Preparation method of modified biologically-activated filter fillings
A kind of biological and active technology, applied in the field of preparation of modified biological active filter filler, to achieve the effect of strengthening, shortening the film hanging period, and enhancing the adsorption effect
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Example Embodiment
[0028] Embodiment 1 The preparation method of modified biologically active filter filler includes the following steps:
[0029] (1) Wash the inorganic carrier ceramsite with a particle size of 3-8 mm, first soak it in hydrochloric acid with a molar concentration of 0.5 mol / l for 24 hours, and wash it with water until it is neutral; then use a hydroxide with a molar concentration of 0.5 mol / l Soaked in sodium for 24h, washed with water until neutral; then dried at 100°C for 5h to obtain dry filler.
[0030] (2) Put the dry filler into FeCl with a molar concentration of 1.0mol / l 3 In the metal salt solution, immerse and sonicate for 1 to 2 hours, dry at 100°C for 6 hours and sinter in a muffle furnace at 550°C for 5 hours to obtain a sintered material.
[0031] (3) Wash the sintered material after natural cooling, and dry it at 100°C for 3 hours to obtain a dry sintered material.
[0032] (4) Put the dry sintered material into a 2% mass concentration of microelement and nutrient-contain...
Example Embodiment
[0036] Embodiment 2 The preparation method of modified biologically active filter filler includes the following steps:
[0037] (1) Wash the inorganic carrier porous ceramic particles with a particle size of 3-8 mm, first soak in hydrochloric acid with a molar concentration of 2.0 mol / l for 12 hours, and wash until neutral; then use hydrogen with a molar concentration of 2.0 mol / l Soaked in sodium oxide for 12 hours, washed with water until neutral; then dried at 110°C for 3 hours to obtain a dry filler.
[0038] (2) Put the dry filler into AlCl with a molar concentration of 3.0 mol / l 3 In the metal salt solution, immerse and sonicate for 1 to 2 hours, dry at 110°C for 4, and sinter in a muffle furnace at 750°C for 3 hours to obtain a sintered material.
[0039] (3) Wash the sintered material after natural cooling and dry it at 110°C for 2 hours to obtain a dry sintered material.
[0040] (4) Put the dry sintered material into a 10% mass concentration of microelement and nutrient-cont...
Example Embodiment
[0044] Example 3 The preparation method of modified biologically active filter filler includes the following steps:
[0045] (1) Wash the inorganic carrier ceramsite with a particle size of 3-8 mm, first soak it in hydrochloric acid with a molar concentration of 1.0 mol / l for 18 hours, and wash it with water until it is neutral; then use a hydroxide with a molar concentration of 1.0 mol / l Soaked in sodium for 18h, washed with water until neutral; then dried at 105°C for 4h to obtain dry filler.
[0046] (2) Put the dry filler into Fe(NO) with a molar concentration of 2.0mol / l 3 ) 3 In the metal salt solution, immerse and sonicate for 1 to 2 hours, dry at 105°C for 5 hours, and sinter in a muffle furnace at 650°C for 4 hours to obtain a sintered material.
[0047] (3) Wash the sintered material after natural cooling, and dry it at 105°C for 2.5 hours to obtain a dry sintered material.
[0048] (4) Put the dry sintered material into the carrageenan solution containing trace elements and...
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