CN111635056A - Desulfurization wastewater treatment process and transfer device for same - Google Patents
Desulfurization wastewater treatment process and transfer device for same Download PDFInfo
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- CN111635056A CN111635056A CN202010508152.8A CN202010508152A CN111635056A CN 111635056 A CN111635056 A CN 111635056A CN 202010508152 A CN202010508152 A CN 202010508152A CN 111635056 A CN111635056 A CN 111635056A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/48—Sulfites
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention relates to a desulfurization wastewater treatment process, which comprises the following steps: s1, collecting and collecting the desulfurization wastewater; s2, forced reaction, and sufficient oxygen is introduced into the desulfurization wastewater; s3, carrying out evaporation separation, and evaporating the desulfurization wastewater to obtain a sulfur-containing solid; and S4, storing, collecting sulfur-containing solid and storing. The invention has the effect of efficiently treating and recycling the desulfurization wastewater.
Description
Technical Field
The invention relates to the technical field of flue gas treatment, in particular to a desulfurization wastewater treatment process and a transfer device for the process.
Background
At present, one main direction of flue gas treatment is to remove sulfur elements in flue gas, and generally, the removal of the sulfur elements is performed by using a wet method, a semi-dry method and a dry method, wherein wet desulfurization is the method with the highest desulfurization efficiency among all methods and is far higher than other two methods, so that the wet desulfurization is the most commonly used method under the situation that the environmental protection requirement is increasingly strict; after wet desulphurization, desulphurization waste water is generated, and the waste water contains a large amount of sulfur elements and is a difficult point in the desulphurization process.
The existing technical scheme can refer to Chinese invention patent with application publication number CN111087065A, which discloses a desulfurization wastewater treatment device, comprising a middle box body, wherein a through inner cavity is arranged in the middle box body, a bottom box fixed with the middle box body is arranged at the lower side of the middle box body, an open storage inner cavity is arranged in the bottom box, a rotating motor is fixedly arranged in the lower end wall of the storage inner cavity, an output shaft is arranged at the upper side of the rotating motor in a power connection manner, rotating fan blades are fixedly arranged on the upper end surface of the output shaft and are positioned in the storage inner cavity, and a circulating device which is used for circulating and freely falling sulfur-containing wastewater is arranged in the storage inner cavity and the inner cavity.
The above prior art solutions have the following drawbacks: at present, the desulfurization wastewater is treated by an oxidation method, but the desulfurization wastewater is already in a liquid form after being treated by the oxidation method, is difficult to store and treat, and cannot be utilized.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a desulfurization wastewater treatment process capable of efficiently treating and recycling desulfurization wastewater.
The above object of the present invention is achieved by the following technical solutions:
a desulfurization wastewater treatment process comprises the following steps:
s1, collecting and collecting the desulfurization wastewater;
s3, carrying out evaporation separation, and evaporating the desulfurization wastewater to obtain a sulfur-containing solid;
and S4, storing, collecting sulfur-containing solid and storing.
By adopting the technical scheme, after the desulfurization step, when the desulfurization wastewater is obtained, the desulfurization wastewater is evaporated, so that a mixture of calcium sulfate and calcium sulfite solids can be obtained, the calcium sulfate solids can be used as a production raw material of an epoxy resin adhesive or gypsum, the sulfur-containing solids can be stored to conveniently carry out secondary utilization on the solids, and the situations of environmental pollution and resource waste are avoided.
The present invention in a preferred example may be further configured to: the step of forcing the reaction further comprises:
s2, forced reaction, and sufficient oxygen is introduced into the desulfurization wastewater;
s2.1, collecting educts of the desulfurization wastewater;
s2.2, drying the precipitate;
s2.3, collecting and storing precipitates.
By adopting the technical scheme, sufficient oxygen is introduced into the desulfurization wastewater, calcium sulfite can be maximally oxidized into calcium sulfate, and then the calcium sulfate is slightly soluble in water, so that the calcium sulfate can be separated out in a crystal form after reaching saturation when the calcium sulfite is oxidized, the separated out matter is collected, high-purity calcium sulfate can be obtained, compared with the finally obtained sulfur-containing solid, the separated out matter can be completely calcium sulfate, and the calcium sulfate can be conveniently used after being separately collected and stored.
The present invention in a preferred example may be further configured to: the evaporation separation step specifically comprises:
s3.1, introducing the desulfurization wastewater into a desulfurization tower;
s3.2, atomizing the desulfurization wastewater and spraying the desulfurization wastewater into a desulfurization tower;
s3.3, increasing the temperature in the desulfurizing tower;
s3.4, exhausting the evaporation gas;
s3.5, discharging sulfur-containing solids.
By adopting the technical scheme, the desulfurization wastewater is evaporated by using the desulfurization tower, so that the desulfurization wastewater can be evaporated as soon as possible by a spraying mode through the spraying function of the desulfurization tower without additional equipment purchase, the evaporation efficiency is improved, and two purposes are achieved at one stroke; the evaporated moisture can enter the wet desulphurization tower, and under the spraying and cooling effects of the desulphurization tower, the moisture is condensed to enter a slurry circulating system of the desulphurization tower, and the addition of the moisture can also reduce the water demand of the desulphurization system for supplementing the moisture to a certain extent.
The invention in a preferred example may be further configured such that the collecting step further comprises:
s1.1, neutralizing, adding a proper amount of neutralizing agent, and adjusting the pH value of the desulfurization wastewater to be more than 9;
s1.2, settling, adding an organic sulfide, and waiting for the insoluble substance to settle;
s1.3, flocculating, adding a flocculating agent, and filtering flocculated solids;
and S1.4, regulating the pH value, adding acid liquor, and regulating the pH value of the desulfurization wastewater.
By adopting the technical scheme, the PH value of the wastewater is increased to be more than 9.0, so that most heavy metal ions generate insoluble hydroxide precipitate in an alkaline environment; organic sulfide is added, so that residual ionic Cd2+ and Hg2+ in the wastewater can react to form insoluble sulfide for deposition; the flocculation method is adopted to lead the colloid particles and the suspended particles to be coagulated and aggregated and separated from the liquid phase, thus being an effective method for reducing suspended matters; and finally, regulating the pH value, keeping the pH value of the desulfurization wastewater in accordance with the discharge standard, and preparing for subsequent operation to avoid the final liquid discharge not reaching the standard due to the fact that the subsequent operation is carried out under an alkaline condition.
Aiming at the defects in the prior art, the invention also aims to provide a transfer device capable of stably carrying out desulfurization wastewater transportation and solid-liquid separation in the desulfurization wastewater treatment process.
The above object of the present invention is achieved by the following technical solutions:
a transfer device for a desulfurization wastewater treatment process comprises a box body, wherein a feed inlet is formed in the top surface of the box body, a plurality of universal wheels are arranged on the bottom surface of the box body and are respectively positioned at four corners of the bottom surface of the box body, a discharge pipe is fixedly connected to the bottom of one side wall of the box body and is communicated with the inner space of the box body, a drainage pump is arranged on the discharge pipe, and a discharge end cover capable of covering the discharge pipe is slidably connected to the inner side wall; the filter screen that the box inside wall sliding connection has the level to set up, and the cross section of filter screen and the inboard cross section of box are equidimension, and the filter screen can slide on vertical direction.
The present invention in a preferred example may be further configured to: a side wall of the box body is fixedly connected with an air inlet pipe, an air pump is fixedly connected to the air inlet pipe, and an air inlet end cover capable of covering the air inlet pipe is connected to the position, close to the air inlet pipe, of the inner side wall of the box body in a sliding mode.
Through adopting above-mentioned technical scheme, when acquireing desulfurization waste water, in the leading-in box of desulfurization waste water, and cover inlet end cover and ejection of compact end cover guarantee desulfurization waste water can not flow, alright pour into oxygen into the box through short term pipe, make the calcium sulfite oxidation in the desulfurization waste water to calcium sulfate, calcium sulfate is slightly soluble in water, the part that exceeds the saturation can be appeared for the crystal, the filter screen that upwards slides can be with these calcium sulfate crystals and liquid separation, the realization is to the acquireing of calcium sulfate crystal, after acquireing the calcium sulfate crystal, open the outlet end cover, alright utilize the outlet pipe to discharge remaining desulfurization waste water from the box, carry out the evaporation operation.
The present invention in a preferred example may be further configured to: the position department that the box inside wall is close to ejection of compact end cover offers the blown down tank of vertical setting, ejection of compact end cover sliding connection in the blown down tank, and sliding connection has ejection of compact drive block on the one side that ejection of compact end cover is close to the filter screen, and ejection of compact drive block can slide on vertical direction, ejection of compact drive block and filter screen fixed connection.
Through adopting above-mentioned technical scheme, in the lifting filter screen, when the filter screen is through going out the discharging pipe because ejection of compact drive block can slide on the discharge end lid, consequently, the discharge end lid can not be opened, when the filter screen slides to discharging pipe top position, can drive the discharge end lid through ejection of compact drive block and upwards slide and open the discharge that the discharging pipe carries out desulfurization waste water, can effectively ensure through this structure that the filter screen can all accomodate the crystal that appears, and simultaneously, the cultivation goes out desulfurization waste water and can not influence the operation that in time begins to carry out desulfurization waste water discharge when collecting calcium sulfate crystal, can effectively improve desulfurization waste water's transfer efficiency, thereby shorten desulfurization waste water treatment's cycle.
The present invention in a preferred example may be further configured to: the discharging end cover is close to and sets up the ejection of compact driving groove of vertical setting on the face of ejection of compact driving block, ejection of compact driving block sliding connection is in ejection of compact driving groove, ejection of compact driving block bottom surface fixedly connected with ejection of compact spring, the one end fixed connection that ejection of compact driving block was kept away from to ejection of compact spring is in the position department that ejection of compact driving groove is close to the ejection of compact end cover, when ejection of compact spring is in natural state, ejection of compact driving block is located ejection of compact.
Through adopting above-mentioned technical scheme, ejection of compact spring's setting can effectively restrict the position of ejection of compact drive block to reduce ejection of compact end cover because reasons such as the welfare of liquid rock the probability that leads to wearing and tearing from top to bottom when moving along with the filter screen, when the filter screen upwards slided, ejection of compact spring keeps the natural state, ejection of compact drive block can stably be located ejection of compact end cover top, thereby the guarantee just can be lifted up and open the discharging pipe when the filter screen upwards through the ejection of compact end cover after the discharging pipe height.
The present invention in a preferred example may be further configured to: the bottom of the surface of the air inlet end cover close to the filter screen is rotatably connected with an air inlet shaft, the air inlet shaft is horizontally arranged, the air inlet shaft is fixedly connected to the filter screen, the air inlet shaft is fixedly connected with a torsion spring, the other end of the torsion spring is fixedly connected to the air inlet end cover, and when the torsion spring is in a natural state, the air inlet end cover can cover the air inlet pipe.
Through adopting above-mentioned technical scheme, when oxygen is beaten to needs, the air current can promote the air inlet end cover and rotate, thereby it is inside to allow oxygen to get into the box, when need not beat oxygen, the torsional spring can drive air inlet end cover closed intake pipe, when the filter screen that upwards slides is needed, because the discharging pipe can be opened this moment, the intake pipe although also can be opened, but final liquid can be followed the discharging pipe and discharged completely, the intake pipe can not influence ejection of compact process, connect air inlet end cover on the filter screen, can make things convenient for operating personnel to inspect air inlet end cover when lifting up the filter screen.
The present invention in a preferred example may be further configured to: the box top surface sliding connection has scrapes the pole, scrapes the length direction setting of pole along the box, scrapes the width direction that the pole can follow the box and slides, when the filter screen rises, scrapes the pole bottom surface can with filter screen top surface butt.
Through adopting above-mentioned technical scheme, after lifting up the filter screen, the crystal that slidable scraped the pole on with the filter screen is scraped from filter screen one end to, operating personnel can accomplish the collection operation to the precipitate.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the desulfurization wastewater can be properly treated, and components which can be recycled are separated out for storage, so that the subsequent recycling operation is facilitated;
2. the collection and treatment operation of the desulfurization waste water can be efficiently completed by using the existing equipment without additionally purchasing the equipment;
3. can realize the separation of the educt and the desulfurization waste water in time, and is convenient for operators to collect and store the educt.
Drawings
FIG. 1 is an overall schematic view of embodiment 2;
FIG. 2 is a cross-sectional view of a protruded screen structure of example 2;
fig. 3 is an enlarged view of a portion a in fig. 2.
In the figure, 1, a box body; 11. a universal wheel; 12. a discharge pipe; 121. draining pump; 122. a discharge end cover; 123. a discharge chute; 124. a discharge driving groove; 125. a discharging driving block; 126. a discharging spring; 13. an air inlet pipe; 131. an air pump; 132. an air inlet end cover; 133. a torsion spring; 134. an air intake shaft; 14. a scraping rod; 141. a threaded rod; 142. a guide post; 143. a drive motor; 2. and (5) filtering by using a filter screen.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1:
the invention discloses a desulfurization wastewater treatment process which is characterized by comprising the following steps:
and S1, collecting and collecting the desulfurization wastewater. The desulfurization waste water can be stably collected at the water outlet of the desulfurization tower.
S1.1, neutralizing, adding a certain amount of 5% lime milk solution as a neutralizer, and adjusting the pH value of the desulfurization wastewater to be more than 9. The alkaline environment can lead most heavy metal ions to generate insoluble hydroxide precipitate in the alkaline environment. When the pH value is 9.0-9.5, most heavy metal ions form insoluble hydroxide; meanwhile, Ca2+ in the lime milk can also react with part of F-in the wastewater to generate indissolvable CaF2, so that the effect of removing fluorine is achieved.
S1.2, settling, adding organic sulfides such as mercaptan, thiophenol and the like, and waiting for the insoluble substances to settle.
The content of Cd2+ and Hg2+ in the neutralized wastewater still exceeds the standard, so organic sulfide is added into a settling tank to react with residual ionic Cd2+ and Hg2+ to form insoluble sulfide for deposition.
S1.3, flocculating, adding a flocculating agent such as FeClSO4 and the like, adding an anionic coagulant PAM, and filtering flocculated solids.
The content of suspended matters in the desulfurization wastewater is large, and the desulfurization wastewater mainly contains gypsum particles, SiO2, Al and Fe hydroxide. The flocculation method is adopted to lead the colloid particles and the suspended particles to be coagulated and aggregated and separated from the liquid phase, and is an effective method for reducing suspended matters. Therefore, a flocculating agent FeClSO4 is added into the desulfurization waste water, so that fine particles in the waste water are coagulated into large particles and deposited. The anionic coagulant PAM is added to further strengthen the growth process of the particles, so that the fine flocculate slowly becomes a bulky and strong flocculating constituent which is easier to deposit.
And S1.4, regulating the pH value, adding acid liquor such as sulfuric acid and the like, and regulating the pH value of the desulfurization wastewater to 7. The acidity of the desulfurization waste water is kept close to neutrality.
S2, forcing the reaction, and introducing enough oxygen into the desulfurization waste water.
S2.1, collecting the educt of the desulfurization wastewater. Here, the precipitate is calcium sulfate crystals obtained through an oxidation reaction.
S2.2, drying the precipitate. The drying treatment may be air drying or natural drying in the shade.
S2.3, collecting and storing precipitates. The precipitates are usually stored in a dust bank.
And S3, evaporating and separating, and evaporating the desulfurization wastewater to obtain a sulfur-containing solid. The sulfur-containing solids mainly comprise two substances, namely calcium sulfite and calcium sulfate.
S3.1, introducing the desulfurization wastewater into a desulfurization tower. The desulfurization tower is a large-scale device commonly used in desulfurization operation, and is generally used in various desulfurization processes such as wet desulfurization and semi-dry desulfurization.
And S3.2, atomizing the desulfurization wastewater and spraying the desulfurization wastewater into a desulfurization tower. The spray set of desulfurizing tower can realize atomizing desulfurization waste water when spraying.
And 3.3, increasing the temperature in the desulfurizing tower. The effect of accelerating evaporation can be achieved by increasing the temperature.
And S3.4, discharging the evaporation gas. The evaporation gas is mainly water vapor evaporated from the desulfurization waste water. The evaporated moisture can enter the wet desulphurization tower, and under the spraying and cooling effects of the desulphurization tower, the moisture is condensed to enter a slurry circulating system of the desulphurization tower, and the addition of the moisture can also reduce the water demand of the desulphurization system for supplementing the moisture to a certain extent.
S3.5, discharging sulfur-containing solids.
And S4, storing, collecting sulfur-containing solid and storing.
The implementation principle of the embodiment is as follows: after the desulfurization wastewater is obtained, other various heavy metal ions in the desulfurization wastewater are removed firstly, and then sufficient oxygen is introduced into the desulfurization wastewater, because the main sulfur-containing substance in the desulfurization wastewater is calcium sulfite, calcium sulfate can be generated by the reaction of oxygen introduction, and the reaction equation is as follows:
. Because calcium sulfate is slightly soluble in water, after reaching saturation, the excess calcium sulfate can precipitate out of the desulfurization waste water in the form of crystals, and the operator can obtain pure calcium sulfate crystals at this step, which is a good substance as an epoxy resin binder and can be used for food processing and gypsum production, pure calcium sulfate being a good substance for use in food processing and gypsum productionThe calcium sulfate crystal has wide application, the utilization rate of sulfur element can be effectively improved by collecting the calcium sulfate crystal, after precipitates are collected, the residual desulfurization wastewater is introduced into a desulfurization tower to be evaporated by a semi-dry desulfurization process, so that sulfur-containing solid containing components such as calcium sulfate, calcium sulfite and the like can be obtained, moisture can be evaporated into gas to escape, the residual sulfur-containing solid is collected, the environmental pollution can be reduced, the sulfur element can be secondarily utilized, and usually, an ash storehouse is adopted to store the sulfur-containing solid.
Example 2:
referring to fig. 1, on the basis of embodiment 1, the invention discloses a transfer device for a desulfurization wastewater treatment process, which comprises a box body 1, wherein a feed inlet is formed in the top surface of the box body 1, a plurality of universal wheels 11 are arranged on the bottom surface of the box body 1, the universal wheels 11 are respectively positioned at four corners of the bottom surface of the box body 1, a discharge pipe 12 is fixedly connected to the bottom of one side wall of the box body 1, the discharge pipe 12 is communicated with the inner space of the box body 1, a drainage pump 121 is arranged on the discharge pipe 12, and a discharge end cover 122 capable of covering the discharge pipe 12 is. After obtaining desulfurization waste water, with leading-in box 1 of desulfurization waste water, alright beat the oxygen operation to desulfurization waste water in box 1 to open discharge end cover 122 after the full reaction and carry out political operation with leading-in desulfurizing tower of desulfurization waste water from discharging pipe 12.
Referring to fig. 1 and 2, the filter screen 2 that the box 1 inside wall sliding connection has the level to set up, and the cross section of filter screen 2 is equidimension with the cross section of box 1 inboard, and filter screen 2 can slide in vertical direction. Filter screen 2's setting can upwards slide after desulfurization waste water is precipitated the crystallization and gather the deposit crystal at filter screen 2 surface, makes things convenient for operating personnel to collect pure calcium sulfate, when needing to collect, operating personnel upwards slides filter screen 2 alright collect.
Referring to fig. 1 and 2, the discharge chute 123 of vertical setting is seted up to the position department that the box 1 inside wall is close to ejection of compact end cover 122, and ejection of compact end cover 122 sliding connection is in discharge chute 123, and sliding connection has ejection of compact drive block 125 on the one side that ejection of compact end cover 122 is close to filter screen 2, and ejection of compact drive block 125 can slide on vertical direction, ejection of compact drive block 125 and filter screen 2 fixed connection. Discharge end cover 122 is close to the ejection of compact drive block 125 on the face seted up ejection of compact drive groove 124 of vertical setting, ejection of compact drive block 125 sliding connection is in ejection of compact drive groove 124, ejection of compact drive block 125 bottom surface fixedly connected with ejection of compact spring 126, the one end fixed connection that ejection of compact drive block 125 was kept away from to ejection of compact spring 126 is close to ejection of compact drive groove 124's position department in ejection of compact end cover 122, when ejection of compact spring 126 was in natural state, ejection of compact drive block 125 was located ejection of compact drive groove 124 top. When carrying out oxidation reaction, slide filter screen 2 to box 1 bottom, alright let all educt crystals produce at filter screen 2 top surface, thereby use filter screen 2 to collect, this moment, discharge end cover 122 covers discharging pipe 12, can prevent desulfurization waste water outflow discharging pipe 12, when upwards sliding filter screen 2, on the one hand, the cooperation of blown down tank 123 and discharge end cover 122 can realize spacing effect to filter screen 2, on the other hand, filter screen 2 just can drive ejection of compact drive block 125 to slide when starting upwards sliding, when filter screen 2 slides to discharging pipe 12 top, ejection of compact drive block 125 slides to discharge end cover 122 top, just can drive discharge end cover 122 to slide, begin to use discharging pipe 12 drainage, the realization is derived desulfurization waste water and is gone on when collecting the calcium sulfate crystal.
Referring to fig. 1 and 2, an air inlet pipe 13 is fixedly connected to a side wall of the box body 1, and the air inlet pipe 13 is arranged in an L shape. An air pump 131 is fixedly connected to the air inlet pipe 13, and an air inlet end cover 132 capable of covering the air inlet pipe 13 is slidably connected to the position, close to the air inlet pipe 13, of the inner side wall of the box body 1. Air inlet end cover 132 is close to filter screen 2's face bottom and is rotated and be connected with air inlet shaft 134, and air inlet shaft 134 level sets up, and air inlet shaft 134 fixed connection is on filter screen 2, and the last fixedly connected with torsional spring 133 of air inlet shaft 134, torsional spring 133 other end fixed connection are on air inlet end cover 132, and when torsional spring 133 was in natural state, air inlet end cover 132 can cover intake pipe 13. When oxygen needs to be introduced, the filter screen 2 is located at the bottom of the box body 1, at this time, the air inlet pipe 13 is covered by the air inlet end cover 132 in a normal state, water leakage does not occur, and when air enters, the air inlet end cover 132 can be pushed away by air flow to allow the air flow to enter. The air inlet pipe 13 arranged in the L shape can effectively ensure that the process of introducing oxygen cannot be influenced even if the desulfurization wastewater flows backwards.
Referring to fig. 1 and 2, a scraping bar 14 is slidably connected to the top surface of the case 1, the scraping bar 14 is disposed along the longitudinal direction of the case 1, and the bottom surface of the scraping bar 14 can abut against the top surface of the filter screen 2. The top surface of the box body 1 is rotatably connected with a threaded rod 141 arranged along the width direction of the box body 1, the positions of the box body 1 corresponding to the two sides of the threaded rod 141 are fixedly connected with guide posts 142 arranged along the length direction of the threaded rod 141, and the scraping rod 14 is in threaded connection with the threaded rod 141 and is in sliding connection with the guide posts 142. The box body 1 is fixedly connected with a driving motor 143 at a position corresponding to one end of the threaded rod 141, and the threaded rod 141 is fixedly connected to an output shaft of the driving motor 143. When the precipitate crystals need to be collected, the filter screen 2 is slid to the top of the box body 1, the driving motor 143 is started to drive the threaded rod 141 to rotate, and then the scraping rod 14 can be slid to scrape all the precipitates on the top surface of the filter screen 2 from one side of the box body 1, so that the precipitates are collected.
The use mode of the embodiment is as follows: firstly, the filter screen 2 slides to the bottom of the box body 1, and the desulfurization waste water is guided into the box body 1. When the steps of sedimentation, flocculation and the like are carried out, flocculate of the sediment can be removed by lifting the filter screen 2 upwards for a plurality of times, sufficient oxygen is introduced into the box body 1 after the steps are finished, then the filter screen 2 is lifted upwards, the desulfurization wastewater can be led out of the box body 1 through the discharge pipe 12, generated precipitate crystals are collected, and finally, the precipitate can be collected by using the scraping rod 14.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. A desulfurization wastewater treatment process is characterized by comprising the following steps:
s1, collecting and collecting the desulfurization wastewater;
s3, carrying out evaporation separation, and evaporating the desulfurization wastewater to obtain a sulfur-containing solid;
and S4, storing, collecting sulfur-containing solid and storing.
2. The desulfurization wastewater treatment process of claim 1, further comprising, before the step of separating by evaporation:
s2, forced reaction, and sufficient oxygen is introduced into the desulfurization wastewater;
s2.1, collecting educts of the desulfurization wastewater;
s2.2, drying the precipitate;
s2.3, collecting and storing precipitates.
3. The desulfurization wastewater treatment process according to claim 1, wherein the evaporation separation step specifically comprises:
s3.1, introducing the desulfurization wastewater into a desulfurization tower;
s3.2, atomizing the desulfurization wastewater and spraying the desulfurization wastewater into a desulfurization tower;
s3.3, increasing the temperature in the desulfurizing tower;
s3.4, exhausting the evaporation gas;
s3.5, discharging sulfur-containing solids.
4. The desulfurization wastewater treatment process of claim 1, wherein the collecting step further comprises:
s1.1, neutralizing, adding a proper amount of neutralizing agent, and adjusting the pH value of the desulfurization wastewater to be more than 9;
s1.2, settling, adding an organic sulfide, and waiting for the insoluble substance to settle;
s1.3, flocculating, adding a flocculating agent, and filtering flocculated solids;
and S1.4, regulating the pH value, adding acid liquor, and regulating the pH value of the desulfurization wastewater.
5. An intermediate transfer device for the desulfurization waste water treatment process according to any one of claims 1 to 3, characterized in that: the automatic discharging device comprises a box body (1), wherein a feeding hole is formed in the top surface of the box body (1), a plurality of universal wheels (11) are arranged on the bottom surface of the box body (1), the universal wheels (11) are respectively positioned at four corners of the bottom surface of the box body (1), a discharging pipe (12) is fixedly connected to the bottom of one side wall of the box body (1), the discharging pipe (12) is communicated with the inner space of the box body (1), a discharging pump (121) is arranged on the discharging pipe (12), and a discharging end cover (122) capable of covering the discharging pipe (12) is slidably;
the filter screen (2) that box (1) inside wall sliding connection has the level to set up, and the cross section of filter screen (2) is equidimension with the inboard cross section of box (1), and filter screen (2) can slide on vertical direction.
6. The relay device according to claim 4, wherein: a side wall of the box body (1) is fixedly connected with an air inlet pipe (13), the air inlet pipe (13) is fixedly connected with an air pump (131), and the position, close to the air inlet pipe (13), of the inner side wall of the box body (1) is connected with an air inlet end cover (132) capable of covering the air inlet pipe (13) in a sliding mode.
7. The relay device according to claim 4, wherein: the discharging groove (123) of vertical setting is seted up to the position department that box (1) inside wall is close to ejection of compact end cover (122), ejection of compact end cover (122) sliding connection in discharging groove (123), sliding connection has ejection of compact drive block (125) on ejection of compact end cover (122) is close to the one side of filter screen (2), ejection of compact drive block (125) can slide in the vertical direction, ejection of compact drive block (125) and filter screen (2) fixed connection.
8. The relay device according to claim 6, wherein: discharge end cover (122) are close to and offer ejection of compact drive groove (124) of vertical setting on the face of ejection of compact drive block (125), ejection of compact drive block (125) sliding connection is in ejection of compact drive groove (124), ejection of compact drive block (125) bottom surface fixedly connected with ejection of compact spring (126), one end fixed connection that ejection of compact drive block (125) was kept away from in ejection of compact spring (126) is close to the position department in ejection of compact drive groove (124) in ejection of compact end cover (122), when ejection of compact spring (126) is in natural state, ejection of compact drive block (125) are located ejection of compact drive groove (124) top.
9. The relay device according to claim 5, wherein: air inlet end cover (132) are close to the face bottom rotation of filter screen (2) and are connected with air inlet shaft (134), and air inlet shaft (134) level sets up, and air inlet shaft (134) fixed connection is on filter screen (2), fixedly connected with torsional spring (133) on air inlet shaft (134), and torsional spring (133) other end fixed connection is on air inlet end cover (132), and when torsional spring (133) were in natural state, air inlet end cover (132) can cover intake pipe (13).
10. The relay device according to claim 4, wherein: the box (1) top surface sliding connection has scrapes pole (14), scrapes the length direction setting of pole (14) along box (1), scrapes the width direction that pole (14) can follow box (1) and slides, when filter screen (2) goes up, scrapes pole (14) bottom surface and can with filter screen (2) top surface butt.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112604577A (en) * | 2020-12-09 | 2021-04-06 | 江西三和新材料有限公司 | Production facility of regular spherical calcium carbonate is used in new material production |
| CN113350971A (en) * | 2021-06-29 | 2021-09-07 | 宁波久丰热电有限公司 | Desulfurization waste recycling device and process thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB759034A (en) * | 1953-08-27 | 1956-10-10 | Coop Wholesale | Improvements in or relating to apparatus for filtering liquids |
| CN102166470A (en) * | 2011-03-09 | 2011-08-31 | 西安西矿环保科技有限公司 | Dual-alkali smoke desulfurization device and desulfurization method thereof |
| CN105923822A (en) * | 2016-05-31 | 2016-09-07 | 江苏京源环保股份有限公司 | Mud and salt separation zero-discharge process of desulfurization wastewater |
| CN106039975A (en) * | 2016-07-16 | 2016-10-26 | 江苏民生重工有限公司 | Calcium-based wet desulfurization process |
| CN106746030A (en) * | 2017-02-23 | 2017-05-31 | 成都言行果科技有限公司 | A kind of inorganic chemical industry purification tank for liquid waste for improving waste water cleannes |
| WO2018040852A1 (en) * | 2016-08-30 | 2018-03-08 | 成都锐思环保技术股份有限公司 | System and method for treating desulfurization wastewater using flue gas waste heat |
| CN209475775U (en) * | 2019-01-03 | 2019-10-11 | 上海沁竺环境科技有限公司 | Wastewater treatment filtration device |
| CN210367326U (en) * | 2019-04-11 | 2020-04-21 | 江苏博赛环境科技有限公司 | Ecological environment prosthetic devices |
-
2020
- 2020-06-05 CN CN202010508152.8A patent/CN111635056B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB759034A (en) * | 1953-08-27 | 1956-10-10 | Coop Wholesale | Improvements in or relating to apparatus for filtering liquids |
| CN102166470A (en) * | 2011-03-09 | 2011-08-31 | 西安西矿环保科技有限公司 | Dual-alkali smoke desulfurization device and desulfurization method thereof |
| CN105923822A (en) * | 2016-05-31 | 2016-09-07 | 江苏京源环保股份有限公司 | Mud and salt separation zero-discharge process of desulfurization wastewater |
| CN106039975A (en) * | 2016-07-16 | 2016-10-26 | 江苏民生重工有限公司 | Calcium-based wet desulfurization process |
| WO2018040852A1 (en) * | 2016-08-30 | 2018-03-08 | 成都锐思环保技术股份有限公司 | System and method for treating desulfurization wastewater using flue gas waste heat |
| CN106746030A (en) * | 2017-02-23 | 2017-05-31 | 成都言行果科技有限公司 | A kind of inorganic chemical industry purification tank for liquid waste for improving waste water cleannes |
| CN209475775U (en) * | 2019-01-03 | 2019-10-11 | 上海沁竺环境科技有限公司 | Wastewater treatment filtration device |
| CN210367326U (en) * | 2019-04-11 | 2020-04-21 | 江苏博赛环境科技有限公司 | Ecological environment prosthetic devices |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112604577A (en) * | 2020-12-09 | 2021-04-06 | 江西三和新材料有限公司 | Production facility of regular spherical calcium carbonate is used in new material production |
| CN112604577B (en) * | 2020-12-09 | 2022-11-22 | 江西三和新材料有限公司 | Production facility of regular spherical calcium carbonate is used in new material production |
| CN113350971A (en) * | 2021-06-29 | 2021-09-07 | 宁波久丰热电有限公司 | Desulfurization waste recycling device and process thereof |
| CN113350971B (en) * | 2021-06-29 | 2022-11-11 | 宁波久丰热电有限公司 | Desulfurization waste recycling device and process thereof |
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|---|---|
| CN111635056B (en) | 2022-05-17 |
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