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Composite biological filter material for biological aeration filter tanks

An aerated biological filter and biological filter material technology, applied in sustainable biological treatment, biological water/sewage treatment, water pollutants, etc., can solve problems such as environmental pollution, unfavorable seawater recycling, etc. Conducive to hanging film and ensure the effect of filtering effect

Active Publication Date: 2016-12-14
FUJIAN MINDONG AQUATIC PROD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If these large amounts of ammonia nitrogen and nitrite cannot be properly treated, it will not only cause environmental pollution, but also be detrimental to the recycling of seawater

Method used

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  • Composite biological filter material for biological aeration filter tanks
  • Composite biological filter material for biological aeration filter tanks
  • Composite biological filter material for biological aeration filter tanks

Examples

Experimental program
Comparison scheme
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specific Embodiment approach

[0037] A composite biological filter material for biological aerated filter, characterized in that: it includes a cylindrical shell made of carbon fiber, the shell is provided with 1-3 coaxial diameter gradually reduced Cylindrical inner core, between the shell and the inner core and between the inner core and the inner core are provided with a plurality of connecting walls radially connected and made of carbon fiber; the cylindrical inner core (2) It is made of composite material, and the composite material is mainly prepared from the following components according to the following parts by mass: 45-55 parts of epoxy resin, 55-65 parts of glass fiber and 0.05-1 part of tea polyphenol extract;

[0038] The mass ratio of described epoxy resin and glass fiber is preferably 50:55;

[0039] The outer wall of the casing is provided with a plurality of first fiber tows 4 extending outward, and the two sides of each connecting wall 3 are respectively provided with a plurality of seco...

Embodiment 1

[0064] Such as figure 1 As shown, a composite biological filter material for biological aerated filter is characterized in that it includes a cylindrical shell made of carbon fiber, and two coaxial diameters are gradually reduced in the shell. The cylindrical inner core, the cylindrical inner core is made of composite material, and the composite material is mainly prepared from epoxy resin, glass fiber and tea polyphenol according to the mass ratio of 45:55:1 The composite material, between the shell and the inner core and between the inner core and the inner core is provided with a plurality of connecting walls radially connected and made of carbon fibers;

[0065] The outer wall of the housing is provided with a plurality of first fiber bundle connecting walls 4 extending outward, and each connecting wall 3 is provided with a plurality of second fiber bundles extending in the direction of the adjacent connecting wall 3 on both sides. bundle 5.

[0066] The carbon fiber she...

Embodiment 2

[0069] Such as figure 2 As shown, the first fiber tow 4 and the second fiber tow 5 are composed of a plurality of carbon fiber filaments 4-2 connecting walls of different lengths and acrylic fiber filament connecting walls 4-1 connecting walls staggered distribution, wherein The diameter of the acrylic fiber filament is 0.5-0.8 mm, and the diameter of the carbon fiber filament is 8-10 microns.

[0070] Adopting the above-mentioned technical scheme can maintain a high porosity for a long time, and at the same time increase the contact between filter materials, thereby increasing the contact between microorganisms, so that the dispersion is more uniform, and the ammonia nitrogen and nitrite can be decomposed more effectively , and the use of fiber filaments of different diameters can prevent the filter materials from being compacted. The expanded area of ​​1 kilogram of filter material in this embodiment is greater than 300m 2 .

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Abstract

The invention relates to a composite biological filter material for biological aeration filter tanks. The composite biological filter material has the advantages that the nitrifying bacterium aggregation efficiency can be improved, ammonia nitrogen and nitrite in wastewater in the biological aeration filter tanks can be efficiently treated, and other residues in the biological aeration filter tanks can be effectively adsorbed and filtered; contact between filter materials can be improved while the high porosity can be kept in a long-acting manner, fibers can be prevented from being compacted by one another, and accordingly filter effects and the service life of the composite biological filter material with the structure further can be guaranteed; contact between microorganisms in the composite biological filter material can be improved, and accordingly the ammonia hydrogen decomposition efficiency further can be optimized; the composite biological filter material with the structure is favorable for film culturing, and biological films are difficult to fall off during back flushing; the composite biological filter material is low in water flow resistance, difficult to block and uniform in water distribution and gas distribution; the composite biological filter material has rough surfaces and is high in film culturing speed, and microbial films are difficult to fall off during back flushing; as proved by practice, the composite biological filter material can resist shear actions of hydraulic power with different intensities, and the service life of the composite biological filter material is far longer than the service lives of other filter materials; the composite biological filter material has moderate density and is easy to suspend during back flushing, energy can be saved, and consumption can be reduced.

Description

technical field [0001] The invention relates to a biological filter material, in particular to a composite biological filter material used in an aerated biological filter tank. Background technique [0002] During the marine fish farming process, a lot of pollution will be produced, mainly including residual bait, excrement, mucus, chemical substances and therapeutic drug residues. Among them, the residual bait, excrement and mucus will produce a large amount of ammonia nitrogen and nitrite during the treatment process. If these large amounts of ammonia nitrogen and nitrite cannot be properly treated, it will not only cause environmental pollution, but also be detrimental to the recycling of seawater. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a composite biological filter material for biological aerated filter, which can improve the aggregation efficiency of nitrifying bacteria, efficiently treat the ...

Claims

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Application Information

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IPC IPC(8): C02F3/10C02F101/16C02F103/20
CPCC02F3/10C02F2101/16C02F2101/166C02F2103/20Y02W10/10
Inventor 全汉峰王兴春谢友佺施学文刘巧灵黄惠珍张芳芳范希军
Owner FUJIAN MINDONG AQUATIC PROD RES INST
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