CN106582541A - Composite used for heavy metal wastewater treatment and preparation method thereof - Google Patents
Composite used for heavy metal wastewater treatment and preparation method thereof Download PDFInfo
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- CN106582541A CN106582541A CN201611241369.7A CN201611241369A CN106582541A CN 106582541 A CN106582541 A CN 106582541A CN 201611241369 A CN201611241369 A CN 201611241369A CN 106582541 A CN106582541 A CN 106582541A
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- 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
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/046—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium containing halogens, e.g. halides
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- 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
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- 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
- B01J20/14—Diatomaceous earth
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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
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
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- 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
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/223—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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Abstract
The invention discloses a composite used for heavy metal wastewater treatment and a preparation method thereof. The composite used for heavy metal wastewater treatment is composed of the raw materials of, by weight, 20-30 parts of kieselguhr, 15-25 parts of fly ash, 10-20 parts of zeolite powder, 20-40 parts of mesoporous molecular sieves, 40-60 parts of edetate disodium, 70-80 parts of sodium chloride and 30-50 parts of magnesium chloride. The adsorption material prepared through joint effects of a porous structure prepared through the kieselguhr, the fly ash, the zeolite powder and the mesoporous molecular sieves is very high in adsorption capacity and reducing capacity, multiple heavy metal ions such as lead ions, cadmium ions and chromium ions in a water body can be efficiently removed, and the composite has the advantages of high removal rate and high reaction rate; and zinc ions and magnesium ions are loaded on the adsorption material and have the effect of synergism, the heavy metal reducing capacity is higher, and deep removal can be achieved.
Description
Technical field
The present invention relates to technical field of sewage, specifically a kind of composite for heavy metal containing wastewater treatment and its
Preparation method.
Background technology
Heavy metal can not be degraded by microorganisms, and can in vivo be enriched with and cause notable poisonous effect, be a kind of lasting
Contact scar thing.Such as hydrargyrum, cadmium, chromium, lead, arsenic serious harm health, destroy aquatic ecosystem, make agricultural and the fishery underproduction
Deng the economic loss for causing is huge, becomes the significant problem that restriction China economy, social development and the people's livelihood improve.For a huge sum of money
Category pollution, such as the multiple water treatment method that people have developed, chemical precipitation method, ferrite process, absorption method, ion exchange, electricity
, all there are some shortcoming and defect in solution, reverse osmosiss, electroosmose process, enhancing ultrafiltration method, bioanalysises etc.：(1) some processing costs
Chelate precipitation, ion exchange in height, such as enhancing ultrafiltration method, electroosmose process, chemical precipitation method；(2) some techniques are answered
It is miscellaneous, cumbersome, such as ferrite process, enhancing ultrafiltration method；(3) some treatment effects do not reach requirement, such as the traditional chemical sedimentation method；
(4) some bad adaptabilities, such as bioanalysises, electrolysis, ferrite process；(5) some equipment investments are big, such as reverse osmosiss, electroosmose process.
Compare with above-mentioned processing method, absorption method is by the big porous material of specific surface area, such as activated carbon, fine coal
Ash, activated sludge ash, zeolite, biomaterial, manganese oxide, Pericarppium arachidis hypogaeae and kieselguhr etc., make heavy metal ion in the surface of solids not
It is enriched with the presence of the molecular attraction or chemical bond force of balance and separates.Due to these adsorbent wide material sources and inexpensive, cause
The extensive attention of field of water treatment, becomes a kind of very promising process for treating heavy-metal waste water.But these adsorbents are universal
There is adsorption capacity low, consumption is big, the problems such as the removal efficiency of heavy metal is not high enough.If at effectively desorption mode
Reason, often produces a large amount of waste residues.
The content of the invention
It is an object of the invention to provide a kind of low cost, preparation are conveniently used for the composite of heavy metal containing wastewater treatment
And preparation method thereof, to solve the problems, such as above-mentioned background technology in propose.
For achieving the above object, the present invention provides following technical scheme：
A kind of composite for heavy metal containing wastewater treatment, is made up of the raw material of following weight portion：Kieselguhr 20-30
Part, flyash 15-25 parts, zeolite powder 10-20 parts, mesopore molecular sieve 20-40 parts, ethylenediaminetetraacetic acid metal sodium salt 40-60 parts,
Sodium Chloride 70-80 part, magnesium chloride 30-50 parts.
As further scheme of the invention：The composite for heavy metal containing wastewater treatment, by following weight portion
Raw material composition：Kieselguhr 22-28 parts, flyash 18-22 parts, zeolite powder 12-18 parts, mesopore molecular sieve 25-35 parts, ethylenediamine
Tetraacethyl metal sodium salt 45-55 parts, Sodium Chloride 72-78 part, magnesium chloride 35-45 parts.
As further scheme of the invention：The composite for heavy metal containing wastewater treatment, by following weight portion
Raw material composition：25 parts of kieselguhr, 20 parts of flyash, 15 parts of zeolite powder, 30 parts of mesopore molecular sieve, ethylenediaminetetraacetic acid metallic sodium
50 parts of salt, 75 parts of Sodium Chloride, 40 parts of magnesium chloride.
The preparation method of the composite for heavy metal containing wastewater treatment, comprises the following steps that：
(1) each raw material is weighed according to weight portion；
(2) by ethylenediaminetetraacetic acid metal sodium salt according to mass ratio 1-1.5：1 dissolving in deionized water, is configured to second two
Amine tetraacethyl metal sodium salt solution, then mesopore molecular sieve is impregnated in ethylenediaminetetraacetic acid metal sodium salt solution impregnate 10-
14h, makes ethylenediaminetetraacetic acid metal sodium salt solution be impregnated into molecular sieve pore passage, and carries out supersound process 3-5h, then evacuation
1-2h is processed, 1-3h is then centrifuged under the rotating speed of 2000-4000r/min, precipitation mixture is taken out, in 50-70 DEG C of temperature
Lower vacuum drying 4-8h, it is stand-by；
(3) product that kieselguhr, flyash, zeolite powder and step (1) are obtained is carried out together the protection in noble gases
Under, fire 1-3h in 1100-1300 DEG C of quartz tube furnace and obtain matrices of composite material；
(4) after the hydrochloric acid solution immersion 15-20h by above-mentioned matrices of composite material with 2-4mol/L, deionized water is rinsed
To its pH value to 6.0-7.0, aqueous solution is then removed, it is stand-by after being dried；Sodium Chloride and magnesium chloride are each configured to into 3-5mol/
The sodium chloride solution and magnesium chloride solution of L, it is standby；
(5) matrices of composite material after drying is immersed in sodium chloride solution, in 25-35 DEG C, the bar of 180-200r/min
Oscillating reactionss under part, after oscillating reactionss 20-24h reactant liquor is removed, obtain adsorb zinc ion composite, then will absorption zinc from
The composite of son is immersed in magnesium chloride solution, the oscillating reactionss under conditions of 35-40 DEG C, 210-230r/min, and vibration is anti-
Answer and remove after 20-24h reactant liquor, deionized water is rinsed 3-7 and removes aqueous solution all over rear separation, obtains the composite wood of saturation absorption
Material；
(6) with the sodium hydroxide solution of mass fraction 0.1-0.3%, the sodium borohydride solution of 1-2mol/L is prepared, by boron
After sodium hydride solution is added in the composite that saturation is adsorbed, the oscillating reactionss under 150-170rm/min, oscillating reactionss 10-
Partial reaction liquid is removed after 30min, is then washed again to neutrality, drying is to composite finished product.
As further scheme of the invention：The noble gases are nitrogen or argon.
Compared with prior art, the invention has the beneficial effects as follows：
The collective effect that the present invention passes through loose structure obtained in kieselguhr, flyash, zeolite powder and mesopore molecular sieve,
The adsorbing material for preparing has very strong absorbability and reducing power, is capable of achieving contents of many kinds of heavy metal ion such as lead in water body
The efficient removal of ion, cadmium ion and chromium ion, has the advantages that clearance height, reaction rate are fast, by zinc ion and magnesium ion
Load on the adsorbent material, play potentiation, the ability of reducing heavy metal is higher, it is possible to achieve deep removal.
Specific embodiment
The technical scheme of this patent is described in more detail with reference to specific embodiment.
Embodiment 1
A kind of composite for heavy metal containing wastewater treatment, is made up of the raw material of following weight portion：20 parts of kieselguhr, powder
15 parts of coal ash, 10 parts of zeolite powder, 20 parts of mesopore molecular sieve, 40 parts of ethylenediaminetetraacetic acid metal sodium salt, 70 parts of Sodium Chloride, magnesium chloride
30 parts.
The preparation method of the composite for heavy metal containing wastewater treatment, comprises the following steps that：
(1) each raw material is weighed according to weight portion；
(2) by ethylenediaminetetraacetic acid metal sodium salt according to mass ratio 1：1 dissolving in deionized water, is configured to ethylenediamine tetraacetic
Acetic acid metal sodium salt solution, then mesopore molecular sieve is impregnated in ethylenediaminetetraacetic acid metal sodium salt solution impregnate 10h, makes second
Ethylenediamine tetraacetic acid (EDTA) metal sodium salt solution is impregnated into molecular sieve pore passage, and carries out supersound process 3h, then evacuation processes 1h, then
1h is centrifuged under the rotating speed of 2000r/min, precipitation mixture is taken out, 4h is vacuum dried at a temperature of 50 DEG C, it is stand-by；
(3) product that kieselguhr, flyash, zeolite powder and step (1) are obtained is carried out together under the protection of argon, in
1h is fired in 1100 DEG C of quartz tube furnace and obtains matrices of composite material；
(4) after the hydrochloric acid solution immersion 15h by above-mentioned matrices of composite material with 2mol/L, deionized water is rinsed to its pH
It is worth to 6.0, then removes aqueous solution, it is stand-by after being dried；The Sodium Chloride that Sodium Chloride and magnesium chloride are each configured to into 3mol/L is molten
Liquid and magnesium chloride solution, it is standby；
(5) matrices of composite material after drying is immersed in sodium chloride solution, is vibrated under conditions of 25 DEG C, 180r/min
Reaction, after oscillating reactionss 20h reactant liquor is removed, and obtains adsorbing the composite of zinc ion, then will adsorb the composite wood of zinc ion
Material is immersed in magnesium chloride solution, and the oscillating reactionss under conditions of 35 DEG C, 210r/min remove reactant liquor after oscillating reactionss 20h,
Deionized water is separated after rinsing 3 times and removes aqueous solution, obtains the composite of saturation absorption；
(6) with the sodium hydroxide solution of mass fraction 0.1%, the sodium borohydride solution of 1mol/L is prepared, by sodium borohydride
After solution is added in the composite that saturation is adsorbed, the oscillating reactionss under 150rm/min remove part after oscillating reactionss 10min
Reactant liquor, then washs again to neutrality, and drying is to composite finished product.
Embodiment 2
A kind of composite for heavy metal containing wastewater treatment, is made up of the raw material of following weight portion：25 parts of kieselguhr, powder
20 parts of coal ash, 15 parts of zeolite powder, 30 parts of mesopore molecular sieve, 50 parts of ethylenediaminetetraacetic acid metal sodium salt, 75 parts of Sodium Chloride, magnesium chloride
40 parts.
The preparation method of the composite for heavy metal containing wastewater treatment, comprises the following steps that：
(1) each raw material is weighed according to weight portion；
(2) by ethylenediaminetetraacetic acid metal sodium salt according to mass ratio 1.2：1 dissolving in deionized water, is configured to ethylenediamine
Tetraacethyl metal sodium salt solution, then mesopore molecular sieve is impregnated in ethylenediaminetetraacetic acid metal sodium salt solution impregnate 12h, is made
Ethylenediaminetetraacetic acid metal sodium salt solution is impregnated into molecular sieve pore passage, and carries out supersound process 4h, then evacuation processes 1.5h,
Then 2h is centrifuged under the rotating speed of 3000r/min, precipitation mixture is taken out, 6h is vacuum dried at a temperature of 60 DEG C, it is stand-by；
(3) product that kieselguhr, flyash, zeolite powder and step (1) are obtained is carried out together under the protection of nitrogen, in
2h is fired in 1200 DEG C of quartz tube furnace and obtains matrices of composite material；
(4) after the hydrochloric acid solution immersion 18h by above-mentioned matrices of composite material with 3mol/L, deionized water is rinsed to its pH
It is worth to 6.5, then removes aqueous solution, it is stand-by after being dried；The Sodium Chloride that Sodium Chloride and magnesium chloride are each configured to into 4mol/L is molten
Liquid and magnesium chloride solution, it is standby；
(5) matrices of composite material after drying is immersed in sodium chloride solution, is vibrated under conditions of 30 DEG C, 190r/min
Reaction, after oscillating reactionss 22h reactant liquor is removed, and obtains adsorbing the composite of zinc ion, then will adsorb the composite wood of zinc ion
Material is immersed in magnesium chloride solution, and the oscillating reactionss under conditions of 38 DEG C, 220r/min remove reactant liquor after oscillating reactionss 22h,
Deionized water is separated after rinsing 5 times and removes aqueous solution, obtains the composite of saturation absorption；
(6) with the sodium hydroxide solution of mass fraction 0.2%, the sodium borohydride solution of 1.5mol/L is prepared, by hydroboration
After sodium solution is added in the composite that saturation is adsorbed, the oscillating reactionss under 160rm/min, removal portion after oscillating reactionss 20min
Divide reactant liquor, then wash again to neutrality, drying is to composite finished product.
Embodiment 3
A kind of composite for heavy metal containing wastewater treatment, is made up of the raw material of following weight portion：30 parts of kieselguhr, powder
25 parts of coal ash, 20 parts of zeolite powder, 40 parts of mesopore molecular sieve, 60 parts of ethylenediaminetetraacetic acid metal sodium salt, 80 parts of Sodium Chloride, magnesium chloride
50 parts.
The preparation method of the composite for heavy metal containing wastewater treatment, comprises the following steps that：
(1) each raw material is weighed according to weight portion；
(2) by ethylenediaminetetraacetic acid metal sodium salt according to mass ratio 1.5：1 dissolving in deionized water, is configured to ethylenediamine
Tetraacethyl metal sodium salt solution, then mesopore molecular sieve is impregnated in ethylenediaminetetraacetic acid metal sodium salt solution impregnate 14h, is made
Ethylenediaminetetraacetic acid metal sodium salt solution is impregnated into molecular sieve pore passage, and carries out supersound process 5h, then evacuation processes 2h, so
3h is centrifuged under the rotating speed of 4000r/min afterwards, precipitation mixture is taken out, 8h is vacuum dried at a temperature of 70 DEG C, it is stand-by；
(3) product that kieselguhr, flyash, zeolite powder and step (1) are obtained is carried out together under the protection of argon, in
3h is fired in 1300 DEG C of quartz tube furnace and obtains matrices of composite material；
(4) after the hydrochloric acid solution immersion 20h by above-mentioned matrices of composite material with 4mol/L, deionized water is rinsed to its pH
It is worth to 7.0, then removes aqueous solution, it is stand-by after being dried；The Sodium Chloride that Sodium Chloride and magnesium chloride are each configured to into 5mol/L is molten
Liquid and magnesium chloride solution, it is standby；
(5) matrices of composite material after drying is immersed in sodium chloride solution, is vibrated under conditions of 35 DEG C, 200r/min
Reaction, after oscillating reactionss 24h reactant liquor is removed, and obtains adsorbing the composite of zinc ion, then will adsorb the composite wood of zinc ion
Material is immersed in magnesium chloride solution, and the oscillating reactionss under conditions of 40 DEG C, 230r/min remove reactant liquor after oscillating reactionss 24h,
Deionized water is separated after rinsing 7 times and removes aqueous solution, obtains the composite of saturation absorption；
(6) with the sodium hydroxide solution of mass fraction 0.3%, the sodium borohydride solution of 2mol/L is prepared, by sodium borohydride
After solution is added in the composite that saturation is adsorbed, the oscillating reactionss under 170rm/min remove part after oscillating reactionss 30min
Reactant liquor, then washs again to neutrality, and drying is to composite finished product.
Embodiment 4
A kind of composite for heavy metal containing wastewater treatment, is made up of the raw material of following weight portion：22 parts of kieselguhr, powder
18 parts of coal ash, 12 parts of zeolite powder, 25 parts of mesopore molecular sieve, 45 parts of ethylenediaminetetraacetic acid metal sodium salt, 728 parts of Sodium Chloride, chlorination
35 parts of magnesium.
The preparation method of the composite for heavy metal containing wastewater treatment is with embodiment 2.
Embodiment 5
A kind of composite for heavy metal containing wastewater treatment, is made up of the raw material of following weight portion：28 parts of kieselguhr, powder
22 parts of coal ash, 18 parts of zeolite powder, 35 parts of mesopore molecular sieve, 55 parts of ethylenediaminetetraacetic acid metal sodium salt, 78 parts of Sodium Chloride, magnesium chloride
45 parts.
The preparation method of the composite for heavy metal containing wastewater treatment is with embodiment 2.
Comparative example 1
Comparative example 1 is in addition to without zeolite powder, and remaining proportioning is consistent with embodiment 2 with preparation process.
Comparative example 2
Comparative example 2 is in addition to without mesopore molecular sieve, and remaining proportioning is consistent with embodiment 2 with preparation process.
Comparative example 3
Comparative example 3 is in addition to not sodium chloride-containing, and remaining proportioning is consistent with embodiment 2 with preparation process.
Comparative example 4
Comparative example 4 is in addition to not magnesium chloride containing, and remaining proportioning is consistent with embodiment 2 with preparation process.
Embodiment 6
Weigh quality respectively for 0.02g embodiments 1-5 and comparative example 1-4 adsorbing material in conical flask with cover, respectively plus
Enter 2.0 × 10-3The aqueous solution 20mL of the Au (III) of mol/L, Hg (II), Pb (II), Ni (II), Co (II) and Cd (II), is placed in
24h is vibrated in gas bath agitator；Using the concentration of remaining heavy metal ion in Solution by Atomic Absorption Spectrophotometry.Counted with (formula 1)
Adsorbance q (mg/g) of the adsorbing material of embodiment 1-5 and comparative example 1-4 is calculated,
In formula, q is adsorbance (mg/g)；Concentration (the μ g/ of the metal ion before and after Co and Ce respectively absorption in solution
mL)；V is reaction solution volume (L)；W is adsorbent mass (g).
The adsorbance effect of table 1 compares
As shown in Table 1, the composite that prepared by the inventive method may be selected absorption Au (III), Hg (II), Pb (II) and Co
(II) effect of many kinds of metal ions such as, its absorption Au (III) and Hg (II) is especially pronounced.
The collective effect that the present invention passes through loose structure obtained in kieselguhr, flyash, zeolite powder and mesopore molecular sieve,
The adsorbing material for preparing has very strong absorbability and reducing power, is capable of achieving contents of many kinds of heavy metal ion such as lead in water body
The efficient removal of ion, cadmium ion and chromium ion, has the advantages that clearance height, reaction rate are fast, by zinc ion and magnesium ion
Load on the adsorbent material, play potentiation, the ability of reducing heavy metal is higher, it is possible to achieve deep removal.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
Formula, in the ken that one skilled in the relevant art possesses, can be with the premise of without departing from this patent objective
Various changes can be made.
Claims (5)
1. a kind of composite for heavy metal containing wastewater treatment, it is characterised in that be made up of the raw material of following weight portion：Diatom
Native 20-30 parts, flyash 15-25 parts, zeolite powder 10-20 parts, mesopore molecular sieve 20-40 parts, ethylenediaminetetraacetic acid metal sodium salt
40-60 parts, Sodium Chloride 70-80 part, magnesium chloride 30-50 parts.
2. the composite for heavy metal containing wastewater treatment according to claim 1, it is characterised in that by following weight portion
Raw material composition：Kieselguhr 22-28 parts, flyash 18-22 parts, zeolite powder 12-18 parts, mesopore molecular sieve 25-35 parts, ethylenediamine
Tetraacethyl metal sodium salt 45-55 parts, Sodium Chloride 72-78 part, magnesium chloride 35-45 parts.
3. the composite for heavy metal containing wastewater treatment according to claim 1, it is characterised in that by following weight portion
Raw material composition：25 parts of kieselguhr, 20 parts of flyash, 15 parts of zeolite powder, 30 parts of mesopore molecular sieve, ethylenediaminetetraacetic acid metallic sodium
50 parts of salt, 75 parts of Sodium Chloride, 40 parts of magnesium chloride.
4. a kind of preparation method of the composite for heavy metal containing wastewater treatment as described in claim 1-3 is arbitrary, it is special
Levy and be, comprise the following steps that：
(1) each raw material is weighed according to weight portion；
(2) by ethylenediaminetetraacetic acid metal sodium salt according to mass ratio 1-1.5：1 dissolving in deionized water, is configured to ethylenediamine tetraacetic
Acetic acid metal sodium salt solution, then mesopore molecular sieve is impregnated in ethylenediaminetetraacetic acid metal sodium salt solution impregnate 10-14h,
Make ethylenediaminetetraacetic acid metal sodium salt solution be impregnated into molecular sieve pore passage, and carry out supersound process 3-5h, then evacuation is processed
1-2h, is then centrifuged 1-3h under the rotating speed of 2000-4000r/min, takes out precipitation mixture, true at a temperature of 50-70 DEG C
Sky is dried 4-8h, stand-by；
(3) product that kieselguhr, flyash, zeolite powder and step (1) are obtained is carried out together under the protection of noble gases, in
1-3h is fired in 1100-1300 DEG C of quartz tube furnace and obtains matrices of composite material；
(4) after the hydrochloric acid solution immersion 15-20h by above-mentioned matrices of composite material with 2-4mol/L, deionized water is rinsed to it
Then pH value removes aqueous solution to 6.0-7.0, stand-by after being dried；Sodium Chloride and magnesium chloride are each configured to into 3-5mol/L's
Sodium chloride solution and magnesium chloride solution, it is standby；
(5) matrices of composite material after drying is immersed in sodium chloride solution, under conditions of 25-35 DEG C, 180-200r/min
Oscillating reactionss, after oscillating reactionss 20-24h reactant liquor is removed, and obtains adsorbing the composite of zinc ion, then will adsorb zinc ion
Composite is immersed in magnesium chloride solution, the oscillating reactionss under conditions of 35-40 DEG C, 210-230r/min, oscillating reactionss 20-
Reactant liquor is removed after 24h, deionized water is rinsed 3-7 and removes aqueous solution all over rear separation, obtains the composite of saturation absorption；
(6) with the sodium hydroxide solution of mass fraction 0.1-0.3%, the sodium borohydride solution of 1-2mol/L is prepared, by hydroboration
After sodium solution is added in the composite that saturation is adsorbed, the oscillating reactionss under 150-170rm/min, after oscillating reactionss 10-30min
Partial reaction liquid is removed, is then washed again to neutrality, drying is to composite finished product.
5. the preparation method of the composite for heavy metal containing wastewater treatment according to claim 4, it is characterised in that institute
Noble gases are stated for nitrogen or argon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109289759A (en) * | 2018-11-23 | 2019-02-01 | 张少强 | The integrating device of solid base adsorbent and synchronization process sour gas and organic exhaust gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109289759A (en) * | 2018-11-23 | 2019-02-01 | 张少强 | The integrating device of solid base adsorbent and synchronization process sour gas and organic exhaust gas |
| CN109289759B (en) * | 2018-11-23 | 2021-06-18 | 张少强 | Solid alkali adsorbent and integrated device for synchronously treating acid gas and organic waste gas |
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