Acid-base neutralization equipment for treating sulfuric acid-containing wastewater

Abstract

The utility model relates to the technical field of sewage treatment, in particular to acid-base neutralization equipment for treating sulfuric acid-containing wastewater, which comprises a water mixing tank and a neutralization solution pre-storage tank which are arranged adjacently, a water mixing tank is reserved in the water mixing tank body; a water inlet located above the head end of the water mixing tank is reserved in the water mixing tank, and a drainage pipe communicated with the tail end of the water mixing tank is further arranged on one side of the water mixing tank; a neutralization pipeline is communicated between the water mixing tank and the neutralization liquid pre-storage tank, and a delivery pump is arranged on the neutralization pipeline; a mixing mechanism is also arranged in the water mixing tank of the water mixing tank and is used for mixing wastewater and a neutralizing solution. The efficient mixing of the wastewater and the neutralization liquid is realized. A spiral blade arranged in the mixing mechanism guides and accelerates the flowing of the wastewater at the initial stage of entering the wastewater, and the wastewater is preliminarily dispersed; and then, the fan-shaped blades generate a stronger stirring effect in the subsequent stage, so that the full contact and reaction of the wastewater and the neutralization liquid are ensured, and the neutralization efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to acid-base neutralization equipment for treating sulfuric acid-containing wastewater. Background Art

[0002] Industrial production processes, particularly in the chemical, metallurgical, and electroplating industries, often generate wastewater containing sulfuric acid. If discharged without treatment, this wastewater can cause serious environmental pollution, including water acidification, soil erosion, and disruption to the food chain.

[0003] For sulfuric acid-containing wastewater, alkaline substances such as sodium hydroxide (NaOH) and calcium hydroxide (Ca(OH)2) are commonly used as neutralizing agents. These alkaline substances can neutralize sulfuric acid to produce harmless sulfates and water, thereby reducing the acidity of the wastewater and meeting environmental discharge standards.

[0004] Many existing devices lack efficient mixing mechanisms, resulting in inadequate mixing of wastewater and neutralizing solution. This leads to a long reaction time for neutralization, impacting treatment efficiency. Some devices also have complex designs and numerous internal components, increasing manufacturing costs and making routine maintenance and cleaning difficult. Utility Model Content

[0005] The utility model aims at the technical problems existing in the prior art and provides an acid-base neutralization device for treating sulfuric acid-containing wastewater to solve the problem of low efficiency in the neutralization process of wastewater treatment.

[0006] The utility model provides a technical solution for solving the above-mentioned technical problems as follows: an acid-base neutralization device for treating sulfuric acid-containing wastewater, comprising a mixing water box and a neutralization liquid pre-storage tank arranged adjacent to each other; a mixing water tank is reserved in the mixing water box; a water inlet is reserved on the mixing water box above the head end of the mixing water tank, and a drain pipe connected to the tail end of the mixing water tank is also provided on one side of the mixing water box; a neutralization pipeline is connected between the mixing water box and the neutralization liquid pre-storage tank, and a delivery pump is installed on the neutralization pipeline; a mixing mechanism is also provided in the mixing water tank of the mixing water box, and the mixing mechanism is used to mix wastewater and neutralization liquid.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the mixing mechanism includes:

[0009] A drive shaft arranged along the length of the mixing tank;

[0010] An external motor drive component drivingly connected to the drive shaft;

[0011] A spiral blade provided at the front end of the driving shaft for mixing water;

[0012] The fan-shaped blades are installed at the rear section of the driving shaft for mixing water.

[0013] Furthermore, the output end of the neutralization pipeline and the water inlet of the mixing tank are both close to the spiral blade side.

[0014] Furthermore, the external motor drive component is assembled from a motor and a reducer, the output shaft of the motor is connected to the input end of the reducer, and the output end of the reducer is connected to the drive shaft.

[0015] Furthermore, a water inlet tank is also provided at the water inlet of the mixing water tank.

[0016] Furthermore, a convex portion surrounding the inner wall of the water inlet tank is formed, and a detachable primary filter plate is provided on the convex portion.

[0017] Furthermore, the water inlet port of the water inlet box is in a flared shape.

[0018] Moreover, the acid-base neutralization equipment for treating sulfuric acid-containing wastewater provided by the present invention has at least the following beneficial effects compared with the prior art:

[0019] 1. This equipment achieves efficient mixing of wastewater and neutralizing liquid through its innovative mixing mechanism design. The spiral blades built into the mixing mechanism guide and accelerate the flow of wastewater upon initial entry, initially dispersing the wastewater. Subsequently, the fan-shaped blades produce a more intense stirring effect in subsequent stages, ensuring full contact and reaction between the wastewater and neutralizing liquid, thereby significantly improving neutralization efficiency. Furthermore, the added water inlet tank and primary filter screen effectively enhance pretreatment capabilities, intercepting large particles and suspended solids, and preventing impurities from entering the mixing tank, causing blockage or affecting mixing. The flared water inlet port design optimizes the wastewater inflow process, extending the service life of the primary filter screen and improving filtration effectiveness.

[0020] 2. The equipment boasts a compact overall layout and tightly connected components. The entire treatment process, from wastewater inlet and pretreatment to neutralization reaction and discharge, is automated and highly efficient, reducing labor costs and improving treatment efficiency. Furthermore, the removable pre-filter screen greatly facilitates cleaning and replacement, reducing the complexity and time cost of equipment maintenance. Furthermore, the overall structure of the equipment facilitates routine inspection and maintenance, ensuring long-term stable operation. These features collectively contribute to the significant advantages of this acid-base neutralization equipment in the wastewater treatment field. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] 1. Mixing tank; 1.1. Mixing tank; 2. Neutralizing liquid pre-storage tank; 3. Drain pipe; 4. Neutralizing pipeline; 5. Delivery pump; 6. Mixing mechanism; 6.1. Drive shaft; 6.2. External motor drive; 6.3. Spiral blades; 6.4. Fan-shaped blades; 7. Water inlet tank; 7.1. Raised part; 8. Primary filter plate. DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] It should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integrated structures. Those skilled in the art will understand the specific meanings of such terms in this patent based on specific circumstances.

[0027] like Figure 1 and Figure 2 As shown, the acid-base neutralization equipment for treating sulfuric acid-containing wastewater of the present invention comprises a mixing tank 1 and a neutralizing liquid pre-storage tank 2 arranged adjacent to each other; a mixing tank 1.1 is reserved in the mixing tank 1; a water inlet located above the head end of the mixing tank 1.1 is reserved on the mixing tank 1, and a drain pipe 3 connected to the tail end of the mixing tank 1.1 is also provided on one side thereof; a neutralization pipeline 4 is connected between the mixing tank 1 and the neutralizing liquid pre-storage tank 2, and a delivery pump 5 is installed on the neutralization pipeline 4; a mixing mechanism 6 is also provided in the mixing tank 1.1 of the mixing tank 1, and the mixing mechanism 6 is used to mix wastewater and neutralizing liquid.

[0028] The acid-base neutralization treatment of wastewater is achieved through the adjacently arranged mixing tank 1 and neutralizing liquid pre-storage tank 2. Wastewater enters the reserved mixing tank 1.1 through the water inlet of the mixing tank 1. Simultaneously, neutralized liquid from the neutralizing liquid pre-storage tank 2 is delivered to the mixing tank 1.1 via a neutralization pipeline 4 and a delivery pump 5. Within the mixing tank 1.1, a mixing mechanism 6 efficiently mixes the wastewater and neutralizing liquid, allowing them to react fully and neutralize the sulfuric acid. The resulting wastewater is discharged through a drain pipe 3, completing the treatment process.

[0029] The core of the entire device lies in the design of the mixing mechanism 6, which ensures that the wastewater and neutralizing solution can be mixed quickly and evenly, thereby improving the neutralization efficiency. At the same time, the device has a compact layout and is easy to operate, achieving automation and efficiency in wastewater treatment.

[0030] As an embodiment, the mixing mechanism 6 includes:

[0031] A drive shaft 6.1 is arranged along the length of the mixing tank 1.1;

[0032] An external motor drive member 6.2 drivingly connected to the drive shaft 6.1;

[0033] The spiral blade 6.3 is provided at the front of the water mixing section of the driving shaft 6.1;

[0034] The fan-shaped blades 6.4 are arranged at the rear section of the driving shaft 6.1 for mixing water.

[0035] Specifically, the output end of the neutralization pipeline 4 and the water inlet of the mixing tank 1 are both close to the side of the spiral blade 6.3.

[0036] Specifically, the external motor drive component 6.2 is assembled from a motor and a reducer, the output shaft of the motor is connected to the input end of the reducer, and the output end of the reducer is connected to the drive shaft 6.1.

[0037] The mixing mechanism 6 mainly consists of a drive shaft 6.1, an external motor drive 6.2, spiral blades 6.3, and fan blades 6.4. The external motor drive 6.2 is an integrated component of a motor and a reducer. It drives the drive shaft 6.1 to rotate through the power output of the motor, which is reduced and increased in torque by the reducer.

[0038] Drive shaft 6.1 runs along the length of mixing tank 1.1, with blades of different types mounted on either end. Spiral blades 6.3 are installed at the front end of the mixing tank, just as the wastewater enters mixing tank 1.1. Spiral blades 6.3 are designed to guide and accelerate the flow of wastewater, while also creating a certain stirring effect, providing initial dispersion within the tank.

[0039] As drive shaft 6.1 continues to rotate, the wastewater is carried to the rear section of the mixing tank. There, fan blades 6.4 come into play. The design of fan blades 6.4 produces a more intense stirring and mixing effect, ensuring that the wastewater and the neutralizing liquid output from neutralization line 4 fully contact and react. Because the output end of neutralization line 4 and the water inlet of mixing tank 1 are both close to spiral blades 6.3, this helps the neutralizing liquid mix with the wastewater at an early stage of its flow, improving neutralization efficiency.

[0040] As an embodiment, a water inlet tank 7 is further provided at the water inlet of the mixing water tank 1 .

[0041] Specifically, a convex portion 7.1 surrounding the inner wall of the water inlet box 7 is formed, and a detachable primary filter plate 8 is provided on the convex portion 7.1.

[0042] In addition, the water inlet port of the water inlet box 7 is in a flared shape.

[0043] The water inlet port of the water inlet tank 7 is designed to be flared, which helps to guide the wastewater to flow into the water inlet tank 7 more smoothly and reduce the impact of the water flow on the primary filter screen 8, thereby extending the service life of the primary filter screen 8 and improving its filtering effect.

[0044] The filter plate 8 can be easily installed and removed, making it easy to clean and replace. The primary filter plate 8's primary function is to intercept large particles and suspended matter in the wastewater, preventing them from entering the subsequent mixing and treatment processes. This helps remove large particles, suspended matter, and other impurities from the wastewater, preventing these impurities from directly entering the mixing tank 1 and potentially causing blockage or affecting the mixing effect.

[0045] It should be noted that, in this article, the terms "include", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device. Unless otherwise expressly specified and limited, the terms "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0046] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0047] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. An acid-base neutralization device for treating sulfuric acid-containing wastewater, characterized in that: The invention comprises a mixing tank (1) and a neutralizing liquid pre-storage tank (2) arranged adjacent to each other; a mixing tank (1.1) is reserved in the mixing tank (1); a water inlet is reserved on the mixing tank (1) above the head end of the mixing tank (1.1), and a drainage pipe (3) is provided on one side thereof and is connected to the tail end of the mixing tank (1.1); a neutralization pipeline (4) is connected between the mixing tank (1) and the neutralizing liquid pre-storage tank (2), and a delivery pump (5) is installed on the neutralization pipeline (4); a mixing mechanism (6) is also provided in the mixing tank (1.1) of the mixing tank (1), and the mixing mechanism (6) is used to mix wastewater and neutralizing liquid; The mixing mechanism (6) comprises: A drive shaft (6.1) arranged along the length of the mixing tank (1.1); An external motor drive member (6.2) drivingly connected to the drive shaft (6.1); A spiral blade (6.3) is provided at the front section of the driving shaft (6.1) for mixing water; The fan-shaped blades (6.4) are arranged at the rear section of the driving shaft (6.1) for mixing water.

2. The acid-base neutralization equipment for treating sulfuric acid-containing wastewater according to claim 1, characterized in that: The output end of the neutralization pipeline (4) and the water inlet of the mixing tank (1) are both close to the side of the spiral blade (6.3).

3. The acid-base neutralization equipment for treating sulfuric acid-containing wastewater according to claim 1, characterized in that: The external motor drive component (6.2) is assembled from a motor and a reducer, the output shaft of the motor is connected to the input end of the reducer, and the output end of the reducer is connected to the drive shaft (6.1).

4. The acid-base neutralization equipment for treating sulfuric acid-containing wastewater according to claim 1, characterized in that: A water inlet box (7) is also provided at the water inlet of the mixing water box (1).

5. The acid-base neutralization equipment for treating sulfuric acid-containing wastewater according to claim 4, characterized in that: The inner wall of the water inlet box (7) is formed with a surrounding raised portion (7.1), and a detachable primary filter plate (8) is provided on the raised portion (7.1).

6. The acid-base neutralization equipment for treating sulfuric acid-containing wastewater according to claim 4, characterized in that: The water inlet port of the water inlet box (7) is in a flared shape.

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