Lightweight 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
[0036] A light and high-efficiency biological filter material is made of 70% by weight of laterite ore, 15% by weight of fly ash, and 15% by weight of wheat straw. The filter material particles of the light and high-efficiency biological filter material are irregularly shaped filter materials after crushing, and the particle size is 3-8mm.
[0037] The preparation method is as follows: take 70% by weight of laterite ore, crush it into powder, and dry it at a temperature of 130-170°C; take 15% by weight of fly ash; take 15% by weight of wheat straw and pulverize, After the water content is lower than 3%, mix evenly, add water and mix the pellets, and 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
[0039] A light and high-efficiency biological filter material comprises 80% by weight of laterite, 15% by weight of fly ash, and 5% by weight of wheat straw.
[0040]The preparation method is as follows: take 80% by weight of laterite ore, crush it into powder, and dry it at a temperature of 130-170°C; take 15% by weight of fly ash; take 5% by weight of wheat straw and pulverize, After the water content is lower than 3%, mix evenly, add water and mix the pellets, and 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
[0042] A light and high-efficiency biological filter material comprises 70% by weight of laterite, 25% by weight of fly ash, and 5% by weight of wheat straw.
[0043] The preparation method is as follows: take 70% by weight of laterite ore, crush it into powder, and dry it at a temperature of 130-170°C; take 25% by weight of fly ash; take 5% by weight of wheat straw and pulverize, After the water content is lower than 3%, mix evenly, add water and mix the pellets, and 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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