CN222574371U - Pesticide wastewater pretreatment device - Google Patents
Pesticide wastewater pretreatment device Download PDFInfo
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- CN222574371U CN222574371U CN202420665679.5U CN202420665679U CN222574371U CN 222574371 U CN222574371 U CN 222574371U CN 202420665679 U CN202420665679 U CN 202420665679U CN 222574371 U CN222574371 U CN 222574371U
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Abstract
本实用新型公开了一种农药废水预处理装置，包括原水储罐、换热器、蒸发器和高级氧化反应器，原水通过原水储罐的输入口存储在原水储罐中，原水储罐连接换热器，并通过换热器连接蒸发器，蒸发器的上端为蒸汽口，由蒸汽口重新连接换热器，并通过换热器连接高级氧化反应器，换热器通过冷却水管外接冷水。本实用新型装置针对性的对农药废水进行预处理，通过将原水储罐中的农药废水升温，并在蒸发器中进行蒸发后得到盐泥，从而将废水中的盐进行过滤，以降低农药废水的盐分，降低有害物质的毒性，提高后续生物处理运行稳定性，最终促成农药废水处理达标。同时，利用换热器增加能量的利用效率和装置的工作效率。
The utility model discloses a pesticide wastewater pretreatment device, including a raw water storage tank, a heat exchanger, an evaporator and an advanced oxidation reactor. Raw water is stored in the raw water storage tank through the input port of the raw water storage tank. The raw water storage tank is connected to the heat exchanger, and is connected to the evaporator through the heat exchanger. The upper end of the evaporator is a steam port, which is reconnected to the heat exchanger through the steam port, and is connected to the advanced oxidation reactor through the heat exchanger. The heat exchanger is connected to cold water through a cooling water pipe. The utility model device pretreats the pesticide wastewater in a targeted manner, by heating the pesticide wastewater in the raw water storage tank and evaporating it in the evaporator to obtain salt mud, thereby filtering the salt in the wastewater to reduce the salt content of the pesticide wastewater, reduce the toxicity of harmful substances, improve the stability of subsequent biological treatment operation, and finally promote the pesticide wastewater treatment to meet the standards. At the same time, the heat exchanger is used to increase the energy utilization efficiency and the working efficiency of the device.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment, in particular to a pesticide wastewater pretreatment device.
Background
The global grain crisis is not completely eliminated due to limited cultivated land and the extreme climate of frequent occurrence of each land. Although the grain yield of China is increased year by year, the increasing import quantity of agricultural products in China shows that the agricultural products in China have higher and higher external dependence. As an agricultural chemical which is an important guarantee for agricultural product production, it has become an important material for the national life. The pesticide can produce a large amount of sewage in the production process, and the pretreatment such as high concentration of pollutant organic matters, high concentration of ammonia nitrogen and total nitrogen, high salinity and strong biotoxicity, single physical separation, chemical oxidation and the like can not ensure the stable operation of the subsequent biological treatment process, and the effectiveness of wastewater treatment can not be ensured.
Therefore, there is a need for a pesticide wastewater pretreatment device to solve the problem of poor pretreatment effect of pesticide wastewater.
Disclosure of utility model
Aiming at the defects in the prior art, the utility model provides a pesticide wastewater pretreatment device to solve the problem of poor pretreatment effect of pesticide wastewater.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The pesticide wastewater pretreatment device is characterized by comprising a raw water storage tank, a heat exchanger, an evaporator and a high-grade oxidation reactor, wherein the raw water storage tank is used for storing raw water, the raw water storage tank is connected with the heat exchanger and is connected with the evaporator through the heat exchanger, the evaporator is provided with a steam port, the steam port is reconnected with the heat exchanger, the evaporator is connected with the high-grade oxidation reactor through the heat exchanger, the evaporator is also provided with a salt discharging port, and the heat exchanger is externally connected with cold water through a cooling water pipe.
In order to optimize the technical scheme, the specific measures adopted further comprise:
Further, a salt discharging port of the evaporator is connected with a solid-liquid separator, the solid-liquid separator is connected with an input port of the raw water storage tank, and the solid-liquid separator is used for collecting salt mud discharged by the evaporator for solid-liquid separation and discharging filtrate obtained by separation into the raw water storage tank again.
Further, a salt discharging valve is arranged between the evaporator and the solid-liquid separator.
Further, the lower end of the evaporator is provided with a downward conical necking, the salt discharging port is arranged at the conical necking, and the steam port is arranged at the upper end of the evaporator.
Further, a coil heater is arranged on the side wall of the evaporator, and a stirrer is arranged in the evaporator.
The evaporator is connected with the heat exchanger through the steam port and then connected with the circulating pipeline through the heat exchanger, and the circulating pipeline is connected with the heat exchanger and then connected with the input end of the advanced oxidation reactor through the heat exchanger.
Further, a cooling circulating pump for mixing water flowing out from a circulating port of the advanced oxidation reactor with water condensed by steam from the heat exchanger and inputting the water into the heat exchanger is arranged on the circulating pipeline.
Further, the device also comprises a medicament storage tank, wherein the pipeline, which is connected with the input end of the advanced oxidation reactor, of the heat exchanger is connected with the medicament storage tank, and the medicament storage tank is provided with a medicament feeding pump for feeding medicaments into the advanced oxidation reactor.
Further, the advanced oxidation reactor is divided into a flow channel formed by communicating a plurality of S-shaped channels through a plurality of partition boards, and an ultraviolet light source is arranged between every two partition boards.
Further, a first thermometer is arranged in the evaporator, and a second thermometer is arranged in the advanced oxidation reactor.
The beneficial effects of the utility model are as follows:
According to the device, pesticide wastewater is subjected to targeted pretreatment, the temperature of the pesticide wastewater in the raw water storage tank is raised, and salt mud is obtained after evaporation in the evaporator, so that salt in the wastewater is filtered, the salt content of the pesticide wastewater is reduced, the toxicity of harmful substances is reduced, the stability of subsequent treatment operation is improved, and finally the pesticide wastewater treatment reaches the standard. Meanwhile, the raw water output from the raw water storage tank is initially heated in the heat exchanger by utilizing the steam discharged from the steam port of the evaporator, so that the energy utilization efficiency and the working efficiency of the device are improved, cold water is provided by the cooling water pipe, the steam is further condensed, and condensed liquid after condensation flows into the advanced oxidation reactor for further oxidation.
The device can be provided with a fully-closed container which can work at normal pressure to reduce secondary pollution, can be provided with an integrated skid-mounted form, is convenient to install and transport, can realize full-automatic operation, is simple and convenient to operate, fully considers and utilizes the surplus heat of the device, saves energy consumption, and can enable characteristic pollutants to be separated and oxidized more thoroughly.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a pesticide wastewater pretreatment device according to the present utility model;
Fig. 2 is a schematic installation diagram of a first thermometer and a second thermometer of the pesticide wastewater pretreatment device according to the present utility model.
The device comprises a raw water storage tank 1, a heat exchanger 2, an evaporator 3, an advanced oxidation reactor 4, a medicament storage tank 5, a raw water lifting pump 6, a stirrer 7, a coil heater 8, a first thermometer 9, a salt discharging valve 10, a cooling water pipe 11, a medicament adding pump 12, a second thermometer 13, an ultraviolet light source 14, a cooling circulating pump 15 and a solid-liquid separator 16.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the pesticide wastewater pretreatment device in the embodiment of the utility model comprises a raw water storage tank 1, a heat exchanger 2, an evaporator 3 and a high-grade oxidation reactor 4, wherein pesticide wastewater is stored in the raw water storage tank 1 as raw water through an input port of the raw water storage tank 1, the raw water storage tank 1 is connected with the heat exchanger 2 and is connected with the evaporator 3 through the heat exchanger 2, the heat exchanger 2 is used for heating raw water discharged from the raw water storage tank 1, the upper end of the evaporator 3 is a steam port, the steam port is reconnected with the heat exchanger 2 and is connected with the high-grade oxidation reactor 4 through the heat exchanger 2, a salt discharge port is arranged at the lower end of the evaporator 3, the heat exchanger 2 is externally connected with cold water through a cooling water pipe 11 and is discharged from a discharge port of the heat exchanger 2 after the temperature is increased through the heat exchanger 2 for cooling use of the heat exchanger 2.
In this embodiment, the raw water storage tank 1 may be made of PE, the raw water lifting pump 6 may be disposed between the raw water storage tank 1 and the heat exchanger 2, the material of the overflow portion of the raw water lifting pump 6 may be fluoroplastic, the cooling water pipe 11 may be provided with a valve, the valve may be an electric ball valve, and the advanced oxidation reactor 4 may be a rectangular baffled reactor, and the material of the advanced oxidation reactor is SUS316. In this embodiment, the connection between the components may be a pipe connection.
According to the utility model, the pesticide wastewater is subjected to targeted pretreatment, the temperature of the pesticide wastewater in the raw water storage tank 1 is raised through the heat exchanger 2, the salt slurry is obtained after evaporation in the evaporator 3, and the salt slurry can be discharged through the salt discharging port, so that the salt in the wastewater is filtered, the salt content of the pesticide wastewater is reduced, the toxicity of harmful substances is reduced, the running stability of subsequent biological treatment is improved, and finally the pesticide wastewater treatment reaches the standard. At the same time, the raw water output from the raw water storage tank 1 is primarily heated in the heat exchanger 2 by the steam discharged from the steam port of the evaporator 3 to increase the energy utilization efficiency and the working efficiency of the apparatus, and cold water is supplied from the cooling water pipe 11 to further condense the steam so that condensed liquid after condensation flows into the advanced oxidation reactor 4.
In another embodiment, a salt discharging port at the lower end of the evaporator 3 is connected with a solid-liquid separator 16, the solid-liquid separator 16 is connected with an input port of the raw water storage tank 1, and the solid-liquid separator 16 is used for collecting salt mud discharged by the evaporator 3 for solid-liquid separation and discharging filtrate obtained by separation into the raw water storage tank 1 again. Therefore, the salt mud can be further separated into mud slag for dangerous waste disposal, and the filtrate is recycled to the raw water storage tank 1 for cyclic treatment, so that the treatment effect is ensured. In the present embodiment, the solid-liquid separator 16 is a vertical drum type centrifuge, and is made of SUS316.
Wherein, a salt discharging valve 10 is arranged on a pipeline connected between the evaporator 3 and the solid-liquid separator 16. In this way, the brine sludge in the evaporator 3 can be discharged out through the brine discharge valve 10 on a regular basis as required.
Wherein, the lower end of the evaporator 3 is connected with a solid-liquid separator 16, and the lower end of the evaporator 3 is in a downward conical necking shape. Specifically, the upper part of the evaporator 3 is cylindrical, the lower part is cone-shaped, and the material is titanium. Therefore, the cone-shaped lower part structure is more convenient for discharging the salt slurry.
In another embodiment, a coil heater 8 is arranged on the side wall of the evaporator 3 to ensure the evaporation effect of the evaporator 3, and a stirrer 7 is arranged at the upper end of the evaporator 3, wherein the stirrer 7 is used for stirring the waste liquid in the evaporator 3 so as to further increase the evaporation efficiency of the waste liquid. In this embodiment, the stirrer 7 is a vertical paddle stirrer, and the stirrer shaft and the blades are made of titanium.
The evaporator 3 is reconnected to the heat exchanger 2 from the steam port and is connected to the advanced oxidation reactor 4 through the heat exchanger 2, and various embodiments are possible.
In a specific embodiment, the vapor obtained by the evaporator 3 may be directly oxidized after condensation. That is, the steam port of the evaporator 3 is connected to the heat exchanger 2, and is directly connected to the advanced oxidation reactor 4 through the heat exchanger 2. At this time, the steam is cooled down to condensed water by the heat exchanger 2, and the condensed water directly flows into the advanced oxidation reactor 4 to perform oxidation reaction.
In another embodiment, the steam obtained from the evaporator 3 may be mixed with a part of the oxidized water body before being oxidized after being condensed. The output end of the advanced oxidation reactor 4 is provided with a water outlet and a circulating port, the water outlet is used for normally discharging the treated water body, the circulating port is connected with a circulating pipeline, meanwhile, the evaporator 3 is connected with the heat exchanger 2 through a steam port and then is connected with the circulating pipeline through the heat exchanger 2, and the circulating pipeline is connected with the input end of the advanced oxidation reactor 4 through the heat exchanger 2. In this embodiment, the condensed water condensed by the evaporator 3 entering the heat exchanger 2 through the steam port is premixed with a part of water body with oxidant from the advanced oxidation reactor 4, and then enters the heat exchanger 2 for further cooling, and then uniformly flows into the advanced oxidation reactor 4, so that the treatment effect on the wastewater is further ensured through premixing the condensed water and the water body with oxidant, and the cooling effect is improved through circulating cooling. In this embodiment, the heat exchanger 2 adopts four medium channel coil type cold-heat exchangers, and the material is titanium. Wherein, be equipped with on the circulation line and be used for will flowing out the water from the high-order oxidation reactor 4 circulation mouth and the water mixture input heat exchanger 2 after the steam is condensed from heat exchanger 2 cooling circulation pump 15, the excessive flow part material of cooling circulation pump 15 is fluoroplastics. In this way, the mixed water body of the condensed water and a part of the oxidation water can be effectively guided by the cooling circulation pump 15, so that the working efficiency of the device is ensured.
The device further comprises a medicament storage tank 5, wherein a medicament storage tank 5 is connected to a pipeline connected with the input end of the advanced oxidation reactor 4 through the heat exchanger 2, and the medicament storage tank 5 is provided with a medicament feeding pump 12 for feeding medicaments into the advanced oxidation reactor 4. Therefore, the medicament storage tank 5 can be added into the mixed water body through the medicament adding pump 12, so that the wastewater can be further purified. In this embodiment, the material of the medicine storage tank 5 is PE, the medicine adding pump 12 is a diaphragm metering pump, the material of the overcurrent part is PVC, the oxidant in the medicine storage tank 5 is hydrogen peroxide, and the concentration is 30%.
In another embodiment, the advanced oxidation reactor 4 is divided into a flow channel formed by communicating a plurality of S-shaped channels through a plurality of partition boards, and an ultraviolet light source 14 is arranged between every two partition boards, so that the treatment effect of the wastewater can be ensured. In this embodiment, the advanced oxidation reactor 4 is internally provided with a quartz sleeve and an ultraviolet light source 14, the quartz sleeve is used for being sleeved on the ultraviolet light source 14, the ultraviolet light source 14 is used for providing medium-pressure ultraviolet light, and the quartz sleeve can be detachably cleaned.
When the device is used, pesticide wastewater enters a raw water storage tank 1 to be collected, the pesticide wastewater is lifted by a raw water lifting pump 6 to enter a heat exchanger 2 and enters an evaporator 3 after being primarily heated, the evaporator 3 heats the wastewater again by a coil heater 8, a stirrer 7 is started to stir in the heating process, secondary steam generated by evaporation of the wastewater enters the heat exchanger 2 to be cooled, at the moment, salt mud is formed by concentration and precipitation in the evaporator 3 and is periodically discharged into a solid-liquid separator 16 by workers, the solid-liquid separator 16 separates the salt mud, the separated filtrate is returned to the raw water storage tank 1 to be circularly treated, the obtained salt slag is used as hazardous waste treatment, the secondary steam after evaporation of the wastewater enters the heat exchanger 2 to be cooled to form condensed water, and enters the advanced oxidation reactor 4 after being mixed with a part of water body with an oxidant from the advanced oxidation reactor 4 and being further circularly cooled by a circulating pump 15, the wastewater undergoes a strong oxidation reaction under the catalysis of ultraviolet light in the advanced oxidation reactor 4 and is discharged out of the device after catalytic oxidation, and pretreatment is completed.
In another embodiment, as shown in fig. 2, a first thermometer 9 is provided in the evaporator 3 and a second thermometer 13 is provided in the advanced oxidation reactor 4. When the high-grade oxidation reactor is used, the temperature in the evaporator 3 can be controlled to be 105 ℃ through the first thermometer 9, and the reaction temperature of the high-grade oxidation reactor 4 can be controlled to be 45-50 ℃ through the second thermometer 13.
When the device is used, pesticide wastewater enters a raw water storage tank 1 for collection, the pesticide wastewater is lifted by a raw water lifting pump 6 and enters a heat exchanger 2, secondary steam of an evaporator 3 and heat of a high-level oxidation reactor 4 are utilized for preheating, raw water enters the evaporator 3 after being heated, the raw water is heated to 105 ℃ by a coil heater 8 in the evaporator 3 and is stirred by a stirrer 7, the coil heater 8 is started and stopped according to the timely temperature and the set temperature of a first thermometer 9, the raw water is evaporated after reaching the boiling point in the evaporator 3 to form crystalline salt mud and secondary steam, the salt mud is concentrated and is periodically discharged into a solid-liquid separator 16 through a salt discharging valve 10 for solid-liquid separation, the secondary steam enters the heat exchanger 2 for cooling and cooling into condensed water, mixed high-level oxidation circulating water enters a circulating pump 15, the mixed water enters the heat exchanger 2 for cooling and enters the high-level oxidation reactor 4 after cooling, an oxidant of the medicament storage tank 5 is lifted to be further mixed with the mixed water output by the heat exchanger 2 by a medicament adding pump 12 and enters the high-level oxidation reactor 4, the salt mud is concentrated and is subjected to the timely decomposition of the harmful substances in the ultraviolet light source 14 under the catalysis of the condition, and the temperature of the second thermometer is set by the temperature of the second thermometer 13, and the temperature of the high-level oxidation reactor is opened and closed.
When in use, the coil heater 8 of the evaporator 3 is used for heating according to the set temperature and the timely temperature ratio of the evaporator 3, and the valve of the cooling water pipe 11 is used for cooling according to the set temperature of the advanced oxidation reactor 4 and the timely temperature ratio of the advanced oxidation reactor 4.
The device can be provided with a fully-closed container which can work at normal pressure to reduce secondary pollution, can be provided with an integrated skid-mounted mode, is convenient to install and transport, can realize full-automatic operation, is simple and convenient to operate, fully considers the utilization of the surplus heat of the device, utilizes the heat exchange of raw water, secondary steam, cooling water and advanced oxidation circulating water, saves energy consumption, can separate and oxidize characteristic pollutants more thoroughly, and can primarily raise the temperature of the raw water, reduce the temperature of the secondary steam to obtain condensed water, reduce the temperature of circulating water of an advanced oxidation reactor and reduce the temperature of the cooling water inlet valve when the temperature is too high.
It should be noted that the terms like "upper", "lower", "left", "right", "front", "rear", and the like are also used for descriptive purposes only and are not intended to limit the scope of the utility model in which the utility model may be practiced, but rather the relative relationship of the terms may be altered or modified without materially altering the teachings of the utility model.
The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the utility model without departing from the principles thereof are intended to be within the scope of the utility model as set forth in the following claims.
Claims (10)
1. The pesticide wastewater pretreatment device is characterized by comprising a raw water storage tank (1), a heat exchanger (2), an evaporator (3) and a high-grade oxidation reactor (4), wherein the raw water storage tank (1) is used for storing raw water, the raw water storage tank (1) is connected with the heat exchanger (2) and is connected with the evaporator (3) through the heat exchanger (2), the evaporator (3) is provided with a steam port, the steam port is reconnected with the heat exchanger (2), the high-grade oxidation reactor (4) is connected with the heat exchanger (2), the evaporator (3) is also provided with a salt discharging port, and the heat exchanger (2) is externally connected with cold water through a cooling water pipe (11).
2. The device for pretreating pesticide wastewater according to claim 1, wherein the salt discharging port of the evaporator (3) is connected with a solid-liquid separator (16), the solid-liquid separator (16) is connected with an input port of the raw water storage tank (1), the solid-liquid separator (16) is used for collecting salt mud discharged by the evaporator (3) for solid-liquid separation, and filtrate obtained by separation is discharged into the raw water storage tank (1) again.
3. The pesticide wastewater pretreatment device according to claim 2, wherein a salt discharge valve (10) is arranged between the evaporator (3) and the solid-liquid separator (16).
4. The apparatus for pretreatment of agricultural chemical wastewater according to claim 1, wherein the lower end of said evaporator (3) is formed in a downward tapered shape, and the tapered portion is formed as said salt discharging port, and said steam port is formed at the upper end of said evaporator (3).
5. The pesticide wastewater pretreatment device according to claim 1, wherein a coil heater (8) is arranged on the side wall of the evaporator (3), and a stirrer (7) is arranged in the evaporator (3).
6. The pesticide wastewater pretreatment device according to claim 1 is characterized in that a water outlet and a circulating port are formed in the output end of the advanced oxidation reactor (4), the circulating port is connected with a circulating pipeline, the evaporator (3) is connected with the heat exchanger (2) through the steam port and then connected with the circulating pipeline through the heat exchanger (2), and the circulating pipeline is connected with the heat exchanger (2) and is connected with the input end of the advanced oxidation reactor (4) through the heat exchanger (2).
7. The apparatus of claim 6, wherein the circulating pipe is provided with a cooling circulation pump (15) for mixing the water flowing out from the circulating port of the advanced oxidation reactor (4) with the water condensed by the steam from the heat exchanger (2) and then inputting the mixture into the heat exchanger (2).
8. The device for pretreating pesticide wastewater according to claim 6, further comprising a pesticide storage tank (5), wherein the pesticide storage tank (5) is connected to a pipeline connecting the heat exchanger (2) with the input end of the advanced oxidation reactor (4), and the pesticide storage tank (5) is provided with a pesticide feeding pump (12) for feeding the pesticide into the advanced oxidation reactor (4).
9. The device for pretreating pesticide wastewater according to claim 1, wherein the advanced oxidation reactor (4) is divided into a flow channel formed by communicating a plurality of S-shaped channels through a plurality of partition plates, and an ultraviolet light source (14) is arranged between every two partition plates.
10. The pesticide wastewater pretreatment device according to claim 1, wherein a first thermometer (9) is arranged in the evaporator (3), and a second thermometer (13) is arranged in the advanced oxidation reactor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420665679.5U CN222574371U (en) | 2024-04-02 | 2024-04-02 | Pesticide wastewater pretreatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420665679.5U CN222574371U (en) | 2024-04-02 | 2024-04-02 | Pesticide wastewater pretreatment device |
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| Publication Number | Publication Date |
|---|---|
| CN222574371U true CN222574371U (en) | 2025-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202420665679.5U Active CN222574371U (en) | 2024-04-02 | 2024-04-02 | Pesticide wastewater pretreatment device |
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| CN (1) | CN222574371U (en) |
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