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Ceramic aggregate biological filler and preparation method thereof

A technology of biological filler and ceramsite, which is applied in the field of waste slag utilization, can solve the problems of resource waste and no comprehensive utilization, and achieve long-term stable strength

Inactive Publication Date: 2009-08-26
ARCHITECTURAL DESIGN RES INST OF GUIZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above technologies only use the organic matter contained in the sludge or the inorganic matter contained in the sludge, and do not comprehensively utilize the organic matter and inorganic matter in it, resulting in a certain waste of resources

Method used

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  • Ceramic aggregate biological filler and preparation method thereof
  • Ceramic aggregate biological filler and preparation method thereof
  • Ceramic aggregate biological filler and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] Embodiment 1 of the present invention: preparation of ceramsite biological filler:

[0112] (1) Weigh respectively 50g of fly ash (collected from the flue gas of coal combustion), 174g of dewatered sludge (moisture content is 77%, dry weight is 40g) of sewage treatment plant, clay (true density is 1.65g / cm 3 ) 10g and aluminum sulfate octadecahydrate 3g, add water and stir evenly to make 8-10mm particles;

[0113] (2) Dry the particles at a constant temperature of 100°C for 70 minutes;

[0114] (3) Put the dried particles into a muffle furnace and heat to 450°C, preheat for 13 minutes, then raise the temperature to 900°C for 5 minutes to prevent the particles from being heated unevenly due to excessive heating, and then heat up to 1100°C for 20 minutes minutes, cool in the furnace to 300-400°C and take it out to obtain yellow ceramsite biological filler.

Embodiment 2

[0115] Embodiment 2 of the present invention: preparation of ceramsite biological filler:

[0116] (1) Weigh the dried and pulverized clay (true density is 1.65g / cm 3 ) 10g in a 500ml beaker, add about 10ml of water and stir into a paste; then weigh 175g of sewage treatment plant sludge with a water content of 80% (dry weight is 35g, directly used without drying) into the beaker, and stir slightly; Then weigh 55g of fly ash (collected by the chimney of the power plant) and 4g of aluminum sulfate octadecahydrate and add them into the beaker together, stir evenly, and it is advisable to make some 8mm spherical particles with no yellow clay on the beaker wall.

[0117] (2) Put the spherical particles into a constant temperature oven at 105°C and dry for 60 minutes;

[0118] (3) Put the dried particles into the muffle furnace and heat to 400°C (heating rate 35°C / min), preheat for 10 minutes, then raise the temperature to 800°C for 2 minutes to prevent the particles from being hea...

Embodiment 3

[0119] Embodiment 3 of the present invention: preparation of ceramsite biological filler:

[0120] (1) Take by weighing fly ash 60g, sewage treatment plant sludge 176.5g (moisture content is 83%, dry weight is 30g), clay 10g and aluminum sulfate octadecahydrate 6g, add water and stir to make granules;

[0121] (2) Dry the particles at a constant temperature of 110°C for 80 minutes;

[0122] (3) Put the dried particles into an electric heating furnace and heat to 500°C, preheat for 12 minutes, then heat up to 1200°C and burn for 25 minutes, then cool in the furnace to 500-600°C and take it out to obtain ceramsite biological filler .

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Abstract

The invention discloses ceramic aggregate biological filler and a preparation method thereof. The filler uses coal ash and sludge as main raw materials, clay as binder, and aluminum sulfate octadeca hydrate or hydrogen peroxide solution as foaming agent, and is prepared by mixing the raw materials, the binder, the foaming agent and water, granulating and sintering at high temperature. Compared with the prior art, the main raw materials of the invention are solid waste materials, thereby reducing pollution of coal ash and sludge to environment and treating waste materials by waste materials; the coal ash can be directly used without complicated pretreatment; organic substance and inorganic substance in the sludge are used to reduce resource waste; hole structure of sludge ceramic aggregate is improved, the ceramic aggregate has loose and porous structure for enriching a great amount of microorganism in sewage, thereby being suitable for biological filler can realizing sewage treatment with high efficiency and low cost; the invention has simple manufacturing process, low cost, strong adaptability, and good economic benefit and social benefit.

Description

Technical field: [0001] The invention relates to a ceramsite biological filler and a preparation method thereof, in particular to a ceramsite biological filler prepared by using sewage treatment plant sludge and fly ash and a preparation method thereof, belonging to the technical field of waste residue utilization. Background technique: [0002] Fly ash belongs to the artificial pozzolanic material, which is fine ash collected from the flue gas of coal combustion. It is a kind of granular body with different sizes and irregular shapes, generally silver gray or gray, and black powdered coal The ash has a higher carbon content, and the proportion of coarse particles is larger. Fly ash particles are porous honeycomb structure with large specific surface area and high adsorption activity, and the particle size range of the particles is 0.5-300 μm. The physical properties of fly ash are shown in the table below: [0003] nature Density (kg / m 3 ) Bulk density ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B33/04C04B33/132C04B33/135C02F3/10
CPCY02P40/60Y02W10/10
Inventor 姚晓园魏琛建峥嵘陆天友雷文俊唐翌李倩秦礼琦何云黄传香盛贵尚隋天娥
Owner ARCHITECTURAL DESIGN RES INST OF GUIZHOU
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