Light biological carrier for water treatment, and preparation method and application of light biological carrier

A biological carrier and water treatment technology, applied in the field of water treatment, can solve the problems of poor pore-forming effect, large specific surface area and high porosity, and achieve the effect of increasing the amount of microorganisms attached to the surface, large specific surface area and large porosity

Active Publication Date: 2013-11-06
广州市佳境水处理技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pore-forming agent uses waste biomass materials, which are cheap and easy to obtain, and the prepared lightweight biological carrier has a density close to that of water, a surface uniformly covered with sharp-edged protrusions, a large specific surface area, high porosity, high strength, and stability It has the advantages of good resistance, easy microbial attachment and film formation, etc. It aims to solve the problem of using chemical pore-forming agents as pore-forming agents, which are not only expensive, but also have poor pore-forming effects.

Method used

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  • Light biological carrier for water treatment, and preparation method and application of light biological carrier

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The raw materials of the light biological carrier used for water treatment in this embodiment are calculated by mass percentage, which are: clay 40%, silt 25%, perlite 20%, rice husk (i.e. rice husk) 7%, wood chips 7%, MgCO 3 1%.

[0047] The light biological carrier used for water treatment in this embodiment is prepared in the following way:

[0048] 1. Dry the raw materials in the sun;

[0049] 2. The raw materials are clay 40%, silt 25%, perlite 20%, chaff 7%, sawdust 7%, MgCO 3 The proportion of 1% is mixed evenly;

[0050] 3. Send the batched raw materials into a ball mill to grind them into powder, and pass through a 200-mesh sieve;

[0051] 4. Add water to the well-mixed powder and stir evenly. The amount of water added is 15% of the weight of the powder. Put it into the granulator for granulation. The shape is spherical and the particle size is controlled at 3-8mm;

[0052] 5. Put the pellets into the rotary kiln and burn at 1000-1200°C for 20 minutes unti...

Embodiment 2

[0061] The raw materials of the light biological carrier used for water treatment in this embodiment are calculated by mass percentage, which are: clay 50%, silt 20%, perlite 20%, peanut shell 7%, wood chips 2%, MgCO 3 1%.

[0062] The light biological carrier used for water treatment in this embodiment is prepared in the following way:

[0063] 1. Dry the raw materials in the sun;

[0064] 2. The raw materials are clay 50%, silt 20%, perlite 20%, peanut shell 7%, sawdust 2%, MgCO 3 The proportion of 1% is mixed evenly;

[0065] 3. Send the batched raw materials into a ball mill to grind them into powder, and pass through a 200-mesh sieve;

[0066] 4. Add water to the well-mixed powder and stir evenly. The amount of water added is 20% of the weight of the powder. Put it into the granulator for granulation. The shape is spherical and the particle size is controlled at 3-8mm;

[0067] 5. Put the pellets into the rotary kiln and burn at 1000-1200°C for 20 minutes until vitrif...

Embodiment 3

[0073] The raw materials of the light biological carrier used for water treatment in this embodiment are calculated by mass percentage, which are: clay 45%, silt 20%, perlite 28%, peanut shell 3%, wood chips 2%, MgCO 3 2%.

[0074] The light biological carrier used for water treatment in this embodiment is prepared in the following way:

[0075] 1. Dry the raw materials in the sun;

[0076] 2. The raw materials are clay 45%, silt 20%, perlite 28%, peanut shell 3%, sawdust 2%, MgCO 3 The proportion of 2% is mixed evenly;

[0077] 3. Send the batched raw materials into a ball mill to grind them into powder, and pass through a 200-mesh sieve;

[0078] 4. Add water to the well-mixed powder and stir evenly. The amount of water added is 17% of the weight of the powder. Put it into the granulator for granulation. The shape is spherical and the particle size is controlled at 3-8mm;

[0079] 5. Put the pellets into the rotary kiln and burn at 1000-1200°C for 20 minutes until vitrif...

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Abstract

The invention discloses a light biological carrier for water treatment, and a preparation method and application of the light biological carrier. Raw materials for preparing the light biological carrier comprise, in weight percent, 40%-50% of clay, 20%-30% of sludge, 20%-30% of perlite, 5%-15% of biomass pore-forming agents and 1%-2% of chemical pore-forming agents. The biomass pore-forming agents serve as main pore-forming agents and are made of waste biomass materials, inexpensive and easy to obtain. The prepared light biological carrier has the advantages that the density of the carrier is close to that of water, the surface of the carrier is uniformly strewn with sharp-angled projections, the carrier is large in specific surface area, high in porosity and strength and fine in stability, microbial attachment and biofilm formation are easily realized and the like.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to a light biological carrier for water treatment, a preparation method and application thereof. Background technique [0002] Biological aerated filter is a biofilm sewage treatment process. This process mainly uses granular fillers as the carrier for biofilm attachment. Through the adsorption and interception of biofilm and extracellular polymers attached to the carrier, microbial oxidation To achieve the removal of pollutants in water. The biological aerated filter has a high concentration of microorganisms, integrates biological oxidation and interception of suspended solids, has the advantages of large volume load, hydraulic load, short hydraulic retention time, less infrastructure investment required, and good effluent quality. [0003] The fillers used in the biological aerated filter can be divided into inorganic fillers and organic polymer fillers according to the di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B38/06C04B33/22C02F3/00C02F3/10
CPCY02P40/60Y02W10/10Y02W10/37
Inventor 黄瑞敏刘欣文淦斌黄春梅
Owner 广州市佳境水处理技术工程有限公司
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