Agar gel particles and application thereof in biological nitrogen removal process of source water
A kind of technology of agar gel and granules, which is applied in the application field of water source water biological denitrification process, can solve the problems of large influence of denitrification temperature, complicated system start-up, secondary pollution of effluent, etc., to overcome the low nitrate nitrogen removal rate High performance, strong system adaptability and stable operation
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Embodiment 1
[0025] The agar gel particles include the following components in parts by weight: 10 parts of agar, 1 part of sodium alginate, 5 parts of ceramsite with a particle diameter of 35-60 mesh, and 100 parts of water. Prepared by the following steps: Weigh 10 parts of agar, 1 part of sodium alginate, 5 parts of ceramsite with a particle size of 35-60 mesh, add 100 parts of water, wherein the water is boiling water, mix well, transfer to a syringe, and squeeze Put it in a calcium chloride solution with a mass volume concentration (m / V) of 1%, shape it, let it stand and solidify for at least 12 hours, wash it with water for more than 2 times, fully dry the surface moisture, and cut it into a diameter of 2 to 3mm. For 3 ~ 6mm particles spare.
[0026] Start-up of the agar gel reactor 3: the prepared agar gel particles are packed into the agar gel reactor 3, and the agar gel reactor 3 is filled with source water with a nitrate nitrogen concentration of 50.89 mg / L, and left to stand Af...
Embodiment 2
[0031] Change the influent nitrate nitrogen concentration of agar gel reactor 3 in embodiment 1 to be 60.60mg / L on average, and HRT is 9.5h, and other conditions are the same as embodiment 1, at this moment, agar gel reactor 3 effluent nitrate nitrogen The average concentration is 8.58mg / L, and the average removal rate of nitrate nitrogen is 85.72%.
Embodiment 3
[0033] Change the influent nitrate nitrogen concentration of agar gel reactor 3 on average to be 42.96mg / L in embodiment 1, and other conditions are with embodiment 1, and at this moment, agar gel reactor 3 effluent nitrate nitrogen averages 22.94mg / L L, the average removal rate of nitrate nitrogen was 46.67%.
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