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Preparation method of biological membrane for sewage treatment

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

Active Publication Date: 2021-06-29
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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  • Preparation method of biological membrane for sewage treatment
  • Preparation method of biological membrane for sewage treatment
  • Preparation method of biological membrane for sewage treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The selection of embodiment 1-bacterium algae liquid

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

[0033] Treatment 1: Roseobacter bacterial liquid

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

[0035] Treatment 3: Bacillus cereus (Bacillus cereus) bacterial liquid

[0036] Treatment 4: Microcystis aeruginosa liquid

[0037] Treatment 5: Scenedesmus carinatus liquid

[0038] Treatment 6: Roseobacter bacterial fluid + Baclicus lincheniformis bacterial fluid

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

[0040] Treatment 8: Roseobacter bacterial fluid + Baclicus lincheniformis bacterial fluid + Scenedesmus carinatus algae fluid

[0041] Treatment 9: Bacillus cereus (Bacillus cereus) bacterial fluid + Bacillus lincheniformis (Baclicus lincheniformis) bacterial fluid +...

Embodiment 2

[0048] Embodiment 2-film formation rate, desorption rate investigation

[0049] Test the film formation rate and desorption rate of Example 1 Treatment 8, and find that the film formation rate and desorption rate effects are not very satisfactory, and find the optimal biofilm cultivation scheme through continuous testing. Part of the test process and results are as follows:

[0050] Determination method of hanging film rate:

[0051] The carrier was dried, weighed, and the original weight of the carrier was recorded; the carrier was subjected to film-coating treatment for 8h, 12h, 24h, and 48h respectively, and the carrier after film-coating was taken out, dried, weighed, and the sum of the mass of the carrier and the biofilm was recorded.

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

[0053] Desorption rate determination method:

[0054] Take the carrier after 8h, 12h,...

Embodiment 3

[0063] Example 3 - Optimization of Biofilm Carriers

[0064] Preliminary tests have shown that the fiber fabric woven with bamboo charcoal fiber and seaweed fiber has a better film-hanging rate, the most efficient film-hanging efficiency and the lowest release rate. However, when 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 between microorganisms and carriers. It was unexpectedly found through experiments that the carrier can further reduce the detachment rate after being treated in the following manner, and the detachment rate after 24h, 48h, and 72h of membrane-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-...

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Abstract

The invention discloses a preparation method of a biological membrane for sewage treatment, and relates to the field of sewage treatment. The method disclosed by the invention mainly comprises the following steps: (1) preparing bacterium-algae liquid: preparing rose bacilli liquid, bacillus licheniformis liquid and scenedesmus fossiliensis liquid; (2) selecting a carrier: preparing a fiber fabric from bamboo charcoal fibers and alginate fibers; and (3) culturing the biological membrane: uniformly and horizontally suspending the carrier in sewage to be treated, adding the algae liquid and the bacterial liquid in the step (1), and culturing the biological membrane to obtain the biological membrane. A combined system of rose bacter, bacillus licheniformis and scenedesmus fossiliensis is used, harmonious symbiosis of microorganisms in the biological membrane is achieved after culture, the growth and reproduction capacity of the microorganisms is improved, and the sewage treatment capacity of the biological membrane is further improved. The carrier made of the bamboo charcoal fibers and the alginate fibers is adopted, the biological membrane reaches the highest biological membrane culturing rate and the lowest film removing rate, the biofilm culturing speed is fastest, and the highest biological membrane culturing rate can be basically achieved in 24 h.

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 the ecosystem formed by microorganisms attached to and grown on the surface of the carrier according to 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 biofilm is usually produced under the interaction between bacteria, algae, or bacteria and algae. Different fungi and algae have different interaction relationships, so the prepared biofilm has different treatment capabilities for water pollutants. At present, technical personnel are still constantly searching for an efficient combination of bacteria and algae. In addition, the carrier also has a signif...

Claims

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Application Information

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Patent Type & Authority Applications(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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