CN101716487B - Steel slag composite adsorbing agent and method for processing printing and dyeing wastewater - Google Patents
Steel slag composite adsorbing agent and method for processing printing and dyeing wastewater Download PDFInfo
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- CN101716487B CN101716487B CN 200910265085 CN200910265085A CN101716487B CN 101716487 B CN101716487 B CN 101716487B CN 200910265085 CN200910265085 CN 200910265085 CN 200910265085 A CN200910265085 A CN 200910265085A CN 101716487 B CN101716487 B CN 101716487B
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Abstract
The invention discloses a preparation method for converting a solid waste resource into an adsorbing material, in particular to a method for preparing a steel slag composite adsorbing agent and a method for adsorbing and processing printing and dyeing wastewater. The steel slag composite adsorbing agent has favorable processing effect on the printing and dyeing wastewater, low cost, large adsorbing capacity and simple production process.
Description
Technical field
The present invention relates to a kind of reclamation of solid wastes and make the preparation method of sorbing material, relate in particular to the steel slag composite adsorbing agent preparation method and be used for the method for adsorption treatment dyeing waste water.
Technical background
Dyeing waste water is meant the waste water that textile products such as cotton, hair, chemical fibre are discharged in preliminary treatment, dyeing, stamp and arrangement process.The dyeing waste water complicated component, colourity is big, concentration is high, and the hard-degraded substance that contains is many, and biodegradability is low.Domestic dye wastewater treatment using is main with bioanalysis generally, is aided with chemical method simultaneously, but decolouring and COD poor removal effect, water outlet is difficult to the stable national specified discharge standard that reaches.Decolorizing printing and dyeing waste water method commonly used at present has absorption method, flocculence, oxidizing process, electrolysis and biochemical process etc.; Wherein absorption method is the common process of decoloring dye waste water; The high disposal cost of charcoal absorption is applied it and is very limited, and seeks the focus that efficient cheap sorbing material becomes various countries scholar extensive concern at present.
Slag is the byproduct of STEELMAKING PRODUCTION, and the slag generation rate is about the 15-20% of crude steel amount, and the output of steel of China in 2006 has been broken through 400,000,000 tons, annual nearly 8,000 ten thousand tons of the slag that produces.Slag is abandoned as refuse for a long time, has not only taken a large amount of soils but also polluted underground water.In recent years, through to Multipurpose Utilization of Steel Slag, more and more countries recognizes that slag no longer is a discarded object, but valuable resource.
At present to the research of steel slag utilization new way relatively more popular be to make sorbing material processing waste water.Compare with other sorbing materials, slag is loose porous, and specific area is big; Have certain adsorption capacity, and the density of slag is big, the sinking speed in water is fast; Be easy to Separation of Solid and Liquid, the wide material sources of slag belong to solid waste in addition, and cheap, convenient application sorbing material can be provided; And can " treatment of wastes with processes of wastes against one another ", make it resource.But it basically all is directly to utilize the slag porous that present slag is made adsorbent, and specific area is big, and the electronegative characteristic in surface is directly handled effluent containing heavy metal ions with slag as sorbing material.Owing to contain heavy metal ion such as iron, lead, mercury, chromium in the slag, as directly making sorbing material, how to prevent the heavy metal ion stripping in the slag, handled waste water is brought secondary pollution.In addition, slag is generally all by pulverize, and this is unfavorable for that water pollutes processing, and increases follow-up filtration treatment cost, need the more compound clay materials of slag be processed granular sorbing material for this reason.
Summary of the invention
The object of the present invention is to provide a kind of steel slag composite adsorbing agent, this steel slag composite adsorbing agent has good treatment effect to dyeing waste water, and with low cost, and adsorbance is big, and production technology is simple.
At first, utilize jaw formula or oppositely rolling roller crusher, and adopt dry type or wet screening classification to obtain the slag of 60-80 order granularity slag crushing.
Secondly, the slag that obtains is added respectively in the sulfuric acid that concentration is 0.5-3.0mol/L, vibrated filtering drying 1-1.5 hour.
Then, the slag of sour modification is mixed by 1: 1 to 3: 1 with bentonite, carry out roasting at 500-700 ℃; Process the slag composite adsorbing material of 3-5cm different-grain diameter.
At last, with the slag composite adsorbing material treatment of dyeing and printing for preparing, in waste water, add the slag composite adsorbing material according to the 0.5-5% weight ratio, 5-20 minute adsorption treatment time, percent of decolourization reaches 98-99.5%, and the COD clearance is 80-85%.
Description of drawings:
Fig. 1 is the effect of slag composite absorption actual dye wastewater.
The specific embodiment:
Embodiment 1
Take Sichuan and climb into steel converter shrend slag 10kg,, sieve into 60 purpose slags through crusher in crushing; According to slag and sulfuric acid weight ratio is 1: 0.03 adding sulfuric acid, vibrates 1.5 hours, filters; Dried 1 hour down at 60-80 ℃,, mix being 1: 2 adding bentonite by slag and bentonite weight ratio; Process the particle of 3cm,, prepare oarse-grained steel slag composite adsorbing agent at 500 ℃ of following roasting 1h.
Embodiment 2
Bulky grain compound adsorbent with embodiment 1 obtains takes by weighing 100g, adds 1m
3In certain dyeing waste water of double fluid of Sichuan, former water pH value is 8.61, and COD is 3830.1mg/L, and colourity is black, and through 10min absorption, the COD clearance is 82.5%, and percent of decolourization is 99.2%.Comparative test result before and after the absorption is seen accompanying drawing " effect of slag composite absorption actual dye wastewater ".
Claims (4)
1. a steel slag composite adsorbing agent is characterized in that: utilize jaw formula or oppositely rolling roller crusher with slag crushing, and adopt dry type or wet screening classification to obtain the slag of 60-80 order granularity; The slag that obtains is added respectively in the sulfuric acid that concentration is 0.5-3.0mol/L; Vibrated 1-1.5 hour, filtering drying, the slag that then oven dry is obtained and bentonite are by 3: 1 to mix at 1: 1 by mass ratio; Carry out roasting at 500-700 ℃, process the steel slag composite adsorbing agent of 3-5cm different-grain diameter.
2. the preparation method of a steel slag composite adsorbing agent as claimed in claim 1 is characterized in that this method mainly may further comprise the steps:
(1), utilize jaw formula or oppositely rolling roller crusher with slag crushing, and adopt dry type or wet screening classification to obtain the slag of 60-80 order granularity;
(2), the slag that obtains is added respectively in the sulfuric acid that concentration is 0.5-3.0mol/L, vibrated filtering drying 1-1.5 hour;
(3), the slag for preparing of step (2) mixes by 1: 1 to 3: 1 with bentonite, carries out roasting at 500-700 ℃;
(4), the slag after the roasting is processed the steel slag composite adsorbing agent of 3-5cm different-grain diameter.
3. steel slag composite adsorbing agent as claimed in claim 1, it is characterized in that: slag comprises open hearth slag, converter slag and electric furnace slag.
4. the method for steel slag composite adsorbing agent adsorption treatment dyeing waste water; It is characterized in that: in waste water, add a kind of steel slag composite adsorbing agent as claimed in claim 1 according to the 0.5-5% weight ratio; 5-20 minute adsorption treatment time, percent of decolourization reaches 98-99.5%, and the COD clearance is 80-85%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200910265085 CN101716487B (en) | 2009-12-31 | 2009-12-31 | Steel slag composite adsorbing agent and method for processing printing and dyeing wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200910265085 CN101716487B (en) | 2009-12-31 | 2009-12-31 | Steel slag composite adsorbing agent and method for processing printing and dyeing wastewater |
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| Publication Number | Publication Date |
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| CN101716487A CN101716487A (en) | 2010-06-02 |
| CN101716487B true CN101716487B (en) | 2012-05-23 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350296B (en) * | 2011-10-26 | 2013-04-24 | 安徽工业大学 | Preparation method of magnetic mesoporous adsorption material for cationic dye |
| CN102698708A (en) * | 2012-05-24 | 2012-10-03 | 武汉工程大学 | Method for preparing adsorbing material by modifying iron-based superfine powder composite material |
| CN103508507B (en) * | 2012-06-29 | 2015-12-02 | 南京理工大学 | The removal of the steel slag tailings after magnetic separation underwater gold is utilized to belong to the method for ion |
| CN103087719B (en) * | 2013-01-15 | 2015-01-14 | 浙江大学 | Preparation method, using method and application of ferrous poison control agent of cold waterlogged paddy field |
| CN103182292B (en) * | 2013-04-08 | 2014-12-17 | 重庆大学 | Novel Cr (VI) adsorbent and preparation method thereof |
| CN105293750A (en) * | 2014-06-29 | 2016-02-03 | 上海梅山钢铁股份有限公司 | Method for reducing industrial wastewater hardness with steelmaking waste slag |
| CN104874402B (en) * | 2015-04-20 | 2017-03-15 | 成都信息工程学院 | The preparation of converter slag containing vanadium and titanium oxides base zinc ferrite catalyst and the method for processing dyeing waste water |
| CN104888689A (en) * | 2015-07-03 | 2015-09-09 | 武汉工程大学 | Preparation method of modified iron-based adsorbing material |
| CN106824051B (en) * | 2017-02-27 | 2019-03-29 | 北京科技大学 | A kind of preparation method of nitrate adsorbent |
| CN107324473B (en) * | 2017-06-24 | 2021-04-30 | 义乌市君胜科技有限公司 | Method for preparing composite phosphorus removal agent based on converter steel slag |
| CN108554379B (en) * | 2018-05-16 | 2020-12-08 | 辽宁大学 | Adsorbent based on waste steel slag and preparation method and application thereof |
| 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 |
| CN109452125B (en) * | 2018-11-15 | 2022-02-01 | 泉州师范学院 | Preparation method and application of composite mineral aggregate module |
Citations (1)
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| CN101264441A (en) * | 2008-05-09 | 2008-09-17 | 成都信息工程学院 | Modified steel scoria adsorbent and preparation thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101264441A (en) * | 2008-05-09 | 2008-09-17 | 成都信息工程学院 | Modified steel scoria adsorbent and preparation thereof |
Non-Patent Citations (4)
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| G. Jock Churchman.Formation of complexes between bentonite and different cationic polyelectrolytes and their use as sorbents for non-ionic and anionic pollutants.《Applied Clay Science》.2002,第21卷177– 189. * |
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