Carbon fiber filter and regeneration method therefor, and water treatment device

Patent metadata

Field	Value
Publication number	US-12486183-B2
Application number	US-202217887493-A
Country	US
Kind code	B2
Filing date	Aug 14, 2022
Priority date	Dec 31, 2021
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

A carbon fiber filter includes a center filter body and carbon fiber yarn wound around the center filter body. The center filter body is hollow and includes a water outlet. A surface of the center filter body is provided with at least one inverted triangular groove. A plurality of through holes are arranged in the groove. The through holes and the water outlet are in communication with a hollow inner cavity of the center filter body. The carbon fiber yarn is wound in the groove with a constant force to form a filter layer.

First claim

What is claimed is:

1 . A carbon fiber filter, comprising a center filter body and a carbon fiber yarn wound around the center filter body, wherein the center filter body is hollow and comprises a water outlet, a surface of the center filter body is provided with at least one groove, a plurality of through holes are arranged in the groove, the through holes and the water outlet are in communication with a hollow inner cavity of the center filter body, and the carbon fiber yarn is wound in the groove with a constant force to form a filter layer, wherein the groove is an inverted triangular groove with a lowermost angle of 10° to 160°.

2 . The carbon fiber filter of claim 1 , wherein the carbon fiber yarn is wound in the groove with a constant force of 10 N to 200 N.

3 . The carbon fiber filter of claim 1 , wherein the carbon fiber yarn is a modified carbon fiber yarn obtained through acid leaching.

4 . The carbon fiber filter of claim 1 , wherein the carbon fiber yarn is modified carbon fiber yarn obtained through ablation at a high temperature of 200° C. to 700° C.

5 . The carbon fiber filter of claim 1 , wherein the center filter body and the carbon fiber yarn wound around the center filter body are used as a cathode connected to a negative electrode of a power supply, to form an electroflocculation-fiber filtration water treatment device with an iron anode connected to a positive electrode of the power supply.

6 . A regeneration method for the carbon fiber filter of claim 1 , comprising: placing the carbon fiber yarn as a cathode in an electrolyte for backwashing without the constant force, performing water electrolysis after the carbon fiber yarn communicates with an anode, to generate a large quantity of microbubbles at the cathode, and washing a surface of the carbon fiber yarn for regeneration by using backwash water and the microbubbles.

7 . The method of claim 6 , comprising: placing the carbon fiber yarn as the cathode in the electrolyte after removing the constant force on the carbon fiber yarn.

8 . The method of claim 6 , wherein a voltage of 1.2 to 8 V is applied between the cathode and the anode in the water electrolysis.

9 . An electroflocculation-fiber filtration water treatment device, comprising an anode and a cathode, wherein the anode is electrically connected to a positive electrode of a power supply, the cathode is electrically connected to a negative electrode of the power supply, and the cathode is a cathode of the carbon fiber filter of claim 1 .

10 . The device of claim 9 , wherein the anode is an electroflocculation anode plate located upstream of a water flow direction and comprises one or more of iron, aluminum, an aluminum-containing composite material, and an iron-containing composite material.

Assignees

• Univ Wuhan

Inventors

• Wang Xu
• Wang Mingliang
• Wang Hui
• Xu Tao
• Xie Yimin
• Mao Xuhui
• Hu jiangjun
• Li Yi
• Huang Yu
• Fan Yuanrou

Classifications

• C02F2303/16

  Regeneration of sorbents, filters · CPC title

• C02F2001/46152

  characterised by the shape or form · CPC title

• C02F2001/46133

  characterised by the material · CPC title

• C02F2001/46119

  Cleaning the electrodes · CPC title

• C02F1/463 Primary

  by electrocoagulation · CPC title