CN106365278A - Water body heavy metal removal technique - Google Patents
Water body heavy metal removal technique Download PDFInfo
- Publication number
- CN106365278A CN106365278A CN201610790294.1A CN201610790294A CN106365278A CN 106365278 A CN106365278 A CN 106365278A CN 201610790294 A CN201610790294 A CN 201610790294A CN 106365278 A CN106365278 A CN 106365278A
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- Prior art keywords
- water
- heavy metal
- flocculant
- bagasse
- technique
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Classifications
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5272—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using specific organic precipitants
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention provides a water body heavy metal removal technique. The fine sand precipitation+activated carbon+activated carbon three-stage filtration mode is adopted for filtration, so the technique has the advantages of high filtration efficiency and favorable effect. Compared with the traditional method, the technique has the advantages of energy saving and consumption reduction. By adopting the modified bagasse activated carbon, the raw material is environment-friendly and renewable, thereby changing wastes into valuable substances and being low in cost. The heavy-metal-attached fine sand can remove heavy metals from the natural water circulation when being used in the arbor planting substrate.
Description
Technical field
The present invention relates to water treatment field, especially, relate to a kind of heavy metal in water and remove technique.
Background technology
Along with developing rapidly of China's industry, thing followed problem of environmental pollution highlights day by day. Because heavy metal can onlyTransform migration and can not degrade, therefore its problem of environmental pollution is particularly outstanding. The removal method of heavy metal ion mainly contains at present:Physical, chemical method and bioanalysis, these methods respectively have pluses and minuses. Chemical method is that skill is processed in traditional and practical heavy metal pollutionArt, by add precipitating reagent in water body, makes heavy metal precipitated and remove. This method processing cost is low, convenient management, but due toNeed to add chemical agent, therefore easily cause secondary pollution. Bioanalysis strong adaptability, equipment simply, selectively good, but due to lifeThing needs domestication, and general treatment cycle is relatively long. Absorption method in Physical is because environmental pollution is little, be easy to realize a large amount of placesReason, therefore promise well in the processing of heavy metal wastewater thereby etc. At present, applying more adsorbent is mainly various Carbon Materials,As active carbon, charcoal fiber, CNT, Graphene etc., the preparation cost of these materials is higher, has limited to a certain extent itApplication aspect wastewater treatment. Remove technique therefore be necessary to research and develop a kind of heavy metal in water, reduce costs, improve heavy metalTreatment effect, and prevent secondary pollution.
Summary of the invention
The object of the invention is to provide, with technical solution problem.
For achieving the above object, the invention provides a kind of heavy metal in water and remove technique.
A kind of heavy metal in water is removed technique, comprises the following steps:
A, the water body that contains heavy metal is put into reaction vessel, under the mixing speed of 120rpm, add shitosan, alginic acidSodium and aluminium hydroxide; Stir 25-30min;
B, solution is precipitated by tube settler successively, fine sand is filled in inclined tube bottom;
C, flocculant is inputted to static tube mixer, the water in this static tube mixer fully mixes with flocculant;
D, with the mixed water of flocculant enter filter No. 1;
The water outlet of E, No. 1 filter enters tank, and its content of beary metal is detected, if the content of heavy metal meets rowWhen water requires, flow directly into clear water reserviors; If when the content of heavy metal does not meet drainage requirement, by water again by static tubular typeBlender also adds flocculant, is delivered to filter No. 2, then flows into clear water reserviors;
The fine sand of F, periodic replacement tube settler bottom, and the matrix of planting for arbor.
Preferably, No. 1 described and No. 2 filling-modified bagasse active carbons of filter.
Preferably, the preparation method of described using modified bagasse active carbon, comprises the following steps:
A, bagasse is dried, pulverizes, is sieved for subsequent use;
B, the aluminum chloride aqueous solution mass ratio that is 0.3-2.0% by bagasse and mass concentration are 1: (6-10) preparation mixed solution,Stir evenly, soak 24 hours;
C, dry pack; 600 DEG C of charings, obtain charing bagasse product;
D, send in Muffle furnace, and activate 60-80 minute under 700-1000 DEG C of condition; From Muffle furnace, take out, use immediately bodyVolume concentrations is 10% hydrochloric acid solution cleaning, and then extremely near neutral with ultra-pure water washing, when checking cleaning solution with liquor argenti nitratis ophthalmicusMiddle during without chlorion, washing finishes;
E, put into electric drying oven with forced convection dry 4-5h under 110 DEG C of conditions; Grind, cross 200 mesh sieves, obtain aluminum chloride modifiedBagasse active carbon.
Preferably, described flocculant is aluminium hydroxide.
Preferably, in described steps A, the addition of shitosan, sodium alginate and aluminium hydroxide is 80-120g/m respectively3，
20-50g/m3，20-50g/m3。
The present invention selects using modified bagasse active carbon to have the following advantages: the one, and without adopting aeration oxidation processes, energy-conservation fallingConsumption; The 2nd, bagasse itself is exactly a kind of agricultural wastes, although using modified bagasse active carbon is a kind of active carbon product of routineKind, be used widely, but the using modified bagasse active carbon in the present invention adopts aluminium salt to carry out modification, with flocculant hydrogenAluminium oxide cooperatively interacts and has better flocculating effect and filter effect; The 3rd, bagasse itself is exactly agricultural wastes, can notWater body is brought to new pollution.
The present invention adopts the mode tool of 3 grades of filtrations to have the following advantages: the one, and removing heavy metals efficiency is high, effective; The 2nd, onlyNeed to regularly replace fine sand, and active carbon in No. 1 and No. 2 filters can not change for a long time, save time and raw material; The 3rd,In the process that the active carbon in No. 1 filter is changed, without shut-down, still can use No. 2 filters just carrying outNormal work, raises the efficiency.
Matrix by fine sand for arbor plantation, heavy metal enters rhizome and the branches and leaves of arbor, can be by heavy metal from greatlyNaturally in water circulation, remove.
The present invention has following beneficial effect: heavy metal in water of the present invention is removed technique, adopts fine sand precipitation+active carbonThe mode of 3 grades of filtrations of+active carbon is filtered, and filter efficiency is high, effective, compares conventional method, energy-saving and cost-reducing; Adopt modificationBagasse active carbon, not only raw material environmental protection is renewable but also turn waste into wealth, and cost is low; By the fine sand that adheres to heavy metal for QiaoThe matrix of wood plantation can be removed heavy metal from the water circulation of the Nature.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.The present invention is further detailed explanation below.
Detailed description of the invention
Below embodiments of the invention are elaborated, but the present invention can limit and cover according to claimMultitude of different ways implement.
Embodiment 1
A kind of heavy metal in water is removed technique, comprises the following steps:
A, the water body that contains heavy metal is put into reaction vessel, under the mixing speed of 120rpm, add shitosan, alginic acidSodium and aluminium hydroxide; Stir 28min;
B, solution is precipitated by tube settler successively, fine sand is filled in inclined tube bottom;
C, flocculant is inputted to static tube mixer, the water in this static tube mixer fully mixes with flocculant;
D, with the mixed water of flocculant enter filter No. 1;
The water outlet of E, No. 1 filter enters tank, and its content of beary metal is detected, if the content of heavy metal meets rowWhen water requires, flow directly into clear water reserviors; If when the content of heavy metal does not meet drainage requirement, by water again by static tubular typeBlender also adds flocculant, is delivered to filter No. 2, then flows into clear water reserviors;
The fine sand of F, periodic replacement tube settler bottom, and the matrix of planting for arbor.
Described flocculant is aluminium hydroxide.
Described special active carbon is using modified bagasse active carbon.
The preparation method of described using modified bagasse active carbon, comprises the following steps:
A, bagasse is dried, pulverizes, is sieved for subsequent use;
B, the aluminum chloride aqueous solution mass ratio that is 1.0% by bagasse and mass concentration are 1: 8 preparation mixed solution, stir evenly, and soak24 hours;
C, dry pack; 600 DEG C of charings, obtain charing bagasse product;
D, send in Muffle furnace, and activate 70 minutes under 800 DEG C of conditions; From Muffle furnace, take out, by volumetric concentration be immediately10% hydrochloric acid solution cleans, and then with ultra-pure water washing near neutral, when with in liquor argenti nitratis ophthalmicus inspection cleaning solution without chlorine fromThe period of the day from 11 p.m. to 1 a.m, washing finishes;
E, put into electric drying oven with forced convection dry 4.5h under 110 DEG C of conditions; Grind, cross 200 mesh sieves, obtain aluminum chloride modifiedBagasse active carbon.
In described steps A, the addition of shitosan, sodium alginate and aluminium hydroxide is 100g/m respectively3，30g/m3，35g/
m3。
Embodiment 2
A kind of heavy metal in water is removed technique, comprises the following steps:
A, the water body that contains heavy metal is put into reaction vessel, under the mixing speed of 120rpm, add shitosan, alginic acidSodium and aluminium hydroxide; Stir 30min;
B, solution is precipitated by tube settler successively, fine sand is filled in inclined tube bottom;
C, flocculant is inputted to static tube mixer, the water in this static tube mixer fully mixes with flocculant;
D, with the mixed water of flocculant enter filter No. 1;
The water outlet of E, No. 1 filter enters tank, and its content of beary metal is detected, if the content of heavy metal meets rowWhen water requires, flow directly into clear water reserviors; If when the content of heavy metal does not meet drainage requirement, by water again by static tubular typeBlender also adds flocculant, is delivered to filter No. 2, then flows into clear water reserviors;
The fine sand of F, periodic replacement tube settler bottom, and the matrix of planting for arbor.
Described flocculant is aluminium hydroxide.
Described special active carbon is using modified bagasse active carbon.
The preparation method of described using modified bagasse active carbon, comprises the following steps:
A, bagasse is dried, pulverizes, is sieved for subsequent use;
B, the aluminum chloride aqueous solution mass ratio that is 0.3% by bagasse and mass concentration are 1: 10 preparation mixed solution, stir evenly, and soakSteep 24 hours;
C, dry pack; 600 DEG C of charings, obtain charing bagasse product;
D, send in Muffle furnace, and activate 80 minutes under 700 DEG C of conditions; From Muffle furnace, take out, by volumetric concentration be immediately10% hydrochloric acid solution cleans, and then with ultra-pure water washing near neutral, when with in liquor argenti nitratis ophthalmicus inspection cleaning solution without chlorine fromThe period of the day from 11 p.m. to 1 a.m, washing finishes;
E, put into electric drying oven with forced convection dry 4h under 110 DEG C of conditions; Grind, cross 200 mesh sieves, obtain aluminum chloride modified sweetBagasse active carbon.
In described steps A, the addition of shitosan, sodium alginate and aluminium hydroxide is 80g/m respectively3，50g/m3，50g/
m3。
Embodiment 3
A kind of heavy metal in water is removed technique, comprises the following steps:
A, the water body that contains heavy metal is put into reaction vessel, under the mixing speed of 120rpm, add shitosan, alginic acidSodium and aluminium hydroxide; Stir 25-30min;
B, solution is precipitated by tube settler successively, fine sand is filled in inclined tube bottom;
C, flocculant is inputted to static tube mixer, the water in this static tube mixer fully mixes with flocculant;
D, with the mixed water of flocculant enter filter No. 1;
The water outlet of E, No. 1 filter enters tank, and its content of beary metal is detected, if the content of heavy metal meets rowWhen water requires, flow directly into clear water reserviors; If when the content of heavy metal does not meet drainage requirement, by water again by static tubular typeBlender also adds flocculant, is delivered to filter No. 2, then flows into clear water reserviors;
The fine sand of F, periodic replacement tube settler bottom, and the matrix of planting for arbor.
Described flocculant is aluminium hydroxide.
Described special active carbon is using modified bagasse active carbon.
The preparation method of described using modified bagasse active carbon, comprises the following steps:
A, bagasse is dried, pulverizes, is sieved for subsequent use;
B, the aluminum chloride aqueous solution mass ratio that is 2.0% by bagasse and mass concentration are 1: 6 preparation mixed solution, stir evenly, and soak24 hours;
C, dry pack; 600 DEG C of charings, obtain charing bagasse product;
D, send in Muffle furnace, and activate 60 minutes under 1000 DEG C of conditions; From Muffle furnace, take out, by volumetric concentration be immediately10% hydrochloric acid solution cleans, and then with ultra-pure water washing near neutral, when with in liquor argenti nitratis ophthalmicus inspection cleaning solution without chlorine fromThe period of the day from 11 p.m. to 1 a.m, washing finishes;
E, put into electric drying oven with forced convection dry 5h under 110 DEG C of conditions; Grind, cross 200 mesh sieves, obtain aluminum chloride modified sweetBagasse active carbon.
In described steps A, the addition of shitosan, sodium alginate and aluminium hydroxide is 120g/m respectively3，20g/m3，20g/
m3。
Taking the water treatment technology of embodiment 1 as processing scheme, respectively the water of three kinds of different content of beary metal is carried out belowProcess, detected as follows data:
Table 1: in water, heavy metal detects data
ND representative does not detect.
Can be known by above test data, water treatment technology of the present invention, treatment effect is very good.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this areaArt personnel, the present invention can have various modifications and variations. Within the spirit and principles in the present invention all, to do any repairingProtection scope of the present invention changes, be equal to replacement, improvement etc., within all should be included in.
Claims (5)
1. heavy metal in water is removed a technique, it is characterized in that, comprises the following steps:
A, the water body that contains heavy metal is put into reaction vessel, under the mixing speed of 120rpm, add shitosan, alginic acidSodium and aluminium hydroxide; Stir 25-30min;
B, solution is precipitated by tube settler successively, fine sand is filled in inclined tube bottom;
C, flocculant is inputted to static tube mixer, the water in this static tube mixer fully mixes with flocculant;
D, with the mixed water of flocculant enter filter No. 1;
The water outlet of E, No. 1 filter enters tank, and its content of beary metal is detected, if the content of heavy metal meets rowWhen water requires, flow directly into clear water reserviors; If when the content of heavy metal does not meet drainage requirement, by water again by static tubular typeBlender also adds flocculant, is delivered to filter No. 2, then flows into clear water reserviors;
The fine sand of F, periodic replacement tube settler bottom, and the matrix of planting for arbor.
2. heavy metal in water as claimed in claim 1 is removed technique, it is characterized in that, described No. 1 and No. 2 filters fillingsUsing modified bagasse active carbon.
3. heavy metal in water as claimed in claim 2 is removed technique, it is characterized in that, described using modified bagasse active carbonPreparation method, comprises the following steps:
A, bagasse is dried, pulverizes, is sieved for subsequent use;
B, the aluminum chloride aqueous solution mass ratio that is 0.3-2.0% by bagasse and mass concentration are 1: (6-10) preparation mixed solution,Stir evenly, soak 24 hours;
C, dry pack; 600 DEG C of charings, obtain charing bagasse product;
D, send in Muffle furnace, and activate 60-80 minute under 700-1000 DEG C of condition; From Muffle furnace, take out, use immediately bodyVolume concentrations is 10% hydrochloric acid solution cleaning, and then extremely near neutral with ultra-pure water washing, when checking cleaning solution with liquor argenti nitratis ophthalmicusMiddle during without chlorion, washing finishes;
E, put into electric drying oven with forced convection dry 4-5h under 110 DEG C of conditions; Grind, cross 200 mesh sieves, obtain aluminum chloride modifiedBagasse active carbon.
4. heavy metal in water as claimed in claim 1 is removed technique, it is characterized in that, described flocculant is aluminium hydroxide.
5. heavy metal in water as claimed in claim 1 is removed technique, it is characterized in that, and in described steps A, shitosan, seaThe addition of mosanom and aluminium hydroxide is respectively 80-120g/m3，20-50g/m3，20-50g/m3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610790294.1A CN106365278A (en) | 2016-08-31 | 2016-08-31 | Water body heavy metal removal technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610790294.1A CN106365278A (en) | 2016-08-31 | 2016-08-31 | Water body heavy metal removal technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106365278A true CN106365278A (en) | 2017-02-01 |
Family
ID=57898774
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610790294.1A Pending CN106365278A (en) | 2016-08-31 | 2016-08-31 | Water body heavy metal removal technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064356A (en) * | 2019-06-05 | 2019-07-30 | 陈目哲 | It is a kind of remove heavy metal ions in wastewater mixture and its application |
| CN114632494A (en) * | 2022-04-08 | 2022-06-17 | 中山大学 | Preparation method of bagasse biochar |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102000545A (en) * | 2010-10-21 | 2011-04-06 | 桂林理工大学 | Preparation method of aluminum chloride modified bagasse active carbon |
| CN202688113U (en) * | 2012-06-29 | 2013-01-23 | 倪新军 | Recycling device for high frequency circuit board electroplating wastewater chemical treatment water |
| CN104174641A (en) * | 2014-08-19 | 2014-12-03 | 四川达沃斯生态环保科技有限公司 | Heavy metal contaminated soil remediation device and isolated remediation method |
| CN105461139A (en) * | 2015-12-31 | 2016-04-06 | 上海丰信环保科技有限公司 | Zero discharging process for nickeliferous heavy metal wastewater |
| CN105776672A (en) * | 2016-05-12 | 2016-07-20 | 东莞市联洲知识产权运营管理有限公司 | High-efficiency and energy-saving wastewater treatment technology |
-
2016
- 2016-08-31 CN CN201610790294.1A patent/CN106365278A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102000545A (en) * | 2010-10-21 | 2011-04-06 | 桂林理工大学 | Preparation method of aluminum chloride modified bagasse active carbon |
| CN202688113U (en) * | 2012-06-29 | 2013-01-23 | 倪新军 | Recycling device for high frequency circuit board electroplating wastewater chemical treatment water |
| CN104174641A (en) * | 2014-08-19 | 2014-12-03 | 四川达沃斯生态环保科技有限公司 | Heavy metal contaminated soil remediation device and isolated remediation method |
| CN105461139A (en) * | 2015-12-31 | 2016-04-06 | 上海丰信环保科技有限公司 | Zero discharging process for nickeliferous heavy metal wastewater |
| CN105776672A (en) * | 2016-05-12 | 2016-07-20 | 东莞市联洲知识产权运营管理有限公司 | High-efficiency and energy-saving wastewater treatment technology |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064356A (en) * | 2019-06-05 | 2019-07-30 | 陈目哲 | It is a kind of remove heavy metal ions in wastewater mixture and its application |
| CN114632494A (en) * | 2022-04-08 | 2022-06-17 | 中山大学 | Preparation method of bagasse biochar |
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