CN106186161A - A kind of pig manure charcoal is utilized to remove the method for lead in polluted-water - Google Patents
A kind of pig manure charcoal is utilized to remove the method for lead in polluted-water Download PDFInfo
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- CN106186161A CN106186161A CN201610657157.0A CN201610657157A CN106186161A CN 106186161 A CN106186161 A CN 106186161A CN 201610657157 A CN201610657157 A CN 201610657157A CN 106186161 A CN106186161 A CN 106186161A
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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
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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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
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
- B01J2220/4887—Residues, wastes, e.g. garbage, municipal or industrial sludges, compost, animal manure; fly-ashes
-
- 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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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Treatment By Sorption (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses and a kind of utilize pig manure charcoal to remove the method for lead in polluted-water；Belong to technical field of sewage；Technical points comprises the steps: that (1) prepares pig manure charcoal；(2) pH of lead contamination water body is adjusted to 4～7, the lead concentration in polluted-water is adjusted to 50～1000mg/L simultaneously；(3) the pig manure charcoal prepared is joined in the lead contamination water body after adjustment with the dosage of 0.2～5g/L, response time Adsorption lead；It is desirable to provide a kind of pig manure charcoal that utilizes simple to operate, high-efficiency environment friendly removes the method for lead in polluted-water；For removing the lead in polluted-water.
Description
Technical field
The present invention relates to a kind of remove the method for lead in polluted-water, more specifically, particularly relate to one and utilize pig manure
Charcoal removes the method for lead in polluted-water.
Background technology
Lead is the heavy metal element that a kind of toxicity is the biggest, and intelligence can be caused to decline (especially to children for learning aspect), kidney
The harmful effects such as damage, sterile, miscarriage and hypertension.Investigation shows, in the natural water in the multiple area of China, lead contains
Amount exceeds standard, and lead contamination phenomenon is commonplace, and lead poisoning event occurs the most again and again.The lead waste water of industrial and mining establishment's discharge is to cause me
One of main pollution source of state's surface water body lead contamination.At present, process lead waste water technology mainly have chemical precipitation method, from
Sub-exchange process, electrolysis and biosorption process etc..Chemical precipitation method exists that floor space is big, treating capacity is little, poor selectivity etc.
Shortcoming；The shortcoming of ion exchange is that one-time investment is bigger, and regeneration there be difficulties involved when；Electrolysis processes at present and contains
Lead waste water difficulty is relatively big, but the most potential, and the method is the most still in conceptual phase.
Use biomaterial to process and the technology of recovery lead waste water is both simple and economic administering method, caused
The attention of people.The affinity that biomaterial heavy metal is natural, may be used to the lead ion waste water that purified concentrations scope is wider
And the metal ion waste water of mixing.Its advantage has: 1. affected little by pH value；The most do not use chemical reagent；3. sludge quantity is few；
4. non-secondary pollution；5. discharge water can reuse；6. in bacterium mud, metal is recyclable and bacterium mud can be used as fertilizer.Biosorption process will be
The method that Sewage advanced treatment is conventional.
Pig manure is the biomass that a kind of yield is big, utilization rate is low and cheap, if can not only as the raw material of charcoal with it
Reduce the pollution that tradition pig manure is discarded or air, soil, subsoil water are caused by compost method, and the porous of charcoal can be utilized
The characteristics such as structure and stronger alkalescence, by the absorption of heavy metal, precipitation, complexation, ion exchange and oxidoreduction etc. be
Row reaction, reduces the heavy metal transportable property in water body and biological effectiveness, thus reaches effectively to control Heavy Metals in Waters
The purpose polluted.Pig manure is carried out the technology of pyrolysis processing not only efficiently, easily enforcement, non-secondary pollution, application effective, overcome
The shortcomings such as original technology occupied ground is big, investment is big, produce secondary pollution, cycle length, energy consumption are high, and this technical costs is low,
Treatment effeciency is high, simple to operate, and the reparation for heavy metal-polluted water has preferable application prospect.
Summary of the invention
Present invention aims to above-mentioned the deficiencies in the prior art, it is provided that a kind of simple to operate, profit of high-efficiency environment friendly
The method of lead in polluted-water is removed with pig manure charcoal.
The technical scheme is that and be achieved in that: a kind of utilize pig manure charcoal to remove the side of lead in polluted-water
Method, the method comprises the steps: that (1) prepares pig manure charcoal；(2) pH of lead contamination water body is adjusted to 4～7, will simultaneously
Lead concentration in polluted-water is adjusted to 50～1000mg/L；(3) by the pig manure charcoal prepared with 0.2～5g/L add
Amount joins in the lead contamination water body after adjustment, Adsorption lead.
The above-mentioned pig manure charcoal that utilizes is removed in polluted-water in the method for lead, and step (1) is described prepares pig manure biology
Charcoal particularly as follows: a) gather fresh pig manure, dry in the sun 5～7 days in the sun, then pulverize, sieve, sealed type storage is standby；B) by powder
Broken sieve after pig manure granule put in tube furnace, be passed through nitrogen with the speed of 0.25～0.4L/min, by room temperature rise to pyrolysis
Final temperature, pyrolysis final temperature is 300 DEG C～700 DEG C, and keeps 15min～4h in pyrolysis final temperature, is then cooled to room temperature, thermal decomposition product
Through pulverizing, cross 60 mesh sieves prepare pig manure charcoal.
The above-mentioned pig manure charcoal that utilizes is removed in polluted-water in the method for lead, and step a) is particularly as follows: gather fresh pig
Excrement, spreads dry in the sun 5～7 days in the sun out, and ambient temperature is 30～40 DEG C, when detecting pig manure moisture content and being 9～12%, collects
Pig manure carries out pulverizing, crossing 20 mesh sieves, and sealed type storage is standby.
The above-mentioned pig manure charcoal that utilizes is removed in polluted-water in the method for lead, in step b), room temperature rises to pyrolysis
The heating rate of final temperature is 8～12 DEG C/min.
The above-mentioned pig manure charcoal that utilizes is removed in polluted-water in the method for lead, in step (2), and the pH of lead contamination water body
It is 4.5～6.
The above-mentioned pig manure charcoal that utilizes is removed in polluted-water in the method for lead, in step (3), and the throwing of pig manure charcoal
Dosage is 1～2g/L, and the response time is 1～24h, and ambient temperature during reaction is 20～30 DEG C.
After the present invention uses said method, compared with prior art, there is following advantage:
(1) raw material sources preparing charcoal is wide, with low cost, and preparation method productivity is high, easily operation, easily promote.
(2), after pig manure being prepared as charcoal, it is possible not only to alleviate its destruction to ecological environment, but also can inhale
Attached/to absorb the pollutant in water body, it is achieved that the recycling of pig manure.
(3) pig manure is notable, far above other adsorbents to the adsorption effect of lead；And conveniently reclaim, secondary will not be produced
Pollute.
(4) the pig manure charcoal that prepared by this method is possible not only to remove lead, also has other heavy metals and certain goes decapacitation
Power.
Accompanying drawing explanation
The present invention is described in further detail for embodiment in below in conjunction with the accompanying drawings, but is not intended that the present invention's
Any restriction.
Fig. 1 is the different pyrolysis temperature schematic diagrams to pig manure charcoal yield impact；
Fig. 2 is the schematic diagram that pig manure charcoal adsorbance is affected by different pyrolysis temperature；
Fig. 3 is the schematic diagram that pig manure charcoal adsorbance is affected by the lead ion of variable concentrations；
Fig. 4 is the schematic diagram that pig manure charcoal adsorbance is affected by different solutions original ph；
Fig. 5 is the schematic diagram differential responses time affected pig manure charcoal adsorbance；
Fig. 6 is the schematic diagram that lead ion adsorption rate is affected by different pig manure charcoal dosage.
Detailed description of the invention
The a kind of of the present invention utilizes pig manure charcoal to remove the method for lead in polluted-water, and the method comprises the steps:
(1) pig manure charcoal is prepared, particularly as follows:
A) gathering fresh pig manure, spread dry in the sun 5～7 days in the sun out, ambient temperature is 30～40 DEG C, when detection pig manure contains
When water rate is 9～12%, collecting pig manure and carry out pulverizing, crossing 20 mesh sieves, sealed type storage is standby；
B) the pig manure granule after pulverizing and sieving is put in tube furnace, is passed through nitrogen with the speed of 0.25～0.4L/min,
Being risen to be pyrolyzed final temperature by room temperature, heating rate is 8～12 DEG C/min, and pyrolysis final temperature is 300 DEG C～700 DEG C, and in pyrolysis final temperature
Keep 15min～4h, be then cooled to room temperature, thermal decomposition product through pulverizing, cross 60 mesh sieves prepare pig manure charcoal.
As depicted in figs. 1 and 2: under the conditions of 300 DEG C～500 DEG C, pig manure charcoal productivity declines very fast, and productivity is all higher than
50%；Under the conditions of 500 DEG C～700 DEG C, pig manure charcoal productivity declines relatively slow, and productivity is respectively less than 50%.Meanwhile, at 300 DEG C
～in the range of 500 DEG C, along with the rising of pyrolysis final temperature, the adsorbance of lead ion is quickly increased by charcoal, when 500 DEG C, inhale
Attached amount reaches maximum, then rapid decrease.Therefore, pyrolysis final temperature selects at 300 DEG C～700 DEG C, and preferably 500 DEG C is
Good value.
(2) pH of lead contamination water body is adjusted to 4～7, preferably 4.5～6.Lead concentration in polluted-water is adjusted simultaneously
Whole is 50～1000mg/L；
During as it is shown on figure 3, lead concentration is 500mg/L, charcoal is 491.7mg/g to the adsorbance of lead, and along with lead
The increase of concentration, the adsorbance of charcoal continues to increase.Lead solution clearance to 500mg/L is 98.3%.To 300mg/L's
Lead solution clearance, more than 99.5%, is substantially completely removed, and reaches first discharge standard.Therefore, processing first, first by lead
Attempt adjusting to a relatively reasonable numerical value, to reaching preferable adsorption effect.
Refering to shown in Fig. 4, being 500mg/L in lead solution concentration, when dosage is 1g/L, the change of pH value is to charcoal
Adsorbance can have an impact.When pH value is 5, charcoal is maximum, up to 499.3mg/g to the adsorbance of lead.PH < when 5, adsorbance
With pH increase and increase, pH > 5 time, adsorbance with pH value increase and reduce.Therefore, when carrying out lead absorption with this understanding, lead is molten
Liquid Optimal pH is between 4.5～6.
(3) by the pig manure charcoal for preparing with 0.2～5g/L, after the dosage of preferably 1～2g/L joins adjustment
Lead contamination water body in Adsorption lead, the response time is 1～24h, and ambient temperature during reaction is 20～30 DEG C.
Refering to shown in Fig. 5 and Fig. 6, in the starting stage, the increase in time of the adsorbance of lead is steeply risen by charcoal,
When reacting 0.4h, adsorbance just reaches more than the 80% of equilibrium adsorption capacity, and ascendant trend tends towards stability subsequently, when 1h, and base
This all reaches adsorption equilibrium, and in 500mg/L solution, its equilibrium adsorption capacity is 497.6mg/g.Meanwhile, charcoal dosage exists
During below 1g/L, charcoal dosage is the most, the biggest to the adsorption rate of lead, dosage when more than 1g/L, the absorption of charcoal
Basically reach saturated.
Therefore, effectively utilize charcoal, the dosage of pig manure charcoal for realizing preferable adsorption effect simultaneously, control
0.2～5g/L, preferably 1～2g/L.Meanwhile, the response time controls 1～24h, to while active adsorption, further
Lasting effects.
Embodiment 1
The a kind of of the present invention utilizes pig manure charcoal to remove the method for lead in polluted-water, and the method comprises the steps:
(1) pig manure charcoal is prepared, particularly as follows:
A) gathering fresh pig manure, spread dry in the sun in the sun out 5 days, ambient temperature is 40 DEG C, and detection pig manure moisture content is
9.5%, to collect pig manure and carry out pulverizing, crossing 20 mesh sieves, sealed type storage is standby；
B) the pig manure granule after pulverizing and sieving is put in tube furnace, is passed through nitrogen with the speed of 0.25L/min, by room temperature
Rising to be pyrolyzed final temperature, heating rate is 8 DEG C/min, and pyrolysis final temperature is 300 DEG C, and keeps 4h in pyrolysis final temperature, is subsequently cooled to
Room temperature, thermal decomposition product through pulverizing, cross 60 mesh sieves prepare pig manure charcoal.
(2) pH of lead contamination water body is adjusted to 4.Lead concentration in polluted-water is adjusted to 50mg/L simultaneously；
(3) the pig manure charcoal prepared is joined absorption in the lead contamination water body after adjustment with the dosage of 0.2g/L
Removing lead, the response time is 1h, and ambient temperature during reaction is 20 DEG C, and oscillation rate is 220r/min.0.45 μm crossed by mixed liquor
Filter membrane, measures content of beary metal in filtrate after filtrate acid adding.
The charcoal that the present embodiment obtains is 239.3mg/g to the adsorbance of lead, and the clearance to lead is 95.7%.
Embodiment 2
The a kind of of the present invention utilizes pig manure charcoal to remove the method for lead in polluted-water, and the method comprises the steps:
(1) pig manure charcoal is prepared, particularly as follows:
A) gathering fresh pig manure, spread dry in the sun in the sun out 5 days, ambient temperature is 32 DEG C, and detection pig manure moisture content is
9%, to collect pig manure and carry out pulverizing, crossing 20 mesh sieves, sealed type storage is standby；
B) the pig manure granule after pulverizing and sieving is put in tube furnace, is passed through nitrogen with the speed of 0.3L/min, by room temperature
Rising to be pyrolyzed final temperature, heating rate is 10 DEG C/min, and pyrolysis final temperature is 500 DEG C, and keeps 2h in pyrolysis final temperature, is subsequently cooled to
Room temperature, thermal decomposition product through pulverizing, cross 60 mesh sieves prepare pig manure charcoal.
(2) pH of lead contamination water body is adjusted 5.Lead concentration in polluted-water is adjusted to 500mg/L simultaneously；
(3) the lead contamination water body after the pig manure charcoal prepared being joined adjustment with the dosage of 1g/L adsorbs and goes
Except lead, the response time is 3h, and ambient temperature during reaction is 25 DEG C, and oscillation rate is 200r/min.0.45 μm filter crossed by mixed liquor
Film, measures content of beary metal in filtrate after filtrate acid adding.
The charcoal that the present embodiment obtains is 487.0mg/g to the adsorbance of lead, and the clearance to lead is 97.4%.
Embodiment 3
The a kind of of the present invention utilizes pig manure charcoal to remove the method for lead in polluted-water, and the method comprises the steps:
(1) pig manure charcoal is prepared, particularly as follows:
A) gathering fresh pig manure, spread dry in the sun in the sun out 6 days, ambient temperature is 30 DEG C, when detection pig manure moisture content is
When 12%, collecting pig manure and carry out pulverizing, crossing 20 mesh sieves, sealed type storage is standby；
B) the pig manure granule after pulverizing and sieving is put in tube furnace, is passed through nitrogen with the speed of 0.35L/min, by room temperature
Rising to be pyrolyzed final temperature, heating rate is 12 DEG C/min, and pyrolysis final temperature is 700 DEG C, and keeps 15min in pyrolysis final temperature, the coldest
But to room temperature, thermal decomposition product through pulverizing, cross 60 mesh sieves prepare pig manure charcoal.
(2) pH of lead contamination water body is adjusted to 7.Lead concentration in polluted-water is adjusted to 1000mg/L simultaneously；
(3) the lead contamination water body after the pig manure charcoal prepared being joined adjustment with the dosage of 5g/L adsorbs and goes
Except lead, the response time is 24h, and ambient temperature during reaction is 25 DEG C, and oscillation rate is 210r/min.0.45 μm filter crossed by mixed liquor
Film, measures content of beary metal in filtrate after filtrate acid adding.
The charcoal that the present embodiment obtains is 198.6mg/g to the adsorbance of lead, and the clearance to lead is 99.3%.
Embodiment 4
The a kind of of the present invention utilizes pig manure charcoal to remove the method for lead in polluted-water, and the method comprises the steps:
(1) pig manure charcoal is prepared, particularly as follows:
A) gathering fresh pig manure, spread dry in the sun in the sun out 7 days, ambient temperature is 40 DEG C, when detection pig manure moisture content is
When 10.3%, collecting pig manure and carry out pulverizing, crossing 20 mesh sieves, sealed type storage is standby；
B) the pig manure granule after pulverizing and sieving is put in tube furnace, is passed through nitrogen with the speed of 0.4L/min, by room temperature
Rising to be pyrolyzed final temperature, heating rate is 11 DEG C/min, and pyrolysis final temperature is 400 DEG C, and keeps 3h in pyrolysis final temperature, is subsequently cooled to
Room temperature, thermal decomposition product through pulverizing, cross 60 mesh sieves prepare pig manure charcoal.
(2) pH of lead contamination water body is adjusted to 6.Lead concentration in polluted-water is adjusted to 800mg/L simultaneously；
(3) the lead contamination water body after the pig manure charcoal prepared being joined adjustment with the dosage of 3g/L adsorbs and goes
Except lead, the response time is 12h, and ambient temperature during reaction is 30 DEG C, and oscillation rate is 190r/min.0.45 μm filter crossed by mixed liquor
Film, measures content of beary metal in filtrate after filtrate acid adding.
The charcoal that the present embodiment obtains is 261.6mg/g to the adsorbance of lead, and the clearance to lead is 98.1%.
Embodiment 5
The a kind of of the present invention utilizes pig manure charcoal to remove the method for lead in polluted-water, and the method comprises the steps:
(1) pig manure charcoal is prepared, particularly as follows:
A) gathering fresh pig manure, spread dry in the sun in the sun out 6 days, ambient temperature is 38 DEG C, when detection pig manure moisture content is
When 11.2%, collecting pig manure and carry out pulverizing, crossing 20 mesh sieves, sealed type storage is standby；
B) the pig manure granule after pulverizing and sieving is put in tube furnace, is passed through nitrogen with the speed of 0.3L/min, by room temperature
Rising to be pyrolyzed final temperature, heating rate is 10 DEG C/min, and pyrolysis final temperature is 600 DEG C, and keeps 1h in pyrolysis final temperature, is subsequently cooled to
Room temperature, thermal decomposition product through pulverizing, cross 60 mesh sieves prepare pig manure charcoal.
(2) pH of lead contamination water body is adjusted to 4.5.Lead concentration in polluted-water is adjusted to 300mg/L simultaneously；
(3) the pig manure charcoal prepared is joined absorption in the lead contamination water body after adjustment with the dosage of 0.8g/L
Removing lead, the response time is 4h, and ambient temperature during reaction is 25 DEG C, and oscillation rate is 220r/min.0.45 μm crossed by mixed liquor
Filter membrane, measures content of beary metal in filtrate after filtrate acid adding.
The charcoal that the present embodiment obtains is 361.9mg/g to the adsorbance of lead, and the clearance to lead is 96.5%.
Contrast experiment 1
Other conditions are constant, use the mud of the method rice straw in embodiment 1 and municipal sewage plant to prepare
Become charcoal, then study they and activated carbon adsorbance difference in lead concentration is the solution that 500mg/L, pH are 5, to lead
For 66.9mg/g, 52.4mg/g and 56.1mg/g, and charcoal prepared by pig manure to the adsorbance of lead up to 498.2mg/g, point
It not 7～10 times of charcoal adsorbent amount prepared by above-mentioned 2 kinds of other raw materials, and be 8 times of activated carbon adsorption amount
Many.This illustrates that lead is adsorbed by pig manure charcoal and is far above other adsorbents with type.
Contrast experiment 2
Constant in other conditions, use embodiment 1 preparation pig manure charcoal, then study it respectively lead, cadmium, copper and
Zinc 4 heavy metal species ion concentration is in the solution that 500mg/L, pH are 5, use equivalent responses condition, individually to 4 heavy metal species from
The adsorbance of son is respectively 498.2mg/g (adsorbance of lead), 29.4mg/g (adsorbance of cadmium), the 37.9mg/g (absorption of copper
Amount) and 12.7mg/g (adsorbance of zinc), it is 17 times of adsorbance, 13 times and 19 of other 3 kinds of metals to the adsorbance of lead
Times.This explanation pig manure charcoal is applied to the improvement of lead contamination water body and will have higher relative to removing other heavy metal ion
Efficiency.
The size of ABSORBENTS ABSORPTION adsorption of metal ions amount is mainly affected by 3 aspect factors: adsorbent species (example
Such as activated carbon, biomass carbon, microorganism, clay mineral etc.) and source, heavy metal ion kind and concentration (such as lead, cadmium, copper,
Zinc etc.) and environmental factors (such as pH value of solution, temperature etc.).These factors make different adsorbents to same heavy metal from
Son, or same adsorbent is to different heavy metal ion, or react under different environmental conditions, the adsorbance obtained is poor
Different the biggest, adsorbance is typically from several mg/g to hundreds of mg/g.Therefore, the clearance of different ABSORBENTS ABSORPTION metal ions
Also differ greatly with treatment effeciency.In general, it is difficult to find a kind of adsorbent to process various heavy, different huge sum of moneys simultaneously
Belonging to ion needs different adsorbents to process.Therefore, the present invention uses pig manure charcoal for the suction of lead innovatively
Attached, not only raw material sources is wide, with low cost, and preparation method productivity is high, easily operation, easily promote.Pig manure is prepared as raw
After thing charcoal, it is possible not only to alleviate its destruction to ecological environment, but also can be with the pollutant in adsorption/absorption water body, it is achieved
The recycling of pig manure.Prior, pig manure is notable, far above other adsorbents to the adsorption effect of lead；And it is convenient
Reclaim, secondary pollution will not be produced.
Embodiment provided above is the better embodiment of the present invention, is only used for the convenient explanation present invention, not to this
Bright make any pro forma restriction, any art has usually intellectual, if without departing from the carried skill of the present invention
In the range of art feature, utilize the Equivalent embodiments that the done local of disclosed technology contents is changed or modified, and
Without departing from the technical characteristic content of the present invention, all still fall within the range of the technology of the present invention feature.
Claims (6)
1. one kind utilizes pig manure charcoal to remove the method for lead in polluted-water, it is characterised in that the method comprises the steps:
(1) pig manure charcoal is prepared；(2) pH of lead contamination water body is adjusted to 4～7, the lead concentration in polluted-water is adjusted simultaneously
It is 50～1000mg/L；(3) the pig manure charcoal prepared is joined the lead contamination after adjustment with the dosage of 0.2～5g/L
In water body, Adsorption lead.
The most according to claim 1 pig manure charcoal is utilized to remove the method for lead in polluted-water, it is characterised in that step
(1) described pig manure charcoal is prepared particularly as follows: a) gather fresh pig manure, dry in the sun 5～7 days in the sun, then pulverize, sieve,
Sealed type storage is standby；B) the pig manure granule after pulverizing and sieving is put in tube furnace, is passed through with the speed of 0.25～0.4L/min
Nitrogen, is risen to be pyrolyzed final temperature by room temperature, and pyrolysis final temperature is 300 DEG C～700 DEG C, and keeps 15min～4h in pyrolysis final temperature, then
Be cooled to room temperature, thermal decomposition product through pulverizing, cross 60 mesh sieves prepare pig manure charcoal.
The most according to claim 2 pig manure charcoal is utilized to remove the method for lead in polluted-water, it is characterised in that step
A) particularly as follows: gather fresh pig manure, spreading dry in the sun 5～7 days in the sun out, ambient temperature is 30～40 DEG C, when detection pig manure contains
When water rate is 9～12%, collecting pig manure and carry out pulverizing, crossing 20 mesh sieves, sealed type storage is standby.
The most according to claim 2 pig manure charcoal is utilized to remove the method for lead in polluted-water, it is characterised in that step
B) in, room temperature the heating rate rising to be pyrolyzed final temperature is 8～12 DEG C/min.
The most according to claim 1 pig manure charcoal is utilized to remove the method for lead in polluted-water, it is characterised in that step
(2), in, the pH of lead contamination water body is 4.5～6.
The most according to claim 1 pig manure charcoal is utilized to remove the method for lead in polluted-water, it is characterised in that step
(3) in, the dosage of pig manure charcoal is 1～2g/L, and the response time is 1～24h, and ambient temperature during reaction is 20～30
℃。
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Cited By (13)
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| CN107161975A (en) * | 2017-05-31 | 2017-09-15 | 广东维清环境工程有限公司 | A kind of preparation method of pig manure charcoal |
| CN107456950A (en) * | 2017-09-26 | 2017-12-12 | 四川农业大学 | A kind of preparation of brewex's grains charcoal and its application in lead waste water |
| CN108079949A (en) * | 2017-12-27 | 2018-05-29 | 湖南大学 | The method that lead in water body is removed using magnetic pig manure charcoal |
| CN108126657A (en) * | 2017-12-27 | 2018-06-08 | 湖南大学 | Magnetic pig manure charcoal and preparation method thereof |
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| CN108160057A (en) * | 2018-01-09 | 2018-06-15 | 青岛农业大学 | A kind of graphene oxide be modified pig manure charcoal and preparation method thereof and in sewage is removed cadmium application |
| CN108212081A (en) * | 2017-12-20 | 2018-06-29 | 新疆医科大学 | A kind of Xi Payi consolidates the gum liquid dregs of a decoction and prepares the method for charcoal and the application of charcoal |
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| CN109939661A (en) * | 2019-03-15 | 2019-06-28 | 农业农村部环境保护科研监测所 | A kind of adsorbent and its preparation method and application of adsorbable fixed heavy metal lead ion |
| CN110014030A (en) * | 2019-04-24 | 2019-07-16 | 广西博世科环保科技股份有限公司 | A kind of reparation mercury, cadmium, lead, the passivator of zinc combined contamination soil and its application method |
| CN110395710A (en) * | 2019-08-28 | 2019-11-01 | 天津大学 | A method of charcoal is prepared using compost sheep dung |
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| CN108160057A (en) * | 2018-01-09 | 2018-06-15 | 青岛农业大学 | A kind of graphene oxide be modified pig manure charcoal and preparation method thereof and in sewage is removed cadmium application |
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