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A method and carbon material for preparing iron-doped carbon material by using waste floc

A carbon material and iron-doped technology, applied in recycling technology, waste collector recycling, battery recycling, etc., can solve the problems of air secondary pollution, volume reduction, large land resources, etc., to protect the environment, protect the economy and generate income Effect

Active Publication Date: 2020-09-15
SHIHEZI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Flocculation sludge can generally be disposed of safely by landfill, but this method will occupy a large amount of land resources, site treatment and anti-seepage construction are not easy to meet the standards, improper collection and control of leachate may cause secondary pollution of the soil; flocculation sludge also Reduction and harmlessness can be achieved through incineration, which is an important means other than landfill
This method is a comprehensive process of pyrolysis and deep oxidation. Combustible solid waste can be oxidized and decomposed through incineration to reduce volume, remove toxicity, and recycle waste heat. The main disadvantage of the incineration method is that it requires a large investment and emits smoke during the incineration process. Cause secondary air pollution, and equipment corrosion is serious

Method used

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  • A method and carbon material for preparing iron-doped carbon material by using waste floc
  • A method and carbon material for preparing iron-doped carbon material by using waste floc
  • A method and carbon material for preparing iron-doped carbon material by using waste floc

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Embodiment 1

[0037] Embodiment 1: The embodiment of the present invention discloses a method for preparing iron-doped carbon material using waste flocs, including the following steps:

[0038] Step d: The dye wastewater comes from a local printing and dyeing enterprise. Take 5L dye wastewater. The concentration of dye wastewater is 450ppm, and the pH of the solution is adjusted to 8. Add cationic flocculant flocculant BADT-CTS(2,4-二(二甲) into the dye wastewater. Ammonia)-6-chloro-[1,3,5]-triazine-based chitosan ether, the flocculant concentration is controlled at 11g / L, stand for one day, remove the upper liquid, and centrifuge the lower solid to accelerate the solid-liquid separation , The centrifugal speed is 4500rpm, the centrifugal time is 10min, and the solid floc is obtained.

[0039] Step a: Dry the solid flocs obtained in step d at 120°C for 45 hours, grind them into a 120 mesh powder, and vacuum dry at 75°C for 8 hours to obtain dry flocculated sludge;

[0040] Mix the dry flocculation s...

Embodiment 2

[0044] Embodiment 2: The embodiment of the present invention discloses an iron-doped carbon material prepared from waste flocs. The preparation method includes the following steps:

[0045] Step d: The dye wastewater comes from a local printing and dyeing enterprise. Take 5L dye wastewater. The concentration of dye wastewater is 450ppm, and the pH of the solution is adjusted to 8. Add cationic flocculant flocculant BADT-CTS(2,4-二(二甲) into the dye wastewater. Ammonia)-6-chloro-[1,3,5]-triazine-based chitosan ether, the flocculant concentration is controlled at 11g / L, stand for one day, remove the upper liquid, and centrifuge the lower solid to accelerate the solid-liquid separation , The centrifugal speed is 4500rpm, the centrifugal time is 10min, and the solid floc is obtained.

[0046] Step a: Dry the solid flocs obtained in step d at 120°C for 45 hours, grind them into a 120 mesh powder, and vacuum dry at 75°C for 8 hours to obtain dry flocculated sludge;

[0047] Mix the dry floc...

Embodiment 3

[0056] Embodiment 3: The embodiment of the present invention discloses a method for preparing iron-doped carbon material using waste flocs, including the following steps:

[0057] Step d: The dye wastewater comes from a local printing and dyeing enterprise. Take 5L dye wastewater. The dye concentration is 800ppm during flocculation, and the pH of the solution is adjusted to 7. Add cationic flocculant BADT-CTS (2,4-bis(dimethylamine) to the dye wastewater -6-Chloro-[1,3,5]-triazine-based chitosan ether, the flocculant concentration is controlled at 15g / L, let stand for one day, remove the upper liquid, centrifuge the lower solid to accelerate the solid-liquid separation, centrifuge Rotate speed is 5000rpm, centrifugal time is 8min, get solid floc;

[0058] Step a: Dry the solid flocs obtained in step d at 140°C for 40 hours, grind into 140 mesh powder, and vacuum dry at 90°C for 11 hours to obtain dry flocculated sludge;

[0059] The dry flocculation sludge, sodium carboxymethyl cell...

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Abstract

The invention discloses a method for preparing iron doped carbon material by utilizing waste floc and a carbon material. The method comprises the steps of: a, settling and drying printing and dyeing waste floc to obtain dry floc sludge and mixing the dry floc sludge, sodium carboxymethylcellulose and potassium ferrate at a ratio; b, adding the mixture into a tubular furnace for vacuum treatment, and carrying out pyrolysis; c, grinding the black solid ball prepared by pyrolysis into powder; after adding deionized water and performing stirring, performing pumping filtering and repeated washing until the pH value of filtrate was 6-8; obtaining the iron-doped carbon material by vacuum drying. The invention has the beneficial effects that the floc sludge after the treatment of the industrial waste water containing dyes can be used as a pyrolysis precursor, mixed and dried with sodium carboxymethyl cellulose (CMC) and potassium ferrate, and then pyrolyzed to prepare an iron doped carbon material, and the waste can be changed into treasure, so that both environmental protection and economic income generation can be achieved.

Description

Technical field [0001] The invention relates to the technical field of printing and dyeing wastewater treatment, in particular to a method for preparing iron-doped carbon materials by using waste flocs and carbon materials. Background technique [0002] Printing and dyeing wastewater is wastewater discharged from printing and dyeing plants that process cotton, linen, chemical fiber and their blended products. The amount of wastewater from printing and dyeing is relatively large, with 100-200 tons of water consumed per ton of textiles during the printing and dyeing process, of which 80-90% becomes wastewater. Textile printing and dyeing wastewater has the characteristics of large water volume, high content of organic pollutants, large alkalinity, and large changes in water quality. It is one of the difficult-to-treat industrial wastewaters. The wastewater contains a lot of dyes, sizing agents, auxiliaries, oils, acids and alkalis. , Fiber impurities, sand substances, inorganic sa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/54
CPCH01M10/54Y02W30/84
Inventor 史玉琳谭周亮魏婷婷伍亮郭旭虹陈龙
Owner SHIHEZI UNIVERSITY