Sulfadiazine wastewater treatment system

Abstract

The utility model relates to a sulfadiazine wastewater treatment system which comprises a wastewater storage tank used for storing wastewater to be treated; the resin towers are communicated with the wastewater storage tank and are used for carrying out decoloration treatment on the wastewater and adsorbing sulfadiazine in the wastewater; the centrifugal pump is communicated with the resin tower through a three-way valve; the anaerobic tank is communicated with the centrifugal pump, and a stirrer is arranged in the anaerobic tank; the ozone reaction tank is communicated with the anaerobic tank, and an aeration structure is arranged in the ozone reaction tank; the ozone generation assembly is communicated with the aeration structure and is used for conveying generated ozone to the aeration structure; the flocculation tank is communicated with the ozone reaction tank; and the sedimentation tank is communicated with the flocculation tank. The sulfadiazine wastewater can be subjected to decoloration, adsorption, anaerobic treatment and ozone decomposition, and qualified discharge of the wastewater is realized.

Description

Technical Field

[0001] This utility model belongs to the field of water treatment systems, specifically relating to a sulfadiazine wastewater treatment system. Background Technology

[0002] Sulfadiazine is an organic compound with the molecular formula C. 10 H 10 N4O2S is a white or off-white crystal or powder, odorless and tasteless, gradually darkening upon exposure to light; it is almost insoluble in water, soluble in boiling water (1:60), slightly soluble in ethanol and acetone, insoluble in chloroform and ether, and readily soluble in dilute hydrochloric acid, sodium hydroxide solution or ammonia solution; melting point 252~256℃ (decomposes simultaneously).

[0003] Chinese invention patent application number 202010192914.8 discloses a green synthesis method for sulfadiazine, which includes the following steps: (a) adding 3-alkoxypropenal to a mixture of an organic alcohol solvent and sulfamethidine, mixing, and then refluxing to carry out a cyclization reaction; (b) after the cyclization reaction is completed, cooling the mixture to perform solid-liquid separation, the obtained solid being crude sulfadiazine, and the obtained liquid being recycled; (c) adding the crude sulfadiazine to liquid alkali, heating to carry out a salt formation reaction, followed by stirring and decolorization, and filtering to obtain the filtrate; (d) adding hydrochloric acid solution dropwise to the filtrate for acidification and crystallization, separating the crystals and drying them. The above synthesis method generates a certain amount of organic waste liquid, therefore wastewater treatment is required. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a sulfadiazine wastewater treatment system.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a sulfadiazine wastewater treatment system, comprising:

[0006] A wastewater storage tank, wherein the wastewater storage tank is used to store wastewater to be treated;

[0007] At least one set of resin towers, the resin towers being connected to the wastewater storage tank, for decolorizing the wastewater and adsorbing sulfadiazine in the wastewater;

[0008] A centrifugal pump, which is connected to the resin tower via a three-way valve;

[0009] An anaerobic tank, which is connected to the centrifugal pump, is equipped with a stirrer;

[0010] An ozone reaction tank, which is connected to the anaerobic tank, is equipped with an aeration structure.

[0011] An ozone generating component, which is connected to the aeration structure and is used to deliver the generated ozone to it;

[0012] A flocculation tank, which is connected to the ozone reaction tank;

[0013] A sedimentation tank, which is connected to the flocculation tank.

[0014] Ideally, the resin towers are in two groups, including a first resin tower connected to the wastewater storage tank via a first pipe and a second resin tower connected to the bottom of the first resin tower via a second pipe. The first resin tower contains decolorizing resin, and the second resin tower contains macroporous resin. The three-way valve is connected to the bottom of the second resin tower via a third pipe.

[0015] Optimally, the ozone generating assembly includes a gas storage tank, a freeze dryer connected to the gas storage tank, an oxygen-enriched dryer connected to the freeze dryer, an ozone generator connected to the oxygen-enriched dryer, and a buffer tank connected to the ozone generator. The buffer tank is also connected to the aeration structure.

[0016] Furthermore, the ozone generating assembly also includes a blower connected to the gas storage tank, a first filter connected to the gas storage tank, and a second filter connected to the oxygen-enriched dryer. The freeze dryer is connected to the first filter, and the ozone generator is connected to the second filter.

[0017] Ideally, an ozone exhaust gas destroyer is also installed on the top of the ozone reaction tank.

[0018] Ideally, the flocculation tank is equipped with multiple partitions that are spaced apart and staggered vertically.

[0019] Due to the application of the above technical solutions, this utility model has the following advantages compared with the prior art: The sulfadiazine wastewater treatment system of this utility model, by organically combining the wastewater storage tank, resin tower, centrifugal pump, anaerobic tank and other structures, can decolorize, adsorb, anaerobic treat and ozone decompose sulfadiazine wastewater, and finally achieve qualified discharge of wastewater. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the sulfadiazine wastewater treatment system of this utility model;

[0021] Figure 2 This is a process flow diagram of the sulfadiazine wastewater treatment system of this utility model. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0023] like Figure 1 The sulfadiazine wastewater treatment system shown mainly includes a wastewater storage tank 1, a resin tower, a centrifugal pump 5, an anaerobic tank 6, an ozone reaction tank 7, an ozone generating assembly, a flocculation tank 8, and a sedimentation tank 9, etc., and its process steps are as follows: Figure 2 As shown.

[0024] Wastewater storage tank 1 is used to store wastewater to be treated. There is at least one set of resin towers connected to wastewater storage tank 1, used for decolorizing the wastewater and adsorbing sulfadiazine from the wastewater. In this embodiment, there are two sets of resin towers: a first resin tower 2 connected to storage tank 1 via a first pipe (the connection point between the first pipe and wastewater storage tank 1 is usually located at the lower part, or even the bottom, of wastewater storage tank 1), and a second resin tower 3 connected to the bottom of the first resin tower 2 via a second pipe. The first resin tower 2 contains decolorizing resin 21 for decolorizing sulfadiazine from the wastewater; the second resin tower 3 contains macroporous resin 31 for adsorbing sulfadiazine from the wastewater, and the sulfadiazine adsorbed by the macroporous resin 31 is recovered and reused after post-treatment.

[0025] Centrifugal pump 5 is connected to resin tower via three-way valve 4. Specifically, three-way valve 4 is connected to the bottom of second resin tower 3 via a third pipe. The third pipe includes three branch pipes connected to the three ports of three-way valve 4: one branch pipe is connected to the bottom of second resin tower 3, another branch pipe is used to output recycled sulfadiazine, and the third branch pipe is used to connect to centrifugal pump 5.

[0026] Anaerobic tank 6 is connected to centrifugal pump 5 and is equipped with a stirrer 61 for anaerobic fermentation of the wastewater after sulfadiazine adsorption. At this time, the other end of the third branch pipe extends into anaerobic tank 6 to transport the wastewater after sulfadiazine adsorption into anaerobic tank 6. Ozone reactor 7 is connected to anaerobic tank 6 and is equipped with an aeration structure 72. The connection method here is usually conventional, as long as it allows for connection, such as using pipes (the same applies below). Furthermore, conventional valves can be installed on the pipes to control the flow of the pipes (all pipes in this application can be equipped with conventional valves as needed). The ozone generating component is connected to the aeration structure 72 to supply the generated ozone into ozone reactor 7, thereby utilizing ozone to oxidize the organic matter in the aforementioned wastewater. The flocculation tank 8 is connected to the ozone reaction tank 7. When flocculant is added to the flocculation tank 8, the wastewater will produce flocs. The sedimentation tank 9 is connected to the flocculation tank 8, allowing the wastewater to settle fully, forming supernatant and sludge. Finally, the wastewater and sludge can be manually drained and discharged. By organically combining the wastewater storage tank 1, resin tower, centrifugal pump 5, anaerobic tank 6, etc., sulfadiazine wastewater can be decolorized, adsorbed, anaerobic treated, and decomposed by ozone, ultimately achieving qualified discharge of the wastewater.

[0027] In this embodiment, the ozone generating assembly includes a gas storage tank 11 (which can be used to store air or oxygen), a freeze dryer 13 connected to the gas storage tank 11, an oxygen-enriching dryer 14 (i.e., an industrial oxygen generator) connected to the freeze dryer 13, an ozone generator 16 connected to the oxygen-enriching dryer 14, and a buffer tank 17 connected to the ozone generator 16. The buffer tank 17 is also connected to the aeration structure 72. All the equipment used here can be commercially available conventional equipment. Specifically, the ozone generating assembly also includes a blower 10 (for supplying air to the gas storage tank 11) connected to the gas storage tank 11, a first filter 12 connected to the gas storage tank 11, and a second filter 15 connected to the oxygen-enriched dryer 14. At this time, the freeze dryer 13 is also connected to the first filter 12, and the ozone generator 16 is connected to the second filter 15, so that the first filter 12 is connected between the gas storage tank 11 and the freeze dryer 13, and the second filter 15 is connected between the oxygen-enriched dryer 14 and the ozone generator 16, thereby ensuring the cleanliness of the corresponding gas and removing impurities.

[0028] In this embodiment, an ozone tail gas destroyer 71 is also installed at the top of the ozone reaction tank 7 to remove ozone and prevent it from polluting the air. Multiple baffles 81 are installed in the flocculation tank 8, spaced apart and staggered vertically, to ensure thorough flocculation within the flocculation tank 8 and improve the flocculation and sedimentation effect.

[0029] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A sulfadiazine wastewater treatment system, characterized in that, It includes: Wastewater storage tank (1), the wastewater storage tank (1) is used to store wastewater to be treated; At least one set of resin towers, which are connected to the wastewater storage tank (1), are used to decolorize the wastewater and adsorb sulfadiazine in the wastewater; Centrifugal pump (5), which is connected to the resin tower via a three-way valve (4); Anaerobic tank (6), which is connected to centrifugal pump (5) and is equipped with a stirrer (61). Ozone reaction tank (7), which is connected to the anaerobic tank (6), and is equipped with an aeration structure (72). An ozone generating component, which is connected to the aeration structure (72) and is used to deliver the generated ozone to it; Flocculation tank (8), which is connected to the ozone reaction tank (7); Sedimentation tank (9) is connected to flocculation tank (8).

2. The sulfadiazine wastewater treatment system according to claim 1, characterized in that: The resin tower consists of two sets, including a first resin tower (2) connected to the wastewater storage tank (1) via a first pipe and a second resin tower (3) connected to the bottom of the first resin tower (2) via a second pipe. The first resin tower (2) is filled with decolorizing resin (21), and the second resin tower (3) is filled with macroporous resin (31). The three-way valve (4) is connected to the bottom of the second resin tower (3) via a third pipe.

3. The sulfadiazine wastewater treatment system according to claim 1, characterized in that: The ozone generating assembly includes a gas storage tank (11), a freeze dryer (13) connected to the gas storage tank (11), an oxygen-enriched dryer (14) connected to the freeze dryer (13), an ozone generator (16) connected to the oxygen-enriched dryer (14), and a buffer tank (17) connected to the ozone generator (16). The buffer tank (17) is also connected to the aeration structure (72).

4. The sulfadiazine wastewater treatment system according to claim 3, characterized in that: The ozone generating assembly also includes a blower (10) connected to the gas storage tank (11), a first filter (12) connected to the gas storage tank (11), and a second filter (15) connected to the oxygen-enriched dryer (14). The freeze dryer (13) is connected to the first filter (12), and the ozone generator (16) is connected to the second filter (15).

5. The sulfadiazine wastewater treatment system according to claim 1, characterized in that: The ozone reaction tank (7) is also equipped with an ozone exhaust gas destroyer (71) on top.

6. The sulfadiazine wastewater treatment system according to claim 1, characterized in that: The flocculation tank (8) is equipped with multiple partitions (81) that are spaced apart and staggered vertically.

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