Highly effective filtering material for biology and its preparation method
A kind of biological filter material and high-efficiency technology, which can be used in sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc. It can solve the problems of low specific surface area and porosity, low porosity, and difficult to form film, etc. Achieve the effect of saving backwash water, high biological holding capacity, and simple backwashing
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Embodiment 1
[0031] A high-efficiency biological filter material comprises 70% laterite ore and 30% fly ash by weight. The filter material particle is a broken filter material with an irregular shape, and its particle size is 3-8mm.
[0032] Its preparation method: take 70% by weight of laterite ore, crush it into powder, and dry it at a temperature of 130-170°C; take 30% by weight of fly ash, grind it so that the water content is less than 3%, and mix evenly , add water to mix pellets, the particle size is 8-20mm. After drying, it is calcined in a kiln at a temperature of 1050-1150 ° C. After leaving the kiln, it is naturally cooled, crushed, rolled to remove edges and corners, and sieved to make the particle size 3-8mm.
Embodiment 2
[0034] A high-efficiency biological filter material comprises 90% laterite ore and 10% fly ash by weight. The filter material particle is a broken filter material with an irregular shape, and its particle size is 3-8mm.
[0035] Its preparation method: take 90% by weight of laterite ore, crush it into powder, and dry it at a temperature of 130-170°C; take 10% by weight of fly ash, grind it so that the water content is less than 3%, and mix evenly , add water to mix pellets, the particle size is 8-20mm. After drying, it is calcined in a kiln at a temperature of 1100-1200 ° C. After leaving the kiln, it is naturally cooled, crushed, rolled to remove edges and corners, and sieved to make the particle size 3-8mm.
Embodiment 3
[0037] A high-efficiency biological filter material comprises 80% laterite ore and 20% fly ash by weight. The filter material particle is a broken filter material with an irregular shape, and its particle size is 3-8mm.
[0038] Its production method: take 80% by weight of laterite ore, crush it into powder, and dry it at a temperature of 130-170°C; take 20% by weight of fly ash, crush it so that the water content is less than 3%, and mix it evenly , add water to mix pellets, the particle size is 8-20mm. After drying, it is calcined in a kiln at a temperature of 1150-1250 ° C. After leaving the kiln, it is naturally cooled, crushed, rolled to remove edges and corners, and sieved to make the particle size 3-8mm.
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