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Method for preparing nano biochar spheres from syrup wastewater

A technology of biochar and nano-carbon balls, applied in nano-carbon, chemical instruments and methods, multi-stage treatment of water/sewage, etc., can solve problems such as failure to meet wastewater discharge standards, consumption of large chemicals and energy, and eutrophication of water bodies. , to save materials, reduce preparation costs, and control the process.

Pending Publication Date: 2020-03-27
MINNAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the high organic load of this type of wastewater, the treatment process not only needs to consume a large amount of chemicals and energy, but also contains a large amount of COD, N, and P in the treated solution, which cannot meet the wastewater discharge standard, and is likely to cause eutrophication and secondary pollution of the water body. secondary pollution problem

Method used

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  • Method for preparing nano biochar spheres from syrup wastewater
  • Method for preparing nano biochar spheres from syrup wastewater
  • Method for preparing nano biochar spheres from syrup wastewater

Examples

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Effect test

Embodiment 1

[0024] A method for preparing nano biochar spheres from syrup wastewater, comprising the following steps:

[0025] S1: Put the syrup waste liquid, sodium lauryl sulfate and ultrapure water in a beaker, stir at 300r / min and 40°C for 30 minutes, and set aside for later use. The syrup waste liquid and dodecane in this example The quality of sodium base sulfate is respectively 10g and 0.05g, wherein the fructose content in the syrup waste liquid is 60wt%, and the consumption of ultrapure water is 10ml / g fructose;

[0026] S2: Transfer the solution treated in step S1 to a 100mL autoclave, react under high pressure at 180-240°C for 2-8h, take it out and cool to room temperature;

[0027] S3: Suction filter the product treated in step S2 with a 0.22um water-based filter membrane, wash the filtered product with distilled water and absolute ethanol three times, and vacuum-dry it at 80°C for more than 12 hours to prepare carbon nanospheres ;

[0028] S4: In order to further increase t...

Embodiment 2

[0048] A method for preparing nano biochar spheres from syrup wastewater, comprising the following steps:

[0049] S1: Put the syrup waste liquid, sodium lauryl sulfate and ultrapure water in a beaker, stir at 300r / min and 40°C for 30 minutes, and set aside for later use. The fructose, fructose, and The mass ratio of ultrapure water to sodium lauryl sulfate is (100-200): 200:1;

[0050] S2: Transfer the solution treated in step S1 to a 100mL autoclave, react under high pressure at 180-240°C for 2-8h, take it out and cool to room temperature;

[0051] S3: Suction filter the product treated in step S2 with a 0.22um water-based filter membrane, wash the filtered product with distilled water and absolute ethanol three times, and vacuum-dry it at 80°C for more than 12 hours to prepare carbon nanospheres ;

[0052] S4: In order to further increase the number of surface groups and the specific surface area of ​​carbon nanospheres, in this embodiment, the carbon nanospheres prepared...

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Abstract

The invention relates to the technical field of wastewater resource utilization, and discloses a method for preparing nano biochar spheres from syrup wastewater. A new way is provided for solving thetreatment problem and resource utilization of the syrup wastewater, the resource utilization of the syrup wastewater is realized, and the treatment cost of the syrup wastewater as sewage and the problem of environmental pollution are reduced. The method has the advantages of simple process, controllable process, no need of additional modification of new groups, and material saving and preparationcost reduction; meanwhile, the surfaces of the prepared nano biochar spheres have positive and negative potentials and have an amphoteric state, so that adsorption and removal of heavy metals, sulfonamide antibiotics and nitrosamine disinfection byproducts can be facilitated; the removal effect of the nano biochar spheres on anions and cations such as heavy metals, sulfonamide antibiotics and nitrosamine disinfection byproducts can be realized by regulating and controlling the pH value.

Description

technical field [0001] The invention relates to the technical field of waste water resource utilization, in particular to a method for preparing nano-biological charcoal balls from syrupy waste water. Background technique [0002] Syrup wastewater is wastewater produced by the food industry, especially the candied fruit processing industry. The CODcr content of this type of wastewater is as high as 100,000mg / L, and contains high concentrations of TN (>1000mg / L) and TP. Due to the high organic load of this type of wastewater, the treatment process not only needs to consume a large amount of chemicals and energy, but also contains a large amount of COD, N, and P in the treated solution, which cannot meet the wastewater discharge standard, and is likely to cause eutrophication and secondary pollution of the water body. pollution problem. Therefore, the treatment of the current syrup wastewater has become a difficult problem, but because the current generation of syrup waste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04B01J20/20B01J20/30C01B32/15
CPCB01J20/20C02F1/44C01B32/15
Inventor 黄泱潘钟李顺兴黄先玲温翠瑶胡小红
Owner MINNAN NORMAL UNIV
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