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A kind of preparation method of biofilm for sewage treatment

A sewage treatment and biofilm technology, applied in the adjustment method of biological treatment, water treatment parameter control, biological water/sewage treatment and other directions, can solve the problems of affecting sewage treatment efficiency, biofilm aging and demoulding, low film hanging rate, etc. , to achieve the effect of improving sewage treatment capacity, good sewage purification, and improving growth and reproduction ability

Active Publication Date: 2022-08-02
HAINAN TIANHONG MUNICIPAL DESIGN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the carrier also has a significant impact on the sewage treatment capacity of the biofilm. The common biofilm carriers mainly include biological rope, coral stone, biochemical cotton, etc., but the efficiency of using these common carriers to prepare biofilms is often not high, and the film hanging rate is not high. Moreover, the film formation is slow, and biofilm aging and demoulding are prone to occur during use, which further affects the benefits of sewage treatment

Method used

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  • A kind of preparation method of biofilm for sewage treatment
  • A kind of preparation method of biofilm for sewage treatment
  • A kind of preparation method of biofilm for sewage treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1-Selection of bacteria and algae liquid

[0032] This example provides the sewage purification effect of several groups of bacteria and algae liquids.

[0033] Treatment 1: Roseobacter bacterial solution

[0034] Treatment 2: Bacillus licheniformis (Baclicus lincheniformis) bacterial solution

[0035] Treatment 3: Bacillus cereus bacterial solution

[0036] Treatment 4: Microcystis aeruginosa algal liquid

[0037] Treatment 5: Scenedesmus carinatus algal fluid

[0038] Treatment 6: Roseobacter (Roseobacter) bacterial liquid + Bacillus licheniformis (Baclicus lincheniformis) bacterial liquid

[0039] Treatment 7: Bacillus cereus (Bacillus cereus) bacterial liquid + Bacillus licheniformis (Baclicus lincheniformis) bacterial liquid

[0040] Treatment 8: Roseobacter bacterial solution + Bacillus licheniformis bacterial solution + Scenedesmus carinatus algal solution

[0041] Treatment 9: Bacillus cereus (Bacillus cereus) bacterial liquid + Bacillus lichenifor...

Embodiment 2

[0048] Embodiment 2-Investigation of film hanging rate and desorption rate

[0049] The film hanging rate and desorption rate of Treatment 8 in Example 1 were tested, and it was found that the effect of the film hanging rate and the desorption rate was not ideal. After continuous experiments, the optimal biofilm culture scheme was found. Part of the test process and results are as follows:

[0050] Determination method of film hanging rate:

[0051] Dry the carrier, weigh it, and record the original weight of the carrier; the carrier is treated with film for 8h, 12h, 24h, and 48h, respectively, and the carrier after filming is taken out, dried, weighed, and the sum of the mass of the carrier and the biofilm is recorded.

[0052] The film hanging rate = (the sum of the mass of the carrier and the biofilm after hanging the film - the original weight of the carrier) / the original weight of the carrier

[0053] Desorption rate determination method:

[0054] Take the carrier afte...

Embodiment 3

[0063] Example 3 - Optimization of Biofilm Carriers

[0064] Preliminary tests show that the fiber fabric woven with bamboo charcoal fiber and seaweed fiber has better film hanging rate, the most efficient film hanging efficiency and the lowest film release rate. However, where the film removal rate reaches more than 30%, it is still necessary to further reduce the desorption of the biofilm from the carrier and improve the binding ability between microorganisms and microorganisms, and between microorganisms and carriers. It was found by accident that the carrier can further reduce the desorption rate after being treated in the following ways, and the demoulding rate after 24h, 48h and 72h of film hanging culture is not higher than 10%.

[0065] Carrier handling method:

[0066] The carrier is: a fiber fabric made of bamboo charcoal fiber as the weft and seaweed fiber as the warp through an air-jet loom. The warp density is 34-50 pieces / hour, the weft density is 38-42 pieces / ...

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Abstract

The invention discloses a preparation method of a biofilm for sewage treatment, and relates to the field of sewage treatment. The method of the present invention mainly comprises the following steps: (1) preparation of bacteria and algae liquid: preparing roseobacter bacteria liquid, Bacillus licheniformis bacteria liquid and Scenedesmus keelae liquid; (2) selection of carrier: using bamboo charcoal fiber and seaweed fiber (3) Biofilm cultivation: the carrier is evenly and horizontally suspended in the sewage to be treated, and the algal liquid and bacterial liquid of step (1) are added to carry out biofilm cultivation to obtain a biofilm. The present invention uses the combined system of Roseobacter, Bacillus licheniformis and Scenedesmus keel, to achieve harmonious symbiosis among the microorganisms in the biofilm after cultivation, improve the growth and reproduction capacity of the microorganisms, and further improve the sewage treatment capacity of the biofilm. Using the carrier made of bamboo charcoal fiber and seaweed fiber, the biofilm achieves the highest film hanging rate and the lowest film release rate, and the film hanging speed is the fastest, and the highest film hanging rate is basically reached within 24 hours.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a preparation method of a biofilm for sewage treatment. Background technique [0002] Biofilm refers to an ecosystem formed by microorganisms attached to and grown on the surface of a carrier based on electrostatic adsorption or the adhesion of microbial metabolic secretions. The main body in the treatment technology can effectively absorb and degrade the pollutants in the sewage, so as to achieve the purpose of sewage purification. The preparation of biofilms is usually produced under the interaction between fungi, algae or bacteria and algae. Different fungi and algae have different interaction relationships, so the prepared biofilms have a certain ability to treat pollutants in water. At present, technicians are still constantly searching for an efficient combination of bacteria and algae. In addition, the carrier also has a significant impact on the sew...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F3/34C02F3/10C02F101/20
CPCC02F3/325C02F3/34C02F3/103C02F3/006C02F2101/20C02F2209/08C02F2209/10Y02W10/10
Inventor 柏斌余明柏瑜
Owner HAINAN TIANHONG MUNICIPAL DESIGN CO LTD
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