US20110162258A1 - Wastewater sludge processing system - Google Patents

Wastewater sludge processing system Download PDF

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Publication number
US20110162258A1
US20110162258A1 US12/831,997 US83199710A US2011162258A1 US 20110162258 A1 US20110162258 A1 US 20110162258A1 US 83199710 A US83199710 A US 83199710A US 2011162258 A1 US2011162258 A1 US 2011162258A1
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US
United States
Prior art keywords
solvent
sludge
oil
cellulose
solids
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US12/831,997
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English (en)
Inventor
Eugene F. DeShazo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NOWA Technology Inc
Original Assignee
NOWA Technology Inc
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 NOWA Technology Inc filed Critical NOWA Technology Inc
Priority to US12/831,997 priority Critical patent/US20110162258A1/en
Assigned to NOWA TECHNOLOGY, INC. reassignment NOWA TECHNOLOGY, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DE SHAZO, EUGENE F
Publication of US20110162258A1 publication Critical patent/US20110162258A1/en
Priority to US14/094,391 priority patent/US20140216117A1/en
Priority to US15/202,543 priority patent/US20160376204A1/en
Abandoned legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/02—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only
    • C10L1/026—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only for compression ignition
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/08—Production of synthetic natural gas
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/40—Solid fuels essentially based on materials of non-mineral origin
    • C10L5/46—Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/002—Sludge treatment using liquids immiscible with water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Definitions

  • the invention relates generally to a process for the treatment of wastewater sludge into desirable products with no undesirable waste left over. More specially the process relates to drying the sludge, and separating the sludge into oil, water, and cellulose/minerals by the use of chemical and physical reactions.
  • Raw influent includes household waste liquid from toilets, baths, showers, kitchens, sinks, and so forth that is disposed of via sewers.
  • sewage also includes liquid waste from industry and commerce.
  • Municipal wastewater therefore includes residential, commercial, and industrial liquid waste discharges, and may include storm water runoff.
  • Conventional sewage treatment involves three stages, called primary, secondary and tertiary treatment.
  • the solids are separated from the wastewater stream.
  • dissolved biological matter is progressively converted into a solid mass by using indigenous, water-borne micro-organisms.
  • the biological solids are neutralized then disposed of or re-used, and the treated water may be disinfected chemically or physically (for example by lagoons and microfiltration).
  • the final effluent can be discharged into a stream, river, bay, lagoon or wetland, or it can be used for the irrigation of a golf course, green way or park. If it is sufficiently clean, it can also be used for groundwater recharge or agricultural purposes.
  • the sludges accumulated in a wastewater treatment process must be treated and disposed of in a safe and effective manner.
  • the purpose of digestion is to reduce the amount of organic matter and the number of disease-causing microorganisms present in the solids.
  • the most common treatment options include anaerobic digestion, aerobic digestion, and composting.
  • Choice of a wastewater solid treatment method depends on the amount of solids generated and other site-specific conditions. However, in general, composting is most often applied to smaller-scale applications followed by aerobic digestion and then lastly anaerobic digestion for the larger-scale municipal applications.
  • wastewater sludge can be processed economically by virtue of using products of the treatment process as a fuel for one or more heating steps in the process. It has further been found that wastewater sludge can be processed such that at the end of the process of the present invention, all the useful materials—oil, cellulose and minerals—have been captured. Most important, it has still further been found that wastewater sludge can be processed such that there is nothing left to be incinerated, landfilled, or otherwise disposed of, making the system of the present invention a truly zero-waste process.
  • a zero-waste method of processing wastewater sludge is provide such that at the end of the process of oil, cellulose, and minerals have been captured and there is substantially nothing left to be incinerated, landfilled, or otherwise disposed of.
  • e heating the separated liquids to the boiling point of the solvent and the boiling point of the residual water prior and collecting evaporated solvent and residual water
  • the step of separating liquids and solids is performed in a filter press, and further comprises the steps of;
  • the oil from step (f) is approximately 80% fatty acids, is approximately 65 weight % C16 and C18, and is substantially free of sulfur.
  • the process extracts about 18% oil by weight from undigested sludge and 11% oil by weight from digested sludge.
  • the step of separating liquids and solids produces a filtrate comprising extracted oil, residual solvent, and traces of water.
  • FIG. 1 is part 1 of the process flow diagram.
  • FIG. 2 is part 2 of the process flow diagram.
  • FIG. 3 is part 3 of the process flow diagram.
  • wastewater sludge and “sludge” means sludge accumulated in a wastewater treatment process.
  • solvent means a substance capable of dissolving another substance.
  • filtrate means a liquid or gas that has been filtered.
  • screw feeder means a screw feeder such as a volumetric screw feeder or gravimetric screw feeder, capable of metering material in a production process.
  • filter press means a machine using filtering cloths and plates to separate solids and liquids.
  • biodiesel feedstock means organic material used in the production of biofuels.
  • holding tank means any piece of equipment that is used to store product.
  • Wastewater sludge processing system takes sludge directly from the municipal waste water treatment plant, transforms it into useful products, and leaves no waste behind. It is a low-temperature, low pressure process.
  • the municipal solid waste ( 101 ) is transferred from a treatment plant to a wet sludge holding bin ( 103 ). In the holding bin ( 103 ) the waste is 20-45% solids by weight.
  • the sludge is transferred by first screw feeder ( 105 ) to a dryer ( 107 ) where it is dried to 90% solids. During the drying, liquid is removed as steam ( 109 ).
  • the dried sludge is then ground in a grinder ( 111 ).
  • the dried ground sludge is transferred to a dried feed holding bin ( 203 ).
  • the dried ground sludge is transferred by a screw feeder ( 205 ) along the path ( 1001 A) to the path ( 1001 B) to the mixer reactor ( 113 ).
  • Solvent is added to the sludge in the mixer reactor ( 113 ) via pump a first pump ( 115 ). Within the mixer reactor ( 113 ) the mixture is mixed and heated. The resulting material is viscous hydrocarbon and/or cellulose and minerals in suspension. The resulting solution is pumped by pump ( 215 ) into a filter press ( 117 ) where the filtrate and solids are separated. The filtrate which includes extracted oil, residual solvent, and traces of water, is sent to a holding tank ( 119 ). The filtrate is pumped via a second pump ( 215 ) along the path ( 2005 A) to the path ( 2005 B) to the heat exchanger ( 121 ).
  • the filtrate is heated to the boiling point of the solvent and the boiling point of the residual water prior to entering the flash drum ( 123 ).
  • the solvent and residual water are evaporated and removed via the vacuum pump ( 125 ).
  • the solvent-free oil is collected from the bottom of the flash drum ( 123 ) and moved by third pump ( 315 ) to a holding tank ( 127 ) ready for shipping as biodiesel feedstock.
  • the solvent and residual water vapor from the vacuum pump ( 125 ) discharge and the vent lines from the upstream process along the path ( 2003 A) to the path ( 2003 B) are collected and are routed to the solvent recovery system indicated generally as ( 129 ).
  • the solvent recovery system indicated generally as ( 129 ) vapors are condensed back to a liquid state.
  • the liquid then travels along the path ( 2001 A) to the path ( 2001 B) to the condenser/separator ( 131 ) which removes the water from the solvent.
  • the water and the solvent are both returned to be reused in the process.
  • the cellulose and minerals are moved from the condenser/separator ( 131 ) by a fourth pump ( 415 ) into the make-up solvent tank ( 133 ).
  • the vented vapor from the condenser/separator ( 131 ) goes to an activated carbon canister ( 135 ) and then into the make-up solvent tank ( 133 ).
  • Fresh solvent is also added to the make-up solvent tank ( 133 ).
  • Hot water ( 139 ) is also removed from the condenser/separator ( 131 ) for reuse.
  • the cellulose/mineral mixture is collected and sent to a dryer ( 141 ) where the solvent is removed and recovered.
  • the cellulose/mineral mixture proceeds to a holding tank ( 303 ).
  • the third screw feeder ( 305 ) takes the cellulose/mineral mixture along the path ( 2007 A) to the path ( 2007 B) to a furnace ( 143 ) that provides heat for the process.
  • the ash that remains can be processed for further byproduct recovery ( 145 ) or alternatively, it is used as a byproduct without further processing.
  • a nitrogen tank ( 147 ) uses the fifth pump ( 515 ) to move the nitrogen along the path ( 1001 A) to the path ( 1001 B) to the mixer reactor ( 113 ), the filtrate tank ( 119 ), the dryer ( 141 ) and the dried cellulose bin ( 303 ).
  • the system does not employ further separation, but rather, the cellulose/mineral mixture is used as fuel in an alternative fuel furnace to dry the incoming sludge.
  • the oil has a 19,000 Btu/pound energy value and the cellulose/mineral mixture has a 7000 Btu/pound energy value.
  • the oil is considered to be a perfect feedstock for biodiesel. It is 80% fatty acids (65% C16 and C18), and has almost no sulfur. It also can be used as fuel oil without further processing.
  • the process extracts 18% oil by weight from undigested sludge and 11% oil by weight from digested sludge.
  • a bone dry pound of sludge yields 11-18% oil, 50-60% cellulose and 30% minerals (though the process need not separate the cellulose and minerals.
  • the drying step of the process takes about 45% of the energy cost of the process. It should be noted that because the process does not employ a washing step, drying costs are minimized.
  • the Mixer/Reactor was sized** to process 20 lb of solids on a dry basis (22.2 lb of dried MSW containing 90% solids) per batch of 3 hours duration. Forty (40) pounds of dry solids processed during a shift contain an estimated 37.5% or 15 pounds of oil. Approximately two (2) gallons of oil at 95% recovery are to be produced during the 8 hours of operation each day.
  • the term “preferably” is non-exclusive and means “preferably, but not limited to.”
  • means-plus-function or step plus-function limitations will only be employed where for a specific claim limitation all of the following conditions are present in that limitation: a) “means for” or “step for” is expressly recited; b) a corresponding function is expressly recited; and c) structure, material or acts that support that structure are not recited.
  • the terminology “present invention” or “invention” may be used as a reference to one or more aspect within the present disclosure.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Sludge (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
US12/831,997 2009-07-07 2010-07-07 Wastewater sludge processing system Abandoned US20110162258A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/831,997 US20110162258A1 (en) 2009-07-07 2010-07-07 Wastewater sludge processing system
US14/094,391 US20140216117A1 (en) 2009-07-07 2013-12-02 Method for Reclaiming Usable Products from Biosolids
US15/202,543 US20160376204A1 (en) 2009-07-07 2016-07-05 Method for Reclaiming Usable Products from Biosolids

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US22361709P 2009-07-07 2009-07-07
US12/831,997 US20110162258A1 (en) 2009-07-07 2010-07-07 Wastewater sludge processing system

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US13/840,750 Continuation-In-Part US20140001121A1 (en) 2009-07-07 2013-03-15 Method for Reclaiming Usable Products from Biosolids
US14/094,391 Continuation-In-Part US20140216117A1 (en) 2009-07-07 2013-12-02 Method for Reclaiming Usable Products from Biosolids

Publications (1)

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US20110162258A1 true US20110162258A1 (en) 2011-07-07

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US12/831,997 Abandoned US20110162258A1 (en) 2009-07-07 2010-07-07 Wastewater sludge processing system

Country Status (15)

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US (1) US20110162258A1 (ru)
EP (1) EP2451752A2 (ru)
JP (1) JP2012532746A (ru)
KR (1) KR20120120106A (ru)
CN (1) CN102471111A (ru)
BR (1) BR112012000298A2 (ru)
CA (1) CA2768176A1 (ru)
CL (1) CL2012000007A1 (ru)
CO (1) CO6430452A2 (ru)
EA (1) EA201200085A1 (ru)
IL (1) IL217451A0 (ru)
MA (1) MA33415B1 (ru)
SG (1) SG177517A1 (ru)
WO (1) WO2011005883A2 (ru)
ZA (1) ZA201200043B (ru)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017213875A1 (en) * 2016-06-11 2017-12-14 Weir Victor A Ii Water solids separator system and method
US10245526B2 (en) 2014-09-18 2019-04-02 Bridgestone Corporation Extractor and related methods
CN110845101A (zh) * 2019-11-29 2020-02-28 湖南长岭石化科技开发有限公司 含油污泥无害化处理系统及其处理方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140001121A1 (en) * 2012-04-18 2014-01-02 Gene F. DeShazo Method for Reclaiming Usable Products from Biosolids
JP6238543B2 (ja) * 2013-03-29 2017-11-29 株式会社クボタ 有機汚泥の脱水方法
KR101338951B1 (ko) * 2013-04-23 2013-12-09 명지대학교 산학협력단 생물증발법을 이용한 고농도 유기 폐수의 무배출 처리 방법
KR20150056429A (ko) * 2013-11-15 2015-05-26 김용환 용매 추출을 이용한 슬러지와 폐수를 포함하는 하수의 처리방법
AU2014368485B2 (en) * 2013-12-20 2018-11-08 Prayon Method for recovering ash from waste incineration
EP3421575A1 (en) * 2017-06-29 2019-01-02 Aarhus Universitet A method for biomass assisted separation of particulate matter from a liquid stream and upgrading of the combined solids
KR102138224B1 (ko) 2017-07-25 2020-07-27 고려대학교 세종산학협력단 수열처리를 통해 하수슬러지로부터 바이오디젤 및 고형연료를 제조하는 방법 및 제조장치

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4741840A (en) * 1981-12-23 1988-05-03 Exxon Research & Engineering Co. Process for treating a sludge containing hydrocarbons
US4906388A (en) * 1988-11-09 1990-03-06 Bechtel Group, Inc. Sewage sludge dewatering process
US5092983A (en) * 1986-09-12 1992-03-03 The Standard Oil Company Process for separating extractable organic material from compositions comprising said extractable organic material intermixed with solids and water using a solvent mixture
US5256251A (en) * 1991-06-10 1993-10-26 Hanover Research Process for drying and solvent-extraction of solids and sludges
US5843311A (en) * 1994-06-14 1998-12-01 Dionex Corporation Accelerated solvent extraction method
US6149802A (en) * 1998-03-31 2000-11-21 Toronto Star Newspapers Ltd. Solvent recovery apparatus and method
US20040219400A1 (en) * 2003-01-22 2004-11-04 Said Al-Hallaj Hybrid fuel cell/desalination systems and method for use

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
JPH04197500A (ja) * 1990-11-28 1992-07-17 Hosokawa Micron Corp 含水スラッジの乾燥方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4741840A (en) * 1981-12-23 1988-05-03 Exxon Research & Engineering Co. Process for treating a sludge containing hydrocarbons
US5092983A (en) * 1986-09-12 1992-03-03 The Standard Oil Company Process for separating extractable organic material from compositions comprising said extractable organic material intermixed with solids and water using a solvent mixture
US4906388A (en) * 1988-11-09 1990-03-06 Bechtel Group, Inc. Sewage sludge dewatering process
US5256251A (en) * 1991-06-10 1993-10-26 Hanover Research Process for drying and solvent-extraction of solids and sludges
US5843311A (en) * 1994-06-14 1998-12-01 Dionex Corporation Accelerated solvent extraction method
US6149802A (en) * 1998-03-31 2000-11-21 Toronto Star Newspapers Ltd. Solvent recovery apparatus and method
US20040219400A1 (en) * 2003-01-22 2004-11-04 Said Al-Hallaj Hybrid fuel cell/desalination systems and method for use

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10245526B2 (en) 2014-09-18 2019-04-02 Bridgestone Corporation Extractor and related methods
US10843103B2 (en) 2014-09-18 2020-11-24 Bridgestone Corporation Extractor and related methods
US11458415B2 (en) 2014-09-18 2022-10-04 Bridgestone Corporation Extractor and related methods
WO2017213875A1 (en) * 2016-06-11 2017-12-14 Weir Victor A Ii Water solids separator system and method
CN110845101A (zh) * 2019-11-29 2020-02-28 湖南长岭石化科技开发有限公司 含油污泥无害化处理系统及其处理方法

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Publication number Publication date
IL217451A0 (en) 2012-02-29
CO6430452A2 (es) 2012-04-30
EP2451752A2 (en) 2012-05-16
BR112012000298A2 (pt) 2017-06-13
KR20120120106A (ko) 2012-11-01
WO2011005883A2 (en) 2011-01-13
JP2012532746A (ja) 2012-12-20
WO2011005883A3 (en) 2011-06-16
ZA201200043B (en) 2012-08-29
CN102471111A (zh) 2012-05-23
MA33415B1 (fr) 2012-07-03
EA201200085A1 (ru) 2012-10-30
CL2012000007A1 (es) 2012-08-24
SG177517A1 (en) 2012-02-28
CA2768176A1 (en) 2011-01-13

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