CN103521168A - Preparation method and application of magnetic mineral composite material - Google Patents
Preparation method and application of magnetic mineral composite material Download PDFInfo
- Publication number
- CN103521168A CN103521168A CN201310487228.3A CN201310487228A CN103521168A CN 103521168 A CN103521168 A CN 103521168A CN 201310487228 A CN201310487228 A CN 201310487228A CN 103521168 A CN103521168 A CN 103521168A
- Authority
- CN
- China
- Prior art keywords
- tri
- silica
- iron tetroxide
- tobermorite
- synthetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a preparation method and application of a tobermorite@silicon dioxide/ferroferric oxide magnetic mineral composite material. The method mainly comprises the following steps: 1) synthesizing ferroferric oxide by a coprecipitation process; 2) synthesizing ferroferric oxide/silicon dioxide; and 3) synthesizing the tobermorite@silicon dioxide/ferroferric oxide magnetic mineral composite material by a hydrothermal process. After 2.0-5.0g of the tobermorite@silicon dioxide/ferroferric oxide magnetic mineral composite material is added to every liter of 1-100mg/L phosphorus-containing wastewater and stirred for 30-60 minutes, the phosphorus content of the effluent water reaches the national discharge standard Grade 1. The tobermorite@silicon dioxide/ferroferric oxide magnetic mineral composite material has the advantages of stable performance, no environment pollution and the like. The tobermorite@silicon dioxide/ferroferric oxide magnetic mineral composite material has the characteristics of high dephosphorization efficiency and excellent magnetic property, is convenient and quick in the recovery process, and therefore, has favorable development prospects in the field of environmental wastewater dephosphorization.
Description
Technical field
The present invention originally belongs to environmental pollution improvement's field of waste water treatment, relates to a kind of preparation method and application of magnetic mineral composite of tobermorite@silica/tri-iron tetroxide.
Background technology
Along with improving constantly of economic fast development and industrialization degree, the sanitary sewage of rich Nitrogen-and Phosphorus-containing and to contain the residual agricultural effluent sewage quantity of agriculture chemical more and more higher, cause the waste water that contains a large amount of nutritional labelings to enter closed water area, to receiving water body, work the mischief.At present, China's water body particularly the eutrophication phenomenon of inland lake be on the rise.So, strengthen the processing of phosphor in sewage, the strict content of controlling phosphorus in discharge water outlet, just seems particularly important.Waste water dephosphorization is mainly divided into physico-chemical process dephosphorization and Biological Phosphorus Removal Processes etc.
Along with the proposition of green economy concept, natural sorbing material is subject to having deep love for of numerous scientific research persons for dephosphorization process.Natural sorbing material mainly comprises that clay mineral, as zeolite, rod soil, bentonite, imvite etc., also has trade waste as blast furnace slag, flyash, ardealite etc.These sorbing materials can be applied to water treatment widely.Dong Yuanhua, Zhang Jun etc. utilize and attapulgite modified ammonium nitrogen and phosphate radical are carried out to adsorption test, result shows, the attapulgite modified tp removal rate to V class waste water can reach 95%, and the parameters such as pH, adsorption time, Adsorption thermodynamics and dynamics have also been inquired in experiment.Wu Deyi etc. utilizes the removal experiment of the flyash of modification to ammonium nitrogen and phosphorus, and result shows that modified coal ash also has desirable ammonium nitrogen and tp removal rate, and a series of conditions such as pH, temperature have also been inquired in experiment simultaneously.In addition, flyash can also be as raw material synthetic zeolite, Fu Keming, horse great writing etc. with flyash success synthesized 4A and 13X molecular sieve, and inquired into the impact of the conditions such as silica alumina ratio, synthesis temperature, basicity, time, also utilize synthetic molecular sieve to carry out adsorption experiment to ammonium nitrogen and phosphorus-containing wastewater simultaneously.Natural sorbing material and activated alumina adsorption capacity are not ideal enough, force people will more experience to turn to and manually close sorbing material.
In order to overcome the problem of above existence, researchers concentrate the artificial synthetic sorbing material of research and development to widen the range of application of sorbing material and overcome absorption environmental limit, have obtained in recent years development faster.But these artificial synthetic sorbing materials exist and are difficult to reclaim, and environment are existed to the defects such as secondary pollution.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of preparation method and application of magnetic mineral composite of tobermorite@silica/tri-iron tetroxide are provided, this magnetic mineral composite preparation manipulation is simple, tp removal rate is high, result of use is good, it is convenient to reclaim, and in environmental pollution, the improvement of waste water dephosphorization provides new approaches.
Technical scheme of the present invention is:
The preparation method of magnetic mineral composite, is characterized in that comprising the following steps and carries out:
1) the synthetic tri-iron tetroxide of coprecipitation:
Take 3-5g FeCl
24H
2o and 8-14g FeCl
36H
2o, in same beaker, makes FeCl
2and FeCl
3mol ratio be 1:2, add 100ml distilled water to dissolve, then the NaOH solution that adds 10-15mL10mol/L in above-mentioned solution, above-mentioned mixed liquor is stirred to 1-1.5 hour under normal temperature, then temperature is elevated to 80-90 ℃ and continues to stir 1-1.5 hour, add the nitric acid of 0.3-0.5mL12mol/L at 90 ℃, to continue to stir 30 minutes, then the citric acid that adds 50mL-80ml0.2-0.5mol/L, continue to stir 30-60 minute, mixture is naturally cooling, filtration is repeatedly cleaned product with absolute ethyl alcohol, use magnet collecting reaction product, at 70-90 ℃, drying and obtaining black solid powder is tri-iron tetroxide,
(2) silica/tri-iron tetroxide is synthetic:
Take the synthetic Fe of 0.02g-0.05g step (1)
3o
4in clean beaker, with absolute alcohol, wash twice, then add 60-80mL absolute alcohol, 0.4-0.6mL ethyl orthosilicate (TEOS), ultrasonic 15-30min, mixture is placed in reactor, at 120-150 ℃, reacts 12-18 hour, product is cleaned with absolute ethyl alcohol, at 70-90 ℃, dries and obtains silica/tri-iron tetroxide;
(3) tobermorite@silica/tri-iron tetroxide is synthetic:
Take the synthetic silica/tri-iron tetroxide 0.1-0.2g of step (2) and 2-4g diatomite, 1-2gCaO, 25-30mLH
2o mixes, on ultrasonic cleaning instrument, ultrasonic 30min is placed in reactor, be heated to 120-200 ℃ and successive reaction 8-12h, product is dried the magnetic mineral composite that obtains tobermorite@silica/tri-iron tetroxide after distilled water is cleaned at 70-90 ℃.
In step (3), diatomaceous active silica content is not less than 80%.
The application of magnetic mineral composite prepared by the present invention, it is characterized in that: the magnetic mineral composite mass concentration that adds prepared tobermorite silica/tri-iron tetroxide in the waste water that is 1mg/L-100mg/L containing phosphorus concentration is 2.0-5.0g/L, mixing time is 30-60min, in water outlet waste water, residual phosphorus content reaches national grade one discharge standard, tobermorite@silica/tri-iron tetroxide carries out the recovery of magnetic solid-liquid with magnet, after oven dry, can recycle.
Compared with prior art, its advantage and beneficial effect are in the present invention:
One is introduced tri-iron tetroxide in traditional sorbing material, is conducive to recycling and reclaiming of sorbing material.
Its two, with diatomite, substitute sodium metasilicate, the cost of raw material reduces, and adsorption effect to be better than sodium metasilicate synthetic, this is because contain a small amount of aluminium oxide in diatomite, has improved the absorption property of composite.
The present invention is raw materials used all to be bought and obtains from market.
The magnetic mineral composite of the synthetic tobermorite@silica/tri-iron tetroxide of the present invention, has easy and simple to handle, stable performance, absorption property is high, environmental nonpollution, and convenient recovery, the advantages such as recycling, have very high practical value.
Accompanying drawing explanation:
Fig. 1 a is the TEM figure of the synthetic tri-iron tetroxide of the present invention.
Fig. 1 b is the TEM figure of the synthetic silica/tri-iron tetroxide of the present invention.
Fig. 1 c is the TEM figure of the synthetic tobermorite@silica/tri-iron tetroxide of the present invention.
Fig. 1 d is the TEM figure of tobermorite.
In Fig. 2, a, b, c, e, f are respectively the XRD figure of the synthetic tobermorite@silica/tri-iron tetroxide of the embodiment of the present invention.
Fig. 3 a is the TEM figure before tobermorite@silica/tri-iron tetroxide Phosphate Sorption of the present invention.
Fig. 3 b is the TEM figure after tobermorite@silica/tri-iron tetroxide Phosphate Sorption of the present invention.
The specific embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
1) tri-iron tetroxide is synthetic: take 3.135g FeCl
24H
2o and 8.524g FeCl
36H
2o, in same beaker, makes FeCl
2and FeCl
3mol ratio be 1:2, add 100mL intermediate water to dissolve, then in above-mentioned solution, add the NaOH solution of 12.7mL10mol/L.Above-mentioned mixed liquor stirs 1 hour under normal temperature, then temperature is elevated to 90 ℃ and continues to stir 1 hour, adds about 0.33mL12mol/L nitric acid at 90 ℃, to continue to stir 30 minutes, then adds the citric acid of 50mL0.5mol/L, continues to stir 30 minutes.Mixture is naturally cooling, filters with absolute ethyl alcohol and repeatedly cleans product, with magnet collecting reaction product Fe
3o
4, at 80 ℃, dry.
2) silica/tri-iron tetroxide is synthetic
Take the above-mentioned synthetic tri-iron tetroxide of 0.03g in clean beaker, with absolute alcohol, wash twice, then add 60mL absolute alcohol, 0.5mLTEOS, ultrasonic 15min, mixture is placed in reactor, reacts 12 hours at 120 ℃.Product is cleaned with absolute ethyl alcohol, at 80 ℃, dries and obtains silica/tri-iron tetroxide.
3) tobermorite@silica/tri-iron tetroxide is synthetic
Get above-mentioned synthetic silica/tri-iron tetroxide 0.1g and 2.830g diatomite, 1.536gCaO, 25mLH
2o mixes, and on ultrasonic cleaning instrument, ultrasonic 30min is placed in reactor, is heated to 180 ℃ and successive reaction 10h.Product is dried and is obtained tobermorite@silica/tri-iron tetroxide after intermediate water is cleaned at 80 ℃.The synthetic XRD figure of tobermorite@silica/tri-iron tetroxide prepared by the present embodiment is as shown in a in Fig. 2.
4) above-mentioned synthetic tobermorite@silica/tri-iron tetroxide Removal of Phosphorus in Wastewater
Getting above-mentioned synthetic tobermorite@silica/tri-iron tetroxide 0.05g puts in the solution containing phosphate that 10mL concentration is 8.0mg/L, 30min vibrates on cyclotron oscillation device, mixture after vibration carries out magnetic Separation of Solid and Liquid with magnet, and phosphorous in solution is 0.03mg/l.
Embodiment 2
1) tri-iron tetroxide is synthetic: take 3.762FeCl
24H
2o and 10.229g FeCl
36H
2o, in same beaker, makes FeCl
2and FeCl
3mol ratio be 1:2, add 100mL intermediate water to dissolve, then in above-mentioned solution, add the NaOH solution of 15.0mL10mol/L.Above-mentioned mixed liquor stirs 1 hour under normal temperature, then temperature is elevated to 85 ℃ and continues to stir 1.5 hours, adds about 0.3mL12mol/L nitric acid at 90 ℃, to continue to stir 30 minutes, then adds the citric acid of 80mL0.3mol/L, continues to stir 60 minutes.Mixture is naturally cooling, overanxiously with absolute ethyl alcohol, repeatedly cleans product, with magnet collecting reaction product Fe
3o
4, at 90 ℃, dry.
2) silica/tri-iron tetroxide is synthetic
Take the above-mentioned synthetic tri-iron tetroxide of above-mentioned 0.042g in clean beaker, with absolute alcohol, wash twice, then add 72mL absolute alcohol, 0.6mLTEOS, ultrasonic 30min, mixture is placed in reactor, reacts 15 hours at 150 ℃.Product is cleaned with absolute ethyl alcohol, at 90 ℃, dries and obtains silica/tri-iron tetroxide.
3) tobermorite@silica/tri-iron tetroxide is synthetic
Get above-mentioned synthetic silica/tri-iron tetroxide 0.12g and 3.396g diatomite, 1.843gCaO, 30mLH
2o mixes, and on ultrasonic cleaning instrument, ultrasonic 30min is placed in reactor, is heated to 120 ℃ and successive reaction 12h.Product is dried and is obtained tobermorite@silica/tri-iron tetroxide after intermediate water is cleaned at 90 ℃.The synthetic XRD figure of tobermorite@silica/tri-iron tetroxide prepared by the present embodiment is as shown in b in Fig. 2.
4) tobermorite@silica/tri-iron tetroxide Removal of Phosphorus in Wastewater
Getting above-mentioned synthetic tobermorite@silica/tri-iron tetroxide 0.04g puts in the solution containing phosphate that 20mL concentration is 30.0mg/L, 60min vibrates on cyclotron oscillation device, mixture after vibration carries out magnetic Separation of Solid and Liquid with magnet, and phosphorous in solution is 0.12mg/l.
Embodiment 3
1) tri-iron tetroxide is synthetic: take 3.647g FeCl
24H
2o and 9.917g FeCl
36H
2o, in same beaker, makes FeCl
2and FeCl
3mol ratio be 1:2, add 100mL intermediate water to dissolve, then in above-mentioned solution, add the NaOH solution of 10mL10mol/L.Above-mentioned mixed liquor stirs 1.5 hours under normal temperature, then temperature is elevated to 80 ℃ and continues to stir 1.5 hours, adds about 0.5mL12mol/L nitric acid at 90 ℃, to continue to stir 30 minutes, then adds the citric acid of 55mL0.3mol/L, continues to stir 30 minutes.Mixture is naturally cooling, overanxiously with absolute ethyl alcohol, repeatedly cleans product, with magnet collecting reaction product Fe
3o
4, at 70 ℃, dry.
2), silica/tri-iron tetroxide is synthetic
Take the above-mentioned synthetic tri-iron tetroxide of 0.05g in clean beaker, with absolute alcohol, wash twice, then add 68mL absolute alcohol, 0.55mLTEOS, ultrasonic 15min, mixture is placed in reactor, reacts 12 hours at 120 ℃.Product is cleaned with absolute ethyl alcohol, at 70 ℃, dries and obtains silica/tri-iron tetroxide.
3), tobermorite@silica/tri-iron tetroxide is synthetic
Get above-mentioned synthetic silica/tri-iron tetroxide 0.1g and 3.213g diatomite, 1.712gCaO, 30mLH
2o mixes, and on ultrasonic cleaning instrument, ultrasonic 30min is placed in reactor, is heated to 140 ℃ and successive reaction 12h.Product is dried and is obtained tobermorite@silica/tri-iron tetroxide after intermediate water is cleaned at 70 ℃.The synthetic XRD figure of tobermorite@silica/tri-iron tetroxide prepared by the present embodiment is as shown in c in Fig. 2.
4) tobermorite@silica/tri-iron tetroxide Removal of Phosphorus in Wastewater
Getting above-mentioned synthetic tobermorite@silica/tri-iron tetroxide 0.06g puts in the solution containing phosphate that 20mL concentration is 90mg/L, 40min vibrates on cyclotron oscillation device, mixture after vibration carries out magnetic Separation of Solid and Liquid with magnet, and phosphorous in solution is 0.153mg/l.
Embodiment 4
1) tri-iron tetroxide is synthetic: take 3.0g FeCl
24H
2o and 8.157g FeCl
36H
2o, in same beaker, makes FeCl
2and FeCl
3mol ratio be 1:2, add 100mL intermediate water to dissolve, then in above-mentioned solution, add the NaOH solution of 10mL10mol/L.Above-mentioned mixed liquor stirs 1.2 hours under normal temperature, then temperature is elevated to 80 ℃ and continues to stir 1.2 hours, adds about 0.5mL12mol/L nitric acid at 90 ℃, to continue to stir 30 minutes, then adds the citric acid of 55mL0.3mol/L, continues to stir 60 minutes.Mixture is naturally cooling, overanxiously with absolute ethyl alcohol, repeatedly cleans product, with magnet collecting reaction product Fe
3o
4, at 85 ℃, dry.
2), silica/tri-iron tetroxide is synthetic
Take the above-mentioned synthetic tri-iron tetroxide of 0.02g in clean beaker, with absolute alcohol, wash twice, then add 80mL absolute alcohol, 0.4mLTEOS, ultrasonic 20min, mixture is placed in reactor, reacts 18 hours at 140 ℃.Product is cleaned with absolute ethyl alcohol, at 85 ℃, dries and obtains silica/tri-iron tetroxide.
3), tobermorite@silica/tri-iron tetroxide is synthetic
Get above-mentioned synthetic silica/tri-iron tetroxide 0.2g and 2.0g diatomite, 2.0gCaO, 28mLH
2o mixes, and on ultrasonic cleaning instrument, ultrasonic 30min is placed in reactor, is heated to 120 ℃ and successive reaction 12h.Product is dried and is obtained tobermorite@silica/tri-iron tetroxide after intermediate water is cleaned at 85 ℃.The synthetic XRD figure of tobermorite@silica/tri-iron tetroxide prepared by the present embodiment is as shown in d in Fig. 2.
4) tobermorite@silica/tri-iron tetroxide Removal of Phosphorus in Wastewater
Getting above-mentioned synthetic tobermorite@silica/tri-iron tetroxide 0.08g puts in the solution containing phosphate that 20mL concentration is 70mg/L, 40min vibrates on cyclotron oscillation device, mixture after vibration carries out magnetic Separation of Solid and Liquid with magnet, and phosphorous in solution is 0.125mg/l.
Embodiment 5
1) tri-iron tetroxide is synthetic: take 5.0g FeCl
24H
2o and 13.595g FeCl
36H
2o, in same beaker, makes FeCl
2and FeCl
3mol ratio be 1:2, add 100mL intermediate water to dissolve, then in above-mentioned solution, add the NaOH solution of 12mL10mol/L.Above-mentioned mixed liquor stirs 1 hour under normal temperature, then temperature is elevated to 80 ℃ and continues to stir 1 hour, adds about 0.5mL12mol/L nitric acid at 90 ℃, to continue to stir 30 minutes, then adds the citric acid of 60mL0.3mol/L, continues to stir 40 minutes.Mixture is naturally cooling, overanxiously with absolute ethyl alcohol, repeatedly cleans product, with magnet collecting reaction product Fe
3o
4, at 85 ℃, dry.
2), silica/tri-iron tetroxide is synthetic
Take the above-mentioned synthetic tri-iron tetroxide of 0.05g in clean beaker, with absolute alcohol, wash twice, then add 75mL absolute alcohol, 0.6mLTEOS, ultrasonic 20min, mixture is placed in reactor, reacts 18 hours at 120 ℃.Product is cleaned with absolute ethyl alcohol, at 85 ℃, dries and obtains silica/tri-iron tetroxide.
3), tobermorite@silica/tri-iron tetroxide is synthetic
Get above-mentioned synthetic silica/tri-iron tetroxide 0.2g and 4.0g diatomite, 1.0gCaO, 25mLH
2o mixes, and on ultrasonic cleaning instrument, ultrasonic 30min is placed in reactor, is heated to 200 ℃ and successive reaction 8h.Product is dried and is obtained tobermorite@silica/tri-iron tetroxide after intermediate water is cleaned at 85 ℃.The synthetic XRD figure of tobermorite@silica/tri-iron tetroxide prepared by the present embodiment is as shown in e in Fig. 2.
4) tobermorite@silica/tri-iron tetroxide Removal of Phosphorus in Wastewater
Getting above-mentioned synthetic tobermorite@silica/tri-iron tetroxide 0.04g puts in the solution containing phosphate that 20mL concentration is 60mg/L, 50min vibrates on cyclotron oscillation device, mixture after vibration carries out magnetic Separation of Solid and Liquid with magnet, and phosphorous in solution is 0.115mg/l.
Claims (3)
1. the preparation method of magnetic mineral composite, is characterized in that comprising the following steps:
(1) the synthetic tri-iron tetroxide of coprecipitation:
Take 3-5g FeCl
24H
2o and 8-14g FeCl
36H
2o, in same beaker, makes FeCl
2and FeCl
3mol ratio be 1:2, add 100ml distilled water to dissolve, then the NaOH solution that adds 10-15mL10mol/L in above-mentioned solution, above-mentioned mixed liquor is stirred to 1-1.5 hour under normal temperature, then temperature is elevated to 80-90 ℃ and continues to stir 1-1.5 hour, add 0.3-0.5mL12mol/L nitric acid at 90 ℃, to continue to stir 30 minutes, then the citric acid that adds 50mL-80ml0.2-0.5mol/L, continue to stir 30-60 minute, mixture is naturally cooling, filtration is repeatedly cleaned product with absolute ethyl alcohol, use magnet collecting reaction product, at 70-90 ℃, drying and obtaining black solid powder is tri-iron tetroxide,
(2) silica/tri-iron tetroxide is synthetic:
Take the synthetic Fe of 0.02g-0.05g step (1)
3o
4in clean beaker, with absolute alcohol, wash twice, then add 60-80mL absolute alcohol, 0.4-0.6mL ethyl orthosilicate (TEOS), ultrasonic 15-30min, mixture is placed in reactor, at 120-150 ℃, reacts 12-18 hour, product is cleaned with absolute ethyl alcohol, at 70-90 ℃, dries and obtains silica/tri-iron tetroxide;
(3) tobermorite@silica/tri-iron tetroxide is synthetic:
Take the synthetic silica/tri-iron tetroxide 0.1-0.2g of step (2) and 2-4g diatomite, 1-2gCaO, 25-30mLH
2o mixes, on ultrasonic cleaning instrument, ultrasonic 30min is placed in reactor, be heated to 120-200 ℃ and successive reaction 8-12h, product is dried the magnetic mineral composite that obtains tobermorite@silica/tri-iron tetroxide after distilled water is cleaned at 70-90 ℃.
2. the preparation method of magnetic mineral composite according to claim 1, is characterized in that: in step (3), diatomaceous active silica content is not less than 80%.
3. the application of the magnetic mineral composite that prepared by the preparation method of magnetic mineral composite according to claim 1 and 2, it is characterized in that: the magnetic mineral composite mass concentration that adds prepared tobermorite silica/tri-iron tetroxide in the waste water that is 1mg/L-100mg/L containing phosphorus concentration is 2.0-5.0g/L, mixing time is 30-60min, in water outlet waste water, residual phosphorus content reaches national grade one discharge standard, tobermorite@silica/tri-iron tetroxide carries out the recovery of magnetic solid-liquid with magnet, after oven dry, can recycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310487228.3A CN103521168A (en) | 2013-10-17 | 2013-10-17 | Preparation method and application of magnetic mineral composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310487228.3A CN103521168A (en) | 2013-10-17 | 2013-10-17 | Preparation method and application of magnetic mineral composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103521168A true CN103521168A (en) | 2014-01-22 |
Family
ID=49923735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310487228.3A Pending CN103521168A (en) | 2013-10-17 | 2013-10-17 | Preparation method and application of magnetic mineral composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103521168A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110559985A (en) * | 2019-09-20 | 2019-12-13 | 南京信息工程大学 | Magnetic silicate adsorbent and preparation method thereof |
| CN112811706A (en) * | 2021-01-06 | 2021-05-18 | 北京国蓝环保科技有限公司 | Sewage treatment method based on heavy medium carrier |
| CN114212964A (en) * | 2021-12-13 | 2022-03-22 | 重庆德润环境有限公司 | Resource utilization method for river and lake dredging sediment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745700A (en) * | 2012-06-14 | 2012-10-24 | 湖北富邦科技股份有限公司 | Preparation method for synthesizing tobermorite through using blast furnace slag as raw material |
| JP2012240017A (en) * | 2011-05-23 | 2012-12-10 | Nittetsu Kankyo Engineering Kk | Treating material of harmful substance, and treating method of harmful substance |
| CN103068743A (en) * | 2010-06-01 | 2013-04-24 | 达姆施塔特技术大学 | Mixture for reducing the formation of magnesium ammonium phosphate (struvite) in clarification plants |
-
2013
- 2013-10-17 CN CN201310487228.3A patent/CN103521168A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103068743A (en) * | 2010-06-01 | 2013-04-24 | 达姆施塔特技术大学 | Mixture for reducing the formation of magnesium ammonium phosphate (struvite) in clarification plants |
| JP2012240017A (en) * | 2011-05-23 | 2012-12-10 | Nittetsu Kankyo Engineering Kk | Treating material of harmful substance, and treating method of harmful substance |
| CN102745700A (en) * | 2012-06-14 | 2012-10-24 | 湖北富邦科技股份有限公司 | Preparation method for synthesizing tobermorite through using blast furnace slag as raw material |
Non-Patent Citations (2)
| Title |
|---|
| HIROTAKA MAEDA ET AL.: ""Hydrothermal synthesis of tobermorite/hydroxyapatite composites"", 《MATERIALS LETTERS》, vol. 62, 23 February 2008 (2008-02-23), pages 2 * |
| SHUHUA ZHONG ET AL.: ""Hydrothermal synthesis of easy-recycled tobermorite/SiO2/Fe3O4 composites for efficient treatment of phosphorus in wastewater"", 《DESALINATION AND WATER TREATMENT》, vol. 52, 8 June 2013 (2013-06-08) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110559985A (en) * | 2019-09-20 | 2019-12-13 | 南京信息工程大学 | Magnetic silicate adsorbent and preparation method thereof |
| CN112811706A (en) * | 2021-01-06 | 2021-05-18 | 北京国蓝环保科技有限公司 | Sewage treatment method based on heavy medium carrier |
| CN114212964A (en) * | 2021-12-13 | 2022-03-22 | 重庆德润环境有限公司 | Resource utilization method for river and lake dredging sediment |
| CN114212964B (en) * | 2021-12-13 | 2024-03-15 | 重庆德润环境有限公司 | River and lake dredging sediment recycling method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102151546B (en) | Modified zeolite as well as preparation method and application thereof | |
| CN101913676B (en) | Method for removing phosphorus in water by utilizing ferric salt-modified eggshells | |
| CN106915972A (en) | A kind of modified coal ash haydite and its preparation method and application | |
| CN109534432A (en) | The preparation method of the biological carbon modified material of phosphorus in a kind of removal eutrophication water | |
| CN101913675B (en) | Method for removing phosphorus in water by modifying waste egg shell | |
| CN101797496A (en) | Preparation method of inorganic-organic compound-type adsorbent based on clinoptilolite and application for removing Cr(VI) in industrial waste water | |
| CN109482135A (en) | A kind of preparation method and application of calcium silicates adsorbent material | |
| CN105817196A (en) | High-aluminum fly ash heavy metal ion adsorbent and preparation method thereof | |
| CN103272566B (en) | Method for preparing ammonia nitrogen adsorbent by using banana peel and application of ammonia nitrogen adsorbent | |
| CN103288164A (en) | A method for synchronous nitrogen and phosphorus removal in sewage by combining modified zeolite and modified eggshell | |
| CN113070036A (en) | Biomass-based functional carbon, preparation method thereof and application of biomass-based functional carbon in removal of micro-plastics in water body | |
| CN103521168A (en) | Preparation method and application of magnetic mineral composite material | |
| CN110102246A (en) | A kind of magnetic layered double-metal hydroxide adsorbent and its dephosphorization remove chromium application | |
| CN106732428A (en) | A kind of absorption of drinking water heavy metal depth removal brews agent | |
| CN110270308A (en) | A kind of adsorbent and preparation method thereof for sewage treatment | |
| CN109126411A (en) | A kind of excess sludge load iron tailings modified adsorbent and preparation method thereof | |
| CN104261594A (en) | Method for treating medium-low concentration ammonia-nitrogen wastewater simply and effectively | |
| CN101519232B (en) | Method for reducing ammonia nitrogen in industrial wastewater | |
| CN113371783A (en) | Method for treating nitrogen and phosphorus wastewater by using water-quenched slag-fly ash-based 4A zeolite | |
| CN106111081B (en) | A kind of silica adsorbent and its preparation method and application of Zero-valent Iron/chitosan-modified | |
| CN112624247A (en) | Method for removing boron and phosphorus in wastewater by coupling shell powder | |
| CN112592011A (en) | Excess sludge cracking agent and preparation method and application thereof | |
| CN109179612A (en) | Using coal ash for manufacturing for the method for flocculant for sewage treatment | |
| CN109354331A (en) | A kind of method of biologic packing material anaerobic technique processing industrial wastewater | |
| CN117427618B (en) | Chitosan modified yellow phosphorus slag-bentonite composite material and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140122 |