CN109110844A - A kind of preparation method of ultralight sludge ceramsite water-purifying material - Google Patents
A kind of preparation method of ultralight sludge ceramsite water-purifying material Download PDFInfo
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- CN109110844A CN109110844A CN201811227812.4A CN201811227812A CN109110844A CN 109110844 A CN109110844 A CN 109110844A CN 201811227812 A CN201811227812 A CN 201811227812A CN 109110844 A CN109110844 A CN 109110844A
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- sludge ceramsite
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- purifying material
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- 239000010802 sludge Substances 0.000 title claims abstract description 74
- 239000000463 material Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- RGZQGGVFIISIHZ-UHFFFAOYSA-N strontium titanium Chemical compound [Ti].[Sr] RGZQGGVFIISIHZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000001354 calcination Methods 0.000 claims abstract description 13
- DHEQXMRUPNDRPG-UHFFFAOYSA-N strontium nitrate Chemical compound [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O DHEQXMRUPNDRPG-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000000746 purification Methods 0.000 claims abstract description 9
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000004381 surface treatment Methods 0.000 claims description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 5
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 239000003995 emulsifying agent Substances 0.000 claims description 5
- 239000001632 sodium acetate Substances 0.000 claims description 5
- 235000017281 sodium acetate Nutrition 0.000 claims description 5
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims description 5
- 235000019345 sodium thiosulphate Nutrition 0.000 claims description 5
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims description 5
- 101100203596 Caenorhabditis elegans sol-1 gene Proteins 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000003344 environmental pollutant Substances 0.000 abstract description 7
- 231100000719 pollutant Toxicity 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 5
- 229910052712 strontium Inorganic materials 0.000 abstract description 5
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 abstract description 5
- 238000003911 water pollution Methods 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
- 239000010936 titanium Substances 0.000 abstract 1
- 239000002957 persistent organic pollutant Substances 0.000 description 10
- 238000001914 filtration Methods 0.000 description 6
- 230000001699 photocatalysis Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000004321 preservation Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007146 photocatalysis Methods 0.000 description 3
- GSDSWSVVBLHKDQ-UHFFFAOYSA-N 9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid Chemical compound FC1=CC(C(C(C(O)=O)=C2)=O)=C3N2C(C)COC3=C1N1CCN(C)CC1 GSDSWSVVBLHKDQ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229960001699 ofloxacin Drugs 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 230000002070 germicidal effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000010773 plant oil Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28016—Particle form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
- B01J20/28095—Shape or type of pores, voids, channels, ducts
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
- B01J2220/4887—Residues, wastes, e.g. garbage, municipal or industrial sludges, compost, animal manure; fly-ashes
-
- 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
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Abstract
A kind of preparation method of ultralight sludge ceramsite water-purifying material, belongs to water purification material field, including following processing steps: sludge ceramsite being surface-treated with hydrochloric acid solution, sludge ceramsite must be surface-treated after drying and calcining；Titanium strontium colloidal sol is prepared with tetrabutyl titanate, strontium nitrate, organic solvent and other salts；Sludge ceramsite will be surface-treated and titanium strontium colloidal sol is stirred at normal temperature to gel is formed, obtain ultralight sludge ceramsite water-purifying material after drying and calcining.Have the characteristics that large specific surface area, bulk density are low, the porosity is high, cylindrical compress strength is high with the ultralight sludge ceramsite water-purifying material that this method is prepared, and there is powerful absorption-decomposing pollutant ability, is suitable for a variety of water pollution control processes.
Description
Technical field
The invention belongs to water purification material fields, and in particular to a kind of preparation method of ultralight sludge ceramsite water-purifying material.
Background technique
Sludge ceramsite has the characteristics that material light, large specific surface area, absorption suspending power are strong, and have wear-resisting, resistance to erosion,
The advantages that micropore is more, retaining power is strong, stable chemical performance are water factory, filter tank and the comparatively ideal filter material of oil plant oil strain pond
Material.Sludge ceramsite product can handle biochemical organic industrial sewage, industrial miscellaneous drainage, micro polluted source etc..Sludge ceramsite can
Reuse, can be filled when finally discarding, new soil and page layer can be formed again after landfill, will not welding, be a kind of
Excellent green filtering material.The development trend of material for water treatment is high activity, long-life, easily recycling, easily regeneration, is had simultaneously
The material of above-mentioned multiple functions will necessarily obtain wider application in the actual process.In order to improve water treatment efficiency, locating
Material for water treatment is required to come into full contact with water during reason sewage, to play the processing capacity of material completely.Lightweight water process material
The positive extensive concern for obtaining people of material, and light weight sludge haydite is important type therein.
Conventional light weight sludge haydite can only adsorb with the organic pollutant in trap water, in pollutant adsorption saturation
After cannot continue to use, and must reclaiming, this material property is unfavorable for Sequential Production.Photocatalysis pollution purification
Technology can effectively remove the organic pollutant of most types, be a kind of advanced oxidation pollutant abatement technology.It can swash
Under the irradiation of the efficient light sources of luminous catalyst, photocatalysis oxidation technique can decompose the organic pollutant of absorption, to reach
Continuous absorption-degradation process.Photocatalysis technology is combined with light weight sludge haydite, there is great practical application meaning.
Summary of the invention
In view of the problems of the existing technology, the present invention is intended to provide a kind of preparation side of ultralight sludge ceramsite water-purifying material
Method, this kind of material is in addition to adsorbing and the organic pollutant in trap water, additionally it is possible to most organic pollutants in water of degrading.
The technical solution adopted by the present invention is that: a kind of preparation method of ultralight sludge ceramsite water-purifying material, including following works
Skill step.
(1) it is surface-treated the preparation of sludge ceramsite.
1. 50g sludge ceramsite is mixed with the 0.2mol/L hydrochloric acid solution of 600mL, 93 DEG C are heated the mixture to, heat preservation
4h, cooling, filtering obtains solids A.
2., then in 900 DEG C of calcining 3h, obtaining surface treatment sludge ceramsite by solids A in 160 DEG C of dry 12h.
(2) preparation of titanium strontium colloidal sol.
1. sequentially added in flask 300mL dehydrated alcohol, 6 ~ 11g emulsifier NP-8,19 ~ 26mL tetrabutyl titanate, 10 ~
15mL ethylene glycol, 3 ~ 6mL tributyl phosphate heat the mixture to 65 DEG C, keep the temperature 30min, obtain solution A.
2. 8 ~ 10g strontium nitrate, 3 ~ 5g sodium thiosulfate, 2 ~ 3g sodium acetate are added in 100mL deionized water, stirring to shape
At solution B.
3. solution A and solution B are mixed, stir evenly, be heated to 65 DEG C, keeps the temperature 30min, obtain titanium strontium colloidal sol.
(3) preparation of gel haydite.
Sludge ceramsite will be surface-treated and titanium strontium colloidal sol mixes, stirring continues to be aged and place to gel is formed at normal temperature
2h obtains gel haydite.
(4) preparation of ultralight sludge ceramsite water-purifying material.
By gel haydite in 110 DEG C of dry 12h, then in 700 ~ 850 DEG C of 2 ~ 3h of calcining, it is net to obtain ultralight sludge ceramsite
Water material.
Wherein, in (1) sludge ceramsite used main indicator are as follows: 5 ~ 9mm of partial size, 300 ~ 380kg/m of bulk density3, cylinder
4.5 ~ 5.0Mpa of Compressive Strength.
The ultralight sludge ceramsite water-purifying material of preparation has following technical characteristic: 160 ~ 210m of specific surface area2/ g, the porosity
47% ~ 51%, 350 ~ 390kg/m of bulk density3, 4.5 ~ 5.0Mpa of cylindrical compress strength.
A kind of preparation method of ultralight sludge ceramsite water-purifying material of the invention, compared with prior art, advantage is: this
Kind material is prepared for the strontium titanates coating with light catalytic purifying function on sludge ceramsite surface using sludge ceramsite as carrier.Through
It crosses haydite surface treatment and gelation process, strontium titanates coating is tightly combined with haydite surface, and do not block haydite surface
Hole.Such material can not only retain the distinctive pore character of haydite and adsorb the ability of pollutant, but also can be in light
The activity of strontium titanates coating purification decomposing organic pollutant is played according under the conditions of.The organic pollutant for being adsorbed on haydite surface can
It is quickly move through Photocatalytic Oxidation decomposition, so that this ultralight sludge ceramsite water-purifying material has powerful absorption-decomposition
The ability of pollutant is suitable for a variety of water pollution control processes.
Specific embodiment
Embodiment 1.
A kind of preparation method of ultralight sludge ceramsite water-purifying material, including following processing steps.
(1) it is surface-treated the preparation of sludge ceramsite.
1. 50g sludge ceramsite is mixed with the 0.2mol/L hydrochloric acid solution of 600mL, 93 DEG C are heated the mixture to, heat preservation
4h, cooling, filtering obtains solids A.
2., then in 900 DEG C of calcining 3h, obtaining surface treatment sludge ceramsite by solids A in 160 DEG C of dry 12h.
(2) preparation of titanium strontium colloidal sol.
1. sequentially adding 300mL dehydrated alcohol, 6g emulsifier NP-8,19mL tetrabutyl titanate, 10mL second two in flask
Alcohol, 3mL tributyl phosphate heat the mixture to 65 DEG C, keep the temperature 30min, obtain solution A.
2. 8g strontium nitrate, 3g sodium thiosulfate, 2g sodium acetate are added in 100mL deionized water, stirring to formation solution
B。
3. solution A and solution B are mixed, 65 DEG C are heated to, 30min is kept the temperature, obtains titanium strontium colloidal sol.
(3) preparation of gel haydite.
Sludge ceramsite will be surface-treated and titanium strontium colloidal sol mixes, stirring continues to be aged and place to gel is formed at normal temperature
2h obtains gel haydite.
(4) preparation of ultralight sludge ceramsite water-purifying material.
By gel haydite in 110 DEG C of dry 12h, then in 700 DEG C of calcining 3h, ultralight sludge ceramsite water purification material is obtained
Material.
Wherein, in (1) sludge ceramsite used main indicator are as follows: partial size 5mm, bulk density 380kg/m3, cylindrical compress strength
5.0Mpa。
The ultralight sludge ceramsite of preparation has following technical characteristic: specific surface area 210m2/ g, the porosity 51%, bulk density
390kg/m3, cylindrical compress strength 5.0Mpa.
Embodiment 2.
A kind of preparation method of ultralight sludge ceramsite water-purifying material, including following processing steps.
(1) preparation of surface treatment sludge pottery.
1. 50g sludge ceramsite is mixed with the 0.2mol/L hydrochloric acid solution of 600mL, 93 DEG C are heated the mixture to, heat preservation
4h, cooling, filtering obtains solids A.
2., then in 900 DEG C of calcining 3h, obtaining surface treatment sludge ceramsite by solids A in 160 DEG C of dry 12h.
(2) preparation of titanium strontium colloidal sol.
1. sequentially adding 300mL dehydrated alcohol, 8g emulsifier NP-8,22mL tetrabutyl titanate, 13mL second two in flask
Alcohol, 4mL tributyl phosphate heat the mixture to 65 DEG C, keep the temperature 30min, obtain solution A.
2. 9g strontium nitrate, 4g sodium thiosulfate, 2g sodium acetate are added in 100mL deionized water, stirring to formation solution
B。
3. solution A and solution B are mixed, 65 DEG C are heated to, 30min is kept the temperature, obtains titanium strontium colloidal sol.
(3) preparation of gel haydite.
Sludge ceramsite will be surface-treated and titanium strontium colloidal sol mixes, stirring continues to be aged and place to gel is formed at normal temperature
2h obtains gel haydite.
(4) preparation of ultralight sludge ceramsite water-purifying material.
By gel haydite in 110 DEG C of dry 12h, then in 790 DEG C of calcining 2h, ultralight sludge ceramsite water purification material is obtained
Material.
Wherein, in (1) sludge ceramsite used main indicator are as follows: partial size 7mm, bulk density 350kg/m3, cylindrical compress strength
4.8Mpa。
The ultralight sludge ceramsite of preparation has following technical characteristic: specific surface area 180m2/ g, the porosity 49%, bulk density
370kg/m3, cylindrical compress strength 4.7Mpa.
Embodiment 3.
A kind of preparation method of ultralight sludge ceramsite water-purifying material, including following processing steps.
(1) it is surface-treated the preparation of sludge ceramsite.
1. 50g sludge ceramsite is mixed with the 0.2mol/L hydrochloric acid solution of 600mL, 93 DEG C are heated the mixture to, heat preservation
4h, cooling, filtering obtains solids A.
2., then in 900 DEG C of calcining 3h, obtaining surface treatment sludge ceramsite by solids A in 160 DEG C of dry 12h.
(2) preparation of titanium strontium colloidal sol.
1. sequentially adding 300mL dehydrated alcohol, 11g emulsifier NP-8,26mL tetrabutyl titanate, 15mL second two in flask
Alcohol, 6mL tributyl phosphate heat the mixture to 65 DEG C, keep the temperature 30min, obtain solution A.
2. 10g strontium nitrate, 5g sodium thiosulfate, 3g sodium acetate are added in 100mL deionized water, stirring to formation solution
B。
3. solution A and solution B are mixed, 65 DEG C are heated to, 30min is kept the temperature, obtains titanium strontium colloidal sol.
(3) preparation of gel haydite.
Sludge ceramsite will be surface-treated and titanium strontium colloidal sol mixes, stirring continues to be aged and place to gel is formed at normal temperature
2h obtains gel haydite.
(4) preparation of ultralight sludge ceramsite water-purifying material.
By gel haydite in 110 DEG C of dry 12h, then in 850 DEG C of calcining 2h, ultralight sludge ceramsite water purification material is obtained
Material.
Wherein, in (1) sludge ceramsite used main indicator are as follows: partial size 9mm, bulk density 300kg/m3, cylindrical compress strength
4.5Mpa。
The ultralight sludge ceramsite of preparation has following technical characteristic: specific surface area 160m2/ g, the porosity 47%, bulk density
350kg/m3, cylindrical compress strength 4.5Mpa.
Comparative experiments.
1 common sludge haydite of comparative example.
Comparative example 2 is surface-treated sludge ceramsite.
(1) 50g sludge ceramsite is mixed with the 0.2mol/L hydrochloric acid solution of 600mL, heats the mixture to 93 DEG C, heat preservation
4h, cooling, filtering obtains solids A.
(2) by solids A in 160 DEG C of dry 12h, then in 900 DEG C of calcining 3h, surface treatment sludge ceramsite is obtained.
The material prepared in embodiment and comparative example is carried out performance detection, detection method is as follows: preparing 500mL concentration is
300mg material for water treatment is added in beaker in the Ofloxacin solution of 30mg/L, stirs 20min at the place of being protected from light, surveys the dense of solution
Degree.Solution is placed under 20 W ultraviolet germicidals and is irradiated, every 20min sampling and testing solution concentration.Calculate Ofloxacin solution
Adsorption rate and photocatalytic activity on material, as a result see the table below.
It is learnt by table, by being surface-treated to common sludge haydite, the suction to organic pollutant can be significantly improved
Attached ability.The ultralight sludge ceramsite water-purifying material prepared on this basis can not only retain the distinctive pore character of haydite and suction
The ability of attached pollutant, but also the activity of strontium titanates coating purification decomposing organic pollutant can be played under illumination condition,
The organic pollutant for being adsorbed on haydite surface is set to quickly move through Photocatalytic Oxidation decomposition, so that this ultralight sludge
Haydite water-purifying material has powerful absorption-decomposing pollutant ability, is suitable for a variety of water pollution control processes.
Claims (3)
1. a kind of preparation method of ultralight sludge ceramsite water-purifying material, which is characterized in that the preparation method includes following technique steps
It is rapid:
(1) it is surface-treated the preparation of sludge ceramsite
1. 50g sludge ceramsite is mixed with the 0.2mol/L hydrochloric acid solution of 600mL, 93 DEG C are heated the mixture to, keeps the temperature 4h, it is cold
But, it filters, obtains solids A；
2., then in 900 DEG C of calcining 3h, obtaining surface treatment sludge ceramsite by solids A in 160 DEG C of dry 12h；
(2) preparation of titanium strontium colloidal sol
1. sequentially adding 300mL dehydrated alcohol, 6 ~ 11g emulsifier NP-8,19 ~ 26mL tetrabutyl titanate, 10 ~ 15mL in flask
Ethylene glycol, 3 ~ 6mL tributyl phosphate heat the mixture to 65 DEG C, keep the temperature 30min, obtain solution A；
2. 8 ~ 10g strontium nitrate, 3 ~ 5g sodium thiosulfate, 2 ~ 3g sodium acetate are added in 100mL deionized water, stir molten to being formed
Liquid B；
3. solution A and solution B are mixed, stir evenly, be heated to 65 DEG C, keeps the temperature 30min, obtain titanium strontium colloidal sol；
(3) preparation of gel haydite
Sludge ceramsite will be surface-treated and titanium strontium colloidal sol mixes, stirring continues to be aged and place 2h, obtain to gel is formed at normal temperature
To gel haydite；
(4) preparation of ultralight sludge ceramsite water-purifying material
By gel haydite in 110 DEG C of dry 12h, then in 700 ~ 850 DEG C of 2 ~ 3h of calcining, ultralight sludge ceramsite water purification material is obtained
Material.
2. a kind of ultralight sludge ceramsite water-purifying material according to claim 1, which is characterized in that the master of the sludge ceramsite
Want index are as follows: 5 ~ 9mm of partial size, 300 ~ 380kg/m of bulk density3, 4.5 ~ 5.0Mpa of cylindrical compress strength.
3. a kind of ultralight sludge ceramsite water-purifying material according to claim 1, which is characterized in that prepared ultralight sludge
Haydite has following technical characteristic: 160 ~ 210m of specific surface area2/ g, the porosity 47% ~ 51%, 350 ~ 390kg/m of bulk density3, cylinder
4.5 ~ 5.0Mpa of Compressive Strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227812.4A CN109110844A (en) | 2018-10-22 | 2018-10-22 | A kind of preparation method of ultralight sludge ceramsite water-purifying material |
Applications Claiming Priority (1)
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