CN112142148A - High-salinity wastewater treatment system and treatment method - Google Patents
High-salinity wastewater treatment system and treatment method Download PDFInfo
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- CN112142148A CN112142148A CN202011136112.1A CN202011136112A CN112142148A CN 112142148 A CN112142148 A CN 112142148A CN 202011136112 A CN202011136112 A CN 202011136112A CN 112142148 A CN112142148 A CN 112142148A
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- flue gas
- salinity wastewater
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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
- C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
Abstract
The invention discloses a high-salinity wastewater treatment system which comprises an incinerator, a dryer, a drying tower, a flue gas treatment system, a smoke exhaust fan and a discharge cylinder, wherein the incinerator comprises a feed inlet and a discharge outlet, a cloth belt conveyor and a spiral conveyor are arranged on one side of the feed inlet, the discharge outlet is sequentially connected with a flue gas dust settling tower and a high-temperature tai cotton dust remover, the dryer comprises a high-salinity wastewater feed inlet, a flue gas inlet and a flue gas outlet, one side of the drying tower is connected with the flue gas outlet, one side of the drying tower, far away from the dryer, is connected with a cyclone dust remover and a bag type dust remover, the bag type dust remover introduces dust-removed gas into the flue gas treatment system, the smoke exhaust fan comprises an air inlet and an air outlet, the air inlet is. The high-salinity wastewater treatment system forms a whole set of circulation, greatly improves the heat efficiency of high-salinity wastewater drying, realizes the integrated treatment of high-salinity wastewater drying, incineration and waste gas, and greatly meets the requirements of regeneration and utilization of high-salinity wastewater.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a high-salinity wastewater treatment system and a treatment method.
Background
The industrial such as printing and dyeing, papermaking, medical intermediate, pesticide, chemical industry can produce a large amount of organic waste water containing salt in the production, this kind of waste water salt content is higher, pollute serious and do not have the value of recovery, can discharge after must handling, the water treatment technology commonly used at present is biological treatment, it has characteristics such as wide range of application, strong adaptability, inorganic salts plays the important role such as promoting enzyme reaction, maintaining membrane balance and adjusting osmotic pressure in the microorganism growth process, but too high salt concentration can produce the inhibition to the growth of microorganism, its main reason lies in: (1) high salt concentrations lead to high osmotic pressure, which dehydrates microbial cells and causes separation of cellular plasma; (2) the salting-out action reduces the dehydrogenase activity; (3) high chloride ions have toxic action on bacteria; (4) the salt-containing wastewater has high density, and the activated sludge is easy to float and run off; based on the above points, the biological treatment technology can only treat saline wastewater with the salt concentration lower than 1%, and if the wastewater is diluted, not only can the waste of water resources be caused, but also the consequences of huge treatment facilities, increased investment, increased operating cost, poor feasibility and the like can be caused.
The method for treating the high-concentration salt-containing wastewater by using the incineration technology of the incineration device is produced at the same time, and is an effective mode for treating the high-concentration salt-containing wastewater at present. The existing high-salt wastewater incineration mode is generally treated by direct incineration, and the treatment causes low incineration efficiency and generates a large amount of smoke to pollute air.
Disclosure of Invention
The present invention aims to provide a high salinity wastewater treatment system and treatment method that solves one or more of the above-mentioned problems of the prior art.
The high-salinity wastewater treatment system comprises an incinerator, a dryer, a drying tower, a flue gas treatment system, a smoke exhaust fan and a discharge cylinder, wherein the incinerator comprises a feed inlet and a discharge outlet, a cloth belt conveyor and a screw conveyor are arranged on one side of the feed inlet, the discharge outlet is sequentially connected with a flue gas dust settling tower and a high-temperature tai-mian dust remover, the flue gas dust settling tower is used for settling dust in high-temperature flue gas, the high-temperature tai-mian dust remover is used for converting the high-temperature flue gas into circulating gas and then introducing the circulating gas into the dryer, the dryer comprises a high-salinity wastewater feed inlet, a flue gas inlet and a flue gas outlet, one side of the drying tower is connected with the flue gas outlet, one side of the drying tower, far away from the dryer, is connected with a cyclone dust remover and a bag dust remover, the cyclone dust remover is used for introducing dried salt-, the bag type dust collector introduces ash particles into the incinerator through a pipeline, the bag type dust collector introduces the dedusted gas into a flue gas treatment system, the smoke exhaust fan comprises an air inlet and an air outlet, the air inlet is connected with the flue gas treatment system, and the air outlet is connected with the discharge cylinder.
In some embodiments, the dryer is a rotary ebullient dryer.
In some embodiments, the dryer is provided with an explosion-proof valve.
In some embodiments, a flue gas treatment system includes a desulfurization tower in communication with the bag house, a water wash tower in communication with the desulfurization tower, and a demister in communication with the water wash tower and the discharge drum in communication with the demister.
In some embodiments, a crusher is disposed on a side wall of the drying tower, the crusher includes a first main shaft, a fixing flange, a first bearing seat, a first blade, and a first motor, the fixing flange is fixedly connected to the side wall of the drying tower, the first bearing seat is fixedly connected to the fixing flange, and a first bearing is disposed in the first bearing seat, the first main shaft sequentially penetrates through the fixing flange and the first bearing seat, the first main shaft is disposed in the first bearing, a plurality of first blades are disposed at an end portion of the first main shaft, and the first blade is located in the drying tower, and the first motor is disposed at an end of the first main shaft, which is far away from the drying tower, and is used for driving the first main shaft to rotate.
In some embodiments, the drying tower further comprises a spindle base, the spindle base is provided with a plurality of bushings, the spindle base is fixed on the side wall of the drying tower, the first spindle penetrates through the spindle base, and the first spindle is arranged in the bushings.
In some embodiments, a classifier is disposed at the top of the drying tower, the classifier includes a second main shaft, a second bearing seat, a sleeve, second blades, and a second motor, the second bearing seat is fixed to the top of the drying tower, the second bearing seat is provided with a plurality of second bearings, the sleeve is fixed to the inner tower wall of the drying tower through a first fixing member and a second fixing member, the sleeve is a cone-shaped sleeve with a large end at the upper end and a small end at the lower end, the second main shaft penetrates through the second bearing seat and is disposed in the second bearing, the end of the second main shaft is provided with a plurality of second blades, the second blades are disposed in the sleeve, the second motor is disposed at one end of the second main shaft far away from the drying tower, and the second motor is used for driving the second main shaft to rotate.
In some embodiments, the spindle further includes a first shaft sleeve and a second shaft sleeve, the first shaft sleeve is disposed on the upper end surface of the sleeve, the second shaft sleeve is disposed on the lower end surface of the sleeve, and the second spindle is disposed on the first shaft sleeve and the second shaft sleeve.
The high-salinity wastewater treatment method comprises the following steps:
s1, conveying the high-salinity wastewater to a rotary boiling dryer, introducing natural gas into the incinerator, converting the high-temperature flue gas generated by the incinerator into circulating gas through a flue gas dust settling tower and a high-temperature tai-cotton dust remover, introducing the circulating gas into the rotary boiling dryer from a flue gas inlet, controlling the rotary boiling dryer to continuously propel, crush and heat the high-salinity wastewater to realize drying and granulation, and then classifying the high-salinity wastewater in a falling mode to be in a boiling state and then guiding the high-salinity wastewater out of the drying tower;
s2, carrying out gas-solid separation on the dried high-salt solid waste through a cyclone dust collector and a bag type dust collector on one side of a drying tower, leading the dried salt-containing solid waste into the incinerator through the spiral conveyor, leading ash particles into the incinerator through a pipeline by the bag type dust collector, separating, filtering, washing and adsorbing the dust-removed gas through a desulfurizing tower and a washing tower in sequence, then condensing and dewing the dried gas through a demister, removing fog drops, and finally discharging the gas reaching the standard through an exhaust funnel.
Has the advantages that: the high-salinity wastewater treatment system provided by the invention is used for drying high-salinity wastewater through the dryer and the drying tower, the incinerator is used for incinerating dried high-salinity solid waste, the heat value of the high-salinity solid waste is efficiently utilized, the harmlessness, the stabilization and the recycling of the high-salinity wastewater treatment are effectively realized, meanwhile, high-temperature flue gas generated by incinerating the high-salinity solid waste can be directly used for the dryer and the drying tower, then the discharged flue gas is introduced into the flue gas treatment system, the environmental protection emission requirement of atmosphere is met after separation, filtration and purification, and the environmental pollution is reduced to the maximum extent. The high-salinity wastewater treatment system forms a whole set of circulation, greatly improves the heat efficiency of high-salinity wastewater drying, realizes the integrated treatment of high-salinity wastewater drying, incineration and waste gas, and greatly meets the requirements of regeneration and utilization of high-salinity wastewater.
Drawings
FIG. 1 is a schematic diagram of a high salinity wastewater treatment system according to the present invention;
FIG. 2 is a schematic diagram of a high salinity wastewater treatment system according to the present invention;
FIG. 3 is a schematic view showing the structure of a pulverizer of a high-salinity wastewater treatment system according to the present invention;
FIG. 4 is a schematic diagram of the structure of the classifier of the high-salinity wastewater treatment system of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying figures 1 and 2 of the specification.
A high-salinity wastewater treatment system comprises an incinerator 100, a dryer 200, a drying tower 300, a flue gas treatment system, a smoke exhaust fan 820 and a discharge cylinder 900, wherein the incinerator 100 comprises a feed inlet and a discharge outlet, a cloth belt conveyor 710 and a screw conveyor 720 are arranged on one side of the feed inlet, the discharge outlet is sequentially connected with a flue gas dust settling tower 510 and a high-temperature tai-cotton dust remover 520, the flue gas dust settling tower 510 is used for settling dust in high-temperature flue gas, the high-temperature tai-cotton dust remover 520 is used for converting the high-temperature flue gas into circulating gas and then introducing the circulating gas into the dryer 200, the dryer 200 comprises a high-salinity wastewater feed inlet, a flue gas inlet and a flue gas outlet, one side of the drying tower 300 is connected with the flue gas outlet, one side of the drying tower 300, far away from the dryer 200, is connected with a cyclone dust remover 410 and a bag-type dust remover 420, and the cyclone dust remover 410 is used for introducing The bag filter 420 introduces ash particles into the incinerator 100 through a pipeline, the bag filter 420 introduces dedusted gas into a flue gas treatment system, the smoke exhaust fan 820 comprises an air inlet and an air outlet, the air inlet is connected with the flue gas treatment system, and the air outlet is connected with the discharge cylinder 900; wherein, flue gas processing system includes desulfurizing tower 610, water wash tower 620 and defroster 810, desulfurizing tower 610 with bag collector 420 intercommunication, water wash tower 620 with desulfurizing tower 610 leads to, defroster 810 with water wash tower 620 intercommunication, discharge tube 900 with defroster 810 intercommunication.
The working principle is as follows: introducing the high-salinity wastewater into a dryer through a high-salinity wastewater inlet; introducing high-temperature flue gas generated by the incinerator into the dryer to transfer heat and mass with the high-salinity wastewater, evaporating water in the high-salinity wastewater to enable the water content of the high-salinity wastewater to be lower than 30%, and treating the flue gas discharged by the dryer through the desulfurizing tower, the washing tower and the demister in the process to achieve the standard and discharge; and directly conveying the dried high-salt solid waste to an incinerator for incineration.
Further, the dryer 200 is a rotary boiling dryer.
The rotary boiling drying technology is selected, and the rotary boiling drying machine has the outstanding advantages of high drying strength and energy conservation, is suitable for directly and quickly drying materials such as paste, filter cakes and the like, and has the following advantages compared with other drying technologies.
The drying technology of rotary boiling solves the problem that the drying equipment cannot run at high temperature in the past, and the running temperature can reach 900 ℃, so the heat efficiency can reach 90% (if the general equipment cannot run when exceeding 400 ℃);
(2) the sealing performance is good, the oxygen content is not increased in the drying process, the possibility of deflagration of sludge in the drying process is eliminated, the drum-type drying machine is poor in sealing performance and prone to air leakage, the oxygen content is increased, and the possibility of deflagration is increased for sludge containing a certain heat value and high in volatile matter;
(3) mud is difficult for gluing the wall, because of the mummification host computer is equipped with and impels breaker, reduces the mud possibility of gluing the wall, impels broken and only runs down at low speed, has reduced the centrifugal force that makes mud get rid of to the inner wall, and drum-type mummification machine is only equipped with spiral guide plate, because of mud contains capillary binding water, its heat absorption exothermal process is slower, and this stage is very easy to adhere on the drum wall, and no external force is clear away again to influence mummification efficiency, make equipment normal operating not even, these problems often adopt the drier back mixing mode to handle. Wet sludge is mixed with a certain proportion of dry sludge before feeding, the water content is reduced to about 50%, then the mixture is fed into a drier, and no external force crushing effect exists, so that the dried inner side of the outer layer of large particles is found to be wet sludge, and no enhanced heat transfer system exists, so that a slow and long process is needed to meet the requirement of sludge drying reduction, a roller generally needs more than 40 meters to meet the drying requirement, so that the heat energy consumption is high, about 3000 kilocalories are needed for every evaporation/kilogram of water, the volume of the equipment is long, and the equipment investment and the operation cost are correspondingly increased;
the unfavorable working condition that the first-generation flash evaporation sludge drying machine blocks a host machine due to high initial moisture or improper operation is solved;
and (5) greatly reduced installed power. Taking a drier for treating 100t of sludge daily as an example, the installed power of the first generation drier is about 900kW, while the installed power of the second generation drier is only about 280kW, so that the operation cost of the equipment is greatly reduced, and the economic benefit is remarkable.
The core equipment of the system is small in size, the system is simple, the total size is small, the investment on civil engineering and equipment is correspondingly reduced, the installation and the maintenance are convenient, and the drying equipment is small in size, small in heat dissipation surface area, high in heat utilization rate and the like.
In order to ensure the safety of the system operation, the dryer 200 is provided with an explosion-proof valve 210.
As shown in fig. 3:
Further, the drying tower further comprises a spindle seat 314, the spindle seat 314 is provided with a plurality of shaft sleeves, the spindle seat 314 is fixed on the side wall of the drying tower 300, the first spindle 310 penetrates through the spindle seat 314, and the first spindle 310 is arranged in the shaft sleeves.
The first blade 313 axis is 15 to 45 degrees with the first main shaft 310 axis for enhancing the air flow of the blade. Preferably, the blade 50 axis is 30 ° to the main shaft 40 axis.
In the high-salinity wastewater treatment system, the airflow to be dried can rapidly flow through the drying tower under the action of the smoke exhaust fan 820, so that the problems of short retention time in the drying tower, poor drying effect and the like are caused. And the setting of rubbing crusher, the air current that produces through the rotation of blade can be disturbed the air current that treats drying that the draught fan introduced, makes its dwell time extension in the drying tower, improves its drying effect.
As shown in fig. 4:
the top of the drying tower 300 is provided with a classifier, the classifier comprises a second main shaft 320, a second bearing seat 322, a sleeve 321, second blades and a second motor, the second bearing seat 322 is fixed on the top of the drying tower 300, the second bearing seat 322 is provided with a plurality of second bearings 323, the sleeve 321 is fixed on the inner tower wall of the drying tower 300 through a first fixing part 324 and a second fixing part 325, the sleeve 321 is a cone-shaped sleeve with a big end at the upper end and a small end at the lower end, the second main shaft 320 penetrates through the second bearing seat 322 and is arranged in the second bearings 323, the end part of the second main shaft 320 is provided with a plurality of second blades, the second blades are positioned in the sleeve 321, and the second motor is arranged at one end of the second main shaft 320 far away from the drying tower 300 and is used for driving the second main shaft 320 to rotate.
Further, the spindle further comprises a first shaft sleeve 326 and a second shaft sleeve 327, wherein the first shaft sleeve 326 is arranged on the upper end surface of the sleeve 321, the second shaft sleeve 327 is arranged on the lower end surface of the sleeve 321, and the second spindle 320 is arranged on the first shaft sleeve 326 and the second shaft sleeve 327.
The air outlet of drying tower generally locates the last lateral wall of drying tower, because under smoke exhaust fan 820's effect, the majority air current of treating the drying can follow the latter half outflow of air outlet, leads to its dwell time in the drying tower short, drying effect subalternation problem. And the classifier is arranged, airflow to be dried is introduced from the lower part of the sleeve through the airflow generated by the rotation of the blades, so that the airflow to be dried is filled in the top of the drying tower, the airflow to be dried flows out from the whole air outlet, the retention time of the airflow to be dried in the drying tower is prolonged, and the drying effect of the airflow is improved.
A high-salinity wastewater treatment method comprises the following steps:
s1, conveying the high-salinity wastewater to a rotary boiling dryer, introducing natural gas into the incinerator, converting the high-temperature flue gas generated by the incinerator into circulating gas through a flue gas dust settling tower and a high-temperature tai-cotton dust remover, introducing the circulating gas into the rotary boiling dryer from a flue gas inlet, controlling the rotary boiling dryer to continuously propel, crush and heat the high-salinity wastewater to realize drying and granulation, and then classifying the high-salinity wastewater in a falling mode to be in a boiling state and then guiding the high-salinity wastewater out of the drying tower;
s2, carrying out gas-solid separation on the dried high-salt solid waste through a cyclone dust collector and a bag type dust collector on one side of a drying tower, leading the dried salt-containing solid waste into the incinerator through the spiral conveyor, leading ash particles into the incinerator through a pipeline by the bag type dust collector, separating, filtering, washing and adsorbing the dust-removed gas through a desulfurizing tower and a washing tower in sequence, then condensing and dewing the dried gas through a demister, removing fog drops, and finally discharging the gas reaching the standard through an exhaust funnel.
The high-salinity wastewater treatment system provided by the invention is used for drying high-salinity wastewater through the dryer and the drying tower, the incinerator is used for incinerating dried high-salinity solid waste, the heat value of the high-salinity solid waste is efficiently utilized, the harmlessness, the stabilization and the recycling of the high-salinity wastewater treatment are effectively realized, meanwhile, high-temperature flue gas generated by incinerating the high-salinity solid waste can be directly used for the dryer and the drying tower, then the discharged flue gas is introduced into the flue gas treatment system, the environmental protection emission requirement of atmosphere is met after separation, filtration and purification, and the environmental pollution is reduced to the maximum extent. The high-salinity wastewater treatment system forms a whole set of circulation, greatly improves the heat efficiency of high-salinity wastewater drying, realizes the integrated treatment of high-salinity wastewater drying, incineration and waste gas, and greatly meets the requirements of regeneration and utilization of high-salinity wastewater.
The foregoing is only a preferred form of the invention and it should be noted that it will be apparent to those skilled in the art that several similar variations and modifications can be made without departing from the inventive concept and these should be considered within the scope of the present invention.
Claims (9)
1. The high-salinity wastewater treatment system is characterized by comprising an incinerator (100), a dryer (200), a drying tower (300), a flue gas treatment system, a smoke exhaust fan (820) and a discharge cylinder (900), wherein the incinerator (100) comprises a feed inlet and a discharge outlet, a cloth belt conveyor (710) and a spiral conveyor (720) are arranged on one side of the feed inlet, the discharge outlet is sequentially connected with a flue gas dust settling tower (510) and a high-temperature tai-cotton dust remover (520), the flue gas dust settling tower (510) is used for settling dust in high-temperature flue gas, the high-temperature tai-cotton dust remover (520) is used for converting the high-temperature flue gas into circulating gas and then introducing the circulating gas into the dryer (200), the dryer (200) comprises a high-salinity wastewater feed inlet, a flue gas inlet and a flue gas outlet, one side of the drying tower (300) is connected with the flue gas outlet, and one side, far away from the dryer (200), of the drying tower (300) The bag type dust collector (420), the cyclone dust collector (410) is used for introducing dried salt-containing solid waste into the incinerator (100) through the screw conveyer (720), the bag type dust collector (420) introduces ash particles into the incinerator (100) through a pipeline, the bag type dust collector (420) introduces dust-removed gas into a flue gas treatment system, the smoke exhaust fan (820) comprises an air inlet and an air outlet, the air inlet is connected with the flue gas treatment system, and the air outlet is connected with the discharge cylinder (900).
2. A high salinity wastewater treatment system according to claim 1, characterized in that said dryer (200) is a rotary ebullient dryer.
3. A high salinity wastewater treatment system according to claim 1, characterized in that, the dryer (200) is provided with an explosion-proof valve (210).
4. The high-salinity wastewater treatment system according to claim 1, wherein the flue gas treatment system comprises a desulfurization tower (610), a water washing tower (620) and a demister (810), wherein the desulfurization tower (610) is communicated with the baghouse (420), the water washing tower (620) is communicated with the desulfurization tower (610), the demister (810) is communicated with the water washing tower (620), and the discharge barrel (900) is communicated with the demister (810).
5. The high-salinity wastewater treatment system according to any one of claims 1 to 4, wherein the drying tower (300) is provided with a crusher at the side wall thereof, the crusher comprises a first main shaft (310), a fixed flange (311), a first bearing seat (312), a first blade (313) and a first motor, the fixed flange (311) is fixedly connected with the side wall of the drying tower (300), the first bearing seat (312) is fixedly connected with the fixed flange (311) and a first bearing is arranged in the first bearing seat (312), the first main shaft (310) sequentially penetrates through the fixed flange (311) and the first bearing seat (312), the first main shaft (310) is arranged in the first bearing, a plurality of first blades (313) are arranged at the end of the first main shaft (312) and the first blades (313) are arranged in the drying tower (300), the first motor is arranged at one end, far away from the drying tower (300), of the first main shaft (312) and is used for driving the first main shaft (312) to rotate.
6. The high-salinity wastewater treatment system according to claim 5, characterized in that the system further comprises a spindle base (314), wherein the spindle base (314) is provided with a plurality of bushings, the spindle base (314) is fixed on the side wall of the drying tower (300), the first spindle (310) penetrates through the spindle base (314), and the first spindle (310) is arranged in the bushings.
7. The high-salinity wastewater treatment system according to claim 1, wherein the top of the drying tower (300) is provided with a classifier, the classifier comprises a second main shaft (320), a second bearing seat (322), a sleeve (321), second blades and a second motor, the second bearing seat (322) is fixed on the top of the drying tower (300), the second bearing seat (322) is provided with a plurality of second bearings (323), the sleeve (321) is fixed on the inner tower wall of the drying tower (300) through a first fixing part (324) and a second fixing part (325), the sleeve (321) is a cone-shaped sleeve with a truncated cone-shaped large end at the upper end and a small end at the lower end, the second main shaft (320) penetrates through the second bearing seat (322) and is arranged in the second bearing (323), the end of the second main shaft (320) is provided with a plurality of second blades, and the second blades are arranged in the sleeve (321), the second motor is arranged at one end, far away from the drying tower (300), of the second spindle (320) and is used for driving the second spindle (320) to rotate.
8. The high-salinity wastewater treatment system according to claim 7, characterized in that the system further comprises a first shaft sleeve (326) and a second shaft sleeve (327), wherein the first shaft sleeve (326) is arranged on the upper end surface of the sleeve (321), the second shaft sleeve (327) is arranged on the lower end surface of the sleeve (321), and the second main shaft (320) is arranged on the first shaft sleeve (326) and the second shaft sleeve (327).
9. A high-salinity wastewater treatment method is characterized by comprising the following steps:
s1, conveying the high-salinity wastewater to a rotary boiling dryer, introducing natural gas into the incinerator, converting the high-temperature flue gas generated by the incinerator into circulating gas through a flue gas dust settling tower and a high-temperature tai-cotton dust remover, introducing the circulating gas into the rotary boiling dryer from a flue gas inlet, controlling the rotary boiling dryer to continuously propel, crush and heat the high-salinity wastewater to realize drying and granulation, and then classifying the high-salinity wastewater in a falling mode to be in a boiling state and then guiding the high-salinity wastewater out of the drying tower;
s2, carrying out gas-solid separation on the dried high-salt solid waste through a cyclone dust collector and a bag type dust collector on one side of a drying tower, leading the dried salt-containing solid waste into the incinerator through the spiral conveyor, leading ash particles into the incinerator through a pipeline by the bag type dust collector, separating, filtering, washing and adsorbing the dust-removed gas through a desulfurizing tower and a washing tower in sequence, then condensing and dewing the dried gas through a demister, removing fog drops, and finally discharging the gas reaching the standard through an exhaust funnel.
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