CN105858957A - Method for treating polluted water by utilizing solid waste steel slag - Google Patents

Method for treating polluted water by utilizing solid waste steel slag Download PDF

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Publication number
CN105858957A
CN105858957A CN201610275611.6A CN201610275611A CN105858957A CN 105858957 A CN105858957 A CN 105858957A CN 201610275611 A CN201610275611 A CN 201610275611A CN 105858957 A CN105858957 A CN 105858957A
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China
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water
solid waste
acid
slag
utilizing solid
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CN201610275611.6A
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Chinese (zh)
Inventor
杨鑫博
刘缘缘
潘凡
李忠林
周洲
姜永华
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云南华云天朗环保有限责任公司
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Priority to CN201610275611.6A priority Critical patent/CN105858957A/en
Publication of CN105858957A publication Critical patent/CN105858957A/en

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/281Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/105Phosphorus compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/20Heavy metals or heavy metal compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/08Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/16Total nitrogen (tkN-N)

Abstract

The invention discloses a method for treating polluted water by utilizing solid waste steel slag. The method is used for carrying out modification treatment on an industrial solid waste environment-friendly material steel slag and adopting a steel slag adsorption method to treat eutrophicated water and heavy metal polluted water, can achieve the effects of effectively degrading TP, TN, As, Pb, COD, and the like in the sewage and effectively improving the eutrophicated water and the heavy metal polluted water, can be directly applied to treatment of river water, lakes and underground water in urban areas, and has the effect of effectively solving the current problem of water pollution caused by urban construction and development.

Description

A kind of method utilizing solid waste slag processing polluted-water
Technical field
The invention belongs to resource and environment technical field, particularly relate to a kind of side utilizing solid waste slag processing polluted-water Method.
Background technology
Nitrogen, phosphorus and heavy metal ion are the major pollutants matter in soil and water body, and the former is also to cause water eutrophication The arch-criminal changed, they are mainly the industries such as nonferrous smelting, plating, chemical industry, printing and dyeing, mining industry and are discharged in water body the dirt produced Dye.After entering environment as polluter, nitrogen, phosphorus cause body eutrophication, cause water body stench;Heavy metal ion can not be by Institute of Micro-biology degrades, and mutually converting and dispersion and enrichment between form can only occur, and along biological chain transmission enrichment, finally by Aquatic products, plant enter human body, jeopardize human body healthy.Therefore, body eutrophication and heavy metal ion pollute be water body, One of a kind of main pollution type in soil, is one of the important object of environmental monitoring and pollution control.Nitrogen, phosphorus, heavy metal from After son is discharged as polluter, mainly carry out contamination by water body, therefore, prevent and treat water pollution, solve water body richness battalion The most important link that fosterization and heavy metal ion are polluted is the improvement of total nitrogen in water body, total phosphorus, COD and heavy metal ion.
The method removing total nitrogen in water, total phosphorus, COD and heavy metal ion is a lot, such as: chemical precipitation method, ion exchange, Electrolysis, coacervation, membrane separation process, oxidation. reducing process, ferrite process, absorption method etc..
CN201110040640.1 discloses a kind of with utilizing coprecipitation to process micro-pollution and the side of eutrophication water Method, by measuring the ammonia nitrogen in water body and phosphate anion and concentration of heavy metal ion;Add calcium hydroxide emulsion to regulate extremely The pH of water is 10.0-11.0, is stirred continuously in the process, and natural subsidence removes precipitation;By artificial or natural aeration, make water PH value drop to less than 8.The present invention passes through co-precipitation, makes some heavy metal ion, phosphate radical and the algae etc. in water Partly organic matter is together removed, and reduces the organic COD value produced such as algae.
But various methods have its application limitation, such as chemical precipitation method costly, sludge quantity is big, if mud is not Comprehensive utilization can cause secondary pollution in addition;Costly, wastewater treatment capacity is little for oxide-reduction method, and the quantity of slag is big, also easily causes Secondary pollution;The power consumption of electrolytic method is high, and effluent quality is poor, and wastewater treatment capacity is little;In membrane separating method, the stability of liquid film Difference;Absorption method is due to simple to operation, and processing cost is low, high treating effect, has become as total nitrogen, total phosphorus, COD and heavy metal One of main method of ion remaval.
Owing to conventional adsorbent such as activated carbon, ion exchange resin is expensive, process waste water cost the highest, thus honest and clean Valency, the exploitation of efficient absorption material have become as a study hotspot in absorption method.Be presently used for Adsorption heavy metal from The adsorbent of son includes: acticarbon, clay class adsorbent, chitosan class adsorbent, humic acids adsorbent, garbage Adsorbent, biological adsorption agent etc..
Comparing with other adsorbing materials, Industrial Solid Waste environment-friendly materials slag is loose porous, and specific surface area is big, has certain Absorbability, and the density of slag is big, and the sedimentation velocity in water is fast, it is easy to solid-liquid separation.In addition the wide material sources of slag, Belong to solid waste.Therefore, if it can be developed make Wastewater processing absorbent, it is possible not only to process into waste water, especially eutrophication The process of water body and effluent containing heavy metal ions provides cheap, apply convenient adsorbing material, and can " treatment of wastes with processes of wastes against one another ".
Summary of the invention
Owing to prior art can not solve sewage eutrophication and heavy metal pollution efficiently, at a low price, thus cause water body The series of problems such as seriously polluted, heavy metal accumulation, directly affect the comprehensive utilization of water resource, and the present invention provides the one can be to richness Nutrient laden and the water body containing heavy metal pollution carry out the processing method of efficient and cost-effective, to avoid water body to deteriorate and heavy metal richness Collection.
The present invention is realized by following technical proposal: a kind of method utilizing solid waste slag processing polluted-water, its feature It is: through following each step:
(1) by eutrophication or contaminated by heavy metals sewage through conventional pretreatment, remove granule foreign, and adjust the pH of waste water It is 6~9, enters retort afterwards;
(2) in the waste water of step (1) pretreatment, modified Industrial Solid Waste ring is added by the amount that solid-to-liquid ratio is 10~70g/L Protect material slag, afterwards under the concussion mixing speed of 0~200r/min, carry out adsorption reaction 10~120min, divide through solid-liquid From, obtain process water.
The pretreatment of described step (1) is that the grid of employing routine retains, precipitates or the mode of flocculation sediment separation, removes Granule foreign in waste water and bigger impurity.
The wastewater pH of described step (1) adjusts, be by add hydrochloric acid that volume fraction is 20% 60%, sulphuric acid, nitric acid, Fluohydric acid., perchloric acid, acetic acid or mass fraction be 10% 80% sodium hydroxide, sodium carbonate, sodium bicarbonate, potassium hydroxide, carbon One or more in acid potassium, potassium bicarbonate, calcium oxide, aqua calcis regulate, and its chemical reaction process is: H++ OH-→ H2O;
Or HCO3 -+OH- → H2O+CO3 2-;
Or HCO3 -+H+ → H2O+CO2;;
Or CO3 2-+2H+→ H2O+CO2
The modified Industrial Solid Waste environment-friendly materials slag of described step (2), is 10~98v/v% by adding concentration Nitric acid, sulphuric acid, hydrochloric acid or acetum, be modified according to the ratio of slag with acid volume 1:1 1:5, be washed till with clear water Neutrality, dries preparation the most in an oven at a temperature of 40 DEG C 150 DEG C.
The solid-liquid separation of described step (2) is appointing of one or more in the filtration of routine, sucking filtration, filter pressing, membrance separation Meaning combination.
It is an object of the invention to utilize modified Industrial Solid Waste environment-friendly materials slag, the water processing eutrophication with it and quilt The water of heavy metal pollution, uses slag adsorption technology, and effectively TP, TN, As, Pb, the COD etc. in degraded sewage, improve eutrophy The water body changed and contaminated by heavy metals water body, may be directly applied to the process of Urban River Water, lake, subsoil water, efficient solution The water pollution problem the most currently caused due to urban construction and development.
Present invention have an advantage that (1) utilize Industrial Solid Waste to process the water of eutrophication and contaminated by heavy metals water, More economically, environmental protection, water outlet will not bring secondary pollution;(2) (chemical precipitation method, ion exchange to solve conventional treatment method Method, electrolysis, coacervation, membrane separation process, oxidation. reducing process, ferrite process etc.) costly, sludge quantity is big, and energy consumption is high, processes Small scale, produces secondary pollution, the problems such as removal efficiency is low and uneconomical;(3) the slag absorption method used solves adsorption material Material costliness, processes the highest problem of waste water cost, such as activated carbon, ion exchange resin etc., simple to operation, processing cost Low, high treating effect.
The present invention reaches 97~100% to the clearance of total phosphorus, and the clearance of the TN of 0.1~2mg/L is 30%, the clearance of As 90%~95%, the clearance of Pb 70%~90%, 40~about 150mg/L COD degradable to 10~below 20mg/L;Profit It is with the solid after these invention absorption pollutant, the most recyclable as subgrade engineering, civil construction project, cement raw material etc., Reach to process slag, the purpose of " treatment of wastes with processes of wastes against one another ".
Accompanying drawing explanation
Fig. 1 is the process chart of a kind of method utilizing solid waste slag processing polluted-water.
Detailed description of the invention
Further illustrate the flesh and blood of the present invention below in conjunction with the accompanying drawings, but present disclosure is not limited to this.
Embodiment one
(1) by Kunming, Yunnan peacefulness domestic Mantidis river river sample (COD:36.69mg/L, TP:0.258mg/L, TN:1.383mg/ L) mode using conventional grid to retain, removes the granule foreign in waste water, it is ensured that when waste water disclosure satisfy that adsorption treatment Requirement, river pH is neutral, it is not necessary to regulation;
(2) in the waste water of step (1) pretreatment, modified slag is added by the amount that solid-to-liquid ratio is 30g/L, afterwards at 200r/ Under the concussion mixing speed of min, carry out adsorption reaction 120min under room temperature, then through conventional filtration solid-liquid separation, obtain water outlet.
Modified slag, is to be the nitric acid of 40v/v% by adding concentration, carries out according to the ratio of slag with sour volume 1:3 Modification, is washed till neutrality with clear water, makes with 90 DEG C of drying the most in an oven.
Final detection: COD is 17.98mg/L, and clearance is 50.99%;Total phosphorus does not detects, and clearance is 100%;Total nitrogen 0.95mg/L, clearance is 31.45%.
Embodiment two
(1) as a example by the tested water sample 1 of certain unit: pH=1.62, COD as 99mg/L, As0.8674mg/L, Pb0.508mg/L, Used the mode of conventional filtration, removed the granule foreign in waste water, it is ensured that waste water disclosure satisfy that requirement during adsorption treatment, And the pH adding potassium hydroxide solution adjustment waste water is 7.97;
(2) in the waste water of step (1) pretreatment, modified slag is added by the amount that solid-to-liquid ratio is 25g/L, afterwards at 180r/ Under the concussion mixing speed of min, carry out adsorption reaction 60min, then through conventional sucking filtration solid-liquid separation, obtain water outlet.
Modified slag, is to be the nitric acid of 90v/v% by adding concentration, carries out according to the ratio of slag with sour volume 1:4 Modification, is washed till neutrality with clear water, makes with 80 DEG C of drying the most in an oven.
Final outflow water COD is 5.44mg/L, and clearance is 94.51%, As0.0261mg/L, clearance is 96.99%, Pb0.051mg/L, clearance is 89.96%.
Embodiment three
(1) as a example by the tested water sample 2 of certain unit: pH=2.04, COD as 20mg/L, As0.8598mg/L, Pb0.22mg/L, will It uses the mode of conventional filtration, removes the granule foreign in waste water, it is ensured that waste water disclosure satisfy that requirement during adsorption treatment, and The pH adding sodium hydroxide solution adjustment waste water is 6.35;
(2) in the waste water of step (1) pretreatment, modified slag is added by the amount that solid-to-liquid ratio is 35g/L, afterwards at 150r/ Under the concussion mixing speed of min, carry out adsorption reaction 100min, then through conventional sucking filtration solid-liquid separation, obtain water outlet.
Modified slag, is to be the nitric acid of 70v/v% by adding concentration, carries out according to the ratio of slag with sour volume 1:4 Modification, is washed till neutrality with clear water, makes with 80 DEG C of drying the most in an oven.
Final outflow water COD is 6.63mg/L, and clearance is 66.85%, As0.0251mg/L, clearance is 97.06%, Pb0.072mg/L, clearance is 67.27%.
Embodiment four
(1) as a example by the tested water sample 3 of certain unit: pH=1.67, COD as 22mg/L, As0.8542mg/L, TP 3.508mg/L, Used the mode of conventional filtration, removed the granule foreign in waste water, it is ensured that waste water disclosure satisfy that requirement during adsorption treatment, And the pH adding potassium hydroxide solution adjustment waste water is 7.97;
(2) in the waste water of step (1) pretreatment, modified slag is added by the amount that solid-to-liquid ratio is 30g/L, afterwards at 200r/ Under the concussion mixing speed of min, carry out adsorption reaction 120min, then through conventional sucking filtration solid-liquid separation, obtain process water.
Modified slag, is to be the nitric acid of 90v/v% by adding concentration, carries out according to the ratio of slag with sour volume 1:4 Modification, is washed till neutrality with clear water, makes with 80 DEG C of drying the most in an oven.
Final outflow water COD is 5.44mg/L, and clearance is 75.27%, As0.0358mg/L, clearance is 95.81%, TP not Detection, clearance is 100%.
Embodiment five
(1) as a example by the tested water sample 4 of certain unit: pH=10.54, COD as 115mg/L, TP 4.152mg/L, TN 1.526mg/ L, is used the mode of conventional filtration, removes the granule foreign in waste water, it is ensured that wanting when waste water disclosure satisfy that adsorption treatment Ask, and the pH adding sulfuric acid solution adjustment waste water is 7.10;
(2) in the waste water of step (1) pretreatment, modified slag is added by the amount that solid-to-liquid ratio is 32g/L, afterwards at 150r/ Under the concussion mixing speed of min, carry out adsorption reaction 110min, then through conventional sucking filtration solid-liquid separation, obtain water outlet.
Modified slag, is to be the hydrochloric acid of 90v/v% by adding concentration, carries out according to the ratio of slag with sour volume 1:3 Modification, is washed till neutrality with clear water, makes with 80 DEG C of drying the most in an oven.
Final outflow water COD is 13.56mg/L, and clearance is 87.67%, TP 0.0183mg/L, and clearance is 99.56%, TN 1.04mg/L, clearance is 32%.

Claims (5)

1. the method utilizing solid waste slag processing polluted-water, it is characterised in that: through following each step:
(1) eutrophication or contaminated by heavy metals sewage carrying out conventional pretreatment, adjusting sewage pH is 6~9, enters afterwards Retort;
(2) waste water in retort is added modified Industrial Solid Waste environment-friendly materials steel by the amount that solid-to-liquid ratio is 10~70g/L Slag, under the concussion mixing speed of 10~200r/min, reacts 10~120min, through solid-liquid separation, obtains process water.
A kind of method utilizing solid waste slag processing polluted-water the most according to claim 1, it is characterised in that: described Pretreatment is to use conventional grid to retain, precipitate or mode that flocculation sediment separates, removes the granule foreign in sewage and big The float of granule.
A kind of method utilizing solid waste slag processing polluted-water the most according to claim 1, it is characterised in that: adjust dirt Water pH, is to divide by adding hydrochloric acid, sulphuric acid, nitric acid, Fluohydric acid., perchloric acid, acetic acid or quality that volume fraction is 20% 60% Number be 10% 80% sodium hydroxide, sodium carbonate, sodium bicarbonate, potassium hydroxide, potassium carbonate, potassium bicarbonate, calcium oxide, hydroxide One or more in calcium solution regulate, its
Chemical reaction process is: H++OH-→ H2O;
Or HCO3 -+OH- → H2O+CO3 2-;
Or HCO3 -+H+ → H2O+CO2;;
Or CO3 2-+2H+→ H2O+CO2
A kind of method utilizing solid waste slag processing polluted-water the most according to claim 1, it is characterised in that: described step Suddenly the modified Industrial Solid Waste environment-friendly materials slag of (2), is by adding nitric acid that concentration is 10~98v/v%, sulphuric acid, hydrochloric acid Or acetum, it is modified according to the ratio of slag with acid volume 1:1 1:5, is washed till neutrality with clear water, the most in an oven Preparation is dried at a temperature of 40 DEG C 150 DEG C.
A kind of method utilizing solid waste slag processing polluted-water the most according to claim 1, it is characterised in that: described step Suddenly the combination in any of one or more during the solid-liquid separation of (2) is the filtration of routine, sucking filtration, filter pressing, membrance separation.
CN201610275611.6A 2016-04-29 2016-04-29 Method for treating polluted water by utilizing solid waste steel slag CN105858957A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106241995A (en) * 2016-09-19 2016-12-21 上海中冶环境工程科技有限公司 Electroslag purposes in preparing leaded sewage-treating agent
CN106277266A (en) * 2016-08-31 2017-01-04 昆明理工大学 A kind of utilize the method for arsenic in slag processing nonferrous metallurgy waste acid
CN107057712A (en) * 2017-04-14 2017-08-18 东南大学 Suitable for the curing agent and production and application method of highly acid Compound Heavy Metals soil
CN107324473A (en) * 2017-06-24 2017-11-07 常州市宝平不绣钢制品有限公司 A kind of method that composite dephosphorizing agent is prepared based on converter slag
CN107670638A (en) * 2017-09-30 2018-02-09 武汉金钢新材料有限公司 Steel mill's waste residue composition for filtration treatment sewage and preparation method thereof
CN107954495A (en) * 2016-10-14 2018-04-24 湖南大学 The method for removing alachlor in water body
CN107973360A (en) * 2016-10-21 2018-05-01 南京理工大学 A kind of activated alumina modified steel scoria and its application for removing zinc ion in waste water
CN108117146A (en) * 2016-11-30 2018-06-05 湖南大学 The method that alachlor in water body is removed using modified steel scoria
CN108483551A (en) * 2018-04-26 2018-09-04 昆明理工大学 The minimizing technology of arsenic in a kind of waste acid containing arsenic
CN108854940A (en) * 2018-07-16 2018-11-23 南华大学 A kind of modified steel scoria adsorbent and application for uranium-containing waste water processing
CN109012641A (en) * 2018-08-29 2018-12-18 宝钢湛江钢铁有限公司 A kind of preparation method of modified steel scoria heavy metal absorbent

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106277266A (en) * 2016-08-31 2017-01-04 昆明理工大学 A kind of utilize the method for arsenic in slag processing nonferrous metallurgy waste acid
CN106241995A (en) * 2016-09-19 2016-12-21 上海中冶环境工程科技有限公司 Electroslag purposes in preparing leaded sewage-treating agent
CN107954495A (en) * 2016-10-14 2018-04-24 湖南大学 The method for removing alachlor in water body
CN107954495B (en) * 2016-10-14 2020-12-18 湖南大学 Method for removing alachlor in water body
CN107973360A (en) * 2016-10-21 2018-05-01 南京理工大学 A kind of activated alumina modified steel scoria and its application for removing zinc ion in waste water
CN108117146A (en) * 2016-11-30 2018-06-05 湖南大学 The method that alachlor in water body is removed using modified steel scoria
CN108117146B (en) * 2016-11-30 2020-12-18 湖南大学 Method for removing alachlor in water body by using modified steel slag
CN107057712B (en) * 2017-04-14 2020-09-11 东南大学 Curing agent suitable for strong-acid compound heavy metal polluted soil and production and use methods thereof
CN107057712A (en) * 2017-04-14 2017-08-18 东南大学 Suitable for the curing agent and production and application method of highly acid Compound Heavy Metals soil
CN107324473A (en) * 2017-06-24 2017-11-07 常州市宝平不绣钢制品有限公司 A kind of method that composite dephosphorizing agent is prepared based on converter slag
CN107670638A (en) * 2017-09-30 2018-02-09 武汉金钢新材料有限公司 Steel mill's waste residue composition for filtration treatment sewage and preparation method thereof
CN108483551A (en) * 2018-04-26 2018-09-04 昆明理工大学 The minimizing technology of arsenic in a kind of waste acid containing arsenic
CN108854940A (en) * 2018-07-16 2018-11-23 南华大学 A kind of modified steel scoria adsorbent and application for uranium-containing waste water processing
CN109012641A (en) * 2018-08-29 2018-12-18 宝钢湛江钢铁有限公司 A kind of preparation method of modified steel scoria heavy metal absorbent

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