Biologically reinforced activated carbon and method for removing ammonia nitrogen in low-temperature water source through activated carbon
A technology of biological enhancement and activated carbon, applied in biological water/sewage treatment, chemical instruments and methods, water pollutants, etc., can solve problems such as increasing the difficulty of treatment, poor biodegradability, and complex components of organic pollutants
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Embodiment 1
[0018] Example 1. Preparation of bioenhanced activated carbon.
[0019] 1) Activated carbon pre-loaded carbon source process: Prepare a glucose solution with a concentration of 100mg / L-C, sterilize at 120°C and 120kPa for 30 minutes; put 5g of dry activated carbon into the sterilized and cooled glucose solution, and completely immerse the activated carbon in the solution It is advisable; at 20°C to 25°C, shake at 100r / min for 24h, then take out the activated carbon and rinse it with sterile water for 3 times to obtain activated carbon pre-loaded with carbon source;
[0020] 2) Functional flora loading process (bioaugmentation): transfer the activated carbon preloaded with carbon source to 100mL low temperature resistant heterotrophic nitrifying bacteria solution (OD 600 ≥0.8), cultured in a shaker at 2°C for 48 hours, rinsed with sterile water three times after taking it out, and obtained bio-augmented activated carbon (BEAC) loaded with low-temperature resistant functional fl...
Embodiment 2
[0021] Example 2. Preparation of bioenhanced activated carbon.
[0022] 1) Activated carbon pre-loaded carbon source process: Prepare a glucose solution with a concentration of 100mg / L-C, sterilize at 120°C and 120kPa for 30 minutes; put 5g of dry activated carbon into the sterilized and cooled glucose solution, and completely immerse the activated carbon in the solution It is advisable; at 20°C to 25°C, shake at 100r / min for 48h, then take out the activated carbon and wash it with sterile water for 3 times to obtain activated carbon pre-loaded with carbon source;
[0023] 2) Functional flora loading process (bioaugmentation): transfer the activated carbon preloaded with carbon source to 100mL low temperature resistant heterotrophic nitrifying bacteria solution (OD 600 ≥0.8), cultured in a shaker at 8°C for 96 hours, washed with sterile water three times after taking it out, and obtained bioaugmented activated carbon (BEAC) loaded with low temperature resistant functional flor...
Embodiment 3
[0024] Embodiment 3. The method for removing ammonia nitrogen in the low-temperature water source.
[0025] The method for removing ammonia nitrogen in low-temperature water sources described in this example refers to purifying low-temperature water sources by using the bio-enhanced activated carbon prepared above, placing the bio-enhanced activated carbon in low-temperature water sources at 2-8°C, and purifying the water sources for 0.5-4 hours.
[0026] In order to investigate the removal effect of this method on ammonia nitrogen in low-temperature water sources, this example uses raw water from the Songhua River as the test raw water. After the raw water is filtered through a 0.45 micron cellulose acetate membrane (it can be stored at 4°C for 7 days), ammonium chloride is artificially added to adjust the concentration of ammonia nitrogen. About 2mg / L. Taking the bioenhanced activated carbon prepared in Example 1 as an example, place the bioenhanced activated carbon in a 250...
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