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Porous fiber material carrier, preparation method thereof and application of carrier in wastewater treatment

A technology of porous fibers and fibrous materials, applied in the field of porous fiber material carriers and their preparation, can solve the problems of poor treatment effect and long start-up period of wastewater treatment, and achieve the effects of good mass transfer performance, stable reaction and low price

Active Publication Date: 2017-11-17
NANJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: the technical problem to be solved by this invention is to provide a kind of anaerobic expanded granular sludge bed added with porous fiber material carrier for the deficiencies in the prior art, so as to solve the long start-up period of the prior art EGSB reactor for treating wastewater, Dealing with poor performance

Method used

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  • Porous fiber material carrier, preparation method thereof and application of carrier in wastewater treatment
  • Porous fiber material carrier, preparation method thereof and application of carrier in wastewater treatment
  • Porous fiber material carrier, preparation method thereof and application of carrier in wastewater treatment

Examples

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Embodiment 1

[0033] Wash the polyethylene fiber in pure water for 2 hours, then soak it in more than 95% alcohol for 6 hours, then rinse it with alcohol, dry it, and crush it. It is prepared by 3D printing technology. It is short cylindrical and has a density of 0.95g / cm 3 , the aperture is 12mm, the diameter is 25mm, the height is 10mm, and the porosity is 70%.

Embodiment 2

[0035] Wash the polyethylene fiber and polyether polyol in pure water for 2 hours, then soak in 95% alcohol for 6 hours, then rinse with alcohol, dry, pulverize, mix completely according to the mass ratio of 9:1, pass Prepared by 3D printing technology, low cylindrical shape, density 0.96g / cm 3 , the aperture is 15mm, the diameter is 30mm, the height is 10mm, and the porosity is 70%.

Embodiment 3

[0037] Wash the polyurethane fibers and polyvinyl alcohol fibers in pure water for 2 hours, and then soak them in more than 95% alcohol for 6 hours. Prepared by printing technology, cube, density 0.9g / cm 3 , the aperture is 3mm, the side length is 15mm, and the porosity is 30%.

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Abstract

The invention discloses a porous fiber material carrier and a preparation method thereof. A fiber material is put in water for cleaning and then is put in ethyl alcohol for soaking, then thorough flushing is performed with ethyl alcohol, the fiber material is dried, smashed and mixed and then is added into a 3D printer for heating and melting, a carrier digital model file is used as a basis, a 3D printing technology is applied to prepare the carrier in a layer-by-layer printing mode. The invention also discloses application of an anaerobic expanded granular sludge bed added with the porous fiber material carrier in treatment of ethyl alcohol waste water. The reactor operation is stable in the starting process of a reactor, the problem of sudden acidification does not occur, the starting time is obviously shortened, the sludge amount in effluent is obviously decreased, the effluent is approximately clarified, and accordingly later discharge treatment is promoted.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a porous fiber material carrier, its preparation method and its application in wastewater treatment. Background technique [0002] The expanded granular sludge bed (EGSB) reactor is the third generation anaerobic reactor developed on the basis of the up-flow anaerobic sludge bed (UASB) reactor. In the early 1980s, Professor LETTINGA of Wageingen Agricultural University in the Netherlands realized the effective separation of hydraulic retention time (HRT) and sludge retention time (SRT) by adding a three-phase separator to the traditional anaerobic reactor, thus inventing Upflow anaerobic sludge bed reactor. Although the UASB reactor can retain a large amount of activated sludge, which has laid the foundation for its efficient operation, but due to insufficient mixing strength in the reactor, the bottom sludge is operated at an ultra-high load, thereby inhibiting the activity of m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F103/32
CPCC02F3/28C02F2103/32
Inventor 应汉杰朱杰陈勇周精卫刘桂文
Owner NANJING UNIV OF TECH
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