Preparation method of biofilter packing and biological aerated filter

A biofilter and particle technology, which is applied in the preparation of biofilter filler and in the field of biological aerated filters, can solve the problems of limiting the promotion and application of biological aerated filters, poor microbial adsorption, and small porosity, and achieves Good for attachment growth, not easy to harden, and high mechanical strength

Active Publication Date: 2020-05-12
HUNAN SANYOU ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Filler is an important part of biological aerated filter. Common fillers include quartz sand, anthracite, activated carbon, garnet, ilmenite and other natural materials, as well as fired materials such as ceramsite. These fillers a

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation method of biofilter filler, comprises the steps:

[0026] (1) Fe 3 o 4 The powder and activated carbon powder are added in the KH550 aqueous solution at a weight ratio of 6:1. The dosage of KH550 is 1% of the weight of the solids. Ultrasound and stir for 40 minutes at 50°C to make a suspension;

[0027] (2) add carboxymethyl cellulose in the suspension that step (1) makes, consumption is Fe 3 o 4 3% of the total weight of the powder and activated carbon powder is prepared into a slurry, then dried and ground to make a composite powder;

[0028] (3) Crushing volcanic rock (black) with a crusher, sieving after crushing, and selecting particles with a particle size of 1 to 2 mm as raw material;

[0029] (4) Weigh 35 parts by weight of raw meal, 25 parts by weight of fly ash, 35 parts by weight of clay, 5 parts by weight of pore-forming agent, and 42 parts by weight of the above-mentioned composite powder in step (3), mix at high speed, and add 30 parts ...

Embodiment 2

[0032] The preparation method of biofilter filler, comprises the steps:

[0033] (1) Fe 3 o 4 The powder and activated carbon powder are added in the KH550 aqueous solution at a weight ratio of 8:1. The dosage of KH550 is 1.2% of the weight of the solids. Ultrasound and stir for 50 minutes at 50°C to make a suspension;

[0034] (2) add carboxymethyl cellulose in the suspension that step (1) makes, consumption is Fe 3 o 4 5% of the total weight of powder and activated carbon powder is prepared into a slurry, then dried and ground to make a composite powder;

[0035] (3) Crushing volcanic rock (black) with a crusher, sieving after crushing, and selecting particles with a particle size of 1 to 2 mm as raw material;

[0036] (4) Weigh 40 parts by weight of raw meal, 28 parts by weight of fly ash, 40 parts by weight of clay, 6 parts by weight of pore-forming agent, and 45 parts by weight of the above-mentioned composite powder in step (3), mix at high speed, and add 35 parts by...

Embodiment 3

[0039] The preparation method of biofilter filler, comprises the steps:

[0040] (1) Fe 3 o 4 The powder and activated carbon powder are added in the KH550 aqueous solution in a weight ratio of 4:1. The dosage of KH550 is 0.5% of the weight of the solids. Ultrasound and stir for 50 minutes at 50°C to make a suspension;

[0041] (2) add carboxymethyl cellulose in the suspension that step (1) makes, consumption is Fe 3 o 4 5% of the total weight of powder and activated carbon powder is prepared into a slurry, then dried and ground to make a composite powder;

[0042] (3) Crushing volcanic rock (black) with a crusher, sieving after crushing, and selecting particles with a particle size of 1 to 2 mm as raw material;

[0043] (4) Weigh 30 parts by weight of raw meal, 22 parts by weight of fly ash, 30 parts by weight of clay, 4 parts by weight of pore-forming agent, and 35 parts by weight of the above-mentioned composite powder in step (3), mix at high speed, and add 25 parts by...

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PUM

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Abstract

The invention discloses a preparation method of a biofilter packing and a biological aerated filter. The preparation method comprises the following steps: adding Fe3O4 powder and activated carbon powder into an aqueous solution of a silane coupling agent, and carrying out ultrasonic treatment and stirring so as to prepare a suspension; adding carboxymethyl cellulose into the suspension to prepareslurry, and then drying and grinding the slurry to prepare composite powder; weighing 30-40 parts by weight of volcanic particles, 20-30 parts by weight of fly ash, 30-40 parts by weight of clay, 4-8parts by weight of a pore forming agent and 35-50 parts by weight of the composite powder, uniformly mixing, adding 25-35 parts by weight of water, and granulating to prepare particles; preheating theparticles to 105-115 DEG C, roasting at 500-700 DEG C, cooling and magnetizing to prepare the biofilter packing. The method is simple in process, and the prepared biofilter packing is high in ammonia-nitrogen removal rate and strong in decontamination capability, and can ensure better mechanical strength.

Description

technical field [0001] The invention relates to the technical field of biological filters, in particular to a preparation method of a biological filter filler and a biological aerated filter. Background technique [0002] The biological aerated filter technology integrates sewage biological treatment and deep filtration. Compared with traditional sewage treatment processes, it has many advantages such as small footprint, low energy consumption, high efficiency, and easy management. Filler is an important part of biological aerated filter. Common fillers include quartz sand, anthracite, activated carbon, garnet, ilmenite and other natural materials, as well as fired materials such as ceramsite. These fillers are more or less There are defects such as poor strength, small porosity, and poor adsorption to microorganisms, which limit the popularization and application of biological aerated filter technology in the field of water treatment. Contents of the invention [0003] T...

Claims

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Application Information

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IPC IPC(8): C02F3/10C02F101/16
CPCC02F3/105C02F2101/16Y02W10/10
Inventor 易境巢真韩红波柴晓利侯丹
Owner HUNAN SANYOU ENVIRONMENTAL TECH CO LTD
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