CN105948307B - A kind for the treatment of process of lead waste water - Google Patents
A kind for the treatment of process of lead waste water Download PDFInfo
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- CN105948307B CN105948307B CN201610313618.2A CN201610313618A CN105948307B CN 105948307 B CN105948307 B CN 105948307B CN 201610313618 A CN201610313618 A CN 201610313618A CN 105948307 B CN105948307 B CN 105948307B
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- montmorillonite
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- 239000002351 wastewater Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 45
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical class O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 117
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 66
- 239000002250 absorbent Substances 0.000 claims abstract description 41
- 230000002745 absorbent Effects 0.000 claims abstract description 41
- 238000010521 absorption reaction Methods 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 75
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 42
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 28
- 230000002687 intercalation Effects 0.000 claims description 25
- 238000009830 intercalation Methods 0.000 claims description 25
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 24
- 239000006185 dispersion Substances 0.000 claims description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 19
- 238000000746 purification Methods 0.000 claims description 19
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 15
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 14
- -1 aluminum ions Chemical class 0.000 claims description 12
- 239000011780 sodium chloride Substances 0.000 claims description 12
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 7
- 238000003556 assay Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 7
- 238000009210 therapy by ultrasound Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 235000011056 potassium acetate Nutrition 0.000 claims description 5
- 239000004575 stone Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004065 wastewater treatment Methods 0.000 abstract description 5
- 239000000243 solution Substances 0.000 description 40
- 239000011229 interlayer Substances 0.000 description 8
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 7
- 235000019441 ethanol Nutrition 0.000 description 6
- 239000002585 base Substances 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000000527 sonication Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009388 chemical precipitation Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- RVPVRDXYQKGNMQ-UHFFFAOYSA-N lead(2+) Chemical compound [Pb+2] RVPVRDXYQKGNMQ-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 206010029240 Neuritis Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000002156 adsorbate Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 208000007502 anemia Diseases 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000010336 energy treatment Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000037406 food intake Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003254 gasoline additive Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- DNHVXYDGZKWYNU-UHFFFAOYSA-N lead;hydrate Chemical compound O.[Pb] DNHVXYDGZKWYNU-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—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
-
- 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
- B01J20/12—Naturally occurring clays or bleaching earth
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2101/20—Heavy metals or heavy metal compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Dispersion Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Water Treatment By Sorption (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention discloses a kind for the treatment of process of lead waste water comprising waste water filtering, adjusting pH value, modified montmorillonite used heavy metal absorbent absorption, secondary filter and examination of wastewater discharge and etc.；Waste water treatment process containing heavy metal lead in the present invention is simple, excellent effect, waste water after processing can reach discharge standard, the modified montmorillonite used heavy metal absorbent manufacture craft used is simple and easy, the modified montmorillonite used heavy metal absorbent used may be reused after having handled waste water through simple process.
Description
Technical field
The present invention relates to technical field of waste water processing, more particularly, to a kind for the treatment of process of lead waste water.
Background technique
Lead is often used as raw material applied to manufacturing industry such as battery, plating, pigment, rubber, pesticide, fuel.Stereotype production
Acid waste water (pH=3) the lead concentration highest discharged in technique, the waste water lead concentration that electroplating effluent generates are also very high.Lead is nature
Boundary is distributed one of the element being often used in very wide element and industry.Lead and soluble lead salt are all toxic, lead waste water pair
Human health and animal and plant growth have serious harm.If every daily ingestion lead amount is more than 0.3-1.0mg, so that it may in human body inner product
It is tired, cause anaemia, neuritis etc..With the rapid development of industrial technology, the heavy metal lead in industrial wastewater is as a kind of pollution
Object, the discharge standard of clear stipulaties lead waste water is that lead always contains 1mg/L in national emission standard.Lead waste water comes from various batteries
Workshop, dressing plant, petrochemical plant etc., battery industry are the main sources of lead waste water；It is reported that 1 battery of every production
Lead loss 4.54-6810mg is resulted in, followed by petroleum industry produces gasoline additive.Although lead is common not as good as copper, cadmium,
But it is the common ingredients in waste water.Especially Battery Plant generates a large amount of lead waste water in process of production, and Pb In Exhausted Water contains
Amount exceeds hundred times of national standard, constitutes very big threat to underground water source, if arbitrarily discharged without processing, necessarily gives environment
Great harm is brought with society.
In existing lead containing wastewater treatment technology, ion-exchange, the precipitation method, absorption method and electrolysis method be using it is more,
More mature robust techniques.But there is also numerous deficiencies, such as electrolysis method, although the effect of removal heavy metal lead ion is also
Well, but during processing, can consume a large amount of electric energy in the treatment process of especially a large amount of waste water, energy consumption compared with
Greatly, it is difficult to meet the requirement for the energy-saving and emission-reduction advocated at present；The precipitation method, the precipitation method are commonly divided into chemical precipitation and physics again
Precipitating, chemical precipitation are exactly that a large amount of alkali is added into waste water, make waste water in alkalinity, then generate the sediment of indissoluble, pass through
It filters out, physical method is that flocculant is added into heavy metal-containing waste water, and flocculant is mostly colloid, largely similar using its surface
Then charge adsorption heavy metal ion removes after gravitational settling through the methods of filtering；Ion-exchange and absorption method, although behaviour
Make simply, energy consumption is small, but there is also problems ineffective when single method processing.
Summary of the invention
To solve the above problems, the present invention provides one kind, low energy consumption, and treatment process is simple and easy, to the place of heavy metal lead
Reason works well, the lead containing wastewater treatment technique that the inorganic agent after handling waste water can be recycled.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind for the treatment of process of lead waste water, comprising the following steps:
One, waste water filtering；
Two, the pH value of waste water is adjusted to 6~7.5；
Three, 40~50kg/m is pressed3Additive amount adds modified montmorillonite used heavy metal absorbent, and Air Exposure 20 into waste water
~60 hours；
Four, the modified montmorillonite used heavy metal absorbent after being filtered to remove absorption heavy metal lead；
Five, treated, and waste water is discharged after the assay was approved.
Although main pollutant is heavy metal lead ion therein in lead waste water, inevitably had substantially in waste water
Long-pending solid waste needs to remove, to prevent generating adverse effect to heavy metal lead treatment process later；Heavy metal lead is in acid
Solubility highest in property environment, the weakly acidic pH environment that the pH value of waste water is adjusted to 6~7.5 before treatment can be in certain journey
The content of the heavy metal lead in waste water is reduced on degree, while inexcessive adjusting pH makes waste water in alkalinity or strong basicity, in this way may be used
To reduce the investment of aqueous slkali, the step of adjusting pH value again after wastewater treatment can also be reduced, simplifies technique；It is modified montmorillonite used
When heavy metal absorbent processing, Air Exposure makes heavy metal absorbent and waste water one is be stirred effect using air-flow
Contact increases, and two being to be passed through a large amount of oxygen thereto, can pass through some high oxygen demand pollutions in reaction removal waste water
Object.
Preferably, modified montmorillonite used heavy metal absorbent is made by following steps:
A) Montmorillonite Purification prepares montmorillonite dispersion liquid by solid-liquid mass ratio after purification for 1:2~5；
B) addition hydroxy Al solion in the montmorillonite dispersion liquid prepared into step a, ultrasonic disperse 10~30 minutes
Afterwards, solution is dry, intercalation modifying montmorillonite is made；Wherein the mass ratio of montmorillonite dispersion liquid and hydroxy Al solion is 1:
3~7；
C) intercalation modifying montmorillonite made from step b is roasted 1~1.5 hour at 300~450 DEG C；
D) in the sodium chloride solution that the intercalation modifying montmorillonite after step c roasting is added to 6mol/L, ultrasonic treatment
15~20 minutes, and modified montmorillonite used heavy metal absorbent is made after drying.
Montmorillonite is a kind of aluminium silicate mineral of stratiform, and interlayer has an exchangeable cations abundant, and due to
Its interlayer structure having has certain absorption property, but since its interlamellar spacing is in 1nm or so, since its interlayer can be handed over
The presence of ion is changed, the heavy metal ion that can be adsorbed is limited, needs to be modified it processing；Hydroxyl aluminium ion be it is a kind of with
Aluminium ion is center ion, and numerous hydroxyls electrically surround the large-scale polymerization plasma group of aluminium ion formation due to ion band, can be with
Stable presence in aqueous solution has abnormal excellent ion exchange since its outer layer has a large amount of hydroxyl to surround
Performance, and the size of this kind of polymerization plasma group is suitable, it is close with the interlamellar spacing of montmorillonite, montmorillonite can be entered after processing
Interlayer, and the montmorillonite of stratiform is strutted into certain distance, increases the interlamellar spacing of montmorillonite, pillared work is played between montmorillonite layer
With, so that the absorption property of montmorillonite is become more excellent, can have more excellent absorption property, can also expand its absorption
Adsorbate type；After high-temperature roasting, hydroxyl therein can remove, the hydroxyl aluminium ion of interlayer is made to become nano aluminium oxide, it will
Montmorillonite interlayer structure struts, and expands interlamellar spacing.
Preferably, adjusting pH value using the acetic acid of 1mol/L and the potassium acetate of 1mol/L in step 2.
Preferably, then the Montmorillonite Purification processing in step a exists for montmorillonite is first ground to 400 mesh to 600 mesh
Impregnate 20~30 minutes in 75% ethanol solution, impregnated 10~15 minutes in the hydrochloric acid that pH is 4.5~5 later, finally spend from
Sub- water is dry after cleaning 1~3 time.
Montmorillonite Purification treatment process is successively impregnated in ethyl alcohol and hydrochloric acid, and having for montmorillonite surface attachment can be removed
Machine object and impurity, especially HCl treatment can remove the inorganic impurity for being filled in montmorillonite duct and interlayer, be that it has more
More adsorption spaces has stronger adsorption capacity.
Preferably, hydroxy Al solion is made by following methods: 0.003~0.03mol/L aluminium chloride is added to pH
It is made for 7.5~8.5 sodium hydroxide solution, wherein control hydroxide ion and aluminum ions molar ratio are 1.8~2.5:1.
Preferably, modified montmorillonite used heavy metal absorbent can be in the chlorination of 5~7mol/L after adsorbing heavy metal lead
Recycling is re-used for processing lead waste water after being ultrasonically treated 0.5~2.5 hour in sodium solution.
Preferably, heating rate when control intercalation modifying montmorillonite roasts is 1~5 DEG C/min, roasting in step c
Temperature fall afterwards.
Slow heating rate can make the alumina crystal of modified montmorillonite used interlayer more complete.
Preferably, hydroxy Al solion is during the preparation process, liquor alumini chloridi is at the uniform velocity added in 18~24 minutes
Into sodium hydroxide solution, and controlling temperature when addition is 70~90 DEG C.
Preferably, hydroxy Al solion is during the preparation process, liquor alumini chloridi was at the uniform velocity added to hydrogen in 20 minutes
In sodium hydroxide solution, and controlling temperature when addition is 90 DEG C.
Although hydroxyl aluminium ion is a kind of polymerizing cationically group that can be stabilized, but during the preparation process if added
The rate added it is excessively slow or it is too fast can all influence the aluminum ions formation of hydroxyl, also will affect and be formed by the aluminum ions stabilization of hydroxyl
Property.
Therefore, the invention has the following advantages:
(1) waste water treatment process containing heavy metal lead in the present invention is simple, and excellent effect, waste water after processing can reach
To discharge standard；
(2) modified montmorillonite used heavy metal absorbent manufacture craft employed in the present invention is simple and easy；
(3) modified montmorillonite used heavy metal absorbent employed in the present invention, can through simple process after having handled waste water
To reuse.
Specific embodiment
Further description of the technical solution of the present invention With reference to embodiment.
Embodiment 1
A kind for the treatment of process of lead waste water, comprising the following steps:
One, waste water filtering；
Two, the pH value of waste water is adjusted to 7；
Three, 45kg/m is pressed3Additive amount adds modified montmorillonite used heavy metal absorbent into waste water, and Air Exposure 40 is small
When；
Four, the modified montmorillonite used heavy metal absorbent after being filtered to remove absorption heavy metal lead；
Five, treated, and waste water is discharged after the assay was approved.
Wherein, modified montmorillonite used heavy metal absorbent is made by following steps:
A) montmorillonite is that 1:4 prepares montmorillonite dispersion liquid by solid-liquid mass ratio；
B) hydroxy Al solion is added in the montmorillonite dispersion liquid prepared into step a, ultrasonic disperse after twenty minutes, will
Solution is dry, and intercalation modifying montmorillonite is made；Wherein the mass ratio of montmorillonite dispersion liquid and hydroxy Al solion is 1:5；Hydroxyl
Base aluminium ion solution is made by following methods: 0.01mol/L aluminium chloride is added to the sodium hydroxide solution that pH is 8 and is made, wherein
It controls hydroxide ion and aluminum ions molar ratio is 2.1:1；
C) intercalation modifying montmorillonite made from step b is roasted 1.3 hours at 370 DEG C；
D) in the sodium chloride solution that the intercalation modifying montmorillonite after step c roasting is added to 6mol/L, ultrasonic treatment
17 minutes, and modified montmorillonite used heavy metal absorbent is made after drying.
Embodiment 2
A kind for the treatment of process of lead waste water, comprising the following steps:
One, waste water filtering；
Two, the pH value of waste water is adjusted to 7；
Three, 45kg/m is pressed3Additive amount adds modified montmorillonite used heavy metal absorbent into waste water, and Air Exposure 40 is small
When；
Four, the modified montmorillonite used heavy metal absorbent after being filtered to remove absorption heavy metal lead；
Five, treated, and waste water is discharged after the assay was approved；
Six, modified montmorillonite used heavy metal absorbent can surpass after adsorbing heavy metal lead in the sodium chloride solution of 6mol/L
Recycling is re-used for processing lead waste water after sonication 1.5 hours.
Wherein, modified montmorillonite used heavy metal absorbent is made by following steps:
A) Montmorillonite Purification prepares montmorillonite dispersion liquid by solid-liquid mass ratio after purification for 1:4；Montmorillonite Purification is handled
Montmorillonite is first ground to 500, is then impregnated in 75% ethanol solution 25 minutes, impregnates 13 in the hydrochloric acid that pH is 4.7 later
Minute, it is dry after finally cleaning 2 times with deionized water；
B) hydroxy Al solion is added in the montmorillonite dispersion liquid prepared into step a, ultrasonic disperse after twenty minutes, will
Solution is dry, and intercalation modifying montmorillonite is made；Wherein the mass ratio of montmorillonite dispersion liquid and hydroxy Al solion is 1:5；Hydroxyl
Base aluminium ion solution is made by following methods: 0.01mol/L aluminium chloride is added to the sodium hydroxide solution that pH is 8 and is made, wherein
It controls hydroxide ion and aluminum ions molar ratio is 2.1:1；
C) intercalation modifying montmorillonite made from step b is roasted 1.3 hours at 300~450 DEG C；
D) in the sodium chloride solution that the intercalation modifying montmorillonite after step c roasting is added to 6mol/L, ultrasonic treatment
17 minutes, and modified montmorillonite used heavy metal absorbent is made after drying.
Embodiment 3
A kind for the treatment of process of lead waste water, comprising the following steps:
One, waste water filtering；
Two, using the potassium acetate of the acetic acid of 1mol/L and 1mol/L, the pH value of waste water is adjusted to 6；
Three, 40kg/m is pressed3Additive amount adds modified montmorillonite used heavy metal absorbent into waste water, and Air Exposure 20 is small
When；
Four, the modified montmorillonite used heavy metal absorbent after being filtered to remove absorption heavy metal lead；
Five, treated, and waste water is discharged after the assay was approved；
Six, modified montmorillonite used heavy metal absorbent can surpass after adsorbing heavy metal lead in the sodium chloride solution of 5mol/L
Recycling is re-used for processing lead waste water after sonication 0.5 hour.
Wherein, modified montmorillonite used heavy metal absorbent is made by following steps:
A) Montmorillonite Purification prepares montmorillonite dispersion liquid by solid-liquid mass ratio after purification for 1:2；Montmorillonite Purification is handled
Montmorillonite is first ground to 400 mesh, then impregnates in 75% ethanol solution 20 minutes, is impregnated in the hydrochloric acid that pH is 4.5 later
It is 10 minutes, dry after finally cleaning 1 time with deionized water；
B) hydroxy Al solion is added in the montmorillonite dispersion liquid prepared into step a, ultrasonic disperse after ten minutes, will
Solution is dry, obtained intercalation modifying montmorillonite, and the mass ratio of montmorillonite dispersion liquid and hydroxy Al solion is 1:3；Wherein, hydroxyl
Base aluminium ion solution is made by following methods: 0.003mol/L aluminium chloride is added to the sodium hydroxide solution that pH is 7.5 and is made,
Middle control hydroxide ion and aluminum ions molar ratio are 1.8:1, hydroxy Al solion during the preparation process, liquor alumini chloridi
It is at the uniform velocity added in sodium hydroxide solution in 18 minutes, and controlling temperature when addition is 70 DEG C；
C) intercalation modifying montmorillonite made from step b is roasted 1 hour at 300 DEG C；Control the roasting of intercalation modifying montmorillonite
The heating rate of burning is 1 DEG C/min, Temperature fall after roasting；
D) in the sodium chloride solution that the intercalation modifying montmorillonite after step c roasting is added to 6mol/L, ultrasonic treatment
15 minutes, and modified montmorillonite used heavy metal absorbent is made after drying.
Embodiment 4
A kind for the treatment of process of lead waste water, comprising the following steps:
One, waste water filtering；
Two, using the potassium acetate of the acetic acid of 1mol/L and 1mol/L, the pH value of waste water is adjusted to 7；
Three, 45kg/m is pressed3Additive amount adds modified montmorillonite used heavy metal absorbent into waste water, and Air Exposure 40 is small
When；
Four, the modified montmorillonite used heavy metal absorbent after being filtered to remove absorption heavy metal lead；
Five, treated, and waste water is discharged after the assay was approved；
Six, modified montmorillonite used heavy metal absorbent can surpass after adsorbing heavy metal lead in the sodium chloride solution of 6mol/L
Recycling is re-used for processing lead waste water after sonication 1.5 hours.
Wherein, modified montmorillonite used heavy metal absorbent is made by following steps:
A) Montmorillonite Purification prepares montmorillonite dispersion liquid by solid-liquid mass ratio after purification for 1:4；Montmorillonite Purification is handled
Montmorillonite is first ground to 500 mesh, then impregnates in 75% ethanol solution 25 minutes, is impregnated in the hydrochloric acid that pH is 4.7 later
It is 12 minutes, dry after finally cleaning 2 times with deionized water；
B) hydroxy Al solion is added in the montmorillonite dispersion liquid prepared into step a, ultrasonic disperse after twenty minutes, will
Solution is dry, obtained intercalation modifying montmorillonite, and the mass ratio of montmorillonite dispersion liquid and hydroxy Al solion is 1:5；Wherein, hydroxyl
Base aluminium ion solution is made by following methods: 0.01mol/L aluminium chloride is added to the sodium hydroxide solution that pH is 8 and is made, wherein
Controlling hydroxide ion and aluminum ions molar ratio is 2.1:1, and during the preparation process, liquor alumini chloridi exists hydroxy Al solion
It is at the uniform velocity added in sodium hydroxide solution in 21 minutes, and controlling temperature when addition is 80 DEG C；
C) intercalation modifying montmorillonite made from step b is roasted 1.3 hours at 370 DEG C；Control intercalation modifying montmorillonite
The heating rate of roasting is 3 DEG C/min, Temperature fall after roasting；
D) in the sodium chloride solution that the intercalation modifying montmorillonite after step c roasting is added to 6mol/L, ultrasonic treatment
17 minutes, and modified montmorillonite used heavy metal absorbent is made after drying.
Embodiment 5
A kind for the treatment of process of lead waste water, comprising the following steps:
One, waste water filtering；
Two, using the potassium acetate of the acetic acid of 1mol/L and 1mol/L, the pH value of waste water is adjusted to 7.5；
Three, 50kg/m is pressed3Additive amount adds modified montmorillonite used heavy metal absorbent into waste water, and Air Exposure 60 is small
When；
Four, the modified montmorillonite used heavy metal absorbent after being filtered to remove absorption heavy metal lead；
Five, treated, and waste water is discharged after the assay was approved；
Six, modified montmorillonite used heavy metal absorbent can surpass after adsorbing heavy metal lead in the sodium chloride solution of 7mol/L
Recycling is re-used for processing lead waste water after sonication 2.5 hours.
Wherein, modified montmorillonite used heavy metal absorbent is made by following steps:
A) Montmorillonite Purification prepares montmorillonite dispersion liquid by solid-liquid mass ratio after purification for 1:5；Montmorillonite Purification is handled
Montmorillonite is first ground to 600 mesh, is then impregnated in 75% ethanol solution 30 minutes, impregnates 15 in the hydrochloric acid that pH is 5 later
Minute, it is dry after finally cleaning 3 times with deionized water；
B) hydroxy Al solion is added in the montmorillonite dispersion liquid prepared into step a, it, will after ultrasonic disperse 30 minutes
Solution is dry, obtained intercalation modifying montmorillonite, and the mass ratio of montmorillonite dispersion liquid and hydroxy Al solion is 1:7；Wherein, hydroxyl
Base aluminium ion solution is made by following methods: 0.03mol/L aluminium chloride is added to the sodium hydroxide solution that pH is 8.5 and is made,
Middle control hydroxide ion and aluminum ions molar ratio are 2.5:1, hydroxy Al solion during the preparation process, liquor alumini chloridi
It is at the uniform velocity added in sodium hydroxide solution in 24 minutes, and controlling temperature when addition is 90 DEG C；
C) intercalation modifying montmorillonite made from step b is roasted 1.5 hours at 450 DEG C；Control intercalation modifying montmorillonite
The heating rate of roasting is 5 DEG C/min, Temperature fall after roasting；
D) in the sodium chloride solution that the intercalation modifying montmorillonite after step c roasting is added to 6mol/L, ultrasonic treatment
20 minutes, and modified montmorillonite used heavy metal absorbent is made after drying.
Following technical indicator may be implemented through the invention:
Through lead content≤0.1mg/L in treated the lead waste water of the treatment process in the present invention.
Claims (6)
1. a kind for the treatment of process of lead waste water, it is characterised in that the following steps are included:
One, waste water filtering；
Two, the pH value of waste water is adjusted to 6~7.5；
Three, 40~50kg/m is pressed3Additive amount adds modified montmorillonite used heavy metal absorbent, and Air Exposure 20~60 into waste water
Hour；
Four, the modified montmorillonite used heavy metal absorbent after being filtered to remove absorption heavy metal lead；
Five, treated, and waste water is discharged after the assay was approved；
The modified montmorillonite used heavy metal absorbent is made by following steps:
A) Montmorillonite Purification prepares montmorillonite dispersion liquid by solid-liquid mass ratio after purification for 1:2~5；
B) hydroxy Al solion is added in the montmorillonite dispersion liquid prepared into step a, it, will after ultrasonic disperse 10~30 minutes
Solution is dry, and intercalation modifying montmorillonite is made；Wherein the mass ratio of montmorillonite dispersion liquid and hydroxy Al solion is 1:3~7；
C) intercalation modifying montmorillonite made from step b is roasted 1~1.5 hour at 300~450 DEG C；
D) in the sodium chloride solution that the intercalation modifying montmorillonite after step c roasting is added to 6mol/L, ultrasonic treatment 15~
20 minutes, and modified montmorillonite used heavy metal absorbent is made after drying；
The hydroxy Al solion is made by following methods: 0.003~0.03mol/L aluminium chloride be added to pH be 7.5~
8.5 sodium hydroxide solution is made, wherein control hydroxide ion and aluminum ions molar ratio are 1.8~2.5:1；
During the preparation process, liquor alumini chloridi was at the uniform velocity added to sodium hydroxide in 18~24 minutes to the hydroxy Al solion
In solution, and controlling temperature when addition is 70~90 DEG C.
2. a kind for the treatment of process of lead waste water according to claim 1, it is characterised in that: used in the step 2
The acetic acid of 1mol/L and the potassium acetate of 1mol/L adjust pH value.
3. a kind for the treatment of process of lead waste water according to claim 1, it is characterised in that: the illiteracy in the step a is de-
Stone purification processes are that montmorillonite is first ground to 400 mesh to 600 mesh, are then impregnated 20~30 minutes in 75% ethanol solution, it
It is impregnated 10~15 minutes in the hydrochloric acid that pH is 4.5~5 afterwards, it is dry after finally cleaning 1~3 time with deionized water.
4. a kind for the treatment of process of lead waste water according to claim 1, it is characterised in that: described is modified montmorillonite used heavy
Metal absorbent recycles after being ultrasonically treated 0.5~2.5 hour in the sodium chloride solution of 5~7mol/L after adsorbing heavy metal lead
It is re-used for processing lead waste water.
5. a kind for the treatment of process of lead waste water according to claim 1, it is characterised in that: in the step c, control is inserted
Heating rate when the modified montmorillonite used roasting of layer is 1~5 DEG C/min, Temperature fall after roasting.
6. a kind for the treatment of process of lead waste water according to claim 1, it is characterised in that: the hydroxy Al solion
During the preparation process, liquor alumini chloridi is at the uniform velocity added in sodium hydroxide solution in 20 minutes, and controls temperature when addition
It is 90 DEG C.
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Application publication date: 20160921 Assignee: Zhoushan Huazheng Material Technology Co.,Ltd. Assignor: Zhejiang Ocean University Contract record no.: X2023980046527 Denomination of invention: A Treatment Process for Lead Containing Wastewater Granted publication date: 20190326 License type: Common License Record date: 20231109 |
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