CN113087280A - System and method for treating glyphosate production wastewater - Google Patents
System and method for treating glyphosate production wastewater Download PDFInfo
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- CN113087280A CN113087280A CN201911334173.6A CN201911334173A CN113087280A CN 113087280 A CN113087280 A CN 113087280A CN 201911334173 A CN201911334173 A CN 201911334173A CN 113087280 A CN113087280 A CN 113087280A
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- XDDAORKBJWWYJS-UHFFFAOYSA-N glyphosate Chemical compound OC(=O)CNCP(O)(O)=O XDDAORKBJWWYJS-UHFFFAOYSA-N 0.000 title claims abstract description 156
- 239000005562 Glyphosate Substances 0.000 title claims abstract description 155
- 229940097068 glyphosate Drugs 0.000 title claims abstract description 155
- 239000002351 wastewater Substances 0.000 title claims abstract description 148
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 14
- 239000007800 oxidant agent Substances 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 27
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 26
- 239000001301 oxygen Substances 0.000 claims abstract description 26
- 239000007789 gas Substances 0.000 claims abstract description 22
- 238000004062 sedimentation Methods 0.000 claims abstract description 20
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000010802 sludge Substances 0.000 claims description 43
- 239000002253 acid Substances 0.000 claims description 41
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 31
- 238000001914 filtration Methods 0.000 claims description 24
- 239000000376 reactant Substances 0.000 claims description 24
- 238000006864 oxidative decomposition reaction Methods 0.000 claims description 21
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 239000010865 sewage Substances 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 11
- 230000003647 oxidation Effects 0.000 claims description 10
- 238000007254 oxidation reaction Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 238000000354 decomposition reaction Methods 0.000 claims description 4
- 239000010842 industrial wastewater Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 244000005700 microbiome Species 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 abstract description 2
- 239000007791 liquid phase Substances 0.000 abstract 1
- 239000012071 phase Substances 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- TYBWABJIIOVYOR-UHFFFAOYSA-N OCC(C(O)=O)OP(=O)=O Chemical compound OCC(C(O)=O)OP(=O)=O TYBWABJIIOVYOR-UHFFFAOYSA-N 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009298 carbon filtering Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000002363 herbicidal effect Effects 0.000 description 1
- 239000004009 herbicide Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- OJURWUUOVGOHJZ-UHFFFAOYSA-N methyl 2-[(2-acetyloxyphenyl)methyl-[2-[(2-acetyloxyphenyl)methyl-(2-methoxy-2-oxoethyl)amino]ethyl]amino]acetate Chemical compound C=1C=CC=C(OC(C)=O)C=1CN(CC(=O)OC)CCN(CC(=O)OC)CC1=CC=CC=C1OC(C)=O OJURWUUOVGOHJZ-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- WRUUGTRCQOWXEG-UHFFFAOYSA-N pamidronate Chemical compound NCCC(O)(P(O)(O)=O)P(O)(O)=O WRUUGTRCQOWXEG-UHFFFAOYSA-N 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/727—Treatment of water, waste water, or sewage by oxidation using pure oxygen or oxygen rich gas
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
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- C02F2209/03—Pressure
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F3/28—Anaerobic digestion processes
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Abstract
The invention provides a glyphosate production wastewater treatment system and a glyphosate production wastewater treatment method using the same, wherein the glyphosate production wastewater treatment system comprises the following steps: a glyphosate wastewater oxidizer, a micro-interface generator, a primary filter sedimentation tank and the like; the micro-interface generator breaks oxygen to form micron-sized bubbles with micron scale, the micron-sized bubbles have physicochemical properties which are not possessed by conventional bubbles, and the calculation formulas of the volume and the surface area of the sphere can show that the total surface area of the bubbles is inversely proportional to the diameter of a single bubble under the condition that the total volume is not changed, so that the total surface area of the micron-sized bubbles is huge, the micron-sized bubbles and glyphosate wastewater are mixed to form a gas-liquid mixture, the contact area of the gas phase and the liquid phase is increased, the glyphosate wastewater is fully oxidized and decomposed under a lower preset condition, and the industrialization difficulty of glyphosate production wastewater treatment is effectively reduced.
Description
Technical Field
The invention relates to the field of pesticide wastewater treatment, in particular to a system and a method for treating glyphosate production wastewater.
Background
Glyphosate is widely used in current agricultural production as a high-efficiency and low-toxicity herbicide. Its chemical name is N-phosphonomethylglycine, also called glyphosate, phosphoglyceric acid. At present, the domestic glyphosate production capacity is about 60 ten thousand t/year, and still increases at a high speed at a growth rate of 10% per year, the main production processes of glyphosate are DIA method and dimethyl ester method, about 4.5t of glyphosate mother liquor and 10-12 t of phosphorus-containing wastewater are generated according to statistics per 1t of glyphosate produced, and the wastewater has high organic matter content, salt content, COD (chemical oxygen demand) and the like and is difficult to degrade.
The glyphosate wastewater has high COD value, high concentration, high salt content and difficult degradation, thus becoming a technical problem faced by glyphosate manufacturers. The treatment method aiming at the glyphosate wastewater comprises an oxidation method, a precipitation method, a resin adsorption method, a micro-electrolysis method and a biological method, wherein the pressurized air or oxygen oxidation method is an oxidative decomposition reaction carried out by introducing air or oxygen under the condition of strong acid at the temperature of more than 200 ℃, so that macromolecular organic matters in the glyphosate wastewater are decomposed, organic phosphorus is mostly oxidized into phosphoric acid and salts thereof, the treatment effect is good, and the cost of an oxidant is low.
Disclosure of Invention
In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
In order to at least partially solve the technical problem, in one aspect, the present invention provides a system for treating wastewater from glyphosate production, comprising:
a glyphosate wastewater oxidizer for providing an oxidative decomposition reaction site for glyphosate wastewater;
the micro-interface generator converts pressure energy of gas and/or kinetic energy of liquid into bubble surface energy and transmits the bubble surface energy to a gas reactant, the gas reactant is crushed into micron-sized bubbles with the diameter of more than or equal to 1 mu m and less than 1mm so as to improve the mass transfer area between the gas reactant and the liquid reactant, reduce the thickness of a liquid film and reduce mass transfer resistance, and the crushed micron-sized bubbles of the liquid reactant and the gas reactant are mixed to form a gas-liquid mixture so as to enhance the mass transfer efficiency and the reaction efficiency between the liquid reactant and the gas reactant within a preset operating condition range;
the primary filtering sedimentation tank is used for settling and filtering large-particle impurities in the glyphosate wastewater;
the acid adjusting tank is used for adjusting the acidity of the glyphosate wastewater to be suitable for subsequent oxidative decomposition;
the anaerobic sludge bed reactor is used for carrying out biochemical treatment on the glyphosate wastewater after oxidative decomposition;
the activated carbon filter tank is used for filtering sewage flowing out of the anaerobic sludge bed reactor;
the heat exchanger is used for carrying out heat exchange on the glyphosate wastewater to be oxidized and the glyphosate wastewater after oxidation;
and the heater is used for heating the glyphosate wastewater to be oxidized and an oxygen source.
Preferably, the micro-interface generator is a pneumatic micro-interface generator, the micro-interface generator is located in the glyphosate wastewater oxidizer, and the micro-interface generator is used for crushing oxygen to form micron-sized bubbles and outputting the micron-sized bubbles into the glyphosate wastewater oxidizer after the crushing is finished to mix with the glyphosate wastewater to form a gas-liquid mixture.
Preferably, the inside and outside stainless steel wire filter screen and the first pump body of being provided with respectively of primary filter sedimentation tank, the first pump body is used for transmitting the glyphosate waste water extremely in the primary filter sedimentation tank, the stainless steel wire filter screen is arranged in the filtering glyphosate waste water large granule impurity.
Preferably, the acid adjusting tank is communicated with the primary filtering sedimentation tank and the heat exchanger, an acid adding pipe is communicated with the acid adjusting tank and used for adding acid into the acid adjusting tank to reduce the pH value of the glyphosate wastewater.
Preferably, the glyphosate waste water oxidation tank is communicated with the acid regulating tank, a compressor and a second pump body are arranged on the side part of the glyphosate waste water oxidizer, the compressor is used for transmitting oxygen to the micro-interface generator, and the second pump body is used for transmitting the glyphosate waste water after oxidative decomposition to the heat exchanger.
Preferably, the anaerobic sludge bed reactor with the heat exchanger is linked together, anaerobic sludge bed reactor's lateral part is provided with the vacuum ware, the third pump body and the fourth pump body, anaerobic sludge bed reactor's inside is provided with marsh gas district, clear water district, filler district and mud district from top to bottom, the vacuum ware is used for maintaining anaerobic environment in the anaerobic sludge bed reactor, the third pump body with the fourth pump body is used for discharging respectively sewage and mud in the anaerobic sludge bed reactor.
Preferably, the heater includes:
the first heater is used for heating oxygen to be fed into the glyphosate wastewater oxidizer;
and the second heater is used for heating the glyphosate wastewater to enter the glyphosate wastewater oxidizer.
Preferably, the activated carbon filter tank is communicated with the anaerobic sludge bed reactor, and a plurality of layers of activated carbon particle plates are arranged in the activated carbon filter tank.
In another aspect, the present invention provides a method for treating glyphosate industrial wastewater using a glyphosate industrial wastewater treatment system, comprising the steps of:
step 1: the first pump body works to introduce external glyphosate wastewater into the primary filtering sedimentation tank, and large-particle impurities in the glyphosate wastewater are filtered by a stainless steel wire filter screen in the primary filtering sedimentation tank;
step 2: the glyphosate waste water after primary filtration in the step 1 enters an acid regulating pool under the action of gravity, and acid is added into the acid regulating pool through an acid adding pipe so as to reduce the pH value of the glyphosate waste water;
and step 3: the second pump body works, the glyphosate wastewater in the acid regulating pool is drained into the glyphosate wastewater oxidizer, the glyphosate wastewater is heated by the second heater and then enters the glyphosate wastewater oxidizer, the compressor works, oxygen heated by the first heater is transmitted into the micro-interface generator, the micro-interface generator works to crush the oxygen to form micron-sized bubbles, the micron-sized bubbles are output into the glyphosate wastewater oxidizer after the crushing is finished and are mixed with the glyphosate wastewater to form a gas-liquid mixture, and the oxygen and the glyphosate wastewater are subjected to oxidative decomposition reaction to oxidize and decompose macromolecular organic matters in the glyphosate wastewater into micromolecular substances;
and 4, step 4: the glyphosate waste water after oxidative decomposition is transmitted into a heat exchanger, the heat exchanger exchanges heat between the high-temperature waste water after oxidative decomposition in the glyphosate waste water oxidizer and the glyphosate waste water in an acid regulating tank to be fed into the glyphosate waste water oxidizer, and the high-temperature waste water after heat exchange is fed into an anaerobic sludge bed reactor after being cooled;
and 5: the anaerobic microorganisms in the packing area in the anaerobic sludge bed reactor continuously carry out biochemical decomposition on the glyphosate wastewater, the decomposed gas rises to a biogas area, the solid is settled to the sludge area, and the rest wastewater is kept in a clear water area;
step 6: and sewage and sludge in the anaerobic sludge bed reactor are discharged through the work of the third pump body and the fourth pump body, and the sewage is filtered and discharged through the activated carbon filter tank.
Preferably, the PH value of the glyphosate waste water in the acid regulating tank is 4-5.5, the temperature in the glyphosate waste water oxidizer is 180-210 ℃, and the pressure is 1-2 Mpa.
In some embodiments of the invention, the micro-interface generator is used for crushing oxygen to form micron-sized bubbles with micron scale, the micron-sized bubbles have physicochemical properties which are not possessed by conventional bubbles, and a calculation formula of the volume and the surface area of the sphere shows that under the condition of unchanged total volume, the total surface area of the bubbles is inversely proportional to the diameter of a single bubble, so that the total surface area of the micron-sized bubbles is huge, the micron-sized bubbles and glyphosate wastewater are mixed to form a gas-liquid mixture, the contact area of the gas-liquid two phases is increased, the glyphosate wastewater is sufficiently oxidized and decomposed under a lower preset condition, and the industrialization difficulty of glyphosate production wastewater treatment is effectively reduced.
Drawings
In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings.
FIG. 1 is a schematic view of a system for treating glyphosate production wastewater according to an embodiment of the present invention.
Description of reference numerals:
1: glyphosate wastewater oxidizer
2: micro-interface generator
3: preliminary filtering sedimentation tank
4: acid regulating pool
5: anaerobic sludge bed reactor
6: active carbon filtering tank
7: heat exchanger
81: first heater
82: second heater
9: first pump body
10: acid adding pipe
11: compressor with a compressor housing having a plurality of compressor blades
12: second pump body
13: vacuum device
14: third pump body
15: the fourth pump body
16: biogas area
17: clear water area
18: packing area
19: sludge area
20: active carbon particle board
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in detail so as not to obscure the embodiments of the invention.
In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the invention. It is apparent that the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The following detailed description of preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
As shown in FIG. 1, the present invention provides a glyphosate production wastewater treatment system, comprising:
a glyphosate waste water oxidizer 1 for providing an oxidative decomposition reaction site for glyphosate waste water;
the micro-interface generator 2 converts pressure energy of gas and/or kinetic energy of liquid into bubble surface energy and transmits the bubble surface energy to a gas reactant, the gas reactant is crushed into micron-sized bubbles with the diameter of more than or equal to 1 mu m and less than 1mm so as to improve the mass transfer area between the gas reactant and the liquid reactant, reduce the thickness of a liquid film and reduce mass transfer resistance, and the crushed micron-sized bubbles of the liquid reactant and the gas reactant are mixed to form a gas-liquid mixture so as to enhance the mass transfer efficiency and the reaction efficiency between the liquid reactant and the gas reactant within a preset operating condition range;
the primary filtering sedimentation tank 3 is used for settling and filtering large-particle impurities in the glyphosate wastewater;
the acid adjusting tank 4 is used for adjusting the acidity of the glyphosate wastewater to be suitable for subsequent oxidative decomposition;
an anaerobic sludge bed reactor 5 for performing biochemical treatment on the glyphosate wastewater after oxidative decomposition;
an activated carbon filter tank 6 for filtering the sewage flowing out of the anaerobic sludge bed reactor;
the heat exchanger 7 is used for carrying out heat exchange on the glyphosate wastewater to be oxidized and the glyphosate wastewater after oxidation;
and the heater is used for heating the glyphosate wastewater to be oxidized and an oxygen source.
Specifically, the micro-interface generator is a pneumatic micro-interface generator, the micro-interface generator is located in the glyphosate wastewater oxidizer, and the micro-interface generator is used for crushing oxygen to form micron-sized bubbles and outputting the micron-sized bubbles into the glyphosate wastewater oxidizer after crushing is completed to be mixed with glyphosate wastewater to form a gas-liquid mixture.
Particularly, the inside and outside stainless steel wire filter screen and the first pump body 9 of being provided with respectively of primary filter sedimentation tank, the first pump body is used for transmitting the glyphosate waste water extremely in the primary filter sedimentation tank, the stainless steel wire filter screen is arranged in the filtering glyphosate waste water large granule impurity.
Specifically, the acid adjusting pool is communicated with the primary filtering sedimentation pool and the heat exchanger, an acid adding pipe 10 is communicated with the acid adjusting pool and used for adding acid into the acid adjusting pool to reduce the pH value of the glyphosate wastewater.
Specifically, the glyphosate waste water oxidation tank is communicated with the acid regulating tank, a compressor 11 and a second pump body 12 are arranged on the side of the glyphosate waste water oxidizer, the compressor is used for transmitting oxygen to the micro-interface generator, and the second pump body is used for transmitting the glyphosate waste water after oxidation and decomposition to the heat exchanger.
Particularly, anaerobic sludge bed reactor with the heat exchanger is linked together, anaerobic sludge bed reactor's lateral part is provided with vacuum vessel 13, third pump body 14 and fourth pump body 15, anaerobic sludge bed reactor's inside is provided with marsh gas district 16, clear water district 17, filler district 18 and mud district 19 from top to bottom, the vacuum vessel is used for maintaining anaerobic environment in the anaerobic sludge bed reactor, the third pump body with the fourth pump body is used for discharging respectively sewage and mud in the anaerobic sludge bed reactor.
Specifically, the heater includes:
a first heater 81 for heating oxygen to be introduced into the glyphosate wastewater oxidizer;
a second heater 82 for heating the glyphosate waste water to be fed into the glyphosate waste water oxidizer.
Specifically, the activated carbon filter tank is communicated with the anaerobic sludge bed reactor, and a plurality of layers of activated carbon particle plates 20 are arranged in the activated carbon filter tank.
The invention also provides a glyphosate production wastewater treatment method using the glyphosate production wastewater treatment system, which comprises the following steps:
step 1: the first pump body works to introduce external glyphosate wastewater into the primary filtering sedimentation tank, and large-particle impurities in the glyphosate wastewater are filtered by a stainless steel wire filter screen in the primary filtering sedimentation tank;
step 2: the glyphosate waste water after primary filtration in the step 1 enters an acid regulating pool under the action of gravity, and acid is added into the acid regulating pool through an acid adding pipe so as to reduce the pH value of the glyphosate waste water;
and step 3: the second pump body works, the glyphosate wastewater in the acid regulating pool is drained into the glyphosate wastewater oxidizer, the glyphosate wastewater is heated by the second heater and then enters the glyphosate wastewater oxidizer, the compressor works, oxygen heated by the first heater is transmitted into the micro-interface generator, the micro-interface generator works to crush the oxygen to form micron-sized bubbles, the micron-sized bubbles are output into the glyphosate wastewater oxidizer after the crushing is finished and are mixed with the glyphosate wastewater to form a gas-liquid mixture, and the oxygen and the glyphosate wastewater are subjected to oxidative decomposition reaction to oxidize and decompose macromolecular organic matters in the glyphosate wastewater into micromolecular substances;
and 4, step 4: the glyphosate waste water after oxidative decomposition is transmitted into a heat exchanger, the heat exchanger exchanges heat between the high-temperature waste water after oxidative decomposition in the glyphosate waste water oxidizer and the glyphosate waste water in an acid regulating tank to be fed into the glyphosate waste water oxidizer, and the high-temperature waste water after heat exchange is fed into an anaerobic sludge bed reactor after being cooled;
and 5: the anaerobic microorganisms in the packing area in the anaerobic sludge bed reactor continuously carry out biochemical decomposition on the glyphosate wastewater, the decomposed gas rises to a biogas area, the solid is settled to the sludge area, and the rest wastewater is kept in a clear water area;
step 6: and sewage and sludge in the anaerobic sludge bed reactor are discharged through the work of the third pump body and the fourth pump body, and the sewage is filtered and discharged through the activated carbon filter tank.
The glyphosate waste water treatment system and the method of the invention are used for treating the glyphosate waste water (CODcr is 12500mg/L), the same semi coke is treated by the prior oxidation method as a comparative example, and the treatment conditions and the results are as follows:
| reaction temperature C | Reaction pressure Mpa | PH of glyphosate waste water | CODcrmg/L | |
| Examples | 180 | 1 | 5 | 70.5 |
| Comparative example | 210 | 2 | 3 | 230.0 |
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "component" and the like, when used herein, can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like, as used herein, may refer to one component as being directly attached to another component or one component as being attached to another component through intervening components. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the scope of the described embodiments. It will be appreciated by those skilled in the art that many variations and modifications may be made to the teachings of the invention, which fall within the scope of the invention as claimed.
Claims (10)
1. A system for treating waste water generated in glyphosate production is characterized by comprising:
a glyphosate wastewater oxidizer for providing an oxidative decomposition reaction site for glyphosate wastewater;
the micro-interface generator converts pressure energy of gas and/or kinetic energy of liquid into bubble surface energy and transmits the bubble surface energy to a gas reactant, the gas reactant is crushed into micron-sized bubbles with the diameter of more than or equal to 1 mu m and less than 1mm so as to improve the mass transfer area between the gas reactant and the liquid reactant, reduce the thickness of a liquid film and reduce mass transfer resistance, and the crushed micron-sized bubbles of the liquid reactant and the gas reactant are mixed to form a gas-liquid mixture so as to enhance the mass transfer efficiency and the reaction efficiency between the liquid reactant and the gas reactant within a preset operating condition range;
the primary filtering sedimentation tank is used for settling and filtering large-particle impurities in the glyphosate wastewater;
the acid adjusting tank is used for adjusting the acidity of the glyphosate wastewater to be suitable for subsequent oxidative decomposition;
the anaerobic sludge bed reactor is used for carrying out biochemical treatment on the glyphosate wastewater after oxidative decomposition;
the activated carbon filter tank is used for filtering sewage flowing out of the anaerobic sludge bed reactor;
the heat exchanger is used for carrying out heat exchange on the glyphosate wastewater to be oxidized and the glyphosate wastewater after oxidation;
and the heater is used for heating the glyphosate wastewater to be oxidized and an oxygen source.
2. The system of claim 1, wherein the micro-interface generator is a pneumatic micro-interface generator, the micro-interface generator is located in the glyphosate wastewater oxidizer, and the micro-interface generator is configured to crush oxygen to form micron-sized bubbles and output the micron-sized bubbles to the glyphosate wastewater oxidizer to mix with glyphosate wastewater to form a gas-liquid mixture after the micro-sized bubbles are crushed.
3. The system for treating wastewater generated in glyphosate production according to claim 2, wherein a stainless steel wire filter screen and a first pump are respectively arranged inside and outside the primary filter sedimentation tank, the first pump is used for conveying the glyphosate wastewater into the primary filter sedimentation tank, and the stainless steel wire filter screen is used for filtering large-particle impurities in the glyphosate wastewater.
4. The system for treating wastewater from glyphosate production according to claim 2, wherein the acidity regulating tank is communicated with the primary filter sedimentation tank and the heat exchanger, and an acid adding pipe is communicated with the acidity regulating tank and used for adding acid into the acidity regulating tank to reduce the pH value of glyphosate wastewater.
5. The system for treating glyphosate production wastewater according to claim 2, wherein the glyphosate wastewater oxidation tank is communicated with the acid regulating tank, a compressor is arranged at the side of the glyphosate wastewater oxidizer, the compressor is used for transmitting oxygen to the micro-interface generator, and a second pump is used for transferring the glyphosate wastewater after oxidative decomposition into the heat exchanger.
6. The system for treating glyphosate production wastewater according to claim 2, wherein the anaerobic sludge bed reactor is communicated with the heat exchanger, a vacuum device, a third pump body and a fourth pump body are arranged at the side part of the anaerobic sludge bed reactor, a biogas zone, a clear water zone, a filler zone and a sludge zone are arranged in the anaerobic sludge bed reactor from top to bottom, the vacuum device is used for maintaining an anaerobic environment in the anaerobic sludge bed reactor, and the third pump body and the fourth pump body are respectively used for discharging sewage and sludge in the anaerobic sludge bed reactor.
7. The system of claim 2, wherein the heater comprises:
the first heater is used for heating oxygen to be fed into the glyphosate wastewater oxidizer;
and the second heater is used for heating the glyphosate wastewater to enter the glyphosate wastewater oxidizer.
8. The system for treating glyphosate production wastewater according to claim 2, wherein the activated carbon filter tank is communicated with the anaerobic sludge bed reactor, and a plurality of layers of activated carbon particle plates are arranged in the activated carbon filter tank.
9. A glyphosate industrial wastewater treatment method using a glyphosate industrial wastewater treatment system of any one of claims 1 to 8, comprising the steps of:
step 1: the first pump body works to introduce external glyphosate wastewater into the primary filtering sedimentation tank, and large-particle impurities in the glyphosate wastewater are filtered by a stainless steel wire filter screen in the primary filtering sedimentation tank;
step 2: the glyphosate waste water after primary filtration in the step 1 enters an acid regulating pool under the action of gravity, and acid is added into the acid regulating pool through an acid adding pipe so as to reduce the pH value of the glyphosate waste water;
and step 3: the second pump body works, the glyphosate wastewater in the acid regulating pool is drained into the glyphosate wastewater oxidizer, the glyphosate wastewater is heated by the second heater and then enters the glyphosate wastewater oxidizer, the compressor works, oxygen heated by the first heater is transmitted into the micro-interface generator, the micro-interface generator works to crush the oxygen to form micron-sized bubbles, the micron-sized bubbles are output into the glyphosate wastewater oxidizer after the crushing is finished and are mixed with the glyphosate wastewater to form a gas-liquid mixture, and the oxygen and the glyphosate wastewater are subjected to oxidative decomposition reaction to oxidize and decompose macromolecular organic matters in the glyphosate wastewater into micromolecular substances;
and 4, step 4: the glyphosate waste water after oxidative decomposition is transmitted into a heat exchanger, the heat exchanger exchanges heat between the high-temperature waste water after oxidative decomposition in the glyphosate waste water oxidizer and the glyphosate waste water in an acid regulating tank to be fed into the glyphosate waste water oxidizer, and the high-temperature waste water after heat exchange is fed into an anaerobic sludge bed reactor after being cooled;
and 5: the anaerobic microorganisms in the packing area in the anaerobic sludge bed reactor continuously carry out biochemical decomposition on the glyphosate wastewater, the decomposed gas rises to a biogas area, the solid is settled to the sludge area, and the rest wastewater is kept in a clear water area;
step 6: and sewage and sludge in the anaerobic sludge bed reactor are discharged through the work of the third pump body and the fourth pump body, and the sewage is filtered and discharged through the activated carbon filter tank.
10. The method as set forth in claim 9, wherein the pH of the waste water from the acid adjusting tank is 4-5.5, the temperature in the waste water oxidizer is 180-210 ℃, and the pressure is 1-2 MPa.
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Application publication date: 20210709 |