CN106830492A - A kind of processing method of methoxy acrylic Pesticidal products waste water - Google Patents
A kind of processing method of methoxy acrylic Pesticidal products waste water Download PDFInfo
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- CN106830492A CN106830492A CN201710217270.1A CN201710217270A CN106830492A CN 106830492 A CN106830492 A CN 106830492A CN 201710217270 A CN201710217270 A CN 201710217270A CN 106830492 A CN106830492 A CN 106830492A
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- China
- Prior art keywords
- waste water
- processing method
- potassium
- methoxy acrylic
- pesticidal products
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Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 80
- 230000000361 pesticidal effect Effects 0.000 title claims abstract description 19
- 238000003672 processing method Methods 0.000 title claims abstract description 17
- 229910052939 potassium sulfate Inorganic materials 0.000 claims abstract description 39
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims abstract description 37
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 35
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 30
- 235000011151 potassium sulphates Nutrition 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 238000001704 evaporation Methods 0.000 claims abstract description 15
- 230000008020 evaporation Effects 0.000 claims abstract description 15
- 230000003647 oxidation Effects 0.000 claims abstract description 13
- 230000003197 catalytic effect Effects 0.000 claims abstract description 10
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims abstract description 10
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 8
- 238000005119 centrifugation Methods 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 3
- 239000003513 alkali Substances 0.000 claims description 24
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 20
- 239000007921 spray Substances 0.000 claims description 14
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 claims description 6
- WBGWGHYJIFOATF-UHFFFAOYSA-M potassium;methyl sulfate Chemical compound [K+].COS([O-])(=O)=O WBGWGHYJIFOATF-UHFFFAOYSA-M 0.000 claims description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 5
- 235000014413 iron hydroxide Nutrition 0.000 claims description 5
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 2
- 238000005189 flocculation Methods 0.000 claims description 2
- 230000016615 flocculation Effects 0.000 claims description 2
- FLTRNWIFKITPIO-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe] FLTRNWIFKITPIO-UHFFFAOYSA-N 0.000 claims description 2
- 239000013049 sediment Substances 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000001556 precipitation Methods 0.000 abstract 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 27
- 239000001103 potassium chloride Substances 0.000 description 14
- 235000011164 potassium chloride Nutrition 0.000 description 14
- 239000000047 product Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 12
- 150000003839 salts Chemical class 0.000 description 10
- 239000006227 byproduct Substances 0.000 description 9
- 239000002253 acid Substances 0.000 description 7
- 239000003814 drug Substances 0.000 description 7
- 235000011181 potassium carbonates Nutrition 0.000 description 7
- 239000002699 waste material Substances 0.000 description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
- 230000029219 regulation of pH Effects 0.000 description 6
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 235000015497 potassium bicarbonate Nutrition 0.000 description 3
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 3
- 239000011736 potassium bicarbonate Substances 0.000 description 3
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 3
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 150000003384 small molecules Chemical class 0.000 description 3
- 239000001117 sulphuric acid Substances 0.000 description 3
- 235000011149 sulphuric acid Nutrition 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000005660 chlorination reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- -1 hydrogen Iron oxide Chemical class 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229960003975 potassium Drugs 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 239000005784 Fluoxastrobin Substances 0.000 description 1
- 239000005800 Kresoxim-methyl Substances 0.000 description 1
- 239000005869 Pyraclostrobin Substances 0.000 description 1
- 239000005857 Trifloxystrobin Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- UFEODZBUAFNAEU-NLRVBDNBSA-N fluoxastrobin Chemical compound C=1C=CC=C(OC=2C(=C(OC=3C(=CC=CC=3)Cl)N=CN=2)F)C=1C(=N/OC)\C1=NOCCO1 UFEODZBUAFNAEU-NLRVBDNBSA-N 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- ZOTBXTZVPHCKPN-HTXNQAPBSA-N kresoxim-methyl Chemical compound CO\N=C(\C(=O)OC)C1=CC=CC=C1COC1=CC=CC=C1C ZOTBXTZVPHCKPN-HTXNQAPBSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- HZRSNVGNWUDEFX-UHFFFAOYSA-N pyraclostrobin Chemical compound COC(=O)N(OC)C1=CC=CC=C1COC1=NN(C=2C=CC(Cl)=CC=2)C=C1 HZRSNVGNWUDEFX-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- JBJWASZNUJCEKT-UHFFFAOYSA-M sodium;hydroxide;hydrate Chemical compound O.[OH-].[Na+] JBJWASZNUJCEKT-UHFFFAOYSA-M 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- ONCZDRURRATYFI-TVJDWZFNSA-N trifloxystrobin Chemical compound CO\N=C(\C(=O)OC)C1=CC=CC=C1CO\N=C(/C)C1=CC=CC(C(F)(F)F)=C1 ONCZDRURRATYFI-TVJDWZFNSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/02—Preparation of sulfates from alkali metal salts and sulfuric acid or bisulfates; Preparation of bisulfates
-
- 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
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F2101/10—Inorganic compounds
-
- 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
- C02F2101/40—Organic compounds containing sulfur
-
- 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
- C02F2103/343—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 pharmaceutical industry, e.g. containing antibiotics
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The present invention relates to a kind of processing method of methoxy acrylic Pesticidal products waste water, the described method comprises the following steps：Wastewater collection is simultaneously filtered；Sulfuric acid is added, pH value is adjusted, and inorganic potassium salt is converted into potassium sulfate；UV photochemical catalytic oxidations, make potassium salt be converted into potassium sulfate；Potassium hydroxide is added, pH value is adjusted, and neutralizes excessive sulfuric acid, being subsequently adding ferric trichloride carries out precipitation reaction；Filtering, removes flocculate；Multiple-effect evaporation simultaneously crystallizes centrifugation, isolated potassium sulfate solid, steam condensate (SC) and steams water and is back to workshop.Realize utilization of wastewater resource, wastewater zero discharge, with energy economy ＆ environment benefit higher.
Description
Technical field
The present invention relates to technical field of waste water processing, specifically, it is related to a kind of methoxy acrylic Pesticidal products
The processing method of waste water.
Background technology
Production methoxy acrylic Pesticidal products such as pyraclostrobin, Fluoxastrobin, kresoxim-methyl, trifloxystrobin etc., are produced
Raw waste water main component is：Active compound, potassium methyl sulfate, potassium carbonate, saleratus mixed salt, CODcr=30000-40000mg/
l。
For high-salt wastewater, the Processing tecchnics that current manufacturing enterprise generally uses for：The first step：Product is reclaimed in press filtration；The
Two steps, evaporate desalination：Steam water CODcr=5000-10000mg/l, it is necessary to further treatment after qualified discharge, mixed salt is used as danger
Dangerous waste commission disposal.
There is problems with conventional processes：
1) because waste water COD cr concentration is higher, the mixed salt for obtaining directly is evaporated without pretreatment can only be used as hazardous waste
Disposal, while greatly increasing cost of disposal, wastes useful resources.
2) steam water still containing organic matter higher, need to by after further treatment can qualified discharge, processing cost is higher,
And do not produce economic benefit.
The content of the invention
In order to solve the deficiency of prior art presence, it is an object of the invention to provide a kind of methoxy acrylic agriculture
The processing method of medicine product waste water, realizes the recycling of Coal Gas Washing Cycling Water saliferous high, and production potassium sulfate is used as byproduct
Sell, steam condensate (SC) and steam water and be back to workshop, tail gas qualified discharge after Alkali absorption does not produce secondary pollution, tool
There is good energy economy ＆ environment benefit.
To achieve the above object, the present invention provides a kind of processing method of methoxy acrylic Pesticidal products waste water,
Comprise the following steps：
1) wastewater collection and filter；
2) sulfuric acid is added, pH value is adjusted, and inorganic potassium salt is converted into potassium sulfate；
3) UV- photochemical catalytic oxidations, make potassium salt be converted into potassium sulfate；
4) potassium hydroxide is added, pH value is adjusted, and neutralizes excessive sulfuric acid, being subsequently adding ferric trichloride carries out flocculation sediment
Reaction；
5) filter, remove flocculate；
6) multiple-effect evaporation and centrifugation is crystallized, isolated potassium sulfate solid and steams water and is back to car steam condensate (SC)
Between.
Further, the step 1) in filtration step use duplex strainer.
Further, the step 2) in regulation pH value be 2.5-3.0.
Further, the step 2) in inorganic potassium salt be potassium carbonate and saleratus, reaction equation is as follows：
K2CO3+H2SO4→K2SO4+H2O+CO2↑
2KHCO3+H2SO4→K2SO4+2H2O+2CO2↑。
Further, the step 3) in potassium salt be potassium methyl sulfate, reaction equation is as follows：
R-H+HO·→R·+H2O
2K(CH3)SO4+3O2→K2SO4+2H2O+2CO2↑+H2SO4。
Further, the step 4) in regulation pH value be 6.0-7.0.
Further, the step 4) in reaction equation it is as follows：
H2SO4+2KOH→K2SO4+2H2O
3KOH+FeCl3→Fe(OH)3↓+3KCl。
Further, the step 5) in flocculate include the small organic molecule that can flocculate of iron hydroxide and small part.
Further, the step 2) and step 3) in reaction generation gas and the step 6) in evaporation process produce
Gas through Alkali absorption process.
Further, the Alkali absorption is carried out using two-stage spray column, and the alkali in the Alkali absorption is NaOH water
Solution or aqueous sodium carbonate.
Compared with prior art, the present invention has advantages below：
1) reclaim product process and traditional press filtration is replaced using duplex strainer, operation is easier, substantially improves site environment.
2) single potassium sulfate salt is changed into by potassium carbonate and saleratus mixed salt to waste water acid adjustment, using UV- photocatalytic-oxidations
Potassium methyl sulfate is changed into potassium sulfate by change technology, realizes the transformation of mixed salt in waste water to single salt, make originally as dangerous waste at
The mixed salt put being capable of resource recovery.
3) whole flow process wastewater zero discharge, realizes recycling economy purpose：Sylvite is reclaimed and sold as byproduct in waste water, female
Liquid set steams, and steam condensate (SC) and steams Water circulation in workshop, greatlys save water resource.
To sum up, the present invention provides a kind of processing method of methoxy acrylic Pesticidal products waste water, in realizing waste water
The recycling of high concentration saliferous high, to good waste water treatment effect, efficiently solve high cost that existing treatment technology is present,
Deficiency that is inefficient, producing a large amount of dangerous wastes.The purpose of waste water reclaiming, energy saving and water resource are realized, it is economical to be imitated with environmental protection
It is beneficial mutually unified.
Brief description of the drawings
Fig. 1 is the process chart of methoxy acrylic Pesticidal products wastewater treatment of the invention.
Specific embodiment
In order to preferably explain the present invention, below in conjunction with the accompanying drawings and specific embodiment the invention will be further described.
As shown in figure 1, methoxy acrylic Pesticidal products, 7.2%-7.5% containing 1.3%-1.5% in waste water
Potassium methyl sulfate, the saleratus of 4.8%-5.0%, the potassium carbonate of 1.4%-1.6%.
Embodiment 1
The first step, wastewater collection and is recovered by filtration product：Workshop produces 38 tons of waste water daily, and waste water enters wastewater collection
Tank, tank bottom is taper, and waste water pump discharge sets duplex strainer for product to be recovered by filtration, daily 0.5 ton of recyclable product, duplex
Filter sets pressure interlock control, when a pressure alarm high and switches another, it is to avoid block influence handling process continuous
Change, 37.5 tons of filtrate is produced daily, into second step treatment.
Second step, adjusts pH：Waste water is with 3.0m3/ h amounts are pumped into pH regulation tanks, while 98% sulfuric acid is added, according to quality
Flowmeter control acid and the ratio of waste water, sulphuric acid is 114kg/h, automatically adjusts pH=2.5, makes potassium carbonate in waste water
(45kg/h) and potassium hydrogen carbonate (145kg/h) reaction generation potassium sulfate (178kg/h), tail gas introduce alkali cleaning and spray through induced draught system
Drench tower treatment.
3rd step, UV- photochemical catalytic oxidations：The waste water of pH=2.5 is with 3.2m3/ h amounts pump into UV- photochemical catalytic oxidation techniques system
System, is pre-processed to waste water, and 27.5% hydrogen peroxide and 40% liquor ferri trichloridi, dosage are put into using automatic medicament feeding system
Respectively 1500ppm, 170ppm, are CO by organic matter degradation by the oxidation of hydroxyl radical free radical2、H2O and small molecule acid,
Potassium methyl sulfate (220kg/h) is oxidized generation potassium sulfate (128kg/h), and tail gas is introduced at alkali wash spray tower through induced draught system
Reason.
4th step, adjusts pH：Upper step waste water is with 3.3m3/ h amounts pump into pH regulation tanks, with 40% potassium hydroxide and waste water,
The ratio of potassium hydroxide solution and waste water is controlled according to mass flowmenter, 40% potassium hydroxide dosage is 270kg/h, automatic to adjust
Section makes wastewater pH=6.0, while unnecessary sulfuric acid (72kg/h) is reacted generation potassium sulfate (128kg/h), with UV- photocatalytic-oxidations
Change micro ferric trichloride (0.025kg/h) reaction generation iron hydroxide (0.015kg/h) and chlorination that automatic medicament feeding system is added
Potassium (0.035kg/h).
5th step, filtering and impurity removing：Small part flocculate (0.025kg/h) filtering of generation will be reacted, flocculate includes hydrogen
Iron oxide and the small organic molecule that can be flocculated on a small quantity.
6th step, multiple-effect evaporation and centrifugation：The waste water of the pH=6.0 after being processed through first five step is with 3.3m3/ h measures pump
Enter multi-effect evaporation system, the 434kg/h K of reaction generation are contained in waste water2SO4With 0.035kg/h KCl, waste water generation per ton
KCl 0.011kg, and waste water per ton contains K2SO4131.5kg, KCl only account for the 0.008% of total salt amount, therefore the KCl for producing does not influence
By-product K2SO4Quality.Under vacuum conditions, supersaturated potassium sulfate solution is concentrated to give by one, two, triple effect evaporator, then
Into crystallization kettle crystallization, then it is centrifuged, obtains potassium sulfate (490kg/h, content >=85%) sold as byproduct, steam
Condensed water and steam water (2.4m3/ h, CODcr≤500mg/1, NH3- N≤30mg/l) workshop is back to, evaporation process is produced
Not coagulate tail gas through induced draught system introduce alkali wash spray tower process.
Alkali in the alkali wash spray tower treatment being related in step 2, three, six is the sodium hydrate aqueous solution of 2-5%.
Embodiment 2
The first step, with embodiment 1.
Second step, adjusts pH：Waste water is with 3.2m3/ h amounts are pumped into pH regulation tanks, while 80% Waste Sulfuric Acid is added, according to matter
Amount flowmeter control acid and the ratio of waste water, sulphuric acid is 150kg/h, automatically adjusts pH=2.8, makes potassium carbonate in waste water
(46kg/h) and potassium hydrogen carbonate (150kg/h) reaction generation potassium sulfate (190kg/h), tail gas introduce alkali cleaning and spray through induced draught system
Drench tower treatment.
3rd step, UV- photochemical catalytic oxidations：The waste water of pH=2.8 is with 3.3m3/ h amounts pump into UV- photochemical catalytic oxidation techniques system
System, is pre-processed to waste water, and 30% hydrogen peroxide and 35% liquor ferri trichloridi, dosage point are put into using automatic medicament feeding system
Not Wei 1450ppm, 200ppm, by organic matter degradation be CO by the oxidation of hydroxyl radical free radical2、H2O and small molecule acid, first
Base potassium sulfate (223kg/h) is oxidized generation potassium sulfate (130kg/h), and tail gas introduces alkali wash spray tower and processes through induced draught system.
4th step, adjusts pH：Upper step waste water is with 3.3m3/ h amounts pump into pH regulation tanks, with 38% potassium hydroxide and waste water,
The ratio of potassium hydroxide solution and waste water is controlled according to mass flowmenter, 38% potassium hydroxide dosage is 290kg/h, automatic to adjust
Section makes wastewater pH=6.5, while unnecessary sulfuric acid (94kg/h) is reacted generation potassium sulfate (130kg/h), with UV- photocatalytic-oxidations
Change micro ferric trichloride (0.026kg/h) reaction generation iron hydroxide (0.017kg/h) and chlorination that automatic medicament feeding system is added
Potassium (0.036kg/h).
5th step, filtering and impurity removing：Small part flocculate (0.026kg/h) filtering of generation will be reacted, flocculate includes hydrogen
Iron oxide and the small organic molecule that can be flocculated on a small quantity.
6th step, multiple-effect evaporation and centrifugation：The waste water of the pH=6.5 after being processed through first five step is with 3.3m3/ h measures pump
Enter multi-effect evaporation system, the 450kg/h K of reaction generation are contained in waste water2SO4With 0.036kg/h KCl, waste water generation per ton
KCl 0.011kg, and waste water per ton contains K2SO4136.4kg, KCl only account for the 0.008% of total salt amount, therefore the KCl for producing does not influence
By-product K2SO4Quality.Under vacuum conditions, supersaturated potassium sulfate solution is concentrated to give by one, two, triple effect evaporator, then
Into crystallization kettle crystallization, then it is centrifuged, obtains potassium sulfate (498kg/h, content >=85%) sold as byproduct, steam
Condensed water and steam water (2.5m3/ h, CODcr≤500mg/l, NH3- N≤30mg/l) workshop is back to, evaporation process is produced
Not coagulate tail gas through induced draught system introduce alkali wash spray tower process.
Alkali in the alkali wash spray tower treatment being related in step 2, three, six is the aqueous sodium carbonate of 5-15%.
Embodiment 3
The first step, with embodiment 1.
Second step, adjusts pH：Waste water is with 3.2m3/ h amounts are pumped into pH regulation tanks, while 98% sulfuric acid is added, according to quality
Flowmeter control acid and the ratio of waste water, sulphuric acid is 125kg/h, automatically adjusts pH=3.0, makes potassium carbonate in waste water
(48kg/h) and potassium hydrogen carbonate (152kg/h) reaction generation potassium sulfate (193kg/h), tail gas introduce alkali cleaning and spray through induced draught system
Drench tower treatment.
3rd step, UV- photochemical catalytic oxidations：The waste water of pH=3.0 is with 3.3m3/ h amounts pump into UV- photochemical catalytic oxidation techniques system
System, is pre-processed to waste water, and 30% hydrogen peroxide and 50% liquor ferri trichloridi, dosage point are put into using automatic medicament feeding system
Not Wei 1400ppm, 150ppm, by organic matter degradation be CO by the oxidation of hydroxyl radical free radical2、H2O and small molecule acid, first
Base potassium sulfate (225kg/h) is oxidized generation potassium sulfate (131kg/h), and tail gas introduces alkali wash spray tower and processes through induced draught system.
4th step, adjusts pH：Upper step waste water is with 3.3m3/ h amounts pump into pH regulation tanks, with 40% potassium hydroxide and waste water,
The ratio of potassium hydroxide solution and waste water is controlled according to mass flowmenter, 40% potassium hydroxide dosage is 280kg/h, automatic to adjust
Section makes wastewater pH=7.0, while unnecessary sulfuric acid (74kg/h) is reacted generation potassium sulfate (131kg/h), with UV- photocatalytic-oxidations
Change micro ferric trichloride (0.03kg/h) reaction generation iron hydroxide (0.02kg/h) and potassium chloride that automatic medicament feeding system is added
(0.04kg/h)。
5th step, filtering and impurity removing：Small part flocculate (0.03kg/h) filtering of generation will be reacted, flocculate includes hydrogen-oxygen
Change iron and the small organic molecule that can be flocculated on a small quantity.
6th step, multiple-effect evaporation and centrifugation：The waste water of the pH=7.0 after being processed through first five step is with 3.3m3/ h measures pump
Enter multi-effect evaporation system, the 455kg/h K of reaction generation are contained in waste water2SO4With 0.04kg/h KCl, waste water generation KCl per ton
0.012kg, and waste water per ton contains K2SO4142kg, KCl only account for the 0.008% of total salt amount, therefore the KCl for producing does not influence by-product
K2SO4Quality.Under vacuum conditions, supersaturated potassium sulfate solution is concentrated to give by one, two, triple effect evaporator, subsequently into
Crystallization kettle is crystallized, then is centrifuged, and obtains potassium sulfate (510kg/h, content >=85%) sold as byproduct, steam condensation
Water and steam water (2.5m3/ h, CODcr≤500mg/l, NH3- N≤30mg/l) workshop is back to, evaporation process is produced not
Solidifying tail gas introduces alkali wash spray tower and processes through induced draught system.
Alkali in the alkali wash spray tower treatment being related in step 2, three, six is the sodium hydrate aqueous solution of 5-10%.
Embodiment 4
Present invention process is compared with conventional processes, with embodiment 1-3 mean consumptions as foundation, it is comprehensively imitated
Benefit is analyzed, as a result as shown in table 1.
The comprehensive benefit analysis of table 1 (press the conversion of ton waste water)
| Processing procedure | Conventional processes | Present invention process |
| Product is recovered by filtration | Press filtration | Duplex is filtered |
| Regulation pH | / | |
| UV- photochemical catalytic oxidations | / | - 100 yuan |
| Regulation pH | / | 40%KOH 83.4kg, -83 yuan |
| Filtering and impurity removing | / | / |
| Multiple-effect evaporation and centrifugation | - 180 yuan | - 150 yuan |
| Steam water process | - 100 yuan | Save water 750kg, 1.7 yuan |
| Dangerous waste treatment/byproduct is reclaimed | 220kg dangerous wastes, -660 yuan | |
| Integrated cost/benefit | - 940 yuan | - 40.3 yuan |
According to the analysis result that table 1 is obtained, according to year treatment 1.2 ten thousand tons of meters of waste water, present invention process is compared with conventional process side
Cost-saved 1079.6 ten thousand yuan of formula, realizes the purpose of waste water reclaiming, energy saving and water resource.
Although some exemplary embodiments of the invention have shown and described, those skilled in the art should know
Dawn, without departing from the principles and spirit of the present invention, change can be made to these exemplary embodiments, it is of the invention
Scope is limited by claim and its equivalent.
Claims (10)
1. a kind of processing method of methoxy acrylic Pesticidal products waste water, the described method comprises the following steps：
1) wastewater collection and filter；
2) sulfuric acid is added, pH value is adjusted, and inorganic potassium salt is converted into potassium sulfate；
3) UV- photochemical catalytic oxidations, make potassium salt be converted into potassium sulfate；
4) potassium hydroxide is added, pH value is adjusted, and excessive sulfuric acid is neutralized, being subsequently adding ferric trichloride, to carry out flocculation sediment anti-
Should；
5) filter, remove flocculate；
6) multiple-effect evaporation and centrifugation is crystallized, isolated potassium sulfate solid and steams water and is back to workshop steam condensate (SC).
2. the processing method of methoxy acrylic Pesticidal products waste water according to claim 1, it is characterised in that institute
State step 1) in filtration step use duplex strainer.
3. the processing method of methoxy acrylic Pesticidal products waste water according to claim 1, it is characterised in that institute
State step 2) in regulation pH value be 2.5-3.0.
4. the processing method of methoxy acrylic Pesticidal products waste water according to claim 1, it is characterised in that institute
State step 2) in inorganic potassium salt for potassium carbonate and saleratus, reaction equation is as follows：
K2CO3+H2SO4→K2SO4+H2O+CO2↑
2KHCO3+H2SO4→K2SO4+2H2O+2CO2↑。
5. the processing method of methoxy acrylic Pesticidal products waste water according to claim 1, it is characterised in that institute
State step 3) in potassium salt for potassium methyl sulfate, reaction equation is as follows：
2K(CH3)SO4+3O2→K2SO4+2H2O+2CO2↑+H2SO4。
6. the processing method of methoxy acrylic Pesticidal products waste water according to claim 1, it is characterised in that institute
State step 4) in regulation pH value be 6.0-7.0.
7. the processing method of methoxy acrylic Pesticidal products waste water according to claim 1, it is characterised in that institute
State step 4) in reaction equation it is as follows：
H2SO4+2KOH→K2SO4+2H2O
3KOH+FeCl3→Fe(OH)3↓+3KCl。
8. the processing method of methoxy acrylic Pesticidal products waste water according to claim 1, it is characterised in that institute
State step 5) in flocculate include the small organic molecule that can flocculate of iron hydroxide and small part.
9. the processing method of methoxy acrylic Pesticidal products waste water according to claim 1, it is characterised in that institute
State step 2) and step 3) in reaction generation gas and the step 6) in evaporation process produce gas through Alkali absorption process.
10. the processing method of methoxy acrylic Pesticidal products waste water according to claim 9, it is characterised in that
The Alkali absorption is carried out using two-stage spray column, and the alkali in the Alkali absorption is sodium hydrate aqueous solution or aqueous sodium carbonate.
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| CN109761423A (en) * | 2019-01-24 | 2019-05-17 | 安徽广信农化股份有限公司 | A kind of process for treating waste liquor synthesizing Fluoxastrobin |
| CN110921901A (en) * | 2019-12-07 | 2020-03-27 | 衡水均凯化工有限公司 | Treatment method of alkaline waste liquid |
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