CN102614854A - Method for preparaing dephosphorized and ferrum-carried activated carbon adsorbent - Google Patents
Method for preparaing dephosphorized and ferrum-carried activated carbon adsorbent Download PDFInfo
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- CN102614854A CN102614854A CN2012100912179A CN201210091217A CN102614854A CN 102614854 A CN102614854 A CN 102614854A CN 2012100912179 A CN2012100912179 A CN 2012100912179A CN 201210091217 A CN201210091217 A CN 201210091217A CN 102614854 A CN102614854 A CN 102614854A
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Abstract
The invention belongs to the technical field of sewage treatment, in particular to a method for preparaing dephosphorized and ferrum-carried activated carbon adsorbent, which comprises the following steps of: soaking powdered activated carbon through hydrochloric acid, washing through water, and drying at the temperature of 100-150 DEG C; injecting the obtained activated carbon into strong oxidizing acid solution so as to be soaked, rinsing, and drying a rinsed sample; and finally, mixing the obtained activated carbon and inorganic ferric salt solution, stirring, re-drying, cooling to room temperature, removing surface layer coverings, washing unloaded ferric oxide through water until rinsing to be without obvious color and without red color through test by potassium rhodanide solution, and drying continuously to obtain the high-efficient dephosphorized activated carbon adsorbent rich in iron oxide compound. Compared with the prior art, the method has the advantages of simplicity, moderate preparing condition, easiness in implementation, strong operability, high processing efficacy for waste water containing phosphorus, and purification cost reduction.
Description
Technical field
The invention belongs to technical field of sewage, be specifically related to a kind of preparation method of modified activated carbon absorbent.
Background technology
At present, waste water dephosphorization technology both domestic and external mainly is divided into two big types: bioanalysis dephosphorization, physico-chemical process dephosphorization.The physico-chemical process dephosphorization can be divided into chemical precipitation method, electric flocculence, crystallisation, absorption method etc. again.Wherein, the absorption method dephosphorization technique since easy to operate, efficient fast, non-secondary pollution, recyclable utilization, adsorbent activity point enriches and it is with low cost, has become the research focus of treatment of Phosphorus Containing Waste Water.
The absorption method dephosphorization technique is to utilize some porous or bigger serface material, mainly through phosphorus in surface precipitation, the ion-exchange of adsorbent surface or adhere to the dephosphorization process that absorption etc. is used for realizing waste water; Utilize the absorption-desorption method, realize the elimination of phosphorus pollution and the recovery of phosphor resource simultaneously.Adsorbent without any processing is limited in one's ability to the removal of phosphorus; The adsorbent of absorption method dephosphorization generally all is after modification, to demonstrate phosphorus absorption property preferably; Mainly contain methods such as sour modification, slaine modification, heat treatment; Leading adsorbing all is chemisorbed basically, also has hydrogen bond action, Lewis acid-base function, electrostatic adsorption, surface precipitation reaction and ion exchange etc. in addition in the adsorption process.Because the remarkable superiority of absorption method dephosphorization, especially for the deep phosphorous removal of low-concentration phosphorus-containing wastewater, the research and development of various adsorbents have demonstrated increasing trend.
Active carbon is widely used in water treatment field as adsorbent because of its huge specific area and pore volume thereof; Many in the processing of organic wastewater and heavy metal wastewater thereby is used for a long time; And it has limited its application in inorganic phosphorated purification of waste water is handled to the more weak adsorption capacity of inorganic pollution, and this is main relevant with the physico-chemical property of active carbon itself.In recent years; Correlative study shows; At the higher active material that is different from the active carbon body of activated carbon surface load layer of active is a kind of effective method of modifying, and mostly the active material of institute's load is metal oxide, through changing the physico-chemical property of activated carbon surface; Increase its surface-active site, improved the adsorption capacity of active carbon.Chinese patent, publication number are that CN102247804A discloses the preparation method that load has the NACF dephosphorization agent of lanthanum hydroxide; Chinese patent, publication number are that CN102008940A discloses the preparation method that load has the NACF dephosphorization agent of lanthana; The prepared dephosphorization agent of above preparation method all shows adsorption effect preferably, but used metal oxide is that lanthana, lanthanum hydroxide price are high in the preparation process, has increased the cost of modified activated carbon.Chinese patent; Publication number is the preparation method that CN101757892A discloses bagasse active carbon/ferric oxide, and the absorption that the gained finished product is used for phosphorus has obtained good result; This invention has reduced the production cost of adsorbent; But active carbon and iron oxide mixture need to carry out the high temperature carbonization processing at 400 ~ 600 ℃ in the preparation process, preparation condition is had relatively high expectations, and certain charcoal loss late is arranged.In recent years, researcher has carried out a large amount of research to carrying iron charcoal treatment inorganic wastewater both at home and abroad, and has obtained very big success, but some problems in specific operation process, also occurred:
1) adopting coprecipitation, is that modified material mixes with active carbon with the sulfate or the chloride of iron, and prepared year iron active carbon has certain magnetic under higher pH condition; Can realize separating fast after absorption is accomplished; But adopt the product of this method preparation, the bond strength of surface oxidation iron and absorbent charcoal carrier a little less than, in water-washing process; Possibly cause a large amount of iron oxide to come off, poor for the adsorption effect of pollutant;
2) adopt infusion process, molysite, active carbon and distilled water according to certain proportioning, are often existed molysite leaching in the adsorption process, the lower problem of absorption saturated capacity through regulating prepared year iron active carbon of suitable pH value in application process.
Summary of the invention
The object of the present invention is to provide a kind of with low cost, the charcoal loss late is little, adsorption efficiency is high, ironwork property carbon adsorbent is carried in the dephosphorization of environmental protection preparation method.It utilizes novel year ironwork property carbon adsorbent to remove ubiquitous Phos pollutant in the waste water, has realized effective utilization of molysite and effective removal of water body Phos pollutant.
The preparation method of ironwork property carbon adsorbent is carried in dephosphorization provided by the present invention; Adopt direct evaporation; With the Powdered Activated Carbon for preparing by conventional method is raw material, with after the inorganic iron salt solution mix under hot conditions heated at constant temperature a period of time, until the moisture evaporate to dryness.Its preparation process comprise the preliminary treatment, acidic oxidation of material powder active carbon handle, with the mixing of inorganic molysite, evaporation, washing processing, drying etc.
Its concrete steps are following:
(1) with salt soak Powdered Activated Carbon 12 ~ 24 h, to remove ash content, the organic matter of activated carbon surface, the distilled water with 90 ~ 100 ℃ after filtering cleans, in 100 ~ 105 ℃ of down dry 6 ~ 12 h;
(2) under the normal temperature, the active carbon of step (1) gained is injected the strong oxidizing property acid solution floods 12 ~ 24 h, leave standstill, filter, wash to pH constant, with the sample after the washing in 100 ~ 105 ℃ of drying 6 ~ 12 h;
(3), after fully stirring, evaporate fully until moisture in 110 ~ 120 ℃ of baking 24 ~ 48 h with prepared active carbon of step (2) and inorganic iron salt solution mix; Be cooled to room temperature; Remove the top layer covering, with the distilled water flush away iron oxide of load not, until washing till do not have obvious color and check redfree with potassium rhodanide solution; Continuation promptly obtains being rich in the efficient dephosphorization acticarbon of iron oxide 100 ~ 105 ℃ of oven dry down.
Among the present invention, the raw material of the said Powdered Activated Carbon of step (1) is with various carbonaceous materials, and like gained after high temperature carbonization, activation under the inert gas conditions such as timber, stalk, pitch, its specific area is 1250 ~ 1410m
2/ g, pore volume is 0.8 ~ 1.0cm
3/ g, average pore size is 2.0 ~ 3.5 nm; Be the active carbon of raw material gained preferably with timber, stalk;
Among the present invention, the said hydrochloric acid solution pH of step (1) is 1 ~ 3.
Among the present invention, the said strong oxidizing property acid solution of step (2) is a kind of in nitric acid, the sulfuric acid; Preferred nitric acid; The mass content of strong oxidizing property acid solution is 20% ~ 45%, with the mass ratio of Powdered Activated Carbon be 3:1 ~ 6:1.
Among the present invention, the mixed solution pH of said active carbon of step (3) and inorganic molysite is 1 ~ 3.
Among the present invention, the said inorganic molysite of step (3) is a kind of in ferrous sulfate, the iron chloride.The preferably sulfuric acid ferrous salt.
Among the present invention, the molar concentration of the used inorganic molysite of step (3) is 0.1 ~ 0.5mol/L, with the mass ratio of Powdered Activated Carbon be 8:1 ~ 12:1.
The invention has the advantages that: one,, can regulate and control the active carbon physico-chemical property to a certain extent through regulating the kind and the quality of used inorganic molysite; Two, the molysite that is flooded can get into the active carbon endoporus, does not in use have molysite and leaches; Three, no charcoal loss late in the preparation process; Four, the active carbon of invention gained has improved the adsorbance to phosphorus, and is high to the treatment effeciency of phosphorus-containing wastewater.
The specific embodiment
Following examples will be further described the present invention.
Embodiment 1
1, a kind of preparation method of carrying ironwork property carbon adsorbent who is used for treatment of Phosphorus Containing Waste Water comprises the steps:
(1) soaks Powdered Activated Carbon 12 h with the hydrochloric acid solution of pH=2,, filter the back with 90 ℃ distilled water cleaning many times, dry 6 h under 100 ℃ with the ash content of removing activated carbon surface, organic matter etc.; Wherein, selected powder activity carbon feedstock is that its specific area is 1370.24m with pitch gained after high temperature carbonization, activation under the inert gas conditions
2/ g, pore volume is 0.91cm
3/ g, average pore size is 2.6 nm;
(2) under the normal temperature, be dipping 24 h in 30% the sulfuric acid solution with the active carbon implantation quality content of step (1) gained, the mass ratio of sulfuric acid solution and Powdered Activated Carbon is 5:1, leaves standstill, and filters, wash to pH constant, with the sample after washing in 105 ℃ of dry 6h;
(3) the prepared active carbon of step (2) is mixed with the ferrous sulfate salting liquid, control molysite molar concentration is 0.25mol/L, with the mass ratio of Powdered Activated Carbon be 12:1; Regulator solution pH is 1, after fully stirring, evaporates fully until moisture in 120 ℃ of baking 24h; Be cooled to room temperature; Remove the top layer covering, with the distilled water flush away iron oxide of load not, until washing till do not have obvious color and check redfree with potassium rhodanide solution; Continuation promptly obtains being rich in the efficient dephosphorization acticarbon of iron oxide 100 ℃ of oven dry down.
Embodiment 2
1, a kind of preparation method of carrying ironwork property carbon adsorbent who is used for treatment of Phosphorus Containing Waste Water comprises the steps:
(1) soaks Powdered Activated Carbon 24 h with the hydrochloric acid solution of pH=3,, filter the back with 100 ℃ distilled water cleaning many times, dry 6 h under 105 ℃ with the ash content of removing activated carbon surface, organic matter etc.; Wherein, selected powder activity carbon feedstock is that its specific area is 1396.57m with timber gained after high temperature carbonization, activation under the inert gas conditions
2/ g, pore volume is 0.88cm
3/ g, average pore size is 3.0 nm;
(2) under the normal temperature, be to flood 12h in 40% the salpeter solution with the active carbon implantation quality content of step (1) gained, the mass ratio of salpeter solution and Powdered Activated Carbon is 6:1; Leave standstill; Filter, wash to pH constant, with the sample after the washing in 100 ℃ of drying 12 h;
(3) with prepared active carbon of step (2) and iron chloride salt solution mix, control molysite molar concentration is 0.2mol/L, with the mass ratio of Powdered Activated Carbon be 12:1; Regulator solution pH is 2, after fully stirring, evaporates fully until moisture in 110 ℃ of baking 48 h; Be cooled to room temperature; Remove the top layer covering, with the distilled water flush away iron oxide of load not, until washing till do not have obvious color and check redfree with potassium rhodanide solution; Continuation promptly obtains being rich in the efficient dephosphorization acticarbon of iron oxide 105 ℃ of oven dry down.
Embodiment 3
1, a kind of preparation method of carrying ironwork property carbon adsorbent who is used for treatment of Phosphorus Containing Waste Water comprises the steps:
(1) soaks Powdered Activated Carbon 24 h with the hydrochloric acid solution of pH=1,, filter the back with 100 ℃ distilled water cleaning many times, dry 12 h under 105 ℃ with the ash content of removing activated carbon surface, organic matter etc.; Wherein, selected powder activity carbon feedstock is that its specific area is 1406.10m with stalk gained after high temperature carbonization, activation under the inert gas conditions
2/ g, pore volume is 0.85cm
3/ g, average pore size is 2.4 nm;
(2) under the normal temperature, be to flood 12h in 34% the salpeter solution with the active carbon implantation quality content of step (1) gained, the mass ratio of salpeter solution and Powdered Activated Carbon is 4:1; Leave standstill; Filter, wash to pH constant, with the sample after the washing in 105 ℃ of drying 12 h;
(3) the prepared active carbon of step (2) is mixed with the ferrous sulfate salting liquid, control molysite molar concentration is 0.2mol/L, with the mass ratio of Powdered Activated Carbon be 10:1; Regulator solution pH is 2, after fully stirring, evaporates fully until moisture in 110 ℃ of baking 48 h; Be cooled to room temperature; Remove the top layer covering, with the distilled water flush away iron oxide of load not, until washing till do not have obvious color and check redfree with potassium rhodanide solution; Continuation promptly obtains being rich in the efficient dephosphorization acticarbon of iron oxide 105 ℃ of oven dry down.
Application example
Phosphorus-containing wastewater is adsorbed the removal experiment
Novel year iron active carbon is to the treatment effect of phosphorus-containing wastewater
Utilize above-mentioned made novel year iron active carbon Removal of Phosphorus in Wastewater; Experimental result shows that novel year iron active carbon after the modification has the advantages that to the processing of phosphorus-containing wastewater consumption is few, removal effect is good; Clearance can reach more than 84%; Compare with the common commercial active carbon, have tangible practical value.
Claims (7)
1. the preparation method of ironwork property carbon adsorbent is carried in a dephosphorization, it is characterized in that concrete steps are following:
(1) with salt soak Powdered Activated Carbon 12 ~ 24 h, to remove ash content, the organic matter of activated carbon surface, the distilled water with 90 ~ 100 ℃ after filtering cleans, in 100 ~ 105 ℃ of down dry 6 ~ 12 h;
(2) under the normal temperature, the active carbon of step (1) gained is injected the strong oxidizing property acid solution floods 12 ~ 24 h, leave standstill, filter, wash to pH constant, with the sample after the washing in 100 ~ 105 ℃ of drying 6 ~ 12 h;
(3), after fully stirring, evaporate fully until moisture in 110 ~ 120 ℃ of baking 24 ~ 48 h with prepared active carbon of step (2) and inorganic iron salt solution mix; Be cooled to room temperature; Remove the top layer covering, with the distilled water flush away iron oxide of load not, until washing till do not have obvious color and check redfree with potassium rhodanide solution; Continuation promptly obtains being rich in the efficient dephosphorization acticarbon of iron oxide 100 ~ 105 ℃ of oven dry down.
2. the preparation method of ironwork property carbon adsorbent is carried in a kind of dephosphorization as claimed in claim 1, and the raw material ratio surface area that it is characterized in that Powdered Activated Carbon described in the step (1) is 1250 ~ 1410m
2/ g, pore volume is 0.8 ~ 1.0cm
3/ g, average pore size is 2.0 ~ 3.5 nm.
3. the preparation method of ironwork property carbon adsorbent is carried in a kind of dephosphorization as claimed in claim 1, it is characterized in that, hydrochloric acid solution pH is 1 ~ 3 described in the step (1).
4. the preparation method of ironwork property carbon adsorbent is carried in a kind of dephosphorization as claimed in claim 1, it is characterized in that strong oxidizing property acid solution described in the step (2) is a kind of in nitric acid, the sulfuric acid; The mass content of strong oxidizing property acid solution is 20% ~ 45%, with the mass ratio of Powdered Activated Carbon be 3:1 ~ 6:1.
5. the preparation method of ironwork property carbon adsorbent is carried in a kind of dephosphorization as claimed in claim 1, it is characterized in that the mixed solution pH of active carbon described in the step (3) and inorganic molysite is 1 ~ 3.
6. the preparation method of ironwork property carbon adsorbent is carried in a kind of dephosphorization as claimed in claim 1, it is characterized in that inorganic molysite described in the step (3) is a kind of in ferrous sulfate, the iron chloride.
7. the preparation method of ironwork property carbon adsorbent is carried in a kind of dephosphorization as claimed in claim 1, and the molar concentration that it is characterized in that used inorganic molysite in the step (3) is 0.1 ~ 0.5mol/L, with the mass ratio of Powdered Activated Carbon be 8:1 ~ 12:1.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190351A (en) * | 2014-08-20 | 2014-12-10 | 复旦大学 | Preparation method of dephosphorizing modified gravel adsorbent |
| CN106140085A (en) * | 2016-06-30 | 2016-11-23 | 安徽天顺环保设备股份有限公司 | A kind of preparation method of modified filter material |
| CN108031441A (en) * | 2017-12-25 | 2018-05-15 | 北京益清源环保科技有限公司 | There is the modified activated carbon absorbent of absorption property to the orthophosphates in water body |
| CN109589914A (en) * | 2018-11-09 | 2019-04-09 | 广州润方环保科技有限公司 | A kind of method and its application preparing magnetic bio charcoal using the synchronous pyrolysis of Chinese medicine dreg and magnetization |
| CN109589915A (en) * | 2018-11-09 | 2019-04-09 | 广州润方环保科技有限公司 | A kind of method and its application using iron and steel pickling waste liquid and the magnetic bio charcoal of agriculture and forestry organic waste material preparation removal Cr VI |
| CN109589913A (en) * | 2018-11-09 | 2019-04-09 | 广州润方环保科技有限公司 | A kind of magnetic bio charcoal and the preparation method and application thereof of quick removal methylene blue |
| CN110694591A (en) * | 2019-09-05 | 2020-01-17 | 武汉东湖科创中试基地科技有限公司 | Preparation method and application of Fe-GO/Cs composite microspheres |
| CN111995063A (en) * | 2020-08-18 | 2020-11-27 | 普罗生物技术（上海）有限公司 | Powdered activated carbon carrier and preparation method and application thereof |
| CN113385158A (en) * | 2021-04-28 | 2021-09-14 | 徐州华睿炭材料科技有限公司 | Preparation method of phosphorus removal activated carbon |
| CN113680321A (en) * | 2021-09-02 | 2021-11-23 | 安徽工业大学 | Iron-loaded activated carbon for synchronously and efficiently removing As (III) and Cr (VI) in water, preparation method and application thereof |
| CN113926424A (en) * | 2021-10-12 | 2022-01-14 | 北京尚水清源水处理技术有限公司 | Preparation method of phosphorus removal agent |
| CN115007109A (en) * | 2022-06-27 | 2022-09-06 | 南华大学 | Ferric nitrate modified biochar and preparation method and application thereof |
| CN115155542A (en) * | 2022-02-22 | 2022-10-11 | 武汉轻工大学 | Preparation method of phosphorus removal agent and packed column |
| CN116715357A (en) * | 2023-08-11 | 2023-09-08 | 上海勘测设计研究院有限公司 | Composite filler, denitrification filter and denitrification method for sulfur autotrophic denitrification biological denitrification |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041436A (en) * | 2007-03-09 | 2007-09-26 | 朝阳森塬活性炭有限公司 | Special activated charcoal for gasoline vapor adsorption and preparation method thereof |
| CN101269811A (en) * | 2008-05-08 | 2008-09-24 | 华东理工大学 | Preparation method for high-carbon yield asphalt group spherical absorbent charcoal |
| CN101700885A (en) * | 2009-11-04 | 2010-05-05 | 大连理工大学 | Method for preparing activated carbon with high specific surface area |
| CN101757892A (en) * | 2010-01-02 | 2010-06-30 | 桂林理工大学 | Preparation method of bagasse active carbon/ferric oxide |
| CN101913676A (en) * | 2010-08-04 | 2010-12-15 | 南京信息工程大学 | Method for removing phosphorus in water by utilizing ferric salt-modified eggshells |
-
2012
- 2012-03-31 CN CN2012100912179A patent/CN102614854A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041436A (en) * | 2007-03-09 | 2007-09-26 | 朝阳森塬活性炭有限公司 | Special activated charcoal for gasoline vapor adsorption and preparation method thereof |
| CN101269811A (en) * | 2008-05-08 | 2008-09-24 | 华东理工大学 | Preparation method for high-carbon yield asphalt group spherical absorbent charcoal |
| CN101700885A (en) * | 2009-11-04 | 2010-05-05 | 大连理工大学 | Method for preparing activated carbon with high specific surface area |
| CN101757892A (en) * | 2010-01-02 | 2010-06-30 | 桂林理工大学 | Preparation method of bagasse active carbon/ferric oxide |
| CN101913676A (en) * | 2010-08-04 | 2010-12-15 | 南京信息工程大学 | Method for removing phosphorus in water by utilizing ferric salt-modified eggshells |
Non-Patent Citations (1)
| Title |
|---|
| 葛磊等: "活性炭负载水合氧化铁对草甘膦吸附性能的研究", 《环境工程学报》, vol. 3, no. 10, 31 October 2009 (2009-10-31), pages 1746 - 1748 * |
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| CN104190351A (en) * | 2014-08-20 | 2014-12-10 | 复旦大学 | Preparation method of dephosphorizing modified gravel adsorbent |
| CN106140085A (en) * | 2016-06-30 | 2016-11-23 | 安徽天顺环保设备股份有限公司 | A kind of preparation method of modified filter material |
| CN108031441A (en) * | 2017-12-25 | 2018-05-15 | 北京益清源环保科技有限公司 | There is the modified activated carbon absorbent of absorption property to the orthophosphates in water body |
| CN109589914A (en) * | 2018-11-09 | 2019-04-09 | 广州润方环保科技有限公司 | A kind of method and its application preparing magnetic bio charcoal using the synchronous pyrolysis of Chinese medicine dreg and magnetization |
| CN109589915A (en) * | 2018-11-09 | 2019-04-09 | 广州润方环保科技有限公司 | A kind of method and its application using iron and steel pickling waste liquid and the magnetic bio charcoal of agriculture and forestry organic waste material preparation removal Cr VI |
| CN109589913A (en) * | 2018-11-09 | 2019-04-09 | 广州润方环保科技有限公司 | A kind of magnetic bio charcoal and the preparation method and application thereof of quick removal methylene blue |
| CN110694591A (en) * | 2019-09-05 | 2020-01-17 | 武汉东湖科创中试基地科技有限公司 | Preparation method and application of Fe-GO/Cs composite microspheres |
| CN111995063A (en) * | 2020-08-18 | 2020-11-27 | 普罗生物技术（上海）有限公司 | Powdered activated carbon carrier and preparation method and application thereof |
| CN113385158A (en) * | 2021-04-28 | 2021-09-14 | 徐州华睿炭材料科技有限公司 | Preparation method of phosphorus removal activated carbon |
| CN113680321A (en) * | 2021-09-02 | 2021-11-23 | 安徽工业大学 | Iron-loaded activated carbon for synchronously and efficiently removing As (III) and Cr (VI) in water, preparation method and application thereof |
| CN113680321B (en) * | 2021-09-02 | 2024-04-02 | 安徽工业大学 | Iron-carrying activated carbon for synchronously and efficiently removing As (III) and Cr (VI) in water, preparation method and application thereof |
| CN113926424A (en) * | 2021-10-12 | 2022-01-14 | 北京尚水清源水处理技术有限公司 | Preparation method of phosphorus removal agent |
| CN115155542A (en) * | 2022-02-22 | 2022-10-11 | 武汉轻工大学 | Preparation method of phosphorus removal agent and packed column |
| CN115155542B (en) * | 2022-02-22 | 2023-09-12 | 武汉轻工大学 | Preparation method of dephosphorizing agent and packing column |
| CN115007109A (en) * | 2022-06-27 | 2022-09-06 | 南华大学 | Ferric nitrate modified biochar and preparation method and application thereof |
| CN116715357A (en) * | 2023-08-11 | 2023-09-08 | 上海勘测设计研究院有限公司 | Composite filler, denitrification filter and denitrification method for sulfur autotrophic denitrification biological denitrification |
| CN116715357B (en) * | 2023-08-11 | 2023-10-31 | 上海勘测设计研究院有限公司 | Composite filler, denitrification filter and denitrification method for sulfur autotrophic denitrification biological denitrification |
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Application publication date: 20120801 |