CN214735018U - Multistage preprocessing device of weedicide production waste liquid - Google Patents

Multistage preprocessing device of weedicide production waste liquid Download PDF

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Publication number
CN214735018U
CN214735018U CN202120686948.2U CN202120686948U CN214735018U CN 214735018 U CN214735018 U CN 214735018U CN 202120686948 U CN202120686948 U CN 202120686948U CN 214735018 U CN214735018 U CN 214735018U
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upper portion
acidizing
waste liquid
oxidation
cooling water
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CN202120686948.2U
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郭鹏飞
胡长江
王振宇
谢家腾
项艳
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Anhui Hao Yue Environmental Technology Co ltd
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Anhui Hao Yue Environmental Technology Co ltd
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Abstract

The utility model relates to a multi-stage pretreatment device for herbicide production waste liquid, which comprises an acidification and vein breaking device, an oxidation kettle, a flocculation precipitator and a plate frame filter press which are arranged in sequence; waste mother liquor groove is connected on the upper portion of the broken device of acidizing, first inlet means is still connected on the upper portion of the broken device of acidizing, first inlet means be sulphuric acid solution import groove, the feed inlet on oxidation cauldron upper portion is connected to the discharge gate of the broken device lower part of acidizing, second inlet means is still connected on oxidation cauldron's upper portion, second inlet means include potassium permanganate solution import groove, hydrogen peroxide solution import groove and the ferrous sulfate solution import groove of being connected with oxidation cauldron upper portion in proper order, the feed inlet on flocculation precipitator upper portion is connected to the discharge gate of oxidation cauldron lower part, the upper portion of flocculation precipitator still is connected with the third and advances liquid device, the third advance liquid device including calcium hydroxide import groove, sodium hydroxide import groove and the polyferric sulfate import groove of being connected with the flocculation precipitator in proper order.

Description

Multistage preprocessing device of weedicide production waste liquid
Technical Field
The utility model relates to a hazardous waste handles technical field, concretely relates to multistage preprocessing device of weedicide production waste liquid.
Background
The herbicide mainly comprises nicosulfuron, oxadiazon and the like, and the waste liquid from the herbicide production has the characteristics of high salinity, high organic matter content and the like, so that the treatment of the waste liquid is a challenging problem. The waste liquid of herbicide production is mainly from the chemical synthesis process, and the discharged waste water has high toxicity, high pollutant concentration, complex components, more inhibitors to microorganisms in the waste water and poor biodegradability. At present, the treatment of production waste liquid adopts incineration or a treatment mode combining anaerobic treatment and aerobic treatment. The treatment cost is high, the treatment effect is unstable, and the treated wastewater cannot reach the discharge standard, so that the environmental pollution is caused, and therefore, a new treatment technology needs to be researched to solve the treatment problem of the production waste liquid.
Disclosure of Invention
The utility model provides a multistage preprocessing device of weedicide production waste liquid, the problem invention to mentioning in the background art the utility model discloses the device solves the difficult problem of the processing of this type of production waste liquid.
In order to solve the above problem, the utility model adopts the following technical scheme: a multi-stage pretreatment device for herbicide production waste liquid comprises an acidification and vein breaking device, an oxidation kettle, a flocculation precipitator and a plate-and-frame filter press which are sequentially arranged; waste mother liquor groove is connected on the upper portion of the broken device of acidizing, first inlet means is still connected on the upper portion of the broken device of acidizing, first inlet means be sulphuric acid solution import groove, the feed inlet on oxidation cauldron upper portion is connected to the discharge gate of the broken device lower part of acidizing, second inlet means is still connected on oxidation cauldron's upper portion, second inlet means including potassium permanganate solution import groove, hydrogen peroxide solution import groove and the ferrous sulfate solution import groove of being connected with oxidation cauldron upper portion in proper order, the feed inlet on flocculation precipitator upper portion is connected to the discharge gate of oxidation cauldron lower part, the upper portion of flocculation precipitator still is connected with the third and advances liquid device, the third inlet means including calcium hydroxide import groove, sodium hydroxide import groove and the polyferric sulfate import groove of being connected with the flocculation precipitator in proper order, the discharge gate of flocculation precipitator lower part is connected plate frame pressure filter.
Furthermore, the upper parts of the oxidation kettle and the flocculation precipitator are externally connected with an exhaust pipeline, the exhaust pipeline is connected with a waste gas treatment device, and the waste gas treatment device comprises a sodium hydroxide absorber, a sulfuric acid absorber and a vacuum pump which are sequentially arranged from the gas outlet of the exhaust pipeline to the outside.
Furthermore, a first cooling water circulation device is arranged on the outer wall of the acidification vein breaking device, the first cooling water circulation device comprises a first cooling water circulation cavity arranged from the outer wall of the middle part of the acidification vein breaking device to the outer wall of the lower part of the acidification vein breaking device, a first cooling liquid inlet is arranged on the side part of the first cooling water circulation cavity, and a first cooling liquid outlet is arranged at the bottom of the first cooling water circulation cavity.
Furthermore, a second cooling water circulation device is arranged on the outer wall of the oxidation kettle and comprises a second cooling water circulation cavity which is arranged from the outer wall of the middle part of the oxidation kettle to the outer wall of the lower part of the oxidation kettle, a second cooling liquid inlet is arranged on the side part of the second cooling water circulation cavity, and a second cooling liquid outlet is arranged at the bottom of the second cooling water circulation cavity.
Still further, set up the scum board in the broken device of acidizing, the scum board be located the broken device middle part of acidizing, the slag notch is seted up to the last scum board side that lies in of the broken device of acidizing.
And furthermore, a second pump is arranged on a connecting pipeline between the acidification and vein breaking device and the oxidation kettle.
And furthermore, a third pump is arranged on a connecting pipeline between the oxidation kettle and the flocculation precipitator.
And furthermore, a fourth pump is arranged on a connecting pipeline between the flocculation precipitator and the plate frame filter press.
Furthermore, a first pump is arranged on a connecting pipeline between the waste mother liquor tank and the acidification and decomplexing device.
And furthermore, the output end of the fourth suction pump is connected with the middle part of the plate frame filter press, the upper part of the plate frame filter press is connected with the sewage treatment device, and the lower part of the plate frame filter press is connected with the solidification treatment device.
The utility model has the advantages that: through the utility model discloses the device is effectively handled weedicide production waste liquid, and it is the multistage preprocessing device that can be directed against high COD production waste liquid of high salt (total salt content 100000-. Through stabilizing the reaction rate and controlling the system temperature, the organic compound is treated by multi-stage reactions (acidification and decomplexing, oxidation reaction, acid-base neutralization and flocculation precipitation), and the three wastes of the system are effectively collected and treated in the whole reaction process, so that the pretreatment of the high-salt and high-COD production waste liquid is realized, and the stable operation of subsequent evaporation desalination and biochemical treatment is ensured.
Drawings
Fig. 1 is a structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to the attached drawing, the multistage pretreatment device for the herbicide production waste liquid comprises an acidification and vein breaking device 1, an oxidation kettle 2, a flocculation precipitator 3 and a plate and frame filter press 4 which are sequentially arranged; waste mother liquor tank 6 is connected on the upper portion of acidizing vein breaking device 1, first inlet means 5a is still connected on the upper portion of acidizing vein breaking device 1, first inlet means 5a be sulfuric acid solution import groove, the feed inlet on 2 upper portions of oxidation cauldron is connected to the discharge gate of acidizing vein breaking device 1 lower part, second inlet means 5b is still connected on 2 upper portions of oxidation cauldron, second inlet means 5b including potassium permanganate solution import groove 5b1, hydrogen peroxide solution import groove 5b2 and ferrous sulfate solution import groove 5b3 be connected with 2 upper portions of oxidation cauldron in proper order, the feed inlet on 3 upper portions of flocculation precipitator is connected to the discharge gate of 2 lower portions of oxidation cauldron, the upper portion of flocculation precipitator 3 still is connected with third inlet means 5c, third inlet means 5c include calcium hydroxide import groove 5c2, sodium hydroxide import groove 5c1 and polyferric sulfate import groove 5c3 be connected with flocculation precipitator 3 in proper order, the discharge hole at the lower part of the flocculation precipitator 3 is connected with a plate frame filter press 4.
Further, the upper parts of the oxidation kettle 2 and the flocculation precipitator 3 are externally connected with an exhaust pipeline, the exhaust pipeline is connected with an exhaust gas treatment device 10, and the exhaust gas treatment device 10 comprises a sodium hydroxide absorber 10a, a sulfuric acid absorber 10b and a vacuum pump 10c which are sequentially arranged from the air outlet of the exhaust pipeline to the outside.
Further, set up first cooling water circulating device 7a on the outer wall of acidizing vein breaking device 1, first cooling water circulating device 7a include the first cooling water circulation chamber that sets up from acidizing vein breaking device 1 middle part outer wall to its lower part outer wall, the lateral part in first cooling water circulation chamber sets up first coolant liquid import, and the bottom in first cooling water circulation chamber sets up first coolant liquid export.
Further, set up second cooling water circle device 7b on oxidation cauldron 2's the outer wall, second cooling water circle device 7b include the second cooling water circulation chamber that sets up from oxidation cauldron 2 middle part outer wall to its lower part outer wall, the lateral part in second cooling water circulation chamber sets up the second coolant liquid import, the bottom in second cooling water circulation chamber sets up the second coolant liquid export.
Still further, set up in the broken device 1 of acidizing and scrape slag plate 1a, the slag plate 1a be located the broken device 1 middle part of acidizing, it sets up slag notch 1b to lie in the broken device 1a side of scraping of acidizing on the broken device 1 of acidizing.
And furthermore, a second pump is arranged on a connecting pipeline between the acidification and decomplexation device 1 and the oxidation kettle 2.
And furthermore, a third pump is arranged on a connecting pipeline between the oxidation kettle 2 and the flocculation precipitator 3.
And furthermore, a fourth pump is arranged on a connecting pipeline between the flocculation precipitator 3 and the plate frame filter press 4.
Furthermore, a first pump is arranged on a connecting pipeline between the waste mother liquor tank 6 and the acidification and decomplexing device 1.
And furthermore, the output end of the fourth suction pump is connected with the middle part of the plate frame filter press 4, the upper part of the plate frame filter press 4 is connected with the sewage treatment device 8, and the lower part of the plate frame filter press 4 is connected with the solidification treatment device 9.
The utility model discloses a multistage preprocessing device of weedicide production waste liquid, including the broken device 1 of the acidizing of connecting useless (mother) liquid (storage) groove 6, the upper portion of the broken device 1 of acidizing be connected with sulphuric acid solution import groove, the inferior part of the broken device 1 of acidizing be connected with the upper portion of reation kettle 2, reation kettle 2's upper portion still is connected with potassium permanganate solution import groove 5b1, hydrogen peroxide solution import groove 5b2 and ferrous sulfate solution import groove 5b3, reation kettle 2's sub-unit connection flocculation precipitator 3, calcium hydroxide import groove 5c2, sodium hydroxide import groove 5c1 and polymerization ferric sulfate import groove 5c3 are still connected respectively to the upper portion of flocculation precipitator 3, the sub-unit connection sheet frame pressure filter 4 of flocculation precipitator 3; a first cooling water circulating device 7a is arranged on the kettle wall of the reaction kettle of the acidification and vein breaking device 1; the reaction kettle wall of the oxidation kettle 2 is provided with a second cooling water circulating device 7 b; further, a slag scraping plate 1a is arranged in the acidification and vein breaking device 1; furthermore, the output end of the waste mother liquor tank 6 is provided with a first pump, and the output end of the first pump is connected with the upper part of the acidification and vein breaking device 1. Further, a first reactant outlet is formed in the bottom of the acidification and vein breaking device 1, a second pump is arranged at the output end of the first reactant outlet, and the output end of the second pump is connected with the oxidation kettle 2. Further, the bottom of the oxidation kettle 2 is provided with a second reactant outlet, the output end of the second reactant outlet is provided with a third pump, and the output end of the third pump is connected with the flocculation precipitator 3. Still further, the bottom of the flocculation precipitator 4 is provided with a third reactant outlet, the output end of the third reactant outlet is provided with a fourth suction pump, the output end of the fourth suction pump is connected with the middle part of the plate frame filter press 4, the upper part of the plate frame filter press 4 is connected with the sewage treatment device 8, and the lower part of the plate frame filter press 4 is connected with the solidification treatment device 9.
Through the utility model discloses the device is effectively handled weedicide production waste liquid, and it is the multistage preprocessing device that can be directed against high COD production waste liquid of high salt (total salt content 100000-. Through stabilizing the reaction rate and controlling the system temperature, the organic compound is treated by multi-stage reactions (acidification and decomplexing, oxidation reaction, acid-base neutralization and flocculation precipitation), and the three wastes of the system are effectively collected and treated in the whole reaction process, so that the pretreatment of the high-salt and high-COD production waste liquid is realized, and the stable operation of subsequent evaporation desalination and biochemical treatment is ensured.
The multistage pretreatment process of the herbicide production waste liquid based on the device comprises the following steps:
1) preparing a medicament: preparing corresponding sulfuric acid solution, potassium permanganate solution, hydrogen peroxide, ferrous sulfate solution and sodium hydroxide solution in advance according to the COD index content in the production waste liquid to be treated, preparing 10% sodium hydroxide solution in an alkali absorption device (namely a sodium hydroxide absorber 10a) in a (waste) gas (waste) treatment device 10, and preparing 10% sulfuric acid solution in an acid absorption device (namely a sulfuric acid absorber 10 b);
2) acidifying and breaking the collaterals: pumping the production waste liquid into an acidification and vein breaking device 1, adding a sulfuric acid solution to adjust the pH value to 1.0-2.0, completely mixing, scraping the upper layer floating slag out by a scraping (slag) plate 1a, and then incinerating;
3) and (3) oxidation reaction: pumping the mixture treated in the step 2) into an oxidation kettle 2, controlling the adding flow of the waste liquid, adding the waste liquid in batches, and adding a potassium permanganate solution to oxidize and degrade organic matters;
MnO4 -+8H++5e→Mn2+4H2O(E=1.51V)
MnO4 -+2H2O+3e→MnO2+4OH-(E=0.59V)
after the reaction is completed, ferrous sulfate and hydrogen peroxide are added to form a Fenton system so as to further degrade the organic matters;
Fe2++H2O2→Fe3++HO·+OH-
RH+HO·→R·+H2O
H2O2+HO·→HO2·+H2O
Fe2++HO·→Fe3++OH-
Fe3++H2O2→Fe2++H++HO2·
Fe3++HO2·→Fe2++H++O2
R.+O2→ROO+→…→CO2+H2O
4) flocculation and precipitation: pumping the treated mixed solution into a flocculation precipitator 3, adding calcium hydroxide and sodium hydroxide to adjust the pH value of the solution to about 8.0, and then adding polymeric ferric sulfate for flocculation precipitation;
OH-+H+→H2O
Fe3++3OH-→Fe(OH)3
Ca2++SO4 2-→CaSO4
5) cooling: a large amount of heat energy is released in the processes of acidification, decomplexing and oxidation reaction, and the reaction system is controlled to be about 40 ℃ by cooling the circulating water through the first cooling water circulating device 7a and the second cooling water circulating device 7b, so that the stability and the safety of the reaction are improved;
6) waste gas treatment: starting a vacuum device (namely a vacuum pump 10c of the waste gas treatment device 10) when the oxidation reaction starts, controlling the reaction system to be in a micro-negative pressure state, enabling gas generated in the reaction process to sequentially pass through a sodium hydroxide absorber 10a and a sulfuric acid absorber 10b, and discharging the gas after treatment;
7) curing and burying: and (3) allowing the mixed liquor treated in the step 6) to pass through a plate-and-frame filter press 4, performing filter pressing to obtain sludge, performing stabilization treatment, ensuring that the treated stabilized product meets the requirement of landfill entrance control, and transferring the filtrate to a sewage treatment device 8 for biochemical treatment.
The above description is only a 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. The utility model provides a multistage preprocessing device of weedicide production waste liquid which characterized in that: comprises an acidification and vein breaking device (1), an oxidation kettle (2), a flocculation precipitator (3) and a plate-frame filter press (4) which are arranged in sequence; waste mother liquor tank (6) is connected on the upper portion of acidizing broken vein device (1), first inlet means (5a) is still connected on the upper portion of acidizing broken vein device (1), first inlet means (5a) be sulfuric acid solution import groove, the feed inlet on oxidation cauldron (2) upper portion is connected to the discharge gate of acidizing broken vein device (1) lower part, second inlet means (5b) are still connected on the upper portion of oxidation cauldron (2), second inlet means (5b) including potassium permanganate solution import groove (5b1), hydrogen peroxide solution import groove (5b2) and ferrous sulfate solution import groove (5b3) that are connected with oxidation cauldron (2) upper portion in proper order, the feed inlet on flocculation precipitator (3) upper portion still is connected with third inlet means (5c) on the upper portion of flocculation precipitator (3), third inlet means (5c) including calcium hydroxide import groove (5c2) that are connected with flocculation precipitator (3) in proper order, A sodium hydroxide inlet tank (5c1) and a polymeric ferric sulfate inlet tank (5c3), and a discharge hole at the lower part of the flocculation precipitator (3) is connected with a plate frame filter press (4).
2. The multistage pretreatment device for herbicide production waste liquid according to claim 1, characterized in that: the external exhaust pipe in upper portion of oxidation kettle (2), flocculation precipitator (3), connect exhaust treatment device (10) on the exhaust pipe way, exhaust treatment device (10) including from exhaust pipe gas outlet outwards set gradually sodium hydroxide absorber (10a), sulphuric acid absorber (10b), vacuum pump (10 c).
3. The multistage pretreatment device for herbicide production waste liquid according to claim 1, characterized in that: set up first cooling water circulating device (7a) on the outer wall of acidizing vein breaking device (1), first cooling water circulating device (7a) including from the first cooling water circulation chamber that acidizing vein breaking device (1) middle part outer wall set up to its lower part outer wall, the lateral part in first cooling water circulation chamber sets up first coolant liquid import, the bottom in first cooling water circulation chamber sets up first coolant liquid export.
4. The multistage pretreatment device for herbicide production waste liquid according to claim 1, characterized in that: set up second cooling water circulating device (7b) on the outer wall of oxidation cauldron (2), second cooling water circulating device (7b) including the second cooling water circulation chamber that sets up from oxidation cauldron (2) middle part outer wall to its lower part outer wall, the lateral part in second cooling water circulation chamber sets up the second coolant liquid import, the bottom in second cooling water circulation chamber sets up the second coolant liquid export.
5. The multistage pretreatment device for herbicide production waste liquid according to claim 1 or 2, characterized in that: set up in broken device of acidizing (1) and scrape slag scraper (1a), slag scraper (1a) be located the broken device of acidizing (1) middle part, lie in on the broken device of acidizing (1) that the slag notch (1b) is seted up to scrape slag scraper (1a) side.
6. A multistage pretreatment device for herbicide production waste liquid according to claim 1, 2 or 3, characterized in that: a second pump is arranged on a connecting pipeline between the acidification and vein breaking device (1) and the oxidation kettle (2).
7. A multistage pretreatment device for herbicide production waste liquid according to claim 1, 2 or 3, characterized in that: a third pump is arranged on a connecting pipeline between the oxidation kettle (2) and the flocculation precipitator (3).
8. A multistage pretreatment device for herbicide production waste liquid according to claim 1, 2 or 3, characterized in that: a fourth pump is arranged on a connecting pipeline between the flocculation precipitator (3) and the plate frame filter press (4).
9. The multistage pretreatment device for herbicide production waste liquid according to claim 1, characterized in that: a first pump is arranged on a connecting pipeline between the waste mother liquor tank (6) and the acidification and decomplexing device (1).
10. The multistage pretreatment device for herbicide production waste liquid according to claim 7, characterized in that: the output end of the fourth pump is connected with the middle part of the plate frame filter press (4), the upper part of the plate frame filter press (4) is connected with the sewage treatment device (8), and the lower part of the plate frame filter press (4) is connected with the solidification treatment device (9).
CN202120686948.2U 2021-04-02 2021-04-02 Multistage preprocessing device of weedicide production waste liquid Active CN214735018U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120686948.2U CN214735018U (en) 2021-04-02 2021-04-02 Multistage preprocessing device of weedicide production waste liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120686948.2U CN214735018U (en) 2021-04-02 2021-04-02 Multistage preprocessing device of weedicide production waste liquid

Publications (1)

Publication Number Publication Date
CN214735018U true CN214735018U (en) 2021-11-16

Family

ID=78600102

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120686948.2U Active CN214735018U (en) 2021-04-02 2021-04-02 Multistage preprocessing device of weedicide production waste liquid

Country Status (1)

Country Link
CN (1) CN214735018U (en)

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