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Heavy-metal adsorbent for wastewater treatment as well as preparation method and application thereof

A wastewater treatment and adsorbent technology, which is applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of low efficiency of heavy metal adsorption, achieve high reuse times and less raw materials , Overcome the effect of high cost

Inactive Publication Date: 2017-03-29
ZHENGZHOU LIFUAI BIOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the single Avalokitesvara soil has low adsorption efficiency of heavy metals. How to simply treat it to increase the efficiency of adsorption of heavy metals is a problem to be solved in this patent.

Method used

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  • Heavy-metal adsorbent for wastewater treatment as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] In the embodiment of the present invention, a heavy metal adsorbent for wastewater treatment is composed of the following raw materials in parts by weight: 31 parts of Guanyin soil, 1 part of thioglycolic acid, 8 parts of acrylamide, and 23 parts of polyethylene glycol.

[0018] Mix polyethylene glycol with 2.6 times its mass of deionized water to prepare a polyethylene glycol solution. Mix and grind Guanyin soil and acrylamide, pass through a 120-mesh sieve, then add polyethylene glycol solution, raise the temperature to 65°C and ultrasonically treat at this temperature for 27min, the ultrasonic power is 1000W, then add thioglycolic acid dropwise, dropwise After completion, heat up to 118°C and seal and stir at this temperature for 75 minutes, then microwave for 15 minutes with a microwave power of 1000W, then stir at 99°C until dry, and then calcinate in a muffle furnace at 430°C for 4.3h That is, the adsorbent.

[0019] Through repeated experiments, it is obtained t...

Embodiment 2

[0021] In the embodiment of the present invention, a heavy metal adsorbent for wastewater treatment is composed of the following raw materials in parts by weight: 39 parts of Guanyin soil, 5 parts of thioglycolic acid, 16 parts of acrylamide, and 31 parts of polyethylene glycol.

[0022] Mix polyethylene glycol with 2.6 times its mass of deionized water to prepare a polyethylene glycol solution. Mix and grind Guanyin soil and acrylamide, pass through a 120-mesh sieve, then add polyethylene glycol solution, raise the temperature to 65°C and ultrasonically treat at this temperature for 27min, the ultrasonic power is 1000W, then add thioglycolic acid dropwise, dropwise After completion, heat up to 118°C and seal and stir at this temperature for 75 minutes, then microwave for 15 minutes with a microwave power of 1000W, then stir until dry at a temperature of 101°C, and then calcinate in a muffle furnace at 430°C for 4.3 hours That is, the adsorbent.

[0023] Through repeated expe...

Embodiment 3

[0025] In the embodiment of the present invention, a heavy metal adsorbent for wastewater treatment is composed of the following raw materials in parts by weight: 33 parts of Guanyin clay, 2 parts of thioglycolic acid, 10 parts of acrylamide, and 25 parts of polyethylene glycol.

[0026] Mix polyethylene glycol with 2.6 times its mass of deionized water to prepare a polyethylene glycol solution. Mix and grind Guanyin soil and acrylamide, pass through a 120-mesh sieve, then add polyethylene glycol solution, raise the temperature to 65°C and ultrasonically treat at this temperature for 27min, the ultrasonic power is 1000W, then add thioglycolic acid dropwise, dropwise After completion, heat up to 118°C and seal and stir at this temperature for 75 minutes, then microwave for 15 minutes with a microwave power of 1000W, then stir at 100°C until dry, and then calcinate in a muffle furnace at 430°C for 4.3h That is, the adsorbent.

[0027] Through repeated experiments, it is obtaine...

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Abstract

The invention discloses a heavy-metal adsorbent for wastewater treatment as well as a preparation method and application thereof. The adsorbent is prepared from the following raw materials in parts by weight: 31 to 39 parts of kaolin, 1 to 5 parts of thioglycollic acid, 8 to 16 parts of acrylamide and 23 to 31 parts of polyethylene glycol. The heavy-metal adsorbent, which is provided by the invention and is obtained through steps of mixing the kaolin with the acrylamide, grinding an obtained first mixture, then adding the polyethylene glycol into the ground first mixture, carrying out ultrasonic treatment on an obtained second mixture, dropwise adding the thioglycollic acid into the second mixture subjected to the ultrasonic treatment, carrying out microwave treatment on an obtained third mixture, and the like, is extremely high in the adsorption efficiency to a heavy metal, moreover, can be repeatedly used for 100 times or above, and has a quite good governance effect on the heavy-metal pollution of a water source. The heavy-metal adsorbent for the wastewater treatment and the preparation method thereof are mild in reaction condition, few in raw materials, further wide in material obtaining, simple in process operation, low in production cost and high in yield, are economical and environment-friendly, and are suitable for industrialized production. The absorbent provided by the invention has a removal rate, which can reach 98 percent or above, to a heavy metal ion in high-concentration wastewater, and can be widely applied to the treatment of heavy-metal wastewater.

Description

technical field [0001] The invention relates to the technical field of environmental protection materials, in particular to a heavy metal adsorbent for wastewater treatment, a preparation method and application thereof. Background technique [0002] Water pollution caused by heavy metal ions is a serious environmental problem facing the world. Chromium, cadmium, and lead are the main heavy metal ions that cause water pollution. Among them, cadmium and lead usually have the highest content and are the most harmful to human health. According to the World Health Organization standard, the maximum content of cadmium and lead in drinking water should not be higher than 0.003 and 0.01mg / g. The current methods for removing heavy metal ions mainly include membrane separation, acid-base neutralization, sedimentation and other methods, but the high cost, long cycle and difficult control of the reaction limit its wide commercial application. [0003] Adsorption treatment of heavy meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30C02F1/28C02F101/20
CPCB01J20/12C02F1/281C02F2101/20
Inventor 不公告发明人
Owner ZHENGZHOU LIFUAI BIOLOGICAL TECH CO LTD
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