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Suspended filler ball for treating sewage by biofilm method and preparation method thereof

A technology of suspended filler and biofilm method, which is applied in biological water/sewage treatment, granular microbial carrier treatment, chemical instruments and methods, etc. It can solve the problem that nanoparticles are easy to agglomerate or fall off, the specific surface area of ​​loofah is reduced, and the purification effect is difficult. Guarantee and other issues, to achieve the effect of improving specific surface area and roughness, preventing specific surface area reduction, and preventing falling off

Inactive Publication Date: 2020-08-04
成都其其小数科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Using nanoparticles to adsorb on the surface of the loofah fiber can increase the specific surface area of ​​the loofah. However, when the nanoparticles are loaded on the surface of the carrier through deposition and adsorption, the loading firmness is poor, and the nanoparticles are easy to agglomerate or fall off, resulting in long-term use. The specific surface area of ​​the loofah is reduced, and the purification effect is difficult to guarantee

Method used

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  • Suspended filler ball for treating sewage by biofilm method and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0028] (1) Disperse calcium silicate nanoparticles and calcium stearate in deionized water to obtain dispersion A; the mass ratio of calcium silicate nanoparticles, calcium stearate and deionized water is 6:0.2:100;

[0029] (2) Add sodium alginate and monoglyceride into deionized water, stir and dissolve at 70°C to obtain solution B; the mass ratio of sodium alginate, monoglyceride and deionized water is 0.5:0.02:100;

[0030] (3) Cut the loofah into small pieces of 2cm, clean it, and dry it under vacuum at 80°C for 2 hours, then immerse the loofah in the dispersion A, stir at 1200rpm for 30min, stop stirring, and then use a frequency of 25kHz and a power density of 0.5 W / cm 2 Ultrasonic treatment 2h, filter, obtain the loofah of depositing and adsorbing calcium silicate nanoparticles;

[0031] (4) Immerse the loofah on which calcium silicate nanoparticles are deposited and adsorbed in solution B, using a frequency of 25kHz and a power density of 0.5W / cm 2 Ultrasonic treatm...

Embodiment 2

[0034] (1) Disperse calcium silicate nanoparticles and calcium stearate in deionized water to obtain dispersion A; the mass ratio of calcium silicate nanoparticles, calcium stearate and deionized water is 5:0.4:100;

[0035] (2) Add sodium alginate and monoglyceride into deionized water, stir and dissolve at 70°C to obtain solution B; the mass ratio of sodium alginate, monoglyceride and deionized water is 0.4:0.03:100;

[0036] (3) Cut the loofah into small pieces of 2cm, clean it, and dry it under vacuum at 80°C for 2 hours, then immerse the loofah in the dispersion A, stir at 1200rpm for 30min, stop stirring, and then use a frequency of 25kHz and a power density of 0.5 W / cm 2 Ultrasonic treatment 2h, filter, obtain the loofah of depositing and adsorbing calcium silicate nanoparticles;

[0037] (4) Immerse the loofah on which calcium silicate nanoparticles are deposited and adsorbed in solution B, using a frequency of 25kHz and a power density of 0.5W / cm 2Ultrasonic treatme...

Embodiment 3

[0040] (1) Disperse calcium silicate nanoparticles and calcium stearate in deionized water to obtain dispersion A; the mass ratio of calcium silicate nanoparticles, calcium stearate and deionized water is 6:0.2:100;

[0041] (2) Add sodium alginate and monoglyceride into deionized water, stir and dissolve at 70°C to obtain solution B; the mass ratio of sodium alginate, monoglyceride and deionized water is 0.3:0.04:100;

[0042] (3) Cut the loofah into small pieces of 2cm, clean it, and dry it under vacuum at 80°C for 2 hours, then immerse the loofah in the dispersion A, stir at 1100rpm for 50min, stop stirring, and then use a frequency of 25kHz and a power density of 0.5 W / cm 2 Ultrasonic treatment 3h, filtration, obtains the loofah of depositing and adsorbing calcium silicate nanoparticles;

[0043] (4) Immerse the loofah on which calcium silicate nanoparticles are deposited and adsorbed in solution B, using a frequency of 25kHz and a power density of 0.5W / cm 2 Ultrasonic t...

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Abstract

The invention relates to the field of sewage treatment, and provides a suspended filler ball for treating sewage by a biofilm method and a preparation method thereof. The method comprises the following steps: cutting loofah sponge into small sections, firstly immersing the loofah sponge into a nano calcium silicate dispersion solution for deposition and adsorption, then immersing the loofah spongeinto a sodium alginate solution for cross-linking film formation, and finally loading the loofah sponge into hollow filler balls, thereby preparing the suspended filler balls for biofilm process sewage treatment. Compared with a traditional method, the surfaces of the loofah sponge fiber yarns are loaded with the calcium silicate nanoparticles, so that the specific surface area of the loofah sponge is increased, the sodium alginate and Ca<2+> of the nanoparticles are crosslinked to form a film, and the calcium silicate nanoparticles can be effectively prevented from being agglomerated or falling off. When the filler ball prepared by the invention is used for sewage treatment, a good sewage purification effect can be kept after long-time use.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and provides a suspended filler ball for sewage treatment by a biofilm method and a preparation method thereof. Background technique [0002] The biofilm method is an important biological treatment method for sewage treatment using the biofilm attached to the carrier, and has attracted much attention in the field of sewage treatment. The biofilm adheres to and grows on the surface of the carrier, absorbs the organic matter dissolved in the water, and the microorganisms in the film decompose and metabolize the organic matter, so as to achieve the purpose of sewage treatment. Biofilm method is widely used in domestic sewage, food processing, papermaking, pharmaceutical and other wastewater treatment. The carrier is the basis of microbial attachment and growth, and is the key to the biofilm reactor. The choice of carrier plays a decisive role in the effect of sewage treatment. Among them,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00
CPCC02F3/00C02F2003/001
Inventor 蒋涛
Owner 成都其其小数科技有限公司
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