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Fluidized bed biofilm filler, and preparation method and filler structure thereof

A technology of biofilm and fluidized bed, which is applied in the fields of packing structure, fluidized bed biofilm packing, and preparation. It can solve the problems of reducing the use efficiency of biological packing, complicated installation of fixed packing, and increasing operating costs, and achieves high efficiency and Long-term expansion of processing scale, improvement of finishing processing effect, and effect of lifting processing capacity

Active Publication Date: 2014-04-09
VISBE XIAMEN ENVIRONMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there are such problems in the sewage treatment biofilm packing market: for example, the fixed packing with a large specific surface area needs to be bound, which causes problems such as complicated installation, easy corrosion, and difficult maintenance; while the suspended packing that can be directly added and taken out Fillers have problems such as relatively small specific surface area, insufficient hydrophilicity, and poor toxicity resistance.
These two problems greatly reduce the use efficiency of biological fillers and increase operating costs

Method used

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  • Fluidized bed biofilm filler, and preparation method and filler structure thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take 84kg of high-density polyethylene, 1.5kg of titanate, 5kg of activated carbon, 2kg of antioxidant 1010, 3kg of chitin, and 4.5kg of polyvinyl alcohol; put the above materials into a mixer for stirring and mixing, and mix the mixture Move it into a twin-screw injection molding machine and extrude it through a mold, and carry out temperature-programmed roasting in a muffle furnace, and cool after roasting to make the required filler with a density of 0.98g / cm3.

Embodiment 2

[0029] Take 90kg of high-density polypropylene, 1kg of aluminate, 3kg of graphite, 1kg of antioxidant TPP, 2kg of starch, and 3kg of polyacrylate; put the above materials into a mixer for stirring and mixing, and move the mixed mixture into a twin-screw In the injection molding machine, it is extruded through a mold, and is roasted in a muffle furnace with a temperature increase. After roasting, it is cooled to make the required filler, and its density is 0.96g / cm3.

Embodiment 3

[0031] Take 80kg of high-density polypropylene, 1kg of aluminate, 1kg of titanate, 5kg of carbon black, 5kg of activated carbon, 3kg of antioxidant 1076, 2kg of chitosan, and 3kg of polyvinyl alcohol; put the above materials into a mixer for Stir and mix, move the mixed mixture into a twin-screw injection molding machine, extrude through a mold, and perform temperature-programmed roasting in a muffle furnace, cool after roasting, and make the required filler with a density of 0.98g / cm3.

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Abstract

The invention discloses fluidized bed biofilm filler. The fluidized bed biofilm filler is characterized by being prepared from the following components in weight percentage: 80-90% of high-density polyethylene or polypropylene, 1-3% of a coupling reagent, 3-10% of inorganic carbon material, 1-3% of an antioxidant, 2-6% of a nutritional agent, and 3-8% of a hydrophilic agent. The invention also comprises a preparation method of the fluidized bed biofilm filler and a filler structure of the fluidized bed biofilm filler prepared from the method. The fluidized bed biofilm filler, and the preparation method and the filler structure thereof have the characteristics of large specific surface area, good hydrophilcity, strong toxicity resistance, easiness in biofilm formation and fluidization and the like.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a fluidized bed biofilm filler, a preparation method and a filler structure. Background technique [0002] Because of its characteristics of high BOD volume load, small footprint, large solid-liquid contact area, and good treatment effect, biological fluidized bed has been paid more and more attention by researchers at home and abroad. As a carrier of microorganisms in a biological fluidized bed, biofilm fillers affect the growth, reproduction and shedding of microorganisms. Therefore, the selection of biological fillers and the optimization of their structural parameters are related to the rapid start-up and treatment effect of fluidized bed reactors. one of the key factors. [0003] At present, there are such problems in the sewage treatment biofilm filler market: For example, the fixed filler with a large specific surface area needs to be bound, which causes problems such as co...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F3/10B29C47/00
CPCY02W10/10
Inventor 王俊川江嘉晶夏天华陈刚
Owner VISBE XIAMEN ENVIRONMENT TECH CO LTD
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