CN108499514A - A kind of phosphorus adsorbent and preparation method thereof based on water supply plant iron aluminium mud - Google Patents
A kind of phosphorus adsorbent and preparation method thereof based on water supply plant iron aluminium mud Download PDFInfo
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- CN108499514A CN108499514A CN201810313321.5A CN201810313321A CN108499514A CN 108499514 A CN108499514 A CN 108499514A CN 201810313321 A CN201810313321 A CN 201810313321A CN 108499514 A CN108499514 A CN 108499514A
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- lanthanum
- phosphorus
- iron aluminium
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- 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
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0207—Compounds of Sc, Y or Lanthanides
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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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention discloses a kind of phosphorus adsorbents and preparation method thereof based on water supply plant iron aluminium mud, belong to aquatic ecological restoration field.The method includes：（1）Lanthanum salt is put into water, and adjusts pH, obtains alkalescent lanthanum suspension；（2）It is sufficiently mixed dry water supply plant iron aluminium mud and the alkalescent lanthanum suspension to obtain mixed solution；（3）By the mixed solution prior to 60 ~ 80 DEG C at cultivate 5 ~ 8h, after in 20 ~ 30 DEG C cultivate 24 ~ 36h；（4）By step（3）Solution after middle culture is directly dried, and obtained solid material is the phosphorus adsorbent.Phosphorus adsorbent of the present invention is provided simultaneously with the adsorpting characteristic of fast absorption and slow equilibrium adsorption.The present invention, which is the input of uncertain external source during environment remediation, can interfere under repairing effect present situation, and the method developed is advantageously implemented water environment and quickly repairs and long-acting maintenance；Invention is beneficial to body eutrophication reparation, promotes the realization of " treatment of wastes with processes of wastes against one another ".
Description
Technical field
The invention belongs to aquatic ecological restoration field, the phosphorus of specially a kind of efficient stable based on water supply plant iron aluminium mud adsorbs
Agent and preparation method thereof.
Background technology
Water supply plant iron aluminium mud is inevitable by-product in drinking water production, main ingredient come in water source impurity and
Water treatment procedure Chinese medicine.In traditional flocculation filtration technique, iron aluminium flocculating agent can be used to remove impurities in water, this also promotees
Make to be rich in iron aluminium in water supply plant iron aluminium mud, up to the 20% of mud total amount.Due to the characteristic rich in iron aluminium, water supply plant iron aluminium mud has
Higher adsorption capacity is often selected to develop efficient phosphorus adsorbent.Such as application No. is CN201511023099.8 to disclose one
The method that kind prepares porous type phosphorus-uptake ceramsite with waterworks sludge；Such as application No. is CN201610914902.5 disclose one kind to
The preparation method of waterworks sludge base dephosphorization granule adsorbent；Application No. is CN201611064123.7 to disclose a kind of activation water supply
Factory's sludge base haydite strengthens it and inhales the method for phosphorus effect；It discloses application No. is CN201210514415.1 and a kind of can receive water body
The pollutants such as nitrogen phosphorus ecology bank protection material and preparation method；Application No. is CN106540650A to disclose a kind of waterworks sludge base
The preparation method of dephosphorization granule adsorbent；Patent No. 201110097991.6 discloses a kind of processing side of domestic sewage of villages and small towns
Method and its equipment；Application No. is CN201510793412.X to disclose a kind of preparation method of water body Endogenous Phosphorus sorbing material；Shen
It number please disclose a kind of bed mud for CN201710424723.8 and lock phosphorus covering material and preparation method thereof；Application No. is
CN201610200212.3 discloses a kind of method that purification plant sludge recycling prepares bed mud covering material；Application No. is
CN201610299497.0 discloses a kind of low energy consumption waterworks sludge miniaturation method；Patent No. ZL201110356506.2
Disclose the preparation method for the pretreated copper water-supply pipe haydite of micro-polluted water；Patent No. ZL01510375835.X is disclosed
A kind of modified peanut charcoal/aluminium polychloride sludge composite adsorbing material；Patent No. ZL 201510312951.7 is public
A kind of multiple pollution adsorbent and preparation method thereof is opened.
From above-mentioned patent it is found that it is numerous that recycling water supply plant iron aluminium mud, which develops efficient phosphorus sorbing material for aquatic ecological restoration,
Environmentalist's focus of attention.However, water supply plant iron aluminium mud is partially slow to the suction-operated of phosphorus, this characteristic so that iron aluminium mud is difficult
Quickly excessive phosphorus in removal water environment.Natural environment is sufficiently complex, and phosphorus had both included the activity in system in polluted water environment
Phosphorus also includes the input of other uncertain external sources, such as the nutriment that plant decline is sustained in the process.As it can be seen that in environment dirt
When dye is repaired, fast absorption can reduce rapidly environmental contaminants with existing various pollutants in response environment, and slow equilibrium adsorption
The pollutant of potential source release, is conducive to the long-acting maintenance of environment remediation in adsorbable environment.It would therefore be highly desirable to find a kind of while having
The adsorbent of standby fast absorption and slow equilibrium adsorption feature.
Invention content
The problems in for the above-mentioned prior art, the present invention provides a kind of efficient stables based on water supply plant iron aluminium mud
Phosphorus adsorbent and preparation method thereof.The adsorbent is inhaled while the slow suction-operated of holding water supply plant iron aluminium mud but also with quick
Attached ability realizes the removal of the phosphorus in water environment the adsorption effect of efficient stable.Again simultaneously to water supply plant iron aluminium mud into
Row recycling realizes " treatment of wastes with processes of wastes against one another ".
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of phosphorus adsorbent based on water supply plant iron aluminium mud, is prepared by following steps：
（1）Lanthanum salt is put into water, and adjusts pH, obtains alkalescent lanthanum suspension, which is containing hydroxide
The mixture of lanthanum and lanthanum ion；
（2）It is sufficiently mixed dry water supply plant iron aluminium mud and the alkalescent lanthanum suspension to obtain mixed solution；
（3）By the mixed solution prior to 60 ~ 80 DEG C at cultivate 5 ~ 8 h, after in 20 ~ 30 DEG C cultivate 24 ~ 36 h；
（4）By step（3）Solution after middle culture is directly dried, and obtained solid material is the phosphorus adsorbent.
Step（1）The pH of the alkalescent lanthanum suspension is 8 ~ 9.
Preferably, step（1）The pH of the alkalescent lanthanum suspension is 9.
Step（1）The method of the adjusting pH is：KOH is added in Xiang Shuizhong or NaOH solution is adjusted；Preceding 4 h, per hour
It adjusts 1 time, then stands 12 h, then adjust 1 time.
Step（1）The lanthanum salt is soluble lanthanum salt.
Preferred lanthanum salt is lanthanum chloride.
Step（2）The preparation method of the water supply plant iron aluminium mud of the drying is：Acquire fresh dehydration water supply plant iron aluminium mud
Afterwards, it is dried, shape of claying into power.
Preferably, step（2）The grain size of the water supply plant iron aluminium mud of the powdered drying is less than 0.178 mm.
Step（2）The mass ratio of the iron aluminium mud and alkalescent lanthanum suspension is 1:1.
Preferably, step（2）Described in alkalescent lanthanum suspension in lanthanum element quality be less than or equal to water supply plant iron
The 5% of aluminium mud.
Preferably, step（3）Described in condition of culture be first to cultivate 5 h, 24 h of rear incubated at room temperature at 60 DEG C.
Step（4）The drying means is directly to air-dry or dry.
The present invention also provides a kind of application methods of the phosphorus adsorbent, including the phosphorus adsorbent are direct plungeed into phosphorous
In the water body of water body or deposit containing continuous release phosphorus.
Advantages of the present invention and useful achievement are mainly reflected in：
（1）The present invention, which is the input of uncertain external source during environment remediation, can interfere under repairing effect present situation, develop
Method is advantageously implemented water environment and quickly repairs and long-acting maintenance.
（2）The raw material of the present invention easily obtain, flow is simple, at low cost, easy to operate, application easy to spread.
（3）Method used in the present invention, lanthanum both can be very good to be carried on iron aluminium mud, after the completion of modification, and can be with
Directly quickly desiccation obtains material, need not be separated by solid-liquid separation, and method is easy, cost is relatively low.
（3）The exploitation of phosphorus adsorbent of the present invention is can not during relying on a kind of common, drinking water treatment
The waste avoided embodies changing waste into resources and utilizes.
（4）Final purpose of the present invention is weakened during environment pollution control not by development features phosphorus adsorbent
Certainty promotes the realization of " treatment of wastes with processes of wastes against one another ".
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair
Bright illustrative embodiments and their description do not constitute the improper restriction to the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is that water supply plant iron aluminium mud is prepared with lanthanum suspension different quality ratio obtained by mixed liquor drying in the embodiment of the present invention 3
Absorption spirogram of the adsorbent to phosphorus.
Fig. 2 is the water supply plant iron aluminium mud of different lanthanum load capacity in the embodiment of the present invention 4（DWTR）Bellamya Aeruginosa Reeve is grown
Influence diagram.
Fig. 3 is the water supply plant iron aluminium mud of different lanthanum load capacity in the embodiment of the present invention 4（DWTR）Specific surface area figure.
Fig. 4 is the water supply plant iron aluminium mud of different lanthanum load capacity in the embodiment of the present invention 4（DWTR）Phosphorus is discharged to plant residue
Fixed character figure.
Specific implementation mode
Embodiment 1
（1）It after acquiring fresh dehydration water supply plant iron aluminium mud, is dried, wears into grain size less than 0.178 mm particles.
（2）Lanthanum chloride is put into water so that the mass fraction of lanthanum is respectively 0%, 1%, 2.5%, 5%, 10% and 20%, is used in combination
NaOH solution adjusts pH, preceding 4 h, and adjusting 1 time per hour makes its pH be 8 ~ 9, then stands 12 h, then adjust 1 time, obtaining pH is
9 alkalescent lanthanum suspension, the alkalescent lanthanum suspension are the mixture containing lanthanum hydroxide and lanthanum ion；
（3）By step（1）The water supply plant iron aluminium mud of obtained drying is with the alkalescent lanthanum suspension by 1：1 mass ratio is mixed
It closes so that the quality of lanthanum is respectively 0%, 1%, 2.5%, 5%, 10% and the 20% of water supply plant iron aluminium mud；
（4）The solution is sufficiently mixed with blender, by mixed solution prior to 60 DEG C at cultivate 5 h, then in incubated at room temperature
24 h；
（5）By step（4）Solution directly air-dries after middle culture, and obtained solid material is the phosphorus adsorbent.
Embodiment 2
（1）It after acquiring fresh dehydration water supply plant iron aluminium mud, is dried, wears into grain size less than 0.178 mm particles.
（2）Lanthanum chloride is put into water so that the mass fraction of lanthanum is 5%, and KOH solution is used in combination to adjust pH, preceding 4 h, per small
When adjust its pH made for 1 time to be 8 ~ 9, then stand 12 h, then adjust 1 time, obtain the alkalescent lanthanum suspension that pH is 8, the weak base
Property lanthanum suspension be the mixture containing lanthanum hydroxide and lanthanum ion；
（3）By step（1）The water supply plant iron aluminium mud of obtained drying is with the alkalescent lanthanum suspension by 1:1 mass ratio mixes,
So that the quality of lanthanum is the 5% of water supply plant iron aluminium mud；
（4）The solution is sufficiently mixed with blender, by mixed solution prior to 80 DEG C at cultivate 8 h, then in 20 DEG C ~ 30
DEG C culture 36 h；
（5）By step（4）Solution is directly dried after middle culture, and obtained solid material is the phosphorus adsorbent.
3 comparative example of embodiment
（1）It after acquiring fresh dehydration water supply plant iron aluminium mud, is dried, wears into grain size less than 0.178 mm particles；
（2）Will lanthanum chloride put into water in so that the mass fraction of lanthanum be 10%, 5% and 0.5%, be used in combination NaOH solution adjust pH, preceding 4
H, adjusting 1 time per hour makes its pH be 8 ~ 9, then stands 12 h, then adjust 1 time, obtains the alkalescent lanthanum suspension that pH is 8,
The alkalescent lanthanum suspension is the mixture containing lanthanum hydroxide and lanthanum ion；
（3）By step（1）The water supply plant iron aluminium mud of obtained drying is with the alkalescent lanthanum suspension respectively by 2:1、1:1 and 1:
10 mass ratioes mix so that the quality of lanthanum is consistent relative to water supply plant iron aluminium mud, that is, is 5%；
（4）The solution is sufficiently mixed with blender, by mixed solution prior to 80 DEG C at cultivate 8 h, then in 20 DEG C ~ 30
DEG C culture 36 h；
（5）By step（4）Solution convection drying after middle culture, obtained solid material are the phosphorus adsorbent.
Step（3）Middle different quality is than obtained mixed liquor, in step（5）Middle drying time is compared as follows：When with 20 DEG C ~
Air-dried at 30 DEG C for drying means when, water supply plant iron aluminium mud and lanthanum suspension press 2:1 and 1:The mixed liquor that 1 mass ratio is mixed to prepare
The convection drying time is less than or equal to 120 h；Water supply plant iron aluminium mud presses 1 with lanthanum suspension:The mixing that 10 mass ratioes are mixed to prepare
Liquid is centrifuged through 4000 rmp rotating speeds of centrifuge, and after being separated by solid-liquid separation, obtained solid material drying time is less than or equal to 120
h；And water supply plant iron aluminium mud presses 1 with lanthanum suspension:The mixed liquor convection drying time that 10 mass ratioes are mixed to prepare be more than or equal to
480 h；When drying is drying means at 60 DEG C ~ 80 DEG C, water supply plant iron aluminium mud presses 2 with lanthanum suspension:1 and 1:1 mass ratio
The mixed liquor convection drying time being mixed to prepare is less than or equal to 12 h；Water supply plant iron aluminium mud presses 1 with lanthanum suspension:10 mass ratioes
The mixed liquor being mixed to prepare is centrifuged through 4000 rmp rotating speeds of centrifuge, after being separated by solid-liquid separation, obtained solid material drying time
To be less than or equal to 12 h；And water supply plant iron aluminium mud presses 1 with lanthanum suspension:When the mixed liquor convection drying that 10 mass ratioes are mixed to prepare
Between for more than or equal to 120 h.
Water supply plant iron aluminium mud is with lanthanum suspension different quality than preparing absorption of the adsorbent to phosphorus obtained by mixed liquor drying
Amount is shown in Fig. 1.Water supply plant iron aluminium mud presses 2 with lanthanum suspension:Adsorbent obtained by 1 mass ratio is unstable to phosphorus adsorbance, Duplicate Samples
Between error it is very big, be approximately equal to 60%；However, water supply plant iron aluminium mud presses 1 with lanthanum suspension:1 and 1:10 mass ratioes are obtained to be inhaled
Attached dose is relatively stablized phosphorus adsorbance, and the error between Duplicate Samples is relatively low, is less than or equal to 10%.Therefore, consider drying
The stability that time, dry pretreatment process and lanthanum load prepares the best water supply plant iron aluminium mud and lanthanum suspension of phosphorus adsorbent
Mass ratio is 1:1.
Embodiment 4
With the phosphorus adsorbent mixing natural surface water culture Bellamya Aeruginosa Reeve synthesized by embodiment 1, using plant residue as spiral shell food,
Continuous aeration oxygen, incubation time are 120 d, reflect the potential environmental risk of material by measuring the high variation of spiral shell, see
Fig. 2.From the point of view of the high data of spiral shell（Fig. 2）, adding for material shows inhibiting effect to the growth of spiral shell, and lanthanum load capacity is 10%
Phosphorus adsorbent group with 20% is relatively more apparent.Therefore, it is the safety for ensureing ecological, the lanthanum load percentage of the phosphorus adsorbent
5% should be less than.
The specific surface area of the phosphorus adsorbent of different lanthanum load capacity is shown in Fig. 3.With the increase of lanthanum load capacity, the ratio of phosphorus adsorbent
Surface area gradually increases, this shows that the load of lanthanum improves the sorption potential of phosphorus adsorbent.
The phosphorus adsorbent of different lanthanum load capacity is shown in Fig. 4 to plant residue release phosphorus fixation feature.Plant residue with it is natural
After surface water mixing (plant decay is degraded in simulation natural water body), obtained phosphorus adsorbent is added directly in mixed solution
In, 60 d are cultivated at room temperature；Blank group is set, i.e., does not add phosphorus adsorbent.It can be seen that the plant residue in blank group
Add phosphorus concentration in water body promoted to increase rapidly, and over time, the phosphorus of plant residue release still gradually increases,
It can be seen that the phosphorus release action that plant residue rots includes two release of initial stage rapid, high volume, later stage slow release processes；Lanthanum loads
Amount promotes phosphorus in water body to continuously decrease for 0 adding for adsorbent.The adding for phosphorus adsorbent of lanthanum load causes phosphorus in water body fast
Speed reduces, and phosphorus concentration in water body is made to be maintained at lower level during entire experiment；Lanthanum load capacity is higher, and this promotion is made
With more apparent.Phosphorus adsorbent of the present invention known to taking plant residue phosphorus release action feature into consideration is successfully realized fast absorption
With the feature of slow equilibrium adsorption.
It is emphasized that although above-described embodiment contrasts detailed description to the present invention, these explanations are
It is illustrative to the present invention, rather than limiting the invention, any innovation and creation without departing from true spirit,
It falls within that scope of the present invention.
Claims (10)
1. a kind of phosphorus adsorbent based on water supply plant iron aluminium mud, which is characterized in that be prepared by following steps：
（1）Lanthanum salt is put into water, and adjusts pH, obtains alkalescent lanthanum suspension；
（2）It is sufficiently mixed dry water supply plant iron aluminium mud and the alkalescent lanthanum suspension to obtain mixed solution；
（3）By the mixed solution prior to 60 ~ 80 DEG C at cultivate 5 ~ 8 h, after in 20 ~ 30 DEG C cultivate 24 ~ 36 h；
（4）By step（3）Solution after middle culture is directly dried, and obtained solid material is the phosphorus adsorbent.
2. phosphorus adsorbent according to claim 1, which is characterized in that step（2）The iron aluminium mud is outstanding with alkalescent lanthanum
The mass ratio of turbid is 1:1.
3. phosphorus adsorbent according to claim 2, which is characterized in that step（2）Described in alkalescent lanthanum suspension in
Lanthanum element quality be less than or equal to the iron aluminium shale amount 5%.
4. phosphorus adsorbent according to claim 1, which is characterized in that step（1）The pH of the alkalescent lanthanum suspension
It is 8 ~ 9；Preferred pH is 9.
5. phosphorus adsorbent according to claim 1, which is characterized in that step（1）The method of the adjusting pH is：Xiang Shui
Middle addition KOH or NaOH solution are adjusted；Preceding 4 h is adjusted 1 time per hour, then stands 12 h, then adjust 1 time.
6. phosphorus adsorbent according to claim 1, which is characterized in that step（1）The lanthanum salt is soluble lanthanum salt.
7. phosphorus adsorbent according to claim 5, which is characterized in that the lanthanum salt is lanthanum chloride.
8. phosphorus adsorbent according to claim 1, which is characterized in that step（2）The water supply plant iron aluminium mud of the drying
Preparation method be：After acquiring fresh dehydration water supply plant iron aluminium mud, it is dried, shape of claying into power.
9. phosphorus adsorbent according to claim 1, which is characterized in that step（3）Described in condition of culture be first 60 DEG C
Lower culture 5 h, 24 h of rear incubated at room temperature.
10. a kind of application method of any phosphorus adsorbent of claim 1 ~ 9, which is characterized in that including adsorbing the phosphorus
Agent direct plunges into the water body of the deposit containing phosphorus water or containing continuous release phosphorus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810313321.5A CN108499514A (en) | 2018-04-10 | 2018-04-10 | A kind of phosphorus adsorbent and preparation method thereof based on water supply plant iron aluminium mud |
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| CN201810313321.5A CN108499514A (en) | 2018-04-10 | 2018-04-10 | A kind of phosphorus adsorbent and preparation method thereof based on water supply plant iron aluminium mud |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110683834A (en) * | 2019-11-13 | 2020-01-14 | 武汉理工大学 | Water permeable brick capable of removing various pollutants and preparation method thereof |
| CN114177881A (en) * | 2021-12-06 | 2022-03-15 | 中科智清生态技术(苏州)有限公司 | Lanthanum-alumina material for removing total phosphorus in river and preparation method thereof |
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| CN104525090A (en) * | 2014-12-01 | 2015-04-22 | 四川大学 | Absorbent used in sewage phosphorus removal, and preparation method thereof |
| CN104874360A (en) * | 2015-06-10 | 2015-09-02 | 中国科学院南京地理与湖泊研究所 | Multiple-contaminated adsorbent and preparation method thereof |
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| CN103408094A (en) * | 2013-05-29 | 2013-11-27 | 北京师范大学 | Method for removing phosphorus from town sewage by recycling waste sludge of water supply plant |
| CN103848471A (en) * | 2013-09-03 | 2014-06-11 | 北京师范大学 | Method for removing organophosphorus pesticide in water by using water treatment plant sludge |
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| CN110683834B (en) * | 2019-11-13 | 2022-07-08 | 武汉理工大学 | Water permeable brick capable of removing various pollutants and preparation method thereof |
| CN114177881A (en) * | 2021-12-06 | 2022-03-15 | 中科智清生态技术(苏州)有限公司 | Lanthanum-alumina material for removing total phosphorus in river and preparation method thereof |
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Application publication date: 20180907 |