CN103801258A - Nickel slag adsorption material applicable to treatment of phosphorus-containing wastewater and preparation method thereof - Google Patents
Nickel slag adsorption material applicable to treatment of phosphorus-containing wastewater and preparation method thereof Download PDFInfo
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- CN103801258A CN103801258A CN201410089441.3A CN201410089441A CN103801258A CN 103801258 A CN103801258 A CN 103801258A CN 201410089441 A CN201410089441 A CN 201410089441A CN 103801258 A CN103801258 A CN 103801258A
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Abstract
The invention discloses a nickel slag adsorption material applicable to treatment of phosphorus-containing wastewater and a preparation method thereof. According to the preparation method, industrial waste nickel slag and low-cost aluminium hydroxide are taken as main raw materials to prepare a renewable nickel slag adsorption material after pre-treating the raw material, pressing for forming, sintering and performing hydro-thermal treatment. The method is simple in process and low in cost. The prepared adsorption material has a series of excellent properties comprising high porosity, great specific surface area and good wastewater phosphorus removing performance. In addition, due to the application of the method for pressing for forming, a prepared adsorbent is various in shapes and sizes and can be made into columns, sheets and blocks; meanwhile, the adsorption material is good in strength and capable of regenerating and recycling the adsorbent; and phosphorus removing experiments prove that the adsorption material is capable of significantly adsorbing the phosphorus element in the wastewater. Through the nickel slag adsorption material applicable to treatment of phosphorus-containing wastewater, the resource utilization of the industrial waste nickel slag is realized; meanwhile, a novel method for developing low-cost adsorbents is provided; and the waste is used for treating pollution, so that the nickel slag adsorption material is good in application prospect.
Description
Technical field
The invention belongs to sorbing material preparation field, relate to comprehensive utilization and the wastewater treating technology of solid waste, be specifically related to a kind of nickel slag sorbing material for treatment of Phosphorus Containing Waste Water and preparation method thereof.
Background technology
Nickel slag is a kind of solid slag producing in metallic nickel and nickel alloy smelting process, a kind of granulated slag that its high-temperature molten forms after shrend, and its melting is with FeO-SiO
2be main, different from the glassy phase composition of common blast-furnace cinder, phosphorus slag, slag and flyash etc., wherein CaO, MgO and Al
2o
3content is much lower, but SiO
2and Fe
2o
3content is high a lot.Nickel slag is a kind of AMAT, contains a small amount of CaO, Al in its amorphous phase
2o
3, thereby under the exciting of alkaline medium, there is the potential hydraulicity, and can generate a large amount of hyrates, form the netted pore structure in space.In addition, the FeO in nickel slag amorphous phase is also a kind of active component, under the effect of alkali, can generate Fe (OH)
2and Fe (OH)
3gel, is filled in the effect that can play support frame in other hydrated product.The existence of these active components, makes nickel slag have potential characterization of adsorption.Due to the fully crystallization of excessive velocities when cooling of the nickel slag after high-temperature fusion, thereby the XRD collection of illustrative plates of nickel slag is buffed top, there is no characteristic diffraction peak.The chemical composition of nickel slag, because of the difference of ore source and smelting process, has larger difference, wherein containing SiO
2be 30 ~ 50wt%, Fe
2o
3be 30 ~ 60 wt %, CaO is 1.5 ~ 5 wt %, and MgO is 1 ~ 15 wt %, Al
2o
3be 2.5 ~ 6 wt %, NiO is 3 ~ 6 wt %.
Luoyuan, Fujian Baosteel moral is contained nickel industry nickel slag annual emissions and is reached more than 200 ten thousand tons, its a large amount of discharge, idlely not only needs land occupation or farmland, and Luoyuan Bay surrounding enviroment have been caused to very large pollution.At present, Baosteel moral is contained project of positive Accelerating The Construction second phase of nickel industry, to forming 3,000,000 tons of above stainless steel production capacity, builds up world-class green stainless steel production base, will produce more substantial waste residue as nickel slag, slag and flyash etc.Therefore, how effectively to dispose and utilize these waste residues just become a problem demanding prompt solution.
Both at home and abroad for the research of nickel slag, mainly concentrate on the useful element extracting wherein and produce building materials and goods etc. at present.But along with the improvement of nickel smelting process, in the waste residue discharging, nickel cobalt equal size is very low, extraction cost is high, do not possess to extract to be worth, and it is also subject to the restriction of some standards in the application of other field.At present, most of nickel slags can only be processed by the mode of landfill, and recovery utilization rate is low.Therefore, strengthen the recycling of nickel slag to remain the emphasis of current research.
Phosphorus is the one of the chief elements that causes body eutrophication, and municipal wastewater and industrial and agricultural wastewater are the main causes that causes natural water phosphorus to pollute.Under normal circumstances, the phosphorus content of municipal wastewater is 4.15 mg/L (in phosphorus), the phosphorus content of industrial wastewater is often all more than 10 mg/L, before entering natural water, remaining a small amount of P elements (even less than 1 m/L) after treated, through rich long-pending, also cause most probably this problem of body eutrophication.At present, water body dephosphorized technology mainly contains bioanalysis, coagulant sedimentation, absorption method, ion-exchange and membrane separation process.Bioanalysis dephosphorization is widely used, but also has the shortcomings such as treatment facility is many, cost is high, operational management is complicated.Absorption method because of have economical and efficient, simple, be used widely without sludge creation and the sorbing material advantage such as can regenerate.
The key of adsorption effect quality is the difference of adsorbent.The pressure that is accompanied by the each side such as society, economy, the energy increases increasingly, it has been generally acknowledged that desirable sorbing material should possess following several feature: cheap, local reserves are abundant, industry byproduct, absorption have the potentiality that again develop after saturated.This viewpoint has synchronously been considered the improvement of polluted water body and the recycling of solid waste, is to realize economic interests and the dual-purpose effective means of Environmental security.According to domestic and foreign literature, the industry byproduct material that exploitation contains the elemental compositions such as iron, aluminium, silicon, calcium, and the Adsorption that it is effectively applied to water systems'phosphorus element has become study hotspot.Nickel slag is the composite oxides slag of a kind of Si of being rich in, Fe, Ca, Mg, Al element.And at present, prepare adsorbent to process the research of Phosphorus From Wastewater element and there is not yet report take nickel slag as primary raw material, this project belongs to the technology of first research invention both at home and abroad.
Summary of the invention
The object of the invention is to the problems such as nickel slag recovery utilization rate for industrial waste is low, a kind of nickel slag sorbing material for treatment of Phosphorus Containing Waste Water and preparation method thereof is provided.The present invention has not only found recycling new technology approach for industrial waste nickel slag, polluted water body is administered simultaneously, has realized the dual purpose of economic interests and environmental protection.
For achieving the above object, the present invention adopts following technical scheme:
For a nickel slag sorbing material for treatment of Phosphorus Containing Waste Water, raw material comprises nickel slag and Al (OH)
3.
Described nickel slag is the solid slag producing in metallic nickel and nickel alloy smelting process, and its composition is SiO
2be 30 ~ 50 wt %, Fe
2o
3be 30 ~ 60 wt %, CaO is 1.5 ~ 5 wt %, and MgO is 1 ~ 15 wt %, Al
2o
3be 2.5 ~ 6 wt %, NiO is 3 ~ 6 wt %, and in raw material, Al/Fe mol ratio is 0.5 ~ 2.
A kind of method of preparing the nickel slag sorbing material for treatment of Phosphorus Containing Waste Water as above is: with nickel slag, Al (OH)
3for raw material, through pretreatment, compressing, sintering and hydrothermal treatment consists, make renewable nickel slag sorbing material.
The preparation method who is used for the nickel slag sorbing material for the treatment of of Phosphorus Containing Waste Water, concrete steps are:
(1) pretreatment: nickel slag is placed in to ball mill wet ball grinding 18 ~ 25 hours, and the slurry of grinding takes out and is placed on 80 ~ 120 ℃ of oven dry moisture in electric heating air blast thermostatic drying chamber, then crosses 100 mesh sieves and obtains system material;
(2) compressing: the system material that step (1) is made and Al (OH)
3be 0.5 ~ 2 to add after mixing in batch mixer and make batch mixing by Al/Fe mol ratio; Add organic water to carry out granulation, mistake 50 mesh sieves after granulation completes, old 24 hours; Batch mixing is compressing;
(3) sintering and hydrothermal treatment consists: the sample after moulding is placed in to air after natural drying 24 hours, is placed in chamber type electric resistance furnace sintering, then cool to room temperature with the furnace; The sample burning till is placed in water heating kettle, carries out hydrothermal treatment consists at 130 ~ 180 ℃, and the hydro-thermal time is 12 ~ 20 hours; Treat that water heating kettle is cooling, sample is dried, make nickel slag sorbing material.
Organic water described in step (2) is the polyvinyl alcohol water solution of volume fraction 20%; Every 100g batch mixing adds 5～10mL organic water.
Described its temperature of sintering of step (3) is 800 ~ 1100 ℃, and heating rate is 5 ℃/min, and temperature retention time is 2 hours.
Described compressing of step (2) need be adjusted pressure and dwell time according to the addition of the specification of mould and batch mixing; As, batch mixing addition is 2.0g, and while being pressed into the disc-shaped sample of diameter 20.00mm, adjustment pressure is 2Mpa, and the dwell time is 10s.
Beneficial effect of the present invention is:
1) can make full use of industrial waste nickel slag, alleviate its a large amount of discharges or idle pollution on the environment, turn waste into wealth, with the pollution treatment of giving up, ecological, environmental protective.
2) the nickel slag sorbing material high adsorption capacity for treatment of Phosphorus Containing Waste Water of preparing through the inventive method, applied range, not only can adsorb the phosphorus in waste water, can also adsorb other anion and heavy metal ion.
3) the method operating procedure is simple, and the nickel slag sorbing material recoverable making, can not cause secondary pollution.
4) raw material sources that the present invention adopts are simple, and cost is low, possesses very significant economic benefit and social benefit, has very strong market competition ability.
The specific embodiment
The present invention further illustrates the present invention with the following example, but protection scope of the present invention is not limited to the following example.
The phosphorus-containing wastewater that following embodiment is used, uses AR KH
2pO
4be mixed with the phosphate stock solution (in P) of 50mg/L, then be diluted to required concentration by deionized water.
The nickel slag that following embodiment is used, its chemistry and mineral composition are SiO
2content 34.38wt%, Fe
2o
3content 45.84 wt %, CaO content 3.37 wt %, MgO content 8.86 wt %, Al
2o
3containing 2.26 wt %, NiO is 3 ~ 6 wt %, also has the elements such as minute quantity Cu, Co.
embodiment 1
It is 0.5 for Al/Fe mol ratio of the composition of raw materials of the renewable sorbing material of waste water dephosphorization that this example is utilized the development of nickel slag, is converted into nickel slag and Al (OH)
3mass ratio be that every 100g nickel slag adds 18.92g Al (OH)
3.
This example is utilized the method for nickel slag development for the renewable sorbing material of waste water dephosphorization, and it comprises following steps:
(1) pretreatment
Nickel slag is placed in to ball mill wet ball grinding 20 hours, and the slurry of grinding takes out and is placed in electric heating air blast thermostatic drying chamber 100 ℃ and dries moisture, and then crossing 100 mesh sieves, to obtain system material for subsequent use.
(2) sample preparation
Nickel slag and the Al (OH) of 100 mesh sieves will be crossed after ball milling
3after weighing by formula (Al/Fe mol ratio 0.5, Al/Fe mass ratio 0.24), add in batch mixer and mix; Add afterwards organic water to carry out granulation, ratio is that every 100g raw material adds 7mL organic water, complete rear mistake 50 mesh sieves of granulation, old 24 hours.Batch mixing adopts mould compressing.
(3) sintering and hydrothermal treatment consists
Sample after moulding is placed in air after natural drying 24 hours, is placed in chamber type electric resistance furnace sintering, and sintering temperature is 800 ℃, and heating rate is 5 ℃/min, and temperature retention time is 2 hours, cools to room temperature with the furnace.The sample burning till is placed in water heating kettle, carries out hydrothermal treatment consists at 130 ℃, and the hydro-thermal time is 12 hours.Treat that water heating kettle is cooling, take out sample and dry, obtain sorbing material.
Get 2.0g sample of sorbent, be placed in the phosphorus-containing wastewater Static Adsorption 24 hours of 50mL 5mg/L, get supernatant liquor and survey phosphoric residue concentration, calculate clearance.Result demonstration, sample of sorbent is 91.2% to the clearance of phosphorus.
embodiment 2
It is 0.67 for Al/Fe mol ratio of the composition of raw materials of the renewable sorbing material of waste water dephosphorization that this example is utilized the development of nickel slag, is converted into nickel slag and Al (OH)
3mass ratio be that every 100g nickel slag adds 26.33g Al (OH)
3.
This example is utilized the method for nickel slag development for the renewable sorbing material of waste water dephosphorization, and it comprises following steps:
(1) pretreatment
Nickel slag is placed in to ball mill wet ball grinding 25 hours, and the slurry of grinding takes out and is placed in electric heating air blast thermostatic drying chamber 80 ℃ and dries moisture, and then crossing 100 mesh sieves, to obtain system material for subsequent use.
(2) sample preparation
Nickel slag and the Al (OH) of 100 mesh sieves will be crossed after ball milling
3after weighing by formula (Al/Fe mol ratio 0.67, Al/Fe mass ratio 0.32), add in batch mixer and mix; Add afterwards organic water to carry out granulation, ratio is that every 100g raw material adds 5mL organic water, complete rear mistake 50 mesh sieves of granulation, old 24 hours.Batch mixing adopts mould compressing.
(3) sintering and hydrothermal treatment consists
Sample after moulding is placed in air after natural drying 24 hours, is placed in chamber type electric resistance furnace sintering, and sintering temperature is 850 ℃, and heating rate is 5 ℃/min, and temperature retention time is 2 hours, cools to room temperature with the furnace.The sample burning till is placed in water heating kettle, carries out hydrothermal treatment consists at 140 ℃, and the hydro-thermal time is 14 hours.Treat that water heating kettle is cooling, take out sample and dry, obtain sorbing material.
Get 2.0g sample of sorbent, be placed in the phosphorus-containing wastewater Static Adsorption 24 hours of 50mL 5mg/L, get supernatant liquor and survey phosphoric residue concentration, calculate clearance.Result demonstration, sample of sorbent is 91.8% to the clearance of phosphorus.
embodiment 3
It is that 1, Al/Fe mass ratio is 0.48 for Al/Fe mol ratio of the composition of raw materials of the renewable sorbing material of waste water dephosphorization that this example is utilized the development of nickel slag, is converted into nickel slag and Al (OH)
3mass ratio be that every 100g nickel slag adds 41.23g Al (OH)
3.
This example is utilized the method for nickel slag development for the renewable sorbing material of waste water dephosphorization, and it comprises following steps:
Step (1) is with embodiment 1.
(2) sample preparation
Nickel slag and the Al (OH) of 100 mesh sieves will be crossed after ball milling
3after weighing by formula (Al/Fe mol ratio 1, Al/Fe mass ratio 0.48), add in batch mixer and mix; Add afterwards organic water to carry out granulation, ratio is that every 100g raw material adds 10mL organic water, complete rear mistake 50 mesh sieves of granulation, old 24 hours.Batch mixing adopts mould compressing.
(3) sintering and hydrothermal treatment consists
Sample after moulding is placed in air after natural drying 24 hours, is placed in chamber type electric resistance furnace sintering, and sintering temperature is 900 ℃, and heating rate is 5 ℃/min, and temperature retention time is 2 hours, cools to room temperature with the furnace.The sample burning till is placed in water heating kettle, carries out hydrothermal treatment consists at 150 ℃, and the hydro-thermal time is 16 hours.Treat that water heating kettle is cooling, take out sample and dry, obtain sorbing material.
Get 2.0g sample of sorbent, be placed in the phosphorus-containing wastewater Static Adsorption 24 hours of 50mL 5mg/L, get supernatant liquor and survey phosphoric residue concentration, calculate clearance.Result demonstration, sample of sorbent is 95.3% to the clearance of phosphorus.
embodiment 4
It is that 1.5, Al/Fe mass ratio is 0.72 for Al/Fe mol ratio of the composition of raw materials of the renewable sorbing material of waste water dephosphorization that this example is utilized the development of nickel slag, is converted into nickel slag and Al (OH)
3mass ratio be that every 100g nickel slag adds 63.58g Al (OH)
3.
This example is utilized the method for nickel slag development for the renewable sorbing material of waste water dephosphorization, and it comprises following steps:
Step (1) is with embodiment 1.
(2) sample preparation
Nickel slag and the Al (OH) of 100 mesh sieves will be crossed after ball milling
3after weighing by formula (Al/Fe mol ratio 1.5, Al/Fe mass ratio 0.72), add in batch mixer and mix; Add afterwards organic water to carry out granulation, ratio is that every 100g raw material adds 8mL organic water, complete rear mistake 50 mesh sieves of granulation, old 24 hours.Batch mixing adopts mould compressing.
(3) sintering and hydrothermal treatment consists
Sample after moulding is placed in air after natural drying 24 hours, is placed in chamber type electric resistance furnace sintering, and sintering temperature is 1000 ℃, and heating rate is 5 ℃/min, and temperature retention time is 2 hours, cools to room temperature with the furnace.The sample burning till is placed in water heating kettle, carries out hydrothermal treatment consists at 160 ℃, and the hydro-thermal time is 18 hours.Treat that water heating kettle is cooling, take out sample and dry, obtain sorbing material.
Get 2.0g sample of sorbent, be placed in the phosphorus-containing wastewater Static Adsorption 24 hours of 50mL 5mg/L, get supernatant liquor and survey phosphoric residue concentration, calculate clearance.Result demonstration, sample of sorbent is 92.2% to the clearance of phosphorus.
embodiment 5
It is that 2, Al/Fe mass ratio is 0.96 for Al/Fe mol ratio of the composition of raw materials of the renewable sorbing material of waste water dephosphorization that this example is utilized the development of nickel slag, is converted into nickel slag and Al (OH)
3mass ratio be that every 100g nickel slag adds 85.93g Al (OH)
3.
This example is utilized the method for nickel slag development for the renewable sorbing material of waste water dephosphorization, and it comprises following steps:
Step (1) is with embodiment 1.
(2) sample preparation
Nickel slag and the Al (OH) of 100 mesh sieves will be crossed after ball milling
3after weighing by formula (Al/Fe mol ratio 2, Al/Fe mass ratio 0.96), add in batch mixer and mix; Add afterwards organic water to carry out granulation, ratio is that every 100g raw material adds 9mL organic water, complete rear mistake 50 mesh sieves of granulation, old 24 hours.Batch mixing adopts mould compressing.
(3) sintering and hydrothermal treatment consists
Sample after moulding is placed in air after natural drying 24 hours, is placed in chamber type electric resistance furnace sintering, and sintering temperature is 1100 ℃, and heating rate is 5 ℃/min, and temperature retention time is 2 hours, cools to room temperature with the furnace.The sample burning till is placed in water heating kettle, carries out hydrothermal treatment consists at 180 ℃, and the hydro-thermal time is 20 hours.Treat that water heating kettle is cooling, take out sample and dry, obtain sorbing material.
Get 2.0g sample of sorbent, be placed in the phosphorus-containing wastewater Static Adsorption 24 hours of 50mL 5mg/L, get supernatant liquor and survey phosphoric residue concentration, calculate clearance.Result demonstration, sample of sorbent is 91.5% to the clearance of phosphorus.
embodiment 6
It is that 0.5, Al/Fe mass ratio is 0.24 for Al/Fe mol ratio of the composition of raw materials of the renewable sorbing material of waste water dephosphorization that this example is utilized the development of nickel slag, is converted into nickel slag and Al (OH)
3mass ratio be that every 100g nickel slag adds 18.92g Al (OH)
3.
This example is utilized the method for nickel slag development for the renewable sorbing material of waste water dephosphorization, and it comprises following steps:
Step (1) is with embodiment 1.
(2) sample preparation
Nickel slag and the Al (OH) of 100 mesh sieves will be crossed after ball milling
3after weighing by formula (Al/Fe mol ratio 0.5, Al/Fe mass ratio 0.24), add in batch mixer and mix; Add afterwards organic water to carry out granulation, ratio is that every 100g raw material adds 10mL organic water, complete rear mistake 50 mesh sieves of granulation, old 24 hours.Batch mixing adopts mould compressing.
(3) sintering and hydrothermal treatment consists
Sample after moulding is placed in air after natural drying 24 hours, is placed in chamber type electric resistance furnace sintering, and sintering temperature is 900 ℃, and heating rate is 5 ℃/min, and temperature retention time is 2 hours, cools to room temperature with the furnace.The sample burning till is placed in water heating kettle, carries out hydrothermal treatment consists at 130 ℃, and the hydro-thermal time is 12 hours.Treat that water heating kettle is cooling, take out sample and dry, obtain sorbing material.
Get 2.0g sample of sorbent, be placed in the phosphorus-containing wastewater Static Adsorption 24 hours of 50mL 5mg/L, get supernatant liquor and survey phosphoric residue concentration, calculate clearance.Result demonstration, sample of sorbent is 92.7% to the clearance of phosphorus.
embodiment 7
It is that 0.5, Al/Fe mass ratio is 0.24 for Al/Fe mol ratio of the composition of raw materials of the renewable sorbing material of waste water dephosphorization that this example is utilized the development of nickel slag, is converted into nickel slag and Al (OH)
3mass ratio be that every 100g nickel slag adds 18.92g Al (OH)
3.
This example is utilized the method for nickel slag development for the renewable sorbing material of waste water dephosphorization, and it comprises following steps:
Step (1) is with embodiment 1.
(2) sample preparation
Nickel slag and the Al (OH) of 100 mesh sieves will be crossed after ball milling
3after weighing by formula (Al/Fe mol ratio 0.5, Al/Fe mass ratio 0.24), add in batch mixer and mix; Add afterwards organic water to carry out granulation, ratio is that every 100g raw material adds 7mL organic water, complete rear mistake 50 mesh sieves of granulation, old 24 hours.Batch mixing adopts mould compressing.
(3) sintering and hydrothermal treatment consists
Sample after moulding is placed in air after natural drying 24 hours, is placed in chamber type electric resistance furnace sintering, and sintering temperature is 900 ℃, and heating rate is 5 ℃/min, and temperature retention time is 2 hours, cools to room temperature with the furnace.The sample burning till is placed in water heating kettle, carries out hydrothermal treatment consists at 140 ℃, and the hydro-thermal time is 12 hours.Treat that water heating kettle is cooling, take out sample and dry, obtain sorbing material.
Get 2.0g sample of sorbent, be placed in the phosphorus-containing wastewater Static Adsorption 24 hours of 50mL 5mg/L, get supernatant liquor and survey phosphoric residue concentration, calculate clearance.Result demonstration, sample of sorbent is 93.1% to the clearance of phosphorus.
embodiment 8
It is that 0.5, Al/Fe mass ratio is 0.24 for Al/Fe mol ratio of the composition of raw materials of the renewable sorbing material of waste water dephosphorization that this example is utilized the development of nickel slag, is converted into nickel slag and Al (OH)
3mass ratio be that every 100g nickel slag adds 18.92g Al (OH)
3.
This example is utilized the method for nickel slag development for the renewable sorbing material of waste water dephosphorization, and it comprises following steps:
Step (1) is with embodiment 1.
(2) sample preparation
Nickel slag and the Al (OH) of 100 mesh sieves will be crossed after ball milling
3after weighing by formula (Al/Fe mol ratio 0.5, Al/Fe mass ratio 0.24), add in batch mixer and mix; Add afterwards organic water to carry out granulation, ratio is that every 100g raw material adds 9mL organic water, complete rear mistake 50 mesh sieves of granulation, old 24 hours.Batch mixing adopts mould compressing.
(3) sintering and hydrothermal treatment consists
Sample after moulding is placed in air after natural drying 24 hours, is placed in chamber type electric resistance furnace sintering, and sintering temperature is 900 ℃, and heating rate is 5 ℃/min, and temperature retention time is 2 hours, cools to room temperature with the furnace.The sample burning till is placed in water heating kettle, carries out hydrothermal treatment consists at 140 ℃, and the hydro-thermal time is 18 hours.Treat that water heating kettle is cooling, take out sample and dry, obtain sorbing material.
Get 2.0g sample of sorbent, be placed in the phosphorus-containing wastewater Static Adsorption 24 hours of 50mL 5mg/L, get supernatant liquor and survey phosphoric residue concentration, calculate clearance.Result demonstration, sample of sorbent is 92.4% to the clearance of phosphorus.
embodiment 9
It is that 1, Al/Fe mass ratio is 0.48 for Al/Fe mol ratio of the composition of raw materials of the renewable sorbing material of waste water dephosphorization that this example is utilized the development of nickel slag, is converted into nickel slag and Al (OH)
3mass ratio be that every 100g nickel slag adds 41.23g Al (OH)
3.
This example is utilized the method for nickel slag development for the renewable sorbing material of waste water dephosphorization, and it comprises following steps:
Step (1) is with embodiment 1.
(2) sample preparation
Nickel slag and the Al (OH) of 100 mesh sieves will be crossed after ball milling
3after weighing by formula (Al/Fe mol ratio 1, Al/Fe mass ratio 0.48), add in batch mixer and mix; Add afterwards organic water to carry out granulation, ratio is that every 100g raw material adds 10mL organic water, complete rear mistake 50 mesh sieves of granulation, old 24 hours.Batch mixing adopts mould compressing.
(3) sintering and hydrothermal treatment consists
Sample after moulding is placed in air after natural drying 24 hours, is placed in chamber type electric resistance furnace sintering, and sintering temperature is 900 ℃, and heating rate is 5 ℃/min, and temperature retention time is 2 hours, cools to room temperature with the furnace.The sample burning till is placed in water heating kettle, carries out hydrothermal treatment consists at 140 ℃, and the hydro-thermal time is 18 hours.Treat that water heating kettle is cooling, take out sample and dry, obtain sorbing material.
Get 2.0g sample of sorbent, be placed in the phosphorus-containing wastewater Static Adsorption 24 hours of 50mL 5mg/L, get supernatant liquor and survey phosphoric residue concentration, calculate clearance.Result demonstration, sample of sorbent is 95.9% to the clearance of phosphorus.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (7)
1. for a nickel slag sorbing material for treatment of Phosphorus Containing Waste Water, it is characterized in that: raw material comprises nickel slag and Al (OH)
3.
2. the nickel slag sorbing material for treatment of Phosphorus Containing Waste Water according to claim 1, is characterized in that: described nickel slag is the solid slag producing in metallic nickel and nickel alloy smelting process, and its main component is: SiO
230 ~ 50 wt %, Fe
2o
330 ~ 60 wt %, CaO 1.5 ~ 5 wt %, MgO 1 ~ 15 wt %, Al
2o
32.5 ~ 6 wt %, NiO 3 ~ 6 wt %.
3. the nickel slag sorbing material for treatment of Phosphorus Containing Waste Water according to claim 1, is characterized in that: in raw material, Al/Fe mol ratio is 0.5 ~ 2.
4. a method of preparing the nickel slag sorbing material for treatment of Phosphorus Containing Waste Water as claimed in claim 1, is characterized in that: with nickel slag, Al (OH)
3for raw material, through pretreatment, compressing, sintering and hydrothermal treatment consists, make renewable nickel slag sorbing material.
5. the preparation method of the nickel slag sorbing material for treatment of Phosphorus Containing Waste Water according to claim 4, is characterized in that: concrete steps are:
(1) pretreatment: nickel slag is placed in to ball mill wet ball grinding 18 ~ 25 hours, and the slurry of grinding takes out and is placed on 80 ~ 120 ℃ of oven dry moisture in electric heating air blast thermostatic drying chamber, then crosses 100 mesh sieves and obtains system material;
(2) compressing: the system material that step (1) is made and Al (OH)
3be 0.5 ~ 2 to add after mixing in batch mixer and make batch mixing by Al/Fe mol ratio; Add organic water to carry out granulation, mistake 50 mesh sieves after granulation completes, old 24 hours; Batch mixing is compressing;
(3) sintering and hydrothermal treatment consists: the sample after moulding is placed in to air after natural drying 24 hours, is placed in chamber type electric resistance furnace sintering, then cool to room temperature with the furnace; The sample burning till is placed in water heating kettle, carries out hydrothermal treatment consists at 130 ~ 180 ℃, and the hydro-thermal time is 12 ~ 20 hours; Treat that water heating kettle is cooling, sample is dried, make nickel slag sorbing material.
6. the preparation method of the nickel slag sorbing material for treatment of Phosphorus Containing Waste Water according to claim 5, is characterized in that: the organic water described in step (2) is the polyvinyl alcohol water solution of volume fraction 20%; Every 100g batch mixing adds 5～10mL organic water.
7. the preparation method of the nickel slag sorbing material for treatment of Phosphorus Containing Waste Water according to claim 5, is characterized in that: described its temperature of sintering of step (3) is 800 ~ 1100 ℃, and heating rate is 5 ℃/min, and temperature retention time is 2 hours.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410089441.3A CN103801258B (en) | 2014-03-12 | 2014-03-12 | For the nickel slag sorbing material and preparation method thereof for the treatment of of Phosphorus Containing Waste Water |
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|---|---|---|---|
| CN201410089441.3A CN103801258B (en) | 2014-03-12 | 2014-03-12 | For the nickel slag sorbing material and preparation method thereof for the treatment of of Phosphorus Containing Waste Water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831080A (en) * | 2014-03-12 | 2014-06-04 | 福州大学 | Nickel slag adsorbing material for recovering heavy metal ions in wastewater and preparation method thereof |
| CN111644148A (en) * | 2020-06-10 | 2020-09-11 | 北京理工大学 | Preparation method of ultra-efficient sewage dephosphorization adsorbent |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1157695A (en) * | 1997-06-12 | 1999-03-02 | Tomita Seiyaku Kk | Treatment process for phosphorus-containing wastewaer |
| CN103241795A (en) * | 2013-05-17 | 2013-08-14 | 南京理工大学 | Method for removing phosphorus pollutants in sewage |
| CN103831080A (en) * | 2014-03-12 | 2014-06-04 | 福州大学 | Nickel slag adsorbing material for recovering heavy metal ions in wastewater and preparation method thereof |
-
2014
- 2014-03-12 CN CN201410089441.3A patent/CN103801258B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1157695A (en) * | 1997-06-12 | 1999-03-02 | Tomita Seiyaku Kk | Treatment process for phosphorus-containing wastewaer |
| CN103241795A (en) * | 2013-05-17 | 2013-08-14 | 南京理工大学 | Method for removing phosphorus pollutants in sewage |
| CN103831080A (en) * | 2014-03-12 | 2014-06-04 | 福州大学 | Nickel slag adsorbing material for recovering heavy metal ions in wastewater and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 段金明 等: "改性钢渣吸附氨氮和磷的特性研究", 《环境工程学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831080A (en) * | 2014-03-12 | 2014-06-04 | 福州大学 | Nickel slag adsorbing material for recovering heavy metal ions in wastewater and preparation method thereof |
| CN103831080B (en) * | 2014-03-12 | 2016-03-30 | 福州大学 | For reclaiming nickel slag sorbing material and the preparation thereof of heavy metal ions in wastewater |
| CN111644148A (en) * | 2020-06-10 | 2020-09-11 | 北京理工大学 | Preparation method of ultra-efficient sewage dephosphorization adsorbent |
| CN111644148B (en) * | 2020-06-10 | 2021-11-26 | 北京理工大学 | Preparation method of ultra-efficient sewage dephosphorization adsorbent |
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| CN103801258B (en) | 2015-12-02 |
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