CN108128927A - A kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand - Google Patents
A kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand Download PDFInfo
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- CN108128927A CN108128927A CN201711458314.6A CN201711458314A CN108128927A CN 108128927 A CN108128927 A CN 108128927A CN 201711458314 A CN201711458314 A CN 201711458314A CN 108128927 A CN108128927 A CN 108128927A
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- sulphite
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- manganese sand
- lead ion
- removal
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
It is a kind of using sulphite strengthen manganese sand go water removal in lead ion method, be related to method for treating water, solve the problems, such as it is existing except lead technology there are lead ion removal efficiency it is low, using it is inconvenient for operation, be difficult carry out large-scale application.The method for treating water of the present invention：Sulphite is added in containing lead water, the filter bed equipped with manganese sand is introduced the water into and is filtered, sulphite is potentiometric titrations by oxygen Quick Oxidation, then, potentiometric titrations are rapidly by Pb under the catalytic action of manganese sand2+It is oxidized to PbO2Particle is trapped into manganese sand surface, that is, completes Pb2+Removal.Advantages of the present invention：Sulfite chemical property is stablized, and transport, storage are convenient, cheap, easy to operate, do not need to additionally increase equipment, large-scale application can be carried out in water factory, manganese sand oxygen catalytic oxidation sulphite generation potentiometric titrations speed is fast, can be rapidly by Pb2+It is oxidized to PbO2Particle, Pb2+Removal efficiency is high.
Description
Technical field
The present invention relates to drinking water treatment field more particularly to a kind of methods for removing Pb in Drinking Water ion.
Background technology
Lead (Pb) have the characteristics that fusing point is low, density is high, it is anticorrosive, be easy to be machined and be widely used in national warp
Help every field, such as rubber production, storage battery production, cable.It is a large amount of and widely using lead is caused to discharge in a variety of manners
Into environment, water body, soil and atmosphere pollution are caused.The toxicity of lead is very big, can enter people through skin, alimentary canal, respiratory tract etc.
Body is accumulated in human body, is distributed mainly in liver,kidney,spleen, courage, brain, especially with the concentration highest in liver, kidney.Lead can strong inhibition
The activation of ATP enzyme, leads to the lead poisoning of nervous system, lead poisoning can coup injury humans and animals thyroid function, reduce and hang down
The secretion of body hormone and adrenocortical function can also damage reproduction cell and reduce sexual function.And children do harm to lead poisoning and make
Sensibility is higher than adult, and since the brain development of children is not perfect, facial pallor is easily accumulated in children's brain, is caused
Virgin central nervous system disorder.Such as, in August, 2009, the children blood lead of Shaanxi Province Fengxiang County 615 is exceeded, wherein 166 Genus Homos are in
Degree, severe lead poisoning, need to carry out lead discharging treatment in hospital, mainly since the lead of 100,000 tons of annual output has been built up in Fengxiang County town green for a long time
Caused by the coking project of 700,000 tons of zinc abstraction project and annual output leads to environmental pollution.In March, 2012, Shaoguan City of Guangdong Province Renhua
The reason of it is exceeded that county Dong Tang towns have 37 less than 14 years old children to be found blood lead, and blood lead is exceeded, with neighbouring Dan Xia smelteries
It is related.For these reasons, certain limitation has been done to concentration preceding in Drinking Water by China,《Standards for drinking water quality》
(GB5749-2006) limit value of regulation lead is 10 μ g/L in.
At present, the method for removing lead ion in water removal mainly has absorption method, ion-exchange etc., and most study is absorption
Method carries out various forms of modifications, to realize the removal to lead ion in water using different types of adsorbent and to adsorbent.
Patent CN102172510A discloses MnO2/Fe3O4The preparation method of compound adsorbent and its method for removing lead in water removal, pass through
Coprecipitation is by MnO2Load to Fe3O4Upper acquisition MnO2/Fe3O4Compound adsorbent adsorbs lead ion.Patent
The two step hydrothermal preparing process and its Pb in Adsorption water that CN103071446A discloses magnetic titanic acid sodium nanotube2+Should
With, by two one-step hydrothermals prepare it is a kind of load ferrous acid bore magnetic titanic acid sodium nanotube, lead ion in water is adsorbed.Specially
Sharp CN101891289A discloses a kind of effective ways for removing lead in source water, and Gao Meng is added into the leaded raw water of flocculation basin
Sour potassium and manganese sulfate enter inclined-tube sedimentation tank after flocculation, water is through filter after sinking.Patent CN106587288A discloses one kind
Electro Sorb go water removal in lead ion method, by the use of souring activity Carbon fibe as electrode material Electro Sorb go remove water in lead from
Son.
In conclusion go the method for lead ion in water removal there are lead ion Adsorption efficiency is low, adsorbent prepare it is complicated,
It is inconvenient to use, it is difficult to the shortcomings that carrying out large-scale application.
Invention content
The purpose of the present invention is to solve the existing method for removing lead ion in water removal there are lead ion removal efficiency is low, make
With it is inconvenient for operation, be difficult and to provide and a kind of strengthen the removal of manganese sand using single persulfate the problem of carrying out large-scale application
The method of lead ion in water.
A kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand of the present invention, through the following steps that real
Existing：
First, sulphite is added in into accessing pending water, control sulfite concentration is 2~100mg/L；
2nd, the accessing pending water containing sulphite is introduced into the filter bed equipped with manganese sand, after being filtered processing, that is, completed
The method for removing lead ion in water removal using sulphite reinforcing manganese sand.
The accessing pending water is underground water, and surface water is discharged after coagulation, precipitation process, and flow is shown in Fig. 1.
The present invention it is a kind of using sulphite strengthen manganese sand go water removal in lead ion method described in sulphite for Asia
Sodium sulphate (Na2SO3), potassium sulfite (K2SO3), calcium sulfite (CaSO3), sodium hydrogensulfite (NaHSO3), potassium bisulfite
(KHSO3) one or more of mixture.
A kind of principle that the method for lead ion in water removal is gone using sulphite reinforcing manganese sand of the present invention：Water sulfite salt
(SO3 2-) under the catalytic action of manganese sand, by oxygen (O2) rapid oxidation be potentiometric titrations (SO4 ·-), see reaction equation (1) extremely
(3), then, the potentiometric titrations of generation can be rapidly by lead ion (Pb of the absorption on manganese sand surface2+) it is oxidized to titanium dioxide
Lead (PbO2) particle, see reaction equation (4), the PbO of generation2Particle is trapped manganese sand surface, reaches Pb in water removal2+Mesh
's.Strengthening manganese sand using sulphite goes the reaction mechanism of lead ion in water removal to see Fig. 2.
A kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand of the present invention has the following advantages：
(1) sulfite chemical property is stablized, and transport, storage are convenient, cheap, are commercially easy to get；
(2) sulphite drinks water reducing agent catalogue by national be formally included in, easy to operate, does not need to additionally increase
Oil (gas) filling device does not change the original treatment process of water factory, can carry out large-scale application；
(3) it is fast to generate potentiometric titrations speed for manganese sand oxygen catalytic oxidation sulphite；
(4) potentiometric titrations can be quickly by lead ion (Pb2+) it is oxidized to brown lead oxide (PbO2) particle, lead ion goes
Except efficient, removal rate is up to more than 98%.
Description of the drawings
Fig. 1 is the technological process that lead ion method in water removal is gone using sulphite reinforcing manganese sand；
Fig. 2 is the reaction mechanism that lead ion method in water removal is gone using sulphite reinforcing manganese sand.
Specific embodiment
Technical solution of the present invention is not limited to act specific embodiment set forth below, further includes between each specific embodiment
Arbitrary combination.
Specific embodiment one：A kind of side that lead ion in water removal is removed using sulphite reinforcing manganese sand of present embodiment
Method, through the following steps that realize：
First, sulphite (SO is added in into accessing pending water3 2-), control sulfite concentration is 2~100mg/L；
2nd, the accessing pending water containing sulphite is introduced into the filter bed equipped with manganese sand, after being filtered processing, that is, completed
The method for removing lead ion in water removal using sulphite reinforcing manganese sand.
The accessing pending water is underground water, and surface water is discharged after coagulation, precipitation process, and flow is shown in Fig. 1.
A kind of principle that the method for lead ion in water removal is gone using sulphite reinforcing manganese sand of present embodiment：The water Central Asia
Sulfate (SO3 2-) under the catalytic action of manganese sand, by oxygen (O2) rapid oxidation be potentiometric titrations (SO4 ·-), see reaction
Formula (1) to (3), then, the potentiometric titrations of generation can be rapidly by lead ion (Pb of the absorption on manganese sand surface2+) be oxidized to
Brown lead oxide (PbO2) particle, see reaction equation (4), the PbO of generation2Particle is trapped manganese sand surface, reaches Pb in water removal2+
Purpose.Strengthening manganese sand using sulphite goes the reaction mechanism of lead ion in water removal to see Fig. 2.
A kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand of present embodiment has the following advantages：
(1) sulfite chemical property is stablized, and transport, storage are convenient, cheap, are commercially easy to get；
(2) sulphite drinks water reducing agent catalogue by national be formally included in, easy to operate, does not need to additionally increase
Oil (gas) filling device does not change the original treatment process of water factory, can carry out large-scale application；
(3) it is fast to generate potentiometric titrations speed for manganese sand oxygen catalytic oxidation sulphite；
(4) potentiometric titrations can be quickly by lead ion (Pb2+) it is oxidized to brown lead oxide (PbO2) particle, lead ion goes
Except efficient.
Specific embodiment two：The present embodiment is different from the first embodiment in that：In the accessing pending water
Sulfite concentration is 5~90mg/L.It is other same as the specific embodiment one.
Specific embodiment three：The present embodiment is different from the first and the second embodiment in that：The accessing pending water
In sulfite concentration be 10~80mg/L.It is other the same as one or two specific embodiments.
Specific embodiment four：Unlike one of present embodiment and specific embodiment one to three：Described waits to locate
It is 20~70mg/L to manage the sulfite concentration in water.It is other identical with one of specific embodiment one to three.
Specific embodiment five：Unlike one of present embodiment and specific embodiment one to four：Described waits to locate
It is 30~60mg/L to manage the sulfite concentration in water.It is other identical with one of specific embodiment one to four.
Specific embodiment six：Unlike one of present embodiment and specific embodiment one to five：Described waits to locate
It is 40~50mg/L to manage the sulfite concentration in water.It is other identical with one of specific embodiment one to five.
Specific embodiment seven：Unlike one of present embodiment and specific embodiment one to six：Sulphite is
Sodium sulfite (Na2SO3), potassium sulfite (K2SO3), calcium sulfite (CaSO3), sodium hydrogensulfite (NaHSO3), potassium bisulfite
(KHSO3) one or more of mixture.Other steps and one of parameter and specific embodiment one to six are identical.
When present embodiment sulfite salt is mixture, with arbitrary than mixing.
Beneficial effects of the present invention are verified by following embodiment：
Embodiment 1：A kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand of the present embodiment, is logical
Cross following steps realization：Contain 100 μ g/L Pb in pending underground water2+, 10.0mg/L sodium sulfites are added thereto
(Na2SO3), manganese sand filter is then introduced into, remaining plumbum ion concentration in plasma mass spectrograph test water outlet is utilized after filtering
For 5 μ g/L, removal rate is less than up to 95%《Standards for drinking water quality》(GB5749-2006) 10 μ g/L of regulation lead ion in
Limit value.
Embodiment 2：A kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand of the present embodiment, is logical
Cross following steps realization：Containing 100 μ g/L Pb2+Surface water, after coagulation, precipitation process, 20mg/L is added in into water outlet
Sodium hydrogensulfite (NaHSO3), manganese sand filter is then introduced into, Pb in water outlet is measured after filtering2+A concentration of 4 μ g/L, removal
Rate is less than up to 96%《Standards for drinking water quality》(GB5749-2006) limit value of 10 μ g/L of regulation lead ion in.
Embodiment 3：A kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand of the present embodiment, is logical
Cross following steps realization：Containing 200 μ g/L Pb2+Surface water, after coagulation, precipitation process, 30mg/L is added in into water outlet
Potassium sulfite (K2SO3), manganese sand filter is then introduced into, Pb in water outlet is measured after filtering2+A concentration of 6 μ g/L, removal rate
Up to 97%, it is less than《Standards for drinking water quality》(GB5749-2006) limit value of 10 μ g/L of regulation lead ion in.
Embodiment 4：A kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand of the present embodiment, is logical
Cross following steps realization：Containing 200 μ g/L Pb2+Surface water, after coagulation, precipitation process, 30mg/L is added in into water outlet
Calcium sulfite (CaSO3), manganese sand filter is then introduced into, Pb in water outlet is measured after filtering2+A concentration of 8 μ g/L, removal rate
Up to 96%, it is less than《Standards for drinking water quality》(GB5749-2006) limit value of 10 μ g/L of regulation lead ion in.
Embodiment 5：A kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand of the present embodiment, is logical
Cross following steps realization：Containing 500 μ g/L Pb2+Surface water, after coagulation, precipitation process, 50mg/L is added in into water outlet
Potassium bisulfite (KHSO3), manganese sand filter is then introduced into, Pb in water outlet is measured after filtering2+A concentration of 8 μ g/L, removal
Rate is less than up to 98.4%《Standards for drinking water quality》(GB5749-2006) limit value of 10 μ g/L of regulation lead ion in.
Embodiment 6：A kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand of the present embodiment, is logical
Cross following steps realization：Containing 500 μ g/L Pb2+Surface water, after coagulation, precipitation process, 50mg/L is added in into water outlet
Sulphite, sulphite are by sodium sulfite (Na2SO3) and potassium sulfite (K2SO3) it is 1 in molar ratio:1 ratio mixing
It forms, is then introduced into manganese sand filter, Pb in water outlet is measured after filtering2+A concentration of 6 μ g/L, removal rate is small up to 98.8%
In《Standards for drinking water quality》(GB5749-2006) limit value of 10 μ g/L of regulation lead ion in.
Embodiment 7：A kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand of the present embodiment, is logical
Cross following steps realization：Containing 500 μ g/L Pb2+Surface water, after coagulation, precipitation process, 50mg/L is added in into water outlet
Sulphite, sulphite are by sodium sulfite (Na2SO3) and calcium sulfite (CaSO3) it is 1 in molar ratio:1 ratio mixing
It forms, is then introduced into manganese sand filter, Pb in water outlet is measured after filtering2+A concentration of 7 μ g/L, removal rate is small up to 98.6%
In《Standards for drinking water quality》(GB5749-2006) limit value of 10 μ g/L of regulation lead ion in.
Embodiment 8：A kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand of the present embodiment, is logical
Cross following steps realization：Containing 300 μ g/L Pb2+Surface water, after coagulation, precipitation process, 50mg/L is added in into water outlet
Sulphite, sulphite are by sodium sulfite (Na2SO3) and sodium hydrogensulfite (NaHSO3) it is 1 in molar ratio:1 ratio is mixed
It closes, is then introduced into manganese sand filter, Pb in water outlet is measured after filtering2+A concentration of 5 μ g/L, removal rate up to 98.3%,
It is less than《Standards for drinking water quality》(GB5749-2006) limit value of 10 μ g/L of regulation lead ion in.
Embodiment 9：A kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand of the present embodiment, is logical
Cross following steps realization：Containing 300 μ g/L Pb2+Surface water, after coagulation, precipitation process, 50mg/L is added in into water outlet
Sulphite, sulphite are by sodium sulfite (Na2SO3) and potassium bisulfite (KHSO3) it is 1 in molar ratio:1 ratio is mixed
It closes, is then introduced into manganese sand filter, Pb in water outlet is measured after filtering2+A concentration of 5 μ g/L, removal rate up to 98.3%,
It is less than《Standards for drinking water quality》(GB5749-2006) limit value of 10 μ g/L of regulation lead ion in.
Embodiment 10：The present embodiment it is a kind of using sulphite strengthen manganese sand go water removal in lead ion method, be
It is realized by following steps：Containing 400 μ g/L Pb2+Surface water, after coagulation, precipitation process, added in into water outlet
60mg/L sulphite, sulphite are by sodium sulfite (Na2SO3), potassium sulfite (K2SO3) and potassium bisulfite (KHSO3)
It is 1 in molar ratio:1:1 ratio mixes, and is then introduced into manganese sand filter, and Pb in water outlet is measured after filtering2+Concentration
For 5 μ g/L, removal rate is less than up to 98.75%《Standards for drinking water quality》(GB5749-2006) 10 μ of regulation lead ion in
The limit value of g/L.
Embodiment 11：The present embodiment it is a kind of using sulphite strengthen manganese sand go water removal in lead ion method, be
It is realized by following steps：Containing 400 μ g/L Pb2+Surface water, after coagulation, precipitation process, added in into water outlet
60mg/L sulphite, sulphite are by sodium sulfite (Na2SO3), potassium sulfite (K2SO3), calcium sulfite (CaSO3) and it is sub-
Potassium acid sulfate (KHSO3) it is 1 in molar ratio:1:1:1 ratio mixes, and is then introduced into manganese sand filter, is surveyed after filtering
Make Pb in water2+A concentration of 6 μ g/L, removal rate is less than up to 98.5%《Standards for drinking water quality》(GB5749-2006)
The limit value of 10 μ g/L of middle regulation lead ion.
Embodiment 12：The present embodiment it is a kind of using sulphite strengthen manganese sand go water removal in lead ion method, be
It is realized by following steps：Containing 500 μ g/L Pb2+Surface water, after coagulation, precipitation process, added in into water outlet
60mg/L sulphite, sulphite are by sodium sulfite (Na2SO3), potassium sulfite (K2SO3), calcium sulfite (CaSO3), it is sub-
Niter cake (NaHSO3) and potassium bisulfite (KHSO3) it is 1 in molar ratio:1:1:1:1 ratio mixes, then by it
Manganese sand filter is introduced, Pb in water outlet is measured after filtering2+A concentration of 5 μ g/L, removal rate is less than up to 99%《Drinking Water is defended
Raw standard》(GB5749-2006) limit value of 10 μ g/L of regulation lead ion in.
It can be seen that strengthening manganese sand using sulphite goes the method for lead ion in water removal with than more prominent advantage.
Claims (10)
1. it is a kind of using sulphite strengthen manganese sand go water removal in lead ion method, it is characterised in that it through the following steps that
It realizes：
First, sulphite is added in into accessing pending water, control sulfite concentration is 2~100mg/L；
2nd, the accessing pending water containing sulphite is introduced into the filter bed equipped with manganese sand, after being filtered processing, that is, completes to utilize
Sulphite strengthens the method that manganese sand removes lead ion in water removal.
2. a kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand according to claim 1, feature
It is sulphite for one or more of sodium sulfite, potassium sulfite, calcium sulfite, sodium hydrogensulfite, potassium bisulfite
Mixture.
3. a kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand according to claim 1, feature
It is that the accessing pending water is discharged for underground water or surface water after coagulation, precipitation process.
4. a kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand according to claim 1, feature
It is 5~90mg/L to be the sulfite concentration in the accessing pending water.
5. a kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand according to claim 1, feature
It is 10~80mg/L to be the sulfite concentration in the accessing pending water.
6. a kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand according to claim 1, feature
It is 20~70mg/L to be the sulfite concentration in the accessing pending water.
7. a kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand according to claim 1, feature
It is 30~60mg/L to be the sulfite concentration in the accessing pending water.
8. a kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand according to claim 1, feature
It is 40~50mg/L to be the sulfite concentration in the accessing pending water.
9. a kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand according to claim 1, feature
It is 15mg/L to be the sulfite concentration in the accessing pending water.
10. a kind of method for removing lead ion in water removal using sulphite reinforcing manganese sand according to claim 1, feature
It is in the accessing pending water that plumbum ion concentration is 10~1000 μ g/L.
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Application publication date: 20180608 |