CN104671603B - Treatment method of PMIDA wastewater produced by using IDA method - Google Patents
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Abstract
The invention discloses a method for PMIDA wastewater produced by using an IDA method. The method comprises the following steps: regulating pH of wastewater of PMIDA mother liquid condensate to be 12 by using quick lime and liquid caustic soda; introducing steam and heating to be at 50-60 DEG C; performing alkali condensation and introducing into a biological water distributing tank; regulating pH of secondary washing water to be 1-3 and performing a micro-electrolytic reaction; adding hydrogen peroxide and performing catalytic oxidization in the presence of a surface catalyst; regulating pH to be 7.5-8; pumping wastewater into a biochemical system; using a strain which can be tolerant to 1-3 percent of salinity; degrading organic pollutants by using an ABR anaerobic I/continuous aerobic I/ABR II/continuous aerobic II method and simultaneously turning organophosphorus into orthophosphate; precipitating sludge and transporting outwards; enabling liquid supernatant to flow into a phosphorous removal reaction tank; adding coagulants and lime to be fully subjected to reaction to enable mixed liquid to flow into a phosphorous removal precipitation tank; enabling the liquid supernatant to reach the discharge standard; transporting outwards the sludge. The method is low in operation cost; effluent water is subjected to biochemical treatment so that COD completely reaches the discharge standard; after chemical phosphorous removal, the total phosphorous reaches the discharge standard, so that the pollutants are reduced to the lowest level, the chromaticity is greatly reduced, and the method has a good environmental effect.
Description
Technical field
The present invention relates to a kind of sewage water treatment method, specifically a kind of method of process ida method N-(phosphonomethyl) iminodiacetic acid wastewater.
Background technology
Ida method PMIDA production technology is to hydrolyze prepared iminodiacetic acid in the basic conditions by diacetonitrile.Imino group
After oxalic acid and hydrochloric acid, phosphorous acid, formaldehyde are condensed in a kettle., decrease temperature crystalline filtering drying obtains product.
The waste water that PMIDA production technology produces mainly in iminodiacetic acid and phosphorous acid after condensation reaction, generate
The PMIDA product of slightly solubility.Due to containing plurality of raw materials and side reaction product in product, PMIDA needs to carry out three washings,
, as PMIDA mother liquor, second waste water with third time washing is as secondary jean-washing wastewater for first time wash water.
Wherein secondary this waste water of wash water contains PMIDA (0.3%), phosphorous acid, hydrochloric acid, formaldehyde and the imido of higher concentration
Base oxalic acid and sodium chloride, belong to acid stronger complicated pollutant waste water.Poisonous containing suppress growth of microorganism in waste water
Material, biodegradability extreme difference, now waste water salinity have 3%, belong to bio-refractory organic wastewater.Need to carry out the improvement of waste water
The formaldehyde of 3.0～5.0% mass concentrations is mainly contained, its concentration is 30000～50000mg/ in PMIDA mother liquor
L, belongs to ultrahigh concentration formaldehyde waste water, saliferous 20～25%, PMIDA, hydrochloric acid.This waste water, by way of evaporating desalination, removes
Salinity in waste water, evaporation condensate carries out waste water treatment.Waste water condensate liquid still also has the formaldehyde about 30000- of high level
50000mg/l.
PMIDA mother liquor condensate liquid and PMIDA secondary jean-washing wastewater feature contain high-concentration formaldehyde, PMIDA, phosphorous acid,
The difficult point restricting such wastewater treatment is the formaldehyde containing 30000-50000mg/l in 1, waste water, when waste water concentration of formaldehyde is high
When 135～175mg/l, there is inhibitory action to aerobic degradation microorganism, when concentration of formaldehyde is higher than 100mg/l, anaerobism is dropped
Solution microorganism has inhibitory action.Therefore, biochemical treatment can just be carried out after PARA FORMALDEHYDE PRILLS(91,95) is removed.2nd, the organic phosphorus concentration in waste water
Higher, water outlet total phosphorus is up to standard, then need, after a series of handling process can make organophosphor be converted into inorganic phosphate, to lead to
Cross the form of precipitation, remove total phosphorus.3rd, the tds concentration of secondary wash water still has 30000mg/l, using traditional activated sludge process,
Need 3 times of dilution water, increased sewage discharge amount and treating capacity.
The above-mentioned process showing ida method N-(phosphonomethyl) iminodiacetic acid wastewater handling process is required to meet preferential PARA FORMALDEHYDE PRILLS(91,95) completely, disappears
Except the inhibitory effect to subsequent biochemical.Rational materialization and biochemical combination technique, realize organophosphor and can discharge completely being converted into no
Pole phosphate.Biochemical technology is selected to tolerate the bacterial classification technology of tds30000mg/l.
Content of the invention
Goal of the invention: present invention aims to the deficiencies in the prior art, provide that a kind of operating cost is low, power consumption
Little, the method for energy effective process ida method N-(phosphonomethyl) iminodiacetic acid wastewater.
Technical scheme: in order to reach goal of the invention, the invention provides a kind of method of process ida method N-(phosphonomethyl) iminodiacetic acid wastewater,
Comprise the following steps:
A kind of method of process ida method N-(phosphonomethyl) iminodiacetic acid wastewater is it is characterised in that the method comprising the steps of:
(1) ida method PMIDA mother liquor condensate liquid is pumped into alkaline condensation pond, plus quick lime and alkaline reagent adjust ph10～
12, logical vapour heating to 50～60 DEG C, reaction time 2～3h, period need to supplement alkaline reagent maintain waste water ph10～12, wherein
8～12g quick lime is added in every 1l mother liquor condensate liquid；
(2) gained waste water is passed through sedimentation basin together with lime, and supernatant is discharged, and lime is collected and is back to alkaline condensation pond；
(3) secondary for ida method PMIDA wash water is pumped into iron-carbon micro-electrolysis pond, ph to 1～3 adjusted by Plus acidic reagent；
(4) by step (3) gained waste water with alkaline reagent adjust ph be more than 7, then plus coagulant, be passed through coagulative precipitation tank, on
Clear liquid is discharged, separately outward transport is processed mud, adds 5～10mg coagulant in every 1l waste water；
(5) step (4) supernatant is passed through catalysis intake pool, ph to 4～6 adjusted by Plus acidic reagent；
(6) add the hydrogen peroxide that concentration is 20～30% in step (5) gained waste water, then mixed water body is pumped into and urge
Change in oxidizing tower, waste water occurs catalysis oxidation, during reaction with hydrogen peroxide by contacting mixing with fixing surface catalyst in tower
Between be 1.5～2.5h；
(7) step (2) supernatant and the mixing of step (6) gained waste water are passed through biochemical distribution reservoir, control water inlet salinity little
In 3%, and hydro-oxidation sodium solution adjusts ph to 7.5～8；
(8) control 25～35 DEG C of water temperature and add salt tolerant compound bacteria in water body, carry out one-level anaerobic biochemical reaction 24～
48 hours, destroy the structure of useless Organic substance in water, partial organic substances of degrading；
(9) water body is continued to be passed through reaction tank, adjusts ph to 7～9, control 25～35 DEG C of addition salt tolerant compound bacteria of water temperature,
Carry out one-level aerobic reaction 24～48 hours, control the dissolved oxygen in Aerobic Pond to be 2～4mg/l；.
(10) control 25～35 DEG C of water temperature and add salt tolerant compound bacteria in water body, carry out secondary anaerobic biochemical reaction 24～
48 hours, destroy the structure of useless Organic substance in water, partial organic substances of degrading；
(11) water body is continued to be passed through reaction tank, adjusts ph to 7～9, control 25～35 DEG C of addition salt tolerant compound bacteria of water temperature,
Carry out two grades of aerobic reactions 24～48 hours, control the dissolved oxygen in Aerobic Pond to be 2～4mg/l；
(12) step (11) gained waste water is passed through second pond together with mud mixed liquid, supernatant is discharged, mud is transported outward
Process；
(13) step (12) gained supernatant is passed through dephosphorization reaction tank, plus lime and coagulant, add in every l supernatant
1000～3500mg lime, 0.005～0.01mg coagulant；
(14) step (13) gained waste water is passed through dephosphorization sedimentation basin together with mud mixed liquid, supernatant qualified discharge,
Separately outward transport is processed mud.
Wherein, above-mentioned acid reagent is hydrochloric acid or sulfuric acid, and alkaline reagent is NaOH.
Wherein, in above-mentioned steps (2), the mass ratio of waste water and quick lime is 80～120:1.
Wherein, in upper described step (6), the volume ratio of waste water and hydrogen peroxide is 50～100:1.
Wherein, the preparation process of the surface catalyst in above-mentioned steps (6) is: the nitric acid being 1～5% with percentage by weight
Copper liquor and manganese sulfate solution Immesion active carbon that percentage by weight is 1～5%, after 36～72 hours, are dried, then with 500
～600 DEG C of roasting shapings.
Wherein, the anaerobic bacteria in above-mentioned steps (8) is Bacteroides, butyric acid vibrios Pseudomonas, Eubacterium, Bifidobacterium
Genus, syntrophism zygosaccharomyces, dark Bacillus, methane phase Bacillus, Methanococcus, methanogenic thrix belong to, methane phase germ belongs to
Or methane phase Sarcina.
Wherein, above-mentioned anaerobic biological and salt-durable microbe bacterium used by aerobic biochemical, can be by being similar to Chinese patent
Cn101477105 methods described, screening, domestication in high-salt wastewater obtains salt tolerant bacteria strain it is also possible to obtain by purchase.Existing
There are Facultative Halophiles including but not limited to such as: gluconobacter oxydans (gluconobacter oxydans), lactobacillus fermenti
(lactobacillus fermentum), Lactobacillus brevis (lactobacillus brevis), micrococcus luteus
(micrococcus leutus), halo micrococcus luteus (also referred to as Micrococcus halobius, micrococcus halobius), product alkali are false single
Born of the same parents bacterium (pseudomonas alcaligenes), the golden pseudomonad (pseudomonas aureofaciens) of cause, greenery are false single
Born of the same parents bacterium (pseudomonas chlororaphis), nitrate reductase pseudomonad (pseudomonas nitroreducens), core
Flavine pseudomonad (pseudomonas riboflavina), pseudomonas putida (pseudomonas putida) and agility
Pseudomonad (pseudomonas facilis).
Wherein, above-mentioned coagulant is aluminium polychloride or poly- third acetamide.
Beneficial effect: PMIDA mother liquor condensate liquid of the present invention employs alkaline condensation pretreatment formaldehyde, secondary wash water adopts
Iron-carbon micro-electrolysis-catalysis oxidation pretreatment.After both pretreatments, mixing carries out biochemistry-chemical precipitation integrated processes process, has
Following advantage
1st, PMIDA mother liquor condensate liquid middle and high concentration formaldehyde obtains more than 99.9% removal, is all condensed into polysaccharide material.
Reduce the bio-toxicity of waste water, improve b/c ratio；
2nd, secondary wash water adopts the combined pretreatment technique of iron-carbon micro-electrolysis and catalysis oxidation, can be at normal temperatures and pressures to useless
The removal effects such as the difficult degradation organic phosphorus compound in water substantially, and make most of organophosphor be changed into Phos, are significantly cutting
Subtract and improve biodegradability while cod, be that subsequent biochemical process creates condition.For the property of N-(phosphonomethyl) iminodiacetic acid wastewater, give up
Water concentration is high, complicated component, and contains the reluctant pollutant of multiple common process, therefore, is well suited for using iron-carbon micro-electrolysis
To process with triphase catalytic oxidation combination method.Reaction condition is gentle, high degree of automation, and easy and simple to handle, equipment investment is few；
3rd, the use of catalyst, improves oxidation efficiency, overcomes the selectivity to oxidation operation, double to ida method sweet
Organism P wastewater more than 60%, especially to difficult degradation for the clearance of phosphine waste water cod；
4th, the biochemical system that the present invention adopts is the aerobic-abr of abr-continuously-continuous aerobic combination system, joint
Remove cod and total phosphorus, waste water now under anaerobic, is degraded further by anaerobic bacteria, organophosphor changes Phos, and leads to
Cross metabolism and absorb a part of phosphorus.After anaerobism, waste water enters aerobic process, by control aeration rate, the reaction time, sludge age Lai
Smoothly completing of strengthening polyP bacteria excess ingestion phosphorus, carries out biological phosphate-eliminating, and the cod that simultaneously degrades；
5th, the present invention adopts the anaerobic-aerobic biochemical system of two-stage, specific order, makes organic matter degradation in waste water thorough
Bottom, all release is transformed into orthophosphoric acid salt to organophosphor；
6th, on the basis of biological phosphate-eliminating, further reinforced phosphor-removing effect, by chemical precipitation method, remove waste water further
The phosphorus of middle participation, makes the complete qualified discharge of water outlet；
7th, whole set process is effective, flexible and convenient operation, can reach cod and total phosphorus for ida method N-(phosphonomethyl) iminodiacetic acid wastewater
Qualified discharge.
Specific embodiment
Embodiment 1:
Ida method PMIDA mother liquor condensate liquid is pumped into alkaline condensation pond, plus quick lime and alkaline reagent adjust ph10, logical steam
It is heated up to 50 DEG C, reaction time 2h, period need to be supplemented alkaline reagent and be maintained waste water ph10, add in wherein every 1l mother liquor condensate liquid
8g quick lime；Gained waste water is passed through sedimentation basin together with lime, and supernatant discharge is stand-by, and lime is collected and is back to alkaline condensation
Pond.
Secondary for ida method PMIDA wash water is pumped into iron-carbon micro-electrolysis pond, ph to 1 adjusted by Plus acidic reagent；Gained waste water adds alkali
Property reagent adjust ph to be more than 7, then plus coagulant, add 5mg coagulant in every 1l waste water, be passed through coagulative precipitation tank, supernatant discharges,
Separately outward transport is processed mud, and supernatant is passed through catalysis intake pool, and ph to 4 adjusted by Plus acidic reagent, and in gained waste water, addition concentration is
Then mixed water body is pumped in catalysis oxidizing tower by 20～30% hydrogen peroxide, and waste water and hydrogen peroxide are by fixing with tower
, there is catalysis oxidation in surface catalyst contact mixing, the reaction time is 1.5h；
The supernatant of above-mentioned two step gained, waste water mixing are passed through biochemical distribution reservoir, hydro-oxidation sodium solution adjusts ph extremely
7.5；Control 25 DEG C of water temperature and add salt tolerant compound bacteria in water body, carry out one-level anaerobic biochemical reaction 24 hours, destroy waste water
The structure of middle organic matter, partial organic substances of degrading；Water body is continued to be passed through reaction tank, adjusts ph to 7, control 25 DEG C of additions of water temperature
Salt tolerant compound bacteria, carries out one-level aerobic reaction 24 hours, controls the dissolved oxygen in Aerobic Pond to be 2mg/l；Control 25 DEG C of water temperature simultaneously
Add salt tolerant compound bacteria in water body, carry out secondary anaerobic biochemical reaction 24 hours, destroy the structure of useless Organic substance in water, degraded
Partial organic substances；Water body is continued to be passed through reaction tank, adjusts ph to 7, control 25 DEG C of addition salt tolerant compound bacteria of water temperature, carry out two grades
Aerobic reaction 24 hours, controls the dissolved oxygen in Aerobic Pond to be 2mg/l；Gained waste water is passed through two together with mud mixed liquid sink
Pond, supernatant is discharged, and mud outward transport is processed, and gained supernatant is passed through dephosphorization reaction tank, plus lime and coagulant, every 1l supernatant
Middle addition 1000mg lime, 0.005mg coagulant, gained waste water is passed through dephosphorization sedimentation basin, supernatant together with mud mixed liquid
Qualified discharge, separately outward transport is processed mud.
Embodiment 2:
Ida method PMIDA mother liquor condensate liquid is pumped into alkaline condensation pond, plus quick lime and alkaline reagent adjust ph11, logical steam
It is heated up to 55 DEG C, in the reaction time 2.5, period need to be supplemented alkaline reagent and be maintained waste water ph11, add in wherein every 1l mother liquor condensate liquid
Enter 10g quick lime；Gained waste water is passed through sedimentation basin together with lime, and supernatant discharge is stand-by, and lime is collected and is back to alkalescence contracting
Close pond.
Secondary for ida method PMIDA wash water is pumped into iron-carbon micro-electrolysis pond, ph to 2 adjusted by Plus acidic reagent；Gained waste water adds alkali
Property reagent adjust ph to be more than 7, then plus coagulant, add 8mg coagulant in every 1l waste water, be passed through coagulative precipitation tank, supernatant discharges,
Separately outward transport is processed mud, and supernatant is passed through catalysis intake pool, and ph to 5 adjusted by Plus acidic reagent, and in gained waste water, addition concentration is
Then mixed water body is pumped in catalysis oxidizing tower by 20～30% hydrogen peroxide, and waste water and hydrogen peroxide are by fixing with tower
, there is catalysis oxidation in surface catalyst contact mixing, the reaction time is 2h；
The supernatant of above-mentioned two step gained, waste water mixing are passed through biochemical distribution reservoir, hydro-oxidation sodium solution adjusts ph extremely
7.5；Control 30 DEG C of water temperature and add salt tolerant compound bacteria in water body, carry out one-level anaerobic biochemical reaction 36 hours, destroy waste water
The structure of middle organic matter, partial organic substances of degrading；Water body is continued to be passed through reaction tank, adjusts ph to 8, control 30 DEG C of additions of water temperature
Salt tolerant compound bacteria, carries out one-level aerobic reaction 36 hours, controls the dissolved oxygen in Aerobic Pond to be 3mg/l；Control 30 DEG C of water temperature simultaneously
Add salt tolerant compound bacteria in water body, carry out secondary anaerobic biochemical reaction 36 hours, destroy the structure of useless Organic substance in water, degraded
Partial organic substances；Water body is continued to be passed through reaction tank, adjusts ph to 8, control 30 DEG C of addition salt tolerant compound bacteria of water temperature, carry out two grades
Aerobic reaction 36 hours, controls the dissolved oxygen in Aerobic Pond to be 3mg/l；Gained waste water is passed through two together with mud mixed liquid sink
Pond, supernatant is discharged, and mud outward transport is processed, and gained supernatant is passed through dephosphorization reaction tank, plus lime and coagulant, every 1l supernatant
Middle addition 2000mg lime, 0.008mg coagulant, gained waste water is passed through dephosphorization sedimentation basin, supernatant together with mud mixed liquid
Qualified discharge, separately outward transport is processed mud.
Embodiment 3:
Ida method PMIDA mother liquor condensate liquid is pumped into alkaline condensation pond, plus quick lime and alkaline reagent adjust ph12, logical steam
It is heated up to 60 DEG C, reaction time 3h, period need to be supplemented alkaline reagent and be maintained waste water ph12, add in wherein every 1l mother liquor condensate liquid
12g quick lime；Gained waste water is passed through sedimentation basin together with lime, and supernatant discharge is stand-by, and lime is collected and is back to alkaline condensation
Pond.
Secondary for ida method PMIDA wash water is pumped into iron-carbon micro-electrolysis pond, ph to 3 adjusted by Plus acidic reagent；Gained waste water adds alkali
Property reagent adjust ph to be more than 7, then plus coagulant, add 10mg coagulant in every 1l waste water, be passed through coagulative precipitation tank, supernatant is arranged
Go out, separately outward transport is processed mud, supernatant is passed through catalysis intake pool, and ph to 6 adjusted by Plus acidic reagent, adds concentration in gained waste water
Then mixed water body is pumped in catalysis oxidizing tower by the hydrogen peroxide for 20～30%, and waste water and hydrogen peroxide are by fixing with tower
Surface catalyst contact mixing, occur catalysis oxidation, the reaction time be 2.5h；
The supernatant of above-mentioned two step gained, waste water mixing are passed through biochemical distribution reservoir, hydro-oxidation sodium solution adjusts ph extremely
8；Control 35 DEG C of water temperature and add salt tolerant compound bacteria in water body, carry out one-level anaerobic biochemical reaction 48 hours, destroy in waste water
The structure of organic matter, partial organic substances of degrading；Water body is continued to be passed through reaction tank, adjusts ph to 9, control 35 DEG C of additions of water temperature resistance to
Salt compound bacteria, carries out one-level aerobic reaction 48 hours, controls the dissolved oxygen in Aerobic Pond to be 4mg/l；Control 35 DEG C of water temperature and to
Add salt tolerant compound bacteria in water body, carry out secondary anaerobic biochemical reaction 48 hours, destroy the structure of useless Organic substance in water, degraded portion
Divide organic matter；Water body is continued to be passed through reaction tank, adjusts ph to 9, control 35 DEG C of addition salt tolerant compound bacteria of water temperature, carry out two grades good
Oxygen reacts 48 hours, controls the dissolved oxygen in Aerobic Pond to be 4mg/l；Gained waste water is passed through two together with mud mixed liquid sink
Pond, supernatant is discharged, and mud outward transport is processed, and gained supernatant is passed through dephosphorization reaction tank, plus lime and coagulant, every 1l supernatant
Middle addition 3500mg lime, 0.01mg coagulant, gained waste water is passed through dephosphorization sedimentation basin together with mud mixed liquid, and supernatant reaches
Mark discharge, separately outward transport is processed mud.
Claims (7)
1. a kind of method of process ida method N-(phosphonomethyl) iminodiacetic acid wastewater is it is characterised in that the method comprising the steps of:
(1) ida method PMIDA mother liquor condensate liquid is pumped into alkaline condensation pond, plus ph10 ~ 12 adjusted by quick lime and alkaline reagent, lead to and steam
Vapour is heated up to 50 ~ 60 DEG C, reaction time 2 ~ 3h, and period need to be supplemented alkaline reagent and be maintained waste water ph10 ~ 12, and wherein every 1l mother liquor is cold
8 ~ 12g quick lime is added in lime set；
(2) gained waste water is passed through sedimentation basin together with white lime, and supernatant is discharged, and lime is collected and is back to alkaline condensation pond；
(3) secondary for ida method PMIDA wash water is pumped into iron-carbon micro-electrolysis pond, ph to 1 ~ 3 adjusted by Plus acidic reagent；
(4) by step (3) gained waste water with alkaline reagent adjust ph be more than 7, then plus coagulant, be passed through coagulative precipitation tank, supernatant
Discharge, separately outward transport is processed mud, adds 5 ~ 10mg coagulant in every 1l waste water；
(5) step (4) supernatant is passed through catalysis intake pool, ph to 4 ~ 6 adjusted by Plus acidic reagent；
(6) add the hydrogen peroxide that concentration is 20 ~ 30% in step (5) gained waste water, then mixed water body is pumped into catalysis oxidation
In tower, waste water with hydrogen peroxide by contacting mixing, generation catalysis oxidation, reaction time with fixing surface catalyst in tower is
1.5~2.5h；
(7) step (2) supernatant and the mixing of step (6) gained waste water are passed through biochemical distribution reservoir, control water inlet salinity to be less than 3%,
And hydro-oxidation sodium solution adjusts ph to 7.5 ~ 8；
(8) control 25～35 DEG C of water temperature and add salt tolerant compound bacteria in water body, carry out one-level anaerobic biochemical reaction 24 ~ 48 little
When, destroy the structure of useless Organic substance in water, partial organic substances of degrading；
(9) water body is continued to be passed through reaction tank, adjust ph to 7 ~ 9, control 25～35 DEG C of addition salt tolerant compound bacteria of water temperature, carry out one
Level aerobic reaction 24 ~ 48 hours, controls the dissolved oxygen in Aerobic Pond to be 2 ~ 4mg/l；
(10) control 25～35 DEG C of water temperature and add salt tolerant compound bacteria in water body, carry out secondary anaerobic biochemical reaction 24 ~ 48 little
When, destroy the structure of useless Organic substance in water, partial organic substances of degrading；
(11) water body is continued to be passed through reaction tank, adjust ph to 7 ~ 9, control 25～35 DEG C of addition salt tolerant compound bacteria of water temperature, carry out
Two grades of aerobic reactions 24 ~ 48 hours, control the dissolved oxygen in Aerobic Pond to be 2 ~ 4mg/l；
(12) step (11) gained waste water is passed through second pond together with mud mixed liquid, supernatant is discharged, mud outward transport is processed；
(13) step (12) gained supernatant is passed through dephosphorization reaction tank, plus lime and coagulant, add in every 1l supernatant
1000 ~ 3500mg lime, 0.005 ~ 0.01mg coagulant；
(14) step (13) gained waste water is passed through dephosphorization sedimentation basin, supernatant qualified discharge, mud together with mud mixed liquid
Separately outward transport is processed.
2. the method for process ida method N-(phosphonomethyl) iminodiacetic acid wastewater according to claim 1 is it is characterised in that described acid reagent is salt
Acid or sulfuric acid, alkaline reagent is NaOH.
3. the method for process ida method N-(phosphonomethyl) iminodiacetic acid wastewater according to claim 1 is it is characterised in that give up in described step (6)
The volume ratio of water and hydrogen peroxide is 50 ~ 100:1.
4. the method for process ida method N-(phosphonomethyl) iminodiacetic acid wastewater according to claim 1 is it is characterised in that in described step (6)
The preparation process of surface catalyst is: the copper nitrate aqueous solution being 1 ~ 5% with percentage by weight and percentage by weight are 1 ~ 5% sulphur
Sour manganese aqueous impregnation activated carbon, after 36 ~ 72 hours, is dried, then is molded with 500 ~ 600 DEG C of roastings.
5. process ida method N-(phosphonomethyl) iminodiacetic acid wastewater according to claim 1 method it is characterised in that described step (8) and step
Suddenly the anaerobism salt tolerant composite bacterial in (10) is Bacteroides, butyric acid vibrios Pseudomonas, Eubacterium, Bifidobacterium, syntrophism list
Born of the same parents Pseudomonas, dark Bacillus, methane phase Bacillus, Methanococcus, methanogenic thrix belong to, methane phase germ belongs to or methane phase eight
Folded Coccus.
6. process ida method N-(phosphonomethyl) iminodiacetic acid wastewater according to claim 1 method it is characterised in that described step (9) and step
Suddenly the aerobic salt-durable microbe bacterium in (11) be gluconobacter oxydans (gluconobacter oxydans), send out
Kefir milk bacillus (lactobacillus fermentum), Lactobacillus brevis (lactobacillu sbrevis), micrococcus luteus (micrococcus leutus), halo micrococcus luteus (also referred to as Micrococcus halobius,micrococcus halobius), Pseudomonas alcaligenes (pseudomonas alcaligenes), cause golden pseudomonad (pseudomonas aureofaciens), greenery false single
Born of the same parents bacterium (pseudomonas chlororaphis), nitrate reductase pseudomonad
(pseudomonas nitroreducens), riboflavin pseudomonad
(pseudomonas riboflavina), pseudomonas putida (pseudomonas putida) or Pseudomonas facilis (pseudomonas facilis).
7. the method for process ida method N-(phosphonomethyl) iminodiacetic acid wastewater according to claim 1 is it is characterised in that described coagulant is polymerization
Aluminium chloride or poly- third acetamide.
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| US6641741B2 (en) * | 2001-04-13 | 2003-11-04 | Dow Agrosciences Llc | Removal and recovery of chloride from phosphonomethyliminodiacetic acid process brine |
| CN102173518B (en) * | 2011-03-16 | 2012-07-25 | 广西壮族自治区化工研究院 | Dephosphorization method for glyphosate wastewater |
| CN102198989A (en) * | 2011-04-22 | 2011-09-28 | 安徽国星生物化学有限公司 | Method for treating PMIDA wastewater |
| CN102531279A (en) * | 2011-12-06 | 2012-07-04 | 安徽锦邦化工股份有限公司 | N-(phosphonomethyl)iminodiacetic acid wastewater treatment process |
| CN203411434U (en) * | 2013-06-27 | 2014-01-29 | 浙江卓锦工程技术有限公司 | Glyphosate pesticide wastewater treatment system |
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2015
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108751597A (en) * | 2018-06-22 | 2018-11-06 | 江苏宜裕环保科技有限公司 | A kind of method of high-performance bio strain processing pyraclostrobin agricultural chemicals waste water |
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