CN104261528A - Flocculating agent as well as preparation method and application thereof - Google Patents
Flocculating agent as well as preparation method and application thereof Download PDFInfo
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- CN104261528A CN104261528A CN201410482481.4A CN201410482481A CN104261528A CN 104261528 A CN104261528 A CN 104261528A CN 201410482481 A CN201410482481 A CN 201410482481A CN 104261528 A CN104261528 A CN 104261528A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/343—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the pharmaceutical industry, e.g. containing antibiotics
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a flocculating agent as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a solution of pulverized fuel ash and sodium silicate with acid to prepare a solution of which the pH value is 2-5, performing polymerization for 3-7 hours at 20-35 DEG C, and aging for 3-12 hours to obtain an aging sample, wherein the mass ratio between the solution of pulverized fuel ash and sodium silicate and acid is (5-8):(1-3); uniformly mixing the aging sample, inorganic aluminum and formaldehyde, and standing and curing at 10-16 DEG C to obtain a curing sample; mixing the curing sample, acrylamide and polydimethyl diallyl ammonium chloride, and standing for 3-10 hours at 30-45 DEG C; and stirring for 5-8 hours at -10 DEG C to -2 DEG C. The flocculating agent obtained by adopting the preparation method disclosed by the invention is wide in spectrum, high in efficiency, good in stability, strong in specificity, excellent in flocculating performance and moderate in cost performance ratio, and also can be used for removing ammonium silver ions, COD, turbidity and chromaticity.
Description
Technical field
The present invention relates to a kind of flocculation agent and its preparation method and application.
Background technology
Flocculation applies one of the most general key link in waste water treatment process, and it affects the operation condition of follow-up flow process, final outflow water quality and cost to a great extent, thus becomes Technological research development field important in environmental engineering.Efficient flocculation technique system should be combined closely and formed by the flocculation agent of excellence, reactor and automatic control three aspects of offeing medicine, and wherein flocculation agent plays the role of a nucleus.The key of flocculation treatment technology selects suitable flocculation agent.
The sorting technique of flocculation agent is a lot, different by composition, generally can be divided into inorganic flocculating agent, organic floculant, natural flocculating agent; According to charged character after the height of flocculating agent molecule amount, the feature of functional group and functional group's dissociation, be divided into polymer, low molecule, cationic, anionic and flocculant in non-ion type.Wherein, inorganic flocculating agent can be divided into the large class of aluminium salt system and molysite system two by metal-salt, and aluminium salt is based on Tai-Ace S 150, aluminum chloride, and molysite is based on ferric sulfate, iron(ic) chloride.Inorganic polymer flocculant is the class novel flocculant grown up on traditional molysite, aluminium salt basis the sixties in 20th century, be main product and the main direction of studying of inorganic flocculating agent, mainly comprise polyaluminium sulfate, polymerize aluminum chloride, bodied ferric sulfate, poly-ferric chloride etc.Inorganic polymer flocculant has better flocculating effect than original traditional medicament and phase dutiable value is lower, and in Japan, Russia, West Europe, Chinese production and the application all having considerable scale, the production of polymeric type medicament accounts for the 30-60% of flocculation agent total amount.
The flocculation agent of current routine, unsatisfactory to the treatment effect of waste water, particularly bad to the removal effect of dissolubility pollutant in water.Therefore, developing a kind of cheap and flocculation agent that flocculating effect is good, is problem demanding prompt solution in prior art.
Summary of the invention
Technical problem to be solved by this invention is that to overcome About Flocculating Effect of Flocculant in prior art not good, can not remove the defect of COD, turbidity and colourity simultaneously, provide a kind of flocculation agent and its preparation method and application.The flocculation agent wide spectrum that preparation method of the present invention obtains, efficient, good stability, specificity are strong, flocculating property is excellent, the ratio of performance to price is moderate, can remove ammonium silver ions, COD, turbidity and colourity simultaneously.
The present invention solves the problems of the technologies described above by the following technical programs:
An object of the present invention is, provides a kind of preparation method of flocculation agent, and described preparation method comprises the following steps:
(1) solution of flyash, water glass and acid are mixed, obtain the solution of pH2-5, polyase 13-7h under 20-35 DEG C of condition, ageing 3-12h, obtain ageing sample; Described flyash and the mass ratio of water glass are (5-8): (1-3);
(2) ageing sample, inorganic aluminium and formaldehyde that step (1) obtains are mixed, static slaking under 10-16 DEG C of condition, the mol ratio of described inorganic aluminium, formaldehyde and water glass is (1-2): (0.5-1): 1, obtains slaking sample;
(3) described slaking sample is mixed with acrylamide, Poly Dimethyl Diallyl Ammonium Chloride, static 3-10h under 30-45 DEG C of condition, the mol ratio of described acrylamide, Poly Dimethyl Diallyl Ammonium Chloride and water glass is (3-4.5): (1-2): 1;
(4) 5-8h is stirred at-10 ~-2 DEG C.
Below, following explanation is done to the preferred further technical scheme of technique scheme:
In step (1), described acid is this area general inorganic acid, is preferably sulfuric acid and/or hydrochloric acid.The concentration of described acid is preferably 1-2mol/L.The mol ratio of described water glass and acid is preferably 1: (0.1-0.8).
In step (1), the temperature of described polymerization is preferably 25-30 DEG C.The time of described polymerization is preferably 5h.The time of described ageing is preferably 5-10h.
In step (1), the better quality of described flyash and water glass ground is than being 3: 1.
In step (2), the temperature of described slaking is preferably 15 DEG C.
In step (3), described static temperature is preferably 35-40 DEG C.The described static time is preferably 5-7h.
In step (3), the mol ratio of described acrylamide, Poly Dimethyl Diallyl Ammonium Chloride and water glass is preferably 4: 1: 1.
In the present invention, the technique of step (4) has the effect of outbalance for whole technical scheme, on this basis, in conjunction with all the other processing steps and condition, realizes the excellent effect that flocculating property is excellent, remove COD, turbidity and colourity simultaneously.In step (4), preferably stir 6-7.5h at-5 ~-2 DEG C.
Two of object of the present invention is, provides the flocculation agent that the preparation method of flocculation agent as above obtains.
Three of object of the present invention is, provide flocculation agent as above flocculation seawater, trade effluent, pharmacy waste water and domestic water in one or more in application.Described trade effluent is preferably paper waste.The addition of described flocculation agent is preferably 15-40ppm.Ppm is herein the amount that described flocculation agent accounts for whole waste water.
Positive progressive effect of the present invention is: the flocculation agent wide spectrum that preparation method of the present invention obtains, efficient, good stability, specificity are strong, flocculating property is excellent, the ratio of performance to price is moderate, can remove ammonium silver ions, COD, turbidity and colourity simultaneously.
Embodiment
Mode below by embodiment further illustrates the present invention, but does not therefore limit the present invention among described scope of embodiments.The experimental technique of unreceipted actual conditions in the following example, conventionally and condition, or selects according to catalogue.
Embodiment 1
(1) by even for the mixed in hydrochloric acid of the solution of flyash, water glass and 1mol/L, obtain the solution of pH2, under 25 DEG C of conditions, be polymerized 5h, ageing 10h, obtain ageing sample; The mass ratio 3: 1 of flyash and water glass; The mol ratio of water glass and acid is 1: 0.4;
(2) ageing sample, inorganic aluminium and formaldehyde that step (1) obtains are mixed, static slaking under 15 DEG C of conditions, the mol ratio of inorganic aluminium, formaldehyde and water glass is 1: 1: 1, obtains slaking sample;
(3) mixed with acrylamide, Poly Dimethyl Diallyl Ammonium Chloride by slaking sample, static 5h under 35 DEG C of conditions, the mol ratio of acrylamide, Poly Dimethyl Diallyl Ammonium Chloride and water glass is 4: 1: 1;
(4) 7.5h is stirred at-5 DEG C.
Embodiment 2
(1) solution of flyash, water glass and the sulfuric acid of 2mol/L are mixed, obtain the solution of pH5, under 30 DEG C of conditions, be polymerized 5h, ageing 5h, obtain ageing sample; The mass ratio 3: 1 of flyash and water glass; The mol ratio of water glass and acid is 1: 0.5;
(2) ageing sample, inorganic aluminium and formaldehyde that step (1) obtains are mixed, static slaking under 15 DEG C of conditions, the mol ratio of inorganic aluminium, formaldehyde and water glass is 2: 1: 1, obtains slaking sample;
(3) mixed with acrylamide, Poly Dimethyl Diallyl Ammonium Chloride by slaking sample, static 7h under 40 DEG C of conditions, the mol ratio of acrylamide, Poly Dimethyl Diallyl Ammonium Chloride and water glass is 4: 1: 1;
(4) 6h is stirred at-2 DEG C.
Embodiment 3
(1) solution of flyash, water glass and the sulfuric acid of 1mol/L are mixed, obtain the solution of pH2, polymerase 17 h under 20 DEG C of conditions, ageing 12h, obtain ageing sample; The mass ratio 5: 1 of flyash and water glass; The mol ratio of water glass and acid is 1: 0.1;
(2) ageing sample, inorganic aluminium and formaldehyde that step (1) obtains are mixed, static slaking under 16 DEG C of conditions, the mol ratio of inorganic aluminium, formaldehyde and water glass is 2: 0.5: 1, obtains slaking sample;
(3) mixed with acrylamide, Poly Dimethyl Diallyl Ammonium Chloride by slaking sample, static 10h under 30 DEG C of conditions, the mol ratio of acrylamide, Poly Dimethyl Diallyl Ammonium Chloride and water glass is 3: 2: 1;
(4) 5h is stirred at-10 DEG C.
Embodiment 4
(1) by even for the mixed in hydrochloric acid of the solution of flyash, water glass and 2mol/L, obtain the solution of pH2, polyase 13 h under 35 DEG C of conditions, ageing 3h, obtain ageing sample; The mass ratio 8: 1 of flyash and water glass; The mol ratio of water glass and acid is 1: 0.8;
(2) ageing sample, inorganic aluminium and formaldehyde that step (1) obtains are mixed, static slaking under 10 DEG C of conditions, the mol ratio of inorganic aluminium, formaldehyde and water glass is 2: 1: 1, obtains slaking sample;
(3) mixed with acrylamide, Poly Dimethyl Diallyl Ammonium Chloride by slaking sample, static 3h under 45 DEG C of conditions, the mol ratio of acrylamide, Poly Dimethyl Diallyl Ammonium Chloride and water glass is 4.5: 1.5: 1;
(4) 8h is stirred at-2 DEG C.
Comparative example 1
In step (1), digestion time is 15h, and all the other processing parameters and condition are with embodiment 1.
Comparative example 2
In step (2), curing temperature is 20 DEG C, and all the other processing parameters and condition are with embodiment 1.
Comparative example 3
In step (3), static temperature is 25 DEG C, and all the other processing parameters and condition are with embodiment 1.
Comparative example 4
Do not have step (4), all the other processing parameters and condition are with embodiment 1.
Effect example 1
Turbidity removal effect detection
Experimental technique: diatomite suspension liquid is simulated water sample.Diatomite through 150 mesh sieve in advance at 100 DEG C of dry 1h, for subsequent use.After take 1g diatomite, add distilled water and be modulated into pasty state, grinding, then moves in beaker, adds water to 1000mL, and regulate pH8, water temperature 25 DEG C, stirs, and measuring turbidity is 500.Add the flocculation agent of 20ppm, under 200rpm condition, stir 2min, under 50rpm condition, stir 5min, quiescent settling 5min, get supernatant liquor and survey residual turbidity with reference to " water and effluent monitoring analytical procedure ".
Measuring result: as shown in table 1.
Table 1 turbidity measurements
Effect example 2
COD clearance effect detection
Experimental technique: get 1g diatomite and add 0.5g quaternary ammonium salt, be configured to suspension liquid, adds 15ppm flocculation agent and carries out floc test, and COD measuring method carries out with reference to complex acid potassium method heavy in " water and effluent monitoring analytical procedure ".
Measuring result: as shown in table 2.
Table 2COD removal effect
Effect example 3
Remove the effect detection of ammonium silver ions
Experimental technique: joined by ammonium chloride in diatomite suspension liquid, is configured to the suspension liquid containing ammonium ion, adds the flocculation agent of 20ppm, stir 3min under 150rpm condition, get supernatant liquor Berthelot spectrophotometry and measure remaining ammonium amount.
Measuring result: as shown in table 3.
The removal effect of ammonium silver ions removed by table 3
Effect example 4
The detection of chromaticity removing effect
Experimental technique: get antibiotic pharmaceutical wastewater, waste water from dyestuff and bleaching and dyeing wastewater respectively, adds the flocculation agent of 15ppm, detects the colourity adding front and back water body.
Experimental result: as shown in table 4.
Table 4 chromaticity removing effect
Claims (10)
1. a preparation method for flocculation agent, is characterized in that: described preparation method comprises the following steps:
(1) solution of flyash, water glass and acid are mixed, obtain the solution of pH2-5, polyase 13-7h under 20-35 DEG C of condition, ageing 3-12h, obtain ageing sample; Described flyash and the mass ratio of water glass are (5-8): (1-3);
(2) ageing sample, inorganic aluminium and formaldehyde that step (1) obtains are mixed, static slaking under 10-16 DEG C of condition, the mol ratio of described inorganic aluminium, formaldehyde and water glass is (1-2): (0.5-1): 1, obtains slaking sample;
(3) described slaking sample is mixed with acrylamide, Poly Dimethyl Diallyl Ammonium Chloride, static 3-10h under 30-45 DEG C of condition, the mol ratio of described acrylamide, Poly Dimethyl Diallyl Ammonium Chloride and water glass is (3-4.5): (1-2): 1;
(4) 5-8h is stirred at-10 ~-2 DEG C.
2. preparation method as claimed in claim 1, it is characterized in that: in step (1), described acid is sulfuric acid and/or hydrochloric acid; The concentration of described acid is 1-2mol/L.
3. preparation method as claimed in claim 1, is characterized in that: in step (1), and the mol ratio of described water glass and acid is 1: (0.1-0.8).
4. preparation method as claimed in claim 1, it is characterized in that: in step (1), the temperature of described polymerization is 25-30 DEG C; The time of described polymerization is 5h; The time of described ageing is 5-10h; Described flyash and the mass ratio of water glass are 3: 1.
5. preparation method as claimed in claim 1, is characterized in that: in step (2), described slaking be 15 DEG C warmly.
6. preparation method as claimed in claim 1, it is characterized in that: in step (3), described static temperature is 35-40 DEG C; The described static time is 5-7h; The mol ratio of described acrylamide, Poly Dimethyl Diallyl Ammonium Chloride and water glass is 4: 1: 1.
7. preparation method as claimed in claim 1, is characterized in that: in step (4), stirs 6-7.5h at-5 ~-2 DEG C.
8. the flocculation agent that the preparation method of the flocculation agent according to any one of claim 1-7 obtains.
9. the application in one or more in flocculation seawater, trade effluent, pharmacy waste water and domestic water of flocculation agent as claimed in claim 8.
10. apply as claimed in claim 9, it is characterized in that: the addition of described flocculation agent is 15-40ppm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410482481.4A CN104261528A (en) | 2014-09-10 | 2014-09-10 | Flocculating agent as well as preparation method and application thereof |
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| CN201410482481.4A CN104261528A (en) | 2014-09-10 | 2014-09-10 | Flocculating agent as well as preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600852A (en) * | 2016-03-31 | 2016-05-25 | 太仓市锦达印染有限公司 | Dyeing waste water treating agent and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600852A (en) * | 2016-03-31 | 2016-05-25 | 太仓市锦达印染有限公司 | Dyeing waste water treating agent and preparation method thereof |
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