Anthracite, commonly known as "white coal", is the most deeply coalized coal.Adopting anthracite as raw material, it is crushed, and screened twice, with high mechanical strength, good compression resistance and stable chemical properties.In addition, the surface of anthracite particles is rough, with good adsorption capacity, large porosity (>50%), high dirt-containing capacity, due to the light weight of the required backwash intensity is low, can save a lot of backwash water and electricity.All technical indicators have reached and exceeded the standards of the Ministry of Construction (CJ/T43-2005).
Common Specifications:
The particle size range of anthracite filter media used for domestic drinking water is:0.8-1.2mm、1.2-2mm；
The particle size range of anthracite filter media for industrial water is:1-2mm、2-4mm、4-6mm.
Chemically stable and does not contain toxic substances.Insoluble in acidic, alkaline and neutral water.The soluble rate of hydrochloric acid is 0.68% (ministry standard is 3.5) in all kinds of water sources can achieve good purification effect.
The particle size is well-graded and the specific surface area is large.The appearance of the product is spherical and angular, with good gloss, sieved by mechanical vibration for three times, and the gradation is in line with the relevant technical indicators.The coefficient of uniformity (K60) is not greater than 1.5, the coefficient of inhomogeneity (K80) is between 1.6 and 2.0, and the void ratio is greater than 50%.
After the flocculation of fine suspended solid particles in water by adding medicine, anthracite filter media can be filtered out. It is used for the filtration and purification of domestic water supply and industrial water supply and drainage.
Anthracite filter media and quartz sand filter media with the use of China's current promotion of double-layer rapid filtration and three-layer filtration, canister filtration of the best materials.It is the most effective way to improve the filtration speed to increase the water output per unit area and multiply the sewage intercepting capacity, reduce the project cost and reduce the floor space.It is widely used in the process of water quality treatment before and after production in chemical industry, metallurgy, thermoelectricity, pharmacy, papermaking, printing and dyeing, food and so on.
It is used for the filtration and purification treatment of domestic water supply and industrial water supply, and the use parameters are determined according to the form of the filter tank when it is used:
General double-layer filter pavement thickness of 300-400mm; normal filtration speed 10-14m / h, forced filtration speed of 14-18m / h;
The thickness of the three-layer filter material is 450mm, the normal filtration speed is 18-20m/h, and the forced filtration speed is 20-25m/h.
Filter backwashing is done by water rinsing, vapor rinsing or supplemented by surface rinsing.
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Physical property |
||
|
Project |
Unit |
Data |
|
Proportion |
g/cm3 |
1.50 |
|
Capacity |
g/cm3 |
0.90 |
|
Crushing rate |
% |
≤0.80 |
|
Porosity |
% |
47-53 |
|
Attrition rate |
% |
≤0.55 |
|
Hydrochloric acid solubility rate |
% |
≤0.55 |
|
Unevenness coefficient |
K80 |
1.8-2.0 |
|
Mohs hardness |
|
3.2-3.8 |
|
Ash powder ratio |
% |
≤2 |
|
Chemical property |
||
|
Project |
Unit |
Data |
|
C |
% |
65-68%、70-80% |
|
Pb |
% |
0.045 |
|
Cu |
% |
0.028 |
|
Zn |
% |
0.04 |
|
S |
% |
0.05 |
|
All other heavy metals do not exceed drinking water standards |
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