An efficient integrated equipment for crystallization and turbidity removal

Abstract

The invention discloses an integrated high-efficiency crystallization and turbidity removal device, comprising an outer cylinder of a main body, a double-cylinder reactor, a water inlet pipe, a water outlet pipe and a mud discharge pipe; a water inlet cylinder is provided at the bottom of the outer cylinder of the main body, the double-cylinder reactor is located in the outer cylinder of the main body, a turbulence baffle is provided between the outer cylinder of the main body and the double-cylinder reactor, the turbulence baffle is a cylindrical structure, and a flocculation reaction zone is formed between the double-cylinder reactor and the turbulence baffle; the water inlet pipe is connected to the water inlet cylinder, the top water outlet of the outer cylinder of the main body is connected to the top inlet of the flocculation reaction zone, the bottom outlet of the flocculation reaction zone is connected to the bottom of the outer cylinder of the main body and the bottom of the area formed between the interior of the outer cylinder of the main body and the turbulence baffle, the interior of the outer cylinder of the main body and the top of the area formed between the turbulence baffle are connected to the water outlet pipe, and the mud discharge port at the bottom of the outer cylinder of the main body is connected to the mud discharge pipe. The device can realize the separate separation of calcium carbonate and magnesium hydroxide.

Description

Technical Field

[0001] The invention belongs to the technical field of water treatment and relates to a water treatment device, in particular to a high-efficiency crystallization and turbidity removal integrated device. Background Art

[0002] Membrane and thermal water treatment processes are often used for industrial wastewater treatment. In order to avoid scaling in membrane and thermal water treatment process systems, a softening pretreatment process is generally set up to remove calcium and magnesium hardness ions. Sodium hydroxide, sodium carbonate and calcium and magnesium ions are added to the reactor using a high-density tank or a machine-added tank to generate calcium carbonate and magnesium hydroxide. The solid and liquid are separated under the action of coagulants and flocculants. However, calcium carbonate and magnesium hydroxide cannot be separated separately, resulting in a large amount of waste of calcium and magnesium resources. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a high-efficiency crystallization and turbidity removal integrated equipment, which can achieve the separate separation of calcium carbonate and magnesium hydroxide.

[0004] To achieve the above-mentioned purpose, the calcium magnesium separation and resource water treatment equipment of the present invention includes a main outer cylinder, a double-cylinder reactor, a water inlet pipe, a water outlet pipe and a mud discharge pipe;

[0005] A water inlet cylinder is provided at the bottom of the main outer cylinder, a double-cylinder reactor is located in the main outer cylinder, a turbulence baffle is provided between the main outer cylinder and the double-cylinder reactor, the turbulence baffle is a cylindrical structure, and a flocculation reaction zone is formed between the double-cylinder reactor and the turbulence baffle;

[0006] The water inlet pipe is connected to the water inlet cylinder, the top water outlet of the main body outer cylinder is connected to the top inlet of the flocculation reaction zone, the bottom outlet of the flocculation reaction zone is connected to the bottom of the main body outer cylinder and the bottom of the area formed between the interior of the main body outer cylinder and the turbulence baffle, the top of the area formed between the interior of the main body outer cylinder and the turbulence baffle is connected to the water outlet pipe, and the mud discharge port at the bottom of the main body outer cylinder is connected to the mud discharge pipe.

[0007] The double-barrel reactor comprises a crystallizer outer barrel, a crystal seed feeding pipe and a crystal seed feeding port;

[0008] The outer cylinder of the crystallizer is arranged on the upper side of the outer cylinder of the main body, the bottom opening of the outer cylinder of the crystallizer is connected to the water inlet cylinder, the top opening of the outer cylinder of the crystallizer, the inner cylinder of the crystallizer, the sodium carbonate dosing device and the sodium hydroxide dosing device are arranged in sequence from top to bottom in the outer cylinder of the crystallizer, a seed discharge port is arranged on the side of the bottom of the outer cylinder of the crystallizer, one end of the seed addition pipe is connected to the seed addition port, and the other end of the seed addition pipe is inserted into the top opening of the outer cylinder of the crystallizer, and a coagulant distributor and a flocculant aid distributor are arranged in the top opening of the outer cylinder of the crystallizer.

[0009] A water distributor is provided at the top opening of the water inlet cylinder, and the seed crystal discharge port is located between the water distributor and the sodium hydroxide dosing distributor.

[0010] It also includes a clarification zone top cover, an overflow plate, a transition zone top cover and an outer cylinder of the clarification zone; the transition zone top cover is fixed at the top opening of the overflow baffle.

[0011] The bottom surface of the clarification area top cover is connected to the upper end of the overflow baffle, and the overflow plate is upright and fixed on the upper end surface of the outer cylinder of the main body. The clarification area top cover is a circular ring structure, and the inner end surface of the clarification area top cover is fixed to the outer end surface of the transition area top cover. The top opening of the outer cylinder of the clarification area is fixed to the outer end surface of the clarification area top cover, and the lower end of the outer cylinder of the clarification area is sleeved on the outer wall of the overflow plate. The overflow plate and the overflow baffle are both cylindrical structures, and the outlet pipe is connected to the water outlet at the bottom of the outer cylinder of the clarification area.

[0012] An inclined plate is provided between the turbulence baffle and the outer cylinder of the main body.

[0013] A high-level sludge sampling tube, a middle-level sludge sampling tube and a low-level sludge sampling tube are sequentially arranged on the side surface of the lower side of the outer cylinder of the main body from top to bottom.

[0014] It also includes a scraper motor. The scraper is arranged on the inner wall of the bottom of the outer cylinder of the main body. The output shaft of the scraper motor is connected to the drive shaft of the scraper.

[0015] A pH monitoring device is inserted into the flocculation reaction zone.

[0016] A water turbidity monitoring device is installed on the water outlet pipe.

[0017] The present invention has the following beneficial effects:

[0018] During specific operation, the high-efficiency integrated crystallization and turbidity removal equipment described in the present invention utilizes a double-barrel reactor to implement calcium removal by the seed crystal method inside the crystallizer, generates calcium carbonate on the surface of the seed crystal, and precipitates and separates suspended matter and the generated magnesium hydroxide in the flocculation and clarification zone, thereby achieving the purpose of removing multiple target pollutants in one device. In addition, the present invention removes calcium and magnesium by partitioning, generates high-purity calcium carbonate particles for use as a desulfurizer, and uses the generated magnesium hydroxide as a flame retardant filler and deodorant for resource recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Among them, 1 is the water inlet area, 1-1 is the water inlet pipe, 1-2 is the water distributor, 1-3 is the water inlet cylinder, 2 is the crystallization reaction area, 2-1 is the sodium hydroxide dosing distributor, 2-2 is the sodium carbonate dosing distributor, 2-3 is the outer cylinder of the crystallizer, 2-4 is the inner cylinder of the crystallizer, 2-5 is the seed sampling port, 2-6 is the seed discharge port, 2-7 is the seed feeding port, 2-8 is the pH monitoring device, 3 is the transition zone, 3-1 is the coagulant distributor, 3-2 is the coagulant aid distributor, 3-3 is the transition zone top cover, 4 It is the flocculation reaction zone, 4-1 is the baffle mixer, 4-2 is the tumble baffle, 5 is the clarification zone, 5-1 is the inclined plate, 5-2 is the top cover of the clarification zone, 5-3 is the overflow plate, 5-4 is the outer cylinder of the clarification zone, 5-5 is the main outer cylinder, 5-6 is the effluent turbidity monitoring device, 5-7 is the outlet pipe, 6 is the sludge concentration and discharge zone, 6-1 is the scraper, 6-2 is the scraper motor, 6-3 is the sludge discharge pipe, 6-4 is the low-level sludge sampling tube, 6-5 is the middle-level sludge sampling tube, and 6-6 is the high-level sludge sampling tube. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments, and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts disclosed in the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0022] The accompanying drawings illustrate schematic diagrams of the structures of the disclosed embodiments of the present invention. These figures are not drawn to scale; for the purpose of clarity, some details are exaggerated and some details may be omitted. The shapes of the various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0023] refer to Figure 1The high-efficiency crystallization and turbidity removal integrated equipment of the present invention comprises a water inlet area 1, a water inlet pipe 1-1, a water distributor 1-2, a water inlet cylinder 1-3, a crystallization reaction area 2, a sodium hydroxide dosing device 2-1, a sodium carbonate dosing device 2-2, a crystallizer outer cylinder 2-3, a crystallizer inner cylinder 2-4, a crystal seed sampling port 2-5, a crystal seed discharge port 2-6, a crystal seed feeding port 2-7, a pH monitoring device 2-8, a transition zone 3, a coagulant distributor 3-1, a coagulant aid distributor 3-2, a process Transition zone top cover 3-3, flocculation reaction zone 4, baffle mixer 4-1, tumbling baffle 4-2, clarification zone 5, inclined plate 5-1, clarification zone top cover 5-2, overflow plate 5-3, clarification zone outer cylinder 5-4, main body outer cylinder 5-5, effluent turbidity monitoring device 5-6, effluent pipe 5-7, sludge concentration and discharge zone 6, scraper 6-1, scraper motor 6-2, sludge discharge pipe 6-3, low-level sludge sampling pipe 6-4, middle-level sludge sampling pipe 6-5, and high-level sludge sampling pipe 6-6;

[0024] The upper side of the main body outer cylinder 5-5 is provided with a crystallizer outer cylinder 2-3, wherein the bottom opening of the crystallizer outer cylinder 2-3 is provided with a water inlet cylinder 1-3, the top opening of the crystallizer outer cylinder 2-3, the outer side of the crystallizer outer cylinder 2-3 is provided with a turbulence baffle 4-2, the bottom surface of the clarification area top cover 5-2 is connected to the upper end of the turbulence baffle 4-2, the overflow plate 5-3 is upright and fixed on the upper end surface of the main body outer cylinder 5-5, and the clarification area top cover 5-2 is The clarification zone has a circular ring structure, and the inner end surface of the clarification zone top cover 5-2 is fixed to the outer end surface of the transition zone top cover 3-3. The top opening of the clarification zone outer cylinder 5-4 is fixed to the outer end surface of the clarification zone top cover 5-2. The lower end of the clarification zone outer cylinder 5-4 is sleeved on the outer wall of the overflow plate 5-3. It should be noted that the overflow plate 5-3 and the overflow baffle 4-2 are both cylindrical structures; the outlet pipe 5-7 is connected to the water outlet at the bottom of the clarification zone outer cylinder 5-4;

[0025] The coagulant distributor 3-1 and the flocculant aid distributor 3-2 are both arranged in the top opening of the crystallizer outer cylinder 2-3, one end of the seed feeding pipe is connected to the seed feeding port 2-7, and the other end of the seed feeding pipe is inserted into the top opening of the crystallizer outer cylinder 2-3. The crystallizer inner cylinder 2-4, the sodium carbonate dosing distributor 2-2 and the sodium hydroxide dosing distributor 2-1 are arranged in sequence in the crystallizer outer cylinder 2-3 from top to bottom, the end of the water inlet pipe 1-1 is inserted into the water inlet cylinder 1-3, and a water distributor 1-2 is provided at the top opening of the water inlet cylinder 1-3. A seed discharge port 2-6 is provided on the side of the bottom of the crystallizer outer cylinder 2-3, wherein the seed discharge port 2-6 is located between the water distributor 1-2 and the sodium hydroxide dosing distributor 2-1, and the seed sampling port 2-5 is connected to the side of the top of the crystallizer outer cylinder 2-3.

[0026] A scraper 6-1 is provided on the inner wall of the bottom of the main outer cylinder 5-5. The bottom mud discharge port of the main outer cylinder 5-5 is connected to the mud discharge pipe 6-3. The output shaft of the scraper motor 6-2 is connected to the drive shaft of the scraper 6-1.

[0027] A high-level sludge sampling tube 6-6, a middle-level sludge sampling tube 6-5 and a low-level sludge sampling tube 6-4 are sequentially arranged on the side surface of the lower side of the main outer cylinder 5-5 from top to bottom.

[0028] Among them, the area where the coagulant distributor 3-1 and the coagulant aid distributor 3-2 are located in the outer cylinder 2-3 of the crystallizer is the transition zone 3; the area where the crystallizer inner cylinder 2-4, the sodium hydroxide dosing distributor 2-1 and the sodium carbonate dosing distributor 2-2 are located in the outer cylinder 2-3 of the crystallizer is the crystallization reaction zone 2, and the water inlet zone 1 is formed in the water inlet cylinder 1-3; a flocculation reaction zone 4 is formed between the turbulence baffle 4-2 and the outer cylinder 2-3 of the crystallizer; a deflection mixer 4-1 is provided in the flocculation reaction zone 4, and the turbulence baffle 4-2, the overflow plate 5-3, the clarification zone top cover 5-2 and the clarification zone outer cylinder 5-4 form the clarification zone 5, wherein an inclined plate 5-1 is provided between the turbulence baffle 4-2 and the main body outer cylinder 5-5.

[0029] The pH monitoring device 2-8 is inserted into the flocculation reaction zone 4, and the outlet pipe 5-7 is provided with an outlet turbidity monitoring device 5-6.

[0030] The workflow of the present invention is:

[0031] The incoming water enters the water inlet area 1 composed of the water distributor 1-2 and the water inlet cylinder 1-3 through the water inlet pipe 1-1;

[0032] Water flows evenly into the crystallization reaction zone 2 through the water distributor 1-2, and forms calcium carbonate on the surface of the seed crystals with the added sodium hydroxide and sodium carbonate. The flow rate in the crystallization reaction zone 2 is high, and the seed crystals circulate in a fluidized state in a double-barrel reactor composed of the crystallizer outer cylinder 2-3 and the crystallizer inner cylinder 2-4, thereby enhancing the reaction efficiency. Mature calcium carbonate seed crystals are discharged from the seed crystal discharge port 2-6, and fresh seed crystals are added to the double-barrel reactor from the seed crystal addition port 2-7. The pH monitoring device 2-8 monitors the pH value of the crystallization reaction zone 2 and adjusts the dosage accordingly. The purity of the calcium carbonate particles is higher than 90%.

[0033] The rising high-speed water flow enters the transition zone 3, contacts and mixes with the coagulant and coagulant aid, and then enters the flocculation reaction zone 4;

[0034] The water flows over the outer cylinder 2-3 of the crystallizer and enters the flocculation reaction zone 4. Under the action of the baffle mixer 4-1, the flocs are fully mixed and grow, and the flocs sink by gravity.

[0035] The water flows over the overflow baffle 4-2 and enters the clarification zone 5. The water flows upward through the inclined plate 5-1, where the solid-liquid separation effect is further enhanced. The water flows into the clear water area composed of the overflow baffle 4-2, the clarification zone top cover 5-2 and the overflow plate 5-3. The water flows over the overflow plate 5-3 and enters the outlet channel composed of the clarification zone outer cylinder 5-4 and the overflow plate 5-3. The water is then discharged through the outlet pipe 5-7. The outlet pipe 5-7 is equipped with an outlet turbidity monitoring device 5-6. The outlet turbidity is less than 10 NTU.

[0036] The floc sludge enters the sludge concentration and discharge area 6, and the scraper 6-1 rotates under the drive of the scraper motor 6-2. The sludge is gathered and enters the sludge discharge pipe 6-3. The height of the sludge layer is monitored through the low-level sludge sampling pipe 6-4, the middle-level sludge sampling pipe 6-5 and the high-level sludge sampling pipe 6-6.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. High-efficiency crystallization and turbidity removal integrated equipment, characterized in that: It comprises a main outer cylinder (5-5), a double-cylinder reactor, a water inlet pipe (1-1), a water outlet pipe (5-7) and a mud discharge pipe (6-3); A water inlet cylinder (1-3) is provided at the bottom of the main outer cylinder (5-5), a double-cylinder reactor is located inside the main outer cylinder (5-5), a turbulence baffle (4-2) is provided between the main outer cylinder (5-5) and the double-cylinder reactor, the turbulence baffle (4-2) being a cylindrical structure, and a flocculation reaction zone (4) is formed between the double-cylinder reactor and the turbulence baffle (4-2); The water inlet pipe (1-1) is connected to the water inlet cylinder (1-3); the top water outlet of the main body outer cylinder (5-5) is connected to the top inlet of the flocculation reaction zone (4); the bottom outlet of the flocculation reaction zone (4) is connected to the bottom of the main body outer cylinder (5-5) and the bottom of the area formed between the interior of the main body outer cylinder (5-5) and the turbulence baffle (4-2); the top of the area formed between the interior of the main body outer cylinder (5-5) and the turbulence baffle (4-2) is connected to the water outlet pipe (5-7); and the mud discharge port at the bottom of the main body outer cylinder (5-5) is connected to the mud discharge pipe (6-3); The double-barrel reactor comprises a crystallizer outer barrel (2-3), a crystal seed feeding pipeline and a crystal seed feeding port (2-7); The crystallizer outer cylinder (2-3) is arranged on the upper side of the main body outer cylinder (5-5), the bottom opening of the crystallizer outer cylinder (2-3) is connected to the water inlet cylinder (1-3), the top of the crystallizer outer cylinder (2-3) is open, and the crystallizer inner cylinder (2-4), the sodium carbonate dosing device (2-2) and the sodium hydroxide dosing device (2-1) are arranged in sequence from top to bottom in the crystallizer outer cylinder (2-3), a seed discharge port (2-6) is arranged on the side of the bottom of the crystallizer outer cylinder (2-3), one end of the seed dosing pipe is connected to the seed dosing port (2-7), and the other end of the seed dosing pipe is inserted into the top opening of the crystallizer outer cylinder (2-3), and a coagulant dosing device (3-1) and a coagulant aid dosing device (3-2) are arranged in the top opening of the crystallizer outer cylinder (2-3); A water distributor (1-2) is provided at the top opening of the water inlet cylinder (1-3), and a seed crystal discharge port (2-6) is located between the water distributor (1-2) and the sodium hydroxide dosing distributor (2-1); It also includes a clarification zone top cover (5-2), an overflow plate (5-3), a transition zone top cover (3-3) and a clarification zone outer cylinder (5-4); The transition zone top cover (3-3) is fixed to the top opening of the overflow baffle (4-2); the bottom surface of the clarification zone top cover (5-2) is connected to the upper end of the overflow baffle (4-2); the overflow plate (5-3) is vertically fixed to the upper end surface of the main body outer cylinder (5-5); the clarification zone top cover (5-2) is a circular ring structure, and the inner end surface of the clarification zone top cover (5-2) is fixed to the outer end surface of the transition zone top cover (3-3); the top opening of the clarification zone outer cylinder (5-4) is fixed to the outer end surface of the clarification zone top cover (5-2); the lower end of the clarification zone outer cylinder (5-4) is sleeved on the outer wall of the overflow plate (5-3); the overflow plate (5-3) and the overflow baffle (4-2) are both cylindrical structures; and the water outlet pipe (5-7) is connected to the water outlet at the bottom of the clarification zone outer cylinder (5-4).

2. The high-efficiency crystallization and turbidity removal integrated equipment according to claim 1, characterized in that: An inclined plate (5-1) is provided between the turbulence baffle (4-2) and the main body outer cylinder (5-5).

3. The high-efficiency crystallization and turbidity removal integrated equipment according to claim 1 is characterized in that: The side surface of the lower side of the main body outer cylinder (5-5) is sequentially connected with a high-position sludge sampling pipe (6-6), a middle-position sludge sampling pipe (6-5) and a low-position sludge sampling pipe (6-4) from top to bottom.

4. The high-efficiency crystallization and turbidity removal integrated equipment according to claim 1, characterized in that: It also includes a scraper motor (6-2). A scraper (6-1) is provided on the inner wall of the bottom of the main body outer cylinder (5-5). The output shaft of the scraper motor (6-2) is connected to the drive shaft of the scraper (6-1).

5. The high-efficiency crystallization and turbidity removal integrated equipment according to claim 1 is characterized in that: A pH monitoring device (2-8) is inserted into the flocculation reaction zone (4).

6. The high-efficiency crystallization and turbidity removal integrated equipment according to claim 1, characterized in that: An outlet water turbidity monitoring device (5-6) is provided on the outlet water pipe (5-7).

Images