Ceramic flat membrane-separation film layer for sewage treatment and preparation process thereof

A preparation process and sewage treatment technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, semi-permeable membrane separation, etc., can solve the problems of reducing water flux, loss of filtration function of membrane materials, clogging, etc. To achieve the effect of simple process and improve sewage treatment efficiency

Active Publication Date: 2017-08-08
SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Membrane fouling in the sewage treatment process seriously affects the service life of the filter membrane. The main reason is that organic pollutants adhere to the surface of the membrane, which blocks the pore size of the membrane, reduces the water flux, and even completely loses the filtration function of the membrane material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Graphite powder and water, and add ammonia water to ball mill for 6 hours. The particle size of the graphite powder is 40-80 μm, the adding amount of graphite powder is 50% of the total mass, the adding amount of water is 10% of the total mass, and the adding amount of ammonia water is 5% of the total mass.

[0041] (2) Add binder, pore-forming agent, dispersant and water into the graphite slurry in (1), and stir evenly. The binding agent is liquid alkaline phenolic resin, and the addition amount of the binding agent accounts for 12% of the graphite mass. The pore-forming agent is calcium carbonate, and the pore-forming agent accounts for 5% of the graphite mass. Dispersant sodium polyacrylate (PA-Na), the addition amount of dispersant is 2% of graphite mass. The amount of water added is 30% of the graphite mass.

[0042] (3) The slurry obtained in (2) was sonicated for 1 hour.

[0043] (4) The slurry is sprayed onto the corundum flat film support by spraying, a...

Embodiment 2

[0046] (1) Graphite powder and water, and add ammonia water to ball mill for 6 hours. The particle size of the graphite powder is 50 μm, the addition of the graphite powder is 70% of the total mass, the addition of water is 30% of the total mass, and the addition of ammonia water is 15% of the total mass.

[0047] (2) Add binder, pore-forming agent, dispersant and water into the graphite slurry in (1), and stir evenly. Described binding agent is epoxy resin, and the addition amount of binding agent accounts for 30% of graphite mass. The pore forming agent is sodium carbonate. The pore forming agent accounts for 11% of the mass of graphite. The dispersant is sodium alginate (SA-Na). The addition amount of dispersant is 15% of graphite mass. The amount of water added in the step (2) is 50% of the graphite mass.

[0048] (3) The slurry obtained in (2) was sonicated for 3 hours.

[0049] (4) The slurry is sprayed onto the SiC flat film support by spraying, and then sintered ...

Embodiment 3

[0052] (1) Graphite powder and water, and add ammonia water to ball mill for 6 hours. The particle size of the graphite powder is 30 μm, the addition of the graphite powder is 60% of the total mass, the addition of water is 20% of the total mass, and the addition of ammonia water is 10% of the total mass.

[0053] (2) Add binder, pore-forming agent, dispersant and water into the graphite slurry in (1), and stir evenly. The binder is a liquid alkaline phenolic resin, and the amount of the binder accounts for 20% of the mass of the graphite. The pore forming agent is calcium carbonate. The pore forming agent accounts for 10% of the mass of graphite. The dispersant is sodium polyacrylate (PA-Na). The adding amount of dispersant is 5% of graphite mass. The amount of water added in the step (2) is 35% of the graphite mass.

[0054] (3) The slurry obtained in (2) was sonicated for 2 hours.

[0055] (4) The slurry is sprayed onto the support body of the corundum flat film by spra...

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Abstract

The invention discloses a ceramic flat membrane-separation film layer for sewage treatment and a preparation process thereof, and belongs to the field of inorganic membranes. The preparation process comprises the specific steps of adding graphite powder and water into ammonia water together, and carrying out ball milling, so as to obtain graphite slurry; adding a binding agent, a pore forming agent, a dispersing agent and water into the obtained graphite slurry, carrying out uniform mixing, and then, carrying out ultrasonic treatment; spraying the slurry, obtained through ultrasonic treatment, to a flat membrane supporting body, and then, carrying out high-temperature sintering, thereby obtaining a product. According to the preparation process disclosed by the invention, graphite is adopted as a main film layer raw material while high flux, low resistance and high filtration of a ceramic membrane material are guaranteed, so that the membrane material has a conductive characteristic; the process is simple, economical and efficient, and a material basis is provided for electric-field-utilized catalytic-oxidation or electric-field-strengthened sewage purification.

Description

technical field [0001] The invention belongs to the field of inorganic membranes, and in particular relates to a ceramic flat membrane separation membrane layer for sewage treatment and a preparation process thereof. Background technique [0002] Membrane Bioreactor (MBR) water treatment technology is a new water treatment technology that combines high-efficiency membrane separation technology and activated sludge method. Due to the filtration effect of the membrane, the microorganisms and sludge are completely trapped in the bioreactor, which realizes the complete separation of the hydraulic retention time and the sludge age, so that the biological unit has a high sludge concentration, which not only improves its organic matter. The removal rate, and the removal rate of ammonia nitrogen is also significantly increased. [0003] Judging from the recent MBR research at home and abroad, most of the filter membranes are microfiltration membranes with small pore sizes, or ultra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02B01D69/06B01D69/02B01D67/00C02F3/12
CPCB01D67/0039B01D69/02B01D69/06B01D71/02B01D2325/26C02F3/005C02F3/1268Y02W10/10
Inventor 王响赵世凯薛友祥唐玉栋张久美马腾飞李冰翠侯立红李小勇
Owner SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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