CN107073394A - 烟道气脱硫废水的处理 - Google Patents

烟道气脱硫废水的处理 Download PDF

Info

Publication number
CN107073394A
CN107073394A CN201480082801.5A CN201480082801A CN107073394A CN 107073394 A CN107073394 A CN 107073394A CN 201480082801 A CN201480082801 A CN 201480082801A CN 107073394 A CN107073394 A CN 107073394A
Authority
CN
China
Prior art keywords
waste water
flue gas
waste
calcium
monovalention
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.)
Pending
Application number
CN201480082801.5A
Other languages
English (en)
Inventor
杨程
M·赵
Q·楚
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.)
Dow Global Technologies LLC
Original Assignee
Dow Global Technologies LLC
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 Dow Global Technologies LLC filed Critical Dow Global Technologies LLC
Publication of CN107073394A publication Critical patent/CN107073394A/zh
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/96Regeneration, reactivation or recycling of reactants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • B01D53/50Sulfur oxides
    • B01D53/501Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/504Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/73After-treatment of removed components
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/40Alkaline earth metal or magnesium compounds
    • B01D2251/404Alkaline earth metal or magnesium compounds of calcium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/30Sulfur compounds
    • B01D2257/302Sulfur oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/40Nitrogen compounds
    • B01D2257/404Nitrogen oxides other than dinitrogen oxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/54Nitrogen compounds
    • B01D53/56Nitrogen oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/80Semi-solid phase processes, i.e. by using slurries
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/38Treatment of water, waste water, or sewage by centrifugal separation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/442Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/20Heavy metals or heavy metal compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/18Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/04Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

一种从烟道气(10)中除去硫氧化物的方法,包含以下步骤:i)使烟道气(10)与包含钙反应物的浆液(14)接触以形成含有不溶性钙化合物和可溶性钙离子的废水(28);ii)对所述废水(28)进行预处理以除去至少一部分不溶性钙化合物;ⅲ)传送所产生的预处理废水(16)通过纳米过滤(NF)膜(30);和iv)使得自步骤ⅲ)的NF废弃物流(32)的至少一部分在步骤i)中再利用。

Description

烟道气脱硫废水的处理
技术领域
本发明是针对进行烟道气脱硫(包括烟道气脱硫废水处理)的方法。
背景技术
大多数燃煤电厂利用了一些类型的烟道气脱硫(FGD)。一个常见的实施例是使用湿式涤气器和碱性试剂(例如石灰石、石灰等)从锅炉所产生的烟道气中吸收二氧化硫。碱性反应物与二氧化硫发生反应而形成不溶性钙化合物(例如亚硫酸钙、硫酸钙等),然后将所述不溶性钙化合物从FGD废水(“排放”)中分离(借助于澄清器-浓缩器、水力旋流器等)。其余FGD废水含有数量可变的悬浮固体和金属以及较高量的氯离子。FGD废水中的高氯化物含量限制了其再用于洗气器中。除具有腐蚀性之外,废水中的高氯化物含量还降低了脱硫效率。因此,为了使湿式涤气器中的氯离子浓度维持在可接受的水平(例如小于15,000ppm),FGD废水中的大部分必须排出。排出之前,可以对废水进行初次和二次处理,包括沉降、化学沉淀(例如凝结、絮凝)、生物学处理和蒸发。鉴于与处理和排出FGD废水有关的成本,因此期望新颖的处理方法。
发明内容
本发明包括一种对存在于FGD废水中的可溶性钙反应物进行再利用以便其可以再用作湿式涤气器中的“补充物”的方法。本发明减少了钙反应物消耗和废水处置需求。在一个优选实施例中,本发明包括一种从烟道气中除去硫氧化物的方法,所述方法包含以下步骤:i)使含有硫氧化物的烟道气与含有钙反应物的浆液接触以形成含有不溶性钙化合物、可溶性二价离子(包括钙和硫酸盐)和单价离子(包括氯离子)的废水;ii)对废水进行预处理,以除去不溶性钙化合物的至少一部分;iii)传送所得预处理废水通过纳米过滤(NF)膜,以产生:a)NF废弃物流,其含有富集浓度的二价离子(包括钙和硫酸盐)和一定浓度的单价离子(包括氯化物),和b)NF渗透液流,其含有单价离子(包括氯化物)和浓度减小的二价离子(包括钙和硫酸盐);和iv)使得自步骤iii)的NF废弃物流的至少一部分在步骤i)中再利用。
附图说明
图1是图解说明本发明的一个实施例的流程图。
具体实施方式
参照图1,本发明包括烟道气脱硫(FGD)方法,其涉及从锅炉(例如,如燃煤电厂中所用)所产生的烟道气中除去硫氧化物。在一个优选实施例中,所述方法涉及步骤(i-iv),包括步骤(i):将含有硫氧化物的烟道气(10)引入湿式涤气器(12)中且使烟道气与包含钙反应物(例如石灰、石灰石等)的浆液(14)接触以形成含有不溶性钙化合物(例如亚硫酸钙、硫酸钙等)、重金属(例如汞、砷、铬等)、可溶性二价离子(包括钙和硫酸盐)和单价离子(包括氯离子)的废水(16)。
随后在步骤(ii)中对来自步骤i)的废水(16)进行预处理(18),以除去不溶性钙化合物的至少一部分。预处理可以涉及沉降(例如沉降池(20))、离心分离(例如水力旋流器)、化学沉淀(22)和微滤或超滤(24)中的一或多种。不溶性钙化合物可以回收且处置(26)或用于各种应用(例如作为石膏来源用于生产墙板)。预处理还可以除去废水中所存在的至少一部分重金属。这可以通过提高pH(例如添加碱,如石灰)和添加化学沉淀剂(如硫化物(例如三巯基-三嗪、硫化钠等))来实现。预处理还可以包括镁沉淀(例如在升高的pH下进行的石灰软化)、二氧化硅除去(例如添加氧化镁)和必需进行的其它污垢因子除去。预处理还优选包括传送废水通过微滤膜或超滤膜(24),从而进一步减少存在于废水中的悬浮固体。微滤膜或超滤膜(24)可以包括多种多样的基础模块(例如螺旋形缠绕、中空纤维、毛细管、扁平圆盘和管状膜模块或“元件”)。代表性半透膜包括由以下材料制成的半透膜:各种陶瓷、金属、纤维素、聚砜、聚醚砜、聚偏二氟乙烯、聚酰胺、聚丙烯腈、聚烯烃等。为了优先除去悬浮固体,可以选择所用膜的平均孔径,例如微滤范围(即,0.1到5微米)内的平均孔径。在一个优选实施例中,膜平均孔径是在超滤范围(即0.01至0.10微米)内。适合膜的代表性实例包括可获自陶氏化学公司的UF膜模块SFx 2660和SFx 2680(x=P、R、D等)。
所产生的预处理废水(28)在步骤(iii)中如下进一步处理:传送预处理废水通过纳米过滤(NF)膜(30),以产生:(a)NF废弃物流(32),所述NF废弃物流包含富集浓度的可溶性二价离子(包括钙和硫酸盐)(例如比存在于废水中的钙离子优选多至少10%、25%且甚至50%)以及一定浓度的单价离子(包括氯化物);和(b)NF渗透液流(34),所述NF渗透液流包含单价离子(包括氯化物)和浓度减小的二价离子(钙和硫酸盐)。重要的是,可溶性二价离子与单价离子的比率大于废水(和NF渗透液流)中的比率。纳米过滤膜可以是螺旋形缠绕元件、盘式管或中空纤维模块。
得自步骤iii)的NF废弃物流的至少一部分在步骤i)中作为步骤(iv)的一部分再利用。即,NF废弃物流作为补充水再循环到湿式涤气器中。NF废弃物流中所富集的钙离子含量(相较于废水)改善了对烟道气中的硫氧化物的吸收且减少了新鲜石灰或石灰石的消耗。另外,再利用的NF废弃物流中所富集的硫酸根离子在湿式涤气器(12)中发生反应且沉淀,从而在NF之后,降低了后处理设备的积垢风险。作为未示出的任选步骤,NF渗透液流可以如下进行后处理:传送其通过逆渗透(RO)膜,以产生:i)RO废弃物流(包括富集浓度的单价离子);和ii)RO渗透液流(包括浓度减小的单价离子)。RO废弃物流可以通过蒸发或电解来进一步处理,以进一步减少操作中的排放。RO渗透液流的至少一部分可以在步骤i)中再利用。RO渗透液流也可以用于其它应用。
RO膜对于几乎所有的溶解盐来说相对不可渗透且阻挡超过约95%的具有单价离子的盐,如氯化钠。RO膜还阻挡超过约95%的无机分子以及分子量大于约100道尔顿的有机分子。NF膜的渗透性大于RO膜且通常阻挡小于约95%的具有单价离子的盐,同时阻挡超过约50%(且常常超过90%)的具有二价离子的盐,这取决于二价离子的种类。NF膜还典型地阻挡纳米范围内的颗粒以及分子量大于约200到500道尔顿的有机分子。
烟道气可以包括氮氧化物,其可以作为独立于本发明方法的单独步骤的一部分转化成分子氮(N2)。即,脱氮步骤与脱硫步骤分开。举例来说,可以在本发明方法之前或之后,从步骤i)所用的烟道气中除去氮氧化物的至少一部分。除去氮氧化物可以通过使氮氧化物与氨或尿素或含有金属离子螯合剂的洗涤液接触来完成。本发明方法中优选不存在此类金属离子螯合剂。

Claims (7)

1.一种从烟道气中除去硫氧化物的方法,包含以下步骤:
i)使所述烟道气与包含钙反应物的浆液接触以形成包含不溶性钙化合物、可溶性钙离子和单价离子的废水,所述单价离子包括氯离子;
ii)对所述废水进行预处理,以除去所述不溶性钙化合物的至少一部分;
iii)传送所产生的所述预处理废水通过纳米过滤(NF)膜,以产生:
a)NF废弃物流,其包含富集浓度的钙离子,和
b)NF渗透液流,其包含浓度减小的钙离子;以及
iv)使得自步骤iii)的所述NF废弃物流的至少一部分在步骤i)中再利用。
2.根据权利要求1所述的方法,其中所述废弃物流包含的钙离子比所述废水多至少10%。
3.根据权利要求1所述的方法,其中对所述废水进行预处理的所述步骤包含以下中的至少一或多个:沉降、化学沉淀和超滤。
4.根据权利要求1所述的方法,其中所述NF渗透液流如下进行后处理:通过逆渗透(RO)膜以产生:
RO废弃物流,其包含富集浓度的单价离子,和
RO渗透液流,其包含浓度减小的单价离子;和对所述RO废弃物流进行蒸发或电解。
5.根据权利要求4所述的方法,其中所述RO渗透液流的至少一部分在步骤i)中再利用。
6.根据权利要求1所述的方法,其中所述烟道气包含氮氧化物,且其中作为单独步骤的一部分,从所述烟道气中除去所述氮氧化物的至少一部分。
7.根据权利要求1所述的方法,其中所述烟道气包含氮氧化物,且其中在步骤i)之前,从所述烟道气中除去所述氮氧化物的至少一部分。
CN201480082801.5A 2014-11-13 2014-11-13 烟道气脱硫废水的处理 Pending CN107073394A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/090987 WO2016074190A1 (en) 2014-11-13 2014-11-13 Treatment of flue gas desulfurization wastewater

Publications (1)

Publication Number Publication Date
CN107073394A true CN107073394A (zh) 2017-08-18

Family

ID=55953588

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201480082801.5A Pending CN107073394A (zh) 2014-11-13 2014-11-13 烟道气脱硫废水的处理

Country Status (2)

Country Link
CN (1) CN107073394A (zh)
WO (1) WO2016074190A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019055211A1 (en) 2017-09-12 2019-03-21 General Electric Company SYSTEM AND METHOD FOR OPTIMIZED OPERATION OF A DESULFURIZATION UNIT OF COMBUSTION GAS
CN107473486B (zh) * 2017-09-26 2020-12-29 江苏中圣高科技产业有限公司 一种脱硫废水的联合处理方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101306885A (zh) * 2008-06-30 2008-11-19 南京工业大学 一种焦化含硫废水的资源化处理方法
CN103979729A (zh) * 2014-05-30 2014-08-13 西安西热水务环保有限公司 一种脱硫废水循环利用及零排放系统及方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61222524A (ja) * 1985-03-28 1986-10-03 Fuji Sekiyu Kk 湿式排煙脱硫法
JP2944939B2 (ja) * 1996-09-12 1999-09-06 川崎重工業株式会社 脱硫排水の処理方法及び装置
JPH10137540A (ja) * 1996-11-13 1998-05-26 Mitsui Mining Co Ltd 排煙脱硫装置からの排水処理方法
CN1820826A (zh) * 2005-02-20 2006-08-23 广州舒创有限公司 气动乳化电石泥脱硫法
IL177874A0 (en) * 2006-09-04 2006-12-31 Clue As A process for the absorption of sulfur dioxide from flue gas
CN100518893C (zh) * 2007-03-26 2009-07-29 中南大学 一种含钒石煤钠化焙烧烟气净化方法
CN101585514A (zh) * 2009-03-13 2009-11-25 云南大学 采用膜技术从液相催化氧化-生物法烟气脱硫副产稀酸液中回收硫酸的方法
CN103212290B (zh) * 2013-04-28 2014-11-26 安徽省利特环保技术有限公司 一种基于纳米催化脱硫技术的滤袋及其制作方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101306885A (zh) * 2008-06-30 2008-11-19 南京工业大学 一种焦化含硫废水的资源化处理方法
CN103979729A (zh) * 2014-05-30 2014-08-13 西安西热水务环保有限公司 一种脱硫废水循环利用及零排放系统及方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
金明柏: "《水处理系统设计实务》", 31 December 2010 *

Also Published As

Publication number Publication date
WO2016074190A1 (en) 2016-05-19

Similar Documents

Publication Publication Date Title
CN104843927B (zh) 脱硫废水零排放工艺及系统
EP1140705B1 (en) Method and apparatus for microfiltration
CN104355473B (zh) 一种采用电渗析技术进行电厂脱硫废水脱盐零排放处理的方法
US8101083B2 (en) Pre-treatment reverse osmosis water recovery method for brine retentate metals removal
CN105110521B (zh) 一种脱硫废水的循环利用方法
CN105540960B (zh) 石灰石/石灰-石膏法烟气脱硫废水的处理方法以及系统
US20100018921A1 (en) Reverse osmosis water recover method
CN105621776B (zh) 一种燃煤锅炉烟气湿法脱硫废水的处理方法
CN105110538B (zh) 一种脱硫废水零排放工艺
US20170334752A1 (en) Sulfate reduction in flue gas desulfurization system by barium precipitation
CN107311373B (zh) 一种电厂脱硫废水的零排放处理工艺和装置
CN101157504B (zh) 利用尾气中so2、co2软化硬水的工艺
CN205575837U (zh) 一种石灰石/石灰-石膏法烟气脱硫废水的处理系统
CN108623055A (zh) 一种制浆造纸废水零排放软化工艺及装置
CN107073394A (zh) 烟道气脱硫废水的处理
CN107500450A (zh) 脱硫废水零排处理方法
CN205473148U (zh) 一种电厂脱硫废水的零排放处理系统
CN106315910A (zh) 一种钛白废水的处理方法
CN112573720A (zh) 一种热电厂脱硫废水零排放系统及方法
WO2014125269A1 (en) Processes for desalination and purification by forward osmosis
CN109850996A (zh) 一种电厂脱硫废水的处理方法
JP2001062247A (ja) 排煙脱硫方法および排煙脱硫システム
CN206901956U (zh) 燃机电厂废水零排放处理装置
CN110342674A (zh) 一种高盐废水两级浓缩蒸发预处理系统和处理方法
CN104478133B (zh) 钠床再生废液循环利用方法及系统

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20170818

RJ01 Rejection of invention patent application after publication