CN107986375A - A kind of preparation method of leather waste water adsorbent - Google Patents
A kind of preparation method of leather waste water adsorbent Download PDFInfo
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- CN107986375A CN107986375A CN201711315737.2A CN201711315737A CN107986375A CN 107986375 A CN107986375 A CN 107986375A CN 201711315737 A CN201711315737 A CN 201711315737A CN 107986375 A CN107986375 A CN 107986375A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
-
- 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
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
-
- 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
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/22—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof
- C02F2103/24—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof from tanneries
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Abstract
The invention discloses a kind of preparation method of leather waste water adsorbent, belong to absorbent fields.Characterization of adsorption of the present invention due to flyash in itself, aluminium oxide by flyash, the calcining of lime stone, dissolving separated out, then remove impurity by fusion method, and aluminium chloride is set to possess loose structure, specific surface area is big, good thermal stability, therefore aluminium oxide has good absorption property.Aluminium oxide prevents from hydrolyzing by acetic acid, and silica gel is then dissolved by acetic acid, and to adsorb in oxidation aluminium surface, and silica gel has open loose structure in itself, and strong adsorption, can adsorb many kinds of substance.The silica gel for extending in oxidation aluminium surface at the same time is cross-linked with each other under crosslinking agent effect, controls cross-linking reaction by adjusting pH value, so as to form three-dimensional network, the surface of aluminium oxide is formed many holes, so as to increase adsorbance.During the present invention solves current absorption method processing leather waste water, adsorbent adsorption capacity is little, the problem of causing the treatment effect of waste water bad.
Description
Technical field
The invention belongs to absorbent fields, and in particular to a kind of preparation method of leather waste water adsorbent.
Background technology
With the continuous development of social productive forces, the demand of leather and fur is also to be continuously increased, the intractability of pollution in leather industry
Continuing to increase.Pollution in leather industry source is mainly leather waste water, is called leather-making waste water, be a kind of high concentration, complicated component it is organic
Waste water.The waste water of leather manufacture industry is most from the two workshop sections of preparation stage and tanning stage, mainly in aqueous into
OK, waste liquid is accomplished continuously or intermittently discharged.The preparation stage waste water of discharge is in strong basicity, accounts for the 60% of whole displacement, in waste water
Chloride containing high concentration, sulfide, preservative, grease, protein and suspended matter etc..Process hides composite waste has in alkalescence
Poison, hard-degraded substance content is high, and the dirty erosion of appearance, the smell is awful.With developing rapidly for leather industry in recent years, leather waste water is
Through as one of important pollution sources.According to statistics, there is large, medium and small more than 20000 family of Leather Factory in China at present, year waste discharge amount
Up to 8000 ~ 120,000,000 tons, the 0.3% of national industrial wastewater total amount is accounted for.120,000 tons of the suspended matter discharged in these waste water, COD
For 180,000 tons, 100,000 tons of ammonia nitrogen.With raising of the development and people of economic society to environmental requirement, the processing of leather waste water
Have been to be concerned by more and more people.Pollutant component is various in leather waste water, is usually expressed as the S of high concentration2-And Cr3+, it is high
Concentration C OD, high strength ammonia nitrogen compound, biodegradability is poor, contains the neutral salt such as substantial amounts of chloride, sulfate.With state
Requirement of the family to leather discharge water quality is higher and higher, and the composition of leather waste water is more complicated, including chromate waste water, sulfur-bearing give up
Water, dyeing waste-water and production waste water, integrated treatment difficulty is big, thus by single processing be difficult by wastewater treatment totally simultaneously
Meet national standard, especially meet national two level water quality requirement, and the time that single processing needs is longer, efficiency compared with
It is low, do not meet production requirement.Therefore, how a kind for the treatment of process of the leather waste water of synthesis is provided, country can be reached
The secondary standard water quality requirement of sewage discharge, is always the practical problem that leather manufacturer is urgently to be resolved hurrily in the industry.At present, leather gives up
The processing method of water mainly has：Coagulant sedimentation, absorption method, catalytic oxidation, A/A/O（Anaerobic- anoxic- oxic method, biology are de-
Nitrogen dephosphorization process）And SBR（Intermittent activated sludge process）Deng.Wherein absorption method is adsorbed usually using materials such as activated carbons, although
It can realize the absorption to most of pollutant in waste water, but adsorbent is difficult to parse again after adsorbing, and adsorption capacity is not
Greatly, the treatment effect that result in waste water is bad.Therefore, it is very urgent to produce a kind of adsorbent of advantages of good adsorption effect.
The content of the invention
The technical problems to be solved by the invention：During leather waste water is handled currently with absorption method, after absorption
Adsorbent be difficult to parse again, and adsorption capacity is little, the problem of causing the treatment effect of waste water bad, there is provided a kind of leather gives up
The preparation method of water absorbent.
In order to solve the above technical problems, the present invention is using technical solution as described below：
A kind of preparation method of leather waste water adsorbent, it is characterised in that preparation method includes the following steps：
（1）In mass ratio 5 ~ 6：1 ~ 2, flyash, lime stone are calcined at 500 ~ 600 DEG C of temperature, 1 ~ 2h is calcined, must forge
Burning thing, in mass ratio 1：3 ~ 4, calcined material, sodium carbonate liquor are mixed, soak 20 ~ 30min, filtering, obtains immersion filter residue；
（2）Filter residue is crushed, 50 ~ 70 mesh sieves is crossed, obtains sieving, in mass ratio 1：3 ~ 4, by sieving, acetic acid solution into
Row mixing, 5 ~ 6h is stirred at 20 ~ 30 DEG C of temperature, is filtered, is obtained stirring filter residue, will stirring filter residue in 800 ~ 900 DEG C of temperature
Lower melting, is cooled to room temperature, obtains cooling thing, by cooling thing at 100 ~ 110 DEG C of temperature it is dry, obtain dried object a；
（3）In mass ratio 1：3 ~ 4, silica gel, acetic acid solution are subjected to 1 ~ 2h of mixing, stirring thing is obtained, counts in parts by weight, take
10 ~ 15 parts of dried object a, 7 ~ 8 parts of stirring things, 1 ~ 2 part of crosslinking agent, 0.8 ~ 1 part of hydrochloric acid solution carry out hybrid reaction, and are stirred
30 ~ 35min, reacts 10 ~ 12h, obtains reactant；
（4）Reactant is filtered, obtains filter residue, filter residue is washed with deionized, the filter residue after must washing, then by after washing
Filter residue at 50 ~ 60 DEG C of temperature dry 12 ~ 15h, dried object b is collected, up to leather waste water adsorbent.
The step（3）Middle crosslinking agent be sodium polyphosphate, cumyl peroxide it is therein any one.
Compared with other methods, advantageous effects are the present invention：Characterization of adsorption of the present invention due to flyash in itself, leads to
Cross flyash, aluminium oxide is separated out, then removes impurity by fusion method by the calcining of lime stone, dissolving, and possess aluminium chloride
Loose structure, specific surface area is big, good thermal stability, therefore aluminium oxide has good absorption property.Aluminium oxide passes through acetic acid
To prevent from hydrolyzing, silica gel is then dissolved by acetic acid, and to adsorb in oxidation aluminium surface, and silica gel has opening in itself
Loose structure, strong adsorption, can adsorb many kinds of substance.The silica gel for extending in oxidation aluminium surface at the same time is mutual under crosslinking agent effect
Crosslinking, controls cross-linking reaction by adjusting pH value, so as to form three-dimensional network, the surface of aluminium oxide is formed many holes,
So as to increase adsorbance.The analytic method for the adsorbent that the present invention passes through ion exchange is to be eluted with inorganic salt solution, can
The cation for making ion exchange occurs with heavy metal ion is re-attached on adsorbent, so that adsorbent reactivation.
Embodiment
Crosslinking agent be sodium polyphosphate, cumyl peroxide it is therein any one.
A kind of preparation method of leather waste water adsorbent, preparation method include the following steps：
（1）In mass ratio 5 ~ 6：1 ~ 2, flyash, lime stone are calcined at 500 ~ 600 DEG C of temperature, 1 ~ 2h is calcined, must forge
Burning thing, in mass ratio 1：3 ~ 4, calcined material, 1mol/L sodium carbonate liquors are mixed, soak 20 ~ 30min, filtering, must soak
Filter residue；
（2）Filter residue is crushed, 50 ~ 70 mesh sieves is crossed, obtains sieving, in mass ratio 1：3 ~ 4, by sieving, 1.0mol/L second
Acid solution is mixed, and 5 ~ 6h is stirred with 50 ~ 100r/min at 20 ~ 30 DEG C of temperature, is filtered, is obtained stirring filter residue, will stir
Mix filter residue to melt at 800 ~ 900 DEG C of temperature, the time is 1 ~ 2h, is cooled to room temperature, obtains cooling thing, by cooling thing in temperature
Dry 3 ~ 4h, obtains dried object a at 100 ~ 110 DEG C；
（3）In mass ratio 1：3 ~ 4, silica gel, 1.0mol/L acetic acid solutions are mixed, at 50 ~ 60 DEG C of temperature with 50 ~
100r/min is stirred 1 ~ 2h, obtains stirring thing, counts in parts by weight, take 10 ~ 15 parts of dried object a, 7 ~ 8 parts of stirring things, 1 ~ 2 part
Crosslinking agent, 0.8 ~ 1 part of 0.1mol/L hydrochloric acid solution carry out hybrid reaction, and are stirred 30 ~ 35min with 100 ~ 200r/min,
10 ~ 12h is reacted, obtains reactant；
（4）Reactant is filtered, obtains filter residue, filter residue is washed with deionized, the filter residue after must washing, then by after washing
Filter residue at 50 ~ 60 DEG C of temperature dry 12 ~ 15h, dried object b is collected, up to leather waste water adsorbent.
Example 1
Crosslinking agent is sodium polyphosphate.
A kind of preparation method of leather waste water adsorbent, preparation method include the following steps：
（1）In mass ratio 5：1, flyash, lime stone are calcined at 500 DEG C of temperature, 1h is calcined, calcined material is obtained, by matter
Measure ratio 1：3, calcined material, 1mol/L sodium carbonate liquors are mixed, soak 20min, filtering, obtains immersion filter residue；
（2）Filter residue is crushed, 50 mesh sieves is crossed, obtains sieving, in mass ratio 1：3, by sieving, 1.0mol/L acetic acid solutions
Mixed, 5h be stirred with 50r/min at 20 DEG C of temperature, filtered, obtain stirring filter residue, will stirring filter residue in temperature 800
Melted at DEG C, time 1h, is cooled to room temperature, obtains cooling thing, by cooling thing at 100 DEG C of temperature dry 3h, obtain dried object
a；
（3）In mass ratio 1：3, silica gel, 1.0mol/L acetic acid solutions are mixed, carried out under temperature 50 C with 50r/min
1h is stirred, stirring thing is obtained, counts in parts by weight, take 10 parts of dried object a, 7 parts of stirring things, 1 part of crosslinking agent, 0.8 part of 0.1mol/L
Hydrochloric acid solution carries out hybrid reaction, and is stirred 30min with 100r/min, reacts 10h, obtains reactant；
（4）Reactant is filtered, obtains filter residue, filter residue is washed with deionized, the filter residue after must washing, then by after washing
Filter residue under temperature 50 C dry 12h, dried object b is collected, up to leather waste water adsorbent.
Example 2
Crosslinking agent is cumyl peroxide.
A kind of preparation method of leather waste water adsorbent, preparation method include the following steps：
（1）In mass ratio 3：1, flyash, lime stone are calcined at 600 DEG C of temperature, 2h is calcined, calcined material is obtained, by matter
Measure ratio 1：4, calcined material, 1mol/L sodium carbonate liquors are mixed, soak 30min, filtering, obtains immersion filter residue；
（2）Filter residue is crushed, 60 mesh sieves is crossed, obtains sieving, in mass ratio 1：3.5, sieving, 1.0mol/L acetic acid is molten
Liquid is mixed, and 5.5h is stirred with 60r/min at 25 DEG C of temperature, is filtered, is obtained stirring filter residue, will stirring filter residue in temperature
Melted at 850 DEG C, time 1.5h, is cooled to room temperature, obtains cooling thing, by cooling thing at 105 DEG C of temperature dry 3.5h, obtain
Dried object a；
（3）In mass ratio 1：4, silica gel, 1.0mol/L acetic acid solutions are mixed, carried out under temperature 60 C with 100r/min
2h is stirred, stirring thing is obtained, counts in parts by weight, take 15 parts of dried object a, 8 parts of stirring things, 2 parts of crosslinking agents, 1 portion of 0.1mol/L salt
Acid solution carries out hybrid reaction, and is stirred 35min with 200r/min, reacts 12h, obtains reactant；
（4）Reactant is filtered, obtains filter residue, filter residue is washed with deionized, the filter residue after must washing, then by after washing
Filter residue under temperature 60 C dry 15h, dried object b is collected, up to leather waste water adsorbent.
Example 3
Crosslinking agent is sodium polyphosphate.
A kind of preparation method of leather waste water adsorbent, preparation method include the following steps：
（1）In mass ratio 5.5：1.5, flyash, lime stone are calcined at 550 DEG C of temperature, 1.5h is calcined, must calcine
Thing, in mass ratio 1：3.5, calcined material, 1mol/L sodium carbonate liquors are mixed, soak 25min, filtering, obtains immersion filter residue；
（2）Filter residue is crushed, 70 mesh sieves is crossed, obtains sieving, in mass ratio 1：4, by sieving, 1.0mol/L acetic acid solutions
Mixed, 6h be stirred with 100r/min at 30 DEG C of temperature, filtered, obtain stirring filter residue, will stirring filter residue in temperature 900
Melted at DEG C, time 2h, is cooled to room temperature, obtains cooling thing, by cooling thing at 110 DEG C of temperature dry 4h, obtain dried object
a；
（3）In mass ratio 1：3.5, silica gel, 1.0mol/L acetic acid solutions are mixed, at 55 DEG C of temperature with 75r/min into
Row stirring 1.5h, obtains stirring thing, counts in parts by weight, take 12.5 parts of dried object a, 7.5 parts of stirring things, 1.5 parts of crosslinking agents, 0.9
Part 0.1mol/L hydrochloric acid solutions carry out hybrid reaction, and are stirred 33min with 150r/min, react 11h, obtain reactant；
（4）Reactant is filtered, obtains filter residue, filter residue is washed with deionized, the filter residue after must washing, then by after washing
Filter residue at 55 DEG C of temperature dry 13.5h, dried object b is collected, up to leather waste water adsorbent.
Reference examples：The leather waste water adsorbent of Jinzhou City company production.
1L Leather Factories waste water is taken, is separately added into adsorbent obtained in embodiment and the adsorbent of reference examples, stirring
20min is stirred, stands 10min.Repeat to test, COD, BOD concentration and adsorbent adsorbance in waste water after detection process.Processing
Preceding COD concentration（3312~6021mg/L）, BOD concentration（4125~5382mg/L）, test result is shown in Table 1.
Table 1：
Summary, leather waste water adsorbent advantages of good adsorption effect of the invention, the leather waste water water quality after processing can reach discharge
Standard, is worth of widely use.
Claims (2)
1. a kind of preparation method of leather waste water adsorbent, it is characterised in that preparation method includes the following steps：
（1）In mass ratio 5 ~ 6：1 ~ 2, flyash, lime stone are calcined at 500 ~ 600 DEG C of temperature, 1 ~ 2h is calcined, must forge
Burning thing, in mass ratio 1：3 ~ 4, calcined material, sodium carbonate liquor are mixed, soak 20 ~ 30min, filtering, obtains immersion filter residue；
（2）Filter residue is crushed, 50 ~ 70 mesh sieves is crossed, obtains sieving, in mass ratio 1：3 ~ 4, by sieving, acetic acid solution into
Row mixing, 5 ~ 6h is stirred at 20 ~ 30 DEG C of temperature, is filtered, is obtained stirring filter residue, will stirring filter residue in 800 ~ 900 DEG C of temperature
Lower melting, is cooled to room temperature, obtains cooling thing, by cooling thing at 100 ~ 110 DEG C of temperature it is dry, obtain dried object a；
（3）In mass ratio 1：3 ~ 4, silica gel, 1.0mol/L acetic acid solutions are mixed, 1 is stirred at 50 ~ 60 DEG C of temperature
~ 2h, obtains stirring thing, counts in parts by weight, takes 10 ~ 15 parts of dried object a, 7 ~ 8 parts of stirring things, 1 ~ 2 part of crosslinking agent, 0.8 ~ 1 portion of salt
Acid solution carries out hybrid reaction, and is stirred 30 ~ 35min, reacts 10 ~ 12h, obtains reactant；
（4）Reactant is filtered, obtains filter residue, filter residue is washed with deionized, the filter residue after must washing, then by after washing
Filter residue at 50 ~ 60 DEG C of temperature dry 12 ~ 15h, dried object b is collected, up to leather waste water adsorbent.
2. the preparation method of leather waste water adsorbent according to claim 1, it is characterised in that the step（3）Middle crosslinking
Agent be sodium polyphosphate, cumyl peroxide it is therein any one.
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| CN201711315737.2A CN107986375A (en) | 2017-12-12 | 2017-12-12 | A kind of preparation method of leather waste water adsorbent |
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| CN201711315737.2A CN107986375A (en) | 2017-12-12 | 2017-12-12 | A kind of preparation method of leather waste water adsorbent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108554135A (en) * | 2018-05-23 | 2018-09-21 | 钦州学院 | A kind of hybrid desiccant and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6251653B2 (en) * | 1984-09-19 | 1987-10-30 | Kogyo Gijutsuin | |
| CN1228036A (en) * | 1996-06-12 | 1999-09-08 | 计划地球工业公司 | Acid contacted enhanced adsorbent and/or catalyst and binder system |
| CN1644506A (en) * | 2004-11-12 | 2005-07-27 | 内蒙古蒙西高新技术集团有限公司 | Method for combination producing alumina and cement from chalk and flyash |
-
2017
- 2017-12-12 CN CN201711315737.2A patent/CN107986375A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6251653B2 (en) * | 1984-09-19 | 1987-10-30 | Kogyo Gijutsuin | |
| CN1228036A (en) * | 1996-06-12 | 1999-09-08 | 计划地球工业公司 | Acid contacted enhanced adsorbent and/or catalyst and binder system |
| CN1644506A (en) * | 2004-11-12 | 2005-07-27 | 内蒙古蒙西高新技术集团有限公司 | Method for combination producing alumina and cement from chalk and flyash |
Non-Patent Citations (1)
| Title |
|---|
| 王榕树等: "《活性氧化铝/硅胶吸附剂对环境水体的脱氟行为研究及应用初探》", 《环境科学学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108554135A (en) * | 2018-05-23 | 2018-09-21 | 钦州学院 | A kind of hybrid desiccant and preparation method thereof |
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