CN109967032A - A kind of method of flyash and stalk joint preparation industrial wastewater adsorbent - Google Patents
A kind of method of flyash and stalk joint preparation industrial wastewater adsorbent Download PDFInfo
- Publication number
- CN109967032A CN109967032A CN201811622392.XA CN201811622392A CN109967032A CN 109967032 A CN109967032 A CN 109967032A CN 201811622392 A CN201811622392 A CN 201811622392A CN 109967032 A CN109967032 A CN 109967032A
- Authority
- CN
- China
- Prior art keywords
- flyash
- stalk
- adsorbent
- zncl
- kcl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010881 fly ash Substances 0.000 title claims abstract description 36
- 239000003463 adsorbent Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000002360 preparation method Methods 0.000 title claims description 4
- 239000010842 industrial wastewater Substances 0.000 title abstract description 12
- 230000004913 activation Effects 0.000 claims abstract description 11
- 239000010902 straw Substances 0.000 claims abstract description 11
- 239000011148 porous material Substances 0.000 claims abstract description 4
- 240000008042 Zea mays Species 0.000 claims description 11
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 11
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 11
- 235000005822 corn Nutrition 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 11
- 239000002351 wastewater Substances 0.000 claims description 10
- 239000011592 zinc chloride Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 239000010907 stover Substances 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 4
- 239000012190 activator Substances 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000003763 carbonization Methods 0.000 claims 1
- 238000007598 dipping method Methods 0.000 claims 1
- 239000008187 granular material Substances 0.000 claims 1
- 239000002250 absorbent Substances 0.000 abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 239000002154 agricultural waste Substances 0.000 abstract description 5
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000002745 absorbent Effects 0.000 abstract description 4
- 230000003213 activating effect Effects 0.000 abstract description 4
- 239000010908 plant waste Substances 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 11
- 239000000243 solution Substances 0.000 description 11
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000002479 acid--base titration Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910001510 metal chloride Inorganic materials 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
-
- 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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
-
- 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
Abstract
The method for preparing Absorbent is combined by flyash and stalk the present invention relates to a kind of, gained active carbon has more flourishing pore structure and higher specific surface area after straw charring, absorption Absorbent can be done after flyash activating, the two is used to handle COD in industrial wastewater after activating jointly.The invention belongs to industry and agricultural waste utilization fields.Present invention agricultural wastes straw and power plant waste flyash, which are combined, prepares COD in adsorbent processing industrial wastewater, carbonizes after stalk is crushed, uses KCl and ZnCl after adulterating with flyash2Absorbent is produced in joint activation, and flyash can make up the light disadvantage of densified straw, and the active carbon that stalk is produced has the characteristics that large specific surface area, is used to remove COD in life and industrial wastewater after the two mixture；The present invention has good economic prospect, and achievees the purpose that turn waste into wealth, turn harm into good.
Description
Technical field
The present invention relates to a kind of flyash and stalk to combine the method for preparing industrial wastewater adsorbent, gained after straw charring
Active carbon has more flourishing pore structure and higher specific surface area, can do absorption Absorbent after flyash activating,
The two is used to handle COD in industrial wastewater after activating jointly；The invention belongs to industry and agricultural waste utilization fields.
Background technique
Flyash is the fine ash that catching is got off from the flue gas after coal combustion, and flyash is the main solid of coal-burning power plant's discharge
Body waste.The main oxides of power plants flyash form are as follows: SiO2、Al2O3、FeO、Fe2O3、CaO、TiO2Deng.With
The flyash discharge capacity of the development of power industry, coal-burning power plant increases year by year, becomes the biggish industrial residue of the current discharge capacity in China
One of；A large amount of flyash is untreated, will generate fugitive dust, pollutes atmosphere；Silt up if being discharged into water system and will cause river, and its
In toxic chemical substance can also cause damages to human body and biology.
China's stalk resource is abundant, most of to be discarded and burned, and not only results in waste of resources, even more adverse condition, by
Danger accident of disposable caused by this is also commonplace.
Present invention agricultural wastes straw and power plant waste flyash, which are combined, to be prepared in adsorbent processing industrial wastewater
COD is carbonized after crushing stalk, uses KCl and ZnCl after adulterating with flyash2Absorbent, flyash are produced in joint activation
The light disadvantage of densified straw can be made up, the active carbon that stalk is produced has the characteristics that large specific surface area, is used for after the two mixture
COD is removed in life and industrial wastewater；The present invention has good economic prospect, and reaches and turn waste into wealth, turn harm into good
Purpose.
Using metal chloride as novel activated dose, many carbon containing substances can be made to activate to obtain the work of high-specific surface area
Property charcoal and the concern by countries in the world.It does not appear in the newspapers to COD method in flyash and stalk joint activation processing waste water at present
Road.
The present invention, first by straw charring, is then incorporated flyash using flyash and stalk as raw material, with KCl and
ZnCl2It carries out joint activation and prepares adsorbent, propose a very good solution to solve the problems, such as that flyash and stalk recycle
Scheme.
Summary of the invention
Present invention aims at the methods for developing a kind of flyash and stalk joint preparation industrial wastewater adsorbent.
The following steps are included: being put into resistance furnace and heating after agricultural crop straw is crushed, temperature is 600 DEG C and is kept for 4 hours
Afterwards, room temperature is cooled to；After treated stalk is mixed with flyash, KCl and ZnCl is added2Mixed solution impregnates, and washes
Dry obtained Absorbent under the conditions of 120 DEG C after to neutrality.
Adsorbent is used to handle industrial wastewater COD.
Change charing stalk and flyash proportion, finds optimal adsorption process conditions.
The critical issue that emphasis solves is flyash and carbonizes the determination of the proportion of stalk, the additive amount of activator.
By measuring the nitrogen adsorption isotherm and carbon dioxide adsorption thermoisopleth of adsorbent, the hole knot of adsorbent is analyzed
Structure, and using the surface functional group content of Boehm determination of acid-basetitration adsorbent.
KCl and ZnCl when the pore structure and surface chemical property of adsorbent can be impregnated by changing2Concentration and ratio
Regulated and controled.
Beneficial effect
Present invention agricultural wastes straw and power plant waste flyash, which are combined, prepares adsorbent, for life and industrial wastewater
Middle removing COD, achievees the purpose that turn waste into wealth, turn harm into good；The present invention is to explore fly ash in electric power plant and the comprehensive benefit of agricultural stalk
With providing a kind of effective processing method.
Specific embodiment
Embodiment 1.
By corn stalk naturally dry, it is cut into cylindric or sheet.Sample after taking out drying, is put into heating equipment,
600 DEG C are warming up to the heating rate of 10 DEG C/min in air, keeps 90min.
By the sample broke after above-mentioned charing, 80 mesh or less are sieved.
Broken charing corn stover is uniformly mixed with flyash 1:1.
KCl and ZnCl is added in sample after mixing2Activated solution impregnates 24 hours, and activated solution is 10%KCl and 10%ZnCl2
Mixed liquor.
After drying, waste water COD adsorbent is made at 120 DEG C in sample after activation.
Embodiment 2
By corn stalk naturally dry, it is cut into cylindric or sheet；Take out drying after sample, be put into heating equipment, with 10 DEG C/
The heating rate of min is warming up to 550 DEG C, keeps 120min.
By the sample broke after above-mentioned charing, 80 mesh or less are sieved.
Broken charing corn stover is uniformly mixed with flyash 1:1.5.
KCl and ZnCl is added in sample after mixing2Activated solution impregnates 24 hours, and activated solution is 10%KCl and 15%ZnCl2
Mixed liquor.
After drying, waste water COD adsorbent is made at 120 DEG C in sample after activation.
Embodiment 3
By corn stalk naturally dry, it is cut into cylindric or sheet；Take out drying after sample, be put into heating equipment, with 10 DEG C/
The heating rate of min is warming up to 550 DEG C, keeps 120min.
By the sample broke after above-mentioned charing, 80 mesh or less are sieved.
Broken charing corn stover is uniformly mixed with flyash 1:2.
KCl and ZnCl is added in sample after mixing2Activated solution impregnates 24 hours, and activated solution is 15%KCl and 15%ZnCl2
Mixed liquor.
After drying, waste water COD adsorbent is made at 120 DEG C in sample after activation.
Embodiment 4
By corn stalk naturally dry, it is cut into cylindric or sheet；Take out drying after sample, be put into heating equipment, with 10 DEG C/
The heating rate of min is warming up to 600 DEG C, keeps 120min.
By the sample broke after above-mentioned charing, 100 mesh or less are sieved.
Broken charing corn stover is uniformly mixed with flyash 1:3.
KCl and ZnCl is added in sample after mixing2Activated solution impregnates 12 hours, and activated solution is 20%KCl and 15%ZnCl2
Mixed liquor.
After drying, waste water COD adsorbent is made at 120 DEG C in sample after activation.
Embodiment 5
By corn stalk naturally dry, it is cut into cylindric or sheet；Take out drying after sample, be put into heating equipment, with 10 DEG C/
The heating rate of min is warming up to 600 DEG C, keeps 120min.
By the sample broke after above-mentioned charing, 100 mesh or less are sieved.
Broken charing corn stover is uniformly mixed with flyash 2:1.
KCl and ZnCl is added in sample after mixing2Activated solution impregnates 12 hours, and activated solution is 15%KCl and 20%ZnCl2
Mixed liquor.
After drying, waste water COD adsorbent is made at 120 DEG C in sample after activation.
Claims (4)
1. agricultural crop straw naturally dry is cut into cylindric or sheet；Sample after taking out drying, with the liter of 5-15 DEG C/min
Warm rate is warming up to 500-600 DEG C, keeps 90-120 min；By the sample broke after above-mentioned charing, sieve 80-100 mesh with
Under；Broken charing corn stover and flyash are mixed in a certain ratio uniformly；KCl and ZnCl is added in sample after mixing2
Mixed activated solution impregnates 12-24 hours, and activated solution is 10-30%KCl and 10-30%ZnCl2Mixed liquor；Sample after activation
After product are dry at 120 DEG C, waste water COD adsorbent is made.
2. one kind according to claim 1 is combined by flyash and stalk prepares waste water COD adsorbent, it is characterised in that straw
Stalk carbonization temperature, the proportion relation of flyash and stalk, the additive amount of activator, KCl and ZnCl in activator2Proportionate relationship
Determination.
3. being measured according to claim 1 to adsorbent property, the pore structure and surface chemical property of adsorbent can lead to
KCl and ZnCl when crossing change dipping2Concentration, activation time and KCl and ZnCl2Ratio is regulated and controled.
4. a kind of according to claim 2 and 3 combine the method for preparing waste water COD adsorbent by flyash and stalk,
It is characterized in that preparing granule adsorbent；COD reaches 85% or more in the adsorbent removal waste water of preparation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811622392.XA CN109967032A (en) | 2018-12-28 | 2018-12-28 | A kind of method of flyash and stalk joint preparation industrial wastewater adsorbent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811622392.XA CN109967032A (en) | 2018-12-28 | 2018-12-28 | A kind of method of flyash and stalk joint preparation industrial wastewater adsorbent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109967032A true CN109967032A (en) | 2019-07-05 |
Family
ID=67076476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811622392.XA Pending CN109967032A (en) | 2018-12-28 | 2018-12-28 | A kind of method of flyash and stalk joint preparation industrial wastewater adsorbent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109967032A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110918069A (en) * | 2019-12-13 | 2020-03-27 | 西安润川环保科技有限公司 | Flue gas adsorbent and preparation method thereof |
| CN114307982A (en) * | 2022-01-14 | 2022-04-12 | 山东高速环保科技有限公司 | Preparation method of composite-based modified fly ash particles for static water body restoration |
| CN115106055A (en) * | 2021-03-22 | 2022-09-27 | 辽宁工程技术大学 | Method for preparing biochar by taking corn straws as raw material and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1342548A1 (en) * | 1996-10-28 | 2003-09-10 | General Mills, Inc. | Embedding and encapsulation of controlled release particles and encapsulated product |
| CN102266752A (en) * | 2011-06-24 | 2011-12-07 | 东北师范大学 | Method for preparing carbonizing absorption grains used for purifying water |
| US20150110707A1 (en) * | 2013-10-22 | 2015-04-23 | Corning Incorporated | Process for making chemically activated carbon |
| CN105289496A (en) * | 2015-11-23 | 2016-02-03 | 江苏大学 | Preparation method and application of honeycomb tubular bamboo leaf charcoal material |
| CN107262031A (en) * | 2017-06-29 | 2017-10-20 | 安徽天顺环保设备股份有限公司 | A kind of zinc chloride activation modified sewage sludge stalk demercuration adsorbent and preparation method |
-
2018
- 2018-12-28 CN CN201811622392.XA patent/CN109967032A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1342548A1 (en) * | 1996-10-28 | 2003-09-10 | General Mills, Inc. | Embedding and encapsulation of controlled release particles and encapsulated product |
| CN102266752A (en) * | 2011-06-24 | 2011-12-07 | 东北师范大学 | Method for preparing carbonizing absorption grains used for purifying water |
| US20150110707A1 (en) * | 2013-10-22 | 2015-04-23 | Corning Incorporated | Process for making chemically activated carbon |
| CN105289496A (en) * | 2015-11-23 | 2016-02-03 | 江苏大学 | Preparation method and application of honeycomb tubular bamboo leaf charcoal material |
| CN107262031A (en) * | 2017-06-29 | 2017-10-20 | 安徽天顺环保设备股份有限公司 | A kind of zinc chloride activation modified sewage sludge stalk demercuration adsorbent and preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 赵海等: ""秸秆与粉煤灰联合去除废水中COD的研究"" * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110918069A (en) * | 2019-12-13 | 2020-03-27 | 西安润川环保科技有限公司 | Flue gas adsorbent and preparation method thereof |
| CN115106055A (en) * | 2021-03-22 | 2022-09-27 | 辽宁工程技术大学 | Method for preparing biochar by taking corn straws as raw material and application |
| CN114307982A (en) * | 2022-01-14 | 2022-04-12 | 山东高速环保科技有限公司 | Preparation method of composite-based modified fly ash particles for static water body restoration |
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Application publication date: 20190705 |
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