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Method for treating solid waste obtained after adsorption of starch wastewater with activated carbon

A technology of activated carbon adsorption and treatment methods, applied in separation methods, chemical instruments and methods, filter regeneration, etc., can solve the problems of wastewater generation and long regeneration time, and achieve the effect of increasing the rate of enzymatic hydrolysis

Active Publication Date: 2021-05-28
WUXI ZHONGTIAN SOLID WASTE DISPOSAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the regeneration time of this method is too long, and adding lye and other solutions for alkaline washing will generate waste water

Method used

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  • Method for treating solid waste obtained after adsorption of starch wastewater with activated carbon
  • Method for treating solid waste obtained after adsorption of starch wastewater with activated carbon
  • Method for treating solid waste obtained after adsorption of starch wastewater with activated carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The waste activated carbon obtained from a pharmaceutical company has a black block appearance, high moisture content, and white deposits on the surface.

[0030] Pre-experiment 1: After mechanically pulverizing 100g of large-grained activated carbon, place it in a muffle furnace for calcination at a high temperature of 800°C for 8 hours. Due to the low ignition point of the adsorbed starch-like organic matter, which is 300°C, the activated carbon spontaneously ignites in the furnace. All remaining active carbon 1g was burnt to ash.

[0031] Pre-experiment 2: After crushing 100g of large-grained activated carbon clusters, dissolve them in water with twice the mass, stir them evenly with a magnetic stirrer, and obtain activated carbon and dissolved water after filtration. The activated carbon was oven-dried at 120°C for 24 hours, and it was found that the weight of the activated carbon was reduced by 50% (from 100g to 50g). After calcination at 800°C in the muffle furnac...

Embodiment 2

[0039] The waste activated carbon obtained from a pharmaceutical company has a black block appearance, high moisture content, and white deposits on the surface.

[0040] Pre-experiment 1: directly crush 100g of large-grained activated carbon mechanically, and place it in a muffle furnace for calcination at a high temperature of 800°C for 8 hours. Due to the low ignition point of the adsorbed starch organic matter, which is 300°C, the activated carbon spontaneously ignites in the furnace, and the remaining 1 g of activated carbon was completely burned to ash.

[0041] Pre-experiment 2: Break 100g of the large-grained activated carbon cluster into water with twice the mass, stir it evenly with a magnetic stirrer, and filter to obtain activated carbon and dissolved water. Activated carbon was oven-dried at 120°C for 24 hours, and it was found that the weight loss of activated carbon was 54% (from 100g to 46g). After calcination at 800°C in the muffle furnace for 8 hours, the resi...

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Abstract

The invention discloses a method for treating solid waste obtained after adsorption of starch wastewater with activated carbon, belonging to the technical field of activated carbon resource regeneration in the pharmaceutical industry. According to the invention, the activated carbon having adsorbed the starch wastewater is subjected to water dissolution, enzymolysis and suction filtration to obtain a glucose purification solution which can be used as a nutrient solution of a sewage treatment tank and a solid mixture which is incinerated by using a dry method to realize regeneration of the activated carbon. The treatment method provided by the invention can solve the problem of spontaneous combustion of the activated carbon having adsorbed starch organic matters in an incinerator, and is simple to operate, small in reagent adding amount, low in treatment cost and free of three wastes.

Description

technical field [0001] The invention relates to a method for treating solid waste after activated carbon absorbs starchy wastewater, and belongs to the technical field of activated carbon resource regeneration in the pharmaceutical industry. Background technique [0002] With the rapid development of the pharmaceutical industry, more and more waste activated carbon is produced by a large number of pharmaceutical companies in my country, and the market is also growing. In the market, a large part of the activated carbon regeneration of pharmaceutical factories is in a blank stage, and the waste activated carbon of most pharmaceutical enterprises can only be temporarily stored in enterprises. Among them, a small part of waste activated carbon can only be treated simply. Not only the treatment process is backward, the equipment is simple, the treatment scale is small, but also the awareness of pollution prevention is lacking. [0003] In terms of activated carbon regeneration,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/34B01J20/20
CPCB01J20/3416B01J20/3475B01J20/3483
Inventor 汤甜虞恺周淇
Owner WUXI ZHONGTIAN SOLID WASTE DISPOSAL CO LTD
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