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Drinking water arsenic-removal filter core and production method thereof

A drinking water and arsenic filter element technology, applied in chemical instruments and methods, other chemical processes, adsorption water/sewage treatment, etc. The effect of good performance, sufficient contact and excellent arsenic removal performance

Inactive Publication Date: 2017-07-04
苏州格绿新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a drinking water arsenic removal filter element and its preparation method. The composite arsenic removal filter element is prepared by material formula design and molding technology, and the nano-arsenic removal active material is fixed in the filter element while maintaining the water permeability and water flow of the filter element. Uniformity, to solve the problems of inconvenient use of nano arsenic removal particles, easy loss, increased cost and secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In the present embodiment, 2 kg of nano-zero-valent iron powder, 2.5 kg of activated carbon particles with a particle size of 60 meshes (the activated carbon particles are loaded with nano-arsenic adsorbent, and the nano-arsenic adsorbent is nano-zinc oxide, and its weight ratio is 2.5%) and 0.7 kg food-grade PE rubber powder into a high-speed mixer, high-speed mixing for 15 minutes and then set aside. Preheat the tubular extruder (the outer diameter of the extruded pipe is 63mm and the inner diameter is 38mm) in sections, and after the temperature of each section reaches 110°C, 130°C and 160°C in turn, use the screw feeder to feed the mixture powder at 40mm / min The line speed is fed into the tubular extruder, and it is hot-extruded in the working area with a temperature of 160°C. After the tubular porous material is formed, it is divided into sections with a length of 10 inches by a cutting machine, and its two ends are sealed with a silicone ring with a central hole t...

Embodiment 2

[0030] In this embodiment, 1kg hydrated cerium dioxide nanopowder, 1.8kg particle size 45 mesh food-grade diatomite, 0.05kg nano-zinc oxide, 0.1kg chitosan and 0.5kg food-grade PE rubber powder are packed into a high-speed mixer, Mix on high speed for 15 minutes and set aside. Heat the head of the electric heat press machine and the heat press mold (Ф63mm) to 135°C, then add 50g of mixed powder into the mold, preheat for 10min, and then heat press at a pressure of 15MPa for 5min. When the mold is taken out and naturally cooled to 70-80°C, the sheet-shaped porous filter plate in the mold is taken out and cooled to room temperature for later use. Laminate 9 pieces of porous filter plates into a detachable filter bottle with an inner diameter of 63 mm, pad the two ends with sponge pads and then package to obtain the drinking water arsenic removal filter element II.

Embodiment 3

[0032]In the present embodiment, the drinking water arsenic removal filter element 1 is installed in the PVC standard filter bottle applicable to the 10-inch filter element, and its water inlet is connected with the water outlet of the RO-50 self-priming pump, and the water inlet of the RO-50 self-priming pump is It is connected with the arsenic-containing raw water tank, and the internal diameter of the water pipes used is 4mm. After turning on the RO-50 self-priming pump, the arsenic-containing water flows through the arsenic removal filter element at a flow rate of 1.1L / min, which is not much different from the flow rate of 1.17L / min when the filter element is not installed, indicating that the arsenic removal filter element has good water permeability. After testing, the total arsenic concentrations in the water before and after treatment were 68ppb and 0.49ppb respectively. It can be seen that the application of the arsenic-removing filter element I of the present inventi...

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Abstract

The invention belongs to the technical fields of a novel material and a water purifier, and relates to a drinking water arsenic-removal filter core and a production method thereof. The arsenic-removal filter core is obtained by uniformly mixing arsenic adsorption powder, a porous particle arsenic adsorbent, an additive and a binder in proportion, and the materials are molded at proper temperature. A material formula design and a molding technology are used for preparing the arsenic-removal filter core, a nano arsenic-removal active substance is used for being fixed in the filter core, water permeability and current uniformity of the filter core are kept, so that the problems of inconvenient usage, increased cost due to easy loss of the nano arsenic-removal particle and secondary pollution can be solved. The arsenic-removal filter core has the advantages of loose and porous performance, good water permeability, and excellent intensity, the material and water are fully contacted, so that the product has excellent arsenic removal performance.

Description

technical field [0001] The invention belongs to the technical field of new materials and water purifiers, and relates to an arsenic-removing filter element for drinking water and a preparation method thereof. Background technique [0002] Arsenic is recognized as a carcinogen by many authoritative organizations such as the World Health Organization (WHO), the National Institute of Environmental Health Sciences (NIEHS) and the U.S. Environmental Protection Agency (US-EPA). Long-term contact with arsenic-contaminated water (including skin contact and drinking) can cause cardiovascular disease, nervous disorders, general fatigue, loss of appetite, nausea, and chronic poisoning symptoms such as skin lesions and keratinization, and may also cause skin cancer and liver cancer Cancer, lung cancer, kidney cancer, bladder cancer and other cancers also have a serious impact on children's intellectual development and physical development. When the human body ingests more than a certai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/02B01J20/06B01J20/08B01J20/12B01J20/14B01J20/16B01J20/20B01J20/24B01J20/26B01J20/28B01J20/30C02F1/28
CPCB01J20/0203B01J20/024B01J20/0251B01J20/06B01J20/08B01J20/12B01J20/14B01J20/16B01J20/165B01J20/20B01J20/24B01J20/26B01J20/28014B01J20/28033C02F1/28
Inventor 徐正超李琦方峰马聪杨炜沂钱红兵黄卫平
Owner 苏州格绿新材料科技有限公司
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