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Filtering medium for removing vanadium in water and preparation method thereof

A filter medium and water removal technology, applied in chemical instruments and methods, water pollutants, other chemical processes, etc., can solve problems such as unsatisfactory results and achieve high removal rates

Active Publication Date: 2014-09-10
JIANGSU HAIYANG CHEM FIBERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the method in the prior art has an unsatisfactory effect on removing vanadium in drinking water, so it is necessary to provide a filter medium with a higher removal rate for vanadium in drinking water

Method used

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  • Filtering medium for removing vanadium in water and preparation method thereof

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preparation example Construction

[0022] The embodiment of the present invention discloses a method for preparing a filter medium for removing vanadium in water, which is characterized in that it comprises the following steps:

[0023] The mixture is molded in a molding machine, then sintered at 170-190°C for 120-130 minutes, cooled and demoulded to obtain a filter medium, and the mixture is composed of the following components: 200-400 parts by weight of ultra-high molecular weight polyethylene , 400 to 600 parts by weight of wood activated carbon adsorbed with phenol, 200 to 250 parts by weight of polyolefin nanocomposites and 100 to 300 parts by weight of modified clay; the polyolefin nanocomposites include the following components: semi-crystalline Nano-sized fillers of polyolefin resin and layered silicate; the weight average molecular weight of the ultra-high molecular weight polyethylene is 6 million to 7 million;

[0024] The modified clay is prepared according to the following method: mix the clay wit...

Embodiment 1

[0041] In a twin-screw extruder, a masterbatch was prepared with the following components: 88 wt% polypropylene matrix, 5 wt% nano-zeolite, 7 wt% maleic anhydride-g-polypropylene, with 0.7 wt% grafted on polypropylene on maleic anhydride. Extrusion conditions: extrusion temperature: 200°C, residence time in the extruder: 0.5min, shear mixing: 100 seconds -1 . After obtaining masterbatch, adopt following component to prepare polyolefin nanocomposite material in twin-screw extruder: 97 parts by weight of isoisomeric propylene homopolymer and 3 parts by weight of the masterbatch prepared above, extrusion conditions and above-mentioned same.

[0042] 100 grams of kaolin (produced by China Kaolin Industry Co., Ltd.) and 10% sodium bicarbonate were mixed homogeneously, and processed at 200°C for 20 hours to obtain a mixed material; in the mixed material, azodicarbonamide was added to adjust the pH The value is 7-8, then the temperature is raised to 180° C., and the temperature is...

Embodiment 2

[0045] In a twin-screw extruder, a masterbatch was prepared with the following components: 88 wt% polypropylene matrix, 5 wt% nano-zeolite, 7 wt% maleic anhydride-g-polypropylene, with 0.7 wt% grafted on polypropylene on maleic anhydride. Extrusion conditions: extrusion temperature: 200°C, residence time in the extruder: 0.5min, shear mixing: 100 seconds -1 . After obtaining the master batch, the following components are used to prepare polyolefin nanocomposites in a twin-screw extruder: 97 parts by weight of isoisomeric propylene homopolymer and 3 parts by weight of the master batch prepared above, and the basic conditions are the same as above .

[0046] 100 grams of kaolin (produced by China Kaolin Industry Co., Ltd.) and 10% sodium bicarbonate were mixed homogeneously, and processed at 200°C for 20 hours to obtain a mixed material; in the mixed material, azodicarbonamide was added to adjust the pH The value is 7-8, then the temperature is raised to 180° C., and the temp...

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Abstract

The invention provides a filtering medium for removing vanadium in water and a preparation method thereof. Adopted ultrahigh-molecular-weight polyethylene, wood activated carbon adsorbed with phenol, an olefin nanocomposite material and modified clay all have quite strong adsorption effect on vanadium, so that under the collaborative addition action of the raw materials, a filter core prepared by utilizing the filtering medium provided by the invention can effectively remove vanadium in to-be-treated water. Experimental results show that the filter core provided by the invention has higher removal rate on vanadium, and is suitable for needs of family terminal application water treatment.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a filter medium for removing vanadium in water and a preparation method thereof. Background technique [0002] The rapid development of industry and agriculture has led to serious damage to water resources. Industrial wastewater is discharged into rivers and lakes, pesticides, insecticides, etc. are used in large quantities, and domestic garbage and domestic wastewater are discharged indiscriminately. As a result, many harmful substances are produced in the water, and vanadium is one of them. Water pollution has increasingly become a serious problem affecting people's lives. [0003] Vanadium is a heavy metal. Ingestion of more than 10mg of vanadium per day or 10-20 micrograms of vanadium per gram of food can lead to poisoning, usually with slow growth, diarrhea, decreased intake and death. Moreover, because the allergy and toxicity of vanadium can cause acute epidemics...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/20
Inventor 梁晓
Owner JIANGSU HAIYANG CHEM FIBERS