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Suspending stuffing for processing fluid bed biological film

A technology of suspended filler and biofilm, applied in the field of water treatment, can solve the problems of large amount of suspended filler, high investment cost of filler, insufficient specific surface area, etc. Effect

Active Publication Date: 2011-08-17
BEIJING CLP JIAMEI ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specific surface area of ​​the suspended filler obtained by this technology is only 600-1000m 2 / m 3 , the specific surface area is not large enough, the number of suspended fillers that need to be filled in the fluidized bed biofilm treatment system is huge, and the investment cost of fillers is high
[0007] There are also several companies in China that apply fluidized bed biofilm treatment system and suspended packing on the basis of introducing foreign technology. Because the suspended packing only imitates the level of foreign suspended packing, the promotion of this technology is affected. Therefore, a suitable Suspended packing of fluidized bed biofilm treatment system will be of great significance

Method used

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  • Suspending stuffing for processing fluid bed biological film
  • Suspending stuffing for processing fluid bed biological film
  • Suspending stuffing for processing fluid bed biological film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] The present embodiment manufactures suspension packing by following method:

[0060] 1. Heat rubber powder, volcanic rock powder, and adhesive in the rubber-plastic extruder while stirring until the adhesive melts;

[0061] 2. The uniformly mixed adhesive is wrapped on the surface of rubber powder and rock powder to obtain a mixture with a porous structure;

[0062] 3. Cut it into the desired shape to make the suspension filler.

[0063] image 3 It is the photograph of the cylindrical suspension filler that makes, and its each parameter is as shown in table 2.

[0064] Table 2: Technical parameters of the suspended filler prepared in Example 1

[0065]

Composition ratio (weight ratio)

specific surface area

(m 2 / m 3 )

wet density

(kg / m 3 )

particle average straight

Diameter (mm)

particle average length

degree(mm)

Rubber powder (40 mesh): volcanic rock

Powder (20 mesh): binder=100:

1...

Embodiment 2

[0071] In this example, the same method as in Example 1 was used to manufacture the suspended filler, the difference being that the various parameters of the suspended filler prepared in this example are shown in Table 4.

[0072] Table 4: Technical parameters of the suspension filler that embodiment 2 makes

[0073]

[0074] As shown in Table 4, the particle size of the volcanic rock powder used in this embodiment is 10 mesh. Although the specific surface area of ​​the filler prepared in this example is 15% smaller than that of Example 1, and its wet density is also lighter than that of water, this product can still reach the performance index of suspended filler, which is suitable for production and can be used for advanced treatment of urban sewage system.

Embodiment 3

[0076] In this example, the same method as in Example 1 was used to manufacture the suspended filler, the difference being that the various parameters of the suspended filler prepared in this example are shown in Table 5.

[0077] Table 5: Technical parameters of the suspension filler that embodiment 3 makes

[0078]

[0079] As shown in Table 5, the specific surface area of ​​the filler prepared in this example is 5% smaller than that of the filler prepared in Example 1, and its wet density is slightly heavier than water, which is suitable for the needs of different sewage treatment systems.

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Abstract

The invention discloses a suspending filler for treating a biomembrane of a fluidized bed, capable of treating urban wastewater, regenerated water, industrial wastewater and the like. The suspending filler prepared from lava rock powder made of lava, rubber powder and adhesive by processing; the suspending filler has a columnar shape, a spherical shape, a sheet shape, a massive shape or other irregular shapes. The suspending filler has the characteristics of large surface area, suitability for adsorption and growth of microorganism, light specific gravity, easy fluidization, high strength, uneasy abrasion, uneasy loss and the like. The suspending filler can realize circular fluidization in a biotreatment reaction pool so that the aged biomembrane naturally falls off and is refurbished andthe biomembrane adhered to the suspending filler keeps vigorous activity momently; and simultaneously, the suspending filler increases contact between the biomembrane and oxygen gas and oxygen transfer efficiency and farthest improves efficiency of biotreatment.

Description

technical field [0001] The invention relates to a suspended filler, in particular to a suspended filler used in fluidized bed biofilm treatment technology, and belongs to the technical field of water treatment. Background technique [0002] Fluidized bed biofilm treatment technology and biological aerated filter treatment technology have been widely used in advanced treatment systems of urban sewage, industrial wastewater and reclaimed water, and the main mechanism is biofilm method. [0003] The biofilm method uses some specific carriers as the place for microbial film growth and reproduction. The early biofilm carriers used natural materials such as slag, bamboo chips, and wood strips, and then developed honeycomb or corrugated types made of glass steel, plastic, etc. Stacked packing, suspended soft semi-soft packing, elastic three-dimensional packing, etc. These fillers are more suitable for fixed bed biofilm treatment system. However, these fillers have disadvantages s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/10
CPCY02W10/10
Inventor 谢长血
Owner BEIJING CLP JIAMEI ENVIRONMENTAL PROTECTION TECH
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