Zero-emission salt-making treatment equipment for recycling coal chemical wastewater

Abstract

The utility model relates to the technical field of salt manufacturing treatment equipment, in particular to coal chemical industry wastewater recycling zero-emission salt manufacturing treatment equipment which comprises a flocculation assembly, a filtering assembly arranged under the flocculation assembly and a crystallization assembly arranged on one side of the filtering assembly and connected with the filtering assembly. The medicament cavity is communicated with the liquid dispersing pipe through the pump body and the pressure valve, the adding amount and the mixing effect of the medicament can be accurately controlled, and bubbles are generated to promote rapid flocculation of suspended matters while the wastewater is stirred through rotation of the flocculation shell and matched extrusion of the air cavity, so that the flocculation efficiency is improved, efficient flocculation is realized, and the wastewater pretreatment efficiency is improved; the gear of the brake is combined with the motor, so that the flocculation shell is overturned and stirred; due to the design of a filter membrane, a reflux valve pipe and a reflux pump in the filter assembly, suspended matters are effectively intercepted; zero discharge of wastewater is realized through a reflux mechanism and resource reutilization.

Description

Technical Field

[0001] The utility model relates to the technical field of salt production and treatment equipment, in particular to a coal chemical wastewater recycling and zero-emission salt production and treatment equipment. Background Art

[0002] Coal chemical wastewater, due to its high concentrations of organic pollutants, ammonia nitrogen, sulfates, chloride ions, and other complex inorganic salts, is significantly more difficult to treat than general industrial wastewater. This wastewater contains large amounts of recalcitrant organic matter and high concentrations of salt. If not effectively treated, direct discharge can cause serious environmental pollution, including water contamination and soil salinization. Furthermore, with water resources becoming increasingly scarce, achieving recycling and zero discharge of industrial wastewater has become a major challenge facing the coal chemical industry.

[0003] In recent years, stricter environmental protection policies have led to higher standards for industrial wastewater discharge, especially in areas with water scarcity and high environmental protection pressures. Achieving zero wastewater discharge is a mandatory policy requirement. Zero-discharge treatment of coal chemical wastewater requires not only the thorough purification of pollutants but also the recovery and reuse of useful resources in the wastewater, such as salt and water, to maximize resource utilization and improve economic benefits.

[0004] Currently, coal chemical wastewater treatment for salt production primarily involves pretreatment, biological treatment, advanced treatment, and brine treatment. The pretreatment stage involves coagulation, sedimentation, and flotation, which are used to remove suspended solids and some organic matter. Existing salt production equipment suffers from poor flocculation efficiency, and simply increasing the agitation amplitude and optimizing the flocculant is insufficient to achieve flocculation of fine particles. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a coal chemical wastewater reuse zero-emission salt production treatment equipment.

[0006] The technical solution of the utility model is a zero-emission salt production treatment device for reuse of coal chemical wastewater: comprising a flocculation component, a filter component arranged directly below the flocculation component, and a crystallization component arranged on one side of the filter component and connected to the filter component; the flocculation component comprises a flocculation shell, a hollow shaft fixedly arranged on both sides of the side wall of the flocculation shell, an inlet valve pipe and a brake arranged on one side of the hollow shaft, a liquid dispersion pipe arranged inside the other side of the hollow shaft and extending into the flocculation shell, and a reagent chamber arranged on one side of the hollow shaft and connected to the liquid dispersion pipe through a pump body and a pressure valve; the hollow shaft is connected to the interior of the flocculation shell;

[0007] A plurality of frames are circumferentially arranged on the outer side of the liquid dispersion pipe, and a paddle is arranged inside the flocculation shell. An air cavity is rotatably arranged in the frame, and a push plate is provided on one side of the air cavity. A screw is provided on the push plate for threaded connection with a nut on the side wall of the air cavity. The push plate is connected to the frame through a spring and is slidably connected to the frame. An air intake branch is rotatably sealed on one side of the air cavity, and the air intake branch is communicated with an air intake pipe provided in the liquid dispersion pipe, and the air intake pipe is communicated with the outside of the flocculation shell. A plurality of nozzles are provided on the air cavity.

[0008] Description: The diffuser tube design in the flocculation assembly can accurately control the amount of reagent added and the mixing effect. Through the rotation of the flocculation shell and the coordinated extrusion of the air cavity, bubbles are continuously generated while the wastewater is stirred. The air cavity is rotated by the nut and screw, making the bubble distribution more uniform, promoting the rapid flocculation of suspended matter and improving the flocculation efficiency. The reagent cavity is connected to the diffuser tube, and the amount of reagent is accurately adjusted through the pump body and pressure valve to ensure the flocculation effect and reduce reagent waste. The flocculation shell is flipped by the brake to promote wastewater flocculation.

[0009] Furthermore, a mounting rod for support is rotatably provided on the outer wall of the hollow shaft; the hollow shaft is rotatably sealed with the water inlet valve pipe.

[0010] Description: The mounting rod can provide additional support points to enhance the overall strength and rigidity of the hollow shaft, which is particularly important for withstanding the pressure generated by internal fluid dynamics and external mechanical loads.

[0011] Furthermore, a connector rotatably connected to the inner wall of the flocculation shell is provided at the end of the liquid dispersion pipe, and a pressure valve is provided on the liquid discharge hole of the liquid dispersion pipe.

[0012] Description: Through the multiple drainage holes on the surface of the diffusion pipe, the reagent can be evenly sprayed into the flocculation shell, increasing the contact area between the reagent and the wastewater and promoting the flocculation effect. The combination of the drainage holes and the pressure valve helps to ensure uniform discharge of multiple drainage holes when the hydraulic pressure is insufficient, prevent impurities from clogging, and ensure a continuous and stable supply of reagents.

[0013] Furthermore, the paddle is made of rubber; and the air jet head is a micro-bubble air jet head.

[0014] Note: The elastic pick can be deformed before pushing the piston rod of the next cavity, thereby jumping over the current piston rod, so that the current piston rod is reset under the action of the spring. The use of a micro-bubble jet head can squeeze out smaller bubbles in the cavity, thereby enhancing the flocculation effect.

[0015] Furthermore, the brake includes a gear arranged on the outer wall of the hollow shaft, and a motor arranged on the mounting rod and having an output shaft capable of meshing and connecting with the gear.

[0016] Description: The motor's output shaft precisely meshes with the gears, enabling precise control of the hollow shaft's rotation, whether accelerating, decelerating, or stopping. The coordinated use of the gears and motor reduces energy loss during transmission and improves energy conversion efficiency. The motor flips the flocculation shell, which promotes better binding with the flocculant than a simple stirring device.

[0017] The beneficial effects of the utility model are as follows: the medicine chamber of the utility model is connected with the dispersion pipe through the pump body and the pressure valve, which ensures the accurate addition of the medicine; when the paddle pushes the screw to squeeze the air cavity, the gas in the air cavity is ejected through the nozzle; the ejected bubbles can drive the flocs in the wastewater to move upward during the rising process in the flocculation shell, increase the collision probability between the flocs, and promote the formation and growth of the flocs; the negative charge of the microbubbles can also absorb tiny pollutants and promote the flocculation of wastewater; through the rotation of the flocculation shell and the coordinated extrusion of the air cavity, a continuous flow of pollutants is generated while the wastewater is stirred. Microbubbles can change the sedimentation characteristics of flocs, making them easier to aggregate and settle, thereby improving the efficiency of the flocculation process. The gear and motor combination of the brake, as well as the rotating sealed connection between the hollow shaft and the flocculation shell, ensure sufficient mixing and automated control of the solution during the flocculation process. The close coordination of the flocculation, filtration and crystallization components realizes a continuous treatment process from pretreatment to salt recovery, simplifies operation and improves overall treatment efficiency. Through the reflux mechanism and resource reuse, zero wastewater discharge is achieved, reducing the impact on the environment and conforming to the concept of sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a longitudinal sectional view of Example 1 of the present utility model;

[0019] Figure 2 This is a longitudinal cross-sectional view of a flocculation assembly according to Example 2 of the present utility model;

[0020] Figure 3 This is a schematic diagram of the external structure of Example 1 of the present utility model;

[0021] Figure 4 It is a side longitudinal sectional view of Example 1 of the present utility model;

[0022] Among them, 1-flocculation component, 11-flocculation shell, 12-hollow shaft, 121-mounting rod, 13-water inlet valve pipe, 14-brake, 141-gear, 142-motor, 15-dispersion pipe, 151-air cavity, 152-piston rod, 153-spring, 154-jet head, 16-medicament cavity, 17-paddle, 2-filter component, 21-filter shell, 22-filter channel, 23-filter membrane, 24-reflux valve pipe, 25-reflux pump, 3-crystallization component, 31-crystallization shell, 32-heater, 33-filter screen, 34-reflux bin, 35-evaporation chamber, 36-condenser. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below in conjunction with specific implementation methods to better reflect the advantages of the present invention.

[0024] Example 1: Figure 1 、 2 The illustrated apparatus for treating coal chemical wastewater for reuse and zero-emission salt production includes a flocculation assembly 1, a filter assembly 2 disposed directly below the flocculation assembly 1, and a crystallization assembly 3 disposed on one side of the filter assembly 2 and connected to the filter assembly 2. The flocculation assembly 1 includes a flocculation housing 11, a hollow shaft 12 fixedly disposed on both sides of the sidewalls of the flocculation housing 11, an inlet valve pipe 13 and a brake 14 disposed on one side of the hollow shaft 12, a liquid dispersion pipe 15 disposed within the interior of the hollow shaft 12 on the other side and extending into the flocculation housing 11, and a reagent chamber 16 disposed on one side of the hollow shaft 12 and connected to the liquid dispersion pipe 15 via a pump body and a pressure valve. The hollow shaft 12 is in communication with the interior of the flocculation housing 11.

[0025] A mounting ring is provided on the outside of the liquid dispersion pipe 15, and a plurality of frames are fixedly provided on the mounting ring in the circumferential direction, and a paddle 17 is provided inside the flocculation shell 11, and the paddle 17 is made of rubber; an air cavity 151 is rotatably provided in the frame, and a push plate is provided on one side of the air cavity 151, and a screw 152 is provided on the push plate for threaded connection with a nut on the side wall of the air cavity 151, and the push plate is connected to the frame by a spring 153 and is slidably connected to the frame; an air inlet branch is rotatably sealed on one side of the air cavity 151, and the air inlet branch passes through the mounting ring and is connected to the air inlet pipe provided in the liquid dispersion pipe 15, and the air inlet pipe is connected to the outside of the flocculation shell 11; a plurality of nozzles 154 are provided on the air cavity 151; a one-way valve for flow from the inside to the outside is provided in the nozzle 154;

[0026] The center of the screw 152 is provided with a cavity for installing an air intake branch pipe; the air jet head 154 is a commercially available microbubble air jet head;

[0027] The screw 152 is provided with a curved rod for intermittent contact with the paddle 17;

[0028] like Figure 1 、 3 As shown, a mounting rod 121 for support is rotatably provided on the outer wall of the hollow shaft 12; the hollow shaft 12 is rotatably and sealingly connected to the water inlet valve pipe 13;

[0029] The end of the liquid dispersing pipe 15 is provided with a connector rotatably connected to the inner wall of the flocculation shell 11, and a pressure valve is provided on the discharge hole of the liquid dispersing pipe 15;

[0030] The brake 14 includes a gear 141 provided on the outer wall of the hollow shaft 12, and a motor 142 provided on the mounting rod 121 and having an output shaft capable of meshing with the gear 141;

[0031] like Figure 1 、 3 As shown, the filter assembly 2 includes a filter housing 21 connected to the liquid outlet of the flocculation housing 11, a filter channel 22 provided inside the filter housing 21, a filter membrane 23 provided inside the filter channel, and a reflux valve pipe 24 and a reflux pump 25 provided on the filter housing 21 and used to connect the inlet and outlet of the filter channel 22; the filter assembly 2 is located directly below the flocculation housing 11, and a guide pipe and a screen connected to the interior of the filter housing 21 are provided on the top of the filter housing 21;

[0032] like Figure 3 、 4 As shown, the crystallization assembly 3 includes a crystallization shell 31 connected to the filter shell 21, a heater 32 arranged inside the crystallization shell 31, a filter screen 33 arranged at the bottom of the crystallization shell 31, a reflux bin 34 arranged at the bottom of the filter screen 33 and connected to the interior of the crystallization shell 31 through a conduit and a pump body, and an evaporation chamber 35 and a condenser 36 arranged on the crystallization shell 31; the evaporation chamber 35 is connected to the interior of the crystallization shell 31, and a discharge valve is provided on the crystallization shell 31; the motor 142, heater 32, evaporation chamber 35 and condenser 36 are all commercially available products and are not described here.

[0033] The working principle of this embodiment is as follows: sewage enters the flocculation housing 11 from the water inlet valve pipe 13, the agent chamber 16 transports the flocculant to the dispersion pipe 15 through the pump body and the pressure valve, and is evenly dispersed in the water through the drainage holes on its surface, causing the pollutants to condense into larger particles. The rotation of the flocculation housing 11 further mixes the liquid, and the paddle 17 pokes the air chamber 151 to compress the jet, promoting the dispersion of the flocculant, helping to flocculate the pollutant particles and improve the flocculation efficiency. Then, the flocculation housing 11 is closed and rotated, and left to stand for a period of time to allow the flocculated pollutants to settle. The brake 14 can be driven by the motor 1 42 controls the rotation speed or stops to regulate the flocculation conditions; the flocculated pollutants are discharged, and the flocculated sewage is then filtered through the filter housing 21 of the filter assembly 2. The guide pipe guides the water flow smoothly through the screen, intercepts large particles of debris, and reduces the load of the filter membrane 23; the filter membrane 23 is finely filtered and discharged through the outlet. The further purified concentrated brine flows into the crystallization housing 31. The heater 32 heats the evaporation chamber 35 to promote water evaporation. The condenser 36 captures the steam and converts it into distilled water for recycling. The solid salt is deposited on the filter screen 33 and ensures sufficient crystallization through the reflux bin 34 at the bottom.

[0034] Example 2: This example differs from Example 1 in that a connecting piece rotatably connected to the inner wall of the flocculation shell 11 is provided at the end of the liquid diffusion pipe 15 .

[0035] Example 3: This example is different from Example 1 in that a pressure valve is provided on the liquid discharge hole of the liquid dispersing pipe 15 .

[0036] Example 4: This example differs from Example 1 in that the contact surfaces of the paddle 17 and the curved rod are both provided with anti-slip stripes.

[0037] Example 5: This example differs from Example 1 in that the contact surfaces of the paddle 17 and the crankshaft are both provided with anti-collision pads, which are commercially available products.

Claims

1. A coal chemical wastewater reuse and zero-discharge salt production treatment equipment, characterized in that: The invention comprises a flocculation component (1), a filter component (2) arranged directly below the flocculation component (1), and a crystallization component (3) arranged on one side of the filter component (2) and connected to the filter component (2); the flocculation component (1) comprises a flocculation shell (11), a hollow shaft (12) fixedly arranged on both sides of the side wall of the flocculation shell (11), an inlet valve pipe (13) and a brake (14) arranged on one side of the hollow shaft (12), a liquid dispersion pipe (15) arranged inside the hollow shaft (12) on the other side and extending into the flocculation shell (11), and a medicine chamber (16) arranged on one side of the hollow shaft (12) and connected to the liquid dispersion pipe (15) through a pump body and a pressure valve; the hollow shaft (12) ) is connected to the inside of the flocculation shell (11); a plurality of frames are circumferentially arranged on the outer side of the liquid dispersion pipe (15), and a paddle (17) is arranged inside the flocculation shell (11); an air cavity (151) is rotatably arranged in the frame, a push plate is provided on one side of the air cavity (151), a screw (152) is provided on the push plate and is threadedly connected to a nut on the side wall of the air cavity (151), the push plate is connected to the frame through a spring (153), and is slidably connected to the frame; an air intake branch is rotatably sealed on one side of the air cavity (151), the air intake branch is connected to the air intake pipe provided in the liquid dispersion pipe (15), and the air intake pipe is connected to the outside of the flocculation shell (11); a plurality of nozzles (154) are provided on the air cavity (151).

2. A coal chemical wastewater reuse and zero-emission salt production treatment equipment according to claim 1, characterized in that: A mounting rod (121) for support is rotatably provided on the outer wall of the hollow shaft (12); the hollow shaft (12) is rotatably sealedly connected to the water inlet valve pipe (13).

3. The coal chemical wastewater reuse and zero-emission salt production treatment equipment according to claim 1 is characterized in that: The end of the liquid dispersion pipe (15) is provided with a connecting piece rotatably connected to the inner wall of the flocculation shell (11), and the drainage hole of the liquid dispersion pipe (15) is provided with a pressure valve.

4. A coal chemical wastewater reuse and zero-emission salt production treatment equipment according to claim 3, characterized in that: The paddle (17) is made of rubber; the air jet head (154) is a micro-bubble air jet head.

5. The coal chemical wastewater reuse and zero-emission salt production treatment equipment according to claim 1 is characterized in that: The brake (14) comprises a gear (141) arranged on the outer wall of the hollow shaft (12), and a motor (142) arranged on the mounting rod (121) and having an output shaft capable of meshing with the gear (141).

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