CN110104836A - A kind of enhanced processing method suitable for water-base cutting fluid waste water - Google Patents
A kind of enhanced processing method suitable for water-base cutting fluid waste water Download PDFInfo
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- CN110104836A CN110104836A CN201910473992.2A CN201910473992A CN110104836A CN 110104836 A CN110104836 A CN 110104836A CN 201910473992 A CN201910473992 A CN 201910473992A CN 110104836 A CN110104836 A CN 110104836A
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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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
- 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
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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
- 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
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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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
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular 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
- 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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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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
- 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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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to a kind of enhanced processing method suitable for water-base cutting fluid waste water, the organic pollutant and ammonia nitrogen in waste water can be effectively removed.Using physics oil removal-Demulsification and coagulant-ozone catalytic-flocculating setting process integration, the surface charge of oil emulsion oil droplet is fully neutralized using the agent of cationic Demulsification and coagulant, destroy its hydration shell, compression double electric layer, increase the collision probability between oil droplet, accelerate the de- steady demulsification of oil emulsion, and combine heterogeneous tri compound ozone catalyst to the decomposition rate of ozone, generate more reactive hydroxyl radicals, be conducive to catalytic ozonation organic pollutants, substantially increase the mineralization rate of organic matter and the biodegradability of waste water.
Description
Technical field
The present invention relates to a kind of enhanced processing method suitable for water-base cutting fluid waste water, can effectively improve waste water can
Biochemical promotes the removal of Coal Gas Washing Cycling Water hardly degraded organic substance, is used for water pollution intensive treatment field.
Background technique
Cutting Liquid Wastewater belongs to high-concentration industrial-water, it is difficult to handle, it is difficult to degrade, contain a large amount of pollutant.It is water base
Cutting fluid mainly based on cooling, generally can be divided into emulsion, semi-synthetic cutting fluid and synthetic cutting fluid, since its ingredient is multiple
Miscellaneous, chemical stability is good, and direct processing difficulty is larger, and a kind of method is generally difficult to remove, it is necessary to and several method is combined, than
Such as: physical separation, chemical method removal, bioanalysis degradation, advanced oxidation mineralising.For preprocessing process, mainly to waste liquid
It carries out demulsification and removes oily substance in waste liquid in Water-In-Oil or oil-in-water.It is useless to remove that advanced treating is carried out again after demulsification processing
Water part oily substance and dissolved organic matter, suspended matter, ammonia nitrogen etc..
Currently, breaking method has coagulation, acid out, advanced oxidation, membrane technology etc., but membrane filter method equipment investment is big, cost
It is high and the problems such as there are fouling membranes, there is certain limitation;Acid out processing, although can be demulsified achievees the purpose that water-oil separating,
But to the more demanding of equipment.Reverse-phase emulsifier can effectively improve the interface of Water-In-Oil (W/O) or oil-in-water (O/W) lotion
Power makes the colloidal solid in sewage lose stable repulsive force and attraction, final loss of stability and form wadding body, more into one
Step is finally completed the separation to water-oil separating and objectionable impurities in sewage by chemical bridging, reaches recycling oil product, makes sewage
The purpose being purified.But reverse-phase emulsifier both domestic and external is many kinds of at present, demulsification efficiency differs greatly, and how to filter out
The demulsifier of high efficiency, low cost combines other treatment process to reach good demulsification, is a difficulty urgently to be resolved
Topic.Strengthening treatment process of the advanced oxidation processing as Cutting Liquid Wastewater can be to toxic using the hydroxyl radical free radical of high concentration
Noxious pollutant conversion is more thorough, can effectively improve the biodegradability of waste water.But high-level oxidation technology insects are more, running cost
With larger, have some limitations in practical applications.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of that present invention to provide at a kind of reinforcing suitable for water-base cutting fluid waste water
The advantages such as reason method has processing technological flow simple, and obvious processing effect, operating cost are low, usability is extensive, can be oil-containing
Difficult waste water provides one can practical solution.The present invention removes surface oil slick using physics oil removal is first preliminary, is conducive to letter
Change and improve Demulsification and coagulant treatment process and efficiency, recycles heterogeneous catalytic ozonation technology that can further promote to useless
The removal efficiency of Organic substance in water improves the biodegradability of waste water, finally carries out flocculating setting again, utilizes efficient inorganic compounding
Adhesive flocculant can further remove organic matter and ammonia-nitrogen content in waste water, so that waste water be made to reach discharge index.
The object of the invention is realized by following proposal: a kind of enhanced processing method suitable for water-base cutting fluid waste water,
It is characterized by physics oil removal-Demulsification and coagulant-ozone catalytic-flocculating setting process integration, reaches efficiently removal CODcr and ammonia
The effect of nitrogen.
The enhanced processing method suitable for water-base cutting fluid waste water, specifically includes the following steps: (1) will be firstly, will
Water-base cutting fluid waste water is centrifuged, and removes oil slick;(2) under magnetic stirring, according to certain volume ratio cutting in (1)
The cationic Demulsification and coagulant agent polydimethyl diallyl ammonium chloride (PDA) that certain mass score is added in liquid waste water is cut, sufficiently
After mixing, water-oil separating is carried out;(3) upper layer oil slick is removed, lower layer's solution is taken to be placed in heterogeneous ozone catalytic reaction unit
Middle progress catalytic ozonation processing is added a certain amount of heterogeneous ozone catalyst, and adjusts ozonation aerated time and flow;
(4) to after reaction, be separated by solid-liquid separation, the inorganic composite flocculant of certain volume is added into waste water, is sufficiently stirred
Standing sedimentation after 1min, and measure the removal rate of its CODcr and ammonia nitrogen.
The Demulsification and coagulant agent polydimethyl diallyl ammonium chloride (PDA), it is characterised in that the preparation of the PDA
The dimethyl diene that solid content is 60% is added into three-necked flask specifically includes the following steps: (1) is at a certain temperature for method
Propyl ammonium chloride monomer, and be sufficiently stirred after deionized water is added, pH is adjusted, a certain amount of draw is added after being passed through nitrogen 30min
Agent and chelating agent are sent out, 12h is reacted.(2) obtained liquid is poured slowly into acetone, is stirred evenly, pour out supernatant, added
Dehydrated alcohol is washed to solid-state, and Demulsification and coagulant agent PDA can be obtained after vacuum drying.
The Demulsification and coagulant agent polydimethyl diallyl ammonium chloride (PDA), it is characterised in that the reaction temperature
It is 60~75 DEG C, pH is 4.5~5.5, and initiator and chelating agent are respectively ammonium persulfate and two ethylenediamine hydrate tetraacethyl disodiums
The mass ratio of salt, ammonium persulfate and two ethylenediamine hydrate Sequestrene AAs is 1:1;
The Demulsification and coagulant technique, it is characterised in that the monomer mass percentage of the cationic Demulsification and coagulant agent PDA is
The volume ratio of 1%, PDA and waste water is (4~20): 1;
The heterogeneous ozone catalytic technique, it is characterised in that the heterogeneous ozone catalyst is ternary composite metal oxygen
One of compound MnCeLaOx, FeNiCeOx and FeCeLaOx, the additive amount of heterogeneous ozone catalyst are 0.7~1.2g/
ML, ozonation aerated time are 45~60min, gas flow 300mL/min;
The flocculating setting technique, it is characterised in that the inorganic composite flocculant is liquid modified aluminium polychloride, nothing
The dosage of machine composite flocculation agent is 0.5%~2%.
The organic pollutant and ammonia nitrogen in waste water can be effectively removed.Using physics oil removal-Demulsification and coagulant-ozone catalytic-
Flocculating setting process integration is fully neutralized the surface charge of oil emulsion oil droplet using the agent of cationic Demulsification and coagulant, destroys it
Hydration shell, compression double electric layer increase the collision probability between oil droplet, accelerate the de- steady demulsification of oil emulsion, and combine heterogeneous ternary multiple
Ozone catalyst is closed to the decomposition rate of ozone, more reactive hydroxyl radicals is generated, is conducive to have in catalytic ozonation water
Machine pollutant substantially increases the mineralization rate of organic matter and the biodegradability of waste water;Finally utilize liquid modified aluminium polychloride
Flocculant further strengthens the removal to water pollutant and ammonia nitrogen, is not only substantially reduced waste residue moisture content, saves operating cost,
And improve the treatment effect of water-base cutting fluid waste water.Not only simple process, treatment effect are aobvious for the processing method that the present invention uses
It writes, and the advantages such as operating cost is low, usability is extensive, can provide one for the difficult waste water of other oil-containings can practicability side
Case.
The present invention has the advantage that
(1) enhanced processing method of a kind of water-base cutting fluid waste water proposed by the present invention is smelly by physics oil removal-Demulsification and coagulant-
Oxygen catalysis-flocculating setting process integration makes oil-in-water emulsion sharply take off steady break under room temperature, normal pressure using Demulsification and coagulant agent
Cream, oil-water interfaces are clear;In conjunction with heterogeneous catalytic ozonation technology, accelerate the decomposition of ozone using ozone catalyst, generates
A large amount of Strong oxdiative hydroxyl radical free radical, promotes larger molecular organics oxygenolysis in waste water;Finally in conjunction with Flocculating Settling Technology,
Further strengthen the removal to water pollutant and ammonia nitrogen using liquid modified flocculant of polymeric aluminium chloride, is not only substantially reduced useless
Slag moisture content saves operating cost, and improves the treatment effect of water-base cutting fluid waste water.
(2) preparation method of a kind of cationic Demulsification and coagulant agent proposed by the present invention, by control monomer, initiator and
Chelating agent matches the when parameters such as reaction temperature, can be sufficiently when improving cationic degree, and it being made to handle water-base cutting fluid waste water
Ground neutralizes the surface charge of oil emulsion oil droplet, destroys its hydration shell, and compression double electric layer increases the collision probability between oil droplet, accelerates
The de- steady demulsification of oil emulsion.Not only positive charge density height, good water solubility, cationic monomer structure are steady by cationic demulsifier PDA
Calmly, pH is applied widely, and demulsification is significant, sinking speed is fast.
(3) liquid modifying flocculant proposed by the present invention can be added directly without dilution, and easy to operate, flocculant can be fast
Fast adsorption bridging is improved to adsorption capacities such as Organic substance in water, colloid, suspended matters, and coagulant precipitation effect is prominent, is used for advanced oxygen
It can further improve the CODcr and ammonia-nitrogen content removal effect of waste water after change treatment process.
Specific embodiment
By embodiment, the present invention is described further.
Embodiment 1:
A kind of enhanced processing method suitable for water-base cutting fluid waste water utilizes physics oil removal-Demulsification and coagulant-ozone catalytic-wadding
Process integration drops in retrogradation, achievees the effect that efficiently to remove CODcr and ammonia nitrogen, in the steps below:
(1) firstly, water-base cutting fluid waste water is centrifuged, oil slick is removed;
(2) Demulsification and coagulant:
At 65 DEG C, solid content is added into three-necked flask and is 60% dimethyldiallylammonchloride chloride monomer, and deionization is added
It is sufficiently stirred after water, adjusting pH is 5.5, and being passed through after nitrogen 30min according to mass ratio is that ammonium persulfate and two hydration second is added in 1:1
Edetate disodium salt reacts 12h as initiator and chelating agent;Obtained liquid is poured slowly into acetone, stirring is equal
It is even, supernatant is poured out, dehydrated alcohol is added and is washed to solid-state, cationic Demulsification and coagulant agent can be obtained after vacuum drying
Polydimethyl diallyl ammonium chloride (PDA);It under magnetic stirring, is Cutting Liquid Wastewater of the 15:1 in (1) according to volume ratio
The middle cationic Demulsification and coagulant agent polydimethyl diallyl ammonium chloride (PDA) that monomer mass score is added and is 1%, is sufficiently mixed
After stirring, water-oil separating is carried out;
(3) ozone catalytic: removal upper layer oil slick takes lower layer's solution to be placed in progress ozone in heterogeneous ozone catalytic reaction unit and urges
Change oxidation processes, the heterogeneous ozone catalyst FeCeLaOx of 1g/mL is added, and adjusts the ozonation aerated time and flow is respectively
45min and 300mL/min;
(4) flocculating setting: to after reaction, be separated by solid-liquid separation, 2% liquid modifying aluminium polychloride being added into waste water,
Standing sedimentation after 1min is sufficiently stirred, and the removal rate for measuring its CODcr and ammonia nitrogen is respectively 81.1% and 87.3%.
Embodiment 2
A kind of enhanced processing method suitable for water-base cutting fluid waste water utilizes physics oil removal-Demulsification and coagulant-ozone catalytic-wadding
Process integration drops in retrogradation, achievees the effect that efficiently to remove CODcr and ammonia nitrogen, in the steps below:
(1) firstly, water-base cutting fluid waste water is centrifuged, oil slick is removed;
(2) Demulsification and coagulant:
At 70 DEG C, solid content is added into three-necked flask and is 60% dimethyldiallylammonchloride chloride monomer, and deionization is added
It is sufficiently stirred after water, adjusting pH is 4.5, and being passed through after nitrogen 30min according to mass ratio is that ammonium persulfate and two hydration second is added in 1:1
Edetate disodium salt reacts 12h as initiator and chelating agent;Obtained liquid is poured slowly into acetone, stirring is equal
It is even, supernatant is poured out, dehydrated alcohol is added and is washed to solid-state, Demulsification and coagulant agent PDA can be obtained after vacuum drying.
Under magnetic stirring, according to volume ratio be 4:1 be added in the Cutting Liquid Wastewater in (1) monomer mass score be 1%
Cationic Demulsification and coagulant agent polydimethyl diallyl ammonium chloride (PDA), after being sufficiently mixed stirring, carry out water-oil separating;
(3) ozone catalytic: removal upper layer oil slick takes lower layer's solution to be placed in progress ozone in heterogeneous ozone catalytic reaction unit and urges
Change oxidation processes, the heterogeneous ozone catalyst MnCeLaOx of 1.2g/mL is added, and adjusts ozonation aerated time and flow difference
For 60min and 300mL/min;
(4) flocculating setting: to after reaction, be separated by solid-liquid separation, 2% liquid modifying aluminium polychloride being added into waste water,
Standing sedimentation after 1min is sufficiently stirred, and the removal rate for measuring its CODcr and ammonia nitrogen is respectively 92.4% and 95.3%.
Embodiment 3
A kind of enhanced processing method suitable for water-base cutting fluid waste water utilizes physics oil removal-Demulsification and coagulant-ozone catalytic-wadding
Process integration drops in retrogradation, achievees the effect that efficiently to remove CODcr and ammonia nitrogen, in the steps below:
(1) firstly, water-base cutting fluid waste water is centrifuged, oil slick is removed;
(2) Demulsification and coagulant:
At 75 DEG C, solid content is added into three-necked flask and is 60% dimethyldiallylammonchloride chloride monomer, and deionization is added
It is sufficiently stirred after water, adjusting pH is 5, and being passed through after nitrogen 30min according to mass ratio is that ammonium persulfate and two hydration second two is added in 1:1
Amine Sequestrene AA reacts 12h as initiator and chelating agent;Obtained liquid is poured slowly into acetone, is stirred evenly,
Supernatant is poured out, dehydrated alcohol is added and is washed to solid-state, Demulsification and coagulant agent PDA can be obtained after vacuum drying.In magnetic
Power stirring under, according to volume ratio be 20:1 is added in the Cutting Liquid Wastewater in (1) monomer mass score for 1% cation break
Newborn coagulant polydimethyl diallyl ammonium chloride (PDA) after being sufficiently mixed stirring, carries out water-oil separating;
(3) ozone catalytic: removal upper layer oil slick takes lower layer's solution to be placed in progress ozone in heterogeneous ozone catalytic reaction unit and urges
Change oxidation processes, the heterogeneous ozone catalyst MnCeLaOx of 1g/mL is added, and adjusts the ozonation aerated time and flow is respectively
45min and 300mL/min;
(4) flocculating setting: to after reaction, be separated by solid-liquid separation, 1% liquid modifying aluminium polychloride being added into waste water,
Standing sedimentation after 1min is sufficiently stirred, and the removal rate for measuring its CODcr and ammonia nitrogen is respectively 78.2% and 80.9%.
Embodiment 4
A kind of enhanced processing method suitable for water-base cutting fluid waste water utilizes physics oil removal-Demulsification and coagulant-ozone catalytic-wadding
Process integration drops in retrogradation, achievees the effect that efficiently to remove CODcr and ammonia nitrogen, in the steps below:
(1) firstly, water-base cutting fluid waste water is centrifuged, oil slick is removed;
(2) Demulsification and coagulant:
At 70 DEG C, solid content is added into three-necked flask and is 60% dimethyldiallylammonchloride chloride monomer, and deionization is added
It is sufficiently stirred after water, adjusting pH is 4.5, and being passed through after nitrogen 30min according to mass ratio is that ammonium persulfate and two hydration second is added in 1:1
Edetate disodium salt reacts 12h as initiator and chelating agent;Obtained liquid is poured slowly into acetone, stirring is equal
It is even, supernatant is poured out, dehydrated alcohol is added and is washed to solid-state, Demulsification and coagulant agent PDA can be obtained after vacuum drying.?
Under magnetic agitation, it is broken to be that the cation that monomer mass score is 1% is added in 4:1 in the Cutting Liquid Wastewater in (1) according to volume ratio
Newborn coagulant polydimethyl diallyl ammonium chloride (PDA) after being sufficiently mixed stirring, carries out water-oil separating;
(3) ozone catalytic: removal upper layer oil slick takes lower layer's solution to be placed in progress ozone in heterogeneous ozone catalytic reaction unit and urges
Change oxidation processes, the heterogeneous ozone catalyst FeNiCeOx of 0.7g/mL is added, and adjusts ozonation aerated time and flow difference
For 60min and 300mL/min;
(4) to after reaction, be separated by solid-liquid separation, 0.5% liquid modifying polyaluminium flocculating setting: is added into waste water
Standing sedimentation after 1min is sufficiently stirred in aluminium, and the removal rate for measuring its CODcr and ammonia nitrogen is respectively 86.6% and 88.4%.
Claims (6)
1. a kind of enhanced processing method suitable for water-base cutting fluid waste water, which is characterized in that mixed using physics oil removal-demulsification
Solidifying-ozone catalytic-flocculating setting process integration, achievees the effect that efficiently to remove CODcr and ammonia nitrogen, comprising the following steps:
(1) firstly, water-base cutting fluid waste water is centrifuged, oil slick is removed;
(2) under magnetic stirring, in the Cutting Liquid Wastewater according to certain volume ratio in (1) be added certain mass score sun from
Sub- Demulsification and coagulant agent polydimethyl diallyl ammonium chloride (PDA) after being sufficiently mixed stirring, carries out water-oil separating;
(3) upper layer oil slick is removed, takes lower layer's solution to be placed in heterogeneous ozone catalytic reaction unit and carries out at catalytic ozonation
Reason is added a certain amount of heterogeneous ozone catalyst, and adjusts ozonation aerated time and flow;
(4) to after reaction, be separated by solid-liquid separation, the inorganic composite flocculant of certain volume is added into waste water, sufficiently stirs
Standing sedimentation after 1min is mixed, and measures the removal rate of its CODcr and ammonia nitrogen.
2. the enhanced processing method according to claim 1 suitable for water-base cutting fluid waste water, which is characterized in that described
The preparation of Demulsification and coagulant agent polydimethyl diallyl ammonium chloride (PDA) the following steps are included:
(1) at 60~75 DEG C, the dimethyldiallylammonchloride chloride monomer that solid content is 60% is added into three-necked flask, and
It is sufficiently stirred after deionized water is added, adjusting pH is weak acid, and initiator and chelating agent, reaction is added after being passed through nitrogen 30min
12h, wherein initiator and chelating agent are respectively ammonium persulfate and two ethylenediamine hydrate Sequestrene AAs, ammonium persulfate and two
The mass ratio of ethylenediamine hydrate Sequestrene AA is 1:1;
(2) obtained liquid is poured slowly into acetone, is stirred evenly, pour out supernatant, added dehydrated alcohol and washed
To solid-state, Demulsification and coagulant agent PDA can be obtained after vacuum drying.
3. the enhanced processing method according to claim 2 suitable for water-base cutting fluid waste water, which is characterized in that described
Reaction temperature is that pH is 4.5~5.5.
4. the enhanced processing method according to claim 1 suitable for water-base cutting fluid waste water, which is characterized in that described
In Demulsification and coagulant technique, the monomer mass percentage of cationic Demulsification and coagulant agent PDA is 1%, PDA and the volume ratio of waste water is (4
~20): 1.
5. the enhanced processing method according to claim 1 suitable for water-base cutting fluid waste water, it is characterised in that described
Heterogeneous ozone catalytic technique, the heterogeneous ozone catalyst be ternary composite metal oxide MnCeLaOx,
The additive amount of one of FeNiCeOx and FeCeLaOx, heterogeneous ozone catalyst are 0.7~1.2g/mL, when ozonation aerated
Between be 45~60min, gas flow 300mL/min.
6. the enhanced processing method according to claim 1 suitable for water-base cutting fluid waste water, which is characterized in that described
In flocculating setting technique, inorganic composite flocculant is liquid modified aluminium polychloride, and the dosage of inorganic composite flocculant is
0.5%~2%.
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Cited By (3)
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CN111056664A (en) * | 2019-09-15 | 2020-04-24 | 南京霄祥工程技术有限公司 | Zero-emission treatment process and device for oil-containing emulsion wastewater |
CN111470696A (en) * | 2020-05-04 | 2020-07-31 | 东阳市琰安建筑工程有限公司 | Treatment method of emulsified oil-containing industrial wastewater |
CN114477629A (en) * | 2022-01-21 | 2022-05-13 | 南京高科环境科技有限公司 | Treatment system and treatment method for viscose flushing wastewater |
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