Novel hydrogen peroxide-ozone comprehensive oxidation tower

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to a novel hydrogen peroxide-ozone comprehensive oxidation tower which comprises a tower body manufactured by welding 304 stainless steel, a ground anchor, a hydrogen peroxide adding system, an ozone aeration system, a water distribution system for water to be treated, a backwashing gas distribution system, a water distribution plate, a water stop ring and a defoaming system. The device disclosed by the utility model has the beneficial effects that the structure is simple and reliable, hydroxyl radicals are generated through the catalytic action between hydrogen peroxide and ozone, organic matters are non-selectively degraded, the treatment effect is good, substances brought in in the oxidation process are reacted and decomposed into water and oxygen, new impurities needing post-treatment are not introduced, and the device is green and energy-saving.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and specifically relates to a novel hydrogen peroxide-ozone comprehensive oxidation tower. Background Art

[0002] Sewage refers to the polluted water discharged from life and production. It can be roughly divided into three types according to the source: domestic sewage, industrial wastewater, and agricultural wastewater. Among the water pollution caused by human production activities, industrial wastewater generated by industrial production is the most serious. Since industrial wastewater contains many pollutants and has complex components, it is not only difficult to purify, but also difficult to treat. At the same time, the pollutants contained in industrial wastewater vary greatly depending on the type of factory. Even for the same type of factory, the quality and quantity of pollutants contained are different due to different production processes. Therefore, industrial wastewater is not as stable as domestic sewage and is not easy to treat. For example, the most common industrial organic wastewater discharged by the papermaking, leather, food and other industries has the following main water quality characteristics: (1) high concentration of organic matter, containing a large amount of organic matter such as carbohydrates, fats, proteins, cellulose, etc.; (2) complex composition, containing toxic substances. The organic compounds in the wastewater are aromatic compounds and compounds with benzene rings, and also contain sulfides, chlorides, heavy metals and toxic organic matter; (3) high chroma and pungent odor; (4) often contains strong acids or strong bases, and unstable pH.

[0003] Generally speaking, direct discharge of industrial wastewater will cause more serious pollution. The high concentration and complex variety of pollutants make it more difficult to treat than domestic sewage. In addition, industrial wastewater is often highly toxic to microorganisms and is difficult to treat directly using general biochemical methods, resulting in higher treatment costs.

[0004] At present, the treatment of industrial wastewater mainly adopts the mode of "advanced oxidation technology + biochemical treatment + deep treatment". Advanced oxidation technology can be used to degrade pollutants in water without selection, directly oxidize pollutants in water into carbon dioxide and water, or oxidize and decompose macromolecules into small molecules, improve the biodegradability of sewage, and improve the effect of subsequent biochemical treatment. Among them, ozone oxidation technology, as an important component of traditional advanced oxidation technology, is widely used in sewage treatment. Ozone oxidation potential is high, but ozone oxidation is selective and often cannot directly achieve the purpose of completely removing organic matter and reducing TOC and COD, and the treatment efficiency is low.

[0005] In view of this, the purpose of the utility model is to provide a new type of hydrogen peroxide-ozone comprehensive oxidation tower with strong oxidation ability, small selectivity, fast reaction speed and high treatment efficiency. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a novel hydrogen peroxide-ozone comprehensive oxidation tower, which comprises a tower body made of 304 stainless steel welding, a ground anchor, an ozone aeration system, a hydrogen peroxide dosing system, a water distribution system for treated water, a backwashing air distribution system, a water distribution plate, a water stop ring and a defoaming system. A ground anchor is installed at the bottom of the tower body, and the ozone aeration system is installed at the bottom of the tower body through an aeration pipe support pipe. The microporous aerator of the ozone aeration system is connected to the ozone aeration system arranged on the tower body. The hydrogen peroxide dosing system is installed in the tower body above the ozone aeration system, and is connected to the outside world through the hydrogen peroxide dosing port; the water distribution system for treated water is installed in the tower body above the hydrogen peroxide dosing system, and the water inlet end of the water distribution system for treated water is connected to the treated water inlet arranged on the tower body; the backwash air distribution system is installed in the tower body above the water distribution system for treated water, and the backwash air inlet of the backwash air distribution system is connected to the outside world, and the backwash exhaust port of the backwash air distribution system is arranged at the top of the tower body and is connected to the backwash exhaust port of the backwash air distribution system. The backwash air distribution system is connected to the outside world; a backwash water distribution system is also installed in the tower body between the backwash air distribution system and the water distribution system for the water to be treated, and the backwash water inlet of the backwash water distribution system is arranged on the tower body and is connected to the outside world, and the backwash water outlet of the backwash water distribution system is arranged on the tower body and is connected to the outside world; a catalyst layer, a water stop ring, a catalyst supporting layer and a water distribution plate are installed in the tower body at the top of the backwash air distribution system from top to bottom, and the water distribution plate is supported by a support pipe installed at the bottom of the tower body; a water collecting weir is arranged in the upper part of the tower body The water collecting weir is connected with the outside through the water outlet arranged on the tower body; an OPR connecting pipe arranged in the vertical direction is also installed on one side of the tower body; the defoaming system is installed in the tower body above the water collecting weir, and the defoaming system is connected with the defoaming system inlet arranged on the tower body; an exhaust gas destruction port is also arranged on the top of the tower body; the upper end of the OPR connecting pipe extends to the outside of the tower body to form an ORP meter flange port, and the lower end extends to the water distribution plate, and an ORP detector is installed at the ORP meter flange port.

[0007] Preferably, a manhole is respectively provided at the bottom, middle, upper middle part and top of the tower body.

[0008] Preferably, lifting lugs and ladder rails are installed on the upper part of the tower body.

[0009] Preferably, a plurality of through holes of 3-5 mm are provided on the outlet pipe of the water distribution system for the water to be treated.

[0010] Preferably, a plurality of 10 mm through holes are provided on the air distribution pipe of the backwash air distribution system.

[0011] Preferably, a vent is provided at the bottom of the tower body.

[0012] Preferably, an inclined tube packing layer is provided in the tower body between the catalyst layer and the water collecting weir.

[0013] Preferably, a breathing valve interface connected to the ozone breathing valve is also provided on the top of the tower body.

[0014] The beneficial effects produced by the utility model are: simple and reliable structure, hydroxyl radicals are produced through the catalytic effect between hydrogen peroxide and ozone, organic matter is non-selectively degraded, the treatment effect is good, and the substances brought in during the oxidation process are decomposed into water and oxygen after reaction, and no new impurities that require post-treatment are introduced, which is green and energy-saving.

[0015] Considering that the filter bed is densely packed due to long-term operation of the catalyst, the reaction tower is air-washed and water-washed from time to time during operation to solve the problems of high labor intensity, high operating costs, unstable operating results, and high ozone consumption in the existing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the ozone catalytic oxidation tower of the present invention.

[0017] In the figure, 1, tower body, 2, anchor, 3, ozone aeration system, 3.1, aeration tube support tube, 3.2, microporous aerator, 3.3, ozone air inlet, 4, hydrogen peroxide dosing system, 4.1, hydrogen peroxide dosing port, 5, water distribution system for treated water, 5.1, treated water inlet, 6, backwash air distribution system, 6.1, backwash air inlet, 6.2, backwash exhaust port, 7, water distribution plate, 8, water stop ring, 9, defoaming system, 9.1, defoaming system inlet, 10, inclined tube packing layer, 11, backwash water distribution system, 11.1, backwash water inlet, 11.2, backwash water outlet, 12, catalyst layer, 13, catalyst support layer, 14, water collecting weir, 14.1, outlet, 15, OPR connection, 15.1. ORP meter flange port, 16. Exhaust gas destruction port, 17. Manhole, 18. Lifting lug, 19. Ladder fence, 20. Vent port, 21. Breathing valve interface. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1As shown, a novel hydrogen peroxide-ozone comprehensive oxidation tower provided by an embodiment of the utility model comprises a tower body (1) made of 304 stainless steel welding, a ground anchor (2), an ozone aeration system (3), a hydrogen peroxide dosing system (4), a water distribution system for treated water (5), a backwash air distribution system (6), a water distribution plate (7), a water stop ring (8) and a defoaming system (9), wherein a ground anchor (2) is installed at the bottom of the tower body (1), the ozone aeration system (3) is installed at the bottom of the tower body (1) through an aeration pipe support pipe (3.1), and the microporous aerator (3.2) of the ozone aeration system (3) is connected to an ozone air inlet (3.3) arranged on the tower body (1); the hydrogen peroxide dosing system (4) is connected to an ozone air inlet (3.3) arranged on the tower body (1); ) is installed in the tower body (1) at the top of the ozone aeration system (3) and is connected to the outside world through the hydrogen peroxide dosing port (4.1); the water distribution system (5) for treated water is installed in the tower body (1) at the top of the hydrogen peroxide dosing system (4), and the water inlet end (5) of the water distribution system for treated water is connected to the treated water inlet (5.1) arranged on the tower body (1); the backwash air distribution system (6) is installed in the tower body (1) at the top of the water distribution system (5) for treated water, and the backwash air inlet (6.1) of the backwash air distribution system (6) is connected to the outside world, and the backwash air outlet (6.2) of the backwash air distribution system (6) is arranged at the top of the tower body (1) and is connected to the outside world; the backwash air distribution system ( A backwash water distribution system (11) is also installed in the tower body (1) between the backwash water distribution system (6) and the to-be-treated water distribution system (5); a backwash water inlet (11.1) of the backwash water distribution system (11) is arranged on the tower body (1) and is communicated with the outside; a backwash water outlet (11.2) of the backwash water distribution system (11) is arranged on the tower body (1) and is communicated with the outside; a catalyst layer (12), a water stop ring (8), a catalyst support layer (13) and a water distribution plate (7) are installed in sequence from top to bottom in the tower body above the backwash gas distribution system (6); the water distribution plate (7) is supported by a support pipe installed at the bottom of the tower body (1); a water collecting weir (14) is arranged at the upper part of the tower body (1); The water weir (14) is connected to the outside through a water outlet (14.1) arranged on the tower body; an OPR connecting pipe (15) arranged in a vertical direction is also installed on one side of the tower body (1); the defoaming system (9) is installed in the tower body above the water collecting weir (14), and the defoaming system (9) is connected to a defoaming system inlet (9.1) arranged on the tower body (1); an exhaust gas destruction port (16) is also arranged on the top of the tower body (1); the upper end of the OPR connecting pipe (15) extends to the outside of the tower body to form an ORP meter flange port (15.1), and the lower end extends to the water distribution plate (7), and an ORP detector is installed at the ORP meter flange port (15.1).

[0020] Specifically, a manhole (17) is respectively provided at the bottom, middle, upper middle and top of the tower body.

[0021] Specifically, a lifting lug (18) and a ladder fence (19) are installed on the upper part of the tower body (1).

[0022] Specifically, a plurality of through holes with a diameter of 3-5 mm are arranged on the water outlet pipe of the water distribution system (5) for the water to be treated.

[0023] Specifically, a plurality of 10 mm through holes are provided on the air distribution pipe of the backwash air distribution system (6).

[0024] Specifically, a vent (20) is provided at the bottom of the tower body (1).

[0025] Specifically, an inclined tube packing layer (10) is provided in the tower body (1) between the catalyst layer (12) and the water collecting weir (14).

[0026] Specifically, a breathing valve interface (21) connected to an ozone breathing valve is also provided at the top of the tower body (1).

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel hydrogen peroxide-ozone comprehensive oxidation tower, characterized in that: The invention comprises a tower body (1) made of 304 stainless steel welding, a ground anchor (2), an ozone aeration system (3), a hydrogen peroxide dosing system (4), a water distribution system (5) for water to be treated, a backwash air distribution system (6), a water distribution plate (7), a water stop ring (8) and a defoaming system (9), wherein a ground anchor (2) is installed at the bottom of the tower body (1), the ozone aeration system (3) is installed at the bottom of the tower body (1) through an aeration pipe support pipe (3.1), and a microporous aerator (3.2) of the ozone aeration system (3) is connected to an ozone air inlet (3.3) arranged on the tower body (1); the hydrogen peroxide dosing system (4) is installed in the tower body (1) at the upper part of the ozone aeration system (3), The water distribution system (5) for the water to be treated is installed in the tower body (1) at the top of the hydrogen peroxide dosing system (4), and the water inlet end of the water distribution system (5) for the water to be treated is connected to the treated water inlet (5.1) arranged on the tower body (1); the backwash air distribution system (6) is installed in the tower body (1) at the top of the water distribution system (5) for the water to be treated, and the backwash air inlet (6.1) of the backwash air distribution system (6) is connected to the outside world, and the backwash air outlet (6.2) of the backwash air distribution system (6) is arranged at the top of the tower body (1) and is connected to the outside world; the backwash air distribution system (6) and the water distribution system (5) for the water to be treated are connected. A backwash water distribution system (11) is also installed in the tower body (1) between the backwash water distribution system (11), the backwash water inlet (11.1) of the backwash water distribution system (11) is arranged on the tower body (1) and is in communication with the outside, and the backwash water outlet (11.2) of the backwash water distribution system (11) is arranged on the tower body (1) and is in communication with the outside; a catalyst layer (12), a water stop ring (8), a catalyst support layer (13) and a water distribution plate (7) are installed in sequence from top to bottom in the tower body above the backwash air distribution system (6), and the water distribution plate (7) is supported by a support pipe installed at the bottom of the tower body (1); a water collecting weir (14) is arranged at the upper part of the tower body (1), and the water collecting weir (14) is connected to the tower body (1) by a water stop ring (8). A water outlet (14.1) arranged on the tower body is in communication with the outside; an OPR connecting pipe (15) arranged in a vertical direction is also installed on one side of the tower body (1); the defoaming system (9) is installed in the tower body above the water collecting weir (14), and the defoaming system (9) is in communication with a defoaming system inlet (9.1) arranged on the tower body (1); an exhaust gas destruction port (16) is also arranged on the top of the tower body (1); the upper end of the OPR connecting pipe (15) extends to the outside of the tower body to form an ORP meter flange port (15.1), and the lower end extends to the water distribution plate (7), and an ORP detector is installed at the ORP meter flange port (15.1).

2. A novel hydrogen peroxide-ozone comprehensive oxidation tower according to claim 1, characterized in that, A manhole (17) is respectively provided at the bottom, middle, upper middle and top of the tower body.

3. A novel hydrogen peroxide-ozone comprehensive oxidation tower according to claim 1, characterized in that, A lifting lug (18) and a ladder fence (19) are installed on the upper part of the tower body (1).

4. A novel hydrogen peroxide-ozone comprehensive oxidation tower according to claim 1, characterized in that, A plurality of through holes with a diameter of 3-5 mm are arranged on the water outlet pipe of the water distribution system (5) for the water to be treated.

5. A novel hydrogen peroxide-ozone comprehensive oxidation tower according to claim 1, characterized in that, A plurality of 10 mm through holes are provided on the air distribution pipe of the backwash air distribution system (6).

6. A novel hydrogen peroxide-ozone comprehensive oxidation tower according to claim 1, characterized in that: A vent (20) is provided at the bottom of the tower body (1).

7. A novel hydrogen peroxide-ozone comprehensive oxidation tower according to claim 1, characterized in that: An inclined tube packing layer (10) is arranged in the tower body (1) between the catalyst layer (12) and the water collecting weir (14).

8. A novel hydrogen peroxide-ozone comprehensive oxidation tower according to claim 1, characterized in that: A breathing valve interface (21) connected to an ozone breathing valve is also provided on the top of the tower body (1).

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