CN112811645B - Heavy metal-containing sewage treatment device based on chelation reaction and use method thereof - Google Patents
Heavy metal-containing sewage treatment device based on chelation reaction and use method thereof Download PDFInfo
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- CN112811645B CN112811645B CN202011527226.9A CN202011527226A CN112811645B CN 112811645 B CN112811645 B CN 112811645B CN 202011527226 A CN202011527226 A CN 202011527226A CN 112811645 B CN112811645 B CN 112811645B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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Abstract
The invention discloses a heavy metal-containing sewage treatment device based on chelation reaction and a use method thereof, wherein the heavy metal-containing sewage treatment device comprises a precipitation filter box, a heating blower, a centrifugal dryer and a powder collecting box, wherein the heating blower, the centrifugal dryer and the powder collecting box are all positioned at one side outside the precipitation filter box, the centrifugal dryer is positioned at one side of an output end of the heating blower, and the powder collecting box is positioned at one side of the centrifugal dryer far away from the heating blower; the method comprises the following steps: step one, adjusting the pH of sewage; step two, adding a metal chelating agent in the precipitation chamber and standing for precipitation; step three, the filter plate is further filtered to obtain clear water; step four, discharging sediment and centrifugally drying; step five, collecting heavy metal precipitate powder; the invention solves the problems of complex structural design, low treatment efficiency of heavy metal sewage and high cost of heavy metal sewage treatment in the prior art of the heavy metal sewage treatment device based on the chelation reaction.
Description
Technical Field
The invention belongs to the technical field of sewage treatment equipment, and particularly relates to a sewage treatment device containing heavy metals based on a chelation reaction and a use method thereof.
Background
The heavy metal sewage refers to the heavy metal-containing wastewater discharged in industrial production processes of mining and metallurgy, mechanical manufacturing, chemical industry, electronics, instruments and the like. Heavy metal (such as cadmium, nickel, mercury, zinc, etc.) wastewater is one of the most serious environmental pollution and the most harmful industrial wastewater to human beings. Along with the development of industrialization process, the sewage containing heavy metal ions is more and more produced, and direct discharge not only can pollute the environment such as water source and soil, but also can enter the human body through a food chain, thereby causing serious harm to human health.
The chelation reaction is a chemical reaction that produces a chelate. The ligand capable of forming chelate is called chelating agent, and the heavy metal chelating agent can be used for mixing Cu in waste water under the condition of normal temperature and wide pH value range 2+ 、Cd 2+ 、Hg 2+ 、Pb 2+ 、Mn 2+ 、Ni 2+ 、Zn 2+ 、Cr 3+ Such as various heavy metal ionsThe chemical reaction and the rapid generation of insoluble flocculent precipitate with low water content and easy filtration removal in a short time, thereby achieving the purpose of removing heavy metal ions from sewage.
The structural design of the conventional heavy metal sewage treatment device based on the chelation reaction is complex, the treatment efficiency of heavy metal sewage is low, and the cost of enterprises on heavy metal sewage treatment is increased.
Disclosure of Invention
The invention aims to provide a heavy metal-containing sewage treatment device based on a chelation reaction and a use method thereof, which solve the problems of complex structural design, low treatment efficiency and high treatment cost of heavy metal sewage in the heavy metal sewage treatment device based on the chelation reaction in the prior art.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a contain heavy metal sewage treatment plant based on chelation reaction, includes sedimentation filter tank, heating air-blower, centrifugal dryer and powder collecting box all are located the outside one side of sedimentation filter tank, centrifugal dryer is located the output one side of heating air-blower, powder collecting box is located the one side that centrifugal dryer kept away from heating air-blower;
the sedimentation filter tank comprises a tank body, a first baffle plate, a second baffle plate, a third baffle plate, a water inlet funnel, a water retaining cylinder body, a dropping funnel, a first water collecting bracket, a water collecting tank, a second water collecting bracket, a cleaning pipe, a clean water inlet pipe, a sewage drain, a filter plate bracket, a filter plate and a clean water outlet pipe, wherein the bottom end of the tank body is provided with a bottom plate, the inclined angle of the bottom plate is 5 degrees, the first baffle plate is positioned at one side of the interior of the tank body, the first baffle plate is fixedly connected with the inner wall of the tank body, the second baffle plate is positioned at the other side of the interior of the tank body, the second baffle plate is fixedly connected with the inner wall of the tank body, the third baffle plate is positioned at one side of the second baffle plate far from the first baffle plate, the third baffle plate is fixedly connected with the second baffle plate and the inner wall of the tank body, the first baffle plate, the second filter chamber, the third baffle plate divide the interior of the tank body into a pH adjusting chamber, a sedimentation chamber, a filter chamber and a clean water chamber, the pH adjusting chamber is positioned between the first baffle and the inner wall of the tank body, the settling chamber is positioned between the first baffle and the second baffle, the filtering chamber is positioned on one side of the third baffle, the clear water chamber is positioned on the other side of the third baffle, the water inlet funnel is positioned in the pH adjusting chamber, the bottom end of the water inlet funnel is fixed on the upper surface of the bottom plate, one end of the water inlet is fixedly communicated with the water inlet funnel, the other end of the water inlet penetrates through the side wall of the tank body, the water retaining cylinder is positioned above the water inlet funnel, one side of the water retaining cylinder is fixedly connected with the first baffle, the other side of the water retaining cylinder is fixedly connected with the inner wall of the tank body, the top end of the water inlet funnel is positioned inside the water retaining cylinder, the center of the top end of the water retaining cylinder is provided with a liquid dropping hopper, the bottom end of the liquid dropping hopper penetrates through the top end of the water retaining cylinder, the water collecting tank is positioned above the settling chamber, one end of the water collecting tank is provided with a first water collecting bracket, the first water collecting support is fixedly connected with the first partition board, the second water collecting support is fixedly connected with the second partition board, the second water collecting support and the second partition board are provided with water guide through holes, the water guide through holes are matched with the water collecting tank, the bottom end of the settling chamber is provided with two oppositely arranged drain outlets, one side of the bottom end of the settling chamber, which is far away from the drain outlet, is provided with a cleaning pipe, the two ends of the cleaning pipe are sealed, the bottom end of the cleaning pipe is provided with a plurality of water spraying ports which are uniformly distributed, one end of the clean water inlet pipe is fixedly communicated with one end of the cleaning pipe, the other end of clear water admission pipe runs through the box lateral wall, open at the center of third baffle has the rectangular channel, the both sides of rectangular channel opposition is equipped with the filter plate support, filter plate support and third baffle fixed connection install a plurality of filter between filter plate support and the third baffle, the filter cooperatees with the rectangular channel, and the below of filter is equipped with the clear water exit tube that two opposition set up, the one end of clear water exit tube runs through third baffle and clear water room intercommunication, and the other end of clear water exit tube runs through the box lateral wall.
Further, the centrifugal dryer comprises a base, a first barrel body, an air inlet box, a bearing seat, a driven belt pulley, a driving belt pulley, a belt, a driving motor, a first rotary cover, an auger sleeve, a feed inlet, a conveying auger, a material conveying motor, a second barrel body, a powder outlet, a second rotary cover, an exhaust pipe, a first net barrel, a second net barrel and an end cover, wherein the first barrel body is fixedly arranged above the base, the air inlet box is fixedly arranged on one side of the first barrel body, the inside of the air inlet box is communicated with the inside of the first barrel body, one side of the air inlet box is provided with an air inlet, the air inlet is fixedly communicated with the output end of the heating blower through an air pipe, one side of the base is provided with a second barrel body, the second barrel body is fixedly communicated with the first barrel body, the circumferential side of the second barrel body is provided with a powder outlet, two bearing seats are respectively arranged on two sides of the base, the first rotary cover and the second rotary cover are respectively fixedly connected with the first barrel body and the second barrel body, one side of the first rotary cover is fixedly connected with the first rotary sleeve, the driven belt pulley is fixedly arranged on one side of the driven belt pulley is fixedly connected with the driving belt pulley, the driving belt pulley is fixedly arranged on one side of the first rotary sleeve is fixedly connected with the output end of the first rotary sleeve, the driving belt pulley is fixedly connected with the driving belt pulley, the driving belt pulley is rotatably arranged on the other end is fixedly connected with the output end of the first rotary sleeve, and the rotary sleeve is fixedly connected with the rotary sleeve, the other end of carrying the auger is fixed connection with the output of defeated material motor, and the auger sleeve is close to the one end top of defeated material motor and is equipped with the feed inlet, the feed inlet passes through pipeline and drain intercommunication, and the auger sleeve is kept away from the one end below of defeated material motor and is equipped with the discharge gate, and the center of second rotatory lid is equipped with the exhaust pipe, and the second rotatory lid rotates with the exhaust pipe to be connected, installs between first rotatory lid and the rotatory lid of second and is fixed with first net section of thick bamboo, the inside of first net section of thick bamboo is equipped with second net section of thick bamboo, the both ends of second net section of thick bamboo respectively with first rotatory lid and the rotatory lid fixed connection of second, the second rotatory lid is located the part of first net section of thick bamboo and second between the net section of thick bamboo and opens there are a plurality of evenly distributed's waist shape through-holes, the one end and the inside intercommunication of second net section of thick bamboo of exhaust pipe.
Further, the powder collection box includes collecting box body, chamber door, advances powder mouth, collection sack, goes up frid, lower frid, weighing sensor and dustbin, it has the play case mouth to open collecting box body one side, the chamber door is installed to the cooperation on the play case mouth, collecting box body is kept away from one side of chamber door and is equipped with into the powder mouth, advance powder mouth one end and the inside intercommunication of collecting box body, advance powder mouth other end and go out powder mouth intercommunication, collecting box body inside top is equipped with the frid, go up frid and collecting box body inner wall fixed connection, go up the frid and be located into powder mouth below, go up the frid and advance to be equipped with between the powder mouth and collect the sack, the one end of collection sack is with advancing powder mouth fixed intercommunication, the other end of collection sack runs through last frid, and the below of going up the frid is equipped with down the frid, be equipped with the dustbin down between frid and the frid down, the dustbin is installed weighing sensor with the below center of frid respectively.
Further, an air outlet is arranged in the center of the top end of the box body, and the air outlet is communicated with the inside of the sedimentation chamber; two oppositely arranged observation windows are arranged on one side, far away from the sewage outlet, of the box body, and the two observation windows are respectively communicated with the pH adjusting chamber and the precipitating chamber.
Further, open at first baffle center has the access hole, install the access cover on the access hole, the below of access cover is equipped with a row of a plurality of evenly distributed's rectangular hole, rectangular hole intercommunication pH adjustment chamber and settling chamber.
The application method of the heavy metal-containing sewage treatment device based on the chelation reaction specifically comprises the following steps:
firstly, injecting sewage into a pH adjusting chamber of a box body through a water inlet funnel and a water retaining cylinder, adding an alkaline agent into a dropping funnel, dropping the alkaline agent into the sewage of the water inlet funnel from the bottom end of the dropping funnel, adjusting the pH value of the sewage to 6.5-8.5, and allowing the sewage with the pH adjusted to enter a precipitating chamber from a rectangular hole on a first baffle plate;
step two, sewage after pH adjustment flows into a precipitation chamber from a pH adjustment chamber, the water level in the precipitation chamber rises, a heavy metal chelating agent is added into the precipitation chamber, the heavy metal chelating agent and heavy metal ions in the sewage undergo a chelating reaction to form a chelating salt precipitate, the chelating salt precipitate stands in the precipitation chamber for precipitation, the liquid level of the sewage after precipitation treatment rises above a water collecting tank, the sewage flows into the water collecting tank, and flows into a filtering chamber through a diversion hole on a second partition plate;
step three, filtering the sewage flowing into the filtering chamber through a filtering plate, filtering and removing residual chelating salt precipitate in the sewage to obtain clear water, wherein the clear water flows into a clear water chamber through a rectangular groove on a third partition plate, and the clear water in the clear water chamber flows out of a precipitation filtering box through a clear water outlet pipe;
when the accumulation height of the chelating salt precipitate in the precipitation chamber exceeds the height of the drain outlet, opening the drain outlet, enabling the chelating salt precipitate precipitated at the bottom end of the bottom plate to enter the auger sleeve through the pipeline and the feed inlet, starting the feed conveying motor, conveying the chelating salt precipitate into the second net barrel, opening the driving motor at the moment, driving the driving belt pulley to rotate at the output end of the driving motor, driving the driven belt pulley to rotate through the belt, driving the driven belt pulley to rotate, driving the first rotary cover to rotate through the belt pulley, driving the second rotary cover to rotate through the first net barrel and the second net barrel, simultaneously starting the heating blower, enabling the output end of the heating blower to enable hot air to enter the first barrel through the air inlet of the air inlet box, enabling the chelating salt precipitate to roll and dry in the second net barrel to form tiny heavy metal precipitate powder, enabling the chelating salt precipitate to flow out of the pores of the second net barrel and the first net barrel, enabling the chelating salt precipitate to flow into the second barrel, and enabling the second barrel to be blown by the hot air to be centrifugally ejected from the powder outlet under the driving of the hot air;
and fifthly, heavy metal precipitate powder enters the dustbin to be collected through the powder inlet and the collection cloth bag, when the weighing sensor weighs heavy metal precipitate in the dustbin to be fully collected, the powder inlet is closed, the box door is opened, the dustbin in the collecting box body is taken out, the powder inlet is opened again after a new dustbin is replaced, and then the box door is closed.
The invention has the beneficial effects that:
according to the invention, the interior of the box body is divided into four parts, namely the pH adjusting chamber, the sedimentation chamber, the filter chamber and the clean water chamber by arranging the first baffle, the second baffle and the third baffle, and the water inlet funnel and the water retaining cylinder body are arranged in the pH adjusting chamber, so that the pH adjustment can be completed when sewage enters the box body, and the sewage treatment efficiency is improved; the water collecting tank is arranged in the precipitation chamber, so that the chelating salt precipitate can be precipitated in dynamic water flow, and the rectangular holes which are uniformly distributed are formed below the first partition plate, so that the sewage flows from the pH adjusting chamber to the precipitation chamber more stably, and the impact on the precipitation process is reduced; by arranging a plurality of filter plates in the filter chamber, the sewage flowing into the filter chamber can be filtered again, so that the obtained cleaner clean water is ensured, and the clean water can be reused after treatment;
according to the invention, the heating blower, the centrifugal dryer and the powder collecting box are arranged, so that the chelate salt precipitate precipitated in the precipitating chamber can be dried and refined, and is conveyed into the powder collecting box for collection, and further treatment of the solid precipitate is facilitated;
the invention has simple structure, ensures that the sewage is treated on heavy metal sewage in the flowing process, and has high sewage treatment efficiency and lower treatment cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a heavy metal-containing sewage treatment device based on chelation reaction;
FIG. 2 is a schematic view of the internal structure of the sedimentation filter box of the present invention;
FIG. 3 is a side view of the sediment filter tank of the present invention;
FIG. 4 is a top view of the sediment filter tank of the present invention;
FIG. 5 is a front view of the centrifugal dryer of the present invention;
FIG. 6 is a top view of the centrifugal dryer of the present invention;
FIG. 7 is a schematic view showing an internal structure of the centrifugal dryer of the present invention;
fig. 8 is a schematic view showing the internal structure of the powder collecting bin of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. a precipitation filtration box; 101. a case; 1011. a bottom plate; 102. a first separator; 103. a second separator; 104. a third separator; 105. a water inlet; 106. a water inlet funnel; 107. a water blocking cylinder; 108. a dropping funnel; 109. an air outlet; 110. a first water collection stand; 111. a water collection tank; 112. a second water collection stand; 113. cleaning the tube; 114. feeding clear water into the pipe; 115. a sewage outlet; 116. an observation window; 117. a filter plate holder; 118. a filter plate; 119. clear water outlet pipe; 120. an access cover; 2. heating the blower; 3. a centrifugal dryer; 301. a base; 302. a first tub; 303. an air inlet box; 304. an air inlet; 305. a bearing seat; 306. a driven pulley; 307. a driving pulley; 308. a belt; 309. a driving motor; 310. a first rotary cover; 311. a hank Long Taoguan; 312. a feed inlet; 313. conveying the auger; 314. a material conveying motor; 315. a second tub; 316. a powder outlet; 317. a second rotary cover; 318. an exhaust pipe; 319. a first net drum; 320. a second net drum; 321. an end cap; 4. a powder collection box; 401. a collection box body; 402. a door; 403. a powder inlet; 404. collecting a cloth bag; 405. an upper groove plate; 406. a lower trough plate; 407. a weighing sensor; 408. a dustbin.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-8, the invention discloses a heavy metal-containing sewage treatment device based on chelation reaction, which comprises a precipitation filtering box 1, a heating blower 2, a centrifugal dryer 3 and a powder collecting box 4, wherein the heating blower 2, the centrifugal dryer 3 and the powder collecting box 4 are all positioned at one side outside the precipitation filtering box 1, the centrifugal dryer 3 is positioned at one side of an output end of the heating blower 2, and the powder collecting box 4 is positioned at one side of the centrifugal dryer 3 far away from the heating blower 2;
the sedimentation filter box 1 comprises a box body 101, a first baffle 102, a second baffle 103, a third baffle 104, a water inlet 105, a water inlet funnel 106, a water retaining cylinder 107, a dropping funnel 108, a first water collecting bracket 110, a water collecting tank 111, a second water collecting bracket 112, a cleaning pipe 113, a clean water inlet pipe 114, a sewage drain 115, a filter plate bracket 117, a filter plate 118 and a clean water outlet pipe 119, a bottom plate 1011 is arranged at the bottom end of the box body 101, the inclination angle of the bottom plate 1011 is 5 degrees, the first baffle 102 is positioned at one side inside the box body 101, the first baffle 102 is fixedly connected with the inner wall of the box body 101, the second baffle 103 is positioned at the other side inside the box body 101, the second baffle 103 is fixedly connected with the inner wall of the box body 101, the third baffle 104 is positioned at one side of the second baffle 103 far from the first baffle 102, the third baffle 104 is respectively fixedly connected with the second baffle 103 and the inner wall of the box body 101, the first baffle 102, the second baffle 103 and the third baffle 104 divide the interior of the box body 101 into a pH adjusting chamber, a settling chamber, a filtering chamber and a clear water chamber respectively, the pH adjusting chamber is positioned between the first baffle 102 and the inner wall of the box body 101, the settling chamber is positioned between the first baffle 102 and the second baffle 103, the filtering chamber is positioned at one side of the third baffle 104, the clear water chamber is positioned at the other side of the third baffle 104, the water inlet funnel 106 is positioned in the pH adjusting chamber, the bottom end of the water inlet funnel 106 is fixed on the upper surface of the bottom plate 1011, one end of the water inlet 105 is fixedly communicated with the water inlet funnel 106, the other end of the water inlet 105 penetrates through the side wall of the box body 101, the water retaining cylinder 107 is positioned above the water inlet funnel 106, one side of the water retaining cylinder 107 is fixedly connected with the first baffle 102, the other side of the water retaining cylinder 107 is fixedly connected with the inner wall of the box body 101, the top end of the water inlet funnel 106 is positioned inside the water retaining cylinder 107, the center of the top end of the water retaining cylinder 107 is provided with a drip chamber 108, the bottom end of the drip chamber 108 penetrates through the top end of the water retaining cylinder 107, the water collecting tank 111 is positioned above the inside of the settling chamber, one end of the water collecting tank 111 is provided with a first water collecting support 110, the first water collecting support 110 is fixedly connected with the first partition board 102, the other end of the water collecting tank 111 is provided with a second water collecting support 112, the second water collecting support 112 is fixedly connected with the second partition board 103, the second water collecting support 112 and the second partition board 103 are provided with water guide through holes, the water guide through holes are matched with the water collecting tank 111, the bottom end of the settling chamber is provided with two oppositely arranged drain outlets 115, one side of the bottom end of the settling chamber, which is far away from the drain outlet 115, is provided with a cleaning pipe 113, two ends of the cleaning pipe 113 are sealed, the bottom of wash pipe 113 is opened there is a plurality of evenly distributed's water jet, the one end that the clear water advanced pipe 114 and the one end of wash pipe 113 are fixed to be linked together, the other end that the clear water advanced pipe 114 runs through box 101 lateral wall, the center of third baffle 104 is opened there is the rectangular channel, the both sides in rectangular channel opposition is equipped with filter plate support 117, filter plate support 117 and third baffle 104 fixed connection, installs a plurality of filter 118 between filter plate support 117 and the third baffle 104, filter 118 cooperatees with the rectangular channel, and the below of filter 118 is equipped with the clear water exit tube 119 of two opposition settings, the one end of clear water exit tube 119 runs through third baffle 104 and clear water room intercommunication, and the other end of clear water exit tube 119 runs through box 101 lateral wall.
The centrifugal dryer 3 comprises a base 301, a first barrel body 302, an air inlet box 303, a bearing seat 305, a driven belt pulley 306, a driving belt pulley 307, a belt 308, a driving motor 309, a first rotary cover 310, an auger sleeve 311, a feeding port 312, a conveying auger 313, a conveying motor 314, a second barrel body 315, a powder outlet 316, a second rotary cover 317, an exhaust pipe 318, a first net barrel 319, a second net barrel 320 and an end cover 321, wherein the first barrel body 302 is fixedly arranged above the base 301, one side of the first barrel body 302 is fixedly provided with the air inlet box 303, the inside of the air inlet box 303 is communicated with the inside of the first barrel body 302, one side of the air inlet box 303 is provided with an air inlet 304, the air inlet 304 is fixedly communicated with the output end of the heating blower 2 through an air pipe, one side of the base 301 is provided with a second barrel body 315, the second barrel body 315 is fixedly communicated with the first barrel body 302, the upper part of the periphery of the second barrel body 315 is provided with the powder outlet 316, bearing seats 305 are arranged on two sides of the base 301, the two bearing seats 305 are fixedly connected with a first barrel body 302 and a second barrel body 315 respectively, a first rotary cover 310 and a second rotary cover 317 are respectively positioned inside the first barrel body 302 and the second barrel body 315, one end of the first rotary cover 310 penetrates through the first barrel body 302 and the bearing seats 305 to be fixedly provided with a driven pulley 306, the first rotary cover 310 is rotationally connected with the bearing seats 305, one end of the second rotary cover 317 penetrates through the second barrel body 315 and the bearing seats 305, the second rotary cover 317 is rotationally connected with the bearing seats 305, one side below the driven pulley 306 is provided with a driving motor 309, the output end of the driving motor 309 is fixedly provided with a driving pulley 307, a belt 308 is arranged between the driving pulley 307 and the driven pulley 306, the center of the first rotary cover 310 is provided with a packing sleeve 311, the first rotary cover 310 is rotationally connected with the packing sleeve 311, an end cover 321 is fixedly arranged at one end of the auger sleeve 311, a material conveying motor 314 is fixedly arranged at the other end of the auger sleeve 311, a conveying auger 313 is arranged in the auger sleeve 311, one end of the conveying auger 313 is rotationally connected with the end cover 321, the other end of the conveying auger 313 is fixedly connected with the output end of the material conveying motor 314, a feeding port 312 is arranged above one end, close to the material conveying motor 314, of the auger sleeve 311, the feeding port 312 is communicated with the sewage outlet 115 through a pipeline, a discharging port is arranged below one end, far away from the material conveying motor 314, of the auger sleeve 311, an exhaust pipe 318 is arranged at the center of the second rotary cover 317, the second rotary cover 317 is rotationally connected with the exhaust pipe 318, a first net drum 319 is fixedly arranged between the first rotary cover 310 and the second rotary cover 317, a second net drum 320 is arranged in the second rotary cover 317, two ends of the second net drum 320 are fixedly connected with the first rotary cover 310 and the second rotary cover 317 respectively, a plurality of uniformly distributed waist-shaped through holes 318 are formed in the portion, which is located between the first net drum 319 and the second net drum 320, and the second net drum 320 are communicated with the inner part of the exhaust pipe 320.
The powder collecting box 4 comprises a collecting box body 401, a box door 402, a powder inlet 403, a collecting cloth bag 404, an upper groove plate 405, a lower groove plate 406, a weighing sensor 407 and a dustbin 408, wherein one side of the collecting box body 401 is provided with the box outlet, the box door 402 is mounted on the box outlet in a matched mode, one side, far away from the box door 402, of the collecting box body 401 is provided with the powder inlet 403, one end of the powder inlet 403 is communicated with the inside of the collecting box body 401, the other end of the powder inlet 403 is communicated with the powder outlet 316, an upper groove plate 405 is arranged above the inside of the collecting box body 401, the upper groove plate 405 is fixedly connected with the inner wall of the collecting box body 401, the upper groove plate 405 is located below the powder inlet 403, a collecting cloth bag 404 is arranged between the upper groove plate 405 and the powder inlet 403, one end of the collecting cloth bag 404 is fixedly communicated with the powder inlet 403, the other end of the collecting cloth bag 404 penetrates through the upper groove plate 405, the lower groove plate 406 is arranged below the collecting box body 401, the lower groove plate 406 is in sliding connection with the inner wall of the collecting box body 401, the upper groove plate 405 and the lower groove plate 408 are respectively provided with the garbage sensor 408, the upper groove plate 408 is arranged below the garbage sensor 408, and the lower groove plate 408 is respectively connected with the garbage sensor 408.
An air outlet 109 is formed in the center of the top end of the box body 101, and the air outlet 109 is communicated with the inside of the sedimentation chamber; two oppositely arranged observation windows 116 are arranged on one side of the box body 101 away from the sewage outlet 115, and the two observation windows 116 are respectively communicated with the pH adjusting chamber and the sedimentation chamber.
The center of the first partition board 102 is provided with an access hole, the access hole is provided with an access cover 120, a row of rectangular holes which are uniformly distributed are arranged below the access cover 120, and the rectangular holes are communicated with the pH adjusting chamber and the settling chamber.
The application method of the heavy metal-containing sewage treatment device based on the chelation reaction specifically comprises the following steps:
firstly, injecting sewage into a pH adjusting chamber of the box body 101 through a water inlet 105, a water inlet funnel 106 and a water retaining cylinder 107, simultaneously adding an alkaline agent into a dropping funnel 108, dropping the alkaline agent into the sewage of the water inlet funnel 106 from the bottom end of the dropping funnel 108, adjusting the pH value of the sewage to 6.5-8.5, and allowing the sewage with the pH adjusted to enter a precipitating chamber from rectangular holes on a first baffle plate 102;
step two, sewage after pH adjustment flows into a precipitation chamber from a pH adjustment chamber, the water level in the precipitation chamber is increased, a heavy metal chelating agent is added into the precipitation chamber, the heavy metal chelating agent and heavy metal ions in the sewage undergo a chelating reaction to form a chelating salt precipitate, the chelating salt precipitate stands in the precipitation chamber for precipitation, the liquid level of the sewage after precipitation treatment is increased to be above a water collecting tank 111, the sewage flows into the water collecting tank 111, and flows into a filtering chamber through a diversion hole on a second partition plate 103;
step three, filtering the sewage flowing into the filtering chamber through a filtering plate 118 to remove residual chelating salt precipitate in the sewage, thereby obtaining clean water, wherein the clean water flows into a clean water chamber through a rectangular groove on a third partition plate 104, and the clean water in the clean water chamber flows out of the precipitation filtering box 1 through a clean water outlet pipe 119;
step four, when the accumulation height of the chelating salt precipitate in the precipitation chamber exceeds the height of the drain outlet 115, the drain outlet 115 is opened, the chelating salt precipitate precipitated at the bottom end of the bottom plate 1011 enters the inside of the auger sleeve 311 through a pipeline and a feed inlet 312, a material conveying motor 314 is started, the chelating salt precipitate is conveyed into the inside of the second net drum 320, at the moment, a driving motor 309 is opened, the output end of the driving motor 309 drives a driving belt pulley 307 to rotate, the driving belt pulley 307 drives a driven belt pulley 306 to rotate through a belt 308, the driven belt pulley 306 drives a first rotary cover 310 to rotate, the first rotary cover 310 drives a second rotary cover 317 to rotate through a first net drum 319 and a second net drum 320, a heating blower 2 is started, the output end of the heating blower 2 drives hot air to enter the inside of the first barrel 302 through an air inlet 304 of the air inlet 303, the chelating salt precipitate is turned over and dried into fine heavy metal precipitate powder in the second net drum 320, the fine heavy metal precipitate powder flows out of the pores of the second net drum 320 and the first net drum 319, and is blown into the second barrel 315 under the centrifugal driving of the hot air outlet 316;
step five, heavy metal precipitate powder enters the dustbin 408 through the powder inlet 403 and the collecting cloth bag 404, when the weighing sensor 407 weighs heavy metal precipitate in the dustbin 408 to be fully collected, the powder inlet 403 is closed, the dustbin 408 in the collecting box body 401 is taken out, the powder inlet 403 is opened again after a new dustbin 408 is replaced, and then the dustbin 402 is closed.
The working principle of the invention is as follows:
when the heavy metal sewage treatment device based on the chelation reaction is used, sewage is firstly injected into a pH adjusting chamber of the box body 101 from the water inlet 105 through the water inlet funnel 106 and the water retaining cylinder 107, meanwhile, alkaline agent is added into the dropping funnel 108, the alkaline agent is dropped into the sewage of the water inlet funnel 106 from the bottom end of the dropping funnel 108, the pH value of the sewage is adjusted to 6.5-8.5, pH value measurement and alkaline agent addition amount control can be carried out by adopting a pH meter, and the sewage with the pH value adjusted enters a precipitating chamber from rectangular holes on the first baffle plate 102;
the sewage after pH adjustment continuously flows into a precipitation chamber from a pH adjustment chamber, the water level in the precipitation chamber is increased, a heavy metal chelating agent is added into the precipitation chamber before the water level in the precipitation chamber is lower than a water collecting tank 111, the heavy metal chelating agent is xanthate chelating agent or dithiocarbamate chelating agent, the heavy metal chelating agent and heavy metal ions in the sewage undergo a chelating reaction to form a chelating salt precipitate, the chelating salt precipitate stands and precipitates in the precipitation chamber, the sewage liquid level after precipitation treatment is increased to be higher than the water collecting tank 111, the sewage flows into the water collecting tank 111, and flows into a filtering chamber through a diversion hole on a second baffle 103;
the sewage flowing into the filtering chamber is filtered by the plurality of filtering plates 118, the residual chelating salt precipitate in the sewage is filtered and removed, clear water is obtained, the clear water flows into the clear water chamber through the rectangular groove on the third partition plate 104, the clear water in the clear water chamber flows out of the precipitation filtering box 1 through the clear water outlet pipe 119, and the treated clear water can be used for industrial production again;
when the accumulation height of the chelating salt precipitate in the precipitation chamber exceeds the height of the drain outlet 115, the drain outlet 115 is opened, the chelating salt precipitate precipitated at the bottom end of the bottom plate 1011 enters the inside of the auger sleeve 311 through a pipeline and the feed inlet 312, the feed motor 314 is started, the output end of the feed motor 314 drives the feed auger 313 to rotate, the feed auger 313 conveys the chelating salt precipitate into the inside of the second net drum 320, at the moment, the drive motor 309 is opened, the output end of the drive motor 309 drives the drive belt pulley 307 to rotate, the drive belt pulley 307 drives the driven belt pulley 306 to rotate through the belt 308, the driven belt pulley 306 drives the first rotary cover 310 to rotate, the first rotary cover 310 drives the second rotary cover 317 through the first net drum 319 and the second net drum 320, meanwhile, the heating blower 2 is started, the output end of the heating blower 2 turns over and dries the chelating salt precipitate into fine heavy metal precipitate powder in the second net drum 320, flows out of the pores of the second net drum 320 and the first net drum 319, the second net drum 318 is blown out of the second net drum 315, and the drying water is discharged outside of the drying pipe 3 through the second net drum 315;
heavy metal precipitate powder enters the dustbin 408 through the powder inlet 403 and the collecting cloth bag 404, when the weighing sensor 407 weighs heavy metal precipitate in the dustbin 408 to be fully collected, the powder inlet 403 is closed, the box door 402 is opened, the dustbin 408 in the collecting box body 401 is taken out, the powder inlet 403 is opened again after a new dustbin 408 is replaced, and then the box door 402 is closed.
The foregoing is merely illustrative and explanatory of the principles of the invention, as various modifications and additions may be made to the specific embodiments described, or similar thereto, by those skilled in the art, without departing from the principles of the invention or beyond the scope of the appended claims.
Claims (2)
1. The utility model provides a contain heavy metal sewage treatment plant based on chelation reaction which characterized in that: the centrifugal dryer comprises a sedimentation filter box (1), a heating blower (2), a centrifugal dryer (3) and a powder collecting box (4), wherein the heating blower (2), the centrifugal dryer (3) and the powder collecting box (4) are all positioned on one side of the outside of the sedimentation filter box (1), the centrifugal dryer (3) is positioned on one side of the output end of the heating blower (2), and the powder collecting box (4) is positioned on one side of the centrifugal dryer (3) far away from the heating blower (2);
the sedimentation filter box (1) comprises a box body (101), a first baffle plate (102), a second baffle plate (103), a third baffle plate (104), a water inlet (105), a water inlet funnel (106), a water retaining cylinder body (107), a dropping liquid bucket (108), a first water collecting support (110), a water collecting tank (111), a second water collecting support (112), a cleaning pipe (113), a clean water inlet pipe (114), a sewage outlet (115), a filter plate support (117), a filter plate (118) and a clean water outlet pipe (119), a bottom plate (1011) is arranged at the bottom end of the box body (101), the inclined angle of the bottom plate (1011) is 5 degrees, the first baffle plate (102) is positioned at one side inside the box body (101), the first baffle plate (102) is fixedly connected with the inner wall of the box body (101), the second baffle plate (103) is positioned at the other side inside the box body (101), the second baffle plate (103) is fixedly connected with the inner wall of the box body (101), the third baffle plate (104) is positioned at one side of the second baffle plate (103) far away from the first baffle plate (102), the third baffle plate (103) is respectively separated from the second baffle plate (104) and the second baffle plate (101), the first baffle plate (104) is fixedly connected with the inner wall of the first baffle plate (101), and the second baffle plate (102) is respectively separated from the first baffle plate (102) and the second baffle plate is respectively The pH adjusting chamber is positioned between the first partition plate (102) and the inner wall of the box body (101), the precipitating chamber is positioned between the first partition plate (102) and the second partition plate (103), the filtering chamber is positioned on one side of the third partition plate (104), the clear water chamber is positioned on the other side of the third partition plate (104), the water inlet funnel (106) is positioned in the pH adjusting chamber, the bottom end of the water inlet funnel (106) is fixed on the upper surface of the bottom plate (1011), one end of the water inlet (105) is fixedly communicated with the water inlet funnel (106), the other end of the water inlet (105) penetrates through the side wall of the box body (101), the water retaining cylinder (107) is positioned above the water inlet funnel (106), one side of the water retaining cylinder (107) is fixedly connected with the first partition plate (102), the other side of the water retaining cylinder (107) is fixedly connected with the inner wall of the box body (101), the top end of the water retaining cylinder (107) is centrally provided with a dropping liquid hopper (108), the bottom end of the dropping funnel (108) penetrates through the bottom end of the bottom plate (1011) and penetrates through the inner side of the first partition plate (110), the water retaining cylinder (110) is fixedly connected with the first partition plate (110), the other end of the water collecting tank (111) is provided with a second water collecting bracket (112), the second water collecting bracket (112) is fixedly connected with a second partition board (103), a water guide through hole is formed in the second water collecting bracket (112) and the second partition board (103), the water guide through hole is matched with the water collecting tank (111), the bottom end of the settling chamber is provided with two opposite sewage outlets (115), one side of the bottom end of the settling chamber, far away from the sewage outlets (115), is provided with a cleaning pipe (113), two ends of the cleaning pipe (113) are sealed, the bottom end of the cleaning pipe (113) is provided with a plurality of evenly distributed water spray openings, one end of the clean water inlet pipe (114) is fixedly communicated with one end of the cleaning pipe (113), the other end of the clean water inlet pipe (114) penetrates through the side wall of the tank body (101), the center of the third partition board (104) is provided with a rectangular groove, two opposite sides of the rectangular groove are provided with filter plate brackets (117), the filter plate brackets (117) are fixedly connected with the third partition board (104), a filter plate (118) is arranged between the bracket (117) and the third partition board (104), two opposite sides of the filter plate brackets (118) are provided with a plurality of opposite filter plates (118), one end of the rectangular partition board (118) is fixedly communicated with the lower clear water outlet pipe (118), the other end of the clear water outlet pipe (119) penetrates through the side wall of the box body (101);
an air outlet (109) is formed in the center of the top end of the box body (101), and the air outlet (109) is communicated with the inside of the sedimentation chamber; two oppositely arranged observation windows (116) are arranged on one side, far away from the sewage outlet (115), of the box body (101), and the two observation windows (116) are respectively communicated with the pH adjusting chamber and the sedimentation chamber;
an access hole is formed in the center of the first partition plate (102), an access cover (120) is installed on the access hole, a row of rectangular holes which are uniformly distributed are formed below the access cover (120), and the rectangular holes are communicated with the pH adjusting chamber and the sedimentation chamber;
the centrifugal dryer (3) comprises a base (301), a first barrel body (302), an air inlet box (303), a bearing seat (305), a driven belt wheel (306), a driving belt wheel (307), a belt (308), a driving motor (309), a first rotary cover (310), a packing auger sleeve (311), a feeding port (312), a conveying packing auger (313), a conveying motor (314), a second barrel body (315), a powder outlet (316), a second rotary cover (317), an exhaust pipe (318), a first net barrel (319), a second net barrel (320) and an end cover (321), wherein the first barrel body (302) is fixedly arranged above the base (301), one side of the first barrel body (302) is fixedly provided with an air inlet box (303), the inside of the air inlet box (303) is communicated with the inside of the first barrel body (302), one side of the air inlet box (303) is fixedly communicated with the output end of the heating blower (2) through an air pipe, one side of the base (301) is provided with a second barrel body (315), one side of the second barrel body (315) is fixedly communicated with the bearing seat (315) on the two sides of the first barrel body (302), two bearing frames (305) are fixedly connected with a first barrel body (302) and a second barrel body (315) respectively, a first rotary cover (310) and a second rotary cover (317) are positioned inside the first barrel body (302) and the second barrel body (315) respectively, one end of the first rotary cover (310) penetrates through the first barrel body (302) and the bearing frames (305) to be installed and fixed with a driven pulley (306), the first rotary cover (310) is rotationally connected with the bearing frames (305), one end of the second rotary cover (317) penetrates through the second barrel body (315) and the bearing frames (305), the second rotary cover (317) is rotationally connected with the bearing frames (305), a driving motor (309) is arranged on one side below the driven pulley (306), a driving pulley (307) is installed and fixed at the output end of the driving motor (309), a belt (308) is installed between the driving pulley (307) and the driven pulley (306), a packing auger sleeve (311) is arranged at the center of the first rotary cover (310), the first rotary cover (310) is rotationally connected with the second barrel body (315) and the bearing frames (305), a packing auger (311) is fixedly installed at the other end (37) of the packing auger (37) and the packing auger (37) is fixedly installed at the other end (313), one end of the conveying auger (313) is rotationally connected with the end cover (321), the other end of the conveying auger (313) is fixedly connected with the output end of the conveying motor (314), a feed inlet (312) is formed above one end, close to the conveying motor (314), of the auger Long Taoguan (311), the feed inlet (312) is communicated with the sewage outlet (115) through a pipeline, a discharge outlet is formed below one end, far away from the conveying motor (314), of the auger Long Taoguan (311), an exhaust pipe (318) is arranged at the center of the second rotary cover (317), the second rotary cover (317) is rotationally connected with the exhaust pipe (318), a first net drum (319) is fixedly arranged between the first rotary cover (310) and the second rotary cover (317), a second net drum (320) is arranged inside the first net drum (319), two ends of the second net drum (320) are fixedly connected with the first rotary cover (310) and the second rotary cover (317), a plurality of uniformly distributed through holes are formed in the second net drum (320), and the second rotary cover (317) is positioned between the first net drum (319) and the second net drum (320), and the second net drum (320) is uniformly distributed in the inside of the drum;
the powder collecting box (4) comprises a collecting box body (401), a box door (402), a powder inlet (403), a collecting cloth bag (404), an upper groove plate (405), a lower groove plate (406), a weighing sensor (407) and a dustbin (408), wherein one side of the collecting box body (401) is provided with a box outlet, the box door (402) is matched and installed on the box outlet, one side of the collecting box body (401) far away from the box door (402) is provided with the powder inlet (403), one end of the powder inlet (403) is communicated with the inside of the collecting box body (401), the other end of the powder inlet (403) is communicated with the powder outlet (316), the upper groove plate (405) is arranged above the inside of the collecting box body (401), the upper groove plate (405) is fixedly connected with the inner wall of the collecting box body (401), the upper groove plate (405) is arranged below the powder inlet (403), the collecting cloth bag (404) is arranged between the upper groove plate (405) and the powder inlet (403), one end of the collecting cloth bag (404) is communicated with the powder inlet (403), the other end of the collecting cloth bag (403) is fixedly connected with the inner wall of the collecting box (406), the upper groove plate (405) is arranged between the upper groove plate (405) and the lower groove plate (406), the dustbin (408) is respectively connected with the upper groove plate (405) and the lower groove plate (406) in a sliding mode, and a weighing sensor (407) is arranged in the center below the lower groove plate (406).
2. The method for using the heavy metal-containing sewage treatment device based on the chelation reaction according to claim 1, wherein the method comprises the following steps: the method specifically comprises the following steps:
firstly, injecting sewage into a pH adjusting chamber of a box body (101) through a water inlet (105) through a water inlet funnel (106) and a water retaining cylinder (107), adding an alkaline agent into a dropping funnel (108), dripping the alkaline agent into the sewage of the water inlet funnel (106) from the bottom end of the dropping funnel (108), adjusting the pH value of the sewage to 6.5-8.5, and allowing the sewage with the pH adjusted to enter a precipitating chamber from rectangular holes on a first baffle plate (102);
step two, sewage after pH adjustment flows into a precipitation chamber from a pH adjustment chamber, the water level in the precipitation chamber is increased, a heavy metal chelating agent is added into the precipitation chamber, the heavy metal chelating agent and heavy metal ions in the sewage undergo a chelating reaction to form a chelating salt precipitate, the chelating salt precipitate stands in the precipitation chamber for precipitation, the liquid level of the sewage after precipitation treatment is increased to be above a water collecting tank (111), the sewage flows into the water collecting tank (111), and flows into a filtering chamber through a flow guide hole on a second partition plate (103);
filtering the sewage flowing into the filtering chamber through a filtering plate (118), filtering and removing residual chelating salt precipitate in the sewage to obtain clear water, wherein the clear water flows into a clear water chamber through a rectangular groove on a third partition plate (104), and the clear water in the clear water chamber flows out of a precipitation filtering box (1) through a clear water outlet pipe (119);
step four, when the accumulation height of the chelating salt precipitate in the precipitation chamber exceeds the height of the drain outlet (115), opening the drain outlet (115), enabling the chelating salt precipitate precipitated at the bottom end of the bottom plate (1011) to enter the inside of the auger sleeve (311) through a pipeline and a feed port (312), starting a material conveying motor (314), conveying the chelating salt precipitate into the inside of the second net drum (320), opening a driving motor (309), enabling the output end of the driving motor (309) to drive a driving belt wheel (307) to rotate, enabling the driving belt wheel (307) to drive a driven belt wheel (306) to rotate through a belt (308), enabling the driven belt wheel (306) to drive a first rotary cover (310) to rotate, enabling the first rotary cover (310) to drive a second rotary cover (317) to rotate through a first net drum (319) and a second net drum (320), enabling the output end of the heating blower (2) to enable hot air to enter the inside of the first barrel (302) through an air inlet (304) of the air inlet box (303), enabling the chelating salt precipitate to flow out of the second net drum (320) from the second net drum (319) to be sprayed out of the second net drum (316) from the second net drum (316) into fine heavy metal powder, and enabling the second net drum to blow out of the second net drum (320 to be sprayed out of fine heavy metal powder from the second net drum (316;
step five, heavy metal precipitate powder enters the dustbin (408) for collection through the powder inlet (403) and the collection cloth bag (404), when the weighing sensor (407) weighs heavy metal precipitate in the dustbin (408) and collects fully, the powder inlet (403) is closed, the box door (402) is opened, the dustbin (408) in the collecting box body (401) is taken out, the powder inlet (403) is opened again after the new dustbin (408) is replaced, and then the box door (402) is closed.
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| CN107381739A (en) * | 2017-07-25 | 2017-11-24 | 扬州境美环境工程机械有限公司 | Wastewater treatment settler |
| CN107677106A (en) * | 2017-10-09 | 2018-02-09 | 四川冠腾科技有限公司 | A kind of drying unit for flowering cherry seed |
| CN109384369A (en) * | 2018-10-26 | 2019-02-26 | 宋超 | A kind of sludge dehydration device |
| CN209957552U (en) * | 2019-05-08 | 2020-01-17 | 广州鹏锦环保科技有限公司 | Precipitation device for wastewater treatment |
| CN211546166U (en) * | 2019-12-05 | 2020-09-22 | 天津市欧川环保科技有限公司 | Reclaimed water reuse sewage treatment device |
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