CN217868149U - Device for preparing water purifying agent by recycling waste - Google Patents
Device for preparing water purifying agent by recycling waste Download PDFInfo
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- CN217868149U CN217868149U CN202222236433.XU CN202222236433U CN217868149U CN 217868149 U CN217868149 U CN 217868149U CN 202222236433 U CN202222236433 U CN 202222236433U CN 217868149 U CN217868149 U CN 217868149U
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Abstract
The utility model provides a wastes material resourceful preparation water purification agent device, include: a raw material storage device, a reaction device and a product treatment device; the raw material storage device comprises a waste alkali liquid storage tank, a waste sulfuric acid storage tank and a waste hydrochloric acid storage tank; a waste alkali outlet of the waste alkali liquid storage tank is respectively connected with a first alkali liquid buffer tank and a second alkali liquid buffer tank; the reaction device comprises a reaction tank; the product treatment device comprises a neutralization tank, a solid-liquid separation device connected with a solution discharge port of the neutralization tank, an acidification tank connected with a solid outlet of the solid-liquid separation device, a ripening tank connected with a product outlet of the acidification tank and a drying device connected with the ripening tank. Utilize the utility model discloses when can solving among the prior art and carrying out the utilization production water purifying agent to the spent acid, have spent acid raw materials source single, can only prepare liquid PAC, be unfavorable for long-distance transport, impurity dissolve in sour back, and the preparation system of can't discharging can only mix with the product, and the water purifying agent quality of preparing is poor the scheduling problem.
Description
Technical Field
The utility model relates to a waste recycling technical field, more specifically relates to a waste resource preparation water purifier device.
Background
A large amount of waste hydrochloric acid is generated in the processes of hydrochloric acid production, metal surface treatment and the like, a large amount of waste sulfuric acid is generated in the processes of halogen and chemical production, titanium dioxide production by a sulfuric acid method, metal surface treatment and the like, the waste hydrochloric acid and the waste sulfuric acid are used as dangerous wastes and need to be entrusted to relevant units for treatment, and a simple physical and chemical neutralization process is adopted, so that the resources of hydrochloric acid and sulfuric acid cannot be effectively utilized, and huge waste is caused.
The electrolytic aluminum and aluminum product processing industry can generate a large amount of aluminum ash, the aluminum ash contains a large amount of aluminum oxide and a small amount of oxides of metals such as silicon, sodium, magnesium, calcium and the like, and impurities can be removed through pretreatment such as screening and the like, so that the aluminum ash with high aluminum content is obtained. The aluminum ash contains a large amount of aluminum elements, which are treated in a landfill mode in the past, so that valuable metals cannot be well utilized, and harmful substances in the aluminum ash permeate underground along with rainwater to pollute soil and underground water, damage animals, plants and human bodies and destroy the ecological environment.
Therefore, in order to better treat the waste chemicals, a method for producing a water purifying agent by utilizing the waste chemicals is proposed in the prior art, for example, patent No. 201510962420.2, and a method for producing a polyaluminum chloride water purifying agent by using waste hydrochloric acid and aluminum ash is proposed, which mainly comprises the following steps of (1) adding industrial hydrochloric acid to a waste hydrochloric acid solution so that the hydrogen ion concentration is 2 to 4g/l. (2) The aluminum ash is circularly washed by tap water for 3-4 times, water-soluble substances in the aluminum ash are removed, and the consumption of waste acid liquor is reduced. (3) And (2) adding the aluminum ash into the waste acid solution generated in the step (1), carrying out aluminum ash dissolution reaction, and carrying out liquid-solid separation to obtain an aluminum-containing solution. (4) And (4) adding alkaline salt or alkali into the aluminum-containing solution prepared in the step (3) in batches for polymerization reaction to prepare a primary product. (5) And (4) ageing the primary product prepared in the step (4) to obtain the polyaluminium chloride water purifying agent. However, the above method has the following disadvantages: the waste hydrochloric acid is utilized, so that the raw material source is single; only liquid PAC (polyaluminium chloride) can be prepared, which is not conducive to long-distance transportation; other impurities are dissolved in acid and cannot be discharged out of the preparation system, and the impurities can only be mixed with the product, so that the prepared water purifying agent has poor quality.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the utility model aims at providing a waste recycling preparation water purifying agent device to when solving among the prior art to the spent acid carry out resource utilization production water purifying agent, exist spent acid raw materials source single, can only prepare liquid PAC, be unfavorable for long-distance transport and impurity dissolve in behind the acid, unable discharge preparation system can only mix with the product, the water purifying agent quality subalternation problem of preparation.
The utility model provides a waste resource preparation water purifier device, include: the device comprises a raw material storage device, a reaction device and a product treatment device; the raw material storage device comprises a waste alkali liquid storage tank, a waste sulfuric acid storage tank and a waste hydrochloric acid storage tank; a waste alkali outlet of the waste alkali liquid storage tank is respectively connected with a first alkali liquid buffer tank and a second alkali liquid buffer tank; the reaction device comprises a reaction tank connected with an alkali liquor outlet of the first alkali liquor buffer tank, and a raw material inlet of the reaction tank is connected with an aluminum ash conveying device; the product treatment device comprises a neutralization tank connected with a reactant outlet of the reaction tank, a solid-liquid separation device connected with a solution discharge port of the neutralization tank, an acidification tank connected with a solid outlet of the solid-liquid separation device, a ripening tank connected with a product outlet of the acidification tank, and a drying device connected with the ripening tank; a spiral conveyor is arranged at a discharge port at the bottom of the drying device; the raw material inlet of the neutralization tank is connected with the sulfuric acid outlet of the waste sulfuric acid storage tank; a raw material inlet of the acidification tank is connected with a hydrochloric acid outlet of the waste hydrochloric acid storage tank; and a raw material inlet of the ageing tank is connected with an alkali liquor outlet of the second alkali liquor buffer tank.
In addition, the preferable scheme is that an inlet of the waste alkali liquor storage tank is connected with an external alkali liquor conveying pipeline; and/or an inlet of the waste sulfuric acid storage tank is connected with an external waste sulfuric acid conveying pipeline; and/or an inlet of the waste hydrochloric acid storage tank is connected with an external waste hydrochloric acid conveying pipeline; and/or a first sodium hydroxide adding port is arranged on the first alkali liquor buffer tank; a second sodium hydroxide adding port is arranged on the second alkali liquor buffer tank; and the first sodium hydroxide adding port and the second sodium hydroxide adding port are both connected with a sodium hydroxide pipeline.
In addition, the preferable scheme is that the waste alkali liquor storage tank is connected with the first alkali liquor buffer tank through a first delivery pump; and/or the waste alkali liquor storage tank is connected with the second alkali liquor buffer tank through a second delivery pump; and/or the first alkali liquor buffer tank is connected with the reaction tank through a third delivery pump; and/or the reaction tank is connected with the neutralization tank through a fourth delivery pump; and/or the neutralization tank is connected with the waste sulfuric acid storage tank through a fifth delivery pump; and/or the neutralization tank is connected with the solid-liquid separation device through a sixth delivery pump; and/or the acidification tank is connected with the waste hydrochloric acid storage tank through a seventh delivery pump; and/or the acidification tank is connected with the ageing tank through an eighth delivery pump; and/or the ageing tank is connected with the drying device through a ninth delivery pump; and/or the ageing tank is connected with the second alkali liquor buffer tank through a tenth delivery pump.
Further, it is preferable that the solid-liquid separation apparatus comprises a filter press; the filter press is connected with a fresh water conveying device; and a wastewater outlet of the filter press is connected with a sewage treatment station.
In addition, it is preferable that the drying device includes a spray drying tower connected to the aging tank; and a hot air distributor is arranged in the spray drying tower.
In addition, preferably, the hot air inlet of the hot air distributor is connected with a hot blast stove.
Furthermore, it is preferred that the temperature of the hot blast stove is at least 300 ℃.
In addition, preferably, a vibrating screen is arranged at the bottom of the discharge hole of the spiral conveyor.
In addition, preferably, a cyclone separator is connected to the top outlet of the spray drying tower; a hopper is arranged below the cyclone separator; a discharge port of the hopper is connected with a Roots blower; the discharge port of the hopper is arranged above the feed port of the vibrating screen, and the material flowing out of the discharge port of the hopper can be blown into the vibrating screen by starting the Roots blower.
In addition, it is preferable that a level gauge is provided inside the hopper; the material level meter is in signal connection with the Roots blower.
According to the above technical scheme, the utility model provides a wastes material resourceful preparation water purifier device carries and deposits respectively waste sulfuric acid, waste hydrochloric acid and waste lye in waste sulfuric acid storage tank, waste hydrochloric acid storage tank and waste lye storage tank through carrying waste sulfuric acid, waste hydrochloric acid and waste lye, then divide into two parts with the waste lye in the waste lye storage tank and input respectively to first alkali lye buffer tank and second alkali lye buffer tank and carry out concentration adjustment, is used for preparing sodium metaaluminate solution and subsequent curing respectively; various industrial wastes are effectively utilized, the effect of recycling is achieved, and good economic benefits are achieved; the reaction product is processed by each device in the product processing device, and finally a solid product is obtained, so that the volume is greatly reduced, and the long-distance transportation is facilitated; and impurities in the raw materials can be separated from the product after acid washing, water washing and filter pressing, so that the product quality is effectively improved.
Drawings
Other objects and results of the invention will be more apparent and readily appreciated by reference to the following description taken in conjunction with the accompanying drawings, and as the invention is more fully understood. In the drawings:
FIG. 1 is a schematic structural diagram of an apparatus for preparing a water purifying agent by recycling waste according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for preparing a water purifying agent by utilizing the device for preparing a water purifying agent by recycling waste in the embodiment of the invention.
In the figure, 11-a waste alkali liquor storage tank, 12-a waste sulfuric acid storage tank, 13-a waste hydrochloric acid storage tank, 14-a first alkali liquor buffer tank, 15-a second alkali liquor buffer tank, 21-a reaction tank, 22-an aluminum ash conveying device, 31-a neutralization tank, 32-a solid-liquid separation device, 33-an acidification tank, 34-a ripening tank, 35-a drying device, 4-a packaging machine, 51-an external alkali liquor conveying pipeline, 52-an external waste sulfuric acid conveying pipeline, 53-an external waste hydrochloric acid conveying pipeline, 54-a sodium hydroxide pipeline, 61-a first conveying pump, 62-a second conveying pump, 63-a third conveying pump, 64-a fourth conveying pump, 65-a fifth conveying pump, 66-a sixth conveying pump, 67-a seventh conveying pump, 68-an eighth conveying pump, 69-a ninth conveying pump, 610-a tenth conveying pump, 7-a fresh water conveying device, 8-a hot-blast stove, 91-a spiral conveyor, 92-a vibrating screen, 93-a cyclone separator, 94-a hopper, and 95-a fan.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details.
The waste recycling water purifying agent preparation device is provided aiming at the problems that when the waste acid is recycled to produce the water purifying agent in the prior art, the source of the waste acid raw material is single, only liquid PAC can be prepared, long-distance transportation is not facilitated, impurities are dissolved in acid and cannot be discharged out of a preparation system, the impurities can only be mixed with products, the quality of the prepared water purifying agent is poor, and the like.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In order to illustrate the waste recycling preparation water purifying agent device provided by the utility model, fig. 1 shows the structure of the waste recycling preparation water purifying agent device according to the embodiment of the utility model; fig. 2 shows a method flow for preparing water purifying agent by utilizing the waste resource preparation water purifying agent device of the embodiment of the utility model.
As shown in figure 1 and figure 2 together, the utility model provides a waste resource preparation purifier device, include: a raw material storage device, a reaction device and a product treatment device; wherein, the raw material storage device comprises a waste alkali liquid storage tank 11, a waste sulfuric acid storage tank 12 and a waste hydrochloric acid storage tank 13; a waste alkali outlet of the waste alkali liquid storage tank 11 is respectively connected with a first alkali liquid buffer tank 14 and a second alkali liquid buffer tank 15; the reaction device comprises a reaction tank 21 connected with an alkali liquor outlet of the first alkali liquor buffer tank 14, and a raw material inlet of the reaction tank 21 is connected with an aluminum ash conveying device 22; the product treatment device comprises a neutralization tank 31 connected with a reactant outlet of the reaction tank 21, a solid-liquid separation device 32 connected with a solution outlet of the neutralization tank 31, an acidification tank 33 connected with a solid outlet of the solid-liquid separation device 32, a ripening tank 34 connected with a product outlet of the acidification tank 33 and a drying device 35 connected with the ripening tank 34; a spiral conveyor 91 is arranged at a discharge port at the bottom of the drying device 35; the raw material inlet of the neutralization tank 31 is connected with the sulfuric acid outlet of the waste sulfuric acid storage tank 12; a raw material inlet of the acidification tank 33 is connected with a hydrochloric acid outlet of the waste hydrochloric acid storage tank 13; the raw material inlet of the ageing tank 34 is connected with the alkali liquor outlet of the second alkali liquor buffer tank 15.
The discharge port of the screw conveyor 91 is connected with a packing machine 4.
Waste sulfuric acid, waste hydrochloric acid and waste alkali liquor are respectively conveyed and stored in a waste sulfuric acid storage tank 12, a waste hydrochloric acid storage tank 13 and a waste alkali liquor storage tank 11, and then the waste alkali liquor in the waste alkali liquor storage tank 11 is divided into two parts which are respectively input into a first alkali liquor buffer tank 14 and a second alkali liquor buffer tank 15 for concentration adjustment, and the two parts are respectively used for preparing a sodium metaaluminate solution and subsequent curing; various industrial wastes are effectively utilized, the effect of recycling is achieved, and good economic benefits are achieved; the reaction product is processed by each device in the product processing device, and finally a solid product is obtained, so that the volume is greatly reduced, and long-distance transportation is facilitated; and impurities in the raw materials can be separated from the product after acid washing, water washing and filter pressing, so that the product quality is effectively improved.
As a preferred embodiment of the present invention, an external alkali liquid conveying pipeline 51 is connected to an inlet of the waste alkali liquid storage tank 11; and/or, an external waste sulfuric acid conveying pipeline 52 is connected to the inlet of the waste sulfuric acid storage tank 12; and/or, an external waste hydrochloric acid conveying pipeline 53 is connected to the inlet of the waste hydrochloric acid storage tank 13; and/or a first sodium hydroxide adding port is arranged on the first alkali liquor buffer tank 14; a second sodium hydroxide adding port is arranged on the second alkali liquor buffer tank 15; the first sodium hydroxide inlet and the second sodium hydroxide inlet are both connected with a sodium hydroxide pipeline 54.
Waste alkali liquids generated in each industry are collected and stored in the waste alkali liquid storage tank 11 through an external alkali liquid conveying pipeline 51, waste sulfuric acids generated in each process are collected and stored in the waste sulfuric acid storage tank 12 through an external waste sulfuric acid conveying pipeline 52, waste hydrochloric acids generated in each process are collected and stored in an external waste hydrochloric acid conveying pipeline 53 through an external waste hydrochloric acid conveying pipeline 53, and the concentration of the waste alkali liquids in the first alkali liquid buffer tank 14 and the second alkali liquid buffer tank 15 can be adjusted through a first sodium hydroxide inlet, a second sodium hydroxide inlet and a sodium hydroxide pipeline 54.
As a preferred embodiment of the present invention, the waste lye storage tank 11 is connected with the first lye buffer tank 14 through the first delivery pump 61; and/or the waste alkali liquid storage tank 11 is connected with the second alkali liquid buffer tank 15 through a second conveying pump 62; and/or the first alkali liquor buffer tank 14 is connected with the reaction tank 21 through a third delivery pump 63; and/or the reaction tank 21 is connected with the neutralization tank 31 through a fourth delivery pump 64; and/or the neutralization tank 31 is connected with the waste sulfuric acid storage tank 12 through a fifth delivery pump 65; and/or the neutralization tank 31 is connected with the solid-liquid separation device 32 through a sixth delivery pump 66; and/or the acidification tank 33 is connected with the waste hydrochloric acid storage tank 13 through a seventh delivery pump 67; and/or the acidification tank 33 is connected with the ageing tank 34 through an eighth delivery pump 68; and/or, the aging tank 34 is connected to the drying device 35 by a ninth transfer pump 69. Conveying the raw materials by conveying pumps among the devices; and/or, the aging tank 34 is connected with the second lye buffer tank 15 through the tenth transfer pump 610.
As a preferred embodiment of the present invention, the solid-liquid separation device 32 includes a filter press; the filter press is connected with a fresh water conveying device 7; the waste water outlet of the filter press is connected with a sewage treatment station. The solution after the reaction is subjected to solid-liquid separation by a filter press, and simultaneously, a filter cake is washed with water, the filter press wastewater and the cleaning wastewater are sent to a sewage treatment station, and the filter cake is sent to an acidification tank 33.
As a preferred embodiment of the present invention, the drying device 35 includes a spray drying tower connected to the aging tank 34; a hot air distributor is arranged in the spray drying tower. The product is conveyed to a spray drying tower after being fully cured, enters the tower in a vaporific form through a centrifugal atomization device in the drying tower, moisture in fog beads is quickly evaporated and dried, and most of materials fall to a discharge hole at the bottom of the tower.
As a preferred embodiment of the present invention, the hot air inlet of the hot air distributor is connected to a hot blast stove 8. Hot air is produced by a hot blast stove and is used for quickly evaporating and drying fog beads in the tower. Wherein the temperature of the hot blast stove 8 is at least 300 ℃.
As a preferred embodiment of the present invention, a vibrating screen 92 is provided at the bottom of the discharge port of the screw conveyor 91. A spiral conveyor 91 is arranged at a discharge port at the bottom of the spray drying tower; a vibrating screen 92 is provided at the bottom of the discharge port of the screw conveyor 91. Most of material falls to the discharge gate at the bottom of the tower, and through the defeated 91 of below screw conveyer to shale shaker 92, the material is sieved through shale shaker 92, reduces the caking, carries to packagine machine packing afterwards.
As a preferred embodiment of the present invention, a cyclone 93 is connected to the top outlet of the spray drying tower; a hopper 94 is provided below the cyclone 93; a Roots blower 95 is connected to a discharge port of the hopper 94; the discharge hole of the hopper 94 is arranged above the feed hole of the vibrating screen 92, and the material flowing out of the discharge hole of the hopper 94 can be blown into the vibrating screen 92 by starting the Roots blower 95; a level gauge is provided inside the hopper 94; the level indicator is connected with a Roots blower 95 through signals. And discharging not more than 5% of the material from the top of the spray drying tower, separating the material by using a cyclone separator 93, dropping the material into a hopper 94 below the cyclone separator 93, arranging a material level meter in the hopper 94, and after the material is stored to a certain amount, starting a Roots blower 95 below the hopper 94 to convey the material to a vibrating screen 92.
The device for preparing the water purifying agent by recycling the waste acid and the waste alkali is used for carrying out recycling treatment on the waste acid and the waste alkali to prepare the water purifying agent, and comprises the following steps:
s1, conveying the waste alkali liquor in the waste alkali liquor storage tank 11 to a first alkali liquor buffer tank 14 and a second alkali liquor buffer tank 15 respectively, and adding sodium hydroxide into the first alkali liquor buffer tank 14 and the second alkali liquor buffer tank 15 respectively to adjust the alkali liquor concentration in the first alkali liquor buffer tank 14 to be a first alkali liquor concentration and adjust the alkali liquor concentration in the first alkali liquor buffer tank 15 to be a second alkali liquor concentration.
The sodium hydroxide is preferably industrial sodium hydroxide, and the concentration of the alkali liquor in the first alkali liquor buffer tank 14 and the concentration of the alkali liquor in the second alkali liquor buffer tank 15 are adjusted by adding the industrial sodium hydroxide, so that the subsequent use is facilitated.
S2, conveying the alkali liquor in the first alkali liquor buffer tank 14 to the reaction tank 21, adding aluminum ash into the reaction tank 21, controlling the pH value in the reaction tank 21 to be not less than 12 and the temperature to be 90 ℃, and reacting for at least 3h to obtain a reacted material.
Wherein the reaction carried out in the reaction tank 21 is: reacting aluminum ash with sodium hydroxide solution to obtain sodium metaaluminate solution (NaAlO) 2 ) The main reaction is as follows:
Al 2 O 3 +2NaOH＝2NaAlO 2 +H 2 O。
and S3, conveying the reacted materials from the reaction tank 21 to the neutralization tank 31, adding the waste sulfuric acid in the waste sulfuric acid storage tank 12 to the neutralization tank 31, enabling the pH of the materials in the neutralization tank 31 to be 7, and reacting for at least 3 hours to obtain aluminum hydroxide precipitates and a neutralized solution.
The reactions occurring in the neutralization tank 31 are: the sodium metaaluminate solution reacts with the waste sulfuric acid to generate aluminum hydroxide precipitate, and the main reaction is as follows:
2NaAlO 2 +H 2 SO 4 ＝2Al(OH) 3 +Na 2 SO 4 。
and S4, conveying the neutralized solution to a solid-liquid separation device 32 for solid-liquid separation, and cleaning to obtain a filter cake.
After the neutralization reaction, the solution is sent to a filter press through a delivery pump for solid-liquid separation, meanwhile, a filter cake is washed by water, filter pressing wastewater and cleaning wastewater are sent to a sewage treatment station, and the filter cake is sent to an acidification tank 33.
S5, conveying the filter cake into an acidification tank 33, adding the waste hydrochloric acid in the waste hydrochloric acid storage tank 13 into the acidification tank 33, and performing acidification reaction for at least 5 hours to obtain a primary polyaluminum chloride product.
Waste hydrochloric acid is added to the acidification tank 33 and reacts with aluminum hydroxide to produce polyaluminum chloride (PAC), which mainly reacts as follows:
Al(OH) 3 +HCl＝Al n (OH) m Cl (3n-m) 0＜m＜3n。
s6, conveying the polyaluminium chloride primary product into a curing tank 34, adding the alkali liquor in a second alkali liquor buffer tank 15 into the curing tank 34 to enable the basicity of the materials in the curing tank 34 to be 40% -85%, and curing for at least 8 hours to obtain a cured product.
And S7, adding the cured product into a drying device 35 for drying treatment to obtain a dried water purifying agent product.
The product is conveyed to a spray drying tower after being fully cured, and enters the tower in a mist shape through a centrifugal atomization device in the drying tower. The air is heated to 300 ℃ by a hot blast stove and is conveyed to a hot air distributor in a spray drying tower. PAC solution and hot air contact in the tower, and moisture in the fog beads evaporates rapidly, dries, and most material falls to the discharge gate at the bottom of the tower, conveys to the shale shaker through below spiral conveyer. Not more than 5% material is discharged by the top of the tower, separates through cyclone, falls into cyclone below hopper, and the hopper is equipped with the charge level indicator, and when storing to a quantitative back, starts hopper below roots's fan, carries the material to the shale shaker. The material is sieved through a vibrating screen, the caking is reduced, and then the material is conveyed to a packing machine for packing.
Wherein the concentration of the first alkali liquor is 30 percent; the concentration of the second alkali liquor is 10 percent; the drying temperature in the drying device 35 is at least 300 ℃.
In order to better describe the device for preparing the water purifying agent by recycling the waste provided by the utility model, the following specific embodiments are provided.
Example 1
The external waste alkali liquid is stored in the alkali liquid tank, the external waste sulfuric acid is stored in the sulfuric acid tank, and the external waste hydrochloric acid is stored in the hydrochloric acid tank. Conveying the waste alkali liquor to No. 1 and No. 2 alkali liquor buffer tanks, adding sodium hydroxide simultaneously, and adjusting the concentration of the alkali liquor in the buffer tanks to be 30% and 10% respectively. Conveying the prepared sodium hydroxide in the 1# alkali liquor buffer tank to a reaction tank, adding aluminum ash into the reaction tank, stirring, reacting for 3h, controlling the pH not less than 12 and the reaction temperature to be 90 ℃. The aluminum ash is reacted with a sodium hydroxide solution to prepare a sodium metaaluminate solution (NaAlO 2). After the reaction of the materials in the reaction tank is finished, the materials are conveyed to a neutralization tank, and meanwhile, waste sulfuric acid is added into the neutralization tank to adjust the pH value to about 7, and the materials are reacted for 3 hours. The sodium metaaluminate solution reacts with the waste sulfuric acid to generate aluminum hydroxide precipitate. After the neutralization reaction, the solution is sent to a filter press through a delivery pump for solid-liquid separation, meanwhile, a filter cake is washed by water, filter pressing wastewater and cleaning wastewater are sent to a sewage treatment station, and the filter cake is sent to an acidification tank. Waste hydrochloric acid is added into the acidification tank, and the waste hydrochloric acid reacts with aluminum hydroxide for 5 hours to generate polyaluminum chloride (PAC). Conveying the product in the acidification tank to the aging tank, adding 10% alkali liquor prepared by a 2# alkali liquor buffer tank into the aging tank to adjust the basicity, and aging for 8h, wherein the basicity is controlled to be 40% -85%. The product is conveyed to a spray drying tower after being fully cured, and enters the tower in a mist shape through a centrifugal atomization device in the drying tower. Air is heated to 300 ℃ by a hot blast stove and is conveyed to a hot air distributor in a spray drying tower. PAC solution and hot air contact in the tower, and moisture in the fog beads evaporates rapidly, dries, and most material falls to the discharge gate at the bottom of the tower, conveys to the shale shaker through below spiral conveyer. Not more than 5% material is discharged by the top of the tower, separates through cyclone, falls into cyclone below hopper, and the hopper is equipped with the charge level indicator, and when storing to a quantitative back, starts hopper below roots's fan, carries the material to the shale shaker. The material is sieved through a vibrating screen, the caking is reduced, and then the material is conveyed to a packing machine for packing.
According to the above embodiment, the device for preparing water purifying agent by recycling waste provided by the utility model, waste sulfuric acid, waste hydrochloric acid and waste alkali liquor are respectively conveyed and stored in the waste sulfuric acid storage tank, the waste hydrochloric acid storage tank and the waste alkali liquor storage tank, and then the waste alkali liquor in the waste alkali liquor storage tank is divided into two parts which are respectively input into the first alkali liquor buffer tank and the second alkali liquor buffer tank for concentration adjustment, and the two parts are respectively used for preparing sodium metaaluminate solution and subsequent curing; various industrial wastes are effectively utilized, the effect of recycling is achieved, and good economic benefits are achieved; the reaction product is processed by each device in the product processing device, and finally a solid product is obtained, so that the volume is greatly reduced, and the long-distance transportation is facilitated; and impurities in the raw materials can be separated from the product after acid washing, water washing and filter pressing, so that the product quality is effectively improved.
The apparatus for resource-producing water purifying agent for waste according to the present invention is described above by way of example with reference to the accompanying drawings. However, it should be understood by those skilled in the art that various modifications can be made to the apparatus for preparing water purifying agent by recycling waste as proposed in the present invention without departing from the content of the present invention. Therefore, the scope of the present invention should be determined by the content of the appended claims.
Claims (10)
1. A waste resource preparation water purifier device, which is characterized by comprising: the device comprises a raw material storage device, a reaction device and a product treatment device; wherein the content of the first and second substances,
the raw material storage device comprises a waste alkali liquid storage tank, a waste sulfuric acid storage tank and a waste hydrochloric acid storage tank; a waste alkali outlet of the waste alkali liquid storage tank is respectively connected with a first alkali liquid buffer tank and a second alkali liquid buffer tank;
the reaction device comprises a reaction tank connected with an alkali liquor outlet of the first alkali liquor buffer tank, and a raw material inlet of the reaction tank is connected with an aluminum ash conveying device;
the product treatment device comprises a neutralization tank connected with a reactant outlet of the reaction tank, a solid-liquid separation device connected with a solution discharge port of the neutralization tank, an acidification tank connected with a solid outlet of the solid-liquid separation device, a ripening tank connected with a product outlet of the acidification tank, and a drying device connected with the ripening tank; a spiral conveyor is arranged at a discharge port at the bottom of the drying device;
the raw material inlet of the neutralization tank is connected with the sulfuric acid outlet of the waste sulfuric acid storage tank; a raw material inlet of the acidification tank is connected with a hydrochloric acid outlet of the waste hydrochloric acid storage tank; and a raw material inlet of the ageing tank is connected with an alkali liquor outlet of the second alkali liquor buffer tank.
2. The apparatus for preparing water purifying agent as waste resource as claimed in claim 1, wherein,
an inlet of the waste alkali liquor storage tank is connected with an external alkali liquor conveying pipeline; and/or the presence of a gas in the gas,
an inlet of the waste sulfuric acid storage tank is connected with an external waste sulfuric acid conveying pipeline; and/or the presence of a gas in the gas,
an inlet of the waste hydrochloric acid storage tank is connected with an external waste hydrochloric acid conveying pipeline; and/or the presence of a gas in the atmosphere,
a first sodium hydroxide adding port is arranged on the first alkali liquor buffer tank; a second sodium hydroxide adding port is arranged on the second alkali liquor buffer tank; and the first sodium hydroxide adding port and the second sodium hydroxide adding port are both connected with a sodium hydroxide pipeline.
3. The apparatus for preparing water purifying agent as waste resource as claimed in claim 1, wherein,
the waste alkali liquor storage tank is connected with the first alkali liquor buffer tank through a first conveying pump; and/or the presence of a gas in the gas,
the waste alkali liquor storage tank is connected with the second alkali liquor buffer tank through a second conveying pump; and/or the presence of a gas in the gas,
the first alkali liquor buffer tank is connected with the reaction tank through a third delivery pump; and/or the presence of a gas in the gas,
the reaction tank is connected with the neutralization tank through a fourth delivery pump; and/or the presence of a gas in the gas,
the neutralization tank is connected with the waste sulfuric acid storage tank through a fifth delivery pump; and/or the presence of a gas in the gas,
the neutralization tank is connected with the solid-liquid separation device through a sixth delivery pump; and/or the presence of a gas in the gas,
the acidification tank is connected with the waste hydrochloric acid storage tank through a seventh delivery pump; and/or the presence of a gas in the gas,
the acidification tank is connected with the ageing tank through an eighth delivery pump; and/or the presence of a gas in the gas,
the ageing tank is connected with the drying device through a ninth delivery pump; and/or the presence of a gas in the gas,
the ageing tank is connected with the second alkali liquor buffer tank through a tenth delivery pump.
4. The apparatus for preparing water purifying agent as waste resource as claimed in claim 1, wherein,
the solid-liquid separation device comprises a filter press; the filter press is connected with a fresh water conveying device; and a wastewater outlet of the filter press is connected with a sewage treatment station.
5. The apparatus for preparing water purifying agent as waste resource as claimed in claim 1, wherein,
the drying device comprises a spray drying tower connected with the ageing tank;
a hot air distributor is arranged in the spray drying tower.
6. The apparatus for preparing water purifying agent as waste resource as claimed in claim 5, wherein,
and a hot air inlet of the hot air distributor is connected with a hot air furnace.
7. The apparatus for preparing water purifying agent as waste resource as claimed in claim 6, wherein,
the temperature of the hot blast stove is at least 300 ℃.
8. The apparatus for preparing water purifying agent as waste resource as claimed in claim 5, wherein,
and a vibrating screen is arranged at the bottom of the discharge hole of the spiral conveyor.
9. The apparatus for preparing water purifying agent as waste resource as claimed in claim 8, wherein,
a top outlet of the spray drying tower is connected with a cyclone separator; a hopper is arranged below the cyclone separator; a discharge port of the hopper is connected with a Roots blower; the discharge port of the hopper is arranged above the feed port of the vibrating screen, and the material flowing out of the discharge port of the hopper can be blown into the vibrating screen by starting the Roots blower.
10. The apparatus for preparing water purifying agent as waste resource as claimed in claim 9, wherein,
a material level meter is arranged in the hopper;
the material level meter is in signal connection with the Roots blower.
Priority Applications (1)
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