CN108640484A - A kind of preparation method of sludge dehydrating agent - Google Patents
A kind of preparation method of sludge dehydrating agent Download PDFInfo
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- CN108640484A CN108640484A CN201810543614.2A CN201810543614A CN108640484A CN 108640484 A CN108640484 A CN 108640484A CN 201810543614 A CN201810543614 A CN 201810543614A CN 108640484 A CN108640484 A CN 108640484A
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
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- Hydrology & Water Resources (AREA)
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- Treatment Of Sludge (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of preparation methods of sludge dehydrating agent, belong to field of environment protection.The present invention utilizes Iron trichloride hexahydrate, sodium borohydride prepares zeroth order Fe nanometer particles, it is to react to realize by two-electron shift that sulfuric acid Zero-valent Iron therein, which is added, and is converted to ferrous oxidation reaction, oxygen molecule has been activated into hydrogen peroxide, it is adsorbed on the electrophilic oxygen molecule capture on surface again after electronics transfer to ferriferous oxide nuclear shell, there is pre-oxidation effect to sludge, the smaller substance of molecular weight can be degraded into, in favor of being discharged in conjunction with water and being converted into Free water, accelerate the release of water, generate hydroxyl radical free radical simultaneously, sludge is decomposed, accelerate dehydration, shorten dewatering time.It is long that the present invention solves current sludge dehydrating agent dewatering time, will produce in the process a large amount of with gases frowzy, the low problem of dehydrating effect.
Description
Technical field
The invention belongs to field of environment protection, and in particular to a kind of preparation method of sludge dehydrating agent.
Background technology
Sludge is the final product of sewage disposal, and pollutant concentration degree is high, and comparison of ingredients is complicated, and the content of organic matter is high, parent
It is aqueous strong.It is based on aerobic, anaerobe, while it is residual to be also mixed into the silt particle, fiber, animals and plants carried in raw sewage
The mixture of the Various Complexes such as organic matter, metal, germ, worm's ovum, the colloid of body and absorption on it.Dirt for large size city
For water treatment plant, due to there is a large amount of industrial wastewater to be discharged into system, cause the content of beary metal in sewage sludge higher, wherein
Often the receiving standard near or above sludge as agricultural compost, the sludge being discharged from sewage treatment plant are general for copper, Zn content
It is a kind of loose, glue-dissolving shape lotion object of the water content 95 ~ 99%, with light specific gravity, bulky, thixotropy is strong（It is not easy to take off
Water）, have the characteristics that the physics and chemistry of easily corrupt stench, thus be extremely unfavorable for processing and transport.Sludge dewatering is as most important
Pretreatment process is to reduce sludge subsequent processing and the very the key link of cost of disposal one, sludge dewatering can greatly subtract
The accumulation place of few sludge minimizes transport costs, and reduces the percolate of landfill yard, prevents from filling to earth's surface and groundwater environment
It destroys.When carrying out compost treatment to sludge, sludge dewatering can substantially reduce moisture percentage in sewage sludge, so as to meet compost to low
The requirement of water content sludge.A large amount of moisture is usually contained in sludge, causes the volume of sludge very huge, it is therefore necessary to dirt
Mud is carried out dehydrating, to reduce the volume of sludge.
At present frequently with method be to be improved sludge with one or more of chemical agents, to change mud granule
Property, convenient for the removal of contained humidity in sludge.Most common sludge dehydrating agent is cationic-type polyacrylamide（CPAM）、
Polyacrylamide, molysite, aluminium salt, white lime etc., but dehydrating agent principle is mainly to destroy the cell of microorganism in sludge at present
Wall, discharge cell in contain largely combine water, using natural air drying method removal sludge in moisture, cause dehydration take
It is long, and will produce during air-drying a large amount of with gas frowzy.Therefore, producing a kind of can meet requirement
Sludge dehydrating agent it is particularly significant.
Invention content
The technical problems to be solved by the invention：It is long for current sludge dehydrating agent dewatering time, it will produce in the process big
Amount provides a kind of preparation method of sludge dehydrating agent with gas frowzy, the low problem of dehydrating effect.
In order to solve the above technical problems, the present invention is using technical solution as described below：
A kind of preparation method of sludge dehydrating agent, which is characterized in that the preparation method includes the following steps：
（1）Take magnesium nitrate in mass ratio 1 ~ 3：1~4：5 ~ 7 addition aluminum nitrates, deionized water are stirred 20 ~ 30min, must stir
Mixture takes sodium carbonate 5 ~ 7：2~4：10 ~ 13 are added sodium hydroxide, deionized water mixing, must stir mixture a, take stirring mixed
Close object object a in mass ratio 5：3 are added stirring mixture, and the ammonium hydroxide that a concentration of 0.5mol/L is added adjusts pH to 9 ~ 9.5, and stirring is mixed
5 ~ 8min is closed, 15 ~ 18h is aged in 60 ~ 65 DEG C, dialysis concentration is dry, obtains dried object；
（2）Take acrylamide in mass ratio 1 ~ 3：2~4：4 ~ 7 are added dried object, distilled water mixing, add acrylamide quality
10 ~ 20% acryloxyethyldimethyl benzyl ammonium chloride is stirred 30 ~ 40min in 30 ~ 40 DEG C, obtains mixture, takes mixed
Close object in mass ratio 80 ~ 90：1 is added urea, adjusts pH to 4 ~ 5, is passed through nitrogen protection, adds the idol of urea quality 20 ~ 30%
Two NSC 18620 hydrochloride of nitrogen irradiates 50 ~ 60min under ultraviolet light, then at 30 ~ 40 DEG C of 12 ~ 15h of heat preservation, obtains matrix object；
（3）Take Iron trichloride hexahydrate in mass ratio 3 ~ 8：80 ~ 100 are added deionized water mixing, obtain mixed liquor, take borane sodium by matter
Measure ratio 6 ~ 9：60 ~ 80 are added deionized water mixing, obtain mixed liquor A, take mixed liquor A in mass ratio 2：3 are added mixed liquors, in 25 ~
30 DEG C are stirred 2 ~ 3h, stand 3 ~ 5h, and filtering takes filter residue and drying, obtains dried object a, takes dried object a in mass ratio 2：5 ~ 7 add
Enter the mixing of matrix object, obtains sludge dehydrating agent base-material；
（4）Take rosin in mass ratio 1：5 ~ 7 addition distilled water obtain microwave object, take microwave object by matter in 130W, 50 ~ 60 DEG C of microwaves
Measure ratio 1 ~ 3：5 ~ 9 are added petroleum ether, in 40 ~ 50 DEG C of extractions, take upper liquid to be evaporated under reduced pressure, vacuum distillation object are obtained, by mass fraction
Meter takes sulfuric acid, 30 ~ 50 that 200 ~ 300 parts of sludge dehydrating agent base-materials, 40 ~ 60 parts of vacuum distillation objects, 2 ~ 5 parts of mass fractions are 98%
Part polyethylene glycol, 12 ~ 15 parts of oleyl amine polyoxyethylene ether, 3 ~ 7 parts of Tween-20s, 15 ~ 20 parts of propylene glycol, 30 ~ 50 parts of water, in 30 ~ 40
It DEG C is stirred to get sludge dehydrating agent.
Compared with other methods, advantageous effects are the present invention：
（1）The present invention is co-precipitated using magnesium nitrate, aluminum nitrate, is obtained intercalation additive, can be removed into use
Small multiple synusia clusters or synusia form secondary polyampholyte molecule, and can not only increase activating agent in unit volume has
Content is imitated, and skeleton is accelerated further to hydrolyze process, hydrolytic process generates a large amount of Mg (OH)2With Al (OH)3 Floccule, can
Organic impurity molecule is adsorbed, while hydrolyzing and a large amount of Mg is provided2+、Al3+The positive charge of ion, institute's band can neutralize in sewage or sludge
Negatively charged ion or ion floc sedimentation, the effective distance for the electric double layer that furthers, in these structure feature can significantly increase
Flocculating effect；
（2）The present invention utilizes acrylamide monomer and the acryloxyethyldimethyl benzyl ammonium chloride monomer with amphiphilic structure
In ultraviolet light-initiated lower carry out polymerisation, synthesis has both ionic group on this basis and the cation hydrophobic of hydrophobic grouping is formed
Flocculant is closed, it is intermolecular and intramolecular that the hydrophobic grouping interaction in hydrophobic association polyacrylamide makes macromolecular chain occur
Association, forms reversible three dimensional physical cross-linked structure, can enhance the interaction of polymer and water small molecular, improves
Flocculation efficiency；
（3）The present invention prepares zeroth order Fe nanometer particles using Iron trichloride hexahydrate, sodium borohydride, and sulfuric acid Zero-valent Iron therein is added and turns
It is to react to realize by two-electron shift to be changed to ferrous oxidation reaction, and oxygen molecule has been activated into hydrogen peroxide, has worked as electricity
Son is transferred to the electrophilic oxygen molecule capture that ferriferous oxide nuclear shell is adsorbed on surface again later, has pre-oxidation effect to sludge,
The smaller substance of molecular weight can be degraded into, in favor of discharging and being converted into Free water in conjunction with water, accelerates the release of water, simultaneously
Hydroxyl radical free radical is generated, sludge is decomposed, accelerates dehydration, shortens dewatering time；
（4）The present invention is extracted by raw material of rosin, and main component is australene, nopinene, is a kind of natural easily to wave
The aromatic oil of hair, due to containing alkaloid, plant extraction liquid can react with acid foul smell molecule in sludge, and general soda acid
It is toxic to react the salt generated, and cannot be biodegradable, but plant extraction liquid is nontoxic and biodegradable, and mist is passed through in extracting solution
The drop of change has prodigious specific surface area and surface energy, therefore can destroy the chemical combination key in the molecule of pollutant, makes its molecule
Spatial configuration change, achieve the effect that decompose the foul smell molecule.
Specific implementation mode
A kind of preparation method of sludge dehydrating agent, the preparation method include the following steps：
（1）Take magnesium nitrate in mass ratio 1 ~ 3：1~4：5 ~ 7 addition aluminum nitrates, deionized water are stirred 20 ~ 30min, must stir
Mixture takes sodium carbonate 5 ~ 7：2~4：10 ~ 13 are added sodium hydroxide, deionized water mixing, must stir mixture a, take stirring mixed
Close object object a in mass ratio 5：3 are added stirring mixture, and the ammonium hydroxide that a concentration of 0.5mol/L is added adjusts pH to 9 ~ 9.5, and stirring is mixed
5 ~ 8min is closed, 15 ~ 18h is aged in 60 ~ 65 DEG C, dialysis concentration is dry, obtains dried object；
（2）Take acrylamide in mass ratio 1 ~ 3：2~4：4 ~ 7 are added dried object, distilled water mixing, add acrylamide quality
10 ~ 20% acryloxyethyldimethyl benzyl ammonium chloride is stirred 30 ~ 40min in 30 ~ 40 DEG C, obtains mixture, takes mixed
Close object in mass ratio 80 ~ 90：1 is added urea, adjusts pH to 4 ~ 5, is passed through nitrogen protection, adds the idol of urea quality 20 ~ 30%
Two NSC 18620 hydrochloride of nitrogen irradiates 50 ~ 60min under ultraviolet light, then at 30 ~ 40 DEG C of 12 ~ 15h of heat preservation, obtains matrix object；
（3）Take Iron trichloride hexahydrate in mass ratio 3 ~ 8：80 ~ 100 are added deionized water mixing, obtain mixed liquor, take borane sodium by matter
Measure ratio 6 ~ 9：60 ~ 80 are added deionized water mixing, obtain mixed liquor A, take mixed liquor A in mass ratio 2：3 are added mixed liquors, in 25 ~
30 DEG C are stirred 2 ~ 3h, stand 3 ~ 5h, and filtering takes filter residue and drying, obtains dried object a, takes dried object a in mass ratio 2：5 ~ 7 add
Enter the mixing of matrix object, obtains sludge dehydrating agent base-material；
（4）Take rosin in mass ratio 1：5 ~ 7 addition distilled water obtain microwave object, take micro- in 130W, 50 ~ 60 DEG C of 20 ~ 30min of microwave
Wave object in mass ratio 1 ~ 3：5 ~ 9 are added petroleum ether, extract 2 ~ 3h in 40 ~ 50 DEG C, take upper liquid to be evaporated under reduced pressure, must be evaporated under reduced pressure
Object takes 200 ~ 300 parts of sludge dehydrating agent base-materials, 40 ~ 60 parts of vacuum distillations object, 2 ~ 5 parts of mass fractions to be according to the mass fraction
98% sulfuric acid, 30 ~ 50 parts of polyethylene glycol, 12 ~ 15 parts of oleyl amine polyoxyethylene ether, 3 ~ 7 parts of Tween-20s, 15 ~ 20 parts of propylene glycol, 30
~ 50 parts of water are stirred 1 ~ 2h to get sludge dehydrating agent in 30 ~ 40 DEG C.
A kind of preparation method of sludge dehydrating agent, the preparation method include the following steps：
（1）Take magnesium nitrate in mass ratio 1：1：5 addition aluminum nitrates, deionized water are stirred 20min, obtain stirring mixture, take
Sodium carbonate 5：2：10 are added sodium hydroxide, deionized water mixing, must stir mixture a, take stirring mixture object a in mass ratio 5：
3 are added stirring mixture, and the ammonium hydroxide that a concentration of 0.5mol/L is added adjusts pH to 9, is stirred 5min, and 15h is aged in 60 DEG C,
Dialysis concentration, it is dry, obtain dried object；
（2）Take acrylamide in mass ratio 1：2：4 are added dried object, distilled water mixing, add the third of acrylamide quality 10%
Alkene acyloxyethyl dimethyl benzyl ammonium chloride is stirred 30min in 30 DEG C, obtains mixture, takes mixture in mass ratio 80：1
Urea is added, adjusts pH to 4, is passed through nitrogen protection, the azo-bis-isobutyrate hydrochloride of urea quality 20% is added, in ultraviolet
50min is irradiated under light, then at 30 DEG C of heat preservation 12h, obtains matrix object；
（3）Take Iron trichloride hexahydrate in mass ratio 3：80 are added deionized water mixing, obtain mixed liquor, take borane sodium in mass ratio 6：
60 are added deionized water mixing, obtain mixed liquor A, take mixed liquor A in mass ratio 2：3 are added mixed liquor, and 2h is stirred in 25 DEG C,
3h is stood, filtering takes filter residue and drying, obtains dried object a, takes dried object a in mass ratio 2：5 are added the mixing of matrix object, and it is de- to obtain sludge
Aqua base-material；
（4）Take rosin in mass ratio 1：5 addition distilled water obtain microwave object, take microwave object by matter in 130W, 50 DEG C of microwave 20min
Measure ratio 1：5 are added petroleum ether, extract 2h in 40 DEG C, take upper liquid to be evaporated under reduced pressure, obtain vacuum distillation object, according to the mass fraction, take
The sulfuric acid, 30 parts of polyethylene glycol, 12 parts of oil that 200 parts of sludge dehydrating agent base-materials, 40 parts of vacuum distillation objects, 2 parts of mass fractions are 98%
Amine polyoxyethylene ether, 3 parts of Tween-20s, 15 parts of propylene glycol, 30 parts of water, 1h is stirred to get sludge dehydrating agent in 30 DEG C.
A kind of preparation method of sludge dehydrating agent, the preparation method include the following steps：
（1）Take magnesium nitrate in mass ratio 3：4：7 addition aluminum nitrates, deionized water are stirred 30min, obtain stirring mixture, take
Sodium carbonate 7：4：13 are added sodium hydroxide, deionized water mixing, must stir mixture a, take stirring mixture object a in mass ratio 5：
3 are added stirring mixture, and the ammonium hydroxide that a concentration of 0.5mol/L is added adjusts pH to 9.5, is stirred 8min, in 65 DEG C of ageings
18h, dialysis concentration is dry, obtains dried object；
（2）Take acrylamide in mass ratio 3：4：7 are added dried object, distilled water mixing, add the third of acrylamide quality 20%
Alkene acyloxyethyl dimethyl benzyl ammonium chloride is stirred 40min in 40 DEG C, obtains mixture, takes mixture in mass ratio 90：1
Urea is added, adjusts pH to 5, is passed through nitrogen protection, the azo-bis-isobutyrate hydrochloride of urea quality 30% is added, in ultraviolet
60min is irradiated under light, then at 40 DEG C of heat preservation 15h, obtains matrix object；
（3）Take Iron trichloride hexahydrate in mass ratio 8：100 are added deionized water mixing, obtain mixed liquor, take borane sodium in mass ratio
9：80 are added deionized water mixing, obtain mixed liquor A, take mixed liquor A in mass ratio 2：3 are added mixed liquor, are stirred in 30 DEG C
3h, stands 5h, and filtering takes filter residue and drying, obtains dried object a, takes dried object a in mass ratio 2：7 are added the mixing of matrix object, obtain sludge
Dehydrating agent base-material；
（4）Take rosin in mass ratio 1：7 addition distilled water obtain microwave object, take microwave object by matter in 130W, 60 DEG C of microwave 30min
Measure ratio 3：9 are added petroleum ether, extract 3h in 50 DEG C, take upper liquid to be evaporated under reduced pressure, obtain vacuum distillation object, according to the mass fraction, take
The sulfuric acid, 50 parts of polyethylene glycol, 15 parts of oil that 300 parts of sludge dehydrating agent base-materials, 60 parts of vacuum distillation objects, 5 parts of mass fractions are 98%
Amine polyoxyethylene ether, 7 parts of Tween-20s, 20 parts of propylene glycol, 50 parts of water, 2h is stirred to get sludge dehydrating agent in 40 DEG C.
A kind of preparation method of sludge dehydrating agent, the preparation method include the following steps：
（1）Take magnesium nitrate in mass ratio 2：3：6 addition aluminum nitrates, deionized water are stirred 25min, obtain stirring mixture, take
Sodium carbonate 6：3：12 are added sodium hydroxide, deionized water mixing, must stir mixture a, take stirring mixture object a in mass ratio 5：
3 are added stirring mixture, and the ammonium hydroxide that a concentration of 0.5mol/L is added adjusts pH to 9, is stirred 7min, and 17h is aged in 63 DEG C,
Dialysis concentration, it is dry, obtain dried object；
（2）Take acrylamide in mass ratio 2：3：5 are added dried object, distilled water mixing, add the third of acrylamide quality 15%
Alkene acyloxyethyl dimethyl benzyl ammonium chloride is stirred 35min in 35 DEG C, obtains mixture, takes mixture in mass ratio 85：1
Urea is added, adjusts pH to 4, is passed through nitrogen protection, the azo-bis-isobutyrate hydrochloride of urea quality 25% is added, in ultraviolet
55min is irradiated under light, then at 35 DEG C of heat preservation 13h, obtains matrix object；
（3）Take Iron trichloride hexahydrate in mass ratio 5：90 are added deionized water mixing, obtain mixed liquor, take borane sodium in mass ratio 7：
70 are added deionized water mixing, obtain mixed liquor A, take mixed liquor A in mass ratio 2：3 are added mixed liquor, and 2h is stirred in 27 DEG C,
4h is stood, filtering takes filter residue and drying, obtains dried object a, takes dried object a in mass ratio 2：6 are added the mixing of matrix object, and it is de- to obtain sludge
Aqua base-material；
（4）Take rosin in mass ratio 1：6 addition distilled water obtain microwave object, take microwave object by matter in 130W, 55 DEG C of microwave 25min
Measure ratio 2：7 are added petroleum ether, extract 2h in 45 DEG C, take upper liquid to be evaporated under reduced pressure, obtain vacuum distillation object, according to the mass fraction, take
The sulfuric acid, 40 parts of polyethylene glycol, 16 parts of oil that 250 parts of sludge dehydrating agent base-materials, 50 parts of vacuum distillation objects, 7 parts of mass fractions are 98%
Amine polyoxyethylene ether, 5 parts of Tween-20s, 17 parts of propylene glycol, 40 parts of water, 1h is stirred to get sludge dehydrating agent in 35 DEG C.
Comparative example：The sludge dehydrating agent of company of Suzhou City production.
The sludge dehydrating agent of sludge dehydrating agent made from above-described embodiment and comparative example is respectively applied to certain municipal sewage
Treatment plant's sludge to be drained off（Moisture content 96% ~ 98%, pH value 6.8）, dosage 50mg/L observes and records after 1 day as a result, surveying
Test result is shown in Table 1.
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example |
| Moisture content % after processing | 30.1 | 31.4 | 32.3 | 52.6~53.7 |
| Solution rate | Comparatively fast | Comparatively fast | Comparatively fast | Slowly |
| Have ordorless | Nothing | Nothing | Nothing | Have |
In summary, sewage dehydrating agent dehydrating effect of the invention is more preferable and has good environment friendly, is worth pushing away
Extensively.
Claims (1)
1. a kind of preparation method of sludge dehydrating agent, which is characterized in that the preparation method includes the following steps：
（1）Take magnesium nitrate in mass ratio 1 ~ 3：1~4：5 ~ 7 addition aluminum nitrates, deionized water are stirred 20 ~ 30min, must stir
Mixture takes sodium carbonate 5 ~ 7：2~4：10 ~ 13 are added sodium hydroxide, deionized water mixing, must stir mixture a, take stirring mixed
Close object object a in mass ratio 5：3 are added stirring mixture, and the ammonium hydroxide that a concentration of 0.5mol/L is added adjusts pH to 9 ~ 9.5, and stirring is mixed
5 ~ 8min is closed, 15 ~ 18h is aged in 60 ~ 65 DEG C, dialysis concentration is dry, obtains dried object；
（2）Take acrylamide in mass ratio 1 ~ 3：2~4：4 ~ 7 are added dried object, distilled water mixing, add acrylamide quality
10 ~ 20% acryloxyethyldimethyl benzyl ammonium chloride is stirred 30 ~ 40min in 30 ~ 40 DEG C, obtains mixture, takes mixed
Close object in mass ratio 80 ~ 90：1 is added urea, adjusts pH to 4 ~ 5, is passed through nitrogen protection, adds the idol of urea quality 20 ~ 30%
Two NSC 18620 hydrochloride of nitrogen irradiates 50 ~ 60min under ultraviolet light, then at 30 ~ 40 DEG C of 12 ~ 15h of heat preservation, obtains matrix object；
（3）Take Iron trichloride hexahydrate in mass ratio 3 ~ 8：80 ~ 100 are added deionized water mixing, obtain mixed liquor, take borane sodium by matter
Measure ratio 6 ~ 9：60 ~ 80 are added deionized water mixing, obtain mixed liquor A, take mixed liquor A in mass ratio 2：3 are added mixed liquors, in 25 ~
30 DEG C are stirred 2 ~ 3h, stand 3 ~ 5h, and filtering takes filter residue and drying, obtains dried object a, takes dried object a in mass ratio 2：5 ~ 7 add
Enter the mixing of matrix object, obtains sludge dehydrating agent base-material；
（4）Take rosin in mass ratio 1：5 ~ 7 addition distilled water obtain microwave object, take microwave object by matter in 130W, 50 ~ 60 DEG C of microwaves
Measure ratio 1 ~ 3：5 ~ 9 are added petroleum ether, in 40 ~ 50 DEG C of extractions, take upper liquid to be evaporated under reduced pressure, vacuum distillation object are obtained, by mass fraction
Meter takes sulfuric acid, 30 ~ 50 that 200 ~ 300 parts of sludge dehydrating agent base-materials, 40 ~ 60 parts of vacuum distillation objects, 2 ~ 5 parts of mass fractions are 98%
Part polyethylene glycol, 12 ~ 15 parts of oleyl amine polyoxyethylene ether, 3 ~ 7 parts of Tween-20s, 15 ~ 20 parts of propylene glycol, 30 ~ 50 parts of water, in 30 ~ 40
It DEG C is stirred to get sludge dehydrating agent.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113896402A (en) * | 2021-10-09 | 2022-01-07 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Sludge dewatering method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113896402A (en) * | 2021-10-09 | 2022-01-07 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Sludge dewatering method |
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