CN107601814A - Contain blast furnace Desulphurization medicament and preparation and application for sludge dewatering - Google Patents
Contain blast furnace Desulphurization medicament and preparation and application for sludge dewatering Download PDFInfo
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- CN107601814A CN107601814A CN201710779529.1A CN201710779529A CN107601814A CN 107601814 A CN107601814 A CN 107601814A CN 201710779529 A CN201710779529 A CN 201710779529A CN 107601814 A CN107601814 A CN 107601814A
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- blast furnace
- sludge
- medicament
- furnace desulphurization
- desulphurization
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Abstract
Contain blast furnace Desulphurization medicament and preparation and application for sludge dewatering the invention discloses a kind of, the medicament composition and mass fraction are as follows：15 parts of blast furnace Desulphurization, 15 parts of aluminium polychloride, 12 parts of polyacrylamide.Preparation method includes the preparation of blast furnace Desulphurization suspension, prepared by PAC solution, prepared by PAM solution.Application method is that blast furnace Desulphurization medicament is each configured into solution, and blast furnace Desulphurization suspension first is added into sludge concentration tank, stirs 1 ~ 12h, then adds PAC, PAM solution, stirs 5 ~ 60min.The present invention is used using blast furnace Desulphurization as sludge conditioner, can both change Sludge Property, so as to improve the compressibility coefficient of sludge, reduce sludge specific resistance, so as to improve sludge drainability, filter cake moisture content is reduced, reduces the discharge of solid waste again, is advantageous to environmental protection.
Description
Technical field
The invention belongs to water treatment sludge dehydration technique field, and in particular to a kind of being taken off containing blast furnace for sludge dewatering
Sulphur ash medicament and preparation and application.
Background technology
Usually contain gas chromatography, including mechanical oils, lipid, humic acid, bacterium algae residue etc. in sludge.Because it contains
There is substantial amounts of hydrophilic radical, so as to cause to be not easy to be dehydrated.Typically it is adjusted by feeding lime, PAC, PAM method
Matter processing, promotes its dewatering.
The content of the invention
Contain blast furnace Desulphurization medicament for sludge dewatering the technical problem to be solved in the present invention is to provide a kind of；This hair
It is bright that a kind of preparation and application containing blast furnace Desulphurization medicament for sludge dewatering is also provided.
In order to solve the above technical problems, the present invention adopts the technical scheme that：It is a kind of to contain blast furnace for sludge dewatering
Desulphurization medicament, the medicament composition and mass fraction are as follows：Blast furnace Desulphurization 1-5 parts, aluminium polychloride 1-5 parts, polypropylene
Acid amides 1-2 parts.
In blast furnace Desulphurization of the present invention, calcium sulfite 5~40%, calcium sulfate 5~40%, addition is sludge quality
0.1~5%.
Polyacrylamide of the present invention is anion or cationic, and addition is the 0.1-5% of sludge quality；It is described
Aluminium polychloride addition is the 0.1-2% of sludge quality.
The present invention also provides a kind of preparation method containing blast furnace Desulphurization medicament for sludge dewatering, methods described bag
Include the preparation of blast furnace Desulphurization suspension, prepared by PAC solution, prepared by PAM solution.
Blast furnace Desulphurization suspension preparation section of the present invention, the suspension that 10 ~ 15wt% is made are standby.
PAC solution preparation section of the present invention, 15 ~ 20wt% solution for standby is made.
PAM solution preparation section of the present invention, 0.5 ~ 1.5wt ‰ solution for standby is made.
Another object of the present invention is to provide a kind of application method containing blast furnace Desulphurization medicament for sludge dewatering,
The application method is that blast furnace Desulphurization medicament is each configured into solution, and blast furnace Desulphurization suspension first is added into sludge condensation
Pond, 1 ~ 12h is stirred, then add PAC, PAM solution, stir 5 ~ 60min.
The method of the invention handles sludge, and medicament and sludge quality ratio are：Blast furnace Desulphurization solution 1-5%, it polymerize chlorine
Change aluminum solutions 1-5%, polyacrylamide solution 1-2%, sludge：88~97%.
The method of the invention is used in sludge conditioning with blast furnace Desulphurization substitution lime, and per kilogram blast furnace Desulphurization can
To substitute 0.3 ~ 0.9 kilogram of calcium lime powder.
Aluminium polychloride of the present invention（PAC）, commercially available certified products, meet GB/T22627-2008；Polyacrylamide,
Abbreviation PAC, commercially available certified products, meets GB/T17514-2008, GB/T31246-2014.
The present invention is used in the preparation component containing blast furnace Desulphurization medicament of sludge dewatering, adds polyacrylamide
And aluminium polychloride (PAM)（PAC）, dehydrating effect becomes apparent from, and purposes is wider, and the municipal sludge for being applicable not only to sanitary sewage takes off
Water, and suitable for the sludge dewatering in the fields such as steel, chemical industry, printing and dyeing.
The basic substance of the inventive method and effect：
The effect of one, lime and gypsum in sludge dewatering：
Lime can reduce the ratio that water is combined in sludge, so as to improve the compressibility coefficient of sludge, reduce sludge specific resistance, so as to
Sludge drainability is improved, reduces filter cake moisture content.Its action principle is：
1st, the compressibility coefficient of sludge is reduced
The high sludge of compressibility coefficient mud cake under filter pressure can deform, and cause capillary caliber therebetween to reduce, moisture is difficult
To pass through.By adding some skeleton things into sludge, the compression performance of sludge can be improved.It is conventional have lime, thin cinder,
Flyash, land plaster, bagasse etc..For these materials in the forming process of mud cake, the skeleton as mud cake increases the hardness of mud cake,
So that water is easy to from mud cake out, while also easily peeled off from filter medium.
2nd, Sludge Property is changed
Sludge comes from the spoil disposal of sedimentation basin, due in flocculation sediment technical process, having used aluminium polychloride, makes to contain in sludge
There is substantial amounts of aluminium salt.The addition of lime makes the aluminium clay in sludge become calcium-aluminium clay.Calcium-aluminium clay be easy to assemble it is agglomerating,
These clay granules, continue to aggregate into polymerization shape grogs, be distributed in needle-like in mud cake, make mud cake firm, be easy to be dehydrated.
3rd, reduce and combine water
The addition of lime, the pH value of sludge is substantially increased, the aluminium hydroxide in sludge is transformed into calcium aluminate, so as to reduce
Combination water in sludge.
4 and humic acid combine, destroy protein and enzyme
Lime and protein combine, and can make protein denaturation；Combined with enzyme, enzyme can be inactivated；So as to destroy eucaryotic cell structure,
Intracellular water is set to become free water.Meanwhile lime can combine to form more fenestral fabrics with the humic acid in sludge, enhancing
Filter cake intensity.
Gypsum can change Sludge Property, and its principle is：Gypsum can be with active silica and hydrogen a small amount of in sludge
Reactive aluminum is aoxidized, forms hydrated product ettringite, calcium silicates, single sulfur type aluminium sulfate etc..The hydrated product constantly fills space
And mutually overlap joint promotes structure constantly fine and close.Various particles are combined shape by the crystallization of needle-like by molecular force and chemical force
Into hard dense body, constantly dissolving forms Al to Sludge Surface2O4 2-、SiO3 2-Ion, these ions and Ca2+、SO42-Effect
Form ettringite, hydrated calcium silicate etc..They show good gelling performance, are advantageous to sludge dewatering.
Two, blast furnace desulfurization ash compositions：
Blast furnace Desulphurization is the product of blast furnace semi-dry desulphurization, and it mainly contains unreacted lime, reacts the sulfurous acid of generation
Calcium and calcium sulfate（Gypsum）, also carbon dust, magnesia, ferrous oxide and other impurities.Lime and gypsum therein can be made
Used for sludge conditioner, so that blast furnace Desulphurization is possibly realized for sludge conditioning.
The method of the invention is used in sludge conditioning with blast furnace Desulphurization substitution lime, and per kilogram blast furnace Desulphurization can
To substitute 0.3 ~ 0.9 kilogram of calcium lime powder.It is different according to specific composition, substitute than different, the ratio empirically determined, with reference to
The volume of sludge concentration tank, determine blast furnace Desulphurization suspension, PAC solution, PAM solution total amounts, specific time and sludge quality
It is relevant, it is determined by experiment, and corrected by production practices.
Three, blast furnaces Desulphurizations are used for the method for sludge dewatering：
Blast furnace dedusting ash, it is configured to 10~15wt% suspension；PAC：It is configured to 15~20wt% solution；PAM：It is configured to
0.5 ~ 1.5 wt ‰ solution.
Handle in sludge, medicament and sludge quality ratio：Blast furnace Desulphurization solution 1-5%, polymeric aluminum chlorides solution 1-5%,
Polyacrylamide solution 1-2%, sludge：88~97%.
Blast furnace Desulphurization suspension is first put into, is stirred 1~12 hour, PAC, PAM solution stirring 5 that input has dissolved ~
60min。
It is using beneficial effect caused by above-mentioned technical proposal：1st, the blast furnace Desulphurization that the present invention uses is blast furnace half
The product of dry desulfurization, originally accumulated as discarded object, occupy substantial amounts of soil；In strong wind weather, disperse with the wind, cause to raise
Dirt, pollute air and soil；Rainy day, wherein the lime contained can be dissolved in rainwater again, the pH value of water is caused to raise, pollution is attached
Near water body and soil, is used as sludge conditioner, is reduced the discharge of solid waste, is advantageous to environmental protection.2nd, the present invention is in sludge
In conditioning, blast furnace Desulphurization substitutes lime to use, and general per kilogram blast furnace Desulphurization can substitute 0.3 ~ 0.9 kilogram of life stone
Ashes.3rd, the present invention can change Sludge Property, so as to improve the compressibility coefficient of sludge, reduce sludge specific resistance, so as to improve
Sludge drainability, reduce filter cake moisture content.4th, the inventive method had both reduced the consumption of resource, reduced cost again.
Embodiment
With reference to specific embodiment, the present invention is further detailed explanation.
Embodiment 1
Certain steel plant's water treatment centers
Full factory waste water is pooled to water treatment centers, is clarified in high density settling tank, and clear water send subsequent treatment, and sludge is discharged to mud
Pond, after adding lime and PAC conditionings, squeezed with plate and frame filter press, mud cake feeding field reuse.
Raw sewage coordinating program：By mud per ton（Butt）1260 grams, PAC45 grams of pulverized limestone；3 grams of cationic PAM；
Sludge conditioning scheme after adjustment：Sludge per ton（Butt）3270 grams of blast furnace Desulphurization, is configured to the suspended of concentration 15wt%
Liquid, stir 6 hours；PAC40 grams, concentration 15wt% solution is configured to, stirs 20min；3 grams of cationic PAM, is configured to concentration
1.0wt ‰ solution, stir 30min；Sludge drainability is good, and total system can save 756 kilograms of high calcium lime powder daily.
Embodiment 2
Certain waste water of steel plants factory
Each System drainage, including sanitary sewage, converge to collecting-tank, are separated through tube settler, the excessively husky filter of clear water, then after
Continuous treatment for reuse；The sludge of tube settler discharge concentrates in sludge concentration tank, removes part water, mud cake is pressed into filter press.
Raw sewage coordinating program：By mud per ton（Wet mud, sludge concentration 20~30%）460 grams of calcium lime powder, 260 grams of PAC,
15 grams of cationic PAM；
Sludge conditioning scheme is after adjustment：Mud per ton（Wet mud, sludge concentration 20~30%）, 1060 grams of blast furnace Desulphurization, it is configured to
Concentration 12wt% suspension, stir 4 hours；PAC260 grams, concentration 15wt% solution is configured to, stirs 30min；Cation
PAM15 grams, concentration 1.0wt ‰ solution is configured to, stirs 30min；Sludge drainability is good, and total system can save high calcium daily
260 kilograms of pulverized limestone.
Embodiment 3
Certain coal plant's coking chemical waste water sludge dewatering
Coking chemical waste water is after biochemical treatment, and into sedimentation basin, the sludge of sedimentation basin discharge is dehydrated with belt filter press.
Raw sewage coordinating program：By mud per ton（Wet mud, sludge concentration 10~20%）630 grams of calcium lime powder, PAC420 grams,
PAM24 grams of anion；
Sludge conditioning scheme is after adjustment：1320 grams of blast furnace Desulphurization, concentration 10wt% suspension is configured to, stirred 3 hours；
PAC420 grams, concentration 15wt% solution is configured to, stirs 30min；PAM24 grams of anion, it is configured to the molten of concentration 1.5wt ‰
Liquid, stir 30min；Sludge drainability is good, and total system can save 440 kilograms of high calcium lime powder daily.
Embodiment 4
Certain integrated iron and steel works
Collect coking, sintering, steel-making, ironmaking, the integrated complex of steel rolling, for comprehensive wastewater through flocculation sediment, clear water send advanced treating, dirty
Mud is squeezed with plate and frame filter press, is recycled.
Sludge conditioning scheme：By mud per ton（Wet mud, sludge concentration 12~26%）550 grams of calcium lime powder, PAC260 grams, the moon
PAM22 grams of ion；
Sludge conditioning scheme is after adjustment：730 grams of blast furnace Desulphurization, concentration 12wt% suspension is configured to, stirred 12 hours；
PAC260 grams, concentration 20wt% solution is configured to, stirs 5min；PAM22 grams of anion, it is configured to the molten of concentration 0.5wt ‰
Liquid, stir 25min；Sludge drainability is good, and total system can save 660 kilograms of high calcium lime powder daily.
Embodiment 5
Certain pulp factory, black liquor of pulp making separate after biochemical treatment through sedimentation basin, qualified Water circulation, partial discharge；After mud conditioning
Squeezed with plate and frame filter press, mud cake send boiler to burn up.
Sludge conditioning scheme：By mud per ton（Wet mud, sludge concentration 10~20%）560 grams of calcium lime powder, PAC370 grams, sun
PAM15 grams of ion；
Sludge conditioning scheme is after adjustment：1340 grams of blast furnace Desulphurization, concentration 15wt% turbid processed is configured to, stirred 1 hour；
PAC360 grams, concentration 15wt% solution is configured to, stirs 60min；PAM15 grams of anion, it is configured to the molten of concentration 0.8wt ‰
Liquid, stir 60min；Sludge drainability is good, and total system can save 370 kilograms of high calcium lime powder daily.
Above example is only to illustrative and not limiting technical scheme, although with reference to above-described embodiment to this hair
It is bright to be described in detail, it will be understood by those within the art that：Still the present invention can be modified or be waited
With replacing, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover the power in the present invention
Among sharp claimed range.
Claims (10)
1. a kind of contain blast furnace Desulphurization medicament for sludge dewatering, it is characterised in that the medicament composition and mass fraction
It is as follows：Blast furnace Desulphurization 1-5 parts, aluminium polychloride 1-5 parts, polyacrylamide 1-2 parts.
A kind of contain blast furnace Desulphurization medicament for sludge dewatering 2. according to claim 1, it is characterised in that described
In blast furnace Desulphurization, calcium sulfite 5~40%, calcium sulfate 5~40%, addition is the 0.1~5% of sludge quality.
A kind of contain blast furnace Desulphurization medicament for sludge dewatering 3. according to claim 1, it is characterised in that described
Polyacrylamide is anion or cationic, and addition is the 0.1-5% of sludge quality；The aluminium polychloride addition is
The 0.1-2% of sludge quality.
4. based on a kind of preparation containing blast furnace Desulphurization medicament for sludge dewatering described in claim 1-3 any one
Method, it is characterised in that methods described includes the preparation of blast furnace Desulphurization suspension, prepared by PAC solution, prepared by PAM solution.
5. preparation method according to claim 4, it is characterised in that the blast furnace Desulphurization suspension preparation section, system
Suspension into 10 ~ 15wt% is standby.
6. a kind of preparation method containing blast furnace Desulphurization medicament for sludge dewatering according to claim 4, it is special
Sign is, the PAC solution preparation section, and 15 ~ 20wt% solution for standby is made.
A kind of 7. preparation containing blast furnace Desulphurization medicament for sludge dewatering according to claim 4-6 any one
Method, it is characterised in that the PAM solution preparation section, 0.5 ~ 1.5wt ‰ solution for standby is made.
8. based on a kind of use containing blast furnace Desulphurization medicament for sludge dewatering described in claim 1-7 any one
Method, it is characterised in that the application method is that blast furnace Desulphurization medicament is each configured into solution, first hangs blast furnace Desulphurization
Turbid adds sludge concentration tank, stirs 1 ~ 12h, then adds PAC, PAM solution, stirs 5 ~ 60min.
9. a kind of application method containing blast furnace Desulphurization medicament for sludge dewatering according to claim 8, it is special
Sign is that methods described processing sludge, medicament and sludge quality ratio are：Blast furnace Desulphurization solution 1-5%, aluminium polychloride are molten
Liquid 1-5%, polyacrylamide solution 1-2%, sludge：88~97%.
10. a kind of application method containing blast furnace Desulphurization medicament for sludge dewatering according to claim 8, it is special
Sign is that methods described is used in sludge conditioning with blast furnace Desulphurization substitution lime, and per kilogram blast furnace Desulphurization can substitute
0.3 ~ 0.9 kilogram of calcium lime powder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710779529.1A CN107601814A (en) | 2017-09-01 | 2017-09-01 | Contain blast furnace Desulphurization medicament and preparation and application for sludge dewatering |
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| CN201710779529.1A CN107601814A (en) | 2017-09-01 | 2017-09-01 | Contain blast furnace Desulphurization medicament and preparation and application for sludge dewatering |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108358430A (en) * | 2018-03-13 | 2018-08-03 | 南京城建环保水务股份有限公司 | A kind of Treatment of Sludge conditioning medicament and its application method |
| CN110482832A (en) * | 2019-08-21 | 2019-11-22 | 辽宁省产品质量监督检验院（辽宁省建筑材料监督检验院） | A kind of sludge from wastewater treatment plant is dry, stabilizes and recycling processing method |
| CN111704346A (en) * | 2020-06-19 | 2020-09-25 | 中国水利水电第八工程局有限公司 | Conditioner for plate-frame filter pressing, dehydrating and curing of river and lake sludge and curing method thereof |
| CN111875232A (en) * | 2020-08-10 | 2020-11-03 | 安徽工业大学 | Integrated treatment method for quickly separating mud and water from building waste slurry and solidifying filter mud |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105314815A (en) * | 2014-05-29 | 2016-02-10 | 宝山钢铁股份有限公司 | Sludge dewatering conditioning agent and dewatering method thereof |
-
2017
- 2017-09-01 CN CN201710779529.1A patent/CN107601814A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105314815A (en) * | 2014-05-29 | 2016-02-10 | 宝山钢铁股份有限公司 | Sludge dewatering conditioning agent and dewatering method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108358430A (en) * | 2018-03-13 | 2018-08-03 | 南京城建环保水务股份有限公司 | A kind of Treatment of Sludge conditioning medicament and its application method |
| CN110482832A (en) * | 2019-08-21 | 2019-11-22 | 辽宁省产品质量监督检验院（辽宁省建筑材料监督检验院） | A kind of sludge from wastewater treatment plant is dry, stabilizes and recycling processing method |
| CN111704346A (en) * | 2020-06-19 | 2020-09-25 | 中国水利水电第八工程局有限公司 | Conditioner for plate-frame filter pressing, dehydrating and curing of river and lake sludge and curing method thereof |
| CN111875232A (en) * | 2020-08-10 | 2020-11-03 | 安徽工业大学 | Integrated treatment method for quickly separating mud and water from building waste slurry and solidifying filter mud |
| CN111875232B (en) * | 2020-08-10 | 2022-07-08 | 安徽工业大学 | Integrated treatment method for quickly separating mud and water from building waste slurry and solidifying filter mud |
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