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Rapid and high-efficiency adsorbing material for water treatment industry as well as preparation method and application thereof

An adsorption material and water treatment technology, applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc., can solve the performance degradation of sedimentation tanks in water plants, increase emergency disposal costs, and turbidity of factory water. Exceeding the standard and other problems, to achieve the effect of being suitable for wide application, cheap water purification effect, and reducing adsorption cost

Pending Publication Date: 2019-03-22
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the one hand, adding a large amount of powdered activated carbon will cause waste of materials and increase the cost of emergency treatment; on the other hand, adding a large amount of powdered activated carbon will exceed the design load of sedimentation and filtration of the water plant, resulting in a decline in the performance of the sedimentation tank of the water plant, clogging of the filter and delivery Water turbidity exceeds standard
Therefore, there is an urgent need to invent a fast and efficient adsorption material with fast adsorption speed and large adsorption capacity, so as to solve the problem of short adsorption contact time when the water plant near the water intake responds to sudden organic pollution of the water source, and reduce the use of the adsorbent in the emergency treatment process. Dosage, reduce cost

Method used

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  • Rapid and high-efficiency adsorbing material for water treatment industry as well as preparation method and application thereof
  • Rapid and high-efficiency adsorbing material for water treatment industry as well as preparation method and application thereof
  • Rapid and high-efficiency adsorbing material for water treatment industry as well as preparation method and application thereof

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preparation example Construction

[0026] Preparation of Ultrafine Powdered Activated Carbon

[0027] The ultrafine powdered activated carbon of the present invention takes traditional coal-based powdered activated carbon as a raw material, and after deep grinding by a ball mill, utilizes a laser particle size analyzer (Beckman LS13320, the U.S.) to measure and analyze the ultrafine activated carbon particle size range prepared by analysis, and measure ultrafine The median particle size of activated carbon was 1.6 μm, and its surface morphology was measured by a Phenom desktop scanning electron microscope (PhenomProX, Netherlands). figure 2 shown. Compared with the surface morphology of traditional 325 mesh powdered activated carbon figure 1 In contrast, it can be seen that the particle size of ultrafine powder activated carbon is significantly reduced, and the particle size distribution is more uniform and the agglomeration is stronger.

[0028] Using traditional 325-mesh powdered activated carbon, three ki...

Embodiment 1

[0034] Ultrafine powder activated carbon can significantly increase the adsorption rate of activated carbon on ranitidine, the initial concentration of ranitidine is 0.5mg / L, and the dosage of No. 2 ultrafine powder activated carbon and ordinary activated carbon is 5mg / L:

[0035] ①5min reaction time, the adsorption capacity of 325 mesh ordinary powdered activated carbon is 27μg / mg, and the adsorption capacity of No. 2 ultrafine powdered activated carbon is 78μg / mg, ultrafine powdered activated carbon can make full use of the adsorption performance of activated carbon in a very short contact time;

[0036] ②30min reaction time, the adsorption capacity of 325 mesh ordinary activated carbon is 45μg / mg, and the adsorption capacity of No. 2 ultrafine activated carbon is 92μg / mg. Ultrafine powder activated carbon can make full use of the adsorption performance of activated carbon in a short contact time.

Embodiment 2

[0038] Ultrafine activated carbon can significantly increase the adsorption rate of activated carbon to nizatidine. The initial concentration of nizatidine is 1.0mg / L, and the dosage of No. 2 ultrafine powder activated carbon and ordinary activated carbon is 5mg / L:

[0039] ①5min reaction time, the adsorption capacity of 325 mesh ordinary activated carbon is 35μg / mg, and the adsorption capacity of No. 2 ultrafine activated carbon is 125μg / mg, which can make full use of the adsorption performance of activated carbon in a very short contact time;

[0040] ②30min reaction time, the adsorption capacity of 325 mesh ordinary activated carbon is 62μg / mg, and the adsorption capacity of No. 2 ultrafine activated carbon is 150μg / mg, which can make full use of the adsorption performance of activated carbon in a short contact time.

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Abstract

The invention discloses a rapid and high-efficiency adsorbing material for water treatment industry as well as a preparation method and application thereof, and belongs to the field of water treatmentmaterials. The rapid and high-efficiency adsorbing material used in the water treatment industry for removing organic pollutants is made of superfine powder activated carbon, the grain size is between 0.5 [mu]m and 10 [mu]m, the specific surface area is more than 1000 m<2> / g, and the material has internal micropores. The adsorbing material is prepared by grinding powder activated carbon. Comparedwith the common powder activated carbon, the adsorbing material provided by the invention is small in grain size, more uniform in grain size distribution, high in adsorbing speed and high in adsorbing capacity.

Description

technical field [0001] The invention belongs to the field of water treatment materials, and in particular relates to a fast and efficient adsorption material used in the water treatment industry, a preparation method and an application thereof. Background technique [0002] Affected by various factors such as safety production accidents, transportation accidents, illegal sewage discharge, and natural disasters, my country's sudden environmental pollution incidents are still in a period of high incidence, and some emergencies will pollute drinking water sources, seriously threatening the safety of water supply. As a porous and non-polar adsorbent, activated carbon has good adsorption capacity for non-polar organic matter and weakly polar organic matter, and is often used for emergency treatment of sudden organic pollution in water sources. [0003] The activated carbon commonly used in the emergency treatment process is mainly powdered activated carbon. The product specifica...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F1/52C02F101/30
CPCB01J20/20C02F1/283C02F1/5245B01J20/28066B01J20/28085B01J20/3021C02F2101/30
Inventor 陈超王莹林朋飞尹志航张晓健汪隽
Owner TSINGHUA UNIV
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