EA201691433A1 - Способ удаления сульфата из сточных вод - Google Patents

Способ удаления сульфата из сточных вод

Info

Publication number
EA201691433A1
EA201691433A1 EA201691433A EA201691433A EA201691433A1 EA 201691433 A1 EA201691433 A1 EA 201691433A1 EA 201691433 A EA201691433 A EA 201691433A EA 201691433 A EA201691433 A EA 201691433A EA 201691433 A1 EA201691433 A1 EA 201691433A1
Authority
EA
Eurasian Patent Office
Prior art keywords
solution
calcium
separate
sulfate
contact
Prior art date
Application number
EA201691433A
Other languages
English (en)
Other versions
EA031572B1 (ru
Inventor
Мика МАРТИКАЙНЕН
Original Assignee
Оутотек (Финлэнд) Ой
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 Оутотек (Финлэнд) Ой filed Critical Оутотек (Финлэнд) Ой
Publication of EA201691433A1 publication Critical patent/EA201691433A1/ru
Publication of EA031572B1 publication Critical patent/EA031572B1/ru

Links

Classifications

    • 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
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • 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
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/18—Carbonates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/46—Sulfates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/78—Compounds containing aluminium and two or more other elements, with the exception of oxygen and hydrogen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • 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
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • 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
    • C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
    • 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
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • 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
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • 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
    • 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
    • C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
    • 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
    • C02F11/123—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using belt or band filters
    • 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
    • C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • 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
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/101—Sulfur compounds
    • 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
    • C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/02—Temperature
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/44—Time
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/046—Recirculation with an external loop
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions

Abstract

Изобретение относится к способу и установке для удаления сульфата, кальция и/или других растворимых металлов из сточных вод, где приводят в контакт NaOH и Al(OH)при температуре по меньшей мере 60°С и молярном отношении NaOH:Al(OH)по меньшей мере 1,0 для получения алюмината натрия, сточные воды приводят в контакт с полученным алюминатом натрия и первым соединением кальция для получения шлама, содержащего эттрингит, выполняют отделение твердого вещества от жидкости для шлама, содержащего эттрингит, для отделения твердых веществ от жидкости, получая таким образом первый раствор, первый раствор приводят в контакт с карбонизирующим агентом для нейтрализации первого раствора и осаждения кальция, содержащегося в первом растворе, в виде карбоната кальция, и выполняют отделение твердого вещества от жидкости для отделения осажденного карбоната кальция от первого раствора с получением воды, имеющей пониженное содержание сульфата, кальция и/или других растворимых металлов.
EA201691433A 2014-02-26 2015-02-25 Способ удаления сульфата из сточных вод EA031572B1 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20145183A FI127809B (en) 2014-02-26 2014-02-26 Method for removing sulfate from waste water
PCT/FI2015/050108 WO2015128541A1 (en) 2014-02-26 2015-02-25 Method of removing sulphate from waste water

Publications (2)

Publication Number Publication Date
EA201691433A1 true EA201691433A1 (ru) 2017-02-28
EA031572B1 EA031572B1 (ru) 2019-01-31

Family

ID=52633307

Family Applications (1)

Application Number Title Priority Date Filing Date
EA201691433A EA031572B1 (ru) 2014-02-26 2015-02-25 Способ удаления сульфата из сточных вод

Country Status (12)

Country Link
EP (1) EP3110765B1 (ru)
CN (1) CN106103360B (ru)
AR (1) AR099573A1 (ru)
AU (1) AU2015222009B2 (ru)
BR (1) BR112016018944B8 (ru)
CA (1) CA2939399C (ru)
EA (1) EA031572B1 (ru)
ES (1) ES2711620T3 (ru)
FI (1) FI127809B (ru)
PT (1) PT3110765T (ru)
WO (1) WO2015128541A1 (ru)
ZA (1) ZA201605976B (ru)

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US20180251390A1 (en) * 2017-02-17 2018-09-06 James Hardie Technology Limited Systems and methods for treating cementitious article forming process water
CN107416881A (zh) * 2017-07-26 2017-12-01 象州县科学技术情报研究所 硫酸钡制备过程中钙铝副产品生成工艺
WO2019058215A1 (en) 2017-09-20 2019-03-28 Smr Technologies Limited REAGENT SUITABLE FOR TREATING WATER WITH HIGH SULFATE CONTENT
CA3076461A1 (en) 2017-09-20 2019-03-28 Smr Technologies Limited New process for the treatment of high sulphate waters
US10358355B2 (en) * 2017-12-14 2019-07-23 American Air Liquide, Inc. Aluminum hydroxide coagulant recovery from water/wastewater treatment sludge
GR1009539B (el) * 2018-04-03 2019-06-03 Νικολαος Κωνσταντινου Νταϊλιανης Μεθοδος και απλος εξοπλισμος για την ανακυκλωση των αλκαλικων αποβλητων των βιομηχανιων διελασης αλουμινιου προς παραγωγη χρησιμων κροκιδωτικων
MX2020013587A (es) 2018-06-13 2021-02-26 The Water Company Llc Eliminacion controlada de iones de un fluido acuoso.
CN111138000A (zh) * 2018-11-06 2020-05-12 唐山紫天化工防腐有限公司 铝材挤压模具洗模废水回收利用零排放处理的工艺方法
CA3139234A1 (en) * 2019-05-07 2020-11-12 Heritage Research Group, Llc Methods of reducing calcite formation and solubilized metals from aqueous effluent streams
SE545642C2 (en) * 2020-07-16 2023-11-21 Axolot Solutions Holding Ab A method and a system for removal of sulfate from wastewater by electrocoagulation
CN112939314B (zh) * 2021-02-02 2022-10-25 江西天新药业股份有限公司 叶酸酸提水析母液的处理方法、叶酸精制的方法
CN114735723A (zh) * 2021-06-22 2022-07-12 华融化学股份有限公司 一种钾碱粗盐水精制工艺

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Also Published As

Publication number Publication date
WO2015128541A1 (en) 2015-09-03
FI20145183A (fi) 2015-08-27
EP3110765A1 (en) 2017-01-04
EP3110765B1 (en) 2018-11-28
CA2939399A1 (en) 2015-09-03
AU2015222009B2 (en) 2018-03-01
BR112016018944B8 (pt) 2023-02-07
ZA201605976B (en) 2020-01-29
AR099573A1 (es) 2016-08-03
CN106103360A (zh) 2016-11-09
BR112016018944B1 (pt) 2021-10-26
FI127809B (en) 2019-03-15
PT3110765T (pt) 2019-02-27
ES2711620T3 (es) 2019-05-06
CN106103360B (zh) 2021-03-12
BR112016018944A2 (ru) 2017-08-15
EA031572B1 (ru) 2019-01-31
AU2015222009A1 (en) 2016-09-01
CA2939399C (en) 2022-10-25

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Designated state(s): AM AZ BY KG TJ TM