CN107159097B - The efficiently granule adsorbent and methods for making and using same of removal Phosphorus From Wastewater - Google Patents
The efficiently granule adsorbent and methods for making and using same of removal Phosphorus From Wastewater Download PDFInfo
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- CN107159097B CN107159097B CN201611044981.5A CN201611044981A CN107159097B CN 107159097 B CN107159097 B CN 107159097B CN 201611044981 A CN201611044981 A CN 201611044981A CN 107159097 B CN107159097 B CN 107159097B
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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
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
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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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
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Abstract
The invention belongs to the secondary preparation technical fields of trade waste recycling, it is related to the granule adsorbent and methods for making and using same of a kind of efficiently removal Phosphorus From Wastewater, it is (4-10) in mass ratio which, which is by aluminium sludge, flyash, bentonite and excess sludge: (0.5-4): (0.5-4): the ratio of (1-5) is prepared.The granule adsorbent of efficient removal Phosphorus From Wastewater provided by the present invention is prepared according to a certain ratio by aluminium sludge, flyash, bentonite and excess sludge, the P elements in water body can be efficiently removed, to eliminate water eutrophication.The present invention provides one kind can effectively improve dephosphorization efficiency, can further decrease water eutrophication and the granule adsorbent and methods for making and using same of low-cost efficient removal Phosphorus From Wastewater.
Description
Technical field
The invention belongs to the secondary preparation technical fields of trade waste recycling, are related to a kind of heat modification aluminium mud granule suction
The preparation and application of attached dose (Thermal Modified Aluminium Sludge abbreviation: TMAS), more particularly to it is a kind of
Efficiently the granule adsorbent and methods for making and using same of removal Phosphorus From Wastewater, the granule adsorbent for efficiently removing Phosphorus From Wastewater are
It is prepared according to a certain ratio by aluminium sludge, flyash, bentonite and excess sludge, can efficiently remove the phosphorus member in water body
Element, to eliminate water eutrophication.
Background technique
In recent years, as the fast development of industrial or agricultural, water environment pollution problem are got worse, phosphorus content increases in water, phosphorus
As a kind of non-renewable resource, usually when the total phosphorus concentration in water body is more than 0.02mg/L, then the water body is in water body richness
Nutrient laden state, and can cause if total phosphorus in water concentration is more than 0.05mg/L, if under suitable growth conditions algae and
The undue growth of certain water plants makes ocean that red tide occur, causes water eutrophication to make fresh water that wawter bloom occur.
Currently, the method for dephosphorization mainly includes the modes such as bioanalysis, chemical method and physisorphtion.But these methods exist
Removal effect is not satisfactory in practical application, and expense is excessively high, does not get a desired effect.
Secondly, aluminium sludge material often exists in the form of a powder under study for action, but dusty material is in water treatment procedure
In be often difficult to separate, it is difficult to recycle, and be easy to cause the obstruction of equipment.
Some researches show that dehydration aluminium sludge has certain Adsorption ability, and aluminium Treatment of Sludge to the phosphorus in water
The method of phosphorus-containing wastewater is more and more common, and removal effect is unsatisfactory in practical applications and restricts vulnerable to various factors.This hair
Bright not only to prepare a kind of particle aluminium sludge, dephosphorization efficiency is high, and particle is not easy to plug, low in cost, and obtains aluminium sludge
Resource utilization, can reach the purpose of the treatment of wastes with processes of wastes against one another.
Summary of the invention
In order to solve the above problem present in background technique, the present invention provides one kind can effectively improve dephosphorization efficiency,
Water eutrophication and the low-cost efficient granule adsorbent for removing Phosphorus From Wastewater and preparation can be further decreased and answered
Use method.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of granule adsorbent of efficient removal Phosphorus From Wastewater, it is characterised in that: of the efficient removal Phosphorus From Wastewater
It is (4-10) in mass ratio that grain adsorbent, which is by aluminium sludge, flyash, bentonite and excess sludge: (0.5-4): (0.5-
4): the ratio of (1-5) is prepared.
The granule adsorbent of above-mentioned efficient removal Phosphorus From Wastewater is by aluminium sludge, flyash, bentonite and excess sludge
Be in mass ratio (4-8): (0.6-3): (1-3): the ratio of (2-4) is prepared.
The granule adsorbent of above-mentioned efficient removal Phosphorus From Wastewater is by aluminium sludge, flyash, bentonite and excess sludge
Be in mass ratio (6-8): (1-2): (1-2): the ratio of (2-4) is prepared.Aluminium sludge has adsorption and dephosphorization performance, fine coal
Ash is used as particle reinforcements, and bentonite is as binder, and excess sludge is as foaming agent.
A method of being used to prepare the granule adsorbent of efficiently removal Phosphorus From Wastewater as described above, it is characterised in that:
It the described method comprises the following steps:
1) the aluminium sludge obtained from water treatment plant is dried with electric heating constant-temperature blowing drying box, utilizes grinder grind into powder
And sieve with 100 mesh sieve, obtain powdered aluminium sludge raw material, partial size < 0.15mm of the powdered aluminium sludge raw material；The powder
The partial size of the flyash of last shape, bentonite and excess sludge < 0.15mm；The excess sludge is that city sewage plant is living
From the activated sludge outside secondary sedimentation tank discharge system in property sludge system；
2) the powdered aluminium sludge raw material for obtaining step 1) is dried under the conditions of 90 DEG C -110 DEG C；
It 3) will be mixed by proportion above-mentioned by step 2) treated aluminium sludge, bentonite, flyash and excess sludge
Conjunction forms mixture, and volume ratio is 1:(2-8 by weight in the mixture) ratio be added deionized water be stirred uniformly,
It is formed and has sticking mixture；
4) the sticking mixture of tool that step 3) is prepared is prepared into the round shaped grain that diameter is 1-2mm；The diameter
Round shaped grain for 1-2mm is raw material；
5) raw material that step 4) is prepared are dried, and the drying temperature when drying process is (80
DEG C -100 DEG C), drying time is 2h -4h；
6) raw material after drying are placed in Muffle furnace and carry out the pre-heat treatment；The temperature of the pre-heat treatment is 250
DEG C-450 DEG C, the time of the pre-heat treatment is 10-30min；
7) raw material after the pre-heat treatment are roasted, the temperature of the roasting is 800 DEG C -1100 DEG C, described pre-
The time of heat treatment is 2-11min；
8) granule adsorbent for efficiently removing Phosphorus From Wastewater is obtained when being cooled to 25 ± 2 DEG C；In the efficient removal waste water
The partial size of the granule adsorbent of phosphorus is 1-2mm；It is described it is efficient removal Phosphorus From Wastewater granule adsorbent rough surface and have micro-
Small gap.
A kind of application method for going dephosphorization of the granule adsorbent based on efficiently removal Phosphorus From Wastewater as described above, it is special
Sign is: it the described method comprises the following steps:
1) adsorbent solution is configured；The adsorbent solution is will to weigh and the KH that drying to constant weight2PO 4Match with deionized water
Phosphorus solution made of setting (simulation phosphorus-containing wastewater)；Concentration >=50mg/L of the phosphorus solution；
2) that the granule adsorbent of the efficient removal Phosphorus From Wastewater of above-mentioned preparation is placed in the obtained absorption of step 1) configuration is molten
In liquid, processing sample is formed；The granule adsorbent of the efficient removal Phosphorus From Wastewater and the w/v of adsorbent solution are 1:
40g/mL；
3) processing sample is placed in Desk type constant-temperatureoscillator oscillator, is 25 ± 2 DEG C, shakes under the revolving speed of 120r/min in temperature range
Swing 4h -6h；
4) processing sample is centrifuged on supercentrifuge；The condition of the centrifugation be temperature range be 25 ± 2 DEG C,
Revolving speed, the centrifugation time of 10000rpm is 10min；Supernatant and non-supernatant are obtained after centrifugation, take supernatant 50mL；
5) supernatant for obtaining step 4) is placed in colorimetric cylinder, and color developing agent is added, and develop the color 10-15min, using phosphorus molybdenum
Blue colorimetric method is measured the absorbance value of processing sample, while the extinction for obtaining measurement using phosphorus standard curve at 880nm
Angle value is converted into the concentration of phosphoric residue in adsorbent solution.
The invention has the advantages that
The present invention provides the granule adsorbents and preparation and application of a kind of efficiently removal Phosphorus From Wastewater, by Industry Waste
The method of gurry aluminium recycling sludge application processing water systems'phosphorus；The mainly secondary use of solid waste will not generate secondary
Pollution, manufacturing cost are cheap；Processing cost is low, and preparation method is simple (preparing under normal temperature and pressure)；The present invention by by aluminium sludge,
Bentonite, flyash and excess sludge roast according to a certain ratio is made heat modification aluminium mud granule adsorbent, in which: aluminium sludge is
The solid waste that city tap-water factory coagulative precipitation tank generates, mainly contains the elements such as Al, Ca, Fe, Mg, Si, phosphorus in Yi Yushui
Adsorption and ion exchange reaction occurs, to remove Phosphorus From Wastewater element.Flyash is the work that power plant soot dedusting generates
Industry solid waste, particle is tiny, has very big surface area, and main component contains the elements such as Si, Ca, Fe, is easy to roasting particle,
Also there is good absorption property simultaneously.Excess sludge is municipal wastewater treatment plant secondary sedimentation tank product, contains a large amount of organic matters, roasting
It is easy to generate CO after burning2, so that the porosity of material be made to increase, increase material surface area and absorption property.Bentonite has viscous
Conjunction property, the above material can be sticked together to form graininess, increase the granularity and intensity of material.Again with heat modification aluminium sludge
Grain adsorbent is research object, can be used to preferably processing phosphorus-containing wastewater for heat modification aluminium mud granule adsorbent and provide technique
Technical basis.The present invention is by the mutual synergistic effects of above-mentioned several raw material, so that comprehensive dephosphorization rate reaches 95% or more.
Specific embodiment
The present invention provides a kind of granule adsorbents of efficiently removal Phosphorus From Wastewater, this efficiently removes the particle of Phosphorus From Wastewater
It is (4-10) in mass ratio that adsorbent, which is by aluminium sludge, flyash, bentonite and excess sludge: (0.5-4): (1-4):
The ratio of (1-4) is prepared.
Preferably, the granule adsorbent of efficient removal Phosphorus From Wastewater provided by the invention is by aluminium sludge, flyash, swollen
Profit soil and excess sludge are (4-8) in mass ratio: (0.6-3): (1-3): the ratio of (2-4) is prepared；More preferably
, the granule adsorbent of efficient removal Phosphorus From Wastewater provided by the present invention is by aluminium sludge, flyash, bentonite and residue
Sludge is (6-8) in mass ratio: (0.8-2): (1-2): the ratio of (3-4) is prepared.
Multiple embodiments efficient granular absorption of removal Phosphorus From Wastewater provided by the present invention will be described in detail will be passed through below
The preparation method of agent:
A kind of embodiment 1: preparation method of the granule adsorbent of efficiently removal Phosphorus From Wastewater, comprising the following steps:
1) the aluminium sludge come will be fetched from water treatment plant, dried with electric heating constant-temperature blowing drying box, by the aluminium sludge after drying
It using grinder grind into powder and sieves with 100 mesh sieve, powdered aluminium sludge raw material, partial size < 0.15mm, by it is obtained after sieving
2h is dried at 105 DEG C to drying.The powdered aluminum sludge is used to prepare activation aluminium mud granule, system as primary attachment material
The auxiliary material of standby aluminium mud granule is bentonite, flyash and excess sludge.Meanwhile to ensure that three kinds of raw materials uniformly cooperate,
Required bentonite, flyash and excess sludge are also powdered in test.
2) ratio that aluminium sludge, bentonite, flyash and excess sludge are 6:1:1:4 in mass ratio is mixed into tool
Sticking mixture, it is stand-by to be prepared into the round shaped grain that diameter is 1-2mm, referred to as raw material.
3) it in order to make raw material be mixed into particle in granulation process, 5 parts of deionized waters is added is stirred and be prepared into particle,
Be that raw material is avoided to rupture before high-temperature roasting, first raw material are dried, i.e., dry in an oven (T is 80 DEG C,
Time is 2h).
4) raw material after drying are placed in Muffle furnace and carry out the pre-heat treatment；The temperature of the pre-heat treatment is 300
DEG C, the time of the pre-heat treatment is 20min；
5) raw material after the pre-heat treatment are roasted, the temperature of the roasting is 1100 DEG C, the pre-heat treatment
Time be 8min；
6) particle after roasting is taken out inside Muffle furnace, for efficiently removing Phosphorus From Wastewater is obtained after being cooled to room temperature
Grain adsorbent.After firing, about 1-2mm of obtained granular size, rough surface has small gap.
7) in 80mL centrifuge tube, the initial concentration that preparation is added is the modified aluminium mud granule for taking 1 part of 1.5g to roast
The phosphorus solution 60mL of 50mg/L, centrifuge tube is placed in Desk type constant-temperatureoscillator oscillator, and setting temperature is 25 DEG C, with turning for 120r/min
Speed oscillation 4h.It is again 10000rpm with supercentrifuge setting speed, temperature is 25 DEG C, time 10min, to the water sample of reaction
It is centrifuged.It takes its supernatant 50mL to be placed in colorimetric cylinder, color developing agent 8mL is added, develop the color 15min, finally in ultraviolet spectrometry light
Colorimetric under degree meter 880nm, records and calculates product dephosphorizing rate.
8) examination and test of products situation in this example adsorbs 50mg/L phosphorus solution with the product, and the removal rate of phosphorus is 96.1%.
A kind of embodiment 2: preparation method of the granule adsorbent of efficiently removal Phosphorus From Wastewater, comprising the following steps:
1) the aluminium sludge come will be fetched from water treatment plant, dried with electric heating constant-temperature blowing drying box, be ground into using grinder
Powder simultaneously sieves with 100 mesh sieve, and powdered aluminium sludge raw material is obtained after sieving, it is dried 2h extremely at 105 DEG C by partial size < 0.15mm
It is dry.The powdered aluminum sludge is used to prepare activation aluminium mud granule, prepares the auxiliary of aluminium mud granule as primary attachment material
Helping material is bentonite, flyash and excess sludge.It is required swollen in test meanwhile to ensure that three kinds of raw materials uniformly cooperate
Profit soil, flyash and excess sludge are also powdered.
2) ratio that aluminium sludge, bentonite, flyash and excess sludge are 8:1:1:2 in mass ratio is mixed into tool
Sticking mixture, it is stand-by to be prepared into the round shaped grain that diameter is 1-2mm, referred to as raw material.
3) it in order to make raw material be mixed into particle in granulation process, 5 parts of deionized waters is added is stirred and be prepared into particle,
Be that raw material is avoided to rupture before high-temperature roasting, first raw material are dried, i.e., dry in an oven (T is 80 DEG C,
Time is 2h).
4) raw material after drying are placed in Muffle furnace and carry out the pre-heat treatment；The temperature of the pre-heat treatment is 300
DEG C, the time of the pre-heat treatment is 5min；
5) raw material after the pre-heat treatment are roasted, the temperature of the roasting is 1100 DEG C, the calcination process
Time be 5min；
6) particle after roasting is taken out inside Muffle furnace, for efficiently removing Phosphorus From Wastewater is obtained after being cooled to room temperature
Grain adsorbent.After firing, about 1-2mm of obtained granular size, rough surface has small gap.
7) in 80mL centrifuge tube, the initial concentration that preparation is added is the modified aluminium mud granule for taking 1 part of 1.5g to roast
The phosphorus solution 60mL of 50mg/L, centrifuge tube is placed in Desk type constant-temperatureoscillator oscillator, and setting temperature is 25 DEG C, with turning for 120r/min
Speed oscillation 4h.It is again 10000rpm with supercentrifuge setting speed, temperature is 25 DEG C, and the time is water sample of the 10min to reaction
It is centrifuged.It takes its supernatant 50mL to be placed in colorimetric cylinder, color developing agent 8mL is added, develop the color 15min, finally in ultraviolet spectrometry light
It is detected under degree meter 880nm, records and calculates product dephosphorizing rate.
8) examination and test of products situation in this example adsorbs 50mg/L phosphorus solution with the product, and the removal rate of phosphorus is 95.6%.
Embodiment 3: the dephosphorization under different phosphorus concentrations using the granule adsorbent of efficiently removal Phosphorus From Wastewater to phosphorus-containing wastewater
Experiment, comprising the following steps:
1) the aluminium sludge come will be fetched from water treatment plant, dried with electric heating constant-temperature blowing drying box, by the aluminium sludge after drying
It using grinder grind into powder and sieves with 100 mesh sieve, powdered aluminium sludge raw material, partial size < 0.15mm, by it is obtained after sieving
2h is dried at 105 DEG C to drying.The powdered aluminum sludge is used to prepare activation aluminium mud granule, system as primary attachment material
The auxiliary material of standby aluminium mud granule is bentonite, flyash and excess sludge.Meanwhile to ensure that three kinds of raw materials uniformly cooperate,
Required bentonite, flyash and excess sludge are also powdered in test.
2) ratio that aluminium sludge, bentonite, flyash and excess sludge are 8:2:1:2 in mass ratio is mixed into tool
Sticking mixture, it is stand-by to be prepared into the round shaped grain that diameter is 1-2mm, referred to as raw material.
3) it in order to make raw material be mixed into particle in granulation process, 7 parts of deionized waters is added is stirred and be prepared into particle,
Be that raw material is avoided to rupture before high-temperature roasting, first raw material are dried, i.e., dry in an oven (T is 80 DEG C,
Time is 2h).
4) raw material after drying are placed in Muffle furnace and carry out the pre-heat treatment；The temperature of the pre-heat treatment is 300
DEG C, the time of the pre-heat treatment is 20min；
5) raw material after the pre-heat treatment are roasted, the temperature of the roasting is 1100 DEG C, the pre-heat treatment
Time be 8min；
6) particle after roasting is taken out inside Muffle furnace, for efficiently removing Phosphorus From Wastewater is obtained after being cooled to room temperature
Grain adsorbent.After firing, obtained granular size about 1-2mm, rough surface has small gap.
7) it is 5,10,20,40,50,60,80,100mg/L that phosphorus solution concentration, which is respectively configured,.It is dirty to weigh 8 parts of 4g heat modification aluminium
Mud granule adsorbent is added separately in the phosphorus solution for the various concentration that 60mL pH is 6.0, carries out bulge test.In room temperature
4h is vibrated with 120r/min under the conditions of (25 DEG C), is then centrifuged (10000rpm, 10min) with supercentrifuge.After centrifugation, take
The color developing agent that 8mL is prepared is added in colorimetric cylinder in clear liquid 50mL, stands 15min.Finally at ultraviolet specrophotometer 880nm
Colorimetric records and calculates product dephosphorizing rate.Data such as table 1.
Dephosphorizing rate of the TMAS to phosphorus-containing wastewater under the different phosphorus concentrations of table 1
| Phosphorus initial concentration (mg/L) | 5 | 10 | 20 | 40 | 50 | 60 | 80 | 100 |
| Remaining phosphorus concentration (mg/L) | 0.51 | 0.72 | 0.89 | 1.09 | 0.78 | 0.96 | 1.03 | 1.03 |
| Dephosphorizing rate (%) | 89.8 | 92.8 | 95.6 | 97.3 | 98.4 | 98.4 | 98.7 | 99.0 |
Embodiment 4: phosphorus-containing wastewater is removed using the granule adsorbent of efficiently removal Phosphorus From Wastewater under different times of contact
Phosphorus experiment, comprising the following steps:
1) the aluminium sludge come will be fetched from water treatment plant, dried with electric heating constant-temperature blowing drying box, by the aluminium sludge after drying
It using grinder grind into powder and sieves with 100 mesh sieve, powdered aluminium sludge raw material, partial size < 0.15mm, by it is obtained after sieving
2h is dried at 105 DEG C to drying.The powdered aluminum sludge is used to prepare activation aluminium mud granule, system as primary attachment material
The auxiliary material of standby aluminium mud granule is bentonite, flyash and excess sludge.Meanwhile to ensure that three kinds of raw materials uniformly cooperate,
Required bentonite, flyash and excess sludge are also powdered in test.
2) ratio that aluminium sludge, bentonite, flyash and excess sludge are 8:2:1:2 in mass ratio is mixed into tool
Sticking mixture, it is stand-by to be prepared into the round shaped grain that diameter is 1-2mm, referred to as raw material.
3) it in order to make raw material be mixed into particle in granulation process, 7 parts of deionized waters is added is stirred and be prepared into particle,
Be that raw material is avoided to rupture before high-temperature roasting, first raw material are dried, i.e., dry in an oven (T is 80 DEG C,
Time is 2h).
4) raw material after drying are placed in Muffle furnace and carry out the pre-heat treatment；The temperature of the pre-heat treatment is 300
DEG C, the time of the pre-heat treatment is 20min；
5) raw material after the pre-heat treatment are roasted, the temperature of the roasting is 1100 DEG C, the pre-heat treatment
Time be 8min；
6) particle after roasting is taken out in Muffle furnace, the particle for efficiently removing Phosphorus From Wastewater is obtained after being cooled to room temperature
Adsorbent.After firing, about 1-2mm of obtained granular size, rough surface has small gap.
7) 8 parts of 4g heat modification aluminium mud granule adsorbents are weighed, it is 50.00mg/ that be added separately to pH, which be 6.0 initial concentrations,
In the 60mL phosphorus solution of L, bulge test is carried out.Vibrate with 120r/min 1 respectively under the conditions of room temperature (25 DEG C), 2,3,4,5,6,
7, then 8h is centrifuged (10000rpm, 10min) with supercentrifuge.It after centrifugation, takes 50mL supernatant in colorimetric cylinder, is added
The color developing agent that 8mL is prepared stands 15min, finally uses ultraviolet specrophotometer colorimetric at 880nm, records and calculates product and remove
Phosphorus rate.Data such as table 2.
TMAS is to phosphorus-containing wastewater dephosphorizing rate under the different times of contact of table 2
| Time of contact (h) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Phosphorus initial concentration (mg/L) | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| Remaining phosphorus concentration (mg/L) | 1.2 | 1.06 | 1.17 | 1.12 | 1.08 | 0.78 | 0.77 | 0.82 |
| Dephosphorizing rate (%) | 97.6 | 97.9 | 97.7 | 97.8 | 97.8 | 98.4 | 98.5 | 98.4 |
Embodiment 5: testing the dephosphorization of phosphorus-containing wastewater using the granule adsorbent of efficiently removal Phosphorus From Wastewater under different pH,
The following steps are included:
1) the aluminium sludge come will be fetched from water treatment plant, dried with electric heating constant-temperature blowing drying box, by the aluminium sludge after drying
It using grinder grind into powder and sieves with 100 mesh sieve, powdered aluminium sludge raw material, partial size < 0.15mm, by it is obtained after sieving
2h is dried at 105 DEG C to drying.The powdered aluminum sludge is used to prepare activation aluminium mud granule, system as primary attachment material
The auxiliary material of standby aluminium mud granule is bentonite, flyash and excess sludge.Meanwhile to ensure that three kinds of raw materials uniformly cooperate,
Required bentonite, flyash and excess sludge are also powdered in test.
2) ratio that aluminium sludge, bentonite, flyash and excess sludge are 8:2:1:2 in mass ratio is mixed into tool
Sticking mixture, it is stand-by to be prepared into the round shaped grain that diameter is 1-2mm, referred to as raw material.
3) it in order to make raw material be mixed into particle in granulation process, 7 parts of deionized waters is added is stirred and be prepared into particle,
Be that raw material is avoided to rupture before high-temperature roasting, first raw material are dried, i.e., dry in an oven (T is 80 DEG C,
Time is 2h).
4) raw material after drying are placed in Muffle furnace and carry out the pre-heat treatment；The temperature of the pre-heat treatment is 300
DEG C, the time of the pre-heat treatment is 20min；
5) raw material after the pre-heat treatment are roasted, the temperature of the roasting is 1100 DEG C, the pre-heat treatment
Time be 8min；
6) particle after roasting is taken out inside Muffle furnace, for efficiently removing Phosphorus From Wastewater is obtained after being cooled to room temperature
Grain adsorbent.After firing, about 1-2mm of obtained granular size, rough surface has small gap.
7) phosphorus solution that 8 groups of 60mL initial concentrations are 50.00mg/L is measured, it is molten with the hydrochloric acid or sodium hydroxide of 0.1moL/L
Its pH is adjusted to 2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0 by liquid respectively, heat modification aluminium mud granule adsorbent dosage
4g is chosen, is added in the phosphorus solution of different pH value, bulge test is carried out.It is vibrated under the conditions of room temperature (25 DEG C) with 120r/min
Then 4h is centrifuged (10000rpm, 10min) with supercentrifuge.It after centrifugation, takes 50mL supernatant in colorimetric cylinder, 8mL is added
The color developing agent prepared, stands 15min, and the colorimetric at ultraviolet specrophotometer 880nm records and calculates product dephosphorizing rate.Data
Such as table 3.
TMAS is to phosphorus-containing wastewater dephosphorizing rate under 3 difference pH of table
| pH | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Phosphorus initial concentration (mg/L) | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| Remaining phosphorus concentration (mg/L) | 1.18 | 1.21 | 1.15 | 1.14 | 1.27 | 1.04 | 0.54 | 1.34 |
| Dephosphorizing rate (%) | 97.6 | 97.6 | 97.7 | 97.7 | 97.5 | 97.9 | 98.9 | 97.3 |
Embodiment 6: the granule adsorbent dosage of different efficiently removal Phosphorus From Wastewaters tests the dephosphorization of phosphorus-containing wastewater, packet
Include following steps:
1) the aluminium sludge come will be fetched from water treatment plant, dried with electric heating constant-temperature blowing drying box, by the aluminium sludge after drying
It using grinder grind into powder and sieves with 100 mesh sieve, powdered aluminium sludge raw material, partial size < 0.15mm, by it is obtained after sieving
2h is dried at 105 DEG C to drying.The powdered aluminum sludge is used to prepare activation aluminium mud granule, system as primary attachment material
The auxiliary material of standby aluminium mud granule is bentonite, flyash and excess sludge.Meanwhile to ensure that three kinds of raw materials uniformly cooperate,
Required bentonite, flyash and excess sludge are also powdered in test.
2) ratio that aluminium sludge, bentonite, flyash and excess sludge are 8:2:1:2 in mass ratio is mixed into tool
Sticking mixture, it is stand-by to be prepared into the round shaped grain that diameter is 1-2mm, referred to as raw material.
3) it in order to make raw material be mixed into particle in granulation process, 7 parts of deionized waters is added is stirred and be prepared into particle,
Be that raw material is avoided to rupture before high-temperature roasting, first raw material are dried, i.e., dry in an oven (T is 80 DEG C,
Time is 2h).
4) raw material after drying are placed in Muffle furnace and carry out the pre-heat treatment；The temperature of the pre-heat treatment is 300
DEG C, the time of the pre-heat treatment is 20min；
5) raw material after the pre-heat treatment are roasted, the temperature of the roasting is 1100 DEG C, the pre-heat treatment
Time be 8min；
6) particle after roasting is taken out inside Muffle furnace, for efficiently removing Phosphorus From Wastewater is obtained after being cooled to room temperature
Grain adsorbent.After firing, about 1-2mm of obtained granular size, rough surface has small gap.
7) the heat modification aluminium mud granule adsorbent for weighing 8 parts of respectively 1,2,3,4,5,6,7,8g, is added separately to pH
In the 60mL phosphorus solution for being 50.00mg/L for 6.0 initial concentrations, bulge test is carried out.With 120r/ under the conditions of room temperature (25 DEG C)
Min vibrates 4h, is then centrifuged (10000rpm, 10min) with supercentrifuge.After centrifugation, take 50mL supernatant in colorimetric cylinder
In, the color developing agent that 8mL is prepared is added, stands 15min, finally uses ultraviolet specrophotometer colorimetric at 880nm, record and calculate
Product dephosphorizing rate.Data such as table 4.
Dephosphorizing rate of the dosage of the granule adsorbent of the different efficiently removal Phosphorus From Wastewaters of table 4 to phosphorus-containing wastewater
| Dosage (g) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Phosphorus initial concentration (mg/L) | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| Remaining phosphorus concentration (mg/L) | 1.21 | 1.11 | 0.96 | 0.88 | 1.04 | 0.93 | 0.90 | 0.95 |
| Dephosphorizing rate (%) | 97.6 | 97.8 | 98.1 | 98.2 | 97.9 | 98.2 | 98.2 | 98.1 |
Experimental comparison:
1) 3 kinds experimental material: are prepared according to present invention embodiment 1 above-mentioned, embodiment 2, the method for embodiment 6 respectively
Heat modification aluminium mud adsorbent dephosphorization material, respectively material one, material two, material three, as experimental group material；
2) it takes aluminium sludge to be dried with electric heating constant-temperature blowing drying box again, the aluminium sludge after drying is ground into using grinder
Powder simultaneously sieves with 100 mesh sieve, and powdered aluminium sludge raw material is obtained after sieving, it is dried 2h extremely at 105 DEG C by partial size < 0.15mm
It is dry.General dephosphorization material is obtained, as control material；
3) present invention searches a kind of other approximate dephosphorization techniques: dephosphorization water purification agent technology, the technology by water supply plant aluminium sludge,
Excess sludge and clay (binder) prepare dephosphorization water purification agent by a certain percentage, as control material one, a kind of poly-aluminium
Sludge form dephosphorization material, the material by water supply plant sedimentation basin poly-aluminium sludge, containing zeolite powder, bauxite powder aqueous slurry and
Contain poly- hydrochloride silicate, Fe2(SO4)3, polyacrylic acid amide, mosanom, water-soluble poly ammonium phosphate coagulant press one
Certainty ratio prepares poly-aluminium sludge, as control material two；
4) three each 3 parts of raw material, material one, material two, material for weighing above-mentioned preparation respectively are placed 60mL centrifugation
Processing sample is placed in Desk type constant-temperatureoscillator oscillator by Guan Zhong, is 25 ± 2 DEG C, is vibrated 4h under the revolving speed of 120r/min in temperature range；
Processing sample is centrifuged on supercentrifuge；The condition of centrifugation is that temperature range is 25 ± 2 DEG C, the revolving speed of 10000rpm, centrifugation
Time is 10min；Supernatant is obtained after centrifugation takes supernatant 50mL；Obtained supernatant is placed in colorimetric cylinder, colour developing is added
Agent, develop the color 15min, is measured the absorbance value of processing sample at 880nm using occluded corrosion cell, while utilizing phosphorus standard
Curve converts the absorbance value that measurement obtains to the concentration of phosphoric residue in adsorbent solution, records and calculates product dephosphorizing rate.
The dephosphorization rate of each material of table 5
| Material | Aluminium sludge | Material one | Material two | Material three | Control material one | Control material two |
| Dephosphorizing rate/% | 73.4 | 96.1 | 95.6 | 97.6~98.2 | 90.0 | 84.4 |
5) such as table 5: the result shows that, the molding dephosphorization material is higher than similar dephosphorization material to the removal rate of phosphorus by 6.1%~
24.8%, phosphor-removing effect is significant.TMAS dephosphorization material preparation process prepared by the present invention is simple, low in cost, has particle knot
Structure is not easy to plug, and is removed phosphorus efficiency, and Industrial Solid waste is made to have obtained resource utilization, has been reached the target of the treatment of wastes with processes of wastes against one another.
Claims (3)
1. a kind of granule adsorbent of efficiently removal Phosphorus From Wastewater, it is characterised in that: the particle of the efficient removal Phosphorus From Wastewater
Adsorbent is specifically (4-10) in mass ratio by aluminium sludge, flyash, bentonite and excess sludge: (0.5-4): (0.5-4):
The ratio of (1-5) is prepared by the following method:
1) it is dried from the aluminium sludge that water treatment plant obtains with electric heating constant-temperature blowing drying box, utilizes grinder grind into powder and mistake
100 meshes obtain powdered aluminium sludge raw material, partial size < 0.15mm of the powdered aluminium sludge raw material；By flyash,
Bentonite and excess sludge are also processed into according to same processing mode powdered；The powdered flyash, bentonite with
And excess sludge partial size < 0.15mm；The excess sludge be in activated Sludge System outside secondary sedimentation tank discharge system
Activated sludge；
2) the powdered aluminium sludge raw material for obtaining step 1) is dried under the conditions of 90 DEG C -110 DEG C；
It 3) will treated that aluminium sludge, bentonite, flyash and excess sludge are mixed to form mixing according to the ratio by step 2)
Object, volume ratio is that the ratio addition deionized water of 1:2-8 is stirred uniformly by weight in the mixture, and it is sticking to form tool
Mixture；
4) the sticking mixture of tool that step 3) is prepared is prepared into the round shaped grain that diameter is 1-2mm；The diameter is 1-
The round shaped grain of 2mm is raw material；
5) raw material that step 4) is prepared are dried, and the drying temperature when drying process is 80 DEG C -100
DEG C, drying time is 2h-4h；
6) raw material after being dried are placed in Muffle furnace and carry out the pre-heat treatment；The temperature of the pre-heat treatment is 250
DEG C -450 DEG C, the time of the pre-heat treatment is 10-30min；
7) raw material after the pre-heat treatment are roasted, the temperature of roasting is 800 DEG C -1100 DEG C, the time of calcination process
It is 2-11min；
8) granule adsorbent for efficiently removing Phosphorus From Wastewater is obtained when being cooled to 25 ± 2 DEG C；The efficient removal Phosphorus From Wastewater
The partial size of granule adsorbent is 1-2mm；It is described it is efficient removal Phosphorus From Wastewater granule adsorbent rough surface and have small
Gap.
2. the granule adsorbent of efficient removal Phosphorus From Wastewater according to claim 1, it is characterised in that: the efficient removal
It is (4-8): (0.6- in mass ratio that the granule adsorbent of Phosphorus From Wastewater, which is by aluminium sludge, flyash, bentonite and excess sludge,
3): (1-3): the ratio of (2-4) is prepared.
3. the granule adsorbent of efficient removal Phosphorus From Wastewater according to claim 2, it is characterised in that: the efficient removal
It is (6-8): (1- in mass ratio that the granule adsorbent of Phosphorus From Wastewater, which is by aluminium sludge, flyash, bentonite and excess sludge,
2): (1-2): the ratio of (2-4) is prepared.
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| CN110240216A (en) * | 2019-05-08 | 2019-09-17 | 安徽建筑大学 | A kind of novel ecological environment protection sewage treatment process |
| CN110252240B (en) * | 2019-06-05 | 2022-05-13 | 中国电建集团西北勘测设计研究院有限公司 | Method for preparing phosphorus-containing wastewater adsorbent by roasting aluminum-containing waste residue and application of phosphorus-containing wastewater adsorbent |
| CN112755954A (en) * | 2020-12-29 | 2021-05-07 | 湖南工业大学 | Preparation method and application of nitrogen and phosphorus removal hydroxy aluminum vermiculite sludge particles |
| CN113072127A (en) * | 2021-04-02 | 2021-07-06 | 北京市水科学技术研究院 | Phosphorus removal matrix material and preparation method and application thereof |
| CN115611444A (en) * | 2021-11-22 | 2023-01-17 | 南昌工程学院 | Ecological restoration method for eutrophic water body |
| CN115591527B (en) * | 2021-11-22 | 2024-06-14 | 江西省水利科学院 | Dephosphorization particle adsorbent and preparation method and application thereof |
| CN115180713A (en) * | 2022-06-28 | 2022-10-14 | 西南湿地有限公司 | Efficient phosphorus removal wetland filler and preparation method thereof |
| CN115920826A (en) * | 2022-11-24 | 2023-04-07 | 武汉大学(肇庆)资源与环境技术研究院 | Red mud-based adsorbent and preparation method and application thereof |
| CN117427618B (en) * | 2023-12-20 | 2024-03-05 | 中国农业大学 | Chitosan modified yellow phosphorus slag-bentonite composite material and preparation method and application thereof |
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