CN108383315A - A kind of waste water reclaiming device of multistage electrically-driven ion film - Google Patents
A kind of waste water reclaiming device of multistage electrically-driven ion film Download PDFInfo
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- CN108383315A CN108383315A CN201810143869.XA CN201810143869A CN108383315A CN 108383315 A CN108383315 A CN 108383315A CN 201810143869 A CN201810143869 A CN 201810143869A CN 108383315 A CN108383315 A CN 108383315A
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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
- 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
- C02F1/041—Treatment of water, waste water, or sewage by heating by distillation or evaporation by means of vapour compression
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
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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
- C02F1/52—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
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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
- 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
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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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
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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
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- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention provides a kind of waste water reclaiming device of multistage electrically-driven ion film,Preliminary minimizing processing is carried out to obtain moderate concentrated water based on middle pressure reverse osmosis unit and high pressure reverse osmosis unit,Based on level-one electric drive film device,Two level electric drive film device and three-level electric drive film device carry out depth concentration to obtain high concentrated water to moderate concentrated water,The moderate concentrated water for pressing reverse osmosis unit and high pressure reverse osmosis unit to be jointly processed by,Level-one electric drive film device uses monovalent cation selective membrane and univalent anion selective membrane to detach the first moderate concentrated water for obtaining the salt that monovalent cation is formed with univalent anion and the second moderate concentrated water containing high-valence cationic and/or high-valence anion,Two level electric drive film device further concentrates the high concentrated water for obtaining high price salt for the first moderate concentrated water,Three-level electric drive film device obtains the high concentrated water of low price salt for further being concentrated to the second moderate concentrated water.The present invention is high to the rate of recovery of water and salt, at low cost.
Description
The present invention is application No. is 201510980910.5, and the applying date is on December 23rd, 2015, and applying type is hair
It is bright, a kind of entitled divisional application of the method for multistage electrically-driven ion film process high slat-containing wastewater of application.
Technical field
The present invention relates to sewage recovery gear field more particularly to a kind of Sewage treatment dresses of multistage electrically-driven ion film
It sets.
Background technology
In recent years, what is generated in the fast development of the industries such as petrochemical industry, electric power, metallurgy, coal chemical industry, industrial processes is anti-
The sewage quantities containing complicated component such as infiltration concentrated water, trade effluent, circulating sewage and some processes draining increase year by year, these are high
The sewage of complicated component how widely paid attention to by final disposal and Utilizing question.
Reverse osmosis technology is for handling waste water development than very fast at present, but still has a large amount of lane after reverse-osmosis treated
Going out cannot be effectively utilized, and the cost for recycling by evaporative crystallization salt contained therein is excessively high.In addition reverse osmosis membrane element
Part is easy to be tended to the inorganic salts calcium of saturation, magnesium compound by organic pollution easily in film surface generation scale problems, anti-to influence
The service life of permeable membrane device reduces filter effect.
Chinese patent CN104355431A discloses setting for a kind of reverse osmosis concentrated water and the recycling of high slat-containing wastewater efficient process
It is standby.The equipment is carried out by two-stage vibration film after tentatively filtering, net by reverse osmosis membrane progress depth-type filtration to obtained fresh water
Change, and the concentrated water that vibrating membrane is obtained by filtration then recycles salt by evaporative crystallization.There is no the measures such as the softening oil removing of waste water, although
Treatment process is shortened, but it is relatively low to the organic efficiency of salt and fresh water.And after two-stage vibration film concentration in concentrated water
The content of water is still higher, and the cost that evaporative crystallization recycles salt is too high.
The patent (documents 1) of Publication No. CN103319042A discloses one kind complicated waste water recycling with high salt and zero-emission
Integrated equipment and technique are put, the Wastewater Pretreatment process of sedimentation or flocculation treatment that carries out, the press mold member in are specifically disclosed
Part and super-pressure membrane component carry out the processing procedure of the Waste water concentrating processing procedure and concentration salt water crystallization recycling of osmosis filtration.
Compared with the present invention, the technological means that separating treatment is carried out using level-one, two level and three-level electrically-driven ion film is not limited
And between concentrated water room and freshwater room pressure difference design parameter.It is unable to reach the technology effect of the salt high-recovery of the present invention
Fruit.
The patent (documents 2) of Publication No. CN103508602A disclose a kind of film integrated with evaporative crystallization it is with high salt
The technique for spending industrial wastewater discharge, specifically discloses the insoluble solid impurities filtered out using ultrafiltration pretreatment in water, and adopt
Concentration is carried out to the penetrating fluid that ultrafiltration pretreatment obtains with barrier film filter device and electrodialysis plant, finally by steaming
Hair crystallization obtains the technological means of salt slurry and salt.Compared with the present invention, lack two steps ro device and three-level electric drive
Ionic membrane sole duty cooperation can not obtain the organic efficiency that the present invention substantially increases fresh water to be classified the technological means of processing waste water
Technique effect.
Invention content
For the deficiency of the prior art, the present invention provides a kind of side of multistage electrically-driven ion film process high slat-containing wastewater
Method, which is characterized in that after the method is by pre-processing high slat-containing wastewater, then carry out osmosis filtration and electric drive from
Sub- membrane separation, expeditiously to recycle desalted water.
The wherein described preprocessing process is by precipitation and/or flocculation adsorption effect to remove the heavy metal in high slat-containing wastewater
Ion, hardness ions and organic substance simultaneously adjust pH, obtain pretreated concentrated water.
The osmosis filtration process is by middle pressure osmosis filtration and high pressure osmosis filtration to described pretreated
Concentrated water carries out preliminary minimizing processing, to obtain moderate concentrated water.
The electrically-driven ion membrane separating process passes through level-one electric drive film process program, two level electric drive film process program
Depth concentration is carried out to the moderate concentrated water with three-level electric drive film process program, high concentrated water is obtained with minimizing, consequently facilitating
Evaporative crystallization recycles salt.
The wherein described level-one electric drive film process process uses monovalent cation selective membrane and univalent anion selective membrane, from
And monovalent cation and univalent anion in moderate concentrated water are isolated, obtain monovalent cation and univalent anion in concentrated water room
The moderate concentrated water of the salt of formation mainly contains high-valence cationic and/or high-valence anion after freshwater room is detached
Moderate concentrated water.
The concentrated water containing high-valence cationic and/or high-valence anion is further by two level electric drive film process program
Concentration obtains the high concentrated water of high price salt, to be evaporated crystallization recycling,
The monovalent cation and the salt concentrated water that univalent anion is formed are further through three-level electric drive film process program
Concentration obtains the high concentrated water of low price salt, to be evaporated crystallization recycling,
The pressure of concentrated water room compares in the wherein described two level electric drive film process program and three-level electric drive film process program
The high 0.1-0.4MPa of pressure of freshwater room.
According to a preferred embodiment, the monovalent cation is sodium ion, and the univalent anion is chlorion,
The high-valence anion is sulfate ion.The low price salt is sodium chloride, and the high price salt is sulfate.The preferred height
Valence salt is sodium sulphate.
The level-one electric drive film process process uses monovalent cation selective membrane and univalent anion selective membrane to detach
It obtains sodium chloride concentrated water and mainly contains the concentrated water of sulfate.
The concentrated water for mainly containing sulfate enters two level electric drive film process program, and further concentration obtains sulfate
High concentrated water, to be directly evaporated crystallization recycling.
The sodium chloride concentrated water enters three-level electric drive film process program, and further concentration obtains the high concentrated water of sodium chloride,
To directly be evaporated crystallization recycling.
The pressure of concentrated water room compares in the wherein described two level electric drive film process program and three-level electric drive film process program
The high 0.2-0.35MPa of pressure of freshwater room.
By the organic matter for pre-processing the scaled hardness ions of removing, heavy metal ion and film easy to pollute so that reverse osmosis
The service life of film in saturating filter device greatly increases, and in addition also mitigates follow-up osmosis filtration and electric drive UF membrane
Burden so that the efficiency of filtering and separation increases, and the rate of recovery of fresh water is improved.
By selective electrically-driven ion UF membrane sodium chloride and sulfate, pass through electric drive film depth concentration decrement later
It is directly evaporated crystallization after change and obtains sodium chloride and sulfate.
It being handled by the multistage minimizing of reverse-osmosis treated and electrically-driven ion film, salt content increases significantly in concentrated water, from
And the burden of evaporative crystallization recycling salt is alleviated, also make fresh water recycling more abundant.
According to a preferred embodiment, the level-one electric drive film device using Neosepta CMS monovalencies sun from
Sub- selective membrane and Neosepta ACS univalent anion selective membranes.
According to a preferred embodiment, the concentrated water room of the two level electric drive film device and three-level electric drive film device
Pressure is above the pressure of freshwater room.
According to a preferred embodiment, the pressure difference of the two level electric drive film device concentrated water room and freshwater room is
0.25MPa-0.35MPa, the concentrated water room of the three-level electric drive film device and the pressure difference of freshwater room are 0.2MPa-0.3MPa,
According to a preferred embodiment, after preprocessed process, the TDS values of the concentrated water are 0.1 × 104mg/L
~1 × 104Mg/L, after osmosis filtration process, the TDS values of the moderate concentrated water are 1 × 104Mg/L~6 × 104Mg/L,
After electrically-driven ion membrane separating process, the TDS values of the high concentrated water are 1 × 105Mg/L~3 × 105mg/L。
According to a preferred embodiment, after preprocessed process, the TDS values of the concentrated water are 0.5 × 104mg/L
~1 × 104Mg/L, after osmosis filtration process, the TDS values of the moderate concentrated water are 5 × 104Mg/L~6 × 104Mg/L,
After electrically-driven ion membrane separating process, the TDS values of the high concentrated water are 1.2 × 105Mg/L~2 × 105mg/L。
According to a preferred embodiment, after level-one electric drive film process, the high concentrated water of the sodium chloride and sulfate
The TDS values of high concentrated water are about 1 × 105Mg/L, after two level electric drive film process and three-level electric drive film process, the chlorination
The TDS values of the high concentrated water of sodium and the high concentrated water of sulfate are about 2 × 105mg/L。
Most water has been recycled by reverse osmosis process, the waste water of high saliferous is made to be concentrated, using two-stage electricity
After driving film process, further recycles fresh water and make waste water advanced concentration, handled by minimizing, to greatly reduce crystallization
The water evaporated is needed when recycling salt, saves energy consumption, and improve the rate of recovery of water and salt.
According to a preferred embodiment, the freshwater room of the two level electric drive film device and three-level electric drive film device
In all have hard porous film support component so that liquid flow homogenize, liquid by porous film support component when occur
Chaotic stream can be mixed, and increase the distance that liquid flows through, and extends the residence time of liquid, separation is made more to fill
Point.Film support component provides support force for electric drive film, keeps the pressure being subject on film more uniform, the infiltration of balance concentrated water room
Pressure, prevents electric drive film to be damaged under stress.
According to a preferred embodiment, film support component is porous stone and/or porous plastics.Preferably, the film
Support component is filled in freshwater room.
According to a preferred embodiment, the effective drainage porosity on film support component surface is more than 50%.
According to a preferred embodiment, the film support component is to pass through the fixed porous fabric of stereoplasm frame.Institute
It states porous fabric to be fixed in freshwater room, be bonded close to electric drive film or with electric drive film.
According to a preferred embodiment, the porous fabric is fabric made of glass fibre and/or flaxen fiber.
According to a preferred embodiment, the hole on the film support component is the irregular hole being interconnected.
According to a preferred embodiment, the fresh water obtained in the electrically-driven ion membrane separating process carries out instead again
Permeation filtration process is further to detach fresh water and salt.The water inlet of electrically-driven ion membrane separating process is during salt content is higher
Spend concentrated water, the fresh water salt content isolated is also slightly higher, by it is carried out again reverse-osmosis treated to increase the rate of recovery of salt.
According to a preferred embodiment, medium pressure osmosis filtration process uses width of flow path for 50mil-
The middle pressure reverse osmosis unit of 70mil, the high pressure osmosis filtration process use width of flow path for the high pressure of 70mil-90mil
Reverse osmosis unit.
According to a preferred embodiment, medium pressure osmosis filtration process uses width of flow path in 65mil
Reverse osmosis unit, the high pressure osmosis filtration process is pressed to use width of flow path for the high pressure reverse osmosis unit of 80mil.Pass through
Big runner design makes osmosis filtration element be not susceptible to fouling or organic fouling.
According to a preferred embodiment, the preprocessing process include by be added pretreating agent carry out precipitation with/
Or after tentatively sludge is discharged in flocculation adsorption, then sludge is discharged by micro-filtration again, to obtain the concentrated water.
According to a preferred embodiment, the preprocessing process includes pre-treatment treatment, micro-filtration processing and tree
Fat is except hard processing, to generate concentrated water.By resin except hardness ions in the waste water of desaturation, the film in reverse osmosis process is prevented
Upper fouling.The preferred micro-filtration processing is using tubular type micro-filtration or immersed microfiltration device.The preferred resin
For cation exchange resin.
According to a preferred embodiment, the preprocessing process is removed by precipitation and/or flocculation adsorption effect to be had
Machine object, silicon ion, magnesium ion and/or calcium ion simultaneously adjust the pH of concentrated water in alkalinity, with prevent in reverse osmosis process fouling membrane and
Fouling.
According to a preferred embodiment, the pretreating agent includes lime, sodium hydroxide, sodium carbonate, polyaluminium
It is one or more in aluminium and polyacrylamide flocculant.
According to a preferred embodiment, the preprocessing process is to sequentially add sodium hydroxide, sodium carbonate, polymerization chlorine
Change aluminium and polyacrylamide flocculant, is reacted next life with heavy metal ion and hardness ions by sodium hydroxide and sodium carbonate
At sediment and the PH of waste water is adjusted, by aluminium polychloride and polyacrylamide flocculant come to sediment and organic matter
Matter carries out coagulation and absorption, gets off under the effect of gravity at sludge settling.The sludge settling is arranged in the bottom of pretreatment unit
Go out, supernatant enters tubular type micro-filtration and further filtered, and removes remaining sediment in waste water, prevents to subsequent
Reverse-osmosis filtering device and electrically-driven ion membrane separation device cause harmful effect.
According to a preferred embodiment, the PH of the pretreatment concentrated water is 7.5-10.0.
According to a preferred embodiment, the PH of the pretreatment concentrated water is 8.0-9.5, and the preferred pretreatment is dense
The PH of water is 8.5-9.0.Alkaline condition can inhibit in the silicon fouling on reverse osmosis membrane surface and the tendency of organic pollution.
According to a preferred embodiment, the moderate concentrated water will pass through before entering electrically-driven ion membrane separating process
Resin is carried out except hard processing, and the preferred resin is cation exchange resin.
According to a preferred embodiment, the sludge forms dewatered sludge by filter-press dehydration, and the water of abjection enters in advance
Processing procedure is handled again.
According to a preferred embodiment, the waste water presses reverse-osmosis filtering device, high pressure reverse osmosis to penetrate in entrance
To pass through cartridge filter before filtering device, level-one electric drive film device and/or two level electric drive film device, prevent sundries to device
Cause harmful effect.
According to a preferred embodiment, medium pressure reverse-osmosis filtering device and/or the high pressure osmosis filtration
The reverse osmosis membrane of device uses aromatic polyamide composite material.
According to a preferred embodiment, the operating pressure of medium pressure reverse-osmosis filtering device is 1.5- 4MPa, institute
The operating pressure for stating high pressure reverse-osmosis filtering device is 3-5MPa.The operating pressure of pressure reverse-osmosis filtering device is in preferred
The operating pressure of 2.0-3.5MPa, the high pressure reverse-osmosis filtering device are 3.5-4.5MPa.
According to a preferred embodiment, the high concentrated water is evaporated by steam mechanical recompression to be crystallized back
Receive sodium sulphate and sodium chloride.
According to a preferred embodiment, the pretreating agent progress flocculation sediment that the method first passes through addition alkalinity removes
Concentrated water is obtained after removing partial organic substances, silicon ion, magnesium ion and/or calcium ion, then it is in 65mil to pass sequentially through width of flow path
It presses reverse osmosis unit and width of flow path to carry out osmosis filtration for the high pressure reverse osmosis unit of 80mil, carries out at preliminary minimizing
For reason to recycle fresh water, reverse osmosis obtained moderate concentrated water detaches monovalent ion and high valence ion by level-one electric drive film device,
To obtain the concentrated water of sodium chloride in concentrated water room respectively, and the concentrated water for mainly containing sulfate is obtained in freshwater room, wherein described one
Grade electric drive film device is selected using Neosepta CMS monovalent cations selective membranes and Neosepta ACS univalent anions
Property film, the concentrated water for mainly containing sulfate by two level electric drive film device further concentrate obtain sulfate it is highly concentrated
Water, wherein the high 0.3MPa of pressure of the pressure ratio freshwater room of the concentrated water room of the two level electric drive film device, the sodium chloride
Concentrated water further concentrates the high concentrated water for obtaining sodium chloride by three-level electric drive film device, wherein the three-level electric drive film device
The high 0.2MPa of pressure of the pressure ratio freshwater room of concentrated water room, the two level electric drive film device and three-level electric drive film device it is light
Hydroecium contains porous stone and/or porous plastics as film support component to prevent electric drive film to be damaged under stress, the electricity
The fresh water obtained in driving ion membrane separating process carries out osmosis filtration process further to detach fresh water and salt again.
The method of multistage electrically-driven ion film process high slat-containing wastewater provided by the invention is by carrying out high slat-containing wastewater
Pretreatment removes heavy metal ion, hardness ions and organic matter therein etc., prevents fouling or fouling membrane etc. to reverse osmosis unit
Caused by harmful effect.Coordinated by two steps ro device and three-level electrically-driven ion film sole duty, classification processing waste water, significantly
The organic efficiency of fresh water is improved, while minimizing processing is carried out to waste water by depth concentration, alleviates saline crystallization recycling
When evaporation burden, this method is simple, and fresh water and the salt rate of recovery are high, at low cost.
Description of the drawings
Fig. 1 is the process flow chart of multistage electrically-driven ion film process high slat-containing wastewater of the invention；With
Fig. 2 is the system and device schematic diagram of multistage electrically-driven ion film process high slat-containing wastewater of the invention.
Reference numerals list
10：Preprocessing process 40：Fresh water removal process
11：Homogeneous measures processing 50：Sludge handling process
12：Pre-treatment treatment 60：Salt removal process
13：Micro-filtration processing 61：Sodium sulphate recycles
14：Level-one sofening treatment 62：Sodium chloride recycles
20：Preliminary minimizing process 101：Regulating reservoir
21：Middle pressure osmosis filtration 102：Highly dense pond
22：High pressure osmosis filtration 103：Tubular type microstrainer
23：Secondary softening processing 104：Level-one resin container
30：Depth minus quantizing process 201：Middle pressure reverse osmosis unit
31：Level-one electric drive film process 202：High pressure reverse osmosis unit
32：Two level electric drive film process 203：Second resin tank
33：Three-level electric drive film process 301：Level-one electric drive film device.
Claims (10)
1. a kind of waste water reclaiming device of multistage electrically-driven ion film, which is characterized in that the waste water reclaiming device includes middle pressure
Reverse osmosis unit, high pressure reverse osmosis unit, level-one electric drive film device, two level electric drive film device and three-level electric drive film dress
It sets, it is dense to obtain moderate to carry out preliminary minimizing processing based on medium pressure reverse osmosis unit and the high pressure reverse osmosis unit
Water, based on the level-one electric drive film device, two level electric drive film device and three-level electric drive film device to the moderate concentrated water
Depth concentration is carried out to obtain high concentrated water, wherein
The width of flow path that medium pressure reverse osmosis unit uses is 50mil-70mil, the stream of the high pressure reverse osmosis unit use
Road width is 70mil-90mil, is jointly processed by obtain the moderate through medium pressure reverse osmosis unit and high pressure reverse osmosis unit
Concentrated water,
The level-one electric drive film device uses Neosepta CMS monovalent cations selective membranes and Neosepta ACS monovalencies
Anion-selective membrane detaches the monovalent ion in the moderate concentrated water with high valence ion to obtain chlorination in its concentrated water room respectively
It the concentrated water of sodium and is obtained in its freshwater room and mainly contains the concentrated water of sulfate,
The high 0.3MPa of pressure of the pressure ratio freshwater room of the concentrated water room of the two level electric drive film device is simultaneously concentrated for further
The concentrated water for mainly containing sulfate is to obtain the high concentrated water of sulfate, the pressure of three-level electric drive film device concentrated water room
It is higher 0.2MPa than the pressure of freshwater room and for further concentrating the concentrated water of the sodium chloride to obtain the high concentrated water of sodium chloride,
In,
The freshwater room of the two level electric drive film device and three-level electric drive film device contains porous stone and/or porous plastics is made
It is film support component to prevent electric drive film to be damaged under stress, the fresh water handled through the waste water advanced minimizing device
The preliminary minimizing device of waste water is returned to be filtered again further to detach fresh water and salt.
2. waste water reclaiming device as described in claim 1, which is characterized in that the waste water reclaiming device further includes that waste water is located in advance
Manage device, wherein
According to being added, pretreating agent carries out precipitation to the sewage pretreatment device and/or flocculation adsorption is tentatively discharged after sludge and leads to again
It crosses micro-filtration the mode of sludge is discharged again and obtain TDS values and be limited to 0.1 × 104Mg/L~1 × 104It is dense within the scope of mg/L
Water,
The width of flow path that medium pressure reverse osmosis unit uses is 50mil-70mil, the stream of the high pressure reverse osmosis unit use
Road width is 70mil-90mil, is jointly processed by obtain the restriction of TDS values through medium pressure reverse osmosis unit and high pressure reverse osmosis unit
1 × 104Mg/L~6 × 104Moderate concentrated water within the scope of mg/L,
The level-one electric drive film device uses Neosepta CMS monovalent cations selective membranes and Neosepta ACS monovalencies
Anion-selective membrane detaches the monovalent ion in the moderate concentrated water with high valence ion to obtain chlorination in its concentrated water room respectively
It the concentrated water of sodium and is obtained in its freshwater room and mainly contains the concentrated water of sulfate,
The high 0.3MPa of pressure of the pressure ratio freshwater room of the concentrated water room of the two level electric drive film device is simultaneously concentrated for further
The concentrated water for mainly containing sulfate is to obtain the high concentrated water of sulfate, the pressure of three-level electric drive film device concentrated water room
It is higher 0.2MPa than the pressure of freshwater room and for further concentrating the concentrated water of the sodium chloride to obtain the high concentrated water of sodium chloride,
In,
The freshwater room of the two level electric drive film device and three-level electric drive film device contains porous stone and/or porous plastics is made
It is film support component to prevent electric drive film to be damaged under stress, the fresh water handled through the waste water advanced minimizing device
It returns to the preliminary minimizing device of waste water and treated is filtered again further to divide after concentrated water mixes with sewage pretreatment device
From fresh water and salt.
3. waste water reclaiming device as claimed in claim 2, which is characterized in that the two level electric drive film device and the three-level
The freshwater room of electric drive film device has hard porous film support component so that liquid flow homogenizes and prevents electric drive film from existing
It is damaged under pressure.
4. waste water reclaiming device as claimed in claim 2, which is characterized in that the sewage pretreatment device include highly dense pond and
Tubular type microstrainer, wherein the sewage pretreatment device by the highly dense pond be added pretreating agent carry out precipitation and/or
Flocculation adsorption is tentatively discharged after sludge, and sludge is discharged by micro-filtration again to obtain the concentrated water, the wastewater treatment dress again
The pH for setting the concentrated water being processed to is controlled within the scope of 7.5-10.0.
5. waste water reclaiming device as claimed in claim 4, which is characterized in that the sewage pretreatment device further include for pair
Waste water carries out one that homogeneous measures the regulating reservoir of processing and the filtrate progress level-one sofening treatment for being generated to tubular type microstrainer
Grade resins tank.
6. waste water reclaiming device as claimed in claim 5, which is characterized in that the waste water reclaiming device further includes for institute
State the second resin tank that the moderate concentrated water that high pressure reverse osmosis unit is handled carries out secondary softening processing.
7. waste water reclaiming device as claimed in claim 6, which is characterized in that the waste water reclaiming device further includes being arranged in institute
It states between tubular type microstrainer and the level-one resin container and between the level-one resin container and medium pressure reverse osmosis unit, and
Medium pressure reverse osmosis unit, the high pressure reverse osmosis unit, the second resin tank and the level-one electric drive film device that
Intermediate pool for collecting and temporarily storing superior device treated waste water between this and to will be in intermediate pool
Waste water is transferred to booster pump in low-level device.
8. waste water reclaiming device as claimed in claim 7, which is characterized in that the waste water reclaiming device further includes for collecting
The sludge-tank of sludge, the return water tank for collecting fresh water and salt retracting device, wherein
The salt retracting device by steam mechanical recompression to high concentrated water be evaporated crystallization with recycle sodium sulphate and
Sodium chloride.
9. a kind of method of multistage electrically-driven ion film process high slat-containing wastewater, which is characterized in that the method first passes through addition
The pretreating agent of alkalinity carries out obtaining concentrated water after flocculation sediment removes partial organic substances, silicon ion, magnesium ion and/or calcium ion,
The high pressure reverse osmosis unit that the middle pressure reverse osmosis unit and width of flow path for being again 65mil by width of flow path successively are 80mil into
Row osmosis filtration carries out preliminary minimizing processing to recycle fresh water, and reverse osmosis obtained moderate concentrated water passes through level-one electric drive film
Device detaches monovalent ion with high valence ion to obtain the concentrated water of sodium chloride in concentrated water room respectively and mainly contain in freshwater room acquisition
Have the concentrated water of sulfate, wherein the level-one electric drive film device using Neosepta CMS monovalent cations selective membranes and
Neosepta ACS univalent anion selective membranes, the concentrated water for mainly containing sulfate by two level electric drive film device into
The concentration of one step obtains the high concentrated water of sulfate, wherein the pressure of the pressure ratio freshwater room of the concentrated water room of the two level electric drive film device
The high 0.3MPa of power, the concentrated water of the sodium chloride further concentrate the high concentrated water for obtaining sodium chloride by three-level electric drive film device,
The wherein high 0.2MPa of pressure of the pressure ratio freshwater room of three-level electric drive film device concentrated water room, the two level electric drive film dress
It sets and contains porous stone and/or porous plastics as film support component with the freshwater room of three-level electric drive film device to prevent electric drive
Dynamic film is damaged under stress, and the fresh water obtained in the electrically-driven ion membrane separating process returns to osmosis filtration process and pre- place
It is filtered again after concentrated water mixing after reason further to detach fresh water and salt.
10. the method for multistage electrically-driven ion film process high slat-containing wastewater as claimed in claim 9, which is characterized in that described
Method by carrying out osmosis filtration and electrically-driven ion membrane separation with efficient again after being pre-processed to high slat-containing wastewater
Desalted water is recycled to rate,
Wherein, the method is removed heavy metal ion in high slat-containing wastewater by sewage pretreatment device, hardness ions and had
Machine substance simultaneously adjusts pH to obtain pretreated concentrated water,
Preliminary minimizing filtering is carried out to the pretreated concentrated water by middle pressure reverse osmosis unit and high pressure reverse osmosis unit
It handles to obtain moderate concentrated water,
The moderate concentrated water is carried out by level-one electric drive film device, two level electric drive film device and three-level electric drive film device
Depth concentration is to obtain high concentrated water consequently facilitating evaporative crystallization recycles salt, wherein by using monovalent cation selective membrane and
The level-one electric drive film device separation of univalent anion selective membrane obtains the salt that monovalent cation is formed with univalent anion
Moderate concentrated water and moderate concentrated water containing high-valence cationic and/or high-valence anion,
Pass through the moderate concentrated water containing high-valence cationic and/or high-valence anion described in two level electric drive film device further concentration
It is directly evaporated crystallization recycling to obtain the high concentrated water of high price salt,
The moderate for the salt that the monovalent cation is formed with univalent anion is further concentrated by three-level electric drive film device
Concentrated water is directly evaporated crystallization recycling to obtain the high concentrated water of low price salt.
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| CN109250846A (en) * | 2018-10-18 | 2019-01-22 | 倍杰特集团股份有限公司 | A kind of brine waste processing system inhibiting fouling |
| CN113023990A (en) * | 2021-03-16 | 2021-06-25 | 中冶节能环保有限责任公司 | Method for treating high-salinity water in steel plant |
| CN114890512A (en) * | 2022-04-02 | 2022-08-12 | 倍杰特集团股份有限公司 | Lithium-containing wastewater treatment system and method based on electrically driven membrane |
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| CN108383315B (en) | 2020-08-25 |
| CN105384300A (en) | 2016-03-09 |
| CN105384300B (en) | 2018-03-20 |
| CN108218087A (en) | 2018-06-29 |
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