CN116102109A - Recycling recycling treatment process for high-salinity wastewater - Google Patents
Recycling recycling treatment process for high-salinity wastewater Download PDFInfo
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- CN116102109A CN116102109A CN202310376118.3A CN202310376118A CN116102109A CN 116102109 A CN116102109 A CN 116102109A CN 202310376118 A CN202310376118 A CN 202310376118A CN 116102109 A CN116102109 A CN 116102109A
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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
- C02F1/043—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/0804—Cleaning containers having tubular shape, e.g. casks, barrels, drums
- B08B9/0808—Cleaning containers having tubular shape, e.g. casks, barrels, drums by methods involving the use of tools, e.g. by brushes, scrapers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/0856—Cleaning of water-treatment installations
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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
- C02F1/048—Purification of waste water by evaporation
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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
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention belongs to the technical field of wastewater treatment, in particular to a high-salt wastewater recycling and reutilizing treatment process, which comprises the following steps: performing primary filtration and flocculation treatment on the high-salt wastewater, and performing evaporation concentration by using a recovery device to obtain concentrated crystal slurry and distilled water; performing solid-liquid separation on the crystal slurry to obtain salt crystals and mother liquor; the mother liquor is added again and enters a recovery device for evaporation concentration; the recovery device comprises a tank body, an upper cover is arranged on the tank body, a rotating shaft is arranged in the tank body, a stirring sheet is arranged on the rotating shaft, a scraping plate is arranged on the rotating shaft through a connecting rod, and a groove is formed in the side surface, facing the inner wall of the tank body, of the scraping plate; the invention has simple structure, can remove salt crystals or salt scales attached to the inner wall of the tank body, is convenient for subsequent staff to clean the recovery device, and improves the precipitation rate and the extraction amount of waste salt, thereby improving the recycling rate of waste salt resources in wastewater.
Description
Technical Field
The invention belongs to the technical field of wastewater treatment, and particularly relates to a high-salt wastewater recycling and reutilizing treatment process.
Background
The wastewater treatment is to treat the wastewater by using physical, chemical and biological methods, separate out or convert pollutants in the wastewater into harmless substances, purify the wastewater, reduce pollution so as to achieve wastewater recovery and reuse, fully utilize water resources, recycle salt resources separated out from the wastewater, and reduce waste and pollution of high-salt wastewater to the environment.
When the existing waste water recycling and waste salt device is used, a large amount of salt scale is attached to the inner wall of the device, the attached salt scale influences heat transfer, precipitation efficiency of waste salt is reduced, the attached salt scale influences the amount of the waste salt taken out by workers, and the utilization rate of the waste salt is reduced.
Meanwhile, after the precipitation of the waste salt, the staff needs to clean the device for recovering the waste salt, the existing cleaning is mainly an acid cleaning mode, and in the cleaning process, if more salt scale is attached to the inner wall of the recovery device, the staff needs to repeatedly clean in order to ensure that the inner wall of the evaporator is free of attached scale, so that the cleaning is inconvenient.
Disclosure of Invention
In order to make up for the defects of the prior art, salt crystals or salt scales attached to the inner wall of the tank body are removed, so that subsequent staff can conveniently clean the recovery device, the precipitation rate and the extraction amount of waste salt are improved, and the recycling rate of waste salt resources in waste water is improved.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a recycling treatment process for high-salt wastewater, which comprises the following steps:
performing primary filtration and flocculation treatment on the high-salt wastewater, and performing evaporation concentration by using a recovery device to obtain concentrated crystal slurry and distilled water;
performing solid-liquid separation on the crystal slurry to obtain salt crystals and mother liquor;
the mother liquor is added again and enters a recovery device for evaporation concentration;
the recovery device comprises a tank body, an upper cover is arranged on the tank body, a rotating shaft is arranged in the tank body, a stirring sheet is arranged on the rotating shaft, a motor is arranged on the upper cover, the motor drives the rotating shaft to move, a steam pipe is arranged on the upper cover, and a feed pipe and a discharge pipe are arranged on the tank body; the distilled water is obtained by cooling the steam discharged from a steam pipe on the recovery device; the mother liquor is added into the recovery device again after heat exchange and temperature rise are carried out by utilizing steam flowing in the steam pipe; the scraper blade is installed through the connecting rod in the pivot, the scraper blade is hugged closely on jar body inner wall, the scraper blade has seted up the recess on the side of jar body inner wall towards, the lateral wall height that the recess is located scraper blade direction of motion the place ahead is less than the lateral wall height of opposite side on the recess.
Preferably, the side wall of the groove is provided with bristles, the bristles are positioned on the side wall in front of the scraper in the advancing direction, and the bristles contact the inner wall of the tank body.
Preferably, the scraping plate is provided with cutters which are parallel to each other, the cutters are clung to the inner wall of the tank body, the cutters and the bristles are positioned on the same side face, and the cutters are positioned in front of the bristles.
Preferably, the stirring piece promotes the internal liquid of jar and moves downwards, install the plectane in the pivot, the plectane is located the below of stirring piece, evenly seted up the through hole on the plectane, the diameter of through hole is greater than the diameter of the salt crystallization that appears in the jar body.
Preferably, the inner wall of the tank body is provided with a ring groove, a closed space is formed between the ring groove and the inner wall of the tank body, a through hole is formed in the lower surface of the ring groove, a groove on the scraping plate is aligned with the through hole, and the feeding pipe is communicated into the closed space.
Preferably, the upper cover is connected with the tank body through bolts, an output shaft of the motor is connected with the rotating shaft through a fixing sleeve through threads, a positioning block is mounted on the bottom surface of the tank body, and the positioning block is inserted into the lower end surface of the rotating shaft.
Preferably, the connecting rod comprises a movable part and a fixed part, the fixed part is arranged on the rotating shaft, a mounting hole is formed in the fixed part, a connecting spring is arranged in the mounting hole, a movable rod is slidably arranged in the mounting hole, the other end of the movable rod is connected to the movable part, and two ends of the connecting spring are respectively fixedly connected to the bottom surface of the mounting hole and the end surface of the movable rod.
Preferably, the connecting spring is made of memory metal, and the scraping plate contacts and clings to the inner wall of the tank body after the temperature of the connecting spring exceeds the threshold value.
The beneficial effects of the invention are as follows:
1. according to the recycling treatment process for the high-salinity wastewater, provided by the invention, the rotating shaft, the positioning block, the connecting spring and the fixing sleeve are arranged, so that a worker can conveniently detach, clean and reinstall the recovery device, and the condition that the dead angle of the structure in the recovery device is difficult to clean and the subsequent normal use of the recovery device is influenced is avoided.
2. According to the recycling and reutilizing treatment process for the high-salt wastewater, the scraping plates, the grooves, the cutters and the bristles are arranged to clean salt crystals attached to the inner wall of the tank body, and the cleaned salt crystals can quickly reach the discharge pipe to be discharged, so that the salt crystals are prevented from being reattached to the inner wall of the tank body, the heat exchange of liquid in the tank body, the precipitation efficiency of waste salt of the salt crystals and the extraction amount of the waste salt by staff are prevented, and the utilization rate of the waste salt in the high-salt wastewater is improved.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a front view of a recovery device used in the treatment process of the present invention;
FIG. 2 is a cross-sectional view of a recovery device used in the treatment process of the present invention;
FIG. 3 is a schematic view of the structure of a scraper in a recovery device used in the treatment process of the present invention;
FIG. 4 is a schematic view of the structure of the connecting rod in the recovery device used in the treatment process of the present invention;
FIG. 5 is a schematic view of the structure of the ring groove in the recycling device used in the treatment process of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 2 at A;
FIG. 7 is an enlarged view of a portion of FIG. 2 at B;
FIG. 8 is an enlarged view of a portion of FIG. 3 at C;
FIG. 9 is a flow chart of the steps of the treatment process of the present invention;
in the figure: tank 1, positioning block 11, discharging pipe 12, feeding pipe 13, heating coil 14, upper cover 2, motor 21, fixed sleeve 211, steam pipe 22, rotating shaft 3, stirring piece 31, circular plate 32, scraping plate 4, brush hair 41, cutter 42, connecting rod 5, movable part 51, fixed part 52, moving rod 53, connecting spring 54, ring groove 6 and through hole 61.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 9, the high-salt wastewater recycling and reutilizing treatment process provided by the invention comprises the following steps:
performing primary filtration and flocculation treatment on the high-salt wastewater, and performing evaporation concentration by using a recovery device to obtain concentrated crystal slurry and distilled water; before recycling the high-salt wastewater, firstly, primarily filtering the high-salt wastewater to remove larger impurities contained in the wastewater, reducing the difficulty of subsequent treatment, simultaneously, adding a flocculating agent into the high-salt wastewater or treating the wastewater by using other physical means to remove suspended matters contained in the wastewater as much as possible, so that the wastewater is relatively pure, the influence of the impurities or suspended matters contained in the wastewater is avoided when the subsequent evaporation concentration is carried out, the recovery device cannot work normally, and meanwhile, the distilled water obtained after the evaporation concentration is recycled and then applied to production again, thereby improving the water resource utilization rate and reducing the waste;
performing solid-liquid separation on the crystal slurry to obtain salt crystals and mother liquor;
the mother liquor is added again and enters a recovery device for evaporation concentration; the filtered mother liquor is added into the recovery device again for evaporation concentration, so that salt contained in the wastewater can be effectively and fully separated, the recovered salt can be reused, the resource utilization rate is improved, and the pollution to the environment is reduced;
the recovery device comprises a tank body 1, an upper cover 2 is arranged on the tank body 1, a rotating shaft 3 is arranged in the tank body 1, a stirring sheet 31 is arranged on the rotating shaft 3, a motor 21 is arranged on the upper cover 2, the motor 21 drives the rotating shaft 3 to move, a steam pipe 22 is arranged on the upper cover 2, and a feed pipe 13 and a discharge pipe 12 are arranged on the tank body 1; when the recovery device works, the motor 21 drives the rotating shaft 3 to move, so that the stirring sheets 31 on the rotating shaft 3 synchronously move to stir the liquid in the tank body 1, so that the liquid is relatively uniform, and evaporation and concentration are facilitated;
the distilled water is obtained by cooling the steam discharged from the steam pipe 22 on the recovery device; the mother liquor is added into the recovery device again after heat exchange and temperature rise are carried out by utilizing the steam flowing in the steam pipe 22; when the recovery device performs evaporation concentration treatment, certain water vapor is generated, the water vapor is cooled to obtain distilled water which can be reused, so that the resource utilization rate is improved, the water resource waste is reduced, meanwhile, the heat contained in the water vapor heats the mother liquor obtained by filtering in a heat exchange mode, the temperature of the mother liquor is relatively high, the influence on the normal operation of the recovery device after the mother liquor with lower temperature is added into the recovery device again is avoided, meanwhile, the water vapor is utilized to heat the mother liquor, the secondary utilization of the heat is improved, and the heat in the water vapor is prevented from being directly emitted into the environment to cause waste;
the scraper 4 is mounted on the rotating shaft 3 through a connecting rod 5, the scraper 4 is tightly attached to the inner wall of the tank body 1, a groove is formed in the side surface of the scraper 4 facing the inner wall of the tank body 1, and the height of the side wall of the groove, which is positioned at the front part of the scraper 4 in the moving direction, is lower than that of the side wall of the other side of the groove;
when the recovery device is used, the scraper 4 connected to the rotating shaft 3 moves along the inner wall of the tank body 1, salt crystals adhered to the inner wall of the tank body 1 are removed by utilizing the contact between the scraper 4 and the inner wall of the tank body 1, so that when the recovery device works, high-salt wastewater in the tank body 1 splashes to the inner wall above the liquid level to generate salt crystals and adheres to the inner wall of the tank body 1, the collection of the salt crystals and the subsequent cleaning of the recovery device are influenced, meanwhile, after the crystals generated after the high-salt wastewater is evaporated and concentrated are adhered to the inner wall of the tank body 1, the scraper 4 can be used for cleaning, the phenomenon that the salt crystals or salt scales are adhered to the inner wall of the tank body 1, and the heat exchange between the high-salt wastewater and the heating coil 14 in the inner wall of the tank body 1 is further avoided, so that potential safety hazards occur and normal work of the recovery device is threatened, the scraper 4 is used for cleaning salt crystals or salt scales attached to the inner wall of the tank body 1, so that the precipitation efficiency of waste salt in high-salt wastewater and the extraction amount of waste salt by workers are ensured, the utilization rate of waste salt in the salt wastewater is improved, meanwhile, the salt crystals or salt scales cleaned by the scraper 4 from the inner wall of the tank body 1 can enter the groove and move downwards along the groove through the groove arranged on the scraper 4, in addition, as the lower end of the scraper 4 is close to the discharge pipe 12 on the tank body 1, the salt crystals or salt scales falling along the groove can directly reach the vicinity of the discharge pipe 12, and then are relatively quickly discharged out of the recovery device from the discharge pipe 12, so that the salt crystals or salt scales cleaned from the inner wall of the tank body 1 by the scraper 4 are prevented from staying in the tank body 1 for a long time, and are prevented from being contacted with the inner wall of the tank body 1 again and being attached again, the normal operation of the recovery device is affected.
As one embodiment of the invention, the side wall of the groove is provided with bristles 41, the bristles 41 are positioned on the side wall in front of the scraper 4 in the advancing direction, and the bristles 41 contact the inner wall of the tank 1;
through setting up the brush hair 41 on the lower relatively high lateral wall on the recess for constitute a relatively confined space or passageway between recess, brush hair 41 and the inner wall of jar body 1, make salt crystallization or salt scale that is cleared up on the inner wall of jar body 1 drop near discharging pipe 12 along the recess smoothly, avoid the salt crystallization that removes along the recess or salt scale to receive the influence that liquid flows in jar body 1 and leave the recess in the midway, simultaneously, because brush hair 41 is soft relatively, when scraper blade 4 rotates along jar body 1 inner wall, brush hair 41 can cross salt crystallization or salt scale that exists on jar body 1 inner wall, make salt crystallization or salt scale scrape down by the higher relatively high lateral wall on the recess, so that salt crystallization or salt scale directly get into the recess after being scraped down, simultaneously, through the contact between brush hair 41 and jar body 1 inner wall, can utilize the brush hair 41 to clear up the salt crystallization that is relatively less attached to on jar body 1 inner wall, the salt crystallization that adheres to not firm, make it drop into jar body 1 in the liquid crystal, the paddle crystal volume that is followed by the crystal is removed, and the crystal paddle crystal is separated, can be continued to the mode that separates afterwards, the crystal is separated, can be continued to be discharged, the crystal size is improved.
As an embodiment of the present invention, the scraping plate 4 is provided with cutters 42, the cutters 42 are parallel to each other, the cutters 42 are tightly attached to the inner wall of the tank 1, the cutters 42 and the bristles 41 are positioned on the same side, and the cutters 42 are positioned in front of the bristles 41;
the cutter 42 positioned on the scraper 4 cuts and slides the salt crystals or salt scales attached to the inner wall of the tank body 1 before the scraper 4 passes through, so that the salt crystals or salt scales attached to the inner wall of the tank body 1 are cleaned by the subsequent scraper 4, the adhesion between the salt crystals or salt scales and the inner wall of the tank body 1 is avoided, the normal operation of the scraper 4 is influenced, and meanwhile, the cutter 42 is distributed on the scraper 4 in parallel, so that the cut salt crystals or salt scales are relatively smaller when the salt crystals or salt scales on the inner wall of the tank body 1 are cut, the salt crystals or salt scales are cleaned when the scraper 4 passes through, and the salt crystals or salt scales attached to the inner wall of the tank body 1 are avoided or reduced, so that the normal operation of a recovery device and the cleaning of the recovery device are facilitated.
As an embodiment of the present invention, the stirring plate 31 pushes the liquid in the tank 1 to move downward, the rotating shaft 3 is provided with a circular plate 32, the circular plate 32 is located below the stirring plate 31, and the circular plate 32 is uniformly provided with through holes, and the diameter of the through holes is larger than the diameter of salt crystals in the tank 1;
when the recovery device works, the stirring piece 31 on the rotating shaft 3 can stir the liquid in the tank body 1, so that the liquid in the tank body 1 moves downwards, meanwhile, the circular plate 32 arranged on the rotating shaft 3 can prevent the liquid moving downwards under the action of the stirring piece 31 from flowing everywhere in the tank body 1, so that the stirring piece 31 is prevented from stirring unidirectionally in the tank body 1 as much as possible to generate vortex in the liquid in the tank body 1, salt or other impurities in the liquid are collected, further evaporation and concentration of waste water are not facilitated, the normal work of the recovery device is influenced, meanwhile, the circular plate 32 is uniformly provided with through holes, so that the liquid in the tank body 1 passes through the circular plate 32 to a certain extent, mutual communication between the upper part and the lower part of the liquid in the tank body 1 is ensured, the components in each part of the liquid are relatively uniform, and evaporation and concentration are facilitated.
As an embodiment of the present invention, the inner wall of the tank body 1 is provided with a ring groove 6, a closed space is formed between the ring groove 6 and the inner wall in the tank body 1, a through hole 61 is formed on the lower surface of the ring groove 6, a groove on the scraper 4 is aligned with the through hole 61, and the feeding pipe 13 is communicated into the closed space;
because the feed pipe 13 is communicated with the closed space formed between the annular groove 6 and the inner wall of the tank body 1, the high-salt wastewater or the newly added mother liquor fed from the feed pipe 13 firstly enters the closed space and then flows downwards from the through hole 61, in the process, the high-salt wastewater or the newly added mother liquor discharged from the through hole 61 flows downwards along the inner wall of the tank body 1, a scouring effect is generated on salt crystals or salt scales attached to the inner wall of the tank body 1 to a certain extent, the salt crystals or salt scales leave the inner wall of the tank body 1, the working pressure of the scraping plate 4 is reduced, meanwhile, the liquid flowing down along the inner part of the tank body 1 can be more easily subjected to heat exchange with the heating coil 14 in the inner wall of the tank body 1, the evaporation concentration effect and efficiency are improved, and simultaneously, because the upper end of scraper blade 4 hugs closely each other with the lower surface of annular 6, in the in-process of scraper blade 4 motion, the liquid that discharges from in through-hole 61 can enter into the recess on scraper blade 4, produce the scouring action to salt crystallization or salt scale that exists in the recess for salt crystallization or salt scale in the recess reaches the bottom in jar body 1 smoothly, avoid salt scale or salt crystallization to appear crowding up in the recess, influence the normal work of recess, simultaneously, because install brush hair 41 on the lateral wall of recess, when the liquid that discharges in through-hole 61 is washed into the recess, liquid can be followed brush hair 41 department and the liquid in jar body 1 is produced the exchange gradually, avoid this part liquid directly to reach the discharging pipe 12 of jar body 1 bottom nearby and be discharged, influence recovery unit's work effect.
As an embodiment of the present invention, the upper cover 2 and the tank 1 are connected with each other by a bolt, the output shaft of the motor 21 is connected with the rotating shaft 3 by a fixing sleeve 211 by using a thread, the bottom surface of the tank 1 is provided with a positioning block 11, and the positioning block 11 is inserted into the lower end surface of the rotating shaft 3;
when cleaning recovery unit, the staff loosens the bolt between upper cover 2 and the jar body 1 to make upper cover 2 and jar body 1 separation, afterwards, through rotating fixed sleeve 211 or pivot 3, make the separation between upper cover 2 and the pivot 3, make things convenient for the staff to separate upper cover 2, jar body 1 and pivot 3 each other, thereby clean recovery unit, simultaneously, because install locating piece 11 on the bottom surface in jar body 1, and locating piece 11 inserts on the lower terminal surface of pivot 3, when using recovery unit, the staff puts into jar body 1 earlier with pivot 3, and make mutually supporting between pivot 3 and the locating piece 11, afterwards place jar body 1 top with upper cover 2 that has motor 21, with the output shaft interconnect of pivot 3 and motor 21, then fix each other through the bolt between upper cover 2 and the jar body 1, accomplish recovery unit's the equipment again, through the cooperation between locating piece 11 and the pivot 3, avoid the recovery unit of reassembleing, the position of pivot 3 is inconvenient for control, the normal degree of difficulty of influence staff's operation, increase recovery unit's installation.
As an embodiment of the present invention, the connecting rod 5 includes a movable portion 51 and a fixed portion 52, the fixed portion 52 is mounted on the rotating shaft 3, a mounting hole is formed in the fixed portion 52, a connecting spring 54 is mounted in the mounting hole, a moving rod 53 is slidably mounted in the mounting hole, the other end of the moving rod 53 is connected to the movable portion 51, and two ends of the connecting spring 54 are respectively fixedly connected to the bottom surface of the mounting hole and the end surface of the moving rod 53;
because scraper 4 passes through connecting rod 5 to be installed on pivot 3, simultaneously, movable part 51 and fixed part 52 on the connecting rod 5 are connected through connecting spring 54 and movable rod 53 between the two, thereby under connecting spring 54's effect, make scraper 4 hug closely on jar body 1's inner wall, effectually clear away salt crystallization or salt scale that adheres to on jar body 1 inner wall, simultaneously, because connecting spring 54's effect, when scraper 4 runs into salt crystallization or salt scale and bonding between jar body 1 inner wall too closely, scraper 4 can take place to remove, thereby cross this salt crystallization or salt scale, avoid scraper 4 to clear away this salt crystallization or salt scale by force, lead to the damage of other parts in scraper 4 or the recovery unit, influence recovery unit's normal use.
As one embodiment of the invention, the connecting spring 54 is made of memory metal, and the scraping plate 4 contacts and clings to the inner wall of the tank body 1 after the temperature of the connecting spring 54 exceeds the threshold value;
because the connecting spring 54 is made of memory metal, before the recovery device is used, the temperature of the connecting spring 54 is relatively low, so that the distance between the scraping plate 4 and the rotating shaft 3 is relatively short, when the recovery device is reassembled by a worker, a relatively large distance exists between the scraping plate 4 and the inner wall of the tank body 1, the rotating shaft 3 and the scraping plate 4 are conveniently placed into the tank body 1 by the worker, so that the recovery device is conveniently reassembled by the worker, meanwhile, when the recovery device works, the temperature of the inside of the recovery device is relatively high, the temperature of the connecting spring 54 gradually exceeds the deformation threshold value of the recovery device, and then the scraping plate 4 moves towards the direction far away from the rotating shaft 3 under the pushing of the connecting spring 54, so that the scraping plate 4 and the inner wall of the tank body 1 are guaranteed to be mutually clung, and salt crystals or salt scales attached to the inner wall of the tank body 1 are cleaned.
The specific working procedure is as follows:
before recycling the high-salt wastewater, firstly, primarily filtering the high-salt wastewater, and simultaneously, adding a flocculating agent into the high-salt wastewater or treating the high-salt wastewater by using other physical means to remove suspended matters contained in the wastewater as much as possible, and simultaneously, recycling distilled water obtained after evaporation and concentration and then re-applying the distilled water to production;
the filtered mother liquor is added into a recovery device again for evaporation concentration, salt contained in the wastewater is separated out, and the recovered salt is reused;
when the recovery device works, the motor 21 drives the rotating shaft 3 to move, so that the stirring sheets 31 on the rotating shaft 3 synchronously move to stir the liquid in the tank body 1, so that the liquid is relatively uniform, and evaporation and concentration are facilitated;
when the recovery device performs evaporation concentration treatment, certain water vapor is generated, the water vapor is cooled to obtain reusable distilled water, meanwhile, heat contained in the water vapor heats mother liquor obtained by filtration in a heat exchange mode, so that the temperature of the mother liquor is relatively high, and meanwhile, the water vapor is utilized to heat the mother liquor, so that the secondary utilization of the heat is improved;
when the recovery device is used, the scraper 4 connected to the rotating shaft 3 moves along the inner wall of the tank body 1, salt crystals adhered to the inner wall of the tank body 1 are removed by utilizing the contact between the scraper 4 and the inner wall of the tank body 1, meanwhile, after the crystals generated after evaporation and concentration of high-salt wastewater are adhered to the inner wall of the tank body 1, the crystals or salt scales adhered to the inner wall of the tank body 1 can be cleaned through the scraper 4, the heat exchange between the high-salt wastewater and the heating coil 14 in the inner wall of the tank body 1 is further avoided, in addition, the precipitation efficiency of the waste salt in the high-salt wastewater and the extraction amount of the waste salt by workers are ensured by the scraper 4, the utilization rate of the waste salt in the salt wastewater is improved, meanwhile, the salt crystals or the salt scales cleaned by the scraper 4 from the inner wall of the tank body 1 can enter the groove and move downwards along the groove, and in addition, the lower end of the scraper 4 is close to the upper pipe 12 of the tank body 1, so that the salt crystals or the salt scales can be discharged from the pipe 12 relatively quickly along the groove or the lower pipe 12 to the discharge pipe 12 and further be recovered;
through the bristles 41 arranged on the side wall with relatively lower height on the groove, a relatively closed space or channel is formed among the groove, the bristles 41 and the inner wall of the tank body 1, so that salt crystals or salt scales cleaned on the inner wall of the tank body 1 can smoothly fall near the discharging pipe 12 along the groove, and the salt crystals or salt scales moving along the groove are prevented from being influenced by the flow of liquid in the tank body 1 to leave the groove in the middle;
the cutter 42 positioned on the scraping plate 4 cuts and slides the salt crystals or salt scales attached to the inner wall of the tank body 1 before the scraping plate 4 passes through, so that the salt crystals or salt scales attached to the inner wall of the tank body 1 can be cleaned by the subsequent scraping plate 4, and the phenomenon that the adhesion between the salt crystals or salt scales and the inner wall of the tank body 1 is too tight to influence the normal operation of the scraping plate 4 is avoided;
when the recovery device works, the stirring piece 31 on the rotating shaft 3 can stir the liquid in the tank body 1, so that the liquid in the tank body 1 moves downwards, meanwhile, the liquid which moves downwards under the action of the stirring piece 31 is blocked by the circular plate 32 arranged on the rotating shaft 3, so that the liquid flows around in the tank body 1, the stirring piece 31 is prevented from unidirectional stirring in the tank body 1 as much as possible, so that vortex is generated in the liquid in the tank body 1, salt or other impurities in the liquid are gathered, further evaporation and concentration of waste water are not facilitated, meanwhile, through holes are uniformly formed in the circular plate 32, the liquid in the tank body 1 can pass through the circular plate 32 to a certain extent, and mutual communication between the upper part and the lower part of the liquid in the tank body 1 is ensured;
because the feed pipe 13 is communicated to the closed space formed between the annular groove 6 and the inner wall of the tank body 1, high-salt wastewater or newly added mother liquor fed from the feed pipe 13 can enter the closed space firstly and then downwards flows out of the through hole 61, in the process, the high-salt wastewater or newly added mother liquor discharged from the through hole 61 can downwards flow along the inner wall of the tank body 1, a scouring effect is generated on salt crystals or salt scales attached to the inner wall of the tank body 1 to a certain extent, meanwhile, liquid flowing down along the inner wall of the tank body 1 can be easier to exchange heat with the heating coil 14 in the inner wall of the tank body 1, meanwhile, because the upper end of the scraper 4 is mutually clung to the lower surface of the annular groove 6, in the process of moving the scraper 4, the discharged liquor from the through hole 61 can enter the groove on the scraper 4, and the scouring effect is generated on the salt crystals or salt scales existing in the groove, so that the salt crystals or salt scales in the groove smoothly reach the bottom in the tank body 1;
when the recovery device is cleaned, a worker loosens a bolt between the upper cover 2 and the tank body 1, so that the upper cover 2 is separated from the tank body 1, then the upper cover 2 and the rotating shaft 3 are separated by rotating the fixing sleeve 211 or the rotating shaft 3, the worker conveniently separates the upper cover 2, the tank body 1 and the rotating shaft 3 from each other, so that the recovery device is cleaned, meanwhile, as the positioning block 11 is arranged on the bottom surface in the tank body 1 and the positioning block 11 is inserted into the lower end surface of the rotating shaft 3, when the recovery device is used, the worker firstly places the rotating shaft 3 into the tank body 1, the rotating shaft 3 and the positioning block 11 are mutually matched, then the upper cover 2 with the motor 21 is placed above the tank body 1, the rotating shaft 3 and an output shaft of the motor 21 are mutually connected, and then the upper cover 2 and the tank body 1 are mutually fixed through the bolt, so that the recovery device is reassembled;
the scraper 4 is arranged on the rotating shaft 3 through the connecting rod 5, and meanwhile, the movable part 51 and the fixed part 52 on the connecting rod 5 are connected through the connecting spring 54 and the moving rod 53, so that the scraper 4 is tightly attached to the inner wall of the tank body 1 under the action of the connecting spring 54, and meanwhile, under the action of the connecting spring 54, when the scraper 4 contacts salt crystals or salt scales and the inner wall of the tank body 1, the scraper 4 moves so as to cross the salt crystals or the salt scales;
because the connecting spring 54 is made of memory metal, before the recovery device is used, the temperature of the connecting spring 54 is relatively low, so that the distance between the scraping plate 4 and the rotating shaft 3 is relatively short, when the recovery device is reassembled by a worker, a relatively large distance exists between the scraping plate 4 and the inner wall of the tank body 1, the worker can conveniently put the rotating shaft 3 and the scraping plate 4 into the tank body 1, meanwhile, when the recovery device works, the temperature in the recovery device is relatively high, the temperature of the connecting spring 54 gradually exceeds the deformation threshold value of the connecting spring 54, and then the scraping plate 4 moves towards the direction far away from the rotating shaft 3 under the pushing of the connecting spring 54, so that the mutual adhesion between the scraping plate 4 and the inner wall of the tank body 1 is ensured.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A high-salinity wastewater recycling treatment process comprises the following steps:
performing primary filtration and flocculation treatment on the high-salt wastewater, and performing evaporation concentration by using a recovery device to obtain concentrated crystal slurry and distilled water;
performing solid-liquid separation on the crystal slurry to obtain salt crystals and mother liquor;
the mother liquor is added again and enters a recovery device for evaporation concentration;
the recovery device comprises a tank body (1), an upper cover (2) is arranged on the tank body (1), a rotating shaft (3) is arranged in the tank body (1), a stirring sheet (31) is arranged on the rotating shaft (3), a steam pipe (22) is arranged on the upper cover (2), and a feed pipe (13) and a discharge pipe (12) are arranged on the tank body (1);
the method is characterized in that: the distilled water is obtained by cooling the steam discharged from a steam pipe (22) on the recovery device; the mother liquor is added into the recovery device again after heat exchange and temperature rise are carried out by utilizing steam flowing in the steam pipe (22);
the scraper (4) is mounted on the rotating shaft (3) through a connecting rod (5), the scraper (4) is tightly attached to the inner wall of the tank body (1), a groove is formed in the side surface of the scraper (4) facing the inner wall of the tank body (1), and the height of the side wall of the groove, which is positioned at the front part in the moving direction of the scraper (4), is lower than that of the side wall of the other side of the groove;
the side wall of the groove is provided with bristles (41), the bristles (41) are positioned on the side wall in front of the scraper (4) in the advancing direction, and the bristles (41) are contacted with the inner wall of the tank body (1).
2. The high-salinity wastewater recycling treatment process according to claim 1, which is characterized in that: the scraping plate (4) is provided with cutters (42), the cutters (42) are parallel to each other, the cutters (42) are tightly attached to the inner wall of the tank body (1), the cutters (42) and the bristles (41) are located on the same side face, and the cutters (42) are located in front of the bristles (41).
3. The high-salinity wastewater recycling treatment process according to claim 1, which is characterized in that: the stirring blade pushes liquid in the tank body (1) to move downwards, a circular plate (32) is arranged on the rotating shaft (3), the circular plate (32) is positioned below the stirring blade, and through holes are uniformly formed in the circular plate (32).
4. The recycling and reutilizing treatment process for high-salinity wastewater, which is characterized by comprising the following steps of: the novel scraper is characterized in that an annular groove (6) is arranged on the inner wall of the tank body (1), a closed space is formed between the annular groove (6) and the inner wall in the tank body (1), a through hole (61) is formed in the lower surface of the annular groove (6), a groove on the scraper (4) is aligned with the through hole (61), and the feeding pipe (13) is communicated into the closed space.
5. The high-salinity wastewater recycling treatment process according to claim 1, which is characterized in that: the upper cover (2) is connected with the tank body (1) through bolts, an output shaft of the motor (21) is connected with the rotating shaft (3) through a fixing sleeve (211) through threads, a positioning block (11) is arranged on the bottom surface of the tank body (1), and the positioning block (11) is inserted into the lower end surface of the rotating shaft (3).
6. The recycling treatment process for high-salinity wastewater according to claim 5, which is characterized in that: connecting rod (5) are including movable part (51) and fixed part (52), fixed part (52) are installed on pivot (3), the mounting hole has been seted up on fixed part (52), install connecting spring (54) in the mounting hole, movable rod (53) are installed to the downthehole slip of mounting, the other end of movable rod (53) is connected on movable part (51), the both ends of connecting spring (54) link firmly respectively on the bottom surface of mounting hole and the terminal surface of movable rod (53).
7. The recycling and reutilizing treatment process of high-salt wastewater, which is characterized in that: the connecting spring (54) is made of memory metal, and the scraping plate (4) is contacted and clung to the inner wall of the tank body (1) after the temperature of the connecting spring (54) exceeds the threshold value.
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| CN202310376118.3A CN116102109B (en) | 2023-04-11 | 2023-04-11 | Recycling recycling treatment process for high-salinity wastewater |
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| CN202310376118.3A CN116102109B (en) | 2023-04-11 | 2023-04-11 | Recycling recycling treatment process for high-salinity wastewater |
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Citations (6)
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|---|---|---|---|---|
| EP2251282A1 (en) * | 2009-05-12 | 2010-11-17 | Peter Hoessl | Scraper for a conveyor belt |
| CN208082462U (en) * | 2018-01-20 | 2018-11-13 | 盐城泛安化学有限公司 | A kind of reaction kettle that can improve compounding effect and the efficiency that discharges |
| CN212075137U (en) * | 2020-02-21 | 2020-12-04 | 张帅 | Storage device for emulsified asphalt |
| CN215785467U (en) * | 2021-07-29 | 2022-02-11 | 黄石星河电路有限公司 | Shovel ink knife for recycling residual blue gel ink |
| CN217221480U (en) * | 2022-03-21 | 2022-08-19 | 上海多森化工有限公司 | Reaction kettle for producing high-foaming type foaming agent |
| CN217650933U (en) * | 2022-05-25 | 2022-10-25 | 合肥合意环保科技工程有限公司 | High-efficient type high salt waste water evaporation plant |
-
2023
- 2023-04-11 CN CN202310376118.3A patent/CN116102109B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2251282A1 (en) * | 2009-05-12 | 2010-11-17 | Peter Hoessl | Scraper for a conveyor belt |
| CN208082462U (en) * | 2018-01-20 | 2018-11-13 | 盐城泛安化学有限公司 | A kind of reaction kettle that can improve compounding effect and the efficiency that discharges |
| CN212075137U (en) * | 2020-02-21 | 2020-12-04 | 张帅 | Storage device for emulsified asphalt |
| CN215785467U (en) * | 2021-07-29 | 2022-02-11 | 黄石星河电路有限公司 | Shovel ink knife for recycling residual blue gel ink |
| CN217221480U (en) * | 2022-03-21 | 2022-08-19 | 上海多森化工有限公司 | Reaction kettle for producing high-foaming type foaming agent |
| CN217650933U (en) * | 2022-05-25 | 2022-10-25 | 合肥合意环保科技工程有限公司 | High-efficient type high salt waste water evaporation plant |
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