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 PDF

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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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water
waste water
demulsification
cutting fluid
added
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何丹农
童琴
赵昆峰
王泽轩
代卫国
金彩虹
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Shanghai National Engineering Research Center for Nanotechnology Co Ltd
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Shanghai National Engineering Research Center for Nanotechnology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/38Treatment of water, waste water, or sewage by centrifugal separation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245Treatment 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
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56Macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/78Treatment of water, waste water, or sewage by oxidation with ozone
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds

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

A kind of enhanced processing method suitable for water-base cutting fluid waste water
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%.
CN201910473992.2A 2019-06-02 2019-06-02 A kind of enhanced processing method suitable for water-base cutting fluid waste water Pending CN110104836A (en)

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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

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