CN107651799A - A kind of high organic wastewater hotting mask coupling of high salt divides salt zero-discharge treatment system - Google Patents
A kind of high organic wastewater hotting mask coupling of high salt divides salt zero-discharge treatment system Download PDFInfo
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- CN107651799A CN107651799A CN201710999331.4A CN201710999331A CN107651799A CN 107651799 A CN107651799 A CN 107651799A CN 201710999331 A CN201710999331 A CN 201710999331A CN 107651799 A CN107651799 A CN 107651799A
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- 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
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/14—Purification
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/16—Purification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
-
- 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
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- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
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- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
A kind of high organic wastewater hotting mask coupling of high salt divides salt zero-discharge treatment system, the high organic wastewater inlet pipeline of high salt is communicated to salt solution membrane separator after First Heat Exchanger and the second heat exchanger, the first crystallizer is communicated to again, mixed salt harmless treatment device is communicated to again, then is sequentially communicated and is communicated to nanofiltration device after mixed salt wash mill and mixed salt filter；The sodium chloride solution outlet of nanofiltration device is communicated to sodium chloride salt retracting device to the second crystallizer；The metabisulfite solution outlet of nanofiltration device is communicated to sodium sulfate salt retracting device to the 3rd crystallizer.The present invention makes full use of the waste heat of the high organic wastewater of high salt, form hotting mask coupling and divide salt zero-discharge treatment system and handling process, only salt solution membrane separator, crystallizer, mixed salt harmless treatment device, nanofiltration divide salt system four main technique units, and flow is succinct, easy to operate, not add chemical agent, heat utilization ratio height, small accommodation area, operating cost low.
Description
Technical field
The invention belongs to field of waste water treatment, and in particular to a kind of hotting mask coupling for the high organic wastewater of high salt divides salt
Zero-discharge treatment system.
Background technology
The waste water that the industries such as petrochemical industry, coal chemical industry, metallurgy, pharmacy, printing and dyeing, papermaking are discharged in process of production has height
The characteristics of salt, high organic matter, for usual salt content in more than 3000mg/L, COD is in more than 2000mg/L, and temperature is higher, contains
There is the poisonous and hazardous organic matter such as a large amount of aromatic compounds, heterocyclic compound, hydrocarbon compound, even across processing with heel row
Be put into water body still can cause potential safety hazard to water environment.Therefore many local governments require that this kind of enterprise must accomplish zero liquid
Body discharges, abbreviation zero-emission.
Heat exchange cooling processing, pretreatment, life are generally comprised to the Zero-discharge treating process of the high organic wastewater of high salt at present
The series of process unit such as change processing, advanced oxidation, sand filtration, ultrafiltration, counter-infiltration, concentrated water caused by system to also be carried out in addition
Oxidation, softening and concentration, finally form solid salt using evaporative crystallization technique.It is superfluous flow to be present in existing Zero-discharge treating process
Length, complex operation, stability are poor, energy reagent consumption is high, floor space is big, operating cost is high, solid salt is because of content of organics
It is high and the shortcomings of be difficult to disposal, it is difficult to operation steady in a long-term, application are restricted.
The content of the invention
It is an object of the invention to design a kind of high organic wastewater hotting mask coupling of new high salt to divide salt zero discharge treatment
System, solve the above problems.
To achieve these goals, the technical solution adopted by the present invention is as follows：
A kind of high organic wastewater hotting mask coupling of high salt divides salt zero-discharge treatment system, including First Heat Exchanger, second changes
Hot device, salt solution membrane separator, mixed salt harmless treatment device, main steam range, flue gas house steward, the first crystallizer, the second crystallizer,
Three crystallizers, mixed salt wash mill, mixed salt filter and nanofiltration device；
The mixed salt harmless treatment device includes the first heating pipeline, the second heating pipeline and the 3rd heating pipeline；
The high organic wastewater inlet pipeline of high salt is communicated to institute after the First Heat Exchanger and second heat exchanger
The water inlet of salt solution membrane separator is stated, the delivery port of the salt solution membrane separator is communicated to the water inlet of the first heating pipeline
Mouthful, the delivery port of the first heating pipeline is communicated to the water inlet of first crystallizer；The crystallization of first crystallizer
Salt outlet is to the mixed salt import of the mixed salt harmless treatment device, and the mixed salt outlet of the mixed salt harmless treatment device is successively
Connection is communicated to the water inlet of the nanofiltration device after the mixed salt wash mill and the mixed salt filter；
To the water inlet of the described second heating pipeline, described second adds the sodium chloride solution outlet of the nanofiltration device
The delivery port of pipe line is communicated to the water inlet of second crystallizer；The crystal salt outlet of second crystallizer is to chlorine
Change sodium salt retracting device；The metabisulfite solution outlet of the nanofiltration device to the described 3rd heating pipeline water inlet, institute
The delivery port for stating the 3rd heating pipeline is communicated to the water inlet of the 3rd crystallizer；The crystal salt outlet of 3rd crystallizer
It is communicated to sodium sulfate salt retracting device
The steam (vapor) outlet of the salt solution membrane separator is communicated to main steam range, first crystallizer, second crystallization
The steam (vapor) outlet of device and the 3rd crystallizer is also communicated to the main steam range, and the main steam range is changed by described first
Condensation water recovery system is communicated to after hot device；
The exhanst gas outlet of the mixed salt harmless treatment device is respectively by the heater of the salt solution membrane separator, described the
It is communicated to again after the heater of the heater of one crystallizer, the heater of second crystallizer and the 3rd crystallizer described
Flue gas house steward, the flue gas house steward are communicated to low-temperature flue gas recovery system after second heat exchanger.
Concentrated water EGR is provided with the salt solution membrane separator.
The concentrated water EGR is provided with the filter for being used for filtering oils and suspension.
The heater of the mixed salt harmless treatment device is electric heater unit or gas-operated thermal bath facility.
The salt solution membrane separator includes hydrophobic film, and the steam (vapor) outlet of the salt solution membrane separator is arranged on described hydrophobic
Property film steam side, the delivery port of the water inlet of the salt solution membrane separator and the salt solution membrane separator is arranged at described
The salt solution side of hydrophobic film.
Also include condenser, the main steam range after the First Heat Exchanger connects again after first passing through the condenser
Lead to the condensation water recovery system.
The high organic wastewater inlet pipeline of high salt is provided with the high organic wastewater filter of high salt.
The so-called high organic wastewater of high salt of the present invention refers to：Salt concentration is more than 3000mg/L, concentration containing COD is more than
2000mg/L waste water.
The so-called sodium chloride salt retracting device of the present invention refers to that all can reclaim, handle, the dress using sodium chloride salt
Put, be not limited to any specific form.The so-called sodium sulfate salt retracting device of the present invention refers to, all can reclaim, handle,
Using the device of sodium sulfate salt, any specific form is not limited to.
The so-called condensation water recovery system of the present invention refers to that all can reclaim, handle, the system using condensed water, no
It is confined to any specific form.
Beneficial effects of the present invention can be summarized as follows：
(1) the invention provides a kind of high organic wastewater hotting mask coupling of high salt to divide salt zero-discharge treatment system, realizes
The zero liquid discharge of the high organic wastewater of high salt, forms sodium chloride salt and sodium sulfate salt without organic matter, can be used as industrial original
Material.
(2) after water vapour condensation caused by system, production technology water or circulating cooling system moisturizing can be used as, production water returns
Yield is up to more than 95%.
(3) total system only has four salt solution membrane separator, crystallizer, mixed salt harmless treatment device, nanofiltration point salt system masters
Want technique unit, flow is succinct, small accommodation area, it is easy to operate, can run steadily in the long term.
(4) system is not required to cool to the high organic wastewater of high salt, is handled using the waste heat of raw water, sets heat recovery
System, the waste heat of water vapour caused by system and high-temperature flue gas is made full use of to be used to heat feed liquid, mixed salt harmless treatment device is set
Standby indoor design has heat exchange sleeve, makes full use of residual heat of reaction caused by organic matter burning, whole system heat profit in solid salt
It is high with rate, it is energy-saving.
(5) chemical agent is not added when running, non-secondary pollution, operating cost is low.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Wherein：1 First Heat Exchanger；2 second heat exchangers；3 salt solution membrane separators；4 mixed salt harmless treatment devices；5 first knots
Brilliant device；6 second crystallizers；7 the 3rd crystallizers；8 main steam ranges；9 flue gas house stewards；8 heating pipelines；10 condensation water recovery systems；
The heater of 11 salt solution membrane separators；12 concentrated water EGRs；The heater of 13 first crystallizers；The heating of 14 second crystallizers
Device；The heater of 15 the 3rd crystallizers；16 condensers；The high organic wastewater filter of 17 high salts；18 low-temperature flue gas recovery systems；
19 oils and suspended filter；20 electrical heating or gas-operated thermal bath facility；21 first heating pipelines；22 second heating pipelines；23
3rd heating pipeline；24 mixed salt wash mills；25 mixed salt filters；26 nanofiltration devices；The high organic wastewater of 41 high salts；42 water
Steam；43 high-temperature flue gas；44 mixed salts；45 sodium chloride solutions；46 metabisulfite solutions；47 sodium chloride salt retracting devices；48 sodium sulphate
Salt retracting device.
Embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect are more clearly understood, below in conjunction with
Drawings and Examples, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein only to
The present invention is explained, is not intended to limit the present invention.
A kind of high organic wastewater hotting mask coupling of high salt as shown in Figure 1 divides salt zero-discharge treatment system, including first changes
Hot device 1, the second heat exchanger 2, salt solution membrane separator 3, mixed salt harmless treatment device 4, main steam range 8, flue gas house steward 9, the first knot
Brilliant device 5, the second crystallizer 6, the 3rd crystallizer 7, mixed salt wash mill 24, mixed salt filter 25 and nanofiltration device 26；
The mixed salt harmless treatment device includes the first heating pipeline 21, second and heats the heating pipeline of pipeline 22 and the 3rd
23；
The high organic wastewater inlet pipeline of high salt is communicated to after the First Heat Exchanger 1 and second heat exchanger 2
The water inlet of the salt solution membrane separator 3, the delivery port of the salt solution membrane separator 3 are communicated to the first heating pipeline 21
Water inlet, the delivery port of the first heating pipeline 21 are communicated to the water inlet of first crystallizer 5；First crystallizer
5 crystal salt outlet to the mixed salt harmless treatment device 4 mixed salt import, the mixed salt harmless treatment device 4 it is mixed
Salt outlet is sequentially communicated is communicated to the nanofiltration device after the mixed salt wash mill 24 and the mixed salt filter 25
26 water inlet；
The sodium chloride solution outlet of the nanofiltration device 26 to the described second heating pipeline 22 water inlet, described the
The delivery port of two heating pipelines 22 is communicated to the water inlet of second crystallizer 6；The crystal salt outlet of second crystallizer 6
It is communicated to sodium chloride salt retracting device 47；The metabisulfite solution outlet of the nanofiltration device 26 heats pipeline to the described 3rd
23 water inlet, the delivery port of the 3rd heating pipeline 23 are communicated to the water inlet of the 3rd crystallizer 7；3rd knot
The crystal salt outlet of brilliant device 7 is to sodium sulfate salt retracting device 48.
The steam (vapor) outlet of the salt solution membrane separator 3 is communicated to main steam range 8, first crystallizer 5, second knot
The steam (vapor) outlet of brilliant device 6 and the 3rd crystallizer 7 is also communicated to the main steam range 8, described in the main steam range 8 is passed through
Condensation water recovery system 10 is communicated to after First Heat Exchanger 1；
The exhanst gas outlet of the mixed salt harmless treatment device 4 is respectively by the heater 11 of the salt solution membrane separator, institute
State after the heater 15 of the heater 13 of the first crystallizer, the heater 14 of second crystallizer and the 3rd crystallizer again
The flue gas house steward 9 is communicated to, the flue gas house steward 9 is communicated to low-temperature flue gas recovery system after second heat exchanger 2
18。
In more preferred embodiment, concentrated water EGR 12 is provided with the salt solution membrane separator.
In more preferred embodiment, the concentrated water EGR 12, which is provided with, to be used to filter oils and the mistake of suspension
Filter 19.
In more preferred embodiment, the heater of the mixed salt harmless treatment device is electric heater unit or combustion gas
Heater.
In more preferred embodiment, the salt solution membrane separator 3 includes hydrophobic film, the salt solution membrane separator 3
Steam (vapor) outlet be arranged on the steam side of the hydrophobic film, the water inlet of the salt solution membrane separator 3 and the brine film
The delivery port of separator 3 is arranged at the salt solution side of the hydrophobic film.
In more preferred embodiment, the high organic wastewater hotting mask coupling of high salt divides salt zero-discharge treatment system also
Including condenser 16, the main steam range 8 after the First Heat Exchanger 1 is communicated to again after first passing through the condenser 16
The condensation water recovery system 10.
In more preferred embodiment, the high organic wastewater inlet pipeline of high salt is provided with the high organic wastewater of high salt
Filter 17.
In some specific embodiment, the high organic wastewater hotting mask coupling of high salt divides salt zero-discharge treatment system and processing
Technique comprises the following steps：
(1) salt solution membrane separator 3：The high organic wastewater 41 of the higher high salt of temperature enters salt solution membrane separator after filtering
3, spray on hydrophobic film surface, in the presence of the water vapor pressure difference of film both sides, steam permeable membrane hole enters on the inside of film, by
The condensed condensation of device 16 of water vapour pipeline collection forms the good desalted water of water quality and is back to production system.It is hydrophobic due to film
Property, the waste water on film surface can not pass through film into film inner side, the strong brine rich in organic matter be formed on the outside of film, so as to realize
The salt solution separation of waste water.
To improve the efficiency of salt solution separation, and the pollution on film surface is prevented, concentrated water is set outside salt solution membrane separator 3
EGR 12, by film surface circulation of the waste water by pump inside salt solution membrane separator 3, improve the effect of steam permeable membrane
Rate, while the water-carrying capacity circulated forms souring on film surface, prevents film by contaminated wastewater and blocking.In addition, cyclic part
Concentrated water acted on via the other filter of oils and suspended filter 19, remove oil removal and oils, further diaphragm is not dirty
Dye and blocking.
(2) first crystallizers 5：A certain degree of concentrated water is concentrated to through pump lifting changing by mixed salt harmless treatment device 4
After thermal sleeve heating, into the first crystallizer 5, supersaturated solution is formed, water vapour enters collecting pipe by the top of the first crystallizer 5
Road, converge with the water vapour of salt solution membrane separator 3, the condensed condensation of device 16 forms the good desalted water of water quality and is back to production system
System.Remain solute of the dope in 5 interior precipitation crystal of the first crystallizer, dope to deposit in plane of crystal, crystal is gradually grown up, shape
Into the solid salt containing organic matter, the first crystallizer 5 is discharged.
(3) mixed salt harmless treatment device 4：Solid salt containing organic matter is sent into mixed salt harmless treatment device, using electrical heating
Or gas heating is burned, after the organic matter in solid salt is incinerated, the mixed salt 44 of predominantly inorganic constituents is formed.Organic matter
Caused high-temperature flue gas 43 is sent into the gas recovery system of enterprise after heat recovery system exchanges heat after burning.
The device interior of mixed salt harmless treatment device 4 is designed with 3 sets of heat exchange sleeves, it is therefore intended that utilizes organic matter in solid salt
Residual heat of reaction caused by burning, heat and the concentrated water of the first crystallizer 5 is expelled to by salt solution membrane separator 3, subsequent nano-filtration divides salt system
The sodium chloride solution 45 and metabisulfite solution 46 of system.
(4) nanofiltration divides salt system：Mixed salt 44 without organic matter is washed based on sodium chloride and sodium sulphate with a small amount of clear water
And after filtering, a point salt is carried out into nanofiltration system.Because NF membrane only allows monovalent salt to pass through under pressure, divalent salts quilt
Concentrated water side is trapped in, therefore after nanofiltration membrane treatment, salting liquid is divided into sodium chloride solution 45 and metabisulfite solution 46.
Sodium chloride solution 45 is after the heat exchange sleeve heating of mixed salt harmless treatment device 4, into the second crystallizer 6, shape
Into supersaturated solution, water vapour enters collection conduit by the top of the second crystallizer 6, with the crystallizer 5 of salt solution membrane separator 3 and first
Water vapour converge, the condensation of condensed device 16 forms the good desalted water of water quality and is back to production system.Dope is remained second
Separate out crystal in crystallizer 6, the solute in dope is deposited in plane of crystal, and crystal is gradually grown up, formed based on sodium chloride
Solid salt, the second crystallizer 6 is discharged, can be used as the raw material of industry.
Metabisulfite solution 46 is after the heat exchange sleeve heating of mixed salt harmless treatment device 4, into the 3rd crystallizer 7, shape
Into supersaturated solution, water vapour enters collection conduit by the top of the 3rd crystallizer 7, with salt solution membrane separator 3, the first crystallizer 5
Converge with the water vapour of the second crystallizer 6, the condensed condensation of device 16 forms the good desalted water of water quality and is back to production system.It is residual
Stay dope to separate out crystal in the 3rd crystallizer 7, the solute in dope is deposited in plane of crystal, and crystal is gradually grown up, formed with
Solid salt based on sodium sulphate, the 3rd crystallizer 7 is discharged, can be used as the raw material of industry.
(5) heat recovery system：The system is the affiliated facility of main process system, is made up of heat exchanger and pipeline, mainly
The heat unnecessary for recycling system.Wherein：
Salt solution membrane separator 3, the first crystallizer 5, the second crystallizer 6 and high-temperature water vapor caused by the 3rd crystallizer 7 pass through
After pipeline is collected, exchanged heat in the raw water of First Heat Exchanger 1 and the high organic wastewater 41 of high salt, it is therefore intended that utilize the remaining of water vapour
Heat, improves the temperature of raw water, while the steam cooling that feeds water is easy to condense.
Mixed salt harmless treatment device 4 burn organic matter after caused high-temperature flue gas 43 after pipeline is collected, respectively with salt solution
The residual dope of the concentrated water of membrane separator 3 and the first crystallizer 5, the second crystallizer 6 and the 3rd crystallizer 7 exchanges heat, and finally exists
The raw water of second heat exchanger 2 and the high organic wastewater 41 of high salt exchanges heat, it is therefore intended that using the waste heat of high-temperature flue gas 43, improve with
The temperature of upper five kinds of feed liquids, while cool to high-temperature flue gas 43.
The present invention makes full use of the waste heat of the high organic wastewater of high salt, formed hotting mask coupling divide salt zero-discharge treatment system and
Handling process.Total system only has salt solution membrane separator, crystallizer, mixed salt harmless treatment device, nanofiltration point salt system four main
Technique unit, flow is succinct, easy to operate, not add chemical agent, heat utilization ratio height, small accommodation area, operating cost low,
Sodium chloride salt and sodium sulfate salt without organic matter are formed, can be used as the raw material of industry, can steadily in the long term run, have a wide range of application.
The present invention is described in detail above by specific and preferred embodiment, but those skilled in the art should be bright
In vain, the invention is not limited in embodiment described above, within the spirit and principles of the invention, any modification for being made,
Equivalent substitution etc., should be included in the scope of the protection.
Claims (7)
1. a kind of high organic wastewater hotting mask coupling of high salt divides salt zero-discharge treatment system, it is characterised in that：Including the first heat exchange
Device, the second heat exchanger, salt solution membrane separator, mixed salt harmless treatment device, main steam range, flue gas house steward, the first crystallizer, second
Crystallizer, the 3rd crystallizer, mixed salt wash mill, mixed salt filter and nanofiltration device；
The mixed salt harmless treatment device includes the first heating pipeline, the second heating pipeline and the 3rd heating pipeline；
The high organic wastewater inlet pipeline of high salt is communicated to the salt after the First Heat Exchanger and second heat exchanger
The water inlet of moisture film separator, the delivery port of the salt solution membrane separator are communicated to the water inlet of the first heating pipeline, institute
The delivery port for stating the first heating pipeline is communicated to the water inlet of first crystallizer；The crystal salt outlet of first crystallizer
Be communicated to the mixed salt import of the mixed salt harmless treatment device, the mixed salt outlet of the mixed salt harmless treatment device be sequentially communicated through
Cross after the mixed salt wash mill and the mixed salt filter and be communicated to the water inlet of the nanofiltration device；
The sodium chloride solution outlet of the nanofiltration device to described second heating pipeline water inlet, second heating tube
The delivery port on road is communicated to the water inlet of second crystallizer；The crystal salt outlet of second crystallizer is to sodium chloride
Salt retracting device；The metabisulfite solution outlet of the nanofiltration device to the described 3rd heating pipeline water inlet, described the
The delivery port of three heating pipelines is communicated to the water inlet of the 3rd crystallizer；The crystal salt outlet of 3rd crystallizer
To sodium sulfate salt retracting device
The steam (vapor) outlet of the salt solution membrane separator is communicated to main steam range, first crystallizer, second crystallizer and
The steam (vapor) outlet of 3rd crystallizer is also communicated to the main steam range, and the First Heat Exchanger is passed through in the main steam range
After be communicated to condensation water recovery system；
The exhanst gas outlet of the mixed salt harmless treatment device passes through heater, first knot of the salt solution membrane separator respectively
The flue gas is communicated to again after the heater of the heater of brilliant device, the heater of second crystallizer and the 3rd crystallizer
House steward, the flue gas house steward are communicated to low-temperature flue gas recovery system after second heat exchanger.
2. the high organic wastewater hotting mask coupling of high salt according to claim 1 divides salt zero-discharge treatment system, its feature exists
In：Concentrated water EGR is provided with the salt solution membrane separator.
3. the high organic wastewater hotting mask coupling of high salt according to claim 2 divides salt zero-discharge treatment system, its feature exists
In：The concentrated water EGR is provided with the filter for being used for filtering oils and suspension.
4. the high organic wastewater hotting mask coupling of high salt according to claim 1 divides salt zero-discharge treatment system, its feature exists
In：The heater of the mixed salt harmless treatment device is electric heater unit or gas-operated thermal bath facility.
5. the high organic wastewater hotting mask coupling of high salt according to claim 1 divides salt zero-discharge treatment system, its feature exists
In：The salt solution membrane separator includes hydrophobic film, and the steam (vapor) outlet of the salt solution membrane separator is arranged on the hydrophobic film
Steam side, the delivery port of the water inlet of the salt solution membrane separator and the salt solution membrane separator is arranged at described hydrophobic
The salt solution side of property film.
6. the high organic wastewater hotting mask coupling of high salt according to claim 1 divides salt zero-discharge treatment system, its feature exists
In：Also include condenser, the main steam range after the First Heat Exchanger is communicated to again after first passing through the condenser
The condensation water recovery system.
7. the high organic wastewater hotting mask coupling of high salt according to claim 1 divides salt zero-discharge treatment system, its feature exists
In：The high organic wastewater inlet pipeline of high salt is provided with the high organic wastewater filter of high salt.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710999331.4A CN107651799B (en) | 2017-10-24 | 2017-10-24 | High-salinity high-organic-matter wastewater thermal membrane coupling salt separation zero-discharge treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710999331.4A CN107651799B (en) | 2017-10-24 | 2017-10-24 | High-salinity high-organic-matter wastewater thermal membrane coupling salt separation zero-discharge treatment system |
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| CN107651799B CN107651799B (en) | 2020-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113634200A (en) * | 2021-08-17 | 2021-11-12 | 南京大学 | Fixed bed hydrothermal gasification reactor and application |
Citations (8)
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| CN113634200A (en) * | 2021-08-17 | 2021-11-12 | 南京大学 | Fixed bed hydrothermal gasification reactor and application |
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