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Active coke adsorbent for wastewater purification and preparation method thereof

A technology for wastewater purification and activated coke, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of lack of drinking water purification adsorption catalyst, restricting the development of drinking water purification system, poor adsorption effect, etc. , to achieve the effect of reducing loss and labor cost, low cost and high utilization rate

Inactive Publication Date: 2012-02-22
赵英杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the technology of using activated carbon to purify drinking water and wastewater has just started in China, the activated carbon adsorbents currently used in the market are basically activated carbon produced from coking coal, which has high production costs and poor adsorption effects. The lack of purification and adsorption catalysts for drinking water severely restricts Development of Drinking Water Purification System

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Crush lignite and coking coal to 180 mesh, after deashing, take 49% lignite, 20% coking coal, 8% bitumen, 11% tar, 8% water, 1% ferric nitrate, 0.5% potassium carbonate , 0.5% sodium carbonate, 1% zinc nitrate, and 1% copper nitrate are fully mixed and stirred until the coal paste is formed, and the coal paste is continuously granulated under high pressure in the granulation equipment to make the particles meet GB7702.3 - Strength specified in 1997. Then the formed granules are dried in a fluidized bed, and the moisture inside the material is evaporated to reduce the moisture inside the material to 5%. The dried material is added to the carbonization furnace, isolated from the air, and heated to 700°C at 10°C / min. ℃, after keeping for 6 hours, the activation workshop section starts to carry out, rises to 800 ℃ with the same heating rate, feeds nitrogen, 20% water vapor, 2% oxygen simultaneously and keeps for 5 hours, cools down, obtains the present invention product. ...

Embodiment 2

[0034] Crush lignite and coking coal to 170 mesh, after deashing, take 45% lignite, 24% coking coal, 6% bitumen, 10% tar, 10% water, 1% ferric nitrate, 1% potassium carbonate , 1% sodium carbonate, 1% zinc nitrate, and 1% copper nitrate are mixed and stirred evenly until coal paste is formed. The coal paste is continuously granulated under high pressure in the granulation equipment, so that the particles meet the requirements of GB7702.3- The strength of the 1997 regulation. Then the formed particles are dried in a fluidized bed, and the moisture inside the material is evaporated to reduce the moisture inside the material to 5%. The dried material is added to the carbonization furnace, isolated from the air, and heated to 650°C at 7.5°C / min. ℃, after keeping for 6 hours, the activation section starts to go on, rise to 750 ℃ ​​with the same heating rate, feed nitrogen, 25% water vapor, 3% oxygen at the same time and keep for 5 hours, cool to obtain the product of the present in...

Embodiment 3

[0036] Crush weak caking coal and coking coal to 180 mesh, after deashing, take 50% lignite and 20% coking coal with 9% bitumen, 10% tar, 8% water, 1% ferric nitrate, 0.5% Potassium carbonate, 0.5% sodium carbonate, 0.5% zinc nitrate, and 0.5% copper nitrate are fully mixed and stirred until coal paste is formed, and the coal paste is continuously granulated under high pressure in the granulation equipment to make the particles meet GB7702 .3-1997 specified strength. Then the formed granules are dried in a fluidized bed, and the moisture inside the material is evaporated to reduce the moisture inside the material to 5%. The dried material is added to the carbonization furnace, isolated from the air, and heated to 700°C at 14°C / min. ℃, after keeping for 6 hours, the activation workshop starts to carry out, rises to 800 ℃ with the same heating rate, feeds nitrogen, 20% water vapor, 1.5% oxygen simultaneously and keeps for 5 hours, cools, obtains the present invention product. ...

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Abstract

The invention provides an activated coke adsorbent for wastewater purification and a preparation method thereof. The activated coke adsorbent for wastewater purification is made of lignite and coke pulverized into a certain fineness, tar, asphalt, solid metal salt and water after deashing, It is obtained by kneading, forming, drying, carbonization and activation. The activated coke adsorbent for purifying wastewater prepared by using the above raw materials and method not only has good purifying effect, but also has low cost, simple preparation and strong practicability.

Description

technical field [0001] The invention belongs to the technical field of wastewater purification, and in particular relates to an activated coke adsorbent for wastewater purification and a preparation method of the activated coke adsorbent for wastewater purification. Background technique [0002] At present, the per capita water resources are scarce, and the rapid economic development has resulted in a large amount of sewage. However, how to effectively purify sewage and recycle limited water resources is an urgent problem to be solved. With the improvement of people's living standards, the requirements for water quality are becoming more and more stringent. At present, 700 million people in China drink water that does not meet drinking water standards, and 24% of them drink water of poor quality, seriously endangering people's health and survival. Because activated carbon has a developed pore structure and a huge specific surface area, it has a strong adsorption capacity fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28B01J20/20B01J20/30
Inventor 赵建勋隋志文程洪义张伟
Owner 赵英杰
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