Acid wastewater double-material neutralization reaction device

Abstract

The utility model belongs to the technical field of acid wastewater neutralization, and particularly relates to an acid wastewater double-material neutralization reaction device which comprises a double-material gradient adding assembly, a liquid jet mixing assembly is arranged on the side of the double-material gradient adding assembly, and a stirring assembly is mounted in the liquid jet mixing assembly; the double-material gradient adding assembly comprises a wastewater reaction tank, the bottom of the wastewater reaction tank is fixedly connected with a wastewater inlet pipe, an outer-layer dosing pipe is arranged in the wastewater reaction tank, the end part of the outer-layer dosing pipe is fixedly connected with an outer-layer metering pump, and the side of the outer-layer metering pump is fixedly connected with an outer-layer connecting pipe; and along with the rising of the wastewater, the wastewater further reacts with a drug which reacts quickly and is added into the outer-layer dosing pipe, so that the neutralization reaction is layered and orderly propelled, the stability and controllability of the whole reaction process are ensured, the impact and damage to the device caused by excessive reaction are reduced, and meanwhile, the completeness and efficiency of the neutralization reaction are also favorably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to acid wastewater neutralization technical field, concretely is a kind of acid wastewater double material neutralization reaction device. BACKGROUND

[0002] In pyrometallurgical production process, a large amount of acid wastewater is usually generated, and the acid wastewater is generally treated by neutralization method, that is, by adding neutralizing agent to the acid wastewater to neutralize sulfuric acid in the wastewater and produce neutral water.

[0003] In Chinese patent CN202323543646.8, the utility model relates to the technical field of pyrometallurgical production, specifically to a kind of acid wastewater double material neutralization reaction device to solve the problem that in the neutralization treatment process of acid wastewater generated in pyrometallurgical production, due to the lack of efficient neutralization reaction device, it usually leads to insufficient reaction of neutralizing agent and acid wastewater and low utilization rate of neutralizing agent reaction, ultimately causing great influence on the overall neutralization treatment effect of acid wastewater when the sulfuric acid content in acid wastewater fluctuates greatly. The device is mainly composed of reaction cylinder, neutralization pipeline, regulating valve, pH meter and flowmeter, etc. By installing double neutralization pipeline and regulating valve on the reaction cylinder, efficient reaction of calcium carbide slag slurry and lime milk and other neutralizing agents and wastewater is effectively ensured. The setting of emergency neutralization pipeline avoids the problem of wastewater reaction treatment stagnation caused by neutralization pipeline damage, thereby affecting the overall treatment efficiency of wastewater, and greatly improves the effect of acid wastewater neutralization treatment.

[0004] The existing acid wastewater double material neutralization reaction directly adds medicine water to wastewater, and due to the lack of effective mixing and reaction mechanism, it is only simply injected. The medicine water is difficult to fully and uniformly contact with the acid wastewater, part of which is discharged without reaction or locally overreacted, causing waste of medicine water in other areas, increasing cost and possibly affecting the standard.

[0005] Therefore, an acid wastewater double material neutralization reaction device is proposed to solve the above problems. UTILITY MODEL CONTENT

[0006] To make up for the shortcomings of the prior art, the problem of the existing acid wastewater double material neutralization reaction directly adding medicine water to wastewater due to the lack of effective mixing and reaction mechanism, only simple injection, and the medicine water being difficult to fully and uniformly contact with the acid wastewater, part of which being discharged without reaction or locally overreacted, causing waste of medicine water in other areas, increasing cost and possibly affecting the standard is solved.

[0007] The utility model discloses a technical scheme that solves its technical problem is adopted: A kind of acidic wastewater double material neutralization reaction device described in the utility model, including double material gradient adding component, the side of double material gradient adding component is provided with liquid injection mixing component, and the inside of liquid injection mixing component is equipped with stirring component;Double material gradient adding component includes wastewater reaction tank, the bottom of wastewater reaction tank is fixedly connected with wastewater inlet pipe, and the inside of wastewater reaction tank is provided with outer layer dosing pipe, and the end of outer layer dosing pipe is fixedly connected with outer layer metering pump, the side of outer layer metering pump is fixedly connected with outer layer connecting pipe, and the end of outer layer connecting pipe is fixedly connected with outer layer storage tank, the side of outer layer storage tank is provided with inner layer storage tank, and the other side of inner layer storage tank is fixedly connected with inner layer connecting pipe, the end of inner layer connecting pipe is fixedly connected with inner layer metering pump, and the side of inner layer metering pump is fixedly connected with inner layer dosing pipe.

[0008] Preferably, the outer layer dosing pipe is connected to the outer layer connecting pipe through the outer layer metering pump, and the outer layer connecting pipe is connected to the outer layer storage tank.

[0009] Preferably, the inner layer dosing pipe is connected to the inner layer connecting pipe through the inner layer metering pump, and the inner layer connecting pipe is connected to the inner layer storage tank.

[0010] Preferably, the liquid injection mixing component includes a spraying storage tank, the spraying storage tank is fixedly connected with a spraying connecting pipe at the side, the end of the spraying connecting pipe is fixedly connected with a booster pump, the side of the booster pump is fixedly connected with a conduit, and the outer wall of the conduit is threadedly connected with a spray head.

[0011] Preferably, the spraying storage tank is connected to the booster pump through the spraying connecting pipe, the booster pump is connected to the spray head through the conduit, and the spray head and the conduit form a thread detachable structure.

[0012] Preferably, the stirring component includes a motor, the end of the motor is fixedly connected with a first threaded rod, the top of the first threaded rod is clamped and connected with a second threaded rod, the outer wall of the second threaded rod is threadedly connected with a nut, and the bottom of the nut is provided with a stirring rod.

[0013] Preferably, the motor is connected to the stirring rod through the first threaded rod, the nut and the second threaded rod, the first threaded rod and the second threaded rod form a clamping structure, and the first threaded rod and the second threaded rod both form a threaded structure with the nut.

[0014] The utility model has the advantages that:

[0015] 1.The utility model discloses a double-ingredient gradient adding assembly, an inner layer storage box and an outer layer storage box store neutralizing chemicals with different characteristics respectively, and the adding amount of the two chemicals can be accurately controlled through an inner layer metering pump and an outer layer metering pump.The design can flexibly adjust the ratio and adding rate of the double ingredients according to the specific composition, acidity and flow variation of acidic wastewater.For example, for acidic wastewater with large fluctuation in acidity, when the acidity suddenly increases, the adding amount of the inner layer chemical with strong alkalinity and slow reaction can be appropriately increased for preliminary buffering, and then the outer layer metering pump is used to supplement the chemical with rapid reaction to accurately adjust the pH value according to the reaction process, so that the neutralization reaction is always efficient and stable, and the adaptability of the device to different acidic wastewater is greatly improved.The inner layer chemical pipe is located inside the outer layer chemical pipe, and the acidic wastewater first contacts the chemical released by the inner layer chemical pipe after entering the reaction tank from the bottom.Because the inner layer chemical has strong alkalinity and relatively slow reaction, a preliminary neutralization area is formed at the bottom of the reaction tank, which effectively avoids the unstable phenomena such as violent heat release and large amount of foam generated by the direct reaction of the outer layer chemical with high-acidity wastewater.As the wastewater rises, it further reacts with the chemical added by the outer layer chemical pipe, so that the neutralization reaction is orderly promoted in layers, the stability and controllability of the whole reaction process are ensured, the impact and damage of the reaction on the device are reduced, and the completeness and efficiency of the neutralization reaction are improved.

[0016] 2.The utility model discloses a liquid jet mixing assembly, and the setting of the booster pump enables the alkaline material conveyed from the spraying storage tank to obtain sufficient pressure.The pressure is accurately controlled by the booster pump and can be adjusted between 0.5-2 MPa, which can ensure that the alkaline material is conveyed to the nozzle in a high-pressure state.The nozzle is specially designed to disperse the alkaline material into fine droplets under high pressure.The diameter of the fine droplets can be controlled between tens of microns and hundreds of microns.Compared with the traditional direct chemical feeding method, the contact area of the alkaline material and the acidic wastewater is greatly increased.For example, when treating acidic wastewater containing hydrochloric acid, the high-pressure jetted sodium hydroxide droplets can quickly contact and react with the volatile acidic gas of hydrochloric acid and the acidic components in the wastewater, improve the initial reaction rate, and enable the neutralization reaction to start and proceed more quickly, reducing the overall reaction time.

[0017] 3.The utility model discloses a stirring assembly is provided with, is provided with the stirring rod and can be mixed with the neutralization of medicine water in advance and melt, thereby greatly promote the effect of neutralization reaction. Before adding neutralization medicine water, the stirring rod can pass through the high -speed and uniform stirring action, promotes the neutralization medicine water of different components and the auxiliary agent etc. that can exist in the partial area of specific premixing container or reaction pool mixes fully, ensures the proportion of each material is accurate, forms the mixed medicine water system of stable and uniform nature. Meanwhile, for some solid form existing neutralization reagent, the powerful stirring of stirring rod can accelerate its melting process in solvent, makes it quickly change into the liquid state form that can supply the reaction, and disperses evenly. In this way, when with acidic waste water contact reaction, can participate in with more ideal state, the collision and the combination efficiency between acid-base ion greatly improve, and neutralization reaction can be more smoothly, efficiently carries out, effectively avoids the reaction lag, the problem of incomplete etc. that is caused by the uneven medicine water proportioning or the insufficient melting, strongly guarantees the quality and efficiency of acidic waste water treatment. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the drawing needed to use in the embodiment or prior art description briefly introduce, obviously, below description's drawing only some embodiments of the utility model, for ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0019] Figure 1 It is the overall front view of the sectional structure schematic diagram of the utility model;

[0020] Figure 2 It is the overall front view of the three-dimensional structure schematic diagram of the utility model;

[0021] Figure 3 It is the sectional structure schematic diagram of the double material gradient adding assembly of the utility model;

[0022] Figure 4 It is the three-dimensional structure schematic diagram of the liquid injection mixing assembly of the utility model;

[0023] Figure 5 It is the opening structure schematic diagram of the stirring assembly of the utility model.

[0024] In the diagram: 1. Dual-material gradient addition component; 2. Liquid jet mixing component; 3. Stirring component; 101. Wastewater reaction tank; 102. Wastewater inlet pipe; 103. Outer metering pump; 104. Outer connecting pipe; 105. Outer drug storage tank; 106. Inner drug storage tank; 107. Inner connecting pipe; 108. Inner metering pump; 109. Inner dosing pipe; 110. Outer dosing pipe; 201. Spraying drug storage tank; 202. Spraying connecting pipe; 203. Booster pump; 204. Conduit; 205. Nozzle; 301. Motor; 302. First threaded rod; 303. Nut; 304. Second threaded rod; 305. Stirring rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] Example 1

[0027] like Figure 1 The apparatus shown is a dual-material neutralization reaction device for acidic wastewater, comprising a dual-material gradient addition component 1, a liquid jet mixing component 2, and a stirring component 3.

[0028] Please see Figures 1 to 5 The apparatus shown is a dual-material neutralization reaction device for acidic wastewater, comprising a dual-material gradient addition component 1, a liquid jet mixing component 2 disposed on the side of the dual-material gradient addition component 1, and a stirring component 3 installed inside the liquid jet mixing component 2; the dual-material gradient addition component 1 includes a wastewater reaction tank 101, a wastewater inlet pipe 102 fixedly connected to the bottom of the wastewater reaction tank 101, an outer dosing pipe 110 disposed inside the wastewater reaction tank 101, an outer metering pump 103 fixedly connected to the end of the outer dosing pipe 110, an outer connecting pipe 104 fixedly connected to the side of the outer metering pump 103, and an outer storage tank 10 fixedly connected to the end of the outer connecting pipe 104. 5. An inner medicine storage tank 106 is provided on one side of the outer medicine storage tank 105, and an inner connecting pipe 107 is fixedly connected to the other side of the inner medicine storage tank 106. An inner metering pump 108 is fixedly connected to the end of the inner connecting pipe 107, and an inner dosing pipe 109 is fixedly connected to the side of the inner metering pump 108. The outer dosing pipe 110 is connected to the outer connecting pipe 104 through the outer metering pump 103, and the outer connecting pipe 104 is connected to the outer medicine storage tank 105. The inner dosing pipe 109 is connected to the inner connecting pipe 107 through the inner metering pump 108, and the inner connecting pipe 107 is connected to the inner medicine storage tank 106.

[0029] Please refer to Figure 4 The liquid injection mixing assembly 2 of the acid wastewater double material neutralization reaction device comprises a spraying storage tank 201, the side of the spraying storage tank 201 is fixedly connected with a spraying connecting pipe 202, the end of the spraying connecting pipe 202 is fixedly connected with a booster pump 203, the side of the booster pump 203 is fixedly connected with a conduit 204, and the outer wall of the conduit 204 is threadedly connected with a spray head 205; the spraying storage tank 201 and the booster pump 203 constitute a communication structure through the spraying connecting pipe 202, the booster pump 203 and the spray head 205 constitute a communication structure through the conduit 204, and the spray head 205 and the conduit 204 constitute a threadedly detachable structure.

[0030] Please refer to Figure 5 The stirring assembly 3 of the acid wastewater double material neutralization reaction device comprises a motor 301, the end of the motor 301 is fixedly connected with a first threaded rod 302, the top of the first threaded rod 302 is clampedly connected with a second threaded rod 304, the outer wall of the second threaded rod 304 is threadedly connected with a nut 303, and the bottom of the nut 303 is provided with a stirring rod 305; the motor 301, the first threaded rod 302, the nut 303, the second threaded rod 304 and the stirring rod 305 constitute a transmission structure, the first threaded rod 302 and the second threaded rod 304 constitute a clamping structure, and the first threaded rod 302 and the second threaded rod 304 both constitute a threaded structure with the nut 303.

[0031] Working principle: At the beginning of the acidic wastewater treatment, the appropriate medicine is added to the inside of the medicine storage box, then the motor 301 is turned on, the motor 301 mixes the medicine through the first threaded rod 302, the nut 303, the second threaded rod 304 and the stirring rod 305, and then the wastewater flows into the wastewater reaction tank 101 from the wastewater inlet pipe 102. At the same time, the double-ingredient gradient adding assembly 1 starts to work. The inner layer medicine storage box 106 and the inner layer metering pump 108 are connected through the inner layer connecting pipe 107, and the outer layer medicine storage box 105 and the outer layer metering pump 103 are connected through the outer layer connecting pipe 104. When the wastewater enters the reaction tank, the inner layer metering pump 108 starts first, accurately extracts the medicine with strong alkalinity but slow reaction in the inner layer medicine storage box 106, and delivers it to the bottom center area of the wastewater reaction tank 101 through the inner layer medicine adding pipe 109. Because its position is close to the wastewater inlet, the acidic wastewater first meets the alkaline medicine here, for example, calcium hydroxide solution can be used as the inner layer medicine for the acidic wastewater containing sulfuric acid, and the reaction generates calcium sulfate precipitate and water, building a preliminary neutralization area at the bottom of the reaction tank, effectively buffering the acidic impact of strong acid wastewater and reducing its acidity. As the wastewater continues to rise, the outer layer metering pump 103 starts in time, and the medicine with weak alkalinity but rapid reaction such as sodium hydroxide solution in the outer layer medicine storage box 105 is injected into the reaction tank through the outer layer medicine adding pipe 110. The outer layer medicine adding pipe 110 is surrounded outside the inner layer medicine adding pipe 109, so that the medicine with rapid reaction can fully contact with the preliminarily neutralized wastewater, further accurately adjust the pH value of the wastewater, and promote the neutralization reaction to proceed gradually and smoothly until the pH value of the wastewater reaches the ideal range. At the same time of the operation of the double-ingredient gradient adding assembly 1, the liquid jet mixing assembly 2 works cooperatively. Part of the neutralized medicine in the spraying medicine storage box 201 flows to the booster pump 203 through the spraying connecting pipe 202, and they form a communication structure. After the booster pump 203 raises the pressure of the medicine to 0.5-2 megapascals, the high-pressure medicine is pushed to the spray head 205 through the conduit 204, forming a communication delivery path. The high-pressure medicine is dispersed into numerous small droplets at the spray head 205 and sprayed into the upper space of the wastewater reaction tank 101. These droplets rapidly contact with the rising acidic wastewater gas stream and the volatilized acidic gas in the reaction tank and immediately react preliminarily. For example, if there is HCl gas volatilized from hydrochloric acid in the acidic wastewater, the sodium hydroxide droplets sprayed out will react with it to generate sodium chloride and water. The form of small droplets greatly expands the contact surface area of the medicine and the acidic substances, significantly improving the reaction rate. Subsequently, the droplets that have undergone preliminary reaction fall into the reaction tank under the action of gravity, continue to react with the wastewater in the tank and the medicine added by the double-ingredient gradient adding assembly 1, further strengthening the overall neutralization effect and promoting the reaction to develop in a more thorough direction.

[0032] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A dual-material neutralization reaction device for acidic wastewater, characterized in that: Including double material gradient adds assembly (1), the side of double material gradient adds assembly (1) is provided with liquid injection mixing assembly (2), and the inside of liquid injection mixing assembly (2) is installed with stirring assembly (3); The double material gradient adds assembly (1) includes a wastewater reaction tank (101), the bottom of the wastewater reaction tank (101) is fixedly connected with a wastewater inlet pipe (102), and the inside of the wastewater reaction tank (101) is provided with an outer layer dosing pipe (110), and the end of the outer layer dosing pipe (110) is fixedly connected with an outer layer metering pump (103), the side of the outer layer metering pump (103) is fixedly connected with an outer layer connecting pipe (104), and the end of the outer layer connecting pipe (104) is fixedly connected with an outer layer storage tank (105), one side of the outer layer storage tank (105) is provided with an inner layer storage tank (106), and the other side of the inner layer storage tank (106) is fixedly connected with an inner layer connecting pipe (107), the end of the inner layer connecting pipe (107) is fixedly connected with an inner layer metering pump (108), and the side of the inner layer metering pump (108) is fixedly connected with an inner layer dosing pipe (109).

2. The acid wastewater double material neutralization reaction device according to claim 1, characterized in that: The outer layer dosing pipe (110) is communicated with the outer layer connecting pipe (104) through the outer layer metering pump (103), and the outer layer connecting pipe (104) is communicated with the outer layer storage tank (105).

3. The acid wastewater double material neutralization reaction device according to claim 1, characterized in that: The inner layer dosing pipe (109) is communicated with the inner layer connecting pipe (107) through the inner layer metering pump (108), and the inner layer connecting pipe (107) is communicated with the inner layer storage tank (106).

4. The acid wastewater double material neutralization reaction device according to claim 1, characterized in that: The liquid injection mixing assembly (2) includes a spraying storage tank (201), the side of the spraying storage tank (201) is fixedly connected with a spraying connecting pipe (202), and the end of the spraying connecting pipe (202) is fixedly connected with a booster pump (203), the side of the booster pump (203) is fixedly connected with a conduit (204), and the outer wall of the conduit (204) is threadedly connected with a spray head (205).

5. The acidic wastewater double material neutralization reaction device according to claim 4, characterized in that: The spraying storage tank (201) is communicated with the booster pump (203) through the spraying connecting pipe (202), the booster pump (203) is communicated with the spray head (205) through the conduit (204), and the spray head (205) and the conduit (204) are threadedly detachable.

6. The acidic wastewater double material neutralization reaction device according to claim 1, characterized in that: The stirring assembly (3) includes a motor (301), the end of the motor (301) is fixedly connected with a first threaded rod (302), the top of the first threaded rod (302) is clampedly connected with a second threaded rod (304), the outer wall of the second threaded rod (304) is threadedly connected with a nut (303), and the bottom of the nut (303) is provided with a stirring rod (305).

7. The acidic wastewater double material neutralization reaction device according to claim 6, characterized in that: The motor (301) is in transmission with the first threaded rod (302), the nut (303), the second threaded rod (304) and the stirring rod (305), the first threaded rod (302) and the second threaded rod (304) are clamped, and the first threaded rod (302) and the second threaded rod (304) are threadedly connected with the nut (303).

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