CN-118619493-B - Water treatment device based on magnetic particle catalysis and ceramic filter membrane filtration

CN118619493BCN 118619493 BCN118619493 BCN 118619493BCN-118619493-B

Abstract

The invention belongs to the technical field of water treatment devices, and particularly relates to a water treatment device based on magnetic particle catalysis and ceramic filter membrane filtration. The invention comprises a filtering tank body, wherein a SiC ceramic membrane which is penetrated up and down is arranged in the filtering tank body, a filtrate bin is enclosed between the inner wall of the filtering tank body and the outer wall of the SiC ceramic membrane, the top of the filtering tank body is connected with a liquid inlet pipe, the lower part of the filtrate bin is connected with a filtrate outlet pipe, the bottom of the filtering tank body is communicated with a back flushing tank body, the back flushing tank body is connected with a concentrated solution outlet pipe, the concentrated solution outlet pipe is connected with a precipitation device, the top of the filtering tank body is also connected with a concentrated solution inlet pipe, the precipitation device is connected with the concentrated solution inlet pipe, a magnetic catalytic material and an oxidant are added in the SiC ceramic membrane, and a plurality of magnetic field generating devices are arranged on the filtering tank body. The invention provides a water treatment device based on magnetic particle catalysis and ceramic filter membrane filtration, which improves the removal efficiency of complex pollutants.

Inventors

LI WEI
WANG XIANZHI
ZHANG XIAOLIANG
DAI XIAOQIANG
GAO CHANGLING
YANG QIAN

Assignees

中国五冶集团有限公司

Dates

Publication Date: 20260512
Application Date: 20240626

Claims (6)

1. A water body treatment device based on magnetic particle catalysis and ceramic filtration membrane filtration is characterized by comprising a filtration tank body (1), wherein an SiC ceramic membrane (2) penetrating up and down is arranged in the filtration tank body (1), a filtrate bin (11) is formed by surrounding between the inner wall of the filtration tank body (1) and the outer wall of the SiC ceramic membrane (2), a liquid inlet bin (12) is formed by surrounding between the upper part of the filtration tank body (1) and the top of the SiC ceramic membrane (2), a liquid inlet pipe (4) is connected to the top of the filtration tank body (1), a filtrate outlet pipe (5) is connected to the lower part of the filtrate bin (11), micro-polluted water enters the liquid inlet bin (12) from the liquid inlet pipe (4) and then enters the SiC ceramic membrane (2), the SiC ceramic membrane (2) filters the micro-polluted water, a backwash tank body (3) is communicated with the bottom of the filtration tank body (1), a concentrate outlet pipe (6) is connected to a sedimentation device, a concentrate inlet pipe (7) is connected to the top of the filtration tank body (1), a concentrate inlet pipe (7) is connected to the sedimentation device (7) and the rest of the concentrate is connected to the concentrate (3), then the mixture is sent to a precipitation device through a concentrated solution discharge pipe (6) for treatment and then is sent to a liquid inlet bin (12) again from a concentrated solution inlet pipe (7), a magnetic catalytic material and an oxidant are added in the SiC ceramic membrane (2), and a plurality of magnetic field generating devices (13) are arranged on the filtering tank body (1); The back flushing tank body (3) is divided into a back flushing bin (31) and a back flushing liquid storage bin (32) through a partition plate, the back flushing bin (31) is communicated with the SiC ceramic membrane (2), a concentrated solution discharge pipe (6) is connected to the back flushing bin (31), a back flushing liquid injection device (33) is arranged on the back flushing bin (31), a back flushing liquid suction pipe (34) is connected between the back flushing liquid storage bin (32) and the back flushing bin (31), a back flushing gas-liquid inlet pipe (35) is connected to the back flushing liquid storage bin (32), and a back flushing liquid outlet pipe (14) is connected to the liquid inlet pipe (4); the backwash liquid pipette (34) is connected with a high-concentration oxidant storage bin (36) for diffusing the oxidant into the SiC ceramic membrane (2); a magnetic catalytic material storage bin (37) is further arranged in the backwashing tank body (3), a magnetic catalytic material feeding device (38) for diffusing magnetic catalytic materials to the SiC ceramic membrane (2) is connected to the magnetic catalytic material storage bin (37), and an outlet of the magnetic catalytic material feeding device (38) extends into the backwashing bin (31); The bottom of the filtering tank body (1) is provided with a magnetic catalytic material recovery device (15).
2. The water treatment device based on magnetic particle catalysis and ceramic filtration membrane filtration of claim 1, wherein a SiC ceramic membrane positioning pile (21) is fixed in the middle of the filtration tank body (1), and the SiC ceramic membrane (2) is sleeved on the SiC ceramic membrane positioning pile (21).
3. The water treatment device based on magnetic particle catalysis and ceramic filtration membrane filtration according to claim 1, wherein the filtration tank (1) is further provided with a plurality of support members (16), and the plurality of support members (16) and the plurality of magnetic field generating devices (13) are alternately arranged to form the side wall of the filtration tank (1).
4. A water treatment device based on magnetic particle catalysis and ceramic filtration membrane filtration, according to claim 1, characterized in that the inside of the pores of the SiC ceramic membrane (2) is provided with an ultraviolet device (22).
5. A water treatment device based on magnetic particle catalysis and ceramic filtration membrane filtration is characterized in that a liquid inlet end sealing device (17) is arranged on the filtration tank body (1), and the liquid inlet end sealing device (17) separates a filtrate bin (11) from a liquid inlet bin (12).
6. The water treatment device based on magnetic particle catalysis and ceramic filtration membrane filtration according to any one of claims 1-5, wherein negative pressure devices are arranged in the filtrate bin (11) and in the filtrate discharge pipe (5).

Description

Water treatment device based on magnetic particle catalysis and ceramic filter membrane filtration Technical Field The invention belongs to the technical field of water treatment devices, and particularly relates to a water treatment device based on magnetic particle catalysis and ceramic filter membrane filtration. Background A slightly contaminated water body refers to a water body that has a lower concentration of contaminants, but may still have a negative impact on the environment and human health. The pollution conditions of the water bodies are complex, the sources are various, the components are various, and effective treatment means are needed to ensure the water quality safety. The micro-polluted water bodies exist widely and comprise natural water bodies such as rivers, lakes, groundwater and the like and urban water supply systems. Despite the low concentration of contaminants, there is a potential threat to the ecological environment and human health due to the cumulative effect and its potential toxicity. The pollution sources of the micro-polluted water body mainly comprise: 1) Industrial waste water contains heavy metals, organic pollutants and other harmful chemical substances. 2) Agricultural runoff, namely pesticides, fertilizers and pollutants in livestock manure. 3) Domestic sewage, personal care products, drug residues and chemicals used in daily life. 4) Rainwater runoff, namely carrying urban surface pollutants into a water body. The pollution components are as follows: The polluted components of the micro-polluted water body are various, and the common components comprise: 1) Organic contaminants such as Volatile Organic Compounds (VOCs) including benzene, toluene, chlorobenzene, and Polycyclic Aromatic Hydrocarbons (PAHs). 2) Inorganic contaminants such as heavy metals (lead, mercury, cadmium, etc.). 3) Pathogenic microorganisms such as bacteria and viruses. 4) Nutrient substances such as nitrogen, phosphorus and the like which cause eutrophication of the water body. Conventional removal means: 1) Physical methods including precipitation, filtration, adsorption, etc. 2) Chemical methods include oxidation-reduction, chemical precipitation, photocatalysis, etc. 3) Biological methods such as activated sludge process and biological filter. The defects and the improvement direction are as follows: 1) The treatment effect is limited, and the removal efficiency of complex pollutants is low. 2) The cost is high, especially the high-efficiency treatment technology is high. 3) Secondary pollution, which is possible in some treatment processes. Although the existing micro-polluted water treatment method achieves a certain effect in the aspect of pollution treatment, the problems of high cost, secondary pollution, low efficiency and the like still exist. Disclosure of Invention In order to solve the problems in the prior art, the invention aims to provide a water treatment device based on magnetic particle catalysis and ceramic filter membrane filtration, which improves the removal efficiency of complex pollutants. The technical scheme adopted by the invention is as follows: A water body treatment device based on magnetic particle catalysis and ceramic filtration membrane filtration comprises a filtration tank body, wherein an SiC ceramic membrane which penetrates up and down is arranged in the filtration tank body, a filtrate bin is enclosed between the inner wall of the filtration tank body and the outer wall of the SiC ceramic membrane, a liquid inlet bin is enclosed between the upper part of the filtration tank body and the top of the SiC ceramic membrane, a liquid inlet pipe is connected to the top of the filtration tank body, a filtrate discharge pipe is connected to the lower part of the filtrate bin, a backwash tank body is communicated with the bottom of the filtration tank body, a concentrated liquid discharge pipe is connected to the backwash tank body, a precipitation device is connected to the concentrated liquid discharge pipe, a concentrated liquid inlet pipe is also connected to the top of the filtration tank body, the precipitation device is connected with the concentrated liquid inlet pipe, a magnetic catalytic material and an oxidant are added in the SiC ceramic membrane, and a plurality of magnetic field generating devices are arranged on the filtration tank body. The micro-polluted water body enters the liquid inlet bin from the liquid inlet pipe and then enters the SiC ceramic membrane, and the SiC ceramic membrane filters the micro-polluted water body. The SiC ceramic membrane is added with a magnetic catalytic material and an oxidant, so that various organic pollutants can be effectively decomposed. The magnetic catalytic material can be kept in a suspended state in water by the aid of the magnetic field generating device, so that the contact area between the magnetic catalytic material and pollutants is increased, and the catalytic efficiency is improved. The residual