Printing and dyeing wastewater Fenton fluidized well reactor

Abstract

The utility model discloses a printing and dyeing wastewater Fenton fluidization well reactor, which relates to the field of water treatment, and adopts the technical scheme that the printing and dyeing wastewater Fenton fluidization well reactor comprises a suction well, a water inlet pipe and a water outlet pipe, a fence is arranged in the suction well, a fluidization well is formed in the suction well by the fence, the height of the fluidization well is lower than the depth of the suction well, and the outlet end of the water inlet pipe is positioned in the fluidization well; a ferrous pipe and a hydrogen peroxide pipe are arranged on the fence, the ferrous pipe and the hydrogen peroxide pipe are both communicated with the fluidization well, and a plurality of aeration openings capable of spraying air are formed in the bottom of the fluidization well. According to the utility model, the enclosure is arranged in the water absorption well, and the fluidization well is formed in the water absorption well by the enclosure, so that the wastewater does not need to be independently sent into the Fenton fluidization tank for reaction, the wastewater can directly react in the water absorption well, steps and links are saved, and the occupied space is smaller.

Description

Technical Field

[0001] The utility model relates to the field of water treatment, and more specifically, it relates to a Fenton fluidized well reactor for printing and dyeing wastewater. Background Technique

[0002] Printing and dyeing wastewater is one of the main pollution sources generated by the textile industry. The Fenton reaction utilizes the Fenton reagent, that is, hydrogen peroxide (H2O2) and ferrous ions (Fe2+), to generate highly oxidizing hydroxyl radicals (·OH) under acidic conditions. These hydroxyl radicals have extremely strong oxidation ability and can effectively degrade organic pollutants in water.

[0003] In the prior art, printing and dyeing wastewater needs to be discharged into the water absorption well after passing through the Fenton reaction tank. It is necessary to plan a site location for the Fenton reaction tank separately, which requires a larger floor space. The wastewater needs to be transported multiple times, increasing the pumping link.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Content of the Utility Model

[0005] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a Fenton fluidized well reactor for printing and dyeing wastewater, which can save steps and links and make the occupied space smaller.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: A Fenton fluidized well reactor for printing and dyeing wastewater includes a water absorption well, a water inlet pipe, and a water outlet pipe. A retaining wall is arranged inside the water absorption well. The retaining wall forms a fluidized well inside the water absorption well. The height of the fluidized well is lower than the depth of the water absorption well. The outlet end of the water inlet pipe is located inside the fluidized well. The retaining wall is provided with a ferrous pipe and a hydrogen peroxide pipe, and both the ferrous pipe and the hydrogen peroxide pipe communicate with the fluidized well. The bottom of the fluidized well is provided with a plurality of air outlets capable of spraying air.

[0007] The utility model is further arranged as: The outlet ends of the ferrous pipe and the hydrogen peroxide pipe inside the fluidized well are both located above the outlet end of the water inlet pipe.

[0008] The utility model is further arranged as: A slope is arranged above the retaining wall. The height of the side of the slope away from the fluidized well is lower than the height of the side of the slope facing the fluidized well.

[0009] The utility model is further arranged as: A walkway board is arranged at the upper edge of the water absorption well, and railings are arranged on both sides of the walkway board.

[0010] The utility model is further arranged as: A plurality of water drainage holes are opened on the walkway board.

[0011] The present utility model is further configured such that: the water outlet pipe is in an L shape, and the inlet end of the water outlet pipe is vertically downward.

[0012] In summary, the present utility model has the following beneficial effects:

[0013] In the present utility model, a retaining wall is provided in the water suction well. A fluidization well is formed inside the retaining wall in the water suction well. The ferrous pipe can input ferrous ions into the fluidization well, and the hydrogen peroxide pipe can input hydrogen peroxide into the fluidization well. A number of aeration ports capable of ejecting air are provided at the bottom of the fluidization well. During operation, the water inlet pipe continuously sends wastewater into the fluidization well. After the wastewater enters the fluidization well, a Fenton reaction will occur under the action of ferrous ions and hydrogen peroxide. As the wastewater continuously flows into the fluidization well, the water level in the fluidization well will rise and finally overflow the fluidization well and fall into the water suction well. After sufficient reaction, the water outlet pipe can discharge the wastewater that has undergone the Fenton reaction in the water suction well. It is not necessary to send the wastewater separately to a Fenton fluidization tank for reaction, and the reaction can be directly carried out in the water suction well, saving steps and links and making the occupied space smaller. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a partial cross-sectional view of the present utility model.

[0016] In the figure: 1, water suction well; 2, water inlet pipe; 3, water outlet pipe; 4, retaining wall; 5, fluidization well; 6, ferrous pipe; 7, hydrogen peroxide pipe; 8, aeration port; 9, inclined plane; 10, walkway board. Specific Embodiments

[0017] The following combines the drawings and embodiments to describe the present utility model in detail.

[0018] Embodiment: A Fenton fluidization well 5 reactor for printing and dyeing wastewater, as Figure 1As shown in the figure, it includes a water absorption well 1, a water inlet pipe 2, and a water outlet pipe 3. A retaining wall 4 is arranged in the water absorption well 1. The retaining wall 4 forms a fluidization well 5 inside the water absorption well 1. The height of the fluidization well 5 is lower than the depth of the water absorption well 1. The outlet end of the water inlet pipe 2 is located inside the fluidization well 5. The water inlet pipe 2 is used to discharge the wastewater that needs to be treated by the Fenton reaction into the fluidization well 5. A ferrous pipe 6 and a hydrogen peroxide pipe 7 are arranged on the retaining wall 4. Both the ferrous pipe 6 and the hydrogen peroxide pipe 7 communicate with the fluidization well 5. The ferrous pipe 6 can put ferrous ions (more specifically, the ferrous ions are provided by ferrous sulfate) into the fluidization well 5. The hydrogen peroxide pipe 7 can put hydrogen peroxide into the fluidization well 5. A number of aeration ports 8 capable of ejecting air are arranged at the bottom of the fluidization well 5. The aeration ports 8 are connected to an air compressor. During operation, the water inlet pipe 2 continuously sends wastewater into the fluidization well 5. After the wastewater enters the fluidization well 5, it will undergo a Fenton reaction under the action of ferrous ions and hydrogen peroxide. And the aeration ports 8 are located at the bottom of the fluidization well 5 and can eject air, which can increase the dissolved oxygen in the wastewater, enhance the effect of the Fenton reaction, promote the oxidation and degradation of organic pollutants, and at the same time prevent the precipitation of the reagent and wastewater in the fluidization well 5. As the wastewater continuously flows into the fluidization well 5, the water level in the fluidization well 5 will rise and finally overflow the fluidization well 5 and fall into the water absorption well 1. After sufficient reaction, the water outlet pipe 3 can discharge the wastewater after the Fenton reaction in the water absorption well 1. There is no need to send the wastewater to a separate Fenton fluidization tank for reaction, and the reaction can be directly carried out in the water absorption well 1, saving steps and links, making the occupied space smaller, and the entire fluidization well 5 can be used as a reaction vessel, and there is more sufficient time for the wastewater to react after entering the fluidization well 5, with better use effects.

[0019] As Figure 1 shown, the outlet ends of the ferrous pipe 6 and the hydrogen peroxide pipe 7 inside the fluidization well 5 are both above the outlet end of the water inlet pipe 2. Since the wastewater enters from below, the reagents above can immediately come into contact with the rising wastewater, thereby improving the mixing efficiency and also helping to prevent the precipitation of ferrous ions and hydrogen peroxide at the bottom of the fluidization well 5.

[0020] As Figure 2 shown, an inclined surface 9 is arranged above the retaining wall 4. The height of the inclined surface 9 on the side away from the fluidization well 5 is lower than the height of the inclined surface 9 on the side facing the fluidization well 5. The inclined surface 9 can effectively guide the wastewater to flow towards the water absorption well 1.

[0021] As Figure 2As shown, a walkway plate 10 is provided at the upper edge of the water absorption well 1, and railings are provided on both sides of the walkway plate 10. The walkway plate 10 and the railings on both sides of the walkway plate 10 provide a safe passage for operators, enabling them to conveniently inspect, operate, and maintain the Fenton fluidized well 5 reactor for printing and dyeing wastewater. A number of water drainage holes are provided on the walkway plate 10, which can effectively drain accumulated water, prevent water from accumulating on the walkway plate 10, keep the walkway plate 10 dry, and avoid operators walking on a slippery surface, thereby reducing the risk of slipping.

[0022] The outlet pipe 3 is L-shaped, and the inlet end of the outlet pipe 3 is vertically downward, which can better attract the treated sewage at the bottom of the water absorption well 1. For the downward inlet end, when the sediment needs to move upward to enter the outlet pipe 3, the sediment discharged along with the outlet pipe 3 can be reduced.

[0023] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A Fenton fluidized bed reactor for printing and dyeing wastewater, characterized in that: The invention comprises a water absorption well (1), a water inlet pipe (2), and a water outlet pipe (3). The water absorption well (1) is provided with a fence (4). The fence (4) forms a fluidizing well (5) inside the water absorption well (1). The height of the fluidizing well (5) is lower than the depth of the water absorption well (1). The outlet end of the water inlet pipe (2) is located in the fluidizing well (5). The fence (4) is provided with a ferrous pipe (6) and a hydrogen peroxide pipe (7). The ferrous pipe (6) and the hydrogen peroxide pipe (7) are both connected to the fluidizing well (5). The bottom of the fluidizing well (5) is provided with a plurality of aeration ports (8) capable of spraying air.

2. A Fenton fluidized bed reactor for printing and dyeing wastewater according to claim 1, characterized in that: The outlet ends of the ferrous pipe (6) and the hydrogen peroxide pipe (7) in the fluidized well (5) are both located above the outlet end of the water inlet pipe (2).

3. A Fenton fluidized bed reactor for printing and dyeing wastewater according to claim 1, characterized in that: An inclined surface (9) is arranged above the enclosure (4), and the height of the inclined surface (9) on the side away from the fluidizing well (5) is lower than the height of the inclined surface (9) on the side facing the fluidizing well (5).

4. A Fenton fluidized bed reactor for printing and dyeing wastewater according to claim 1, characterized in that: A walkway plate (10) is provided at the upper edge of the water absorption well (1), and railings are provided on both sides of the walkway plate (10).

5. A Fenton fluidized bed reactor for printing and dyeing wastewater according to claim 4, characterized in that: The walkway plate (10) is provided with a plurality of drainage holes.

6. A Fenton fluidized bed reactor for printing and dyeing wastewater according to claim 1, characterized in that: The water outlet pipe (3) is L-shaped, and the inlet end of the water outlet pipe (3) faces vertically downward.

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