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Honeycomb modified biological stuffing applied to water treatment and preparation method thereof

A technology of biological filler and water treatment, applied in the direction of adsorption water/sewage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc. Attachment growth is easier and tighter, and the effect of multiple attachment growth points

Inactive Publication Date: 2013-07-31
上海立源生态工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Activated carbon has great potential in the biodegradation of wastewater, but at present, activated carbon is used more directly as a biological carrier or through the addition of activated carbon to strengthen the treatment process, and the cost of use is relatively high.

Method used

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  • Honeycomb modified biological stuffing applied to water treatment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: 497.5 g of polypropylene particles and 2.5 g of activated carbon with a particle size of 0.01 mm were weighed. The polypropylene granules were moved into the extruder and molded through a filler die. The section of the filler 100 was a hexagonal honeycomb structure, and 500 pieces were cut. Then use a sandblasting machine to evenly embed and distribute activated carbon on the inner and outer surfaces 101 of the filler, thereby obtaining activated carbon modified hydrophilic filler, and the density of the prepared filler is about 0.98g / cm 3 .

[0024] The activated carbon modified hydrophilic filler and ordinary polypropylene plastic filler prepared above were respectively placed in the MBBR reaction tank under the same conditions, and a comparative test of domestic sewage treatment was carried out. The influent CODcr is 250-400mg / L, the activated sludge concentration is 10g / L, and the aeration rate is 3mg / L. After 5 days, the activated carbon modified hydrop...

Embodiment 2

[0025] Embodiment 2: Weigh 225 g of polypropylene particles and polyethylene particles each, and 50 g of activated carbon with a particle size of 0.5 mm. The polypropylene granules and polyethylene granules were moved into the extruder, shaped by a filler mold, the cross-section was a hexagonal honeycomb structure, and 500 fillers were obtained by cutting. Then use a sandblasting machine to evenly embed activated carbon on the inner and outer surfaces of the filler to obtain activated carbon modified hydrophilic filler. The density of the prepared filler is about 0.93g / cm 3 .

[0026] The experimental results of sewage treatment show that the film-hanging time of the activated carbon modified hydrophilic filler system prepared in this example is 5 days, and the CODcr removal rate is 89% after the system is stable, while the CODcr removal rate of the ordinary polypropylene plastic packing system is only 75%. .

Embodiment 3

[0027] Embodiment 3: Weigh 375g of polyethylene particles and 125g of activated carbon with a particle size of 2mm. The polyethylene pellets were moved into the extruder and shaped by a filler die with a hexagonal honeycomb structure in section, and 500 fillers were obtained by cutting. Then use a sandblasting machine to evenly embed activated carbon on the inner and outer surfaces of the filler to obtain activated carbon modified hydrophilic filler. The density of the prepared filler is about 0.86g / cm 3 .

[0028] The experimental results of sewage treatment show that the film-hanging time of the activated carbon modified hydrophilic packing system prepared in this example is 4 days, and the CODcr removal rate after 4 days has reached 90%, while the CODcr removal rate of the ordinary polyethylene plastic packing system is only 70%. %.

[0029] Hybrid

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Abstract

The invention discloses a honeycomb modified biological stuffing applied to water treatment and a preparation method thereof. The stuffing is prepared from a macro molecule base material, the cross section of the stuffing is of a honeycomb structure, and activated carbon particles are embedded in and distributed on the internal and external surfaces of honeycombs of the stuffing. Compared with common biological stuffing in the prior art, the modified honeycomb biological stuffing has the advantages that hydrophily is stronger, the mass transfer performance and the attached biomass are increased, the aeration impact resistance and the load impact resistance are improved, and the microorganisms are easily attached and grow, thereby shortening the biofilm formation period.

Description

technical field [0001] The invention belongs to the technical field of water treatment materials, in particular to the modification of a honeycomb biological filler. Background technique [0002] Biofiller is the core component of biofilm water treatment technology, and the performance of the filler has a great influence on the water treatment process. At present, a variety of new fillers have been developed in the wastewater biological treatment process in China, but the existing fillers are insufficient in terms of the film-forming period, the amount of film-forming, and the tightness between the film and the packing. If the hydrophilicity of the material is properly improved, it is expected to greatly improve the mass transfer, film formation and water treatment performance of the filler. [0003] At present, many researchers have explored the role of activated carbon in wastewater degradation. Activated carbon has excellent adsorption capacity, which can concentrate th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/10C02F1/28
CPCY02W10/10
Inventor 徐立群刘希邈范志伟
Owner 上海立源生态工程有限公司
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