
          2. The wastewater treatment apparatus according to claim 1, wherein the agitation unit is disposed in a stationary state in the pumping flow path, and includes a diverting member that changes a flow direction of the scrubber wastewater flowing in the pumping flow path.
PCT/JP2017/030349 2016-11-18 2017-08-24 Wastewater treatment device WO2018092376A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020197015767A KR20190071807A (en) 2016-11-18 2017-08-24 Wastewater treatment device
CN201780070980.4A CN109937078A (en) 2016-11-18 2017-08-24 Wastewater treatment equipment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016224856A JP6378739B2 (en) 2016-11-18 2016-11-18 Engine system for large ships
JP2016-224856 2016-11-18

Publications (1)

Publication Number Publication Date
WO2018092376A1 true WO2018092376A1 (en) 2018-05-24

Family

ID=62145429

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/030349 WO2018092376A1 (en) 2016-11-18 2017-08-24 Wastewater treatment device

Country Status (4)

Country Link
JP (1) JP6378739B2 (en)
KR (1) KR20190071807A (en)
CN (1) CN109937078A (en)
WO (1) WO2018092376A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5128263A (en) * 1974-09-03 1976-03-10 Kajima Doro Kk
JPH0686986A (en) * 1992-03-30 1994-03-29 Ube Ind Ltd Method for treating waste liquid and device using the method
JPH07204657A (en) * 1994-01-13 1995-08-08 Seiwa Kiko Kk Portable turbid water treatment device
US20020113023A1 (en) * 2000-07-07 2002-08-22 Krulik Gerald A. System and method for simultaneous removal of arsenic and fluoride from aqueous solutions
JP2013256880A (en) * 2012-06-11 2013-12-26 Kawasaki Heavy Ind Ltd Waste water treating system, exhaust recirculating unit, engine system, and ship

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07275900A (en) * 1994-04-07 1995-10-24 Yoshio Gomi Method for treating wastewater containing organic substance
JP2002292363A (en) * 2001-01-26 2002-10-08 Nkk Corp Method for treating dioxins in wastewater from waste disposer and disposer therefor
JP2003120440A (en) * 2001-10-19 2003-04-23 Yanmar Co Ltd Gas engine
JP2003205293A (en) * 2002-01-15 2003-07-22 Kansai Electric Power Co Inc:The Method for treating heavy metal-containing waste water
JP2007051555A (en) * 2005-08-16 2007-03-01 Mitsui Eng & Shipbuild Co Ltd Exhaust emission control device of diesel engine
JP4811728B2 (en) * 2006-11-02 2011-11-09 清水建設株式会社 Slurry dewatering method and apparatus, and suspension processing system
CN101279805A (en) * 2007-04-03 2008-10-08 天津工业大学 Technological process and apparatus for drinking water treatment by film method
JP5006167B2 (en) * 2007-11-27 2012-08-22 株式会社ＨｙｄｒｏＷｏｒｋｓ Stirrer
JP5148372B2 (en) * 2008-05-29 2013-02-20 パナソニック株式会社 Method of circulating and using fluorine-containing wastewater and wastewater treatment equipment used therefor
EP2921214B1 (en) * 2010-02-25 2018-10-24 Alfa Laval Corporate AB Exhaust gas and gas scrubber fluid cleaning equipment and method
JP5843701B2 (en) 2012-06-11 2016-01-13 川崎重工業株式会社 Waste water treatment device, exhaust gas recirculation unit, engine system, and ship
WO2013187038A1 (en) * 2012-06-11 2013-12-19 川崎重工業株式会社 Wastewater treatment device, wastewater treatment system, exhaust gas recirculation unit, engine system, and ship
CN102976530A (en) * 2012-11-30 2013-03-20 吴江市万事达环保溶剂有限公司 Device for treating and recycling chemical production sewage
CN103466768B (en) * 2013-09-18 2014-12-10 北京大学 Floc reflux coagulation process for treating biochemical printing and dyeing effluent

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5128263A (en) * 1974-09-03 1976-03-10 Kajima Doro Kk
JPH0686986A (en) * 1992-03-30 1994-03-29 Ube Ind Ltd Method for treating waste liquid and device using the method
JPH07204657A (en) * 1994-01-13 1995-08-08 Seiwa Kiko Kk Portable turbid water treatment device
US20020113023A1 (en) * 2000-07-07 2002-08-22 Krulik Gerald A. System and method for simultaneous removal of arsenic and fluoride from aqueous solutions
JP2013256880A (en) * 2012-06-11 2013-12-26 Kawasaki Heavy Ind Ltd Waste water treating system, exhaust recirculating unit, engine system, and ship

Also Published As

Publication number Publication date
JP6378739B2 (en) 2018-08-22
JP2018079445A (en) 2018-05-24
CN109937078A (en) 2019-06-25
KR20190071807A (en) 2019-06-24

Similar Documents

Publication Publication Date Title
JP5784719B2 (en) Purification equipment for gas scrubber fluid
JP5859463B2 (en) Exhaust gas and gas scrubber fluid purification apparatus and method
WO2013172380A1 (en) Exhaust gas treatment device for marine diesel engine using fuel of lower quality than heavy oil
JP6177835B2 (en) Scrubber liquid treatment process
KR20150016633A (en) Wastewater treatment device, wastewater treatment system, exhaust gas recirculation unit, engine system, and ship
US10046336B2 (en) Scrubber fluid treatment process
JP6378739B2 (en) Engine system for large ships
EP2364760B1 (en) Cleaning equipment for gas scrubber fluid
AU2018317432B2 (en) Treatment of liquid streams containing high concentrations of solids using ballasted clarification
CN110204085A (en) A kind of multiple coil air-float degreasing device and its application
JP4368717B2 (en) Coagulation sedimentation processing equipment
CN111233291A (en) Sediment treatment method and system in dredging, dehydrating and drying engineering
KR101959413B1 (en) Liquid Cleaning Purifier
KR20170001265A (en) Scrubber fluid treatment process
EP4332067A1 (en) System and methodfor treating a fluid used for cleaning exhaust gas
CN108726753A (en) A kind of oil field waste microwave processing equipment
JP2006122872A (en) Apparatus for treating sewage
KR20220113176A (en) Water Treatment System Capable of Automatic Supplying of Chemicals
JPH07195100A (en) Sludge treating device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17872065

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20197015767

Country of ref document: KR

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 17872065

Country of ref document: EP

Kind code of ref document: A1