Sewage treatment microbial carrier and preparation method thereof

A microbial carrier and sewage treatment technology, applied in biochemical equipment and methods, biological water/sewage treatment, light water/sewage treatment, etc., can solve the problems of low sewage treatment efficiency, easy water deterioration, and easy shedding

Active Publication Date: 2020-07-07
山东高速环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of small surface area, low porosity, small affinity between the carrier and microorganisms, easy shedding, low sewage treatment efficiency, and easy deterioration of treated water, etc., existing microbial carriers

Method used

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  • Sewage treatment microbial carrier and preparation method thereof
  • Sewage treatment microbial carrier and preparation method thereof
  • Sewage treatment microbial carrier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for preparing a microbial carrier for sewage treatment, comprising the following steps:

[0033] Step 1: Add graphene into ethanol, ultrasonically disperse at 30-45°C for 2 hours to obtain graphene solution, then dissolve polyacrylonitrile and ferric citrate in ethanol, mix with graphene solution to prepare spinning solution, and The spinning solution was injected into two identical syringes respectively, and the composite fiber bundle with an average diameter of 5 μm was prepared by the double-needle conjugate method, and then woven to obtain a composite fiber scaffold with a pore diameter of 50 μm. After drying, the JW-RB pore The porosity measured by the porosity measuring instrument is 92%;

[0034] Step 2: Pre-oxidize the composite fiber scaffold obtained in step 1 in an air atmosphere, keep the temperature at 200°C for 4 hours, then place it in an inert gas, program the temperature to 600°C and keep it for 1 hour to complete the carbonization, and stop th...

Embodiment 2

[0037] A method for preparing a microbial carrier for sewage treatment, comprising the following steps:

[0038] Step 1: Add graphene into ethanol, ultrasonically disperse at 30-45°C for 4 hours to obtain a graphene solution, then dissolve polyacrylonitrile and ferric oxalate in ethanol, mix with graphene solution to prepare spinning solution, and spin The silk liquid was injected into two identical syringes respectively, and composite fiber bundles with an average diameter of 8 μm were prepared by double-needle conjugate method, and then weaved to obtain a composite fiber scaffold with a pore diameter of 100 μm. The measuring instrument measures its porosity, which is 94%;

[0039] Step 2: Pre-oxidize the composite fiber scaffold obtained in step 1 in an air atmosphere, keep the temperature at 230°C for 4 hours, then place it in an inert gas, program the temperature to 700°C and keep it for 0.6 hours to complete the carbonization, and stop after the program cools down to 180°...

Embodiment 3

[0042] A method for preparing a microbial carrier for sewage treatment, comprising the following steps:

[0043] Step 1: Add graphene into ethanol, ultrasonically disperse at 30-45°C for 6 hours to obtain graphene solution, then dissolve polyacrylonitrile and ferric citrate in ethanol, mix with graphene solution to prepare spinning solution, and The spinning solution was injected into two identical syringes respectively, and the composite fiber bundle with an average diameter of 10 μm was prepared by double-needle conjugation method, and then woven to obtain a composite fiber scaffold with a pore diameter of 150 μm. After drying, the JW-RB pore The porosity measured by the porosity measuring instrument is 97%;

[0044] Step 2: Pre-oxidize the composite fiber scaffold obtained in step 1 in an air atmosphere, keep the temperature at 200-250°C for 4 hours, then place it in an inert gas, program the temperature to 800°C and keep it for 0.5h to complete the carbonization, and progr...

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Abstract

The invention discloses a sewage treatment microbial carrier, which consists of a magnetic carbon fiber bracket and a polypyrrole film layer, wherein microorganisms are fixed on the surface of the polypyrrole film layer; wherein the magnetic carbon fiber bracket is formed by weaving composite fiber bundles, and is obtained through pre-oxidation and carbonization treatment; the composite fiber is apolyacrylonitrile fiber doped with graphene, and magnetic iron oxide nanoparticles are uniformly distributed on the surface and inside the composite fiber. The iron oxide nanoparticles generated in situ have good photocatalytic activity, and can promote local graphitization of the carbon fibers and cooperate with graphene to improve the conductivity of the carbon fibers; the magnetic carbon fiberbracket is used as a working electrode; a polypyrrole film is electrochemically deposited on an iron oxide photocatalyst, so that microorganisms are effectively fixed and cannot be embedded, microorganism loading and proliferation are facilitated, the iron oxide photocatalyst and the microorganisms can be in full contact with pollutants in sewage, photocatalytic degradation and microorganism treatment are synchronously carried out, and the sewage treatment efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a microbial carrier for sewage treatment and a preparation method thereof. Background technique [0002] With the increasing shortage of water resources, the requirements for sewage treatment are also increasing. Due to its low cost and low pollution, microbial treatment occupies an important position in the sewage treatment process. In the microbial treatment process, it is usually necessary to attach the microorganisms to the carrier, and then place the carrier in the sewage to be treated to realize the long-term utilization of the microorganisms. The structure and material of the microbial carrier directly affect the adhesion of the biological carrier to the microorganism. [0003] The Chinese patent document with the application number 201510985470.2 discloses a sewage treatment composite gel material for embedding microorganisms and its preparation method, which i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/10C02F3/34C02F1/30C12N11/14C12N11/098C12N11/089C12N11/082C02F103/34
CPCC02F3/105Y02W10/10
Inventor 张立
Owner 山东高速环保科技有限公司
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