CN105060546B - A kind of processing method of containing alcohol waste water - Google Patents
A kind of processing method of containing alcohol waste water Download PDFInfo
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- CN105060546B CN105060546B CN201510434135.3A CN201510434135A CN105060546B CN 105060546 B CN105060546 B CN 105060546B CN 201510434135 A CN201510434135 A CN 201510434135A CN 105060546 B CN105060546 B CN 105060546B
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Abstract
The present invention relates to a kind of processing method of containing alcohol waste water, the processing method of containing alcohol waste water of specifically a kind of deicing liquid to being produced after the deicing of airport, before separating treatment is carried out using film to containing alcohol waste water, flocculation precipitation pretreatment is carried out to containing alcohol waste water using flocculant, wherein, described flocculant is that acid inorganic polymer flocculant is constituted with the organic polymer coargulator that its aqueous solution is alkalescence by its aqueous solution.The processing method of containing alcohol waste water of the invention, reduces the impurity brought for regulation pH value in containing alcohol waste water flocculating processing procedure and pollutes, and flocculating effect is good, and holding membrane separation plant is stable under high usage, and flocculant can be used with repetitive cycling.
Description
Technical field
The invention belongs to field of Environment Protection, it is related to a kind of processing method of containing alcohol waste water, and in particular to a kind of deicing liquid is to machine
The processing method of the containing alcohol waste water produced after the deicing of field.
Background technology
To safeguard the flight safety of winter airborne vehicle, airport needs to carry out deicing to aircraft and runway using deicing liquid.According to
Estimation, a frame large commercial aircraft deicing takes around 2-4 cubic metres of deicing liquid, and the aircraft of a medium-sized International airport is removed
Between 1000-2500 tons, these deicing liquids and ice, snow etc. can produce substantial amounts of containing alcohol waste water to ice liquid annual consumption after mixing.Contain
Containing materials such as alcohol, high molecular weight water soluble polymer, surfactant, phosphate, corrosion inhibiter in alcohol waste water, pH fluctuations are big, its
Chemical oxygen consumption (COC) (COD) is the thousands of times of common sanitary sewage, belongs to high concentrated organic wastewater, if directly discharge not only increases
The pollutional load of near airports water body, and by the ecological environment on serious harm airport periphery.It is external basic using UF membrane skill
Art is processed containing alcohol waste water, and the impurity in waste water is fast and effectively separated, and by oxygen demand alcohols material high
Regeneration is carried out, so as to reduce influence of the waste water to environment.
Membrane separation technique has the advantages that without phase transformation, pollution-free, energy consumption is low, equipment is simple, operating process is easy to control, especially
It is NF membrane to the removal effect of divalence and multivalent ion preferably, the removal of heavy metal ions that can be used in waste water, in recent years
It is used widely in fields such as petrochemical industry, electronics, food, bioengineering, medical treatment, environmental protection.Due to the water contained in containing alcohol waste water
Soluble macromolecular polymer easy polluted membrane surface in separation process of nanofiltration membrane, causes flux depression, reduces the mission of film
Life-span, it is therefore desirable to add the flocculant to carry out flocculation treatment to containing alcohol waste water, to remove the polymerization of the water soluble polymer in waste water
The materials such as thing.
Current method widely used before membrane separation waste water is flocculent precipitation, i.e., to adding flocculant in waste water
Make the impurity flocculation sediments such as suspension in waste water, to reduce the content of suspension in waste water, improve the stable of membranous system
Property.However, containing anionic high molecular weight water soluble polymer in containing alcohol waste water, a kind of flocculant is used alone, there is dosing
Amount is big, precipitation is generated in water and is relatively disperseed, and Floc strength is not high, the shortcoming being not readily separated.
CN 103910417A disclose a kind of disposing polluted water in oil composite flocculation agent.The composite flocculation agent is by polymerization silicon
The inorganic polymer flocculant and polyacrylamide flocculant of a kind of composition in sour aluminum sulfate or polyaluminium sulfate are combined, nothing
Machine high polymer coagulant is 400-500 with the part by weight of polyacrylamide flocculant:1-4.Using the composite flocculation agent pair
The treatment of oilfield sewage, although flocculating effect is good, the Floc strength of generation is big, but due to inorganic polymer in the composite flocculation agent
Flocculant ratio is excessive, and the waste water after flocculation is in a ratio of acid, it is necessary to further add alkali to be adjusted with raw wastewater.
CN 102786121A disclose a kind of method of use composite flocculation agent Treating Municipal Sewage.The method is using dense
Spend the diatom for 70% and 40% polymerization oxidation iron 80-90 in mass ratio:The flocculant of 10-20 compoundings, can effectively remove
Nitrogen, COD in waste water.Although the flocculant does not produce secondary pollution, waste water flocculating and sedimentation time are long, and flocculant adds
The pH value for adding soda acid to adjust waste water is needed before entering.
Although CN204265568U is disclosed using inorganic polymer flocculant and organic polymer coargulator as airport
The flocculant of deicing containing alcohol waste water, but the not open inorganic polymer flocculant for being particularly adapted to airport deicing containing alcohol waste water
And organic polymer coargulator.
The content of the invention
In order to airport deicing containing alcohol waste water, before membrane separation, be effectively treated, the present invention provides a kind of as follows
The technical scheme for carrying out flocculation treatment to the containing alcohol waste water using specific composite flocculation agent：
A kind of processing method of containing alcohol waste water, separating treatment is carried out using film, is separated using film to containing alcohol waste water
Before processing, flocculation precipitation pretreatment is carried out using flocculant to containing alcohol waste water, wherein, described flocculant is acid by its aqueous solution
Property inorganic polymer flocculant and its aqueous solution be alkalescence organic polymer coargulator composition.
Described containing alcohol waste water is containing alcohol waste water of the deicing liquid to generation after aircraft deicing.
Described its aqueous solution is the ion or ionic group that acid inorganic polymer flocculant is preferably more than by divalence
Composition.
Described its aqueous solution is acid inorganic polymer flocculant more preferably bodied ferric sulfate (PFS), polymerization
One or more compositions in aluminum sulfate (PAS), polymeric aluminium ferrum silicate (PSAF) or ferric-polysilicate (PSF).
Its described aqueous solution is organic polymer coargulator preferably shitosan, sodium carboxymethylcellulose, the sun of alkalescence
One or more compositions in Polyacrylamide or polyethyleneimine.
Its described aqueous solution is the organic polymer coargulator more preferably sodium carboxymethylcellulose of alkalescence.
The processing method of described containing alcohol waste water, its described aqueous solution of regulation be acid inorganic polymer flocculant and
Its aqueous solution is that the ratio of the organic polymer coargulator of alkalescence makes the pH value of described containing alcohol waste water be 6-8.
It is 5*10 that described flocculant adds total amount3* A~1.2*104* A mg/L, wherein A are alcohol in the containing alcohol waste water
In mass percent.
Its described aqueous solution is acid inorganic polymer flocculant and the organic polymer wadding that its aqueous solution is alkalescence
The addition weight ratio of solidifying agent is 1:5~40:1.
Its described aqueous solution is acid inorganic polymer flocculant and the organic polymer wadding that its aqueous solution is alkalescence
The addition weight ratio more preferably 1 of solidifying agent:10~30:1.
Compared with prior art, the advantage of the invention is that：
1st, it is having for alkalescence by inorganic polymer flocculant and its aqueous solution that its aqueous solution described in regulation is acidity
The pH of containing alcohol waste water can adjust to 6~8 the additional proportion of machine high polymer coagulant (film particularly nanofiltration membrane treatment is adapted to
PH scopes), without the extra pH value for adding acid or alkali to carry out regulation system, it is regulation pH value to reduce in containing alcohol wastewater treatment process
And the impurity for bringing pollutes；
2nd, the inorganic polymer flocculant and the aqueous solution that containing alcohol waste water of the invention adds its aqueous solution to be acidity are alkalescence
Organic polymer coargulator after, the containing alcohol waste water flocculating time is short, and the Floc strength of formation is high, easily settles under gravity,
Reduce the difficulty of separation of solid and liquid；
3rd, the visible suspension and anionic high molecular weight water soluble polymer in containing alcohol waste water can be effectively removed, is reduced
The blocked probability of film during nanofiltration membrane treatment, extends the service life of film；
4th, its aqueous solution that the present invention is used is that the inorganic polymer flocculant and its aqueous solution of acidity are the organic of alkalescence
High polymer coagulant is precipitated out in flocculate form substantially during containing alcohol waste water flocculating, be dissolved in containing alcohol waste water from
Sub seldom the electrical conductivity of containing alcohol waste water is not significantly improved, so as to improve the service efficiency of film, keeps membrane separation plant in usury
With stable under rate.
5th, its described aqueous solution is the organic polymer that the inorganic polymer flocculant and its aqueous solution of acidity are alkalescence
After flocculant is added in containing alcohol waste water, a small amount of flocculant of dissolving is recycled after being rejected by, so as to reduce
The addition of flocculant during containing alcohol waste water flocculating.
Specific embodiment
The present invention provides a kind of processing method of containing alcohol waste water, and separating treatment is carried out using film, is used to containing alcohol waste water
Before film carries out separating treatment, flocculation precipitation pretreatment is carried out to containing alcohol waste water using flocculant, wherein, described flocculant is by it
The aqueous solution is acid inorganic polymer flocculant and the organic polymer coargulator composition that its aqueous solution is alkalescence.
A kind of processing method of containing alcohol waste water of the invention, described containing alcohol waste water be using deicing liquid to aircraft deicing after
The containing alcohol waste water of generation, specifically, be primarily referred to as that current Civil Aviation Industry generally uses with ethylene glycol, propane diols, thickener with
And surfactant etc. contains alcohol, water soluble polymer for the airport deicing liquid of primary raw material to what is produced after the aircraft deicing of airport
The containing alcohol waste water of the materials such as polymer, surfactant, phosphate and corrosion inhibiter.
A kind of processing method of containing alcohol waste water of the invention, flocculation sediment is carried out to described containing alcohol waste water using flocculant
During treatment, described by regulation is the organic high of alkalescence by inorganic polymer flocculant and its aqueous solution that its aqueous solution is acidity
The ratio of molecular flocculant, makes described containing alcohol wastewater pH control in 6-8.
A kind of processing method of containing alcohol waste water of the invention, its described aqueous solution is acid inorganic polymer flocculant
Mainly include the anionic inorganic that its aqueous solution is acid cationic inorganic polymer flocculant, its aqueous solution is acidity
High polymer coagulant and its aqueous solution are acid composite type inorganic polymer flocculant.Wherein, its aqueous solution is acid nothing
Machine high polymer coagulant mainly includes molysite system inorganic polymer flocculant, such as bodied ferric sulfate (PFS), poly-ferric chloride
(PFC), polymeric ferric phosphate sulfate (PFPS), ferric-polysilicate (PSF), polymerization silicon ferric sulfate (PSPFS), poly- phosphorus iron chloride (PPFC)
Deng aluminium salt system inorganic polymer flocculant, such as aluminium polychloride (PAC), polyaluminium sulfate (PAS), polyaluminum sulfate aluminium chloride
(PACS), aluminium silicate polymer (PSA) etc.；Its aqueous solution is acid anionic inorganic high polymer coagulant predominantly active silicic acid
Flocculant；Its aqueous solution is acid composite type inorganic polymer flocculant predominantly PAFC (PAFC), polymerised sulphur
Sour ferro-aluminum (PAFS) and polymeric aluminium ferrum silicate (PSAF) etc..Its aqueous solution is that the organic polymer coargulator of alkalescence includes its water
Solution is that the natural macromolecule flocculating agent and its aqueous solution of alkalescence are alkaline synthetic polymeric flocculant.Consider to this hair
The treatment flocculating effect of bright described containing alcohol waste water, its described aqueous solution be acid inorganic polymer flocculant be preferably by
Ion or ionic group composition more than divalence, more preferably bodied ferric sulfate (PFS), polyaluminium sulfate (PAS), polymerization
One or more compositions in aluminium iron silicate (PSAF) or ferric-polysilicate (PSF)；Its described aqueous solution is the organic high of alkalescence
Molecular flocculant is preferably the one kind in shitosan, sodium carboxymethylcellulose, cationic-type polyacrylamide or polyethyleneimine
Or several compositions, more preferably sodium carboxymethylcellulose.
A kind of processing method of containing alcohol waste water of the invention, it is necessary to flocculation sediment impurity with waste water deicing liquid contain
Amount increases and accordingly increases, that is to say, that described flocculant addition increases as the determining alcohol in containing alcohol waste water increases,
So described flocculant adds total amount to be preferably 5*103* A~1.2*104* A mg/L, wherein A are alcohol in the containing alcohol waste water
In mass percent, for example, in the containing alcohol waste water, when the mass percent of alcohol is 2%, flocculant add total amount be 100~
240mg/L, when the mass percent of alcohol is 8%, it is 400~960mg/L that flocculant adds total amount.
A kind of processing method of containing alcohol waste water of the invention, when processing containing alcohol waste water of the invention, described its
The aqueous solution is the addition weight ratio of acid inorganic polymer flocculant and the organic polymer coargulator that its aqueous solution is alkalescence
It is 1:5~40:1, its more preferably described aqueous solution is the inorganic polymer flocculant of acidity and its aqueous solution is alkali
Property organic polymer coargulator addition weight ratio be 1:10~30:1, in the proportion, the containing alcohol waste water is entered
Row flocculation treatment, described containing alcohol wastewater pH may remain between 6-8, and flocculating effect is preferable.
The processing method of containing alcohol waste water of the invention is described further below in conjunction with specific embodiment：
Embodiment
Containing alcohol waste water in the embodiment of the present invention is the containing alcohol waste water to being produced after the deicing of airport, its containing alcohol using deicing liquid
The mass percent of alcohol is 2.5% in waste water, and pH value is 8.5, and following examples or right is added toward described containing alcohol waste water
Corresponding flocculant shown in ratio carries out flocculation sediment.
Flocculant used in following embodiment is existing commercially available flocculant.
Embodiment 1
Flocculant 1 constitutes as follows：
Its aqueous solution is that acid inorganic polymer flocculant is：Polyaluminium sulfate；
Its aqueous solution is that the organic polymer coargulator of alkalescence is：Sodium carboxymethylcellulose；
Polyaluminium sulfate is 4 with the weight ratio of cationic-type polyacrylamide:1；
It is 200mg/L that flocculant adds total amount.
Embodiment 2
Flocculant 2 constitutes as follows：
Its aqueous solution is that acid inorganic polymer flocculant is：Bodied ferric sulfate；
Its aqueous solution is that the organic polymer coargulator of alkalescence is：Shitosan；
Bodied ferric sulfate is 1 with the weight ratio of shitosan:5；
It is 200mg/L that flocculant adds total amount.
Embodiment 3
Flocculant 3 constitutes as follows：
Its aqueous solution is that acid inorganic polymer flocculant is：Polymeric aluminium ferrum silicate；
Its aqueous solution is that the organic polymer coargulator of alkalescence is：Sodium carboxymethylcellulose；
Polymeric aluminium ferrum silicate is 10 with the weight ratio of cationic-type polyacrylamide:1；
It is 200mg/L that flocculant adds total amount.
Embodiment 4
Flocculant 4 constitutes as follows：
Its aqueous solution is that acid inorganic polymer flocculant is：Bodied ferric sulfate；
Its aqueous solution is that the organic polymer coargulator of alkalescence is：Polyethyleneimine；
Bodied ferric sulfate is 1 with the addition weight ratio of polyethyleneimine:2；
It is 200mg/L that flocculant adds total amount.
Embodiment 5
Flocculant 5 constitutes as follows：
Its aqueous solution is that acid inorganic polymer flocculant is：Ferric-polysilicate；
Its aqueous solution is that the organic polymer coargulator of alkalescence is：Sodium carboxymethylcellulose；
Ferric-polysilicate is 1 with the addition weight ratio of sodium carboxymethylcellulose:1；
It is 200mg/L that flocculant adds total amount.
Embodiment 6
Flocculant 6 constitutes as follows：
Its aqueous solution is that acid inorganic polymer flocculant is：Polyaluminium sulfate；
Its aqueous solution is that the organic polymer coargulator of alkalescence is：Shitosan；
Polyaluminium sulfate is 1 with the addition weight ratio of shitosan:10；
It is 200mg/L that flocculant adds total amount.
Embodiment 7
Flocculant 7 constitutes as follows：
Its aqueous solution is that acid inorganic polymer flocculant is：Polymeric aluminium ferrum silicate；
Its aqueous solution is that the organic polymer coargulator of alkalescence is：Cationic-type polyacrylamide；
Polymeric aluminium ferrum silicate is 40 with the weight ratio of cationic-type polyacrylamide:1,
It is 200mg/L that flocculant adds total amount.
Embodiment 8
Flocculant 8 constitutes as follows：
Its aqueous solution is that acid inorganic polymer flocculant is：Polyaluminium sulfate；
Its aqueous solution is that the organic polymer coargulator of alkalescence is：Sodium carboxymethylcellulose；
Polyaluminium sulfate is 1 with the addition weight ratio of sodium carboxymethylcellulose:20；
It is 200mg/L that flocculant adds total amount.
Embodiment 9
Flocculant 9 constitutes as follows：
Its aqueous solution is that acid inorganic polymer flocculant is：Bodied ferric sulfate；
Its aqueous solution is that the organic polymer coargulator of alkalescence is：Cationic-type polyacrylamide；
Polyaluminium sulfate is 50 with the addition weight ratio of cationic-type polyacrylamide:1；
It is 200mg/L that flocculant adds total amount.
Comparative example 1
Inorganic macromolecule flocculant poly ferric sulfate is comprised only in flocculant, addition is 200mg/L.
Comparative example 2
Inorganic macromolecule flocculant poly ferric sulfate is comprised only in flocculant, addition is 400mg/L.
Comparative example 3
Organic flocculant cationic-type polyacrylamide is comprised only in flocculant, addition is 400mg/L.
Comparative example 4
Organic flocculant cationic-type polyacrylamide is comprised only in flocculant, addition is 800mg/L.
Comparative example 5
Organic flocculant Sodium Polyacrylate is comprised only in flocculant, addition is 800mg/L.
Comparative example 6
Organic flocculant non-ionic polyacrylamide is comprised only in flocculant, addition is 800mg/L.
Flocculating effect is evaluated
After above-described embodiment or the corresponding flocculant shown in comparative example are added in above containing alcohol waste water carrying out flocculation sediment
Flocculating effect evaluate it is as shown in table 1 below：
The flocculating effect evaluation of table 1
Zero-intensity is high, and preferably, the fine X-intensity difference of filterability, filterability is poor for the good △-intensity of filterability
The treatment for containing alcohol waste water of the present invention is can be seen that from the flocculating effect evaluation of table 1, using institute in embodiment
Flocculant is stated, though total addition is equal to or less than the addition of flocculant described in comparative example, but using described in embodiment
Its aqueous solution be acid inorganic polymer flocculant and organic polymer coargulator that its aqueous solution is alkalescence, flocculation time
Much smaller than the single flocculant of comparative example, and Floc strength is high, and filterability is good.When its aqueous solution is acid inorganic high score
Sub- flocculant and its aqueous solution are the additional proportion of the organic polymer coargulator of alkalescence 1:10~40:When between 1, containing alcohol is given up
The pH value of water fluctuates between 6~8, is suitable for the separating treatment of the membrane separation of waste water, particularly NF membrane, particularly works as
Its aqueous solution is the additional proportion of acid inorganic polymer flocculant and the organic polymer coargulator that its aqueous solution is alkalescence
Less than 30：When 1, flocculation time is short, and no more than 15 minutes, flocculation efficiency was high.Such as embodiment 1,3,5 and 8, its aqueous solution is alkalescence
Organic polymer coargulator when using sodium carboxymethylcellulose, gained contains to the flocculating effect of the containing alcohol waste water preferably
Supernatant liquid clear after alcohol waste water flocculating.
Patent of the present invention is not limited to above-mentioned disclosed implementation method, every content described in the claims and
Combination belongs to protection of the present invention.
Claims (6)
1. a kind of processing method of containing alcohol waste water, separating treatment is carried out using film, it is characterised in that using film to containing alcohol waste water
Before carrying out separating treatment, flocculation precipitation pretreatment is carried out to containing alcohol waste water using flocculant, wherein, described flocculant is by its water
Solution is acid inorganic polymer flocculant and the organic polymer coargulator composition that its aqueous solution is alkalescence；Described containing alcohol
Waste water is containing alcohol waste water of the deicing liquid to generation after aircraft deicing；It is 5*10 that described flocculant adds total amount3* A~1.2*104*
A mg/L, wherein A are mass percent of the alcohol in the containing alcohol waste water；Its described aqueous solution is acid inorganic polymer
Flocculant is 1 with the addition weight ratio of the organic polymer coargulator that its aqueous solution is alkalescence:10~40:1.
2. the processing method of containing alcohol waste water according to claim 1, it is characterised in that described its aqueous solution is acid nothing
Machine high polymer coagulant is made up of ion or ionic group more than divalence.
3. the processing method of containing alcohol waste water according to claim 2, it is characterised in that：Described its aqueous solution is acid nothing
Machine high polymer coagulant is bodied ferric sulfate (PFS), polyaluminium sulfate (PAS), polymeric aluminium ferrum silicate (PSAF), ferric-polysilicate
(PSF) one or more compositions in.
4. the processing method of containing alcohol waste water according to claim 1, it is characterised in that：Its described aqueous solution is alkalescence
Organic polymer coargulator is the one kind in shitosan, sodium carboxymethylcellulose, cationic-type polyacrylamide, polyethyleneimine
Or several compositions.
5. the processing method of containing alcohol waste water according to claim 4, it is characterised in that：Its described aqueous solution is alkalescence
Organic polymer coargulator is sodium carboxymethylcellulose.
6. the processing method of containing alcohol waste water according to claim 1, it is characterised in that its described aqueous solution of regulation is acid
Property inorganic polymer flocculant and its aqueous solution be that the ratio of organic polymer coargulator of alkalescence makes described containing alcohol waste water
PH value be 6-8.
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| CN111675424A (en) * | 2020-07-22 | 2020-09-18 | 福建省蓝深环保技术股份有限公司 | Sewage treatment process with MBBR |
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| CN102381804A (en) * | 2010-09-01 | 2012-03-21 | 东丽纤维研究所（中国）有限公司 | Process for recycling printing and dyeing wastewater |
| CN103771613B (en) * | 2012-10-23 | 2017-05-17 | 中国石油化工股份有限公司 | Pretreatment method of cellulosic ethanol production wastewater |
| CN204162474U (en) * | 2014-08-13 | 2015-02-18 | 北京万邦达环保技术股份有限公司 | For reclaiming the positive osmosis water treatment system containing dibasic alcohol liquid |
| CN204265568U (en) * | 2014-12-03 | 2015-04-15 | 中国民用航空总局第二研究所 | Airport deicing waste-water recovering treater |
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Effective date of registration: 20171221 Address after: 610041 Sichuan City, Chengdu Province, No. two ring road, south section of No. two, No. 17 Patentee after: Chengdu Newave Aerochemical Co., Ltd. Address before: 610041 Sichuan City, Chengdu Province, No. two ring road, south section of No. two, No. 17 Co-patentee before: Chengdu Newave Aerochemical Co., Ltd. Patentee before: No.2 Inst, China Civil Aviation General Bureau |