Preparation method of dephosphorization and denitrification type biological filter material and application of dephosphorization and denitrification type biological filter material to integrated treatment equipment for rural domestic sewage
A biological filter material and denitrification technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, anaerobic digestion treatment, etc. Reasonable ratio, enhanced market competitive advantage, low density effect
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Embodiment 1
[0040] The preparation method of the phosphorus and nitrogen removal type biological filter material and its application in the integrated rural domestic sewage treatment equipment are as follows:
[0041] (1) Use a crusher to crush the scraps of aerated concrete blocks to 0.8mm, and sieve them;
[0042] (2) Use a crusher to crush pyrite ore and other raw materials to 0.5mm, and sieve;
[0043] (3) Put the following components into the mixer according to the weight ratio and mix them: cement 16%, autoclaved aerated concrete crushed material 45%, fly ash 10%, pyrite powder 12%, lime 8%, gypsum powder 3 %, calcium bicarbonate 0.1%, the balance heavy calcium powder, and mix well;
[0044] (4) In the mixer, add a certain amount of water to the raw materials that have been mixed evenly in the mixer according to the mass ratio of 3:1 to the material mixed in step (3), and stir evenly, and use a granulator to prepare a pellet with a diameter of 8mm. raw material ball;
[0045] (5)...
Embodiment 2
[0048] The preparation method of the phosphorus and nitrogen removal type biological filter material and its application in the integrated rural domestic sewage treatment equipment are as follows:
[0049] (1) Use a crusher to crush the leftovers of aerated concrete blocks to less than 1mm, and sieve them;
[0050] (2) Use a crusher to crush the pyrrhotite ore to less than 0.6mm, and sieve it;
[0051] (3) Put the following components into the mixer according to the weight ratio and mix them: cement 18%, autoclaved aerated concrete crushed material 43%, fly ash 10%, pyrrhotite powder 10%, lime 9%, gypsum powder 3%, sodium bicarbonate 0.1%, the rest heavy calcium powder, and mix well;
[0052] (4) Granulation molding: Add water to the uniformly mixed raw materials in a mixer at a ratio of 2.5:1 by weight, and stir evenly, and use a granulator to prepare raw material balls with a diameter of 10mm;
[0053] (5) Send the raw meal balls into the autoclaved aerated concrete block cu...
Embodiment 3
[0056] The preparation method of the phosphorus and nitrogen removal type biological filter material and its application in the integrated rural domestic sewage treatment equipment are as follows:
[0057] (1) Use a crusher to crush the leftovers of aerated concrete blocks to below 325 mesh and sieve them;
[0058] (2) Use a crusher to crush pyrrhotite ore to below 325 mesh, and sieve;
[0059] (3) Put the following components into the mixer according to the weight ratio and mix them: cement 15%, autoclaved aerated concrete crushed material 46%, fly ash 10%, pyrrhotite powder 8%, lime 8%, gypsum powder 5%, sodium bicarbonate 0.15%, the rest heavy calcium powder, and mix well;
[0060] (4) Granulation molding: In the mixer, add water to the uniformly mixed raw materials according to the mass ratio of 3:1, and stir evenly, and use the granulator to prepare raw meal balls with a diameter of 7mm;
[0061] (5) Send the raw meal balls into the autoclaved aerated concrete block cur...
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