Denitrification and dephosphorization filler for sewage and preparation method thereof
A technology for denitrification and dephosphorization, sewage, applied in water/sewage treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problem of inability to absorb and enrich nitrate, lack of denitrification and denitrification, and affect treatment rate, etc. problems, to achieve the effect of improving phosphorus removal effect, improving nitrogen removal effect, and broad application prospects
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[0030] Example 1
[0031] Take 40 parts of wheat straw, wash it with distilled water, soak it with 1.5mol / L ferric chloride solution for 12h, take it out and put it in a constant temperature drying oven at 80℃, then put it in a muffle furnace and roast it under anaerobic conditions for 3h , The roasting temperature is 400 ℃ for carbonization for 3 hours, take it out and pulverize with a pulverizer, and obtain modified biochar powder particles with a particle size of less than 50 meshes with a screen. Take 30 parts of wheat straw, wash it with distilled water, take it out and put it in a constant temperature drying box for drying at 80°C, take it out and pulverize it with a grinder, and obtain solid carbon source powder with a particle size of less than 100 meshes with a screen. Take 40 parts of iron powder, 30 parts of carbon powder and 7 parts of bentonite, which are all smaller than 100 mesh, mix with 20 parts of cement, the above-mentioned modified biochar and solid carbon sou...
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[0032] Example 2
[0033] Take 40 parts of wheat straw, wash it with distilled water, soak it with 1.5mol / L ferric chloride solution for 18h, take it out and put it in a constant temperature drying box to dry at 80℃, then put it in a muffle furnace and roast it under anaerobic conditions for 3h , The roasting temperature is 400 ℃ for carbonization for 3.5 hours, take it out and pulverize with a pulverizer, and obtain modified biochar powder with a particle size of less than 50 meshes with a screen. Take 30 parts of wheat straw, wash it with distilled water, take it out and put it into a constant temperature drying box to dry at 80°C, take it out and pulverize it with a grinder, and obtain solid carbon source powder with a particle size of less than 100 mesh with a screen. Take 40 parts of iron powder, 30 parts of carbon powder and 7 parts of bentonite, which are all smaller than 100 mesh, and mix with 25 parts of cement, the above-mentioned modified biochar and solid carbon sourc...
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