CN110526468B - Industrial wastewater treatment system based on high-salinity wastewater and treatment method thereof - Google Patents
Industrial wastewater treatment system based on high-salinity wastewater and treatment method thereof Download PDFInfo
- Publication number
- CN110526468B CN110526468B CN201910842865.5A CN201910842865A CN110526468B CN 110526468 B CN110526468 B CN 110526468B CN 201910842865 A CN201910842865 A CN 201910842865A CN 110526468 B CN110526468 B CN 110526468B
- Authority
- CN
- China
- Prior art keywords
- unit
- resin adsorption
- resin
- wastewater
- adsorption
- 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.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- 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
-
- 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
- C02F1/447—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by membrane distillation
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
-
- 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
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/46115—Electrolytic cell with membranes or diaphragms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- 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
- C02F2303/02—Odour removal or prevention of malodour
-
- 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
- C02F2303/16—Regeneration of sorbents, filters
Abstract
The invention discloses an industrial wastewater treatment system based on high-salinity wastewater and a treatment method thereof, belonging to the technical field of industrial wastewater treatment, the industrial wastewater treatment system based on high-salinity wastewater comprises a circulating resin adsorption unit, a multi-electrode multi-diaphragm electrolysis unit, a reverse osmosis unit, a membrane distillation unit and an evaporative crystallization unit, wherein the circulating resin adsorption unit comprises a plurality of resin adsorption sub-units, multi-electrode multi-diaphragm electrolysis is applied between resin adsorption and reverse osmosis, salt in the high-salinity wastewater can be removed more thoroughly, alkali and acid generated by multi-electrode multi-diaphragm electrolysis can automatically meet the alkali and acid requirements of reverse osmosis and membrane distillation, the resin adsorption effect can be optimized by the shift type adsorption mode of the plurality of resin adsorption sub-units, and the resin adsorption sub-units can be regenerated by high-temperature steam generated by membrane distillation, can greatly save the treatment cost and greatly improve the treatment efficiency of the high-salinity wastewater.
Description
Technical Field
The invention relates to the technical field of industrial wastewater treatment, in particular to an industrial wastewater treatment system based on high-salinity wastewater and a treatment method thereof.
Background
The high-salinity wastewater refers to wastewater with the total salt mass fraction of at least 1%. It is mainly from chemical plants and the collection and processing of petroleum and natural gas. This waste water contains a variety of substances (including salts, oils, organic heavy metals, and radioactive substances). The production route of the salt-containing wastewater is wide, and the water quantity is increased year by year. The removal of organic pollutants in saline sewage is of great importance to the environmental impact. The treatment by a biological method has the advantages that high-concentration salt substances have an inhibiting effect on microorganisms, and the treatment by a physicochemical method has large investment and high operating cost and is difficult to achieve the expected purification effect. The biological method is still the key point of the current domestic and foreign research, and the main stream of the industrial wastewater is high-salinity wastewater, and the types and chemical properties of the wastewater are greatly different according to different production processes. However, most of the salts contained in the composition are Cl-, SO42-, Na +, Ca2+ and other salts. Although these ions are all essential nutrients for the growth of microorganisms, they play an important role in promoting enzyme reactions, maintaining membrane balance and regulating osmotic pressure during the growth of microorganisms. However, if the concentration of the ions is too high, the ions can produce inhibition and toxic effects on microorganisms, and the main effects are as follows: the salt concentration is high, the osmotic pressure is high, and the microbial cells are dehydrated to cause cell protoplast separation; the salting-out action reduces the dehydrogenase activity; the chloride ions have toxic action on bacteria; the salt concentration is high, the density of the wastewater is increased, and the activated sludge is easy to float upwards and run off, so that the purification effect of the biological treatment system is seriously influenced.
In order to solve the problem of how to treat high-salinity wastewater, the most common treatment method is a distillation desalination method, which is the oldest and most common desalination method. At present, the distillation desalination technology of industrial wastewater is developed on the basis of seawater desalination technology. The distillation method is a process of heating salt-containing water to boil and evaporate the salt-containing water, and condensing the vapor into fresh water. The distillation method is the earliest desalination method and has the advantages of simple structure, easy operation, good quality of the obtained fresh water and the like. There are many types of distillation methods, such as multiple-effect evaporation, multi-stage flash evaporation, vapor compression distillation, membrane distillation, etc.
The method for zero discharge of high-salinity wastewater is proposed in recent years by some chemical research institute in Beijing of China, the high-salinity wastewater is treated by adopting a method of 'resin adsorption + high-efficiency reverse osmosis + membrane distillation + evaporative crystallization', and water resources are recovered to the maximum extent while the problem of the discharge of the high-salinity wastewater is solved; meanwhile, certain environmental protection limited company in Fujian of China also provides a high-salt industrial wastewater treatment method for multi-electrode multi-diaphragm electrolysis, and the Fenton technology and the bipolar membrane technology are combined, so that the COD of the wastewater is reduced while the salt is removed.
In addition, after the adsorption resin used for adsorbing organic pollutants is used for a period of time, high-temperature water vapor is required to be singly used for carrying out regeneration treatment on the high-salt wastewater, the series of operations invisibly increase unnecessary cost, and simultaneously reduce the treatment efficiency of the high-salt wastewater.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide an industrial wastewater treatment system based on high-salinity wastewater and a treatment method thereof, which combine multi-electrode multi-diaphragm electrolysis with resin adsorption, reverse osmosis, membrane distillation and evaporative crystallization, apply the multi-electrode multi-diaphragm electrolysis between the resin adsorption and the reverse osmosis, can enable the salt in the high-salinity wastewater to be removed more thoroughly, utilize alkali and acid generated by the multi-electrode multi-diaphragm electrolysis to automatically meet the alkali-acid requirements of the reverse osmosis and the membrane distillation, abandon the additional requirements of acid-base solution in the traditional treatment process, in addition, the cycle type adsorption mode of a plurality of resin adsorption sub-units can optimize the resin adsorption effect, utilize high-temperature steam generated by the membrane distillation to regenerate the resin adsorption sub-units, compared with the traditional regeneration treatment mode, the regeneration treatment mode utilizing the product reaction of the system can greatly save the treatment cost, meanwhile, the treatment efficiency of the salt wastewater can be greatly improved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
An industrial wastewater treatment system based on high-salinity wastewater comprises a circulating resin adsorption unit, a multi-electrode multi-diaphragm electrolysis unit, a reverse osmosis unit, a membrane distillation unit and an evaporative crystallization unit which are sequentially communicated, wherein the circulating resin adsorption unit comprises a plurality of resin adsorption sub-units, renewable resin particles are filled in the resin adsorption sub-units, firstly, resin is adopted to adsorb and remove hardness and a small amount of organic matters in the high-salinity wastewater, then, multi-electrode multi-diaphragm electrolysis is adopted to enable salt in the high-salinity wastewater to be removed more thoroughly, then, reverse osmosis is utilized to further concentrate the high-salinity wastewater after the hardness is removed to obtain reverse osmosis produced water and reverse osmosis concentrated water, the reverse osmosis concentrated water is further subjected to membrane distillation deep concentration to obtain membrane distillation produced water and membrane distillation concentrated water, the membrane distillation concentrated water is further subjected to evaporative crystallization treatment to crystallize a small amount of salt solids in the concentrated water, centralized drying treatment;
the device comprises a renewable resin particle, a plurality of honeycomb holes, a plurality of burl teeth, a resin suction monkshood unit, a bubble generation unit, a sewage treatment unit and a sewage treatment unit, wherein the plurality of honeycomb holes are formed in the renewable resin particle, the surface of the renewable resin particle is integrally connected with the plurality of burl teeth, the plurality of honeycomb holes and the plurality of burl teeth are distributed at intervals, the water inlet end of the resin suction monkshood unit is fixedly connected with the bubble generation unit, the output end of the bubble generation unit faces to the direction opposite to the water inlet direction, bubbles generated by the bubble generation unit directly impact the introduced sewage in the opposite direction, a dispersing and stirring effect is achieved on the sewage, the COD of the sewage can be effectively reduced, and the sewage is decolorized and deodorized; in addition, the sewage enters the resin adsorption subunit with bubbles, the bubbles are punctured by the conical thorn teeth on the surfaces of the renewable resin particles, and the vibration generated at the moment of bubble breakage can generate a good disturbance effect on the sewage flowing between the renewable resin particles, so that organic pollutants in the sewage are better adsorbed by the renewable resin particles, and the arrangement of the conical thorn teeth can increase the contact area between the renewable resin particles and the sewage, and further enhance the adsorption force of the renewable resin particles;
the multi-electrode multi-diaphragm electrolysis unit is used for electrolyzing to obtain acid and alkali, combining multi-electrode multi-diaphragm electrolysis with resin adsorption, reverse osmosis, membrane distillation and evaporative crystallization, and applying the multi-electrode multi-diaphragm electrolysis between the resin adsorption and the reverse osmosis, so that salt in high-salt wastewater can be removed more thoroughly, and in addition, the resin adsorption effect can be optimized by a shift type adsorption mode of a plurality of resin adsorption sub-units.
A treatment system for industrial wastewater based on high-salinity wastewater comprises the following treatment methods:
s1, feeding high-salinity wastewater into the circulating resin adsorption unit;
s2, introducing the high-salinity wastewater after resin adsorption into a multi-electrode multi-diaphragm electrolysis unit, and ionizing to obtain acid and alkali;
s3, introducing the ionized wastewater into a reverse osmosis unit for concentration and separation, and adding alkali into the reverse osmosis unit;
s4, introducing the concentrated and separated wastewater into a membrane distillation unit for deep concentration and separation, and adding acid into the membrane distillation unit;
and S5, introducing the wastewater after deep concentration and separation into an evaporative crystallization unit to obtain a small amount of salt crystals.
Further, in S1, the high-salinity wastewater sequentially passes through the plurality of resin adsorption subunits, and the shift type adsorption manner of the plurality of resin adsorption subunits can optimize the resin adsorption effect, and when a single resin adsorption subunit fails, the adsorption effect of the whole circulation type resin adsorption unit is not affected.
Furthermore, after the high-salinity wastewater passes through the single resin adsorption subunit for continuous absorption for multiple days, the resin adsorption subunit is independently connected with the membrane distillation unit, the single resin adsorption subunit through which the high-salinity wastewater passes finally is shifted to the first adsorption position, and the high-temperature water vapor generated by membrane distillation is used for carrying out regeneration treatment on the resin adsorption subunit.
Furthermore, the number of the resin adsorption aconite units is 3-5, and the plurality of resin adsorption subelements are connected in series, so that when a single resin adsorption aconite unit fails to control, normal adsorption of the whole circulating resin adsorption unit cannot be affected, the number of the resin adsorption aconite units is not too large or too small, the cost of system equipment is increased undoubtedly due to too large number, and the adsorption effect of organic pollutants is reduced due to too small number.
Further, in S3, the alkali added into the reverse osmosis unit is obtained by ionization in S2, and the alkali obtained by ionization in S2 needs to be diluted; the acid put into the membrane distillation unit is obtained by ionization in S2, the acid obtained by ionization in S2 also needs to be diluted, the alkali and the acid generated by multi-electrode multi-diaphragm electrolysis automatically meet the alkali-acid requirements of reverse osmosis and membrane distillation, and the additional requirements of acid-alkali liquid in the traditional treatment process are eliminated.
Furthermore, the bubble generating unit adopts an ultrasonic micro-nano bubble generator, a large amount of bubbles can be generated by the ultrasonic micro-nano bubble generator, the bubbles are crushed into micro-nano bubbles and are quickly dissolved in the water body to form activated oxygen-enriched water, the micro-nano bubbles are released into the water body through a bell mouth dissolving explanation of the energy release device, the gas-liquid two phases are in contact with an overlarge specific surface area and have high energy efficiency ratio, the generated bubbles directly impact the introduced sewage in opposite directions, a dispersing and stirring effect is realized on the sewage, the COD of the sewage can be effectively reduced, and the sewage is decolorized and deodorized; in addition, the sewage carries bubbles to enter the resin adsorption subunit, the bubbles are punctured by the conical piercing teeth on the surfaces of the renewable resin particles, and the vibration generated at the moment of bubble fracture can generate a good disturbance effect on the sewage flowing between the renewable resin particles, so that organic pollutants in the sewage are better adsorbed by the renewable resin particles.
Furthermore, the renewable resin particles are divided into a plurality of large, medium and small particle sizes, the renewable resin particles with the plurality of particle sizes are mixed and filled in the resin adsorption subunit, the renewable resin particles with the smaller particle size can fill the space between the renewable resin particles with the large particle size, the filtering effect of sewage is enhanced, meanwhile, the renewable resin particles with different particle sizes can enable the inside of the resin adsorption subunit to be filled more fully, the volume of the resin adsorption subunit is reduced, and the occupied area of the resin adsorption subunit is reduced.
Furthermore, the length of awl thorn tooth is one tenth of resin particle diameter of can regenerating, and awl thorn tooth length is too long, can increase the interval between the resin particle of can regenerating, and sewage passes through too smoothly, can reduce the adsorption affinity of resin particle of can regenerating, and when awl thorn tooth length was too short, the density of resin particle of can regenerating was too big, and sewage is through speed slow, can reduce sewage treatment rate.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the scheme combines multi-electrode multi-diaphragm electrolysis with resin adsorption, reverse osmosis, membrane distillation and evaporative crystallization, and applies multi-electrode multi-diaphragm electrolysis between resin adsorption and reverse osmosis, salt in high-salt wastewater can be removed more thoroughly, alkali and acid generated by multi-electrode multi-diaphragm electrolysis can automatically meet alkali and acid requirements of reverse osmosis and membrane distillation, extra requirements of acid and alkali liquor in the traditional treatment process are eliminated, in addition, the resin adsorption effect can be optimized by the alternate adsorption mode of a plurality of resin adsorption subunits, high-temperature steam generated by membrane distillation is used for carrying out regeneration treatment on the resin adsorption units, compared with the traditional regeneration treatment mode, the regeneration treatment mode of product reaction of the system can greatly save treatment cost, and meanwhile, the treatment efficiency of high-salt wastewater can be greatly improved.
(2) The high-salinity wastewater sequentially passes through the resin adsorption subunits, the resin adsorption effect can be optimized by the shift type adsorption mode of the resin adsorption subunits, and the adsorption effect of the whole circulating resin adsorption unit cannot be influenced when a single resin adsorption subunit fails.
(3) After the high-salinity wastewater passes through the single resin adsorption subunit for continuous multi-day adsorption, the resin adsorption subunit is independently connected with the membrane distillation unit, the single resin adsorption subunit through which the high-salinity wastewater passes finally shifts to the first adsorption position, and the resin adsorption subunit is subjected to regeneration treatment by using high-temperature water vapor generated by membrane distillation.
(4) The number of the resin-absorbed monkshood units is 3-5, and the plurality of resin-absorbed subunits are connected in series, so that when a single resin-absorbed monkshood unit fails to control, normal absorption of the whole circulating resin-absorbed unit cannot be affected, the number of the resin-absorbed monkshood units is not too large or too small, the cost of system equipment is increased undoubtedly if the number of the resin-absorbed monkshood units is too small, and the absorption effect of organic pollutants is reduced if the number of the resin-absorbed monkshood units is too small.
(5) The alkali put into the reverse osmosis unit is obtained by ionization in S2, and the alkali obtained by ionization in S2 needs to be diluted; the acid put into the membrane distillation unit is obtained by ionization in S2, the acid obtained by ionization in S2 also needs to be diluted, the alkali and the acid generated by multi-electrode multi-diaphragm electrolysis automatically meet the alkali-acid requirements of reverse osmosis and membrane distillation, and the additional requirements of acid-alkali liquid in the traditional treatment process are eliminated.
(6) The bubble generating unit adopts an ultrasonic micro-nano bubble generator, a large amount of bubbles can be generated through the ultrasonic micro-nano bubble generator, the bubbles are crushed into micro-nano bubbles and are quickly dissolved in a water body to form activated oxygen-enriched water, the activated oxygen-enriched water is released into the water body through a bell mouth dissolving explanation of the energy release device, two phases of gas and liquid are in contact with an overlarge specific surface area and high energy efficiency ratio, the generated bubbles directly impact the introduced sewage in opposite directions, a dispersing and stirring effect is achieved on the sewage, COD (chemical oxygen demand) of the sewage can be effectively reduced, and the sewage is decolorized and deodorized; in addition, the sewage carries bubbles to enter the resin adsorption subunit, the bubbles are punctured by the conical piercing teeth on the surfaces of the renewable resin particles, and the vibration generated at the moment of bubble fracture can generate a good disturbance effect on the sewage flowing between the renewable resin particles, so that organic pollutants in the sewage are better adsorbed by the renewable resin particles.
(7) The renewable resin particles are divided into a plurality of large, medium and small particle sizes, and the renewable resin particles with the plurality of particle sizes are mixed and filled in the resin adsorption subunit, the renewable resin particles with the smaller particle size can fill the space between the renewable resin particles with the large particle size, so that the filtering effect of sewage is enhanced, meanwhile, the renewable resin particles with different particle sizes can ensure that the inside of the resin adsorption subunit is filled more fully, the volume of the resin adsorption subunit is reduced, and the occupied area of the resin adsorption subunit is reduced.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic view showing a configuration of a cyclic resin adsorption unit according to the present invention in a state where a regenerated resin is regenerated in a shift mode;
FIG. 3 is a schematic structural view of a second state of shift regeneration of a regenerated resin in a circulating resin adsorption unit according to the present invention;
FIG. 4 is a schematic structural view of a three-phase regeneration cycle of a regenerated resin in a circulating resin adsorption unit according to the present invention;
FIG. 5 is a schematic view of the structure of a resin adsorption subunit of the present invention;
FIG. 6 is a schematic of the structure of a renewable resin particle of the present invention;
FIG. 7 is a flow diagram of a high-salinity wastewater treatment in the prior art;
FIG. 8 is a flow chart of a high-salinity wastewater treatment in the prior art;
FIG. 9 is a flow chart showing the treatment of high-salinity wastewater in the prior art.
The reference numbers in the figures illustrate:
1 resin adsorption subunit I, 2 resin adsorption subunit II, 3 resin adsorption subunit III, 4 bubble generation units, 5 renewable resin particles, 51 honeycomb holes and 52-cone thorn teeth.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
an industrial wastewater treatment system based on high-salinity wastewater comprises a circulating resin adsorption unit, a multi-electrode multi-diaphragm electrolysis unit, a reverse osmosis unit, a membrane distillation unit and an evaporative crystallization unit which are sequentially communicated, wherein the circulating resin adsorption unit comprises a plurality of resin adsorption subunits, and renewable resin particles 5 are filled in the resin adsorption subunits, firstly, resin is adopted to adsorb and remove hardness and a small amount of organic matters in the high-salinity wastewater, then multi-electrode multi-diaphragm electrolysis is adopted to remove salt in the high-salinity wastewater more thoroughly, then reverse osmosis is utilized to further concentrate the high-salinity wastewater after the hardness is removed to obtain reverse osmosis produced water and reverse osmosis concentrated water, the reverse osmosis concentrated water is further subjected to membrane distillation deep concentration to obtain membrane distillation produced water and membrane distillation concentrated water, the membrane distillation concentrated water is further subjected to evaporative crystallization treatment to crystallize a small amount of salt solids in the concentrated water, centralized drying treatment;
referring to fig. 6, a plurality of honeycomb holes 51 are formed in a renewable resin particle 5, a plurality of burred teeth 52 are integrally connected to the surface of the renewable resin particle 5, the plurality of honeycomb holes 51 and the plurality of burred teeth 52 are distributed at intervals, a bubble generating unit 4 is fixedly connected to a water inlet end of a resin absorption unit, and an output end of the bubble generating unit 4 faces to a direction opposite to a water inlet direction; in addition, the sewage enters the resin adsorption subunit with bubbles, the bubbles are punctured by the conical tooth 52 on the surface of the renewable resin particles 5, and the vibration generated at the moment of bubble rupture can generate a good disturbance effect on the sewage flowing between the renewable resin particles 5, so that organic pollutants in the sewage are better adsorbed by the renewable resin particles 5, and the arrangement of the conical tooth 52 can increase the contact area between the renewable resin particles 5 and the sewage, thereby further enhancing the adsorption force of the renewable resin particles 5;
the multi-electrode multi-diaphragm electrolysis unit is used for electrolyzing to obtain acid and alkali, the multi-electrode multi-diaphragm electrolysis is combined with resin adsorption, reverse osmosis, membrane distillation and evaporative crystallization, and the multi-electrode multi-diaphragm electrolysis is applied between the resin adsorption and the reverse osmosis, so that salt in high-salt wastewater can be removed more thoroughly, and in addition, the resin adsorption effect can be optimized by a plurality of resin adsorption subunit shift type adsorption modes.
Referring to fig. 1, a system for treating industrial wastewater based on high salinity wastewater comprises:
s1, feeding high-salinity wastewater into the circulating resin adsorption unit;
s2, introducing the high-salinity wastewater after resin adsorption into a multi-electrode multi-diaphragm electrolysis unit, and ionizing to obtain acid and alkali;
s3, introducing the ionized wastewater into a reverse osmosis unit for concentration and separation, and adding alkali into the reverse osmosis unit;
s4, introducing the concentrated and separated wastewater into a membrane distillation unit for deep concentration and separation, and adding acid into the membrane distillation unit;
and S5, introducing the wastewater after deep concentration and separation into an evaporative crystallization unit to obtain a small amount of salt crystals.
Referring to fig. 2, 3 and 4, in S1, the high-salinity wastewater passes through the plurality of resin adsorption subunits in sequence, and the shift type adsorption manner of the plurality of resin adsorption subunits can optimize the resin adsorption effect without affecting the adsorption effect of the entire cyclic resin adsorption unit when a single resin adsorption subunit fails.
Referring to fig. 2, 3 and 4, the resin adsorption subunit is numbered as resin adsorption subunit one 1, resin adsorption subunit two 2 and resin adsorption subunit three 3, after the single resin adsorption subunit through which the high-salt wastewater firstly passes is continuously adsorbed for a plurality of days, the resin adsorption subunit is separately connected with the membrane distillation unit, and the single resin adsorption subunit which is passed by the high-salinity wastewater finally shifts to the first adsorption position, after the regeneration of the resin adsorption subunit connected with the membrane distillation unit is finished, the resin adsorption subunit is moved to a position in a circulating resin adsorption unit through which the high-salinity wastewater finally passes to prepare for the next shift, the resin adsorption subunit is subjected to regeneration treatment by utilizing high-temperature water vapor generated by membrane distillation, compared with the traditional regeneration treatment mode, the regeneration treatment mode utilizing the product reaction of the system can greatly save the treatment cost and greatly improve the treatment efficiency of the high-salinity wastewater.
The number of the resin-absorbed monkshood units is 3-5, and the plurality of resin-absorbed subunits are connected in series, so that when a single resin-absorbed monkshood unit fails to control, normal absorption of the whole circulating resin-absorbed unit cannot be affected, the number of the resin-absorbed monkshood units is not too large or too small, the cost of system equipment is increased undoubtedly if the number of the resin-absorbed monkshood units is too small, and the absorption effect of organic pollutants is reduced if the number of the resin-absorbed monkshood units is too small.
Referring to fig. 1, in S3, the alkali added to the reverse osmosis unit is ionized in S2, and the alkali ionized in S2 needs to be diluted; the acid put into the membrane distillation unit is obtained by ionization in S2, the acid obtained by ionization in S2 also needs to be diluted, the alkali and the acid generated by multi-electrode multi-diaphragm electrolysis automatically meet the alkali-acid requirements of reverse osmosis and membrane distillation, and the additional requirements of acid-alkali liquid in the traditional treatment process are eliminated.
The bubble generating unit 4 adopts an ultrasonic micro-nano bubble generator, a large amount of bubbles can be generated by the ultrasonic micro-nano bubble generator, the bubbles are crushed into micro-nano bubbles and are quickly dissolved in the water body to form activated oxygen-enriched water, the activated oxygen-enriched water is released into the water body through a bell mouth dissolving explanation of the energy release device, two phases of gas and liquid are in contact with an overlarge specific surface area and high energy efficiency ratio, the generated bubbles directly impact the introduced sewage in opposite directions, a dispersing and stirring effect is achieved on the sewage, the COD of the sewage can be effectively reduced, and the sewage is decolorized and deodorized; in addition, the sewage carries bubbles into the resin adsorption subunit, the bubbles are punctured by the conical tooth 52 on the surface of the renewable resin particles 5, and the vibration generated at the moment of bubble rupture can generate a good disturbance effect on the sewage flowing between the renewable resin particles 5, so that organic pollutants in the sewage are better adsorbed by the renewable resin particles 5.
The renewable resin particles 5 are divided into a plurality of large, medium and small particle sizes, the renewable resin particles 5 with the plurality of particle sizes are mixed and filled in the resin adsorption subunit, the renewable resin particles 5 with the smaller particle size can fill the space between the renewable resin particles 5 with the large particle size, the filtering effect of sewage is enhanced, meanwhile, the renewable resin particles 5 with different particle sizes can enable the inside of the resin adsorption subunit to be filled more fully, the volume of the resin adsorption unit is reduced, and the occupied area of the resin adsorption unit is reduced.
The length of awl thorn tooth 52 is the ten minutes of 5 diameters of resin granule that can regenerate, and awl thorn tooth 52 length is too long, can increase the interval between the resin granule 5 that can regenerate, and sewage passes through too smoothly, can reduce the adsorption affinity of resin granule 5 that can regenerate, and when awl thorn tooth 52 length was too short, the density of resin granule 5 that can regenerate was too big, and sewage is through speed slow excessively, can reduce sewage treatment rate.
According to the invention, multi-electrode multi-diaphragm electrolysis is combined with resin adsorption, reverse osmosis, membrane distillation and evaporative crystallization, and the multi-electrode multi-diaphragm electrolysis is applied between the resin adsorption and the reverse osmosis, so that salt in high-salt wastewater can be removed more thoroughly, alkali and acid generated by the multi-electrode multi-diaphragm electrolysis can automatically meet the alkali-acid requirements of the reverse osmosis and the membrane distillation, the additional requirements of acid-alkali liquor in the traditional treatment process are abandoned, in addition, the resin adsorption effect can be optimized by a shift type adsorption mode of a plurality of resin adsorption sub-units, and the resin adsorption sub-units are subjected to regeneration treatment by high-temperature steam generated by the membrane distillation, compared with the traditional regeneration treatment mode, the regeneration treatment mode of the reaction of the products of the system can greatly save the treatment cost, and meanwhile, the treatment efficiency of the high-salt wastewater can be greatly improved;
in addition, the bubbles generated by the bubble generating unit 4 directly impact the introduced sewage in opposite directions, so that a dispersing and stirring effect is exerted on the sewage, the COD of the sewage can be effectively reduced, and the sewage is decolorized and deodorized; in addition, in the sewage enters the resin adsorption subunit, bubbles are punctured by the conical tooth 52 on the surface of the renewable resin particles 5, and the vibration generated at the moment of bubble rupture can generate a good disturbance effect on the sewage flowing between the renewable resin particles 5, so that organic pollutants in the sewage are better adsorbed by the renewable resin particles 5, and the arrangement of the conical tooth 52 can increase the contact area between the renewable resin particles 5 and the sewage, and further enhance the adsorption force of the renewable resin particles 5.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. The utility model provides an industrial wastewater treatment system based on high salt waste water which characterized in that: including circulating resin adsorption unit, the many diaphragm electrolysis unit of many electrodes, reverse osmosis unit, membrane distillation unit and the evaporation crystallization unit that are linked together in proper order, circulating resin adsorption unit includes a plurality of resin adsorption subelements, resin adsorption subelement is inside to be filled has renewable resin granule (5), be provided with a plurality of honeycomb holes (51) on renewable resin granule (5), renewable resin granule (5) surface integration is connected with a plurality of awl tooth (52), and a plurality of honeycomb holes (51) and a plurality of awl tooth (52) interval distribution, the resin inhales the end fixedly connected with bubble generating element (4) of intaking of monkshood unit, and the output orientation and the inflow opposite direction of bubble generating element (4), many diaphragm electrolysis unit electrolysis of many electrodes obtain acid and alkali.
2. The high salinity wastewater-based industrial wastewater treatment system according to claim 1, wherein: the processing method comprises the following steps:
s1, feeding high-salinity wastewater into the circulating resin adsorption unit;
s2, introducing the high-salinity wastewater after resin adsorption into a multi-electrode multi-diaphragm electrolysis unit, and ionizing to obtain acid and alkali;
s3, introducing the ionized wastewater into a reverse osmosis unit for concentration and separation, and adding alkali into the reverse osmosis unit;
s4, introducing the concentrated and separated wastewater into a membrane distillation unit for deep concentration and separation, and adding acid into the membrane distillation unit;
and S5, introducing the wastewater after deep concentration and separation into an evaporative crystallization unit to obtain a small amount of salt crystals.
3. The high salinity wastewater-based industrial wastewater treatment system according to claim 2, wherein: in S1, the high-salt wastewater passes through a plurality of resin adsorption subunits in sequence.
4. The high salinity wastewater-based industrial wastewater treatment system according to claim 3, wherein: and after the single resin adsorption subunit through which the high-salt wastewater firstly passes continuously adsorbs for multiple days, independently connecting the resin adsorption subunit with the membrane distillation unit, and shifting the single resin adsorption subunit through which the high-salt wastewater finally passes to a first adsorption position.
5. The high salinity wastewater-based industrial wastewater treatment system according to claim 1 or 4, wherein: the number of the resin adsorption subunit is 3-5, and the plurality of resin adsorption subunits are connected in series.
6. The high salinity wastewater-based industrial wastewater treatment system according to claim 2, wherein: in S3, the alkali added into the reverse osmosis unit is obtained by ionization in S2, and the alkali obtained by ionization in S2 needs to be diluted.
7. The high salinity wastewater-based industrial wastewater treatment system according to claim 2, wherein: in S4, the acid added into the membrane distillation unit is obtained by ionization in S2, and the acid obtained by ionization in S2 needs to be diluted.
8. The high salinity wastewater-based industrial wastewater treatment system according to claim 1, wherein: the bubble generation unit (4) adopts an ultrasonic micro-nano bubble generator.
9. The high salinity wastewater-based industrial wastewater treatment system according to claim 1, wherein: the renewable resin particles (5) are divided into a plurality of large, medium and small particle sizes, and the renewable resin particles (5) with the plurality of particle sizes are mixed and filled in the resin adsorption subunit.
10. The high salinity wastewater-based industrial wastewater treatment system according to claim 1, wherein: the length of the stabbing teeth (52) is one tenth of the diameter of the renewable resin particles (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910842865.5A CN110526468B (en) | 2019-09-06 | 2019-09-06 | Industrial wastewater treatment system based on high-salinity wastewater and treatment method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910842865.5A CN110526468B (en) | 2019-09-06 | 2019-09-06 | Industrial wastewater treatment system based on high-salinity wastewater and treatment method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110526468A CN110526468A (en) | 2019-12-03 |
| CN110526468B true CN110526468B (en) | 2022-01-21 |
Family
ID=68667644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910842865.5A Active CN110526468B (en) | 2019-09-06 | 2019-09-06 | Industrial wastewater treatment system based on high-salinity wastewater and treatment method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110526468B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293156A (en) * | 1999-10-19 | 2001-05-02 | 韩相培 | Fluidized biomembrane carrier and its making method |
| CN105084631A (en) * | 2015-08-26 | 2015-11-25 | 山东鼎信生态微环境科技股份有限公司 | Process for treating resin regeneration wastewater |
| JP2016101565A (en) * | 2014-11-28 | 2016-06-02 | 株式会社 アイロム | Manufacturing method and manufacturing apparatus for hydrogen water |
| CN105923877A (en) * | 2016-06-21 | 2016-09-07 | 太仓市顺邦防腐设备有限公司 | Wastewater treatment process for wet-process chromium metallurgy |
| CN106310713A (en) * | 2016-08-31 | 2017-01-11 | 朱小琼 | Resin column mechanism |
| CN106315947A (en) * | 2016-09-30 | 2017-01-11 | 程艳青 | Processing system and processing technology for industrial sewage containing heavy metal |
| CN106396228A (en) * | 2016-09-18 | 2017-02-15 | 内蒙古久科康瑞环保科技有限公司 | Device and method for treating industrial wastewater with high salt content |
| CN109384873A (en) * | 2018-11-05 | 2019-02-26 | 西北工业大学 | A kind of surface pinholes shape recess porous resin ball and preparation method |
| CN109626627A (en) * | 2018-12-06 | 2019-04-16 | 江苏维尔利环保科技股份有限公司 | Lime-ash leachate pretreatment method with high salt |
| CN209411901U (en) * | 2018-10-24 | 2019-09-20 | 上海景观实业发展有限公司 | A kind of mixed aerator of cylinder type rotary |
| CN111821957A (en) * | 2020-07-22 | 2020-10-27 | 郭潜 | Plant fiber cleaning suspension ball based on air-rotating centrifugal technology |
| CN112125371A (en) * | 2020-09-04 | 2020-12-25 | 钟德仁 | Adsorption ball for pond water treatment |
-
2019
- 2019-09-06 CN CN201910842865.5A patent/CN110526468B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293156A (en) * | 1999-10-19 | 2001-05-02 | 韩相培 | Fluidized biomembrane carrier and its making method |
| JP2016101565A (en) * | 2014-11-28 | 2016-06-02 | 株式会社 アイロム | Manufacturing method and manufacturing apparatus for hydrogen water |
| CN105084631A (en) * | 2015-08-26 | 2015-11-25 | 山东鼎信生态微环境科技股份有限公司 | Process for treating resin regeneration wastewater |
| CN105923877A (en) * | 2016-06-21 | 2016-09-07 | 太仓市顺邦防腐设备有限公司 | Wastewater treatment process for wet-process chromium metallurgy |
| CN106310713A (en) * | 2016-08-31 | 2017-01-11 | 朱小琼 | Resin column mechanism |
| CN106396228A (en) * | 2016-09-18 | 2017-02-15 | 内蒙古久科康瑞环保科技有限公司 | Device and method for treating industrial wastewater with high salt content |
| CN106315947A (en) * | 2016-09-30 | 2017-01-11 | 程艳青 | Processing system and processing technology for industrial sewage containing heavy metal |
| CN209411901U (en) * | 2018-10-24 | 2019-09-20 | 上海景观实业发展有限公司 | A kind of mixed aerator of cylinder type rotary |
| CN109384873A (en) * | 2018-11-05 | 2019-02-26 | 西北工业大学 | A kind of surface pinholes shape recess porous resin ball and preparation method |
| CN109626627A (en) * | 2018-12-06 | 2019-04-16 | 江苏维尔利环保科技股份有限公司 | Lime-ash leachate pretreatment method with high salt |
| CN111821957A (en) * | 2020-07-22 | 2020-10-27 | 郭潜 | Plant fiber cleaning suspension ball based on air-rotating centrifugal technology |
| CN112125371A (en) * | 2020-09-04 | 2020-12-25 | 钟德仁 | Adsorption ball for pond water treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110526468A (en) | 2019-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20230002854A1 (en) | New method for extracting lithium from salt lake brine | |
| Mai et al. | A review of posttreatment technologies for anaerobic effluents for discharge and recycling of wastewater | |
| CN207596652U (en) | A kind of highly mineralized mine water near-zero release comprehensive resource PDCES processing systems | |
| CN106892529A (en) | A kind of many technology coupling purification high salt water systems based on microalgae | |
| CN105016541A (en) | Method for separating and recovering salts from high-salt wastewater | |
| CN110526439A (en) | A kind of reuse method and device of RO strong brine | |
| CN112093835B (en) | Baffling type supergravity concentration equipment | |
| CN108862472A (en) | A kind of advanced waste treatment method of ion exchange resin and the integrated removing nitrate nitrogen of electrochemistry | |
| CN105502858A (en) | Method for treating industrial wastewater with oil and heavy metal | |
| US11230480B2 (en) | Method for hybridized desalination system using membrane distillation and adsorption desalination cycles | |
| CN110526468B (en) | Industrial wastewater treatment system based on high-salinity wastewater and treatment method thereof | |
| CN201284276Y (en) | System for extracting concentrated liquor from water at deep layer of ocean | |
| CN205328802U (en) | Many technological couplings purify high salt water system based on little algae | |
| CN106746130A (en) | A kind of high-salt concentrated water zero-discharge treatment system and process | |
| CN103224307B (en) | Continuous electro-adsorption process-based sea water desalination apparatus | |
| CN204824476U (en) | Separation and recovery unit of high salt waste water mesohaline | |
| CN105731727A (en) | System for treating heavy metal industrial wastewater containing oil | |
| CN101402494B (en) | System for extracting concentrated liquor from water at deep layer of ocean and extracting process thereof | |
| CN206616102U (en) | A kind of high-salt concentrated water zero discharge treatment device | |
| CN215627446U (en) | Kitchen biogas slurry purification device | |
| Sánchez Carceller | Concentrate treatments in reverse osmosis desalination plants: Status and innovative proposals | |
| CN216513360U (en) | Denitrification resin regeneration waste liquid treatment system | |
| CN218321028U (en) | Landfill leachate full-quantization treatment device with low biochemical property | |
| CN115159637B (en) | Device for desalting seawater and recovering acid and alkali | |
| CN210313792U (en) | Stevioside production regenerated liquid ozone catalytic treatment system |
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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211224 Address after: 210009 north side of 22nd floor, block B, Lianchuang technology building, No.16 Jihui Road, Gulou District, Nanjing City, Jiangsu Province Applicant after: Nanjing shuidi Environmental Engineering Co.,Ltd. Address before: 226001 201-14, building 5, Yuanrong residence, No. 57, Gongnong Road, Chongchuan District, Nantong City, Jiangsu Province Applicant before: Jiang Wei |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |