Microalgal culture based biogas liquid treatment device and method
A technology for biogas slurry treatment and microalgae cultivation, applied in enzymatic/microbiology devices, filtration treatment, multi-stage water treatment, etc. Algae utilization efficiency and other issues, to achieve the effect of high value-added comprehensive utilization, harmless and simple structure
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[0037] Example 1
[0038] Taking pig-raising biogas slurry as the treatment object, the ammonia nitrogen in the biogas slurry is 1073mg / L, total alkalinity is 5422mg / L, total phosphorus is 46mg / L, and COD is 2655mg / L.
[0039] The following steps are used for the treatment of biogas slurry, and the details are as follows:
[0040] (1) After natural precipitation and coagulation sedimentation to remove part of COD, ammonia nitrogen, total phosphorus and large suspended solids, the original biogas slurry is obtained. The original biogas slurry enters the regulating tank and is diluted 4 times by the effluent of the microalgae concentration device , Enter the biogas slurry treatment device, and control the flow of biogas slurry to 0.3L / h when entering water.
[0041] When influent, the ammonia nitrogen in the biogas slurry is 257mg / L, the total alkalinity is 1218mg / L, the total phosphorus is 9mg / L, and the COD is 579mg / L.
[0042] (2) The biogas slurry passes through the solid filler in t...
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