CN108636351A - A kind of adsorbent and the preparation method and application thereof being used for phosphorus-containing wastewater or eutrophication water dephosphorization - Google Patents
A kind of adsorbent and the preparation method and application thereof being used for phosphorus-containing wastewater or eutrophication water dephosphorization Download PDFInfo
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- CN108636351A CN108636351A CN201810465517.6A CN201810465517A CN108636351A CN 108636351 A CN108636351 A CN 108636351A CN 201810465517 A CN201810465517 A CN 201810465517A CN 108636351 A CN108636351 A CN 108636351A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3078—Thermal treatment, e.g. calcining or pyrolizing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3234—Inorganic material layers
- B01J20/3236—Inorganic material layers containing metal, other than zeolites, e.g. oxides, hydroxides, sulphides or salts
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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
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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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
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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
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4843—Algae, aquatic plants or sea vegetals, e.g. seeweeds, eelgrass
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
Abstract
The invention discloses a kind of adsorbents and the preparation method and application thereof being used for low-concentration phosphorus-containing wastewater or eutrophication water dephosphorization.For the adsorbent using the loaded modified reed charcoal of iron, the load capacity of the iron is 46.30 mgg‑1~115.80 mgg‑1.Adsorbent preparation process of the present invention is carried out at the same time using load with pyrolysis, and production stage is simplified, easy to operate, non-secondary pollution, and increases the load capacity of iron, improves absorption property.
Description
Technical field
The present invention relates to a kind of adsorbents, and in particular to one kind being used for low-concentration phosphorus-containing wastewater or eutrophication water dephosphorization
Load iron reed biology carbon adsorbent and the preparation method and application thereof.
Background technology
China's Wetland Area about reaches 6.8 × 107 hm2, it is only second to Canada and Russia, occupies the 3rd, the world.According to
Statistics, China's reed straw area about reach 1,300,000 hm2 , gross annual output amount reaches 2,200,000 tons.Contain cellulose in reed straw,
It can be used as papermaking, weaving mat, curtain etc.；Reed straw root also has medical value, there is the effects that clearing heat and promoting fluid, anticancer.But I
State's reed straw annual output is big, and the reed straw amount for being really used as papermaking, medicinal etc. is limited, still there is most reed straw
It is unable to get reasonable utilization.Resource reclaim recycling is carried out to wetland plant reed straw, cannot be fully used excessive
Reed straw resource turn waste into wealth, it has also become hot issue urgently to be resolved hurrily.By reed straw resource recycling, it is prepared into
Charcoal turns waste into wealth waste, improves the level of resources utilization, reduces pollution.
China water resource occupancy volume per person is few, and distribution is uneven, with carrying for economic development and the overall living standard of society
The demand of height, water resource is growing, and water pollution is serious.The water pollution of the wherein surface water such as lake is more than half to be
By nitrogen, the exceeded caused body eutrophication of phosphorus.According to Li Beige minimum value laws：The growth of plant is supplied to depending on the external world
That minimum one kind of quantity in its required nutriment.The empirical formula of algae is C106H236O110N16P, it is found that in algae
What shared weight percent was minimum in molecular formula is nitrogen and phosphorus, especially phosphorus.The waste water dephosphorization method master used both at home and abroad at present
To include chemical precipitation method, bioanalysis and absorption method.Although chemical precipitation method is high to the removal rate of phosphorus, operating cost is high, residual
The metal ion stayed not only makes effluent color dilution increase, and generates and be largely difficult to the sludge handled and be easy to cause secondary pollution, and
And it is also possible to that chronic toxic action can be generated to biology；Bioanalysis dephosphorization is by the external operations condition shadow such as temperature, dissolved oxygen, pH value
It rings greatly, dephosphorization process operation stability is poor, and water outlet total phosphorus is difficult to up to standard.In comparison, absorption method compensates for a certain extent
The deficiency of above two method, has that floor space is small, simple for process, operating cost is low, non-secondary pollution, phosphorus removal property are steady
The features such as fixed, easy to operate.It is to find a kind of adsorbent being appropriately applicable in, it is desirable that the adsorption capacity of adsorbent is high, selective
It gets well, can regenerate, performance is stablized.
Invention content
The purpose of the present invention is to solve defects existing in the prior art, provide a kind of adsorption rate to low phosphorus
Higher adsorbent.
In order to reach above-mentioned adsorbent, the present invention provides one kind to remove for low-concentration phosphorus-containing wastewater or eutrophication water
The adsorbent of phosphorus, the adsorbent use the reed charcoal that iron is modified, and the load capacity of iron is 46.30 mgg thereon-1~
115.80 mg·g-1。
The load capacity of iron is preferably 59.2 mgg in adsorbent of the present invention-1~115.80 mgg-1, more excellent 86.5
mg·g-1~115.80 mgg-1, best 115.80 mgg-1。
The present invention also provides the preparation methods of above-mentioned adsorbent, include the following steps：
（1）Taking clean reed straw to put in an oven, drying to constant weight in 85~105 DEG C, and it is about 0.5 that taking-up, which shreds into length,
The segment of~1cm；
（2）By（1）10 g of reed straw that segment is broken into step is filled in crucible, and 50 mL ferric chloride solutions are added, and keeps
Iron reed straw mass ratio is 0.14~0.56:1, it is placed in Muffle furnace and is pyrolyzed, pyrolysis temperature is 200~500 DEG C, heating
Speed is 15 DEG C of min-1, keep 1~4 h；A concentration of 0.5 molL of the ferric chloride solution-1~1.5molL-1；
（3）By（2）In step pyrolysis after the completion of take out crucible be cooled to room temperature to get.
Wherein, the concentration of ferric chloride solution preferably 0.75 molL-1~1.25 molL-1；Pyrolysis temperature preferably 250
~450 DEG C, pyrolysis time preferably 1~3 h.
The optium concentration of ferric chloride solution is 1.125 molL-1；Most preferably 350 DEG C of pyrolysis temperature, pyrolysis time is best
For 2 h.
Step（3）After pyrolysis is cooling, it is neutrality to be washed with deionized water to filtrate, is placed in baking oven and dries 6~12 h to get this
Invention adsorbent.
The reed straw that reed straw takes jaundice withered, is washed with deionized water surface dirt, then dried.
The present invention also provides above-mentioned adsorbent answering in terms of for low-concentration phosphorus-containing wastewater, eutrophication water dephosphorization
With.
Specifically, when for low-concentration phosphorus-containing wastewater dephosphorization, the concentration of Phosphorus From Wastewater is no more than 4 mgL-1, adsorbent
Dosage is 0.8-1.0 gL-1；
When for eutrophication water dephosphorization, the dosage of adsorbent is 0.05-0.25 gL-1, preferably 0.15-0.25 g
L-1。
The present invention has the following advantages compared with prior art：
1, the present invention uses reed straw for raw material, and modified reed charcoal is prepared by loading the method that iron chloride is modified,
Phosphate radical is had an effect with the iron being supported in carbon surface and hole, can reach good phosphor-removing effect.The present invention uses chlorination
Iron is raw material, at low cost and nontoxic, while rich carbon, fine grained, the porous material that organic matter material pyrolysis generates, porosity characteristic
Migration place is provided for Soil Microorganism, the modification reed charcoal after absorption contains abundant ferro element and P elements,
Recoverable provides fertility as plant growth fertilizer, for soil, environmentally protective.
2, reed straw derives from a wealth of sources, is of low cost, since its reproduction speed is fast, biomass is big, if without timely
Processing, can rot that environmental pollution, the present invention is caused to be provided for a kind of effective solution approach, iron is firmly supported on reed
On reed charcoal, the excellent adsorbent of the phosphorus removal property of function admirable is prepared, and realize the recycling of reed.
3, adsorbent preparation process of the present invention is carried out at the same time using load with pyrolysis, simplifies production stage, operating procedure
Simply, non-secondary pollution, and the load capacity of iron is increased, improve absorption property.
Description of the drawings
Fig. 1 is the XRD diagram of adsorbent of the present invention；
Fig. 2 is that the FTIR of adsorbent of the present invention schemes；
Fig. 3 is the SEM comparison diagrams of adsorbent of the present invention and reed straw.
In Fig. 3, A is that the SEM of reed straw schemes, and B is that the SEM of adsorbent of the present invention schemes.
Specific implementation mode
With reference to specific embodiment, the present invention is described in detail, and following embodiment is only lifted as the part of the present invention
Example explanation, it is any to be within the scope of the invention with the approximate product that approximation method of the present invention is prepared.
The pretreatment of reed straw：Reed is picked, surface dirt is washed with deionized water, is then placed on clean reed
Drying to constant weight in 85~105 DEG C in baking oven, and taking-up shreds into the fritter that length is about 0.5~1 cm.
Embodiment one
It weighs 10 g to be put into crucible by pretreated reed straw, a concentration of 1 molL of 50 mL is added-1FeCl3
Solution, the mass ratio 0.28 of iron and reed straw at this time：1, it is placed in Muffle furnace at 350 DEG C and is pyrolyzed 1 h.After take out crucible
It is cooled to room temperature, it is neutrality that taking-up, which is washed with deionized water to filtrate, is placed in baking oven and dries 6 h, that is, prepares modified reed life of tapping a blast furnace
Object charcoal A.
Embodiment two：
It weighs 10 g to be put into crucible by pretreated reed straw, a concentration of 1 molL of 50 mL is added-1FeCl3
Solution, the mass ratio 0.28 of iron and reed straw at this time：1, it is placed in Muffle furnace at 350 DEG C and is pyrolyzed 2 h.After take out crucible
It is cooled to room temperature, it is neutrality that taking-up, which is washed with deionized water to filtrate, is placed in baking oven and dries 6 h, that is, prepares modified reed life of tapping a blast furnace
Object charcoal B.
Embodiment three：
It weighs 10 g to be put into crucible by pretreated reed straw, a concentration of 1 molL of 50 mL is added-1FeCl3
Solution, the mass ratio 0.28 of iron and reed straw at this time：1, it is placed in Muffle furnace at 350 DEG C and is pyrolyzed 3 h.After take out crucible
It is cooled to room temperature, it is neutrality that taking-up, which is washed with deionized water to filtrate, is placed in baking oven and dries 6 h, that is, prepares modified reed life of tapping a blast furnace
Object charcoal C.
Example IV：
It weighs 10 g to be put into crucible by pretreated reed straw, a concentration of 1 molL of 50 mL is added-1FeCl3
Solution, the mass ratio 0.28 of iron and reed straw at this time：1, it is placed in Muffle furnace at 250 DEG C and is pyrolyzed 2 h.After take out crucible
It is cooled to room temperature, it is neutrality that taking-up, which is washed with deionized water to filtrate, is placed in baking oven and dries 8 h, that is, prepares modified reed life of tapping a blast furnace
Object charcoal D.
Embodiment five：
It weighs 10 g to be put into crucible by pretreated reed straw, a concentration of 1 molL of 50 mL is added-1FeCl3
Solution, the mass ratio 0.28 of iron and reed straw at this time：1, it is placed in Muffle furnace at 250 DEG C and is pyrolyzed 3 h.After take out crucible
It is cooled to room temperature, it is neutrality that taking-up, which is washed with deionized water to filtrate, is placed in baking oven and dries 8 h, that is, prepares modified reed life of tapping a blast furnace
Object charcoal E.
Embodiment six：
It weighs 10 g to be put into crucible by pretreated reed straw, a concentration of 1 molL of 50 mL is added-1FeCl3
Solution, the mass ratio 0.28 of iron and reed straw at this time：1, it is placed in Muffle furnace at 450 DEG C and is pyrolyzed 2 h.After take out crucible
It is cooled to room temperature, it is neutrality that taking-up, which is washed with deionized water to filtrate, is placed in baking oven and dries 8 h, that is, prepares modified reed life of tapping a blast furnace
Object charcoal F.
Embodiment seven：
It weighs 10 g to be put into crucible by pretreated reed straw, a concentration of 0.5 molL of 50 mL is added-1's
FeCl3Solution, the mass ratio 0.14 of iron and reed straw at this time：1, it is placed in Muffle furnace at 350 DEG C and is pyrolyzed 2 h.After take
Go out crucible to be cooled to room temperature, it is neutrality that taking-up, which is washed with deionized water to filtrate, is placed in baking oven and dries 10 h, that is, prepares modification of tapping a blast furnace
Reed charcoal G.
Embodiment eight：
It weighs 10 g to be put into crucible by pretreated reed straw, a concentration of 0.75 molL of 50 mL is added-1's
FeCl3Solution, the mass ratio 0.21 of iron and reed straw at this time：1, it is placed in Muffle furnace at 350 DEG C and is pyrolyzed 2 h.After take
Go out crucible to be cooled to room temperature, it is neutrality that taking-up, which is washed with deionized water to filtrate, is placed in baking oven and dries 10 h, that is, prepares modification of tapping a blast furnace
Reed charcoal H.
Embodiment nine：
It weighs 10 g to be put into crucible by pretreated reed straw, a concentration of 1.125 molL of 50 mL is added-1's
FeCl3Solution, the mass ratio 0.315 of iron and reed straw at this time：1, it is placed in Muffle furnace at 350 DEG C and is pyrolyzed 2 h.After take
Go out crucible to be cooled to room temperature, it is neutrality that taking-up, which is washed with deionized water to filtrate, is placed in baking oven and dries 10 h, that is, prepares modification of tapping a blast furnace
Reed charcoal I.
Embodiment ten：
It weighs 10 g to be put into crucible by pretreated reed straw, a concentration of 1.25 molL of 50 mL is added-1's
FeCl3Solution, the mass ratio 0.35 of iron and reed straw at this time：1, it is placed in Muffle furnace at 350 DEG C and is pyrolyzed 2 h.After take
Go out crucible to be cooled to room temperature, it is neutrality that taking-up, which is washed with deionized water to filtrate, is placed in baking oven and dries 10 h, that is, prepares modification of tapping a blast furnace
Reed charcoal J.
Embodiment 11：
It weighs 10 g to be put into crucible by pretreated reed straw, a concentration of 1.5 molL of 50 mL is added-1's
FeCl3Solution, the mass ratio 0.42 of iron and reed straw at this time：1, it is placed in Muffle furnace at 350 DEG C and is pyrolyzed 2 h.After take
Go out crucible to be cooled to room temperature, it is neutrality that taking-up, which is washed with deionized water to filtrate, is placed in baking oven and dries 10 h, that is, prepares modification of tapping a blast furnace
Reed charcoal K.
Effect example 1：
The oxide for adsorbent the reed biology carbon surface and hole load iron that the present invention is prepared, with the phosphate radical in water body
It is combined generation precipitation by chemical bond, to achieve the effect that dephosphorization.Most common iron oxide type is goethite
（FeOH）, bloodstone（Fe2O3）And indefinite form iron hydroxide, the adhesive strength of bloodstone and reed charcoal than goethite and
Unformed iron hydroxide higher, Fig. 1 is the XRD spectra that the iron that the present invention is prepared is modified reed charcoal, wherein there is Fe2O3
Characteristic peak illustrates that modified iron oxide mainly exists in the form of bloodstone.In conjunction with Fig. 2 as can be seen that modified reed charcoal exists
810.23 cm-1The absorption peak that place occurs is the characteristic absorption peak of Fe-O, 470.33 cm-1The absorption peak of appearance is attributed to Fe-O's
Stretching vibration, the oxide for further demonstrating the iron being supported on reed charcoal are existed in the form of bloodstone.
Reed charcoal is modified to the iron that the present invention is prepared and is scanned electron microscope observation, as shown in figure 3, not
Modified reed straw（Fig. 3-A）With big specific surface area, provide abundant place for load iron, and pore interior and
Surface is very smooth, is barely perceivable any impurity.And the modification reed charcoal after iron is loaded modified（Fig. 3-B）'s
Hole port and surface become more coarse because being covered by iron, and surface, which occurs one layer, apparent has the solid of fold tightly viscous
It is attached to the surface of modified reed charcoal, has further demonstrated that the reed that iron oxide has successfully loaded to during calcining
Biological carbon surface, and combine very secured.Since a large amount of iron is supported in hole so that aperture reduces, and can see
Go out the presence for also having iron in pore interior, due to the special pore structure of reed charcoal, increases iron and reed charcoal
Contact area and load capacity.
Dephosphorization adsorbent obtained by various embodiments of the present invention is tested for the property, test method is as follows:
The iron for weighing 0.05 g respectively is modified reed charcoal A, B, C, D, E, F to 50 mL initial concentrations C0For 4 mgL-1's
In phosphate solution, it is 7 to adjust pH value of solution, and 25 DEG C, 120 rmin are kept in constant temperature oscillator-1Vibrate 24 h.Afterwards quickly
It filters, measures phosphoric residue concentration Ce, calculate adsorbance qe.The performance test results are shown in Table 1.
The iron for weighing 0.04 g respectively is modified reed charcoal G, H, I, J, K to 50 mL initial concentrations C0For 4mgL-1's
In phosphate solution, it is 7 to adjust pH value of solution, and 25 DEG C, 120 rmin are kept in constant temperature oscillator-1Vibrate 24 h.Afterwards quickly
It filters, measures phosphoric residue concentration Ce, calculate adsorbance qe.The performance test results are shown in Table 2.
The content of total phosphorus uses ammonium molybdate spectrophotometric method in solution（GB 11893-89）It is measured analysis, adsorbance
It calculates according to the following formula
In formula, qeFor equilibrium adsorption capacity, mgg-1；c0And ceThe concentration of phosphorus solution, mgL when respectively initial and adsorption equilibrium-1；V is the volume of adsorbent solution, L；M is the quality for adding adsorbent, g.
The performance test results of each adsorption and dephosphorization agent in 1 embodiment one to six of table
The performance test results of each adsorption and dephosphorization agent in 2 embodiment seven to 11 of table
Effect example 2：
In order to investigate performance of the adsorbent for eutrophication water dephosphorization, the adsorbent prepared using embodiment nine removes certain
Phosphorus in sludge with high silver.The adsorbent different quality for weighing the preparation of embodiment nine, is respectively placed in 1000 mL conical flask with cover
In, the river water of the practical eutrophication of 400 mL, 0.603 mgL of river water TP concentration is added-1, pH 6.83, be placed in constant temperature and shake
Swing 25 DEG C, 120 rmin of holding in device-1It is filtered after vibrating 24 h, measures remaining phosphorus concentration.Rapid filtration under suction afterwards measures phosphoric residue
Concentration Ce, calculate adsorbance qe.The performance test results are shown in Table 3.
3 embodiment of table, nine adsorbent removes the performance test results of phosphorus in sludge with high silver
By table 3 as it can be seen that the adsorbent can effectively remove phosphorus in sludge with high silver, the eutrophication journey of water body can be significantly improved
Degree.
Claims (10)
1. a kind of adsorbent being used for phosphorus-containing wastewater or eutrophication water dephosphorization, it is characterised in that：The adsorbent uses iron
Modified reed charcoal, the load capacity of iron is 46.30 mgg thereon-1~115.80 mgg-1。
2. adsorbent according to claim 1, it is characterised in that：The load capacity of iron is 86.5 mgg in the adsorbent-1~115.80 mgg-1。
3. the preparation method of adsorbent described in claims 1 or 2, which is characterized in that include the following steps：
（1）Taking clean reed straw to put in an oven, drying to constant weight in 85~105 DEG C, and it is about 0.5 that taking-up, which shreds into length,
The segment of~1 cm；
（2）By（1）10 g of reed straw that segment is broken into step is filled in crucible, and 50 mL ferric chloride solutions are added, and keeps
Iron reed straw mass ratio is 0.14~0.56:1, it is placed in Muffle furnace and is pyrolyzed, pyrolysis temperature is 200~500 DEG C, heating
Speed is 15 DEG C of min-1, keep 1~4 h；A concentration of 0.5 molL of the ferric chloride solution-1~1.5 molL-1；
（3）By（2）Crucible is taken out in step after the completion of pyrolysis to be cooled to room temperature to get the adsorbent.
4. preparation method according to claim 3, which is characterized in that a concentration of 0.75 mol of the ferric chloride solution
L-1~1.25 molL-1；The pyrolysis temperature is 250~450 DEG C, and pyrolysis time is 1~3 h.
5. preparation method according to claim 4, which is characterized in that a concentration of the 1.125 of the ferric chloride solution
mol·L-1；The pyrolysis temperature is 350 DEG C, and pyrolysis time is 2 h.
6. preparation method according to claim 5, which is characterized in that the step（3）After pyrolysis is cooling, deionized water is used
It is neutrality to be washed till filtrate, is placed in baking oven and dries 6~12 h to get the adsorbent.
7. preparation method according to claim 6, which is characterized in that the reed straw that the reed straw takes jaundice withered
Stalk is washed with deionized water surface dirt, then is dried.
8. adsorbent described in claims 1 or 2 is in terms of for adsorption of Low Concentration phosphorus-containing wastewater or eutrophication water dephosphorization
Using.
9. according to the application required described in 8, it is characterised in that：When carrying out low-concentration phosphorus-containing wastewater dephosphorization, the Phosphorus From Wastewater
Concentration be no more than 4 mgL-1, adsorbent amount is 0.8-1.0 gL-1。
10. application according to claim 8, it is characterised in that：When carrying out eutrophication water dephosphorization, the adsorbent
Dosage be 0.05-0.25 gL-1。
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109534432A (en) * | 2018-12-17 | 2019-03-29 | 长江水利委员会长江科学院 | The preparation method of the biological carbon modified material of phosphorus in a kind of removal eutrophication water |
| CN110102256A (en) * | 2019-04-22 | 2019-08-09 | 中国科学院东北地理与农业生态研究所 | A kind of preparation method and applications of Fe modification biological carbon composite |
| CN112090404A (en) * | 2020-09-15 | 2020-12-18 | 辽宁大学 | Preparation method of modified corn straw biochar and application of modified corn straw biochar in phosphorus-containing wastewater |
| CN112110769A (en) * | 2019-06-19 | 2020-12-22 | 日商藤田股份有限公司 | Fertilizer |
| CN113499759A (en) * | 2021-06-28 | 2021-10-15 | 山东理工大学 | FeOH @ MSN-PDMAEMA nano adsorbent with core-shell structure |
| CN114958382A (en) * | 2022-03-17 | 2022-08-30 | 中南大学 | Carbon-based soil curing material, preparation thereof and application thereof in heavy metal contaminated soil remediation |
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| WO1999048811A1 (en) * | 1998-03-26 | 1999-09-30 | Association Gradient | Method for making activated carbon with ferromagnetic properties, and activated carbon obtained by said method |
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