Materials for denitrification by autotrophic heterotrophic synergistic biological denitrification method, preparation method and application
A denitrification and biological technology, applied in the direction of chemical instruments and methods, water pollutants, anaerobic digestion treatment, etc., can solve the problems that cannot meet the technical requirements of long-term stable operation and deep denitrification, and achieve low equipment/environmental requirements, The effect of fast film formation and cheap and easy-to-obtain raw materials
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Embodiment 1
[0073] Example 1 Preparation of Materials for Nitrogen Removal by Autotrophic Heterotrophic Synergistic Biological Denitrification
[0074] 1) Take sulfur-containing substances and organic matter of agricultural and forestry wastes and mix them;
[0075] 2) adding a mineral binder to the mixture obtained in step 1), and mixing to obtain a mixture;
[0076] 3) using a mechanical granulator to granulate the mixture prepared in step 2) to obtain a solid material;
[0077] 4) heat-treating the solid material prepared in step 3), and cooling to room temperature in a dry environment after the heat treatment to obtain the material for denitrification by the autotrophic-heterotrophic synergistic biological denitrification method.
[0078] The sulfur-containing substance in step 1) is 100-200 mesh sulfur powder with a purity of more than 90%wt. The organic matter of the agricultural and forestry waste is wood chips with a particle size of 100-150 mesh. The preparation method is to co...
Embodiment 2
[0086] Example 2 Preparation of Materials for Nitrogen Removal by Autotrophic Heterotrophic Synergistic Biological Denitrification
[0087] 1) Take sulfur-containing substances and organic matter of agricultural and forestry wastes and mix them;
[0088] 2) adding a mineral binder to the mixture obtained in step 1), and mixing to obtain a mixture;
[0089] 3) using a mechanical granulator to granulate the mixture prepared in step 2) to obtain a solid material;
[0090] 4) heat-treating the solid material prepared in step 3), and cooling to room temperature in a dry environment after the heat treatment to obtain the material for denitrification by the autotrophic-heterotrophic synergistic biological denitrification method.
[0091] The sulfur-containing substance in step 1) is 100-200 mesh sulfur powder with a purity of more than 90%wt. The agricultural and forestry waste organic matter is corn stalks with a particle size of 100-150 mesh. The preparation method is to collect ...
Embodiment 3
[0098] Example 3 Preparation of Materials for Nitrogen Removal by Autotrophic Heterotrophic Synergistic Biological Denitrification
[0099] 1) Take sulfur-containing substances and organic matter of agricultural and forestry wastes and mix them;
[0100] 2) adding a mineral binder to the mixture obtained in step 1), and mixing to obtain a mixture;
[0101] 3) using a mechanical granulator to granulate the mixture prepared in step 2) to obtain a solid material;
[0102] 4) heat-treating the solid material prepared in step 3), and cooling to room temperature in a dry environment after the heat treatment to obtain the material for denitrification by the autotrophic-heterotrophic synergistic biological denitrification method.
[0103] The sulfur-containing substance in step 1) is 100-200 mesh sulfur powder with a purity of more than 90%wt. The agricultural and forestry waste organic matter is rice husk powder with a particle size of 100-150 mesh. The preparation method is as fol...
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