Catalytic ozonation reaction tower and centralized water treatment direct drinking water system thereof

Abstract

An ozone catalytic oxidation reaction tower can realize gas-liquid intermittent contact and separation, and comprises a tower tank, a gas distribution disc, a gas-liquid separation layer, a liquid level meter, a spray header, an ozone generator and an ozone destructor, the centralized water treatment direct drinking water system containing the catalytic ozonation reaction tower further comprises a raw water inlet pipeline, a raw water tank, a booster pump, a sand filter, a carbon filter, an ion exchanger, a micron filter, a nano filter, a water supply pump set, a water return pipeline and a precision filter. According to the catalytic ozonation reaction tower disclosed by the utility model, water to be treated falls down layer by layer in a raining form through the spray heads and the densely-distributed drainage grooves in the gas-liquid separation layer, and ozone is dispersed in the tower tank through the densely-distributed exhaust holes and is gradually lifted, so that the ozone and the water to be treated are in large-range contact and long-time full contact; the pollutant degradation efficiency of ozone is greatly improved; according to the direct drinking water system applying the reaction tower, as the water treatment efficiency is improved, 'treatment and pumping 'are realized at the peak period of water consumption.

Description

Technical Field

[0001] This utility model relates to the field of water treatment, and in particular to an ozone reaction device. Background Technology

[0002] In the ozone oxidation process, a larger surface area and longer contact time between ozone and water are more conducive to ozone dissolution in water, further promoting the occurrence of the ozone catalytic oxidation reaction. Currently, ozone catalytic oxidation reaction tower technology lacks methods to improve the efficiency of ozone in degrading pollutants by ensuring sufficient and prolonged contact between ozone and the water to be treated.

[0003] Meanwhile, for centralized drinking water systems covering large areas such as campuses, public buildings, and residential areas, the low water treatment efficiency of existing ozone catalytic oxidation reactors necessitates the installation of two or more finished water tanks for peak water demand periods. There is a potential risk of contamination during the storage of water in these finished water tanks. Utility Model Content

[0004] To overcome the above-mentioned defects, the purpose of this utility model is to propose an ozone catalytic oxidation reaction tower, which can realize intermittent gas-liquid contact and separation, and includes: a tower tank, a gas distribution plate, a gas-liquid separation layer, a liquid level gauge, a spray head, an ozone generator, and an ozone destroyer.

[0005] The gas distribution plate is located at the bottom of the tower tank, the ozone generator is located outside the tower tank, and the ozone generator pipe is connected to the gas distribution plate;

[0006] Two or more of the aforementioned gas-liquid separation layers are evenly distributed in the middle of the tower tank;

[0007] The bottom of the gas-liquid separation layer is densely covered with horizontally arranged triangular prisms, and between two adjacent triangular prisms are spaced out a water drain chamber and a raised gas collection chamber.

[0008] The top of the gas collection chamber is provided with a top cover;

[0009] The top cover has a dense arrangement of vents;

[0010] The triangular prism is provided with densely packed longitudinal drainage grooves on both sides of the drainage chamber.

[0011] A cover is provided at the position where the triangular prisms are spaced apart and where the gas collection chamber is not located;

[0012] A catalyst is provided in the area enclosed by the upper part of the triangular prism and the outside of the gas collecting chamber, and the top of the catalyst is not higher than the top plate of the gas collecting chamber;

[0013] The catalyst is in the form of particles, with a particle size larger than the width of the drainage trough;

[0014] Due to the influence of water surface tension and viscosity, the water that gathers in the upper part of the gas-liquid separation layer falls down along the drainage channel, forming a series of falling water columns, which greatly increases the contact area between the water to be treated and ozone. At the same time, the ozone in the lower part gradually rises and is discharged upward along the gas collection chamber and exhaust port, realizing gas-liquid separation and allowing the ozone to diffuse in the tower tank. This also greatly increases the probability of ozone coming into contact with the water to be treated, maximizing the chance of ozone dissolving in the water and significantly improving the ozone reaction efficiency.

[0015] The level gauge is located in the water storage area at the bottom of the tower tank;

[0016] The spray head is located at the top of the tower tank;

[0017] The ozone destructor is located outside the tank, and a pipe at the top of the tank connects to the ozone destructor.

[0018] In the application of centralized water treatment equipment, this utility model proposes a centralized water treatment direct drinking water system including the ozone catalytic oxidation reaction tower. The centralized water treatment direct drinking water system also includes a raw water inlet pipe, a raw water tank, a booster pump, a sand filter, a carbon filter, an ion exchanger, a micron filter, a nano filter, a water supply pump set, a return water pipe, and a precision filter.

[0019] The raw water tank has a raw water inlet pipe at the inlet, a raw water outlet pipe at the outlet, and a sewage pipe at the bottom.

[0020] The raw water inlet pipe is connected to the two raw water inlet pipes and connected to the water end;

[0021] The outlet ends of the two raw water outlet pipes are connected to the outlet ends of the two booster pumps and connected to the water inlet.

[0022] The booster pump, the sand filter, the carbon filter, the ion exchanger, the micron filter, the booster pump, and the nanofiltration unit are connected in sequence by pipelines.

[0023] The nanofiltration outlet pipe is equipped with a flow meter and a check valve in sequence.

[0024] The parallel outlets of the two nanofiltration units are connected to the inlet pipe of the spray head;

[0025] The water outlet of the ozone catalytic oxidation reaction tower is connected to the water supply pump set;

[0026] The return water pipe is connected to the precision filter;

[0027] The precision filter's outlet pipe is equipped with an electric valve;

[0028] Two or more precision filters are connected to the water outlet pipe and then connected to the water inlet pipe of the spray head. The two or more precision filters connected to the water outlet pipe are equipped with the check valve.

[0029] The flow meter is installed at the water inlet pipe of the spray head.

[0030] Considering the need to supply drinking water to large areas (such as schools, multi-building apartments and office areas), centralized treatment facilitates equipment operation, management and maintenance. This utility model sets up two pre-filtration units. During peak water usage periods, both units operate simultaneously, while only one unit is turned on during off-peak periods. The final ozone treatment stage uses an ozone catalytic oxidation reaction tower with intermittent gas-liquid contact and separation, which meets the water treatment volume during peak water usage periods. This ensures that the water treatment volume is synchronized with the usage demand, avoiding the risk of re-contamination caused by storing finished water in the finished water tank for too long.

[0031] The advantages and positive effects of this invention are as follows: the ozone catalytic oxidation reaction tower with intermittent gas-liquid contact and separation allows the water to be treated to fall layer by layer in the form of rain through the spray heads and the densely distributed drainage channels in the gas-liquid separation layer, while ozone is dispersed in the tower tank through the densely distributed exhaust holes, gradually rising and being evenly distributed. This achieves large-scale and long-term full contact between ozone and the water to be treated, greatly improving the efficiency of ozone in degrading pollutants. At the same time, the direct drinking water system using this reaction tower can carry out high-flow-rate water purification during peak water consumption periods due to the significantly improved water treatment efficiency, achieving "treatment and pumping on demand", avoiding the potential water pollution risk during the storage of finished water in the finished water tank. Attached Figure Description

[0032] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0033] Figure 1 This is a schematic diagram of a centralized water treatment system for direct drinking water that includes an ozone catalytic oxidation reaction tower with intermittent gas-liquid contact and separation according to the present invention.

[0034] Figure 2 This is a schematic diagram of the ozone catalytic oxidation reaction tower with intermittent gas-liquid contact and separation according to this utility model;

[0035] Figure 3 for Figure 2 Schematic diagram of the cross-section of the gas-liquid separation layer;

[0036] Figure 4 for Figure 2 A three-dimensional schematic diagram of the gas-liquid separation layer;

[0037] Figure 5 for Figure 4 A three-dimensional schematic diagram of a central triangular prism;

[0038] In the diagram, the components are: raw water inlet pipe-1, raw water tank-2, raw water inlet pipe-21, sewage pipe-22, raw water outlet pipe-23, sand filter-3, carbon filter-4, ion exchanger-5, micron filter-6, nano filter-7, ozone catalytic oxidation reaction tower-8, tower tank-81, gas distribution plate-82, gas-liquid separation layer-83, triangular prism-831, drain chamber-832, plate cover-8321, drainage trough-8322, gas collection chamber-834, top cover-8341, vent-8342, level gauge-84, spray head-85, ozone generator-86, ozone destroyer-87, water supply pump set-9, return water pipe-10, precision filter-11, electric valve-111, booster pump-a, check valve-b, and flow meter-c. Detailed Implementation

[0039] The present invention will now be described in more detail with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. It should be understood that those skilled in the art can modify the invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the invention.

[0040] like Figure 1-5 As shown, Example 1:

[0041] An ozone catalytic oxidation reaction tower, the ozone catalytic oxidation reaction tower 8 can realize intermittent gas-liquid contact and separation, and includes: tower tank 81, gas distribution plate 82, gas-liquid separation layer 83, liquid level gauge 84, spray head 85, ozone generator 86, and ozone destroyer 87.

[0042] The gas distribution plate 82 is located at the bottom of the tower tank 81, and the ozone generator 86 is located on the outside of the tower tank 81. The ozone generator 86 is connected to the gas distribution plate 82 by a pipe.

[0043] Two or more gas-liquid separation layers 83 are evenly distributed in the middle of the tower tank 81;

[0044] The bottom of the gas-liquid separation layer 83 is densely covered with horizontally arranged triangular prisms 831, and between two adjacent triangular prisms 831, there are water drain chambers 832 and protruding gas collection chambers 834.

[0045] The top of the gas collecting chamber 834 is provided with a top cover 8341;

[0046] The top cover 8341 has vent holes 8342 arranged closely together;

[0047] The triangular prism 831 is located on both sides of the drainage chamber 832 and is provided with a dense array of longitudinal drainage grooves 8322;

[0048] A cover 8321 is provided at the position where there is no gas collection chamber 834 between the triangular prisms 831;

[0049] A catalyst 833 is provided in the enclosed area between the upper part of the triangular prism 831 and the outside of the gas collecting chamber 834, and the top of the catalyst is not higher than the top plate of the gas collecting chamber 834.

[0050] Catalyst 833 is granular, with a particle size larger than the width of drainage trough 8322;

[0051] Level gauge 84 is located in the water storage area at the bottom of tower tank 81;

[0052] Spray head 85 is located on the upper part of tower tank 81;

[0053] Ozone destroyer 87 is located outside of tank 81, and the top of the tank is connected to the ozone destroyer via a pipe.

[0054] Furthermore, a centralized water treatment system for direct drinking water, including an ozone catalytic oxidation reaction tower, further includes a raw water inlet pipe 1, a raw water tank 2, a booster pump a, a sand filter 3, a carbon filter 4, an ion exchanger 5, a micron filter 6, a nano filter 7, a water supply pump set 9, a return water pipe 10, and a precision filter 11.

[0055] The raw water tank 2 has a raw water inlet pipe 21 at the inlet and a raw water outlet pipe 23 at the outlet. The bottom is equipped with a sewage pipe 22.

[0056] The raw water inlet pipe 1 is connected to two raw water inlet pipes 21 and connected to the water end;

[0057] Two raw water outlet pipes 23 are connected to the outlet ends of two booster pumps a and connected to the water outlet ends;

[0058] Booster pump a, sand filter 3, carbon filter 4, ion exchanger 5, micron filter 6, booster pump a, and nanofilter 7 are connected in sequence by pipelines;

[0059] The outlet pipe of nanofiltration unit 7 is equipped with a flow meter c and a check valve b in sequence;

[0060] The parallel outlets of the two nanofiltration units 7 are connected to the inlet pipe of the spray head 85;

[0061] The outlet of ozone catalytic oxidation reaction tower 8 is connected to water supply pump set 9;

[0062] Return water pipe 10 is connected to precision filter 11;

[0063] The outlet pipe of the precision filter 11 is equipped with an electric valve 111;

[0064] Two or more precision filters 11 are connected to the water outlet pipe and then connected to the water inlet pipe of the spray head 85. The two or more precision filters 11 connected to the water outlet pipe are equipped with a check valve b.

[0065] A flow meter c is installed at the water inlet pipe of the 85 spray head.

[0066] The present invention has been described in detail above through embodiments, but the content is only a preferred embodiment of the present invention and should not be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made in accordance with the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. An ozone catalytic oxidation reaction tower characterized by, The ozone catalytic oxidation reaction tower (8) can realize intermittent contact and separation between gas and liquid, and comprises a tower tank (81), a gas distribution plate (82), a gas-liquid separation layer (83), a liquid level meter (84), a spray head (85), an ozone generator (86), and an ozone destroyer (87); The gas distribution plate (82) is located at the bottom of the tower tank (81), and the ozone generator (86) is located outside the tower tank (81) and is connected to the gas distribution plate (82) through a pipeline; Two or more gas-liquid separation layers (83) are uniformly distributed in the middle of the tower tank (81); The bottom of the gas-liquid separation layer (83) is densely covered with horizontal rows of triangular prisms (831), and two adjacent triangular prisms (831) are separated by a drainage cavity (832) and a raised gas collection cavity (834); The top of the gas collection cavity (834) is provided with a top cover (8341); The top cover (8341) is closely arranged with exhaust holes (8342); The triangular prisms (831) located on both sides of the drainage cavity (832) are provided with densely arranged longitudinal drainage grooves (8322); The triangular prisms (831) are separated and provided with a plate cover (8321) at positions not provided with the gas collection cavity (834); The upper part of the triangular prism (831) and the surrounding area outside the gas collection cavity (834) are provided with a catalyst (833), and the top of the catalyst is not higher than the top plate of the gas collection cavity (834); The catalyst (833) is in the form of particles, and the particle size is greater than the width of the drainage groove (8322); The liquid level meter (84) is located in the water storage area at the lower part of the tower tank (81); The spray head (85) is located at the upper part of the tower tank (81); The ozone destroyer (87) is located outside the tower tank (81), and the top of the tower tank is connected to the ozone destroyer through a pipeline.

2. A centralized water treatment direct drinking water system comprising the ozone catalytic oxidation reaction tower of claim 1, characterized in that, The centralized water treatment direct drinking water system further comprises a raw water inlet pipeline (1), a raw water tank (2), a booster pump (a), a sand filter (3), a carbon filter (4), an ion exchanger (5), a micron filter (6), a nanofilter (7), a water supply pump group (9), a backwater pipeline (10), and a precision filter (11); The raw water tank (2) is provided with a raw water inlet pipeline (21) at the water inlet, a raw water outlet pipeline (23) at the water outlet, and a sewage pipeline (22) at the lower part; The raw water inlet pipeline (1) is connected to two raw water inlet pipelines (21) and is connected to the water inlet end; The water outlet ends of two raw water outlet pipelines (23) are connected to the water inlet ends of two booster pumps (a); The booster pump (a), the sand filter (3), the carbon filter (4), the ion exchanger (5), the micron filter (6), the booster pump (a), and the nanofilter (7) are connected in sequence through pipelines; The water outlet pipeline of the nanofilter (7) is provided with a flow meter (c) and a check valve (b) in sequence; The water outlet ends of two nanofilters (7) are connected to the water inlet pipeline of the spray head (85); The water outlet end of the ozone catalytic oxidation reaction tower (8) is connected to the water supply pump group (9); The backwater pipeline (10) is connected to the precision filter (11). The water outlet pipeline of the precision filter (11) is provided with an electric valve (111); Two or more water outlet pipelines of the precision filter (11) are connected to the water inlet pipeline of the spray head (85), and the two or more water outlet pipelines of the precision filter (11) are provided with the check valve (b); The water inlet pipeline of the spray head (85) is provided with the flow meter (c).

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