Decoloring and sterilizing all-in-one machine and application thereof

Abstract

The invention relates to a decoloring and sterilizing all-in-one machine which comprises an outer cylinder, an inner cylinder is arranged in the outer cylinder, an air flotation area is formed in the space between the inner cylinder and the outer cylinder, the upper end of the air flotation area is communicated with a scum collecting chamber, and the scum collecting chamber is arranged at the upper end of the outer cylinder. The lower end of the scum collecting chamber is sleeved on the periphery of the opening part of the outer cylinder and is in sealing connection with the outer cylinder, the upper end of the scum collecting chamber is covered with a sealing cover, the interior of the scum collecting chamber is communicated with a scum storage device outside the outer cylinder, and the air flotation area is respectively communicated with a raw water tank and a micro-nano bubble generator. According to the all-in-one machine, substances such as suspended solids in a water body are removed through a large number of small bubbles, intermediate treated water is obtained, then ozone evenly enters the intermediate treated water, chromaticity, bacteria, viruses and the like in the intermediate treated water are efficiently inactivated, the removal rate of the substances such as the suspended solids is high, and the treatment effect is good. The ozone utilization rate can be remarkably improved, and ozone consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the field of sewage treatment equipment in the papermaking industry, and in particular to an integrated equipment capable of removing chromaticity in water, sterilizing and disinfecting, and application thereof. Background Art

[0002] At present, for the treatment of water reuse in industrial production, the most common method for removing color is decolorizing / bleaching agents; the most common methods for sterilization and disinfection are bactericides, ultraviolet rays, etc. Decolorizing / bleaching agents are mostly strong oxidants. If they remain in the reused water, it will affect the quality of the product, causing difficulty in coloring or uneven color. The main disadvantage of using bactericides for disinfection and sterilization is that they cannot inactivate bacteria in the spore state. The direct consequence is that the bactericide needs to be replaced frequently, and the sterilization effect is not ideal. Ultraviolet rays also cannot inactivate bacteria in the spore state.

[0003] Ozone has strong oxidizing properties. While removing color, it also has a broad-spectrum bactericidal effect. The use of ozone for decolorization and sterilization is timely. However, the consumption of ozone by suspended matter, COD / BOD, oils, colloidal substances, etc. in the water is very large, resulting in a very low efficiency of ozone decolorization and sterilization. The energy consumption required for the preparation of ozone is very high, which limits the scope of application of ozone in industrial water treatment. In the existing treatment method, flotation is also used to remove suspended matter and other substances in the wastewater before ozone sterilization. However, the flotation effect of the flotation treatment device is not ideal and it is set separately from the ozone treatment device, resulting in a long wastewater treatment line, large space occupation, and high construction and operating costs. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention proposes an all-in-one decolorization and sterilization machine, which can realize flotation and ozone sterilization of wastewater in sequence, thereby improving the efficiency of ozone decolorization and sterilization, achieving good water treatment effect, saving space occupied by wastewater treatment lines, and greatly reducing wastewater treatment costs.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a decolorizing and sterilizing integrated machine, comprising: an outer cylinder, an inner cylinder arranged inside the outer cylinder, a flotation zone formed in the space between the inner cylinder and the outer cylinder, an upper end of the flotation zone being communicated with a scum collecting chamber, the scum collecting chamber being arranged at the upper end of the outer cylinder, a lower end of the scum collecting chamber being sleeved on the periphery of an opening of the outer cylinder and being sealed and connected with the outer cylinder, a sealing cover being provided at the upper end of the scum collecting chamber, an interior of the scum collecting chamber being communicated with a scum collecting device outside the outer cylinder through a first pipe, the flotation zone being communicated with a raw water pool and a micro-nano bubble generator respectively through a second pipe, an interior of the inner cylinder being communicated with a purified water collecting device arranged outside the outer cylinder through a third pipe, a liquid inlet of a gas-liquid mixing pump through a fourth pipe, a gas flotation zone through an eighth pipe, a gas inlet of the gas-liquid mixing pump being communicated with a fifth pipe for supplying ozone, an outlet of the gas-liquid mixing pump being communicated with the interior of the inner cylinder through a sixth pipe, a scum collecting chamber being communicated with the scum collecting chamber through a seventh pipe, and a tail gas collecting device being communicated with the scum collecting chamber through a ninth pipe.

[0007] Specifically, the upper end of the outer cylinder is higher than the lower end of the scum collecting chamber, the upper end of the inner cylinder is higher than the upper end of the outer cylinder, and the upper end of the scum collecting chamber is higher than the upper end of the inner cylinder.

[0008] Specifically, one end of the first pipe connected to the slag collection chamber is located at the lower end of the slag collection chamber, one end of the second pipe connected to the flotation zone is located in the middle of the flotation zone, one end of the eighth pipe connected to the inner cylinder is located at the upper part of the inner cylinder, and one end connected to the flotation zone is located at the lower end of the flotation zone.

[0009] Specifically, a partition is provided at the lower end of the inner cylinder, and the partition is sealed with the side wall of the inner cylinder around it, and water inlet holes are arranged at intervals on the partition. The area surrounded by the partition, the side wall of the inner cylinder and the lower wall of the inner cylinder forms a clean water collection chamber. One end of the third pipe connected to the inner cylinder and one end of the fourth pipe connected to the inner cylinder are both located in the clean water collection chamber, and one end of the sixth pipe connected to the inner cylinder is located at the upper end of the partition.

[0010] Specifically, an ozone release chamber is arranged at the upper end of the water purification chamber, one end of the sixth pipe connected to the inner cylinder is located in the ozone release chamber, there is a gap between the side wall of the ozone release chamber and the side wall of the inner cylinder, the water inlet is located between the inner cylinder and the ozone release chamber, and air outlet holes are evenly spaced on the top plate of the ozone release chamber.

[0011] Specifically, the eighth pipeline includes a first main pipe, one end of which is located at the upper part of the inner cylinder, and the other end is connected to the first branch pipe, and one end of the first branch pipe away from the first main pipe is located at the lower end of the air flotation area.

[0012] Specifically, a plurality of first branch pipes are provided, and ends of the plurality of first branch pipes away from the first main pipe are evenly spaced and arranged at the lower end of the air flotation area.

[0013] Specifically, the seventh pipeline includes a second main pipe and a second branch pipe. One end of the second main pipe is connected to the outlet of the gas-liquid mixing pump, and the other end passes through the sealing cover to communicate with multiple second branch pipes respectively. The ends of the multiple second branch pipes away from the second main pipe are evenly spaced and arranged on the periphery of the upper end of the outer cylinder.

[0014] Specifically, the upper end of the outer cylinder is 0.2-0.6 m higher than the lower end of the slag collection chamber, the upper end of the inner cylinder is 0.3-0.5 m higher than the upper end of the outer cylinder, and the upper end of the slag collection chamber is 0.3-0.5 m higher than the upper end of the inner cylinder.

[0015] The present invention also proposes to apply the above-mentioned decolorizing and sterilizing integrated machine to the field of wastewater treatment in the papermaking industry.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The present invention provides a decolorization and sterilization integrated machine, which first removes suspended matter and other substances in the water body through a large number of fine bubbles, especially can classify and remove substances with hydrophilic surface and hydrophobic surface to obtain intermediate treated water, and then make ozone evenly enter the intermediate treated water, and use the strong oxidizing property of ozone dissolved in water to efficiently inactivate the chromaticity, bacteria, viruses, etc. in the intermediate treated water. The removal process of suspended matter and other substances of the present invention has a high removal rate, which can significantly improve the efficiency of ozone in decolorization and sterilization and disinfection, and save ozone consumption;

[0018] (2) The decolorizing and sterilizing integrated machine of the present invention is of sealed design, and the ozone overflowing from the water can be recycled, which improves the utilization rate of ozone and causes no secondary pollution to the environment;

[0019] (3) The decolorization and sterilization all-in-one machine of the present invention integrates the functions of flotation treatment and ozone treatment, occupies a small space, has low equipment cost and low operating cost. Water flows from one area to another inside the all-in-one machine by the natural pressure of the water body, which ensures the wastewater treatment effect while reducing the setting of pumps for pumping equipment, further reducing the energy consumption of the water treatment line and saving operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the integrated machine of the present invention;

[0021] Figure 2 It is a top view of the structure of the ozone release chamber of the present invention;

[0022] Figure numerals: 1, ninth pipeline, 2, sealing cover, 3, scum collection chamber, 4, first pipeline, 5, outer cylinder, 6, flotation area, 7, micro-nano bubble generator, 8, second pipeline, 9, inner cylinder, 10, third pipeline, 11, clean water collection chamber, 12, partition, 1201, water inlet, 13, ozone release chamber, 1301, air outlet, 14, fourth pipeline, 15, fifth pipeline, 16, gas-liquid mixing pump, 17, sixth pipeline, 18, eighth pipeline, 1801, first main pipe, 1802, first branch pipe, 19, seventh pipeline, 1901, second main pipe, 1902, second branch pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1

[0025] The present embodiment proposes a decolorizing and sterilizing integrated machine, including an outer cylinder 5, an inner cylinder 9 is arranged inside the outer cylinder 5, the lower end of the inner cylinder 9 is sealed and connected to the bottom wall of the outer cylinder 5, the space between the side wall of the inner body and the side wall of the outer cylinder 5 forms a flotation zone 6, the upper end of the flotation zone 6 is connected to the scum collecting chamber 3, the scum collecting chamber 3 is arranged at the upper end of the outer cylinder 5, the lower end of the scum collecting chamber 3 is sleeved on the outer periphery of the mouth of the outer cylinder 5 and is sealed and connected to the outer cylinder 5, the upper end of the scum collecting chamber 3 is covered with a sealing cover 2, the interior of the scum collecting chamber 3 is connected to the scum collecting device outside the outer cylinder 5 through the first pipe 4, and the flotation zone 6 is respectively connected to the raw water pool and the second pipe 8. The micro-nano bubble generator 7 arranged outside the outer cylinder 5 is connected, the interior of the inner cylinder 9 is also connected to the purified water collecting device arranged outside the outer cylinder 5 through the third pipe 10, and is connected to the liquid inlet of the gas-liquid mixing pump 16 arranged outside the outer cylinder 5 through the fourth pipe 14, and is connected to the flotation zone 6 through the eighth pipe 18. The gas inlet of the gas-liquid mixing pump 16 is connected to the fifth pipe 15 for introducing ozone, and the outlet of the gas-liquid mixing pump 16 is connected to the interior of the inner cylinder 9 through the sixth pipe 17, and is connected to the scum collection chamber 3 through the seventh pipe 19. The scum collection chamber 3 is connected to the tail gas collection device arranged on the outer cylinder 5 through the ninth pipe 1.

[0026] When the integrated machine in this embodiment is running, before the raw water enters the flotation zone 6 through the second pipe 8, the nano generator acts on the raw water to generate countless micro-nano bubbles in the raw water. The raw water containing micro-nano bubbles enters the flotation zone 6 through the second pipe 8. In the flotation zone 6, the micro-nano bubbles are adsorbed on suspended matter and other substances, driving the suspended matter and other substances upward. The suspended matter and other substances follow the liquid from the upper end of the flotation zone 6 to first enter the scum collection chamber 3, and then flow into the scum collection device through the first pipe 4. Since the suspended matter and other substances in the raw water have floated in the flotation zone 6, the water at the lower end of the flotation zone 6 does not contain suspended matter and other substances, and enters the inner cylinder 9 through the eighth pipe 18. The liquid dissolved with ozone enters through the sixth pipe 17. The water body is decolorized and sterilized in the inner cylinder 9. Since the water in the inner cylinder 9 flows downward and the ozone flows upward in the water, the water at the lower end of the inner cylinder 9 is clean water treated with ozone. The clean water flows into the clean water collection device through the third pipe 10, enters the gas-liquid mixing pump 16 through the fourth pipe 14, and is mixed with ozone to form a liquid dissolved with ozone. The liquid dissolved with ozone also enters the scum collection chamber 3 through the seventh pipe 19, so that the liquid in the scum collection chamber 3 is constantly churned, ensuring that suspended matter and other substances are discharged from the first pipe 4 along the liquid. One end of the ninth pipe 1 connected to the scum collection chamber 3 is located at the upper end of the scum collection chamber 3, ensuring that ozone overflowing from the liquid can be discharged through the ninth pipe 1.

[0027] In order to better achieve the effect of the present invention, in the above embodiment, the upper end of the outer cylinder 5 is higher than the lower end of the scum collecting chamber 3, and one end of the first pipe 4 connected to the scum collecting chamber 3 is located at the lower end of the scum collecting chamber 3, which can take away the suspended matter and other substances in the scum collecting chamber 3 to the greatest extent. The upper end of the inner cylinder 9 is higher than the upper end of the outer cylinder 5 to prevent the liquid at the upper end of the outer cylinder 5 from flowing into the inner cylinder 9 and contaminating the liquid in the inner cylinder 9. During actual operation, it is necessary to ensure that the liquid level in the scum collecting chamber 3 is between the upper end of the outer cylinder 5 and the upper end of the inner cylinder 9. One end of the second pipe 8 connected to the air flotation zone 6 is located in the middle of the air flotation zone 6, which can ensure that the suspended matter and other substances are discharged along with the micro-nano bubbles, and ensure the air flotation. The liquid at the lower end of the zone 6 does not contain suspended matter and other substances as much as possible. The upper end of the scum collection chamber 3 is higher than the upper end of the inner cylinder 9. The end of the eighth pipe 18 connected to the inner cylinder 9 is located at the upper part of the inner cylinder 9, which can ensure that the water entering the inner cylinder 9 is downward, and the ozone is upward in the inner cylinder 9. In this way, the water entering the inner cylinder 9 can be well ozone-acted. The end of the eighth pipe 18 connected to the flotation zone 6 is located at the lower end of the flotation zone 6, which can ensure that the water entering the inner cylinder 9 is clean water at the lower end of the flotation zone 6. The end of the third pipe 10 connected to the inner cylinder 9 and the end of the fourth pipe 14 connected to the inner cylinder 9 are both arranged at the lower part of the inner cylinder 9, ensuring that the water going out from the third pipe 10 and the fourth pipe 14 is clean water.

[0028] In the above embodiment, the eighth pipeline 18 includes a first main pipe 1801, one end of the first main pipe 1801 is located at the upper part of the inner cylinder 9, and the other end is connected to the first branch pipe 1802. The first branch pipe 1802 is provided with a plurality of first branches 1802, and the ends of the plurality of first branches 1802 away from the first main pipe 1801 are evenly arranged at intervals at the lower end of the air flotation area 6, that is, arranged at intervals in a circle around the lower end of the inner cylinder 9, so that the water at the lower part of the air flotation area 6 enters the inner cylinder 9 evenly, which will not cause disturbance to the floating suspended matter and other substances, and It can ensure that the liquid entering the inner cylinder 9 does not contain suspended matter and other substances; the seventh pipeline 19 includes a second main pipe 1901 and a second branch pipe 1902, one end of the second main pipe 1901 is connected to the outlet of the gas-liquid mixing pump 16, and the other end passes through the sealing cover 2 and is respectively connected to one end of multiple second branch pipes 1902, and the ends of the multiple second branch pipes 1902 away from the second main pipe 1901 are evenly spaced and arranged on the periphery of the upper end of the outer cylinder 5, ensuring that the liquid in the scum collection chamber 3 is evenly turned over and does not cause local blockage of suspended matter and other substances.

[0029] In the above embodiments, a partition 12 is provided at the lower part of the inner cylinder 9, and one end of the sixth pipe 17 connected to the inner cylinder 9 is located at the upper end of the clean water collecting chamber 11. The partition 12 is sealed with the side wall of the inner cylinder 9 around one side, and the area surrounded by the partition 12, the side wall of the inner cylinder 9 and the lower wall of the inner cylinder 9 forms the clean water collecting chamber 11. Water inlet holes 1201 are arranged at intervals on the partition 12 to slow down the speed of water entering the clean water collecting chamber 11. On the one hand, it prevents the ozone that has not yet reacted with the water from being taken away, and on the other hand, the liquid level of the inner cylinder 9 will not drop too fast, thereby ensuring the pressure of the clean water in the clean water collecting chamber 11 flowing out from the third pipe 10 and the fourth pipe 14. One end of the third pipe 10 connected to the inner cylinder 9 and one end of the fourth pipe 14 connected to the inner cylinder 9 are both located in the clean water collecting chamber 11.

[0030] An ozone release chamber 13 is arranged at the upper end of the purified water collection chamber 11, and one end of the sixth pipe 17 connected to the inner cylinder 9 is located in the ozone release chamber 13, and there is a gap between the side wall of the ozone release chamber 13 and the side wall of the inner cylinder 9, and the water inlet 1201 is located between the inner cylinder 9 and the ozone release chamber 13, and air outlet holes 1301 are evenly spaced on the top plate of the ozone release chamber 13. Ozone bubbles entering the ozone release chamber 13 through the sixth pipe 17 collide in the ozone release chamber 13 and are evenly released from the air outlet holes 1301. On the one hand, the contact area between ozone and water is increased, the speed of ozone rising is slowed down, and the bactericidal effect of ozone is ensured. On the other hand, there is a certain distance between the air outlet hole 1301 and the water inlet hole 1201 of the ozone release chamber 13, which further prevents the ozone just released from being taken away before it reacts with water.

[0031] In the above embodiments, the height difference between the upper end of the outer cylinder 5 and the lower end of the scum collecting chamber 3, the height difference between the upper end of the inner cylinder 9 and the upper end of the outer cylinder 5, the height difference between the upper end of the scum collecting chamber 3 and the upper end of the inner cylinder 9, and the flow rate of each pipeline can be determined according to design requirements, wherein the upper end of the outer cylinder 5 is preferably 0.2 to 0.6 m higher than the lower end of the scum collecting chamber 3, the upper end of the inner cylinder 9 is preferably 0.3 to 0.5 m higher than the upper end of the outer cylinder 5, and the upper end of the scum collecting chamber 3 is preferably 0.3 to 0.5 m higher than the upper end of the inner cylinder 9.

[0032] In order to further improve the effect of the present invention, a filter layer may be provided at the upper end of the water inlet hole 1201 so that the water in the inner cylinder 9 is filtered by the filter layer before entering the clean water collection chamber 11 .

[0033] Applying the above embodiments to water treatment can significantly improve ozone utilization and reduce equipment cost and operating cost.

[0034] The specific embodiments of the present invention enable those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0035] It should be understood that the present invention is not limited to what has been described above and that various modifications and changes may be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A decolorizing and sterilizing all-in-one machine, characterized in that: include: An outer cylinder (5), an inner cylinder (9) is arranged inside the outer cylinder (5), a flotation zone (6) is formed in the space between the inner cylinder (9) and the outer cylinder (5), the upper end of the flotation zone (6) is connected to a scum collecting chamber (3), the scum collecting chamber (3) is arranged at the upper end of the outer cylinder (5), the lower end of the scum collecting chamber (3) is sleeved on the outer periphery of the mouth of the outer cylinder (5) and is sealed with the outer cylinder (5), the upper end of the scum collecting chamber (3) is covered with a sealing cover (2), the interior of the scum collecting chamber (3) is connected to a scum collecting device outside the outer cylinder (5) through a first pipe (4), the flotation zone (6) is connected to a raw water pool and a micro-nano tank through a second pipe (8), respectively. The inner cylinder (9) is connected to the bubble generator (7); the interior of the inner cylinder (9) is also connected to a clean water collecting device arranged outside the outer cylinder (5) through a third pipe (10); it is connected to a liquid inlet of a gas-liquid mixing pump (16) through a fourth pipe (14); it is connected to the gas flotation zone (6) through an eighth pipe (18); the gas inlet of the gas-liquid mixing pump (16) is connected to a fifth pipe (15) for feeding ozone; the outlet of the gas-liquid mixing pump (16) is connected to the interior of the inner cylinder (9) through a sixth pipe (17); it is connected to a scum collecting chamber (3) through a seventh pipe (19); and the scum collecting chamber (3) is connected to the tail gas collecting device through a ninth pipe (1).

2. The decolorizing and sterilizing integrated machine according to claim 1, characterized in that: The upper end of the outer cylinder (5) is higher than the lower end of the scum collecting chamber (3), the upper end of the inner cylinder (9) is higher than the upper end of the outer cylinder (5), and the upper end of the scum collecting chamber (3) is higher than the upper end of the inner cylinder (9).

3. The decolorizing and sterilizing integrated machine according to claim 1, characterized in that: One end of the first pipe (4) connected to the slag collection chamber (3) is located at the lower end of the slag collection chamber (3), one end of the second pipe (8) connected to the air flotation zone (6) is located in the middle of the air flotation zone (6), one end of the eighth pipe (18) connected to the inner cylinder (9) is located at the upper part of the inner cylinder (9), and one end connected to the air flotation zone (6) is located at the lower end of the air flotation zone (6).

4. The decolorizing and sterilizing integrated machine according to claim 1, characterized in that: A partition (12) is provided at the lower end of the inner cylinder (9), the partition (12) being sealedly connected to the side wall of the inner cylinder (9) around a periphery, and water inlet holes (1201) are provided at intervals on the partition (12); an area surrounded by the partition (12), the side wall of the inner cylinder (9) and the lower wall of the inner cylinder (9) forms a clean water collection chamber (11); one end of the third pipe (10) connected to the inner cylinder (9) and one end of the fourth pipe (14) connected to the inner cylinder (9) are both located in the clean water collection chamber (11); and one end of the sixth pipe (17) connected to the inner cylinder (9) is located at the upper end of the partition (12).

5. The decolorizing and sterilizing integrated machine according to claim 4, characterized in that: An ozone release chamber (13) is arranged at the upper end of the purified water collection chamber (11); one end of the sixth pipe (17) connected to the inner cylinder (9) is located in the ozone release chamber (13); a gap is provided between the side wall of the ozone release chamber (13) and the side wall of the inner cylinder (9); the water inlet (1201) is located between the inner cylinder (9) and the ozone release chamber (13); and air outlet holes (1301) are evenly spaced on the top plate of the ozone release chamber (13).

6. The decolorizing and sterilizing integrated machine according to claim 1, characterized in that: The eighth pipeline (18) comprises a first main pipe (1801), one end of which is located at the upper part of the inner cylinder (9), and the other end is connected to the first branch pipe (1802), and the end of the first branch pipe (1802) away from the first main pipe (1801) is located at the lower end of the flotation zone (6).

7. The decolorizing and sterilizing integrated machine according to claim 6, characterized in that: There are multiple first branch pipes (1802), and the ends of the multiple first branch pipes (1802) away from the first main pipe (1801) are evenly spaced and arranged at the lower end of the flotation zone (6).

8. The decolorizing and sterilizing integrated machine according to claim 1, characterized in that: The seventh pipeline (19) comprises a second main pipe (1901) and a second branch pipe (1902); one end of the second main pipe (1901) is connected to the outlet of the gas-liquid mixing pump (16); the other end passes through the sealing cover (2) and is respectively connected to a plurality of second branch pipes (1902); the ends of the plurality of second branch pipes (1902) away from the second main pipe (1901) are evenly spaced and arranged on the periphery of the upper end of the outer cylinder (5).

9. The decolorizing and sterilizing integrated machine according to claim 2, characterized in that: The upper end of the outer cylinder (5) is 0.2 to 0.6 m higher than the lower end of the slag collection chamber (3), the upper end of the inner cylinder (9) is 0.3 to 0.5 m higher than the upper end of the outer cylinder (5), and the upper end of the slag collection chamber (3) is 0.3 to 0.5 m higher than the upper end of the inner cylinder (9).

10. The decolorizing and sterilizing machine according to any one of claims 1 to 9 is applied to wastewater treatment in the papermaking industry.

Images