CN204265576U - A kind of sea water desalinization strong brine zero discharge treatment device - Google Patents

A kind of sea water desalinization strong brine zero discharge treatment device Download PDF

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Publication number
CN204265576U
CN204265576U CN201420623193.1U CN201420623193U CN204265576U CN 204265576 U CN204265576 U CN 204265576U CN 201420623193 U CN201420623193 U CN 201420623193U CN 204265576 U CN204265576 U CN 204265576U
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China
Prior art keywords
sea water
brine
light salt
connects
electrodialysis
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Expired - Fee Related
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CN201420623193.1U
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Chinese (zh)
Inventor
张仂
孟兴智
赵淑芳
颜亚盟
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CNSIC ENGINEERING TECHNOLOGY RESEARCH INSTITUTE Co Ltd
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CNSIC ENGINEERING TECHNOLOGY RESEARCH INSTITUTE Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy

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  • Water Treatment By Electricity Or Magnetism (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The utility model relates to a kind of sea water desalinization strong brine discharging processing device.Be made up of sea water desalinating plant, electrodialysis unit and electrodialysis light salt brine treatment unit; Sea water desalinating plant is provided with sea water desaltination suction culvert, the saliferous strong brine tube outlet of sea water desalinating plant connects strong brine dashpot; Dashpot connects the fresh feed pump of electrodialysis unit, and electrodialysis unit arranges the outer row pipeline of saturated brine, and the light salt brine outlet of electrodialysis unit connects light salt brine dashpot; The fresh feed pump of light salt brine dashpot connection handling device; Fresh feed pump connects the reaction unit of light salt brine treatment unit, and reacting material outlet connects sedimentation device, and the light salt brine of sedimentation device returns sea water desalinating plant through the circulation of circulating backwater pipeline.Adopt batch production mode to carry out emission treatment to sea water desalinization strong brine, all sea water desalinization strong brines are all recovered utilization, do not discharge sewage with high salinity.In seawater, the rate of recovery of fresh water can reach more than 75%.

Description

A kind of sea water desalinization strong brine zero discharge treatment device
Technical field
The present invention relates to sea water desaltination and calculate field, particularly relate to a kind of sea water desalinization strong brine zero discharge treatment device.
Background technology
Along with the development of sea water desaltination industry, desalination by-product strong brine emission problem becomes more and more outstanding.Current sea water desalinization strong brine process is mainly adopted in two ways, and a kind of mode directly enters ocean, and second is utilize Tan Shai soil, local salt pan directly to carry out a day solar salt shan.But along with the continuous increase of sea water desaltination scale, enter marine strong brine constantly to increase, offshore pollution will be inevitable, on the other hand, along with strong brine quantity discharged continues to increase, Land Demand is shone on the beach of saltern also constantly to be increased, and with development aspect, coastland contradiction, this seriously constrains the development of sea water desaltination industry.Therefore, adopt a kind of novel sea water desalinization strong brine Zero emission device, when not a large amount of land occupation area, the amount of drawing of seawater resources is reduced by improving sea water desaltination water rate, realize the zero release of sea water desalinization strong brine, this is the inevitable choice solving sea water desaltination restraining factors.
Summary of the invention
For above demand, propose a kind of sea water desalinization strong brine zero discharge treatment device, the sealing and circulating loop that its core is made up of sea water desalinating plant, electrodialysis unit and electrodialysis light salt brine treatment unit.
Technical scheme of the present invention is as follows:
A kind of sea water desalinization strong brine Zero emission device of the present invention, is made up of sea water desalinating plant, electrodialysis unit and electrodialysis light salt brine treatment unit; Sea water desalinating plant is provided with sea water desaltination suction culvert, the saliferous strong brine tube outlet of sea water desalinating plant connects strong brine dashpot; Dashpot connects the fresh feed pump of electrodialysis unit, and electrodialysis unit arranges the outer row pipeline of saturated brine, and the light salt brine outlet of electrodialysis unit connects light salt brine dashpot; The fresh feed pump of light salt brine dashpot connection handling device; Fresh feed pump connects the reaction unit of light salt brine treatment unit, and reacting material outlet connects sedimentation device, and the light salt brine of sedimentation device returns sea water desalinating plant through the circulation of circulating backwater pipeline.
As shown in Figure 1: all light salt brines that electrodialysis unit (2) is discharged, by electrodialysis light salt brine treatment unit (3), reclaim by the present invention, again fresh water is produced for sea water desalinating plant (1).The nearly saturated brine that electrodialysis unit (2) is discharged may be used for evaporating salt manufacturing.Adopt batch production mode to carry out zero discharge treatment to sea water desalinization strong brine, make sea water desalinization strong brine all be recovered process.
Adopt batch production mode to carry out zero discharge treatment to sea water desalinization strong brine, all sea water desalinization strong brines are all recovered utilization, do not discharge sewage with high salinity.
By electrodialysis light salt brine treatment unit (3), all light salt brines that electrodialysis unit (2) is discharged are reclaimed, again produce fresh water for sea water desalinating plant (1).The nearly saturated brine that electrodialysis unit (2) is discharged may be used for evaporating salt manufacturing.
Adopt batch production mode to carry out zero discharge treatment to sea water desalinization strong brine, all sea water desalinization strong brines are all recovered utilization, do not discharge sewage with high salinity.In seawater, the rate of recovery of fresh water can reach more than 75%.
Accompanying drawing explanation
Fig. 1: sea water desalinization strong brine zero discharge treatment setting drawing.
In figure: 1 sea water desalinating plant; 2, electrodialysis unit; 3, electrodialysis light salt brine treatment unit; 4 seawater feeding pipes; 5, sea water desalinization strong brine; 6, fresh water; 7, sea water desalinization strong brine dashpot; 8, electrodialysis unit fresh feed pump; 9, the nearly saturated bittern of electrodialysis; 10, the nearly saturated bittern discharge pipe of electrodialysis (devaporation salt manufacturing); 11, electrodialysis light salt brine; 12, light salt brine dashpot; 13, light salt brine treatment unit fresh feed pump; 14, reaction unit; 15, sedimentation device; 16, circulating backwater (pipeline).
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
As shown in Figure 1: be made up of sea water desalinating plant, electrodialysis unit and electrodialysis light salt brine treatment unit; Sea water desalinating plant (1) is provided with sea water desaltination suction culvert (4), saliferous strong brine (5) tube outlet of sea water desalinating plant connects strong brine dashpot (7); Dashpot (7) connects the fresh feed pump (8) of electrodialysis unit, electrodialysis unit (2) arranges the outer row pipeline (10) of saturated brine, and the light salt brine outlet of electrodialysis unit connects light salt brine dashpot (12); The fresh feed pump (13) of light salt brine dashpot (12) connection handling device (3); Fresh feed pump (13) connects the reaction unit (14) of light salt brine treatment unit (3), reacting material outlet connects sedimentation device (15), and the light salt brine of sedimentation device (15) returns sea water desalinating plant (1) through circulating backwater pipeline (16) circulation.
Illustrate that effect is as follows:
Certain desalimtor, reverse osmosis unit is adopted to carry out sea water desaltination, its charging concentration of seawater is 3.2 ° of Be ', after pre-treatment, seawater containing salt component is mainly: sodium ion 10g/l, calcium ion 0.5g/l, magnesium ion 1.18g/l, potassium ion 0.38g/l, chlorion 18.5g/l, sulfate ion 2.35g/l, inlet amount is 550m 3/ h, enters sea water desalinating plant 1 through seawater feeding pipe 4.After sea water desalinating plant 1 processes, discharge fresh water 216m through fresh water outlet pipeline 3/ h, discharges 5 ° of Be ' strong brine 334m through sea water desalinization strong brine discharge pipe 5 3/ h, it is sodium ion 18.1g/l containing salt component, calcium ion 0.64g/l, magnesium ion 2.06g/l, potassium ion 0.66g/l, chlorion 31.2g/l, sulfate radical 5.8g/l.
Sea water desalinization strong brine enters electrodialysis unit 2, obtains light salt brine 11 and nearly saturated bittern 9.Wherein nearly saturated bittern growing amount is 37.5m 3/ h, it is sodium ions content 79.8g/l containing salt component, calcium ion 1.3g/l, magnesium ion 1.25g/l, potassium ion 3.6g/l, chlorion 131.8g/l, sulfate ion 0.46g/l.Light salt brine growing amount is 296.5m 3/ h, it is sodium ions content 10.2g/l containing salt component, calcium ion 0.56g/l, magnesium ion 2.12g/l, potassium ion 0.28g/l, chlorion 18.4g/l, sulfate ion 6.5g/l.Nearly saturated bittern can be used for evaporating salt manufacturing through discharge tube 10, and electrodialysis light salt brine 11, after dashpot 12, enters electrodialysis light salt brine treatment unit 14 through pump 13.
In electrodialysis light salt brine treatment unit 14, through chemical Treatment, calcium magnesium, ion equal size in electrodialysis light salt brine 11 are reduced, obtains 290m 3the circulating backwater 16 of/h, its containing salt component be sodium ions content 10.1g/l, calcium ion lower than 0.01g/l, magnesium ion lower than 0.01g/l, potassium ion 0.27g/l, chlorion 17.4g/l, sulfate ion 2.5g/l.This circulating backwater is lower than seawater component containing salt component, again for seawater desalination system, can improve sea water desaltination water rate, and achieve the zero release of sea water desalinization strong brine.

Claims (1)

1. a sea water desalinization strong brine zero discharge treatment device, is characterized in that being made up of sea water desalinating plant, electrodialysis unit and electrodialysis light salt brine treatment unit; Sea water desalinating plant is provided with sea water desaltination suction culvert, the saliferous strong brine tube outlet of sea water desalinating plant connects strong brine dashpot; Dashpot connects the fresh feed pump of electrodialysis unit, and electrodialysis unit arranges the outer row pipeline of saturated brine, and the light salt brine outlet of electrodialysis unit connects light salt brine dashpot; The fresh feed pump of light salt brine dashpot connection handling device; Fresh feed pump connects the reaction unit of light salt brine treatment unit, and reacting material outlet connects sedimentation device, and the light salt brine of sedimentation device returns sea water desalinating plant through the circulation of circulating backwater pipeline.
CN201420623193.1U 2014-10-26 2014-10-26 A kind of sea water desalinization strong brine zero discharge treatment device Expired - Fee Related CN204265576U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104370396A (en) * 2014-10-26 2015-02-25 中盐工程技术研究院有限公司 Zero-emission treatment method and device for desalinating strong brine by using seawater
CN106349123A (en) * 2016-08-25 2017-01-25 江苏德玛膜科技有限公司 Method for separating taurine in taurine crude product mother solution
CN107473342A (en) * 2017-09-22 2017-12-15 李海铱 Using electrical potential difference separation sodium, the electron ion such as chlorine desalinizes seawater and salt making apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104370396A (en) * 2014-10-26 2015-02-25 中盐工程技术研究院有限公司 Zero-emission treatment method and device for desalinating strong brine by using seawater
CN104370396B (en) * 2014-10-26 2016-05-18 中盐工程技术研究院有限公司 A kind of sea water desalinization strong brine Zero discharge treatment method and device
CN106349123A (en) * 2016-08-25 2017-01-25 江苏德玛膜科技有限公司 Method for separating taurine in taurine crude product mother solution
CN107473342A (en) * 2017-09-22 2017-12-15 李海铱 Using electrical potential difference separation sodium, the electron ion such as chlorine desalinizes seawater and salt making apparatus

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