CN216426939U - System for treating clethodim wastewater - Google Patents
System for treating clethodim wastewater Download PDFInfo
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- CN216426939U CN216426939U CN202122863369.3U CN202122863369U CN216426939U CN 216426939 U CN216426939 U CN 216426939U CN 202122863369 U CN202122863369 U CN 202122863369U CN 216426939 U CN216426939 U CN 216426939U
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Abstract
The utility model discloses a processing system of clethodim waste water, including acid out the cauldron, acid out the cauldron and link to each other with the acid storage tank, acid out the discharge gate of cauldron and link to each other with the layering jar, the layering jar links to each other with centrifuge and oxidation cauldron respectively, oxidation cauldron links to each other with the sodium hypochlorite storage tank, and oxidation cauldron's discharge gate and alkali are analysed the cauldron and are linked to each other, the alkali is analysed the cauldron and is linked to each other with the alkali storage tank, and the discharge gate of alkali is analysed the cauldron and is linked to each other with the oil separating tank. According to the characteristics that organic impurities have different solubilities under the acidic and alkaline conditions, insoluble substances are generated by reaction under the acidic and alkaline conditions and chloramine can be removed by adopting an oxidation method, the wastewater treatment system can be used by matching the acid precipitation kettle, the oxidation kettle and the alkali precipitation kettle, can effectively remove components in wastewater, and is green, environment-friendly, high in safety and strong in operability.
Description
Technical Field
The utility model relates to a effluent disposal system, concretely relates to processing system of clethodim waste water belongs to waste water treatment equipment technical field.
Background
Clethodim (clethodim) is a broad-spectrum post-emergence herbicide for preventing and killing gramineous weeds in broad-leaved crops, which is proposed by Chevron chemical company in the United states, has very strong killing effect on various annual and perennial weeds, has little or no activity on dicotyledonous plants or nutgrass flatsedge, is mainly suitable for weeding farmlands of more than 40 crops such as soybean, flax, tobacco, watermelon and the like, and can prevent and kill more than 30 gramineous weeds such as barnyard grass and the like.
At present, waste water containing compounds such as chloramine and the like is generated in the process of producing clethodim pesticides, the chloramine is unstable, the concentration is enriched to a certain extent, and explosion is easy to occur, so that a solution is urgently needed for the clethodim production waste water containing the chloramine compounds from the aspects of environmental protection and safety, but related treatment processes or devices for the waste water are few at present.
Patent CN112387102A describes a process and a device for efficient and environment-friendly treatment of waste gas and waste liquid in the production process of propionyltrione and chloramine, but does not separately describe a treatment mode of waste water containing chloramine.
Patent CN213506675U describes an environmental protection production device for chloramine, which mainly adopts an extraction method to remove chloramine in wastewater, and is suitable for treating high-concentration chloramine wastewater, but cannot treat low-concentration ultra-chloramine wastewater.
SUMMERY OF THE UTILITY MODEL
Lack not enough of clethodim effluent treatment mode among the prior art, the utility model provides a processing system of clethodim waste water, this processing apparatus is through acid out the combination of cauldron, oxidation cauldron and alkali precipitation cauldron, can effectually get rid of the organic impurity of chloramine in the waste water to recoverable high-quality inorganic salt, solved the chloramine waste water and deposited for a long time, have the problem of explosion risk, have the advantage of safety, green, environmental protection.
The utility model discloses specific technical scheme as follows:
the utility model provides a processing system of clethodim waste water, includes that the acid is separated out the cauldron, the acid is separated out the cauldron and is linked to each other with the acid storage tank, and the discharge gate of acid separation cauldron links to each other with the layering jar, and the layering jar links to each other with centrifuge and oxidation kettle respectively, the oxidation kettle links to each other with the sodium hypochlorite storage tank, and the discharge gate of oxidation kettle and alkali are separated out the cauldron and are linked to each other, the alkali is separated out the cauldron and is linked to each other with the alkali storage tank, and the discharge gate of alkali separation cauldron links to each other with the oil separating tank.
In the treatment system, the wastewater is firstly acidified in the acidification kettle by utilizing the characteristic that the wastewater contains organic matters or organic matters with low solubility under acidic conditions, so that unstable substances in the wastewater are dissolved out under acidic conditions. Then the waste water is discharged into an oxidation kettle to oxidize and decompose organic matters such as chloramine and the like. And discharging the wastewater into an alkali precipitation kettle, and precipitating organic matters with low solubility in the wastewater under an alkaline condition, or performing alkaline hydrolysis on the organic matters under the alkaline condition to form substances with low solubility.
Further, stirrers are arranged in the acid precipitation kettle, the oxidation kettle and the alkali precipitation kettle. The stirrer can be an anchor stirrer, a paddle stirrer or a gate stirrer, and a person skilled in the art can select a suitable stirrer as required. The stirrers in the acid precipitation kettle, the oxidation kettle and the alkali precipitation kettle can be the same or different.
Further, an acid separation kettle, an acid storage tank, a layering tank, a centrifuge, an oxidation kettle, a sodium hypochlorite storage tank, an alkali separation kettle, an alkali storage tank and an oil separation tank are all connected through pipelines.
Further, a feeding hole and a discharging hole are formed in the acid separation kettle, and the acid storage tank is connected with the feeding hole of the acid separation kettle. The acid storage tank is filled with acid liquid such as hydrochloric acid and the like for acidifying the wastewater. The purpose of acidification is to remove insoluble substances in the wastewater under an acidic condition, and the wastewater after acidification enters a layering tank for standing and solid-liquid separation.
Furthermore, a discharge port is formed in the layering tank and connected with a discharge pipe, the tail end of the discharge pipe is connected with one outlet of a three-way pipe, and the other two outlets of the three-way pipe are respectively connected with the centrifugal machine and the oxidation kettle. The wastewater is kept stand in a layering tank, a solid phase is deposited on the bottom layer, and a water phase is on the upper layer. The solid phase of the bottom layer is tar and petroleum ether acid insoluble substances, and the solid phase enters a centrifuge for centrifugal dehydration to be treated as hazardous waste; the water phase on the upper layer enters an oxidation kettle for further treatment.
Further, a feed inlet and a discharge outlet are arranged on the oxidation kettle, and the sodium hypochlorite storage tank is connected with the feed inlet of the oxidation kettle. The wastewater and sodium hypochlorite are subjected to oxidation reaction in the oxidation kettle, organic matters in the wastewater are subjected to oxidative degradation, and the chloramine is oxidized into nitrogen or nitrogen-containing compounds in the oxidation kettle, so that the removal is realized.
Further, a feed inlet and a discharge outlet are arranged on the alkali precipitation kettle, and the alkali storage tank is connected with the feed inlet of the alkali precipitation kettle. The alkali storage tank is filled with an alkali solution, the common alkali solution is a sodium hydroxide solution, the alkali solution enters the alkali precipitation kettle, the separation of alkali insoluble substances in the wastewater is ensured to be realized under a specific alkaline pH value, and the wastewater is further treated.
Further, a water outlet of the centrifugal machine is connected with the oxidation kettle. The water separated by the centrifuge also enters the oxidation kettle for subsequent treatment.
And further, carrying out oil-water separation on the wastewater in an oil separating tank, wherein a discharge port of the oil separating tank is respectively connected with a water phase tank and an oil phase tank, and the water phase tank is connected with an evaporation and concentration device to obtain solid salt. And treating the oil phase in the oil phase tank as hazardous waste.
Furthermore, a discharge port of the oil separation tank can also be connected with a three-way pipe, and the three-way pipe is respectively connected with the oil phase tank and the water phase tank.
Further, a PH meter is arranged on the acid precipitation kettle, a thermometer is arranged on the oxidation kettle, and a PH meter is arranged on the alkali precipitation kettle.
The utility model has the advantages of it is following:
1. according to the characteristics that organic impurities have different solubilities under the acidic and alkaline conditions, insoluble substances are generated by reaction under the acidic and alkaline conditions and chloramine can be removed by adopting an oxidation method, the wastewater treatment system can be used by matching the acid precipitation kettle, the oxidation kettle and the alkali precipitation kettle, can effectively remove components in wastewater, and is green, environment-friendly, high in safety and strong in operability.
2. The waste water treatment system can treat the chloramine in the waste water, and avoids the explosion risk existing in the long-term storage of the chloramine waste water.
3. The wastewater treatment system can recover high-quality inorganic salt, and improves the economic value.
Drawings
Figure 1 is the structure schematic diagram of the clethodim effluent disposal system of the utility model.
In the figure, 1, an acid precipitation kettle, 2, a layering tank, 3, a centrifuge, 4, an oxidation kettle, 5, an alkali precipitation kettle, 6, an oil separation tank, 7, an acid storage tank, 8, a sodium hypochlorite storage tank, 9, an alkali storage tank, 10, a water phase tank, 11 and an oil phase tank.
Detailed Description
The technical solutions and advantages of the present invention will be described more clearly and completely below with reference to the following specific embodiments and drawings, which are only some, but not all embodiments of the present invention. Based on the thought of the utility model, the improvement of going on this basis without creative work is all within the protection scope of the utility model.
Example 1
The utility model discloses a processing system of clethodim waste water, including acid out cauldron 1, the acid out cauldron has feed inlet and discharge gate, and acid out cauldron feed inlet links to each other with acid storage tank 7, and the discharge gate of acid out cauldron links to each other with layering jar 2, and the discharge gate of layering jar links to each other with first discharging pipe, and the end of first discharging pipe links to each other with an export of first three-way pipe, and centrifuge 3 and reation kettle 4 are connected respectively in two other exports of first three-way pipe. Wherein, three outlets of the three-way pipe are provided with valves. Wherein, the oxidation kettle is also provided with a feed inlet and a discharge outlet, the feed inlet of the oxidation kettle is connected with the layering tank, and the water outlet of the centrifuge is also connected with the feed inlet of the oxidation kettle. Still be connected with sodium hypochlorite storage tank 8 on the oxidation cauldron, the sodium hypochlorite storage tank also links to each other with oxidation cauldron's feed inlet. The discharge hole of the oxidation kettle is connected with the feed inlet of the alkali separation kettle 5, the alkali separation kettle is further connected with an alkali storage tank 9, the alkali storage tank is connected with the feed inlet of the alkali separation kettle, and the discharge hole of the alkali separation kettle is connected with the oil separation tank 6. The discharge hole of the oil separating tank is connected with a second discharge pipe, the tail end of the second discharge pipe is connected with one outlet of a second three-way pipe, the other two outlets of the second three-way pipe are respectively connected with a water phase tank 10 and an oil phase tank 11, and the water phase tank is further connected with an evaporation concentration device.
Further, stirrers are arranged in the acid precipitation kettle, the oxidation kettle and the alkali precipitation kettle to make the reaction more uniform, and the stirrers can be commonly used stirrers in the prior art, such as anchor stirrers, paddle stirrers, frame stirrers and the like.
Further, an acid storage tank is filled with an acid solution such as hydrochloric acid, an alkali storage tank is filled with an alkali solution such as a sodium hydroxide solution, and a sodium hypochlorite storage tank is filled with a sodium hypochlorite solution. The acid storage tank is connected with the acid precipitation kettle through a pipeline, and a valve, a flowmeter and a material transferring pump are arranged on the connected pipeline so as to control the feeding amount of the acid solution. The alkali storage tank and the alkali precipitation kettle are also connected through a pipeline, and a valve, a flowmeter and a material transferring pump are also arranged on the connected pipeline to control the feeding amount of the alkali solution. The sodium hypochlorite storage tank is also connected with the oxidation kettle through a pipeline, and a valve, a flowmeter and a material transferring pump are also arranged on the connected pipeline so as to control the feeding amount of the sodium hypochlorite solution.
Further, pH meters are arranged on the acid separation kettle and the alkali separation kettle, and the pH values in the acid separation kettle and the alkali separation kettle are monitored at any time.
Furthermore, a heat preservation device and a thermometer are arranged on the oxidation kettle and used for controlling the temperature of the oxidation kettle.
Furthermore, the acid precipitation kettle, the layering tank, the centrifuge, the oxidation kettle and the alkali precipitation kettle are connected through pipelines, and a material transferring pump is arranged on the corresponding pipeline.
The utility model discloses a use method is:
1. pumping the wastewater into an acid precipitation kettle, starting stirring, pumping an acid solution into the acid precipitation kettle, keeping the pH value in the acid precipitation kettle at 4-5, and stirring for reaction for 10-15 min.
2. And discharging the wastewater from the acidification kettle, entering a layering tank, and standing for 15-30min in the layering tank.
3. And discharging the wastewater in the layering tank, discharging the solid phase into a centrifugal machine for centrifugation by controlling a valve of a three-way pipe, and discharging the water phase into an oxidation kettle. The water phase removed from the centrifuge also enters the oxidation kettle.
4. Starting the stirring of the oxidation kettle, pumping the sodium hypochlorite solution into the oxidation kettle, and ensuring that the molar ratio of the sodium hypochlorite to the chloramine in the wastewater is 1-2: 1, starting a heat preservation device, keeping the temperature of the oxidation kettle at 50-70 ℃, and stirring for reaction for 30-60 min.
5. And discharging the wastewater from the oxidation kettle into an alkali precipitation kettle, starting stirring, pumping an alkali solution into the alkali precipitation kettle, keeping the pH value in the alkali precipitation kettle at 7-9, and stirring for reaction for 10-15 min.
6. And discharging the wastewater into a oil separating tank from the alkali precipitation kettle, and standing for 15-30min in the oil separating tank.
7. And discharging the wastewater in the oil separation tank, and discharging the oil phase into the oil separation tank through controlling a valve of the three-way pipe to be treated as dangerous wastewater. And discharging the water phase into a water phase tank, concentrating the wastewater in the water phase tank in an evaporation and concentration device to obtain solid inorganic salt, and directly discharging the concentrated wastewater.
Example 2
The wastewater treatment system of example 1 above was used to treat chloramine-containing wastewater generated during clethodim production. The waste water is waste water generated in clethodim production in certain pesticide chemical enterprises in Shandong, the content of chloramine in the waste water is less than 3%, and the waste water mainly contains petroleum ether and tar organic matters.
The specific method comprises the following steps:
pumping the wastewater into an acid precipitation kettle, simultaneously opening a stirrer in the kettle, adding hydrochloric acid into the acid precipitation kettle to uniformly mix the hydrochloric acid and the wastewater, and stopping introducing the hydrochloric acid when the pH value in the kettle is 4. After reacting for 10-15min, transferring the wastewater in the acidification kettle to a layering tank, and standing for layering for 30 min. And after the layering is completed, transferring the wastewater out of the layering tank, allowing the bottom solid to enter a centrifugal machine for dehydration, transferring the supernatant in the layering tank and the water dehydrated by the centrifugal machine into an oxidation kettle, and performing oxidation reaction in the oxidation kettle.
And (3) after the wastewater is completely transferred to the oxidation kettle, opening the heat preservation device and the stirrer, and controlling the temperature in the kettle to be 70 ℃. Opening a sodium hypochlorite storage tank valve after temperature rise, introducing a sodium hypochlorite solution into the oxidation kettle, and when the mole ratio of sodium hypochlorite to chloramine in the wastewater is 1.1: stopping introducing the sodium hypochlorite when the reaction time is 1, and carrying out heat preservation reaction for 1 hour.
After the oxidation reaction, transferring the wastewater to an alkali precipitation kettle, opening a stirrer in the kettle, introducing a sodium hydroxide solution into the alkali precipitation kettle, and stopping introducing the sodium hydroxide when the pH value in the kettle is 9. After reacting for 10-15min, transferring the wastewater in the alkali precipitation kettle to an oil separation tank and standing for 30 min. After standing, discharging the wastewater from the oil separating tank, allowing the oil phase to enter an oil phase tank for treatment as hazardous waste, allowing the water phase to enter an evaporation concentration device to obtain solid sodium chloride with the purity of not less than 99%, wherein the main component of the wastewater obtained after concentration is a micromolecule organic matter, and the pH value is 8-10, so that the treatment index requirement is met.
The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A system for treating clethodim wastewater is characterized in that: including acid out the cauldron, acid out cauldron (1) and acid storage tank (7) link to each other, and acid out the discharge gate of cauldron and layering jar (2) link to each other, and the layering jar links to each other with centrifuge (3) and oxidation cauldron (4) respectively, oxidation kettle links to each other with sodium hypochlorite storage tank (8), and oxidation kettle's discharge gate and alkali are analysed cauldron (5) and are linked to each other, the alkali is analysed the cauldron and is linked to each other with alkali storage tank (9), and the discharge gate of alkali is analysed the cauldron and is linked to each other with oil separating jar (6).
2. The processing system of claim 1, wherein: the oil separating tank is respectively connected with the water phase tank (10) and the oil phase tank (11), and the water phase tank is connected with the evaporation and concentration device.
3. The processing system of claim 1, wherein: and stirrers are arranged in the acid precipitation kettle, the oxidation kettle and the alkali precipitation kettle.
4. The processing system of claim 3, wherein: the stirrer is an anchor stirrer, a paddle stirrer or a frame stirrer.
5. The processing system of claim 1, wherein: the layering tank is provided with a discharge port, the discharge port is connected with a discharge pipe, the tail end of the discharge pipe is connected with one outlet of a three-way pipe, and the other two outlets of the three-way pipe are respectively connected with a centrifugal machine and an oxidation kettle.
6. The processing system according to claim 1 or 5, wherein: the water outlet of the centrifuge is connected with the oxidation kettle.
7. The processing system of claim 1, wherein: and a feed inlet of the acid precipitation kettle is connected with an acid storage tank.
8. The processing system of claim 1, wherein: and a feed inlet of the oxidation kettle is connected with a sodium hypochlorite storage tank.
9. The processing system of claim 1, wherein: and a feed inlet of the alkali precipitation kettle is connected with an alkali storage tank.
10. The processing system of claim 1, wherein: the acidification kettle is provided with a PH meter, the oxidation kettle is provided with a thermometer, and the alkali precipitation kettle is provided with a PH meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202122863369.3U CN216426939U (en) | 2021-11-22 | 2021-11-22 | System for treating clethodim wastewater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122863369.3U CN216426939U (en) | 2021-11-22 | 2021-11-22 | System for treating clethodim wastewater |
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| CN216426939U true CN216426939U (en) | 2022-05-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114735879A (en) * | 2022-06-09 | 2022-07-12 | 北京惠宇乐邦环保科技有限公司 | Method for recovering propionetrione and sodium chloride from clethodim decarboxylation wastewater |
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2021
- 2021-11-22 CN CN202122863369.3U patent/CN216426939U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114735879A (en) * | 2022-06-09 | 2022-07-12 | 北京惠宇乐邦环保科技有限公司 | Method for recovering propionetrione and sodium chloride from clethodim decarboxylation wastewater |
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