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WO2005028379A1 - Procede et appareil de traitement de l'eau de drainage a partir d'une etape de lavage a l'eau de la cendre volante - Google Patents

Procede et appareil de traitement de l'eau de drainage a partir d'une etape de lavage a l'eau de la cendre volante Download PDF

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Publication number
WO2005028379A1
WO2005028379A1 PCT/JP2003/012095 JP0312095W WO2005028379A1 WO 2005028379 A1 WO2005028379 A1 WO 2005028379A1 JP 0312095 W JP0312095 W JP 0312095W WO 2005028379 A1 WO2005028379 A1 WO 2005028379A1
Authority
WO
WIPO (PCT)
Prior art keywords
wastewater
inclined plate
fly ash
sediment
tank
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.)
Ceased
Application number
PCT/JP2003/012095
Other languages
English (en)
Japanese (ja)
Inventor
Shinichiro Saito
Tomomichi Nakamura
Noritoshi Tamura
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.)
Taiheiyo Cement Corp
Original Assignee
Taiheiyo Cement Corp
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 Taiheiyo Cement Corp filed Critical Taiheiyo Cement Corp
Priority to AU2003264549A priority Critical patent/AU2003264549A1/en
Priority to PCT/JP2003/012095 priority patent/WO2005028379A1/fr
Priority to TW092126890A priority patent/TW200512036A/zh
Publication of WO2005028379A1 publication Critical patent/WO2005028379A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • 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
    • B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
    • 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
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2494—Feed or discharge mechanisms for settling tanks provided with means for the removal of gas, e.g. noxious gas, air
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/22—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/006—Wet processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/02—Working-up flue dust
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

Definitions

  • the present invention relates to a method and an apparatus for treating wastewater generated by washing incineration fly ash discharged from incineration equipment or the like.
  • waste incinerators such as strike-type incinerators, fluidized-bed incinerators, melt-incinerators, Rho-Lee kilns, and batch furnaces.
  • the incinerated ash was landfilled at the final waste disposal site, but this incinerated ash contains C a 0, S i 0 2 , 8 1 2 0 3 and 6 2 0 3 etc. necessary as cement raw materials. Therefore, it can be sufficiently recycled as a raw material for cement firing.
  • the raw materials are exposed to a high temperature of more than 140 ° C, so that dioxins contained in the incineration ash can be decomposed, and heavy metals are contained in cement clinker minerals. Can be captured and fixed.
  • incinerated main ash is used as a raw material for cement after only removing iron by magnetic separation and removing foreign matter by sieving.
  • incinerated fly ash contains a high concentration of chlorine in the form of NaC1, etc., and the chlorine component is removed by water washing to prevent a negative effect on the stable operation of the kiln and the quality of cement. Is followed by a cement raw material.
  • the incinerated fly ash is turned into a slurry in warm water and supplied to a solid-liquid separator such as a belt filter, where it is sprinkled from above and, at the same time, is moved above the belt filter while water is suctioned from below and washed with water. Desalting and solid-liquid separation immediately.
  • the fly ash cake remaining on the belt fill is used as a raw material for cement, while the filtrate in which the chlorine component is dissolved contains heavy metals contained in the incinerated fly ash, as shown in Fig. 3, for example.
  • the filtrate contained in the filtrate tank 1 is sent to the carbon dioxide gas reaction tank 2, where it is contained in the filtrate.
  • Metal ions react with a large amount of carbon dioxide contained in the kiln exhaust gas and are neutralized.
  • the filtrate is degassed in the degassing tank 3, the sediment is removed in the sedimentation tanks 4 and 5, the finishing agent is added in the chemical reaction tank 7 through the first supernatant water tank 6, and then the sedimentation tank 8
  • the precipitate is removed at. Further, the water is filtered in the sand filtration tanks 10 and 11 through the second supernatant water tank 9, stored in the treatment water tank 13 through the Hg adsorption tank 12, and discharged.
  • the sediment removed in sedimentation tanks 4, 5 and 8 is stored in sludge pit 14 and then separated into solid and liquid by filtration press 15 and water is returned from filtration water tank 16 to carbon dioxide gas reaction tank 2. Is performed.
  • the sand filtration tanks 10 and 11 and the Hg adsorption tank 12 require backwashing, and the backwash water generated at this time is sent from the backwash water pit 17 to the sludge bit 14 and filled. It is separated into solid and liquid by a press 15.
  • the present invention has been made to solve such a problem, and an object of the present invention is to provide a method and an apparatus for treating fly ash washing wastewater which have a simple configuration, have low equipment costs, and can be easily maintained.
  • the method for treating fly ash washing wastewater according to the present invention is a method for treating wastewater when fly ash is dissolved in water and desalted, and after adjusting the pH of the wastewater, from the wastewater adjusted for pH. This is a method in which sediment is removed by an inclined plate sedimentation tank, and suspended solids are removed from the wastewater from which the sediment has been removed by a membrane filtration device.
  • a finishing agent may be added to the wastewater from which the sediment has been removed in the inclined plate sedimentation tank, and the sediment may be removed from the wastewater to which the finishing agent has been added by the second inclined plate sedimentation tank.
  • suspended matter is removed by a membrane filtration device from wastewater from which sediment has been removed in the second inclined plate settling tank.
  • a flocculant to the wastewater when removing the sediment by the inclined plate settling tank or the second inclined plate settling tank.
  • the sludge plate type sedimentation tank The sediment removed in the second slant plate sedimentation tank and the suspended solids removed by the membrane filtration device are separated into solid and liquid, and the solid can be used as a cement raw material.
  • An apparatus for treating fly ash washing wastewater is an apparatus for treating wastewater when fly ash is dissolved in water and desalted, and a pH adjusting apparatus for adjusting the pH of the wastewater, and a pH adjusting apparatus. It is equipped with an inclined plate sedimentation tank that removes sediment from the drained water, and a membrane filtration device that removes suspended solids from the wastewater from which the sediment has been removed.
  • a chemical reaction tank for adding the finishing agent to the wastewater from which sediment was removed by the inclined plate sedimentation tank, and a second inclined plate sedimentation tank for removing the sediment from the wastewater to which the finishing agent was added May be further provided.
  • the membrane filtration device shall remove suspended matter from the wastewater from which sediment has been removed in the second swash plate type settling tank.
  • Inclined plate sedimentation tank ⁇ A solid-liquid separation device that separates the sediment removed by the second inclined plate sedimentation tank and the suspended matter removed by the membrane filtration device into solid and liquid and uses the solid as a cement raw material. It can also be provided.
  • FIG. 1 is a block diagram schematically showing an apparatus for treating fly ash washing wastewater according to an embodiment of the present invention
  • FIG. 2 is a cross-sectional view showing a gas absorption reaction / deaeration tank used in the embodiment
  • FIG. 3 is a block diagram schematically showing a conventional apparatus for treating fly ash washing wastewater.
  • FIG. 1 shows the configuration of a fly ash washing wastewater treatment apparatus according to an embodiment of the present invention.
  • Gas absorption reaction and degassing tank 21 are connected to filtrate tank 1 that contains filtrate when incinerated fly ash is washed and desalinated, and gas absorption reaction is performed.
  • a chemical reaction tank 23 and a second inclined plate settling tank 24 are sequentially connected.
  • a membrane filtration device 25 is connected to the second inclined plate settling tank 24, and a treated water tank 13 is connected to the membrane filtration device 25.
  • the first inclined plate settling tank 22 and the second inclined plate settling tank 2 A filter press 15 is connected to 4 and the membrane filtration device 25 via a slurry pipe 14, and a filtration water tank 16 is connected to the filter press 15.
  • the filtrate contained in the filtrate tank 1 is sent to a gas absorption reaction / removal unit 21, where the pH is adjusted by a reaction with carbon dioxide gas.
  • Gas absorption reactionDegassing tank 21 is roughly divided into reaction tank 31 for reacting filtrate L1 and carbon dioxide gas G in countercurrent, and degassing for dewatering wastewater L2 discharged from reaction tank 31.
  • a tank 32 is provided.
  • Filtration liquid L 1 from the filtrate tank 1 is supplied to the reaction tank 31 through a water supply pipe 33 and the liquid distributor plate 34, Ca 2+, S 0 4 2 -, contains metal ions Mg 2+ and the like.
  • a large amount of carbon dioxide G is blown into the reaction tank 31 from a cement firing kiln (not shown) via the blow control device 35.
  • the carbon dioxide gas G is blown from the air supply pipe 36 at the lower part of the reaction tank 31 through the diffuser plate 37 to the air bubbles having a fine bubble diameter of 0.5 to 3 mm. through contact with the filtrate L 1 and countercurrent, Ca 2+ in the filtrate L 1, S 0 4 2 - , and with ions of Mg 2+ or the like is neutralized Ca C0 3, CaS0 4, MgC0 3 or the like Become.
  • the carbon dioxide gas G is exhausted to the atmosphere via the exhaust pipe 39.
  • the wastewater L2 which has completed the reaction with the carbon dioxide gas G, is introduced into the degassing tank 32 to be degassed, and the metal carbonate generated by insolubilization is added by the coagulation added from an adding device (not shown). Aggregated by agent C.
  • the wastewater L2 in the degassing tank 32 is stirred by the stirrer 40 to promote the reaction.
  • the pH value of the wastewater L2 in the degassing tank 32 is monitored by the pH meter 41, and the blowing control device 35 supplies the reaction tank 31 based on the output of the pH meter 41 so that the pH value is maintained constant.
  • the supply amount of carbon dioxide G is controlled.
  • the drainage L 2 thus adjusted in pH is supplied to the first inclined plate settling tank 22 through the drain outlet 42 to remove the sediment.
  • the sediment T generated in the removal of f32 is withdrawn through a sludge discharge port 43 by a pump or the like.
  • the first inclined plate type settling tank 22 has a plurality of inclined plates arranged in parallel with each other, drains water upward between these inclined plates, and removes insoluble substances contained in the drainage from each inclined plate. Efficient sedimentation with very small footprint due to sedimentation on the surface Separation can be performed.
  • the insoluble material precipitated on the surface of each inclined plate slides down the surface of the inclined plate, accumulates in the sludge hopper at the lower end, and is concentrated.
  • the wastewater from which the insoluble matter has been separated enters the outflow trough located above the inclined plate, and is sent to the chemical reaction tank 23.
  • a finishing agent such as chelate / ferrous chloride is added to the wastewater sent from the first inclined plate settling tank 22. Further, the wastewater is supplied to a second inclined plate settling tank 24, and after the coagulant is added again, the sediment is removed.
  • the first inclined plate type settling tank 22 and the second inclined plate type settling tank 24 for example, Incaramelesepare made by Nippon Inka Co., Ltd. can be used. Thereafter, the wastewater is sent to a membrane filtration device 25, where suspended substances are removed.
  • the membrane filtration device 25 separates suspended substances contained in the influent water with high efficiency using a microfiltration device.
  • the microfiltration device includes a drum-shaped filtration device and a disk-shaped filtration device.
  • the drum filter is composed of a plurality of filter elements mounted around the drum rotating at a low speed, and the inflow water supplied into the drum is filtered through each filter element.
  • the disk-shaped filter is mounted on a plurality of hollow disks arranged in parallel at an interval on the outer periphery of the center drum.
  • Each disc is divided into a number of segments, and each segment has a filter element on both sides.
  • the influent supplied into the center drum enters the segments of each disc and is filtered through filter elements on both sides of the segments.
  • Such a membrane filtration device 25 is capable of filtering by the natural flow of inflow water, has a very long filter life, can be easily replaced with a filter element having a different opening diameter, and is easy to maintain.
  • a filter element having a different opening diameter For example, it is possible to use an Inka micro filter manufactured by Nippon Inka Co., Ltd.
  • the wastewater from which suspended solids are separated by the membrane filtration device 25 is stored in the treated water tank 13 and released. Swept away.
  • the sediment removed in the first inclined plate sedimentation tank 22 and the second inclined plate sedimentation tank 24 and the suspended matter separated in the membrane filtration device 25 are stored in the sludge pit 14
  • solid-liquid separation is performed by a filtration press 15, and water is returned from the filtration water tank 16 to the first inclined plate settling tank 22, and the solid content is used as a part of the cement raw material.
  • the coagulant C was added to the wastewater L 2 in the degassing tank 32 of the gas absorption reaction and degassing tank 21, but the present invention is not limited to this. Then, only the deaeration of the wastewater 2 may be performed, and the coagulant C may be added immediately before the wastewater 2 is supplied to the first inclined plate settling tank 22.
  • the present invention after adjusting the pH of the wastewater, sediment is removed from the pH-adjusted wastewater by an inclined plate settling tank, and membrane filtration is performed from the wastewater from which the precipitate has been removed. Since the suspended solids are removed by the device, it is possible to treat the fly ash washing wastewater with a simple device configuration, thereby reducing equipment costs and facilitating maintenance.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Ceramic Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physical Water Treatments (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

L'invention porte sur un procédé de traitement de l'eau de drainage à partir d'une étape de lavage à l'eau de la cendre volante. Selon ce procédé, l'eau de drainage est soumise à un ajustement du pH dans un réceptacle de réaction/dégazage (21) par absorption du gaz, les précipités sont éliminés de l'eau de drainage dans un premier réceptacle de sédimentation (22) à plaque inclinée et un second réceptacle de sédimentation à plaque inclinée (24), les matières en suspension étant retirées de l'eau de drainage dans un dispositif de filtration à membrane (25), et les précipités sont retirés dans les premier et second réceptacles de sédimentation à plaque inclinée (22, 24), et les matières en suspension retirées par un dispositif de filtration à membrane (25) sont soumises à la séparation solides-liquides dans un filtre-presse (15). Les solides séparés sont utilisés comme matière première pour le ciment.
PCT/JP2003/012095 2003-09-22 2003-09-22 Procede et appareil de traitement de l'eau de drainage a partir d'une etape de lavage a l'eau de la cendre volante Ceased WO2005028379A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2003264549A AU2003264549A1 (en) 2003-09-22 2003-09-22 Method and apparatus for treating drain water from step of washing fly ash with water
PCT/JP2003/012095 WO2005028379A1 (fr) 2003-09-22 2003-09-22 Procede et appareil de traitement de l'eau de drainage a partir d'une etape de lavage a l'eau de la cendre volante
TW092126890A TW200512036A (en) 2003-09-22 2003-09-29 Method and apparatus for treating drain water containing washed fly ash

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2003/012095 WO2005028379A1 (fr) 2003-09-22 2003-09-22 Procede et appareil de traitement de l'eau de drainage a partir d'une etape de lavage a l'eau de la cendre volante

Publications (1)

Publication Number Publication Date
WO2005028379A1 true WO2005028379A1 (fr) 2005-03-31

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PCT/JP2003/012095 Ceased WO2005028379A1 (fr) 2003-09-22 2003-09-22 Procede et appareil de traitement de l'eau de drainage a partir d'une etape de lavage a l'eau de la cendre volante

Country Status (3)

Country Link
AU (1) AU2003264549A1 (fr)
TW (1) TW200512036A (fr)
WO (1) WO2005028379A1 (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100374378C (zh) * 2006-05-19 2008-03-12 高武 一种糠醛生产工业废水的回收处理方法
WO2009006295A2 (fr) 2007-06-28 2009-01-08 Calera Corporation Procédés et systèmes de dessalement qui comprennent une précipitation de composés de type carbonate
US7875163B2 (en) 2008-07-16 2011-01-25 Calera Corporation Low energy 4-cell electrochemical system with carbon dioxide gas
US7939336B2 (en) 2008-09-30 2011-05-10 Calera Corporation Compositions and methods using substances containing carbon
US7993511B2 (en) 2009-07-15 2011-08-09 Calera Corporation Electrochemical production of an alkaline solution using CO2
US7993500B2 (en) 2008-07-16 2011-08-09 Calera Corporation Gas diffusion anode and CO2 cathode electrolyte system
US8006446B2 (en) 2008-09-30 2011-08-30 Calera Corporation CO2-sequestering formed building materials
US8137444B2 (en) 2009-03-10 2012-03-20 Calera Corporation Systems and methods for processing CO2
US8333944B2 (en) 2007-12-28 2012-12-18 Calera Corporation Methods of sequestering CO2
US8357270B2 (en) 2008-07-16 2013-01-22 Calera Corporation CO2 utilization in electrochemical systems
US8470275B2 (en) 2008-09-30 2013-06-25 Calera Corporation Reduced-carbon footprint concrete compositions
US8491858B2 (en) 2009-03-02 2013-07-23 Calera Corporation Gas stream multi-pollutants control systems and methods
US8834688B2 (en) 2009-02-10 2014-09-16 Calera Corporation Low-voltage alkaline production using hydrogen and electrocatalytic electrodes
US8869477B2 (en) 2008-09-30 2014-10-28 Calera Corporation Formed building materials
US9133581B2 (en) 2008-10-31 2015-09-15 Calera Corporation Non-cementitious compositions comprising vaterite and methods thereof
US9260314B2 (en) 2007-12-28 2016-02-16 Calera Corporation Methods and systems for utilizing waste sources of metal oxides
CN106032302A (zh) * 2016-06-16 2016-10-19 浙江富春江环保热电股份有限公司 一种垃圾焚烧飞灰的清洗废水处理方法

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JPH05305279A (ja) * 1992-04-30 1993-11-19 Kubota Corp 焼却炉から排出される灰等の脱塩処理方法及び処理装置
JPH083655A (ja) * 1994-04-22 1996-01-09 Mitsubishi Materials Corp 飛灰からの重金属類の回収方法
JPH11100243A (ja) * 1997-07-14 1999-04-13 Taiheiyo Cement Corp セメント原料化処理方法
JP2002028695A (ja) * 2000-07-18 2002-01-29 Kurita Water Ind Ltd ダイオキシン類含有液の処理方法
JP2003062585A (ja) * 2001-08-24 2003-03-04 Tokuyama Corp 排水の処理方法
JP2003144857A (ja) * 2001-11-19 2003-05-20 Daicen Membrane Systems Ltd 排水処理方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05305279A (ja) * 1992-04-30 1993-11-19 Kubota Corp 焼却炉から排出される灰等の脱塩処理方法及び処理装置
JPH083655A (ja) * 1994-04-22 1996-01-09 Mitsubishi Materials Corp 飛灰からの重金属類の回収方法
JPH11100243A (ja) * 1997-07-14 1999-04-13 Taiheiyo Cement Corp セメント原料化処理方法
JP2002028695A (ja) * 2000-07-18 2002-01-29 Kurita Water Ind Ltd ダイオキシン類含有液の処理方法
JP2003062585A (ja) * 2001-08-24 2003-03-04 Tokuyama Corp 排水の処理方法
JP2003144857A (ja) * 2001-11-19 2003-05-20 Daicen Membrane Systems Ltd 排水処理方法

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100374378C (zh) * 2006-05-19 2008-03-12 高武 一种糠醛生产工业废水的回收处理方法
WO2009006295A2 (fr) 2007-06-28 2009-01-08 Calera Corporation Procédés et systèmes de dessalement qui comprennent une précipitation de composés de type carbonate
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