CN110357231A - Plastic microsphere wastewater treatment recovery method - Google Patents
Plastic microsphere wastewater treatment recovery method Download PDFInfo
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- CN110357231A CN110357231A CN201910496400.9A CN201910496400A CN110357231A CN 110357231 A CN110357231 A CN 110357231A CN 201910496400 A CN201910496400 A CN 201910496400A CN 110357231 A CN110357231 A CN 110357231A
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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
- C02F1/5209—Regulation methods for flocculation or precipitation
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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
- C02F1/54—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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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Abstract
The present invention relates to wastewater treatment method fields, disclose a kind of plastic microsphere wastewater treatment recovery method, comprising the following steps: are stirred operation to plastic microsphere waste water, the pH value of plastic microsphere waste water is adjusted to 7.8~8.5, obtain alkaline plastic microsphere waste water；Aluminium polychloride is added into alkaline plastic microsphere waste water, obtains level-one plastic microsphere waste water containing wadding；Ten sulfate dihydrate aluminium ammoniums are added into level-one plastic microsphere waste water containing wadding, obtain second level plastic microsphere waste water containing wadding；After the pH value of second level plastic microsphere waste water containing wadding is adjusted to 6.8~7.2, cationic polyacrylamide is added into second level plastic microsphere waste water containing wadding, obtains three-level plastic microsphere waste water containing wadding；Operation is filtered to three-level plastic microsphere waste water containing wadding, obtains floccule containing plastic microsphere.This method is innovative on aluminium polychloride settling foundation to be added ten sulfate dihydrate aluminium ammoniums, greatly shortens sedimentation duration；Have the characteristics that at low cost, applied widely, treatment effeciency is fast, high to the clean-up effect of plastic microsphere.
Description
Technical field
The present invention relates to wastewater treatment method fields, more particularly to a kind of plastic microsphere wastewater treatment recovery method.
Background technique
Plastic microsphere is a kind of polymer beads, and common material has polystyrene (PS), polyethylene terephthalate
(PET), polymethyl methacrylate (PMMA), polypropylene (PP) etc..10 μm of the common particle size range of the partial size of plastic microsphere~
1mm, more tiny even only have tens nanometer, all also more tiny than some viruses.Plastic microsphere due to its volume is small by
Be widely used in daily use chemicals, medicine in the industries such as liquid crystal, but also can not be filtered effectively because volume is tiny, finally flow into it is big from
So, it and because being difficult to degrade, and then gathers in the environment.Marine fishes from China investigate display, are worth in 20 diversified economies
In higher Common Fish sampling, plastic microsphere has been had been found that in 90% fish sample, these plastic microspheres are via food chain
It will be finally enriched on the body of people.Currently, the attention rate that China pollutes plastic microsphere is not still high, related limitation is not yet formed
Policy and supervision.And with the increasingly extensive use of plastic microsphere, it effective collection processing is carried out to it will become to be increasingly urgent to
Demand.
Currently, sewage treatment process can not also effectively remove plastic microsphere, Major Difficulties are:
1, plastic microsphere partial size is tiny, and common filtering can not filter out, and reverse osmosis treatment is at high cost and is easy to damage machine.
2, plastic microsphere density and water phase are close, can stable dispersion in water, it is not easily settled, it is difficult to separate.
3, plastic microsphere belongs to high polymer, and chemical property is stablized, and not with other substance reactions, acid and alkali-resistance is not perishable,
It is difficult to be dissolved by the solvent.
4, plastic microsphere quality is low in water body, and concentration is much lower compared with general plastic microsphere waste water, general water process
Effect is poor, can not completely remove microballoon, and the sedimentation time is too long, inefficiency.
Therefore demand one kind urgent at present is low in cost, sinking speed is fast, treatment effeciency is fast, the plastics of good purification are micro-
Ball wastewater treatment recovery method to carry out effective collection processing to plastic microsphere.
Summary of the invention
The purpose of the present invention is overcoming shortcoming in the prior art, it is a kind of applied widely, low in cost, heavy to provide
Reduction of speed degree is fast, treatment effeciency is fast, good purification plastic microsphere wastewater treatment recovery method.
The purpose of the present invention is achieved through the following technical solutions:
A kind of plastic microsphere wastewater treatment recovery method, comprising the following steps:
Operation is stirred to plastic microsphere waste water, the pH value of the plastic microsphere waste water is adjusted to 7.8~8.5, is obtained
To alkaline plastic microsphere waste water；
Aluminium polychloride is added into the alkaline plastic microsphere waste water, obtains level-one plastic microsphere waste water containing wadding；
Ten sulfate dihydrate aluminium ammoniums are added into level-one plastic microsphere waste water containing wadding, it is useless to obtain second level plastic microsphere containing wadding
Water；
After the pH value of second level plastic microsphere waste water containing wadding is adjusted to 6.8~7.2, Xiang Suoshu second level plastics containing wadding are micro-
Cationic polyacrylamide is added in ball waste water, obtains three-level plastic microsphere waste water containing wadding；
Operation is filtered to three-level plastic microsphere waste water containing wadding, obtains floccule containing plastic microsphere.
A kind of embodiment wherein is also filtered after being filtered operation to three-level plastic microsphere waste water containing wadding
Liquid；The plastic microsphere wastewater treatment recovery method is further comprising the steps of: carrying out Pure water preparation to the filtrate, obtains pure
Water.
A kind of embodiment wherein, second level plastic microsphere waste water containing wadding includes heavy wad a quilt with cotton turbid and supernatant, described
Cationic polyacrylamide is added into second level plastic microsphere waste water containing wadding, obtains the behaviour of three-level plastic microsphere waste water containing wadding
It specifically includes: second level plastic microsphere waste water containing wadding being stood to solid-liquid and is layered, the supernatant is discharged, it is described heavy to be left
Wadding turbid, is added cationic polyacrylamide into the heavy wadding turbid, is stirred operation to the heavy wadding turbid, obtains institute
State three-level plastic microsphere waste water containing wadding.
A kind of embodiment wherein, the plastic microsphere wastewater treatment recovery method are further comprising the steps of: to described
Supernatant carries out Pure water preparation, obtains pure water.
A kind of embodiment wherein, the Pure water preparation are specially ultrafiltration and reverse osmosis operation wherein at least one
Kind.
A kind of embodiment wherein, the filter operation are specially natural filtration operation, pressure filtration operation and vacuum
Filter operation wherein at least one.
A kind of embodiment wherein, the pH value by the plastic microsphere waste water are adjusted to 7.8~8.5 operation tool
Body include: be added into the plastic microsphere waste water pH adjusting agent pH value of the plastic microsphere waste water is adjusted to 7.8~
8.5, the pH adjusting agent is specially sodium hydroxide, potassium hydroxide, ammonium hydroxide, hydrochloric acid, sulfuric acid and carbonic acid wherein at least one.
A kind of embodiment wherein, the pH value by second level plastic microsphere waste water containing wadding are adjusted to 6.8~7.2
Operation specifically include: toward the second level containing wadding plastic microsphere waste water in be added acid regulator by the second level containing wadding plastics
The pH value of microballoon waste water is adjusted to 6.8~7.2, and the acid regulator is specially hydrochloric acid, sulfuric acid and carbonic acid wherein at least one.
The speed of agitator of a kind of embodiment wherein, the stirring operation is controlled in 80r/min~120r/min, water flow
Speed control is in 0.2m/s~0.4m/s.
A kind of embodiment wherein, the dosage of the aluminium polychloride are the modeling that plastic microsphere concentration per ton is 1mg/ml
Expect that 50~70g aluminium polychloride is added in microballoon waste water；The dosage of the ten sulfate dihydrates aluminium ammonium is that plastic microsphere per ton is dense
Degree is that 50~70g, ten sulfate dihydrate aluminium ammonium is added in the plastic microsphere waste water of 1mg/ml；The use of the cationic polyacrylamide
50~70g cationic polyacrylamide is added in the plastic microsphere waste water that amount is 1mg/ml for plastic microsphere concentration per ton.
Compared with prior art, the present invention has at least the following advantages:
1, plastic microsphere wastewater treatment recovery method of the invention has filled up the blank of plastic microsphere liquid waste processing.
2, plastic microsphere wastewater treatment recovery method of the invention is to different-grain diameter and the equal energy of different types of plastic microsphere
Good effect is played, it is applied widely.
3, plastic microsphere wastewater treatment recovery method of the invention innovative the adding on aluminium polychloride settling foundation is thrown
Ten sulfate dihydrate aluminium ammoniums, sedimentation duration is greatly shortened in pole.
4, plastic microsphere wastewater treatment recovery method dosage of the invention is few, at low cost, easy to operate, treatment effeciency
Fastly, clean-up effect is up to 100%, is easy to heavy industrialization processing, is also suitable for laboratory treatment.
5, the water 95% after ultrafiltration can be returned directly to the raw water box of water purification system, can increase substantially in this way
The utilization efficiency of water saves water resource.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the step flow chart of the plastic microsphere wastewater treatment recovery method of an embodiment of the present invention；
Fig. 2 is standing effect picture of 1000ml second level plastic microsphere waste water containing wadding standing after 2 hours in embodiment 2；
Fig. 3 is the test effect figure that plastic microsphere waste water carries out the test of 10,000 times of Electronic Speculum in embodiment 2；
Fig. 4 is the test effect figure that supernatant carries out the test of 10,000 times of Electronic Speculum in embodiment 2；
Fig. 5 is the test effect figure that filtrate carries out the test of 20,000 times of Electronic Speculum in embodiment 2.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
A kind of plastic microsphere wastewater treatment recovery method, comprising the following steps: operation is stirred to plastic microsphere waste water,
The pH value of the plastic microsphere waste water is adjusted to 7.8~8.5, obtains alkaline plastic microsphere waste water；It is micro- toward the alkaline plastics
Aluminium polychloride is added in ball waste water, obtains level-one plastic microsphere waste water containing wadding；Into level-one plastic microsphere waste water containing wadding
Ten sulfate dihydrate aluminium ammoniums are added, obtain second level plastic microsphere waste water containing wadding；By the pH value of second level plastic microsphere waste water containing wadding
After being adjusted to 6.8~7.2, cationic polyacrylamide is added in the plastic microsphere waste water containing wadding in Xiang Suoshu second level, is obtained three-level and is contained
Wadding plastic microsphere waste water；Operation is filtered to three-level plastic microsphere waste water containing wadding, obtains floccule containing plastic microsphere.
In order to be preferably illustrated to above-mentioned plastic microsphere wastewater treatment recovery method, to more fully understand above-mentioned plastics
The design of microballoon wastewater treatment recovery method.In one embodiment, referring to Fig. 1, a kind of plastic microsphere waste water treatment and reclamation side
Method, comprising the following steps: S110 is stirred operation to plastic microsphere waste water, and the pH value of the plastic microsphere waste water is adjusted
To 7.8~8.5, alkaline plastic microsphere waste water is obtained；Aluminium polychloride is added into the alkaline plastic microsphere waste water in S120,
Obtain level-one plastic microsphere waste water containing wadding；Ten sulfate dihydrate aluminium ammoniums are added into level-one plastic microsphere waste water containing wadding in S130,
Obtain second level plastic microsphere waste water containing wadding；The pH value of second level plastic microsphere waste water containing wadding is adjusted to 6.8~7.2 by S140
Afterwards, cationic polyacrylamide is added in Xiang Suoshu second level plastic microsphere waste water containing wadding, obtains three-level plastic microsphere waste water containing wadding；
S150 is filtered operation to three-level plastic microsphere waste water containing wadding, obtains floccule containing plastic microsphere.
It is understood that on the one hand, stirring operation be in order to accelerate aluminium polychloride, ten sulfate dihydrate aluminium ammoniums and sun from
The reaction speed of sub- polyacrylamide, and then accelerate the sinking speed of plastic microsphere.
On the one hand, aluminium polychloride has stronger bridge formation attraction performance, in hydrolytic process, with agglomerating, inhales
Echo precipitating etc. physical and chemical processes, can to plastic microsphere have height charge neutrality and bridge linking effect, and can strength absorption other
Toxic and heavy metal ion, the alumine hydroxide colloid and plastic microsphere of generation form floccule containing plastic microsphere.
On the one hand, although absorption plastic microsphere can be settled completely using aluminium polychloride merely, due to simple
It is ineffective using the adsorption and sedimentation of aluminium polychloride, adsorption and sedimentation overlong time.To solve the above-mentioned problems, therefore ten are added to
The addition of two hydrazine aluminum sulfate ammoniums, ten sulfate dihydrate aluminium ammoniums can enhance sediment capture effect, and assisted plastic microballoon is further
It is adsorbed, so that adsorption and sedimentation process foreshortens to 2h by original 48h or more, very big amplitude promotes the floccule containing plastic microsphere
Settling velocity and the pH value that plastic microsphere waste water can be reduced.
On the one hand, the chemical formula of aluminium polychloride is Al2Cln(OH)6-n, the chemical formula of ten sulfate dihydrate aluminium ammoniums is NH4Al
(SO4)2·12H2O, the two can all generate a large amount of Al when hydrolyzing3+, Al3+It can be with the OH in plastic microsphere waste water-Reaction generates Al3+
Colloid, as shown in formula 1, formula 1:Al3++OH-→Al2(OH)3↓ (colloid).When plastic microsphere waste water pH value is alkaline condition
Under, reaction can be promoted to the right, and plastic microsphere is fettered in the case where sediment net catches mechanism and forms floccule.But in actual use,
When second level plastic microsphere waste water pH value containing wadding is lower than 7.8, aluminium polychloride not will form colloid or only form a small amount of colloid；
When second level plastic microsphere waste water pH value containing wadding is higher than 8.5, then cause water body muddy, will increase filtering cost, therefore needing will modeling
The pH value of material microballoon waste water is adjusted to 7.8~8.5.
On the other hand, although under the synergy of aluminium polychloride and ten sulfate dihydrate aluminium ammoniums, plastic microsphere can be by
Rapid adsorption and sedimentation is floccule, but due to the light and soft easy dispersion of this floccule quality, the plastic microsphere in floccule is still
It can go down through strainer, and floccule can block strainer, so this floccule cannot be removed by filtration.On solving
Problem is stated, therefore is added to cationic polyacrylamide, the addition of cationic polyacrylamide enables to this quality light and soft easily
The floccule of dispersion is adhered Cheng Geng great and is not easy the floccule containing plastic microsphere dispersed, and floccule containing plastic microsphere can not be worn at this time
Filter screen, therefore it can be filtered to remove easily.
In one embodiment, after being filtered operation to three-level plastic microsphere waste water containing wadding, filtrate is also obtained；It is described
Plastic microsphere wastewater treatment recovery method is further comprising the steps of: carrying out Pure water preparation to the filtrate, obtains pure water.It is described pure
Water process is specially ultrafiltration and reverse osmosis operation wherein at least one.It is understood that filtrate remains sodium ion etc.
Minute impurities, the minute impurities such as sodium ion further gone in water removal by ultrafiltration and reverse osmosis operation, to obtain
Pure water, to complete the recycling of water in plastic microsphere waste water.
In one embodiment, second level plastic microsphere waste water containing wadding includes heavy wad a quilt with cotton turbid and supernatant, described to described
Cationic polyacrylamide is added in the plastic microsphere waste water containing wadding in second level, and the operation for obtaining three-level plastic microsphere waste water containing wadding is specific
Include: to stand second level plastic microsphere waste water containing wadding to solid-liquid to be layered, the supernatant is discharged, it is turbid to be left the heavy wadding
Cationic polyacrylamide is added into the heavy wadding turbid in liquid, is stirred operation to the heavy wadding turbid, obtains described three
Grade plastic microsphere waste water containing wadding.Pure water preparation is carried out to the supernatant, obtains pure water.The Pure water preparation is specially ultrafiltration behaviour
Work and reverse osmosis operation wherein at least one.It is understood that on the one hand, due to the light and soft easy dispersion of this floccule quality,
Plastic microsphere in floccule can still go down through strainer, and floccule can block strainer, so cannot be filtered out by crossing
This floccule is removed, can only be operated such that floccule settles by standing, so that solid-liquid is layered, achieve the effect that coarse filtration,
Obtain the heavy wadding turbid of plastic microsphere high concentration in water.Then again by adding cation polypropylene acyl in heavy wadding turbid
Amine comes so that the light and soft floccule easily dispersed of this quality is adhered Cheng Geng great and is not easy the floccule dispersed, micro- containing plastics at this time
Ball floccule can not pass through strainer, therefore it can be filtered to remove easily.On the other hand, it is small to remain sodium ion etc. for supernatant
Impurity, the minute impurities such as sodium ion further gone in water removal by ultrafiltration and reverse osmosis operation, so that pure water is obtained,
To complete the recycling of water in plastic microsphere waste water.
In one embodiment, the filter operation is specially natural filtration operation, pressure filtration operation and vacuum filter behaviour
Make wherein at least one.For example, the filter operation is specially natural filtration operation, pressure filtration operation and vacuum filter behaviour
Make.For example, the filter operation is specially natural filtration operation.For example, the filter operation is specially pressure filtration operation.
In one embodiment, the operation that the pH value by the plastic microsphere waste water is adjusted to 7.8~8.5 is specifically wrapped
It includes: pH adjusting agent being added into the plastic microsphere waste water by the pH value of the plastic microsphere waste water and is adjusted to 7.8~8.5,
The pH adjusting agent is specially sodium hydroxide, potassium hydroxide, ammonium hydroxide, hydrochloric acid, sulfuric acid and carbonic acid wherein at least one.For example, institute
State the mixing liquid that pH adjusting agent is sodium hydroxide, potassium hydroxide, ammonium hydroxide, hydrochloric acid, sulfuric acid and carbonic acid.For example, the pH value
Regulator is sodium hydroxide.It is understood that the pH value adjustment agent can be with when plastic microsphere pH value of waste water is lower than 7.8
For sodium hydroxide, potassium hydroxide and ammonium hydroxide wherein at least one；When plastic microsphere pH value of waste water is higher than 8.5, the pH value tune
Saving agent can be hydrochloric acid, sulfuric acid and carbonic acid wherein at least one, in order to adjust the pH value of plastic microsphere to 7.8~8.5.
In one embodiment, the pH value by second level plastic microsphere waste water containing wadding is adjusted to 6.8~7.2 operation
It specifically includes: acid regulator being added into second level plastic microsphere waste water containing wadding, second level plastic microsphere containing wadding gives up
The pH value of water is adjusted to 6.8~7.2, and the acid regulator is specially hydrochloric acid, sulfuric acid and carbonic acid wherein at least one.It needs
Bright, the pH value of plastic microsphere waste water is 7.8~8.5, in order to which the pH value of second level plastic microsphere waste water containing wadding is adjusted to 6.8
~7.2, therefore need that acid regulator is added.The acid regulator can be hydrochloric acid, the mixed liquor of sulfuric acid and carbonic acid.The acid
Property regulator may be hydrochloric acid, sulfuric acid or carbonic acid.
In one embodiment, the speed of agitator of the stirring operation is controlled in 80r/min~120r/min, water velocity control
System is in 0.2m/s~0.4m/s.It should be noted that mixing speed is too fast, the colloid that will lead to generation is meticulous, is unfavorable for settling；
Mixing speed is excessively slow, will lead to that precipitation reaction is excessively slow, generates slowing for colloid；And when mixing speed 80r/min~
120r/min, water velocity will lead to the fast speed for generating colloid in 0.2m/s~0.4m/s, the colloidal volume of generation compared with
Greatly, it is conducive to sedimentation.
In one embodiment, the dosage of the aluminium polychloride is the plastic microsphere that plastic microsphere concentration per ton is 1mg/ml
50~70g aluminium polychloride is added in waste water；For example, the concentration of the aluminium polychloride is 60g/ tons.Wherein g/ tons refer to it is per ton
Plastic microsphere concentration is that the weight (g) of something is added in the plastic microsphere waste water of 1mg/ml.The ten sulfate dihydrates aluminium ammonium
Dosage be that 50~70g, ten sulfate dihydrate aluminium ammonium is added in plastic microsphere waste water that plastic microsphere concentration per ton is 1mg/ml；Example
Such as, the concentration of the ten sulfate dihydrates aluminium ammonium is 60g/ tons.The dosage of the cationic polyacrylamide is that plastics per ton are micro-
Ball concentration is that 50~70g cationic polyacrylamide is added in the plastic microsphere waste water of 1mg/ml.For example, the cation poly- third
The concentration of acrylamide is 10g/ tons.It should be noted that on the one hand, the dosage of aluminium polychloride is critically important, if aluminium polychloride
Dosage is very few, then the adsorption and sedimentation effect of needs is not achieved；If aluminium polychloride is excessive, the too small sedimentation effect of colloidal solid is not
It is good, and aluminium polychloride can remain in plastic microsphere waste water and cause water body color partially yellow.And when the dosage of aluminium polychloride is
50~70g/ ton hour, colloidal solid is larger, and the effect of adsorption and sedimentation is preferable, and is not in remain in plastic microsphere waste water to lead
The problem for causing water body color partially yellow.On the other hand, the dosage of cationic polyacrylamide is equally critically important, if cation polypropylene
When the dosage of amide is too low, will lead to floccule is adhered that effect is weak, and sediment is small；If the dosage mistake of cationic polyacrylamide
The viscosity of Gao Shi, plastic microsphere waste water are got higher, and are unfavorable for filtering；And when the dosage of cationic polyacrylamide is 5-15g/ tons
When, floccule is adhered that effect is preferable, and sediment is larger, and the viscosity of plastic microsphere waste water is lower, is conducive to filtering.
In one embodiment, the aluminium polychloride is polymeric aluminum chlorides solution, and the polymeric aluminum chlorides solution is by gathering
Conjunction aluminium chloride, which is dissolved in the water of 20 times of volumes, to be formulated；Or the ten sulfate dihydrates aluminium ammonium is that ten sulfate dihydrate aluminium ammoniums are molten
Liquid, the ten sulfate dihydrates aluminium ammonium are to be dissolved in the water of 30 times of volumes being formulated by ten sulfate dihydrate aluminium ammoniums；Or the sun
Cationic polyacrylamide is cationic polyacrylamide solution, and the cationic polyacrylamide is by cationic polyacrylamide
It is dissolved in the water of 100 times of volumes and being formulated.It should be noted that in order to make aluminium polychloride, ten sulfate dihydrate aluminium ammoniums and sun
Cationic polyacrylamide can more rapidly incorporate in plastic microsphere waste water, can be by aluminium polychloride, ten sulfate dihydrate aluminium
Ammonium and cationic polyacrylamide respectively it is soluble in water be configured to polymeric aluminum chlorides solution, ten sulfate dihydrate aluminium ammonium salt solutions and sun from
Sub- polyacrylamide solution.Then it is imported in plastic microsphere waste water again, aluminium polychloride, ten sulfate dihydrate aluminium ammoniums can be made in this way
It can more rapidly be incorporated in plastic microsphere waste water with cationic polyacrylamide.
In one embodiment, the operation temperature of the plastic microsphere wastewater treatment recovery method is 25~45 DEG C.For example, institute
The operation temperature for stating plastic microsphere wastewater treatment recovery method is 35 DEG C.It should be noted that temperature raising is conducive to polymerize chlorine
The hydrolysis for changing aluminium and ten sulfate dihydrate aluminium ammoniums, to accelerate the effect of adsorption and sedimentation；But temperature is excessively high, then will lead to side reaction
And the generation of bad air, and will increase heating cost；Under equal conditions by comparison 10 DEG C, 25 DEG C, 35 DEG C, 45 DEG C of four medium temperature
The adsorption and sedimentation effect of degree, adsorption and sedimentation is worst at 10 DEG C, and there are also a large amount of dispersion plastic microspheres for water body, and 25 DEG C, 35 DEG C, 45 DEG C
Effective adsorption and sedimentation can be carried out to plastic microsphere.Therefore it is believed that the best behaviour of the plastic microsphere wastewater treatment recovery method
Making temperature is 25~45 DEG C.
In conclusion experimental principle of the invention:
Al2Cln(OH)6-nHydrolysis: Al2Cln(OH)6-n→Al3++Cl-+OH-
Al3++OH-→Al2(OH)3↓ (colloid)
NH4Al(SO4)2·12H2The hydrolysis of O: NH4Al(SO4)2·12H2O→NH4 ++Al3++SO4-
Al3++H2O→Al2(OH)3↓ (colloid)+H+
By above-mentioned Al2Cln(OH)6-nHydrolysis and NH4Al(SO4)2·12H2The hydrolysis of O can be seen that polymerization
Aluminium chloride hydrolysis generates alumine hydroxide colloid, fetters plastic microsphere in the case where sediment net catches mechanism, and aluminium polychloride has
High charge polymeric rings serobila has height charge neutrality and bridge linking effect to plastic microsphere, plastic microsphere per se with negative electrical charge,
It can be attracted and be fixed by this structure during this, complete neutralization charge/elimination of colloid stability and form tiny wadding body.But simple addition polymerization
It is bad to close aluminium chloride clean-up effect, and the sedimentation time is too long, ten sulfate dihydrate aluminium ammoniums are added on this basis, enhances sediment
Capture effect so that sinking speed is substantially accelerated, and adjusts excessive alkali.It is in colloid, Bu Nengtong that it is soft, which to settle wadding body quality,
It is filtered to remove particle therein, the plastic microsphere in colloid can still go down through strainer, and colloid can block strainer.?
Cationic polyacrylamide is added on the basis of this, further increases the formation of wadding body volume and is adhered structure, using filtering by plastics
Microballoon is separated.
Compared with prior art, the present invention has at least the following advantages:
1, plastic microsphere wastewater treatment recovery method of the invention has filled up the blank of plastic microsphere liquid waste processing.
2, plastic microsphere wastewater treatment recovery method of the invention is to different-grain diameter and the equal energy of different types of plastic microsphere
Good effect is played, it is applied widely.
3, plastic microsphere wastewater treatment recovery method of the invention innovative the adding on aluminium polychloride settling foundation is thrown
Ten sulfate dihydrate aluminium ammoniums, sedimentation duration is greatly shortened in pole.
4, plastic microsphere wastewater treatment recovery method dosage of the invention is few, at low cost, easy to operate, treatment effeciency
Fastly, clean-up effect is up to 100%, is easy to heavy industrialization processing, is also suitable for laboratory treatment.
5, the water 95% after ultrafiltration can be returned directly to the raw water box of water purification system, can increase substantially in this way
The utilization efficiency of water saves water resource.
The following are embodiment parts.
Embodiment 1
Condition: plastic microsphere waste water weight is 1 ton, pH value 5.4, and plastic microsphere concentration is 1mg/ml, plastic microsphere grain
Diameter is 300nm, and operation temperature is 25 DEG C.
A kind of plastic microsphere wastewater treatment recovery method, comprising the following steps: S111 is stirred plastic microsphere waste water
Operation, the speed of agitator control of stirring operation is in 80r/min, and water velocity control is in 0.2m/s, toward the plastic microsphere waste water
The pH value of the plastic microsphere waste water is adjusted to 7.8 by middle addition 48g sodium hydroxide, obtains alkaline plastic microsphere waste water；
S121, continues stirring operation to the alkaline plastic microsphere waste water, and it is poly- that 50g is added into the alkaline plastic microsphere waste water
Aluminium chloride is closed, level-one plastic microsphere waste water containing wadding is obtained；S131 continues to stir to level-one plastic microsphere waste water containing wadding
Ten sulfate dihydrate aluminium ammonium of 50g is added into level-one plastic microsphere waste water containing wadding in operation, and it is useless to obtain second level plastic microsphere containing wadding
Water；Appropriate hydrochloric acid is added into second level plastic microsphere waste water containing wadding by second level plastic microsphere waste water containing wadding by S141
PH value be adjusted to 6.8 after, stop stirring operation, by the second level containing wadding plastic microsphere waste water stand 2 hours to solid-liquid be layered,
Supernatant is discharged, is left heavy wadding turbid, operation is stirred to the heavy wadding turbid, into the heavy wadding turbid addition 5g sun from
Sub- polyacrylamide obtains three-level plastic microsphere waste water containing wadding；S151 pressurizes to three-level plastic microsphere waste water containing wadding
Filter operation obtains floccule containing plastic microsphere and filtrate, carries out ultrafiltration and reverse osmosis to the supernatant and the filtrate
Operation thoroughly, obtains pure water.
Embodiment 2
Condition: plastic microsphere waste water weight is 1 ton, pH value 5.4, and plastic microsphere concentration is 1mg/ml, plastic microsphere grain
Diameter is 300nm, and operation temperature is 25 DEG C.
A kind of plastic microsphere wastewater treatment recovery method, comprising the following steps: S112 is stirred plastic microsphere waste water
Operation, the speed of agitator control of stirring operation is in 100r/min, and water velocity control is in 0.3m/s, toward the plastic microsphere waste water
The pH value of the plastic microsphere waste water is adjusted to 8.0 by middle addition 50g sodium hydroxide, obtains alkaline plastic microsphere waste water；
S122, continues stirring operation to the alkaline plastic microsphere waste water, and it is poly- that 60g is added into the alkaline plastic microsphere waste water
Aluminium chloride is closed, level-one plastic microsphere waste water containing wadding is obtained；S132 continues to stir to level-one plastic microsphere waste water containing wadding
Ten sulfate dihydrate aluminium ammonium of 60g is added into level-one plastic microsphere waste water containing wadding in operation, and it is useless to obtain second level plastic microsphere containing wadding
Water；Appropriate hydrochloric acid is added into second level plastic microsphere waste water containing wadding by second level plastic microsphere waste water containing wadding by S142
PH value be adjusted to 7.0 after, stop stirring operation, by the second level containing wadding plastic microsphere waste water stand 2 hours to solid-liquid be layered,
Supernatant is discharged, is left heavy wadding turbid, operation is stirred to the heavy wadding turbid, 10g sun is added into the heavy wadding turbid
Cationic polyacrylamide obtains three-level plastic microsphere waste water containing wadding；S152 adds three-level plastic microsphere waste water containing wadding
Press filtration operation, obtains floccule containing plastic microsphere and filtrate, to the supernatant and filtrate progress ultrafiltration and instead
Penetration operation obtains pure water.
A small amount of plastic microsphere waste water is taken to carry out the test of 10,000 times of Electronic Speculum, test effect is as shown in figure 3, roundel in Fig. 3
For plastic microsphere.It takes out second level plastic microsphere waste water 1000ml containing wadding and stands 2 hours to solid-liquid layering, stand effect as schemed
Shown in 2.A small amount of supernatant is taken to carry out 10,000 times of Electronic Speculum tests, test effect is as shown in Figure 4.A small amount of filtrate is taken to carry out 20,000 times of electricity
Mirror test, test effect are as shown in Figure 5.The plastic microsphere wastewater treatment recovery method pair of the invention it can be seen from Fig. 2~5
The treatment effeciency of plastic microsphere is very fast in plastic microsphere waste water, clean-up effect is up to 100%.
Embodiment 3
Condition: plastic microsphere waste water weight is 1 ton, pH value 5.4, and plastic microsphere concentration is 1mg/ml, plastic microsphere grain
Diameter is 300nm, and operation temperature is 25 DEG C.
A kind of plastic microsphere wastewater treatment recovery method, comprising the following steps: S113 is stirred plastic microsphere waste water
Operation, the speed of agitator control of stirring operation is in 120r/min, and water velocity control is in 0.4m/s, toward the plastic microsphere waste water
The pH value of the plastic microsphere waste water is adjusted to 8.5 by middle addition 55g sodium hydroxide, obtains alkaline plastic microsphere waste water；
S123, continues stirring operation to the alkaline plastic microsphere waste water, and it is poly- that 70g is added into the alkaline plastic microsphere waste water
Aluminium chloride is closed, level-one plastic microsphere waste water containing wadding is obtained；S133 continues to stir to level-one plastic microsphere waste water containing wadding
Ten sulfate dihydrate aluminium ammonium of 70g is added into level-one plastic microsphere waste water containing wadding in operation, and it is useless to obtain second level plastic microsphere containing wadding
Water；Appropriate hydrochloric acid is added into second level plastic microsphere waste water containing wadding by second level plastic microsphere waste water containing wadding by S143
PH value be adjusted to 7.2 after, stop stirring operation, by the second level containing wadding plastic microsphere waste water stand 2 hours to solid-liquid be layered,
Supernatant is discharged, is left heavy wadding turbid, operation is stirred to the heavy wadding turbid, 15g sun is added into the heavy wadding turbid
Cationic polyacrylamide obtains three-level plastic microsphere waste water containing wadding；S153 adds three-level plastic microsphere waste water containing wadding
Press filtration operation, obtains floccule containing plastic microsphere and filtrate, to the supernatant and filtrate progress ultrafiltration and instead
Penetration operation obtains pure water.
Embodiment 4
Condition: plastic microsphere waste water weight is 1 ton, pH value 5.4, and plastic microsphere concentration is 1mg/ml, plastic microsphere grain
Diameter is 300nm, and operation temperature is 25 DEG C.
A kind of plastic microsphere wastewater treatment recovery method, comprising the following steps: S114 is stirred plastic microsphere waste water
Operation, the speed of agitator control of stirring operation is in 90r/min, and water velocity control is in 0.3m/s, toward the plastic microsphere waste water
The pH value of the plastic microsphere waste water is adjusted to 8.2 by middle addition 52g potassium hydroxide, obtains alkaline plastic microsphere waste water；
S124, continues stirring operation to the alkaline plastic microsphere waste water, and it is poly- that 55g is added into the alkaline plastic microsphere waste water
Aluminium chloride is closed, level-one plastic microsphere waste water containing wadding is obtained；S134 continues to stir to level-one plastic microsphere waste water containing wadding
Ten sulfate dihydrate aluminium ammonium of 55g is added into level-one plastic microsphere waste water containing wadding in operation, and it is useless to obtain second level plastic microsphere containing wadding
Water；Moderate amount of sulfuric acid is added into second level plastic microsphere waste water containing wadding by second level plastic microsphere waste water containing wadding by S144
PH value be adjusted to 7.2 after, stop stirring operation, by the second level containing wadding plastic microsphere waste water stand 2 hours to solid-liquid be layered,
Supernatant is discharged, is left heavy wadding turbid, operation is stirred to the heavy wadding turbid, into the heavy wadding turbid addition 8g sun from
Sub- polyacrylamide obtains three-level plastic microsphere waste water containing wadding；S154 carries out normal pressure to three-level plastic microsphere waste water containing wadding
Filter operation obtains floccule containing plastic microsphere and filtrate, carries out ultrafiltration and reverse osmosis to the supernatant and the filtrate
Operation thoroughly, obtains pure water.
Embodiment 5
Condition: plastic microsphere waste water weight is 1 ton, pH value 5.4, and plastic microsphere concentration is 1mg/ml, plastic microsphere grain
Diameter is 300nm, and operation temperature is 25 DEG C.
A kind of plastic microsphere wastewater treatment recovery method, comprising the following steps: S115 is stirred plastic microsphere waste water
Operation, the speed of agitator control of stirring operation is in 110r/min, and water velocity control is in 0.3m/s, toward the plastic microsphere waste water
The pH value of the plastic microsphere waste water is adjusted to 8.0 by middle addition 50g ammonium hydroxide, obtains alkaline plastic microsphere waste water；S125 is right
The alkalinity plastic microsphere waste water continues stirring operation, and 65g polyaluminium is added into the alkaline plastic microsphere waste water
Aluminium obtains level-one plastic microsphere waste water containing wadding；S135 continues stirring operation to level-one plastic microsphere waste water containing wadding,
Ten sulfate dihydrate aluminium ammonium of 65g is added into level-one plastic microsphere waste water containing wadding, obtains second level plastic microsphere waste water containing wadding；
Appropriate carbonic acid is added into second level plastic microsphere waste water containing wadding by the pH of second level plastic microsphere waste water containing wadding by S145
After value is adjusted to 7.0, stop stirring operation, second level plastic microsphere waste water containing wadding is stood 2 hours to solid-liquid layering, discharge
Supernatant is left heavy wadding turbid, is stirred operation to the heavy wadding turbid, 12g cation is added into the heavy wadding turbid
Polyacrylamide obtains three-level plastic microsphere waste water containing wadding；S155 carries out normal pressure mistake to three-level plastic microsphere waste water containing wadding
Filter operation, obtains floccule containing plastic microsphere and filtrate, to the supernatant and filtrate progress ultrafiltration and reverse osmosis
Operation, obtains pure water.
Although plastic microsphere wastewater treatment recovery method of the invention is developed for plastic microsphere, but same
Suitable for go water removal other electrically charged and particle particle size ranges 10 μm~1mm particulate matter.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of plastic microsphere wastewater treatment recovery method, which comprises the following steps:
Operation is stirred to plastic microsphere waste water, the pH value of the plastic microsphere waste water is adjusted to 7.8~8.5, obtains alkali
Property plastic microsphere waste water；
Aluminium polychloride is added into the alkaline plastic microsphere waste water, obtains level-one plastic microsphere waste water containing wadding；
Ten sulfate dihydrate aluminium ammoniums are added into level-one plastic microsphere waste water containing wadding, obtain second level plastic microsphere waste water containing wadding；
After the pH value of second level plastic microsphere waste water containing wadding is adjusted to 6.8~7.2, Xiang Suoshu second level plastic microsphere containing wadding is useless
Cationic polyacrylamide is added in water, obtains three-level plastic microsphere waste water containing wadding；
Operation is filtered to three-level plastic microsphere waste water containing wadding, obtains floccule containing plastic microsphere.
2. plastic microsphere wastewater treatment recovery method according to claim 1, which is characterized in that three-level modeling containing wadding
After material microballoon waste water is filtered operation, filtrate is also obtained；The plastic microsphere wastewater treatment recovery method further includes following step
It is rapid: Pure water preparation being carried out to the filtrate, obtains pure water.
3. plastic microsphere wastewater treatment recovery method according to claim 2, which is characterized in that second level plastics containing wadding
Microballoon waste water includes heavy wad a quilt with cotton turbid and supernatant, described that cation polypropylene is added into second level plastic microsphere waste water containing wadding
Amide, obtain three-level containing wadding plastic microsphere waste water operation specifically include: by the second level containing wadding plastic microsphere waste water stand to
Solid-liquid layering, is discharged the supernatant, is left the heavy wadding turbid, and cation polypropylene acyl is added into the heavy wadding turbid
Amine is stirred operation to the heavy wadding turbid, obtains three-level plastic microsphere waste water containing wadding.
4. plastic microsphere wastewater treatment recovery method according to claim 3, which is characterized in that the plastic microsphere waste water
It is further comprising the steps of to handle recovery method: Pure water preparation being carried out to the supernatant, obtains pure water.
5. plastic microsphere wastewater treatment recovery method according to claim 2 or 4, which is characterized in that the Pure water preparation
Specially ultrafiltration and reverse osmosis operation wherein at least one.
6. plastic microsphere wastewater treatment recovery method according to claim 1 or 3, which is characterized in that the filter operation
Specially natural filtration operation, pressure filtration operation and vacuum filter operate wherein at least one.
7. plastic microsphere wastewater treatment recovery method according to any one of claims 1 to 4, which is characterized in that described by institute
The pH value for stating plastic microsphere waste water is adjusted to 7.8~8.5 operation and specifically includes: pH tune being added into the plastic microsphere waste water
It saves agent and the pH value of the plastic microsphere waste water is adjusted to 7.8~8.5, the pH adjusting agent is specially sodium hydroxide, hydrogen-oxygen
Change potassium, ammonium hydroxide, hydrochloric acid, sulfuric acid and carbonic acid wherein at least one.
8. plastic microsphere wastewater treatment recovery method according to any one of claims 1 to 4, which is characterized in that described by institute
It states the operation that second level is adjusted to 6.8~7.2 containing the pH value for plastic microsphere waste water of wadding a quilt with cotton to specifically include: micro- toward second level plastics containing wadding
Acid regulator is added in ball waste water, the pH value of second level plastic microsphere waste water containing wadding is adjusted to 6.8~7.2, the acid
Property regulator is specially hydrochloric acid, sulfuric acid and carbonic acid wherein at least one.
9. plastic microsphere wastewater treatment recovery method according to any one of claims 1 to 4, which is characterized in that the stirring
In 80r/min~120r/min, water velocity is controlled in 0.2m/s~0.4m/s for the speed of agitator control of operation.
10. plastic microsphere wastewater treatment recovery method according to any one of claims 1 to 4, which is characterized in that the polymerization
The dosage of aluminium chloride is that 50~70g aluminium polychloride is added in plastic microsphere waste water that plastic microsphere concentration per ton is 1mg/ml；
The dosage of the ten sulfate dihydrates aluminium ammonium be added 50 in plastic microsphere waste water that plastic microsphere concentration per ton is 1mg/ml~
Ten sulfate dihydrate aluminium ammonium of 70g；The dosage of the cationic polyacrylamide is the plastics that plastic microsphere concentration per ton is 1mg/ml
50~70g cationic polyacrylamide is added in microballoon waste water.
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| CN112499896A (en) * | 2020-11-20 | 2021-03-16 | 佛山市三水雄鹰铝表面技术创新中心有限公司 | Method for restoring closed landscape water body by combining ammonium vanadium and aquatic animals and plants |
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Application publication date: 20191022 |