Method for increasing methane production efficiency of continuous-flow anaerobic reactor by continuously adding Fe3O4 nanoparticles
An anaerobic reactor and nanoparticle technology, applied in chemical instruments and methods, anaerobic digestion treatment, water/sludge/sewage treatment, etc. Guaranteed efficient and fast operation
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specific Embodiment approach 1
[0020] Specific implementation mode one: this embodiment mode is by continuous dosing Fe 3 o 4 The method for improving the methane production efficiency of a continuous flow anaerobic reactor by nanoparticles is carried out in the following steps:
[0021] 1. Wastewater is installed in the water distribution tank, the influent flow rate of the anaerobic reactor is controlled to be 10L / d, the hydraulic retention time is 20h, the external circulation flow rate is 100L / d, the influent COD is 5000mg / L, and the sludge concentration is 10g / L, the temperature of the anaerobic reactor is controlled at 34-36°C, by adding NaHCO 3 The solution controls the pH of the anaerobic reactor to be 6.8 to 7.2;
[0022] 2. The number of daily modulation is 2 times, and the modulation method is to add Fe 3 o 4 Nanoparticles, dosing method is solid dosing or liquid dosing, Fe 3 o 4 The particle size range of nanoparticles is 40-80nm;
[0023] When solid dosing, Fe 3 o 4 Nanoparticles are ...
specific Embodiment approach 2
[0028] Embodiment 2: This embodiment is different from Embodiment 1 in that: in step 1, the temperature of the anaerobic reactor is controlled to 35°C. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0029] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: in step one, by adding NaHCO 3 The pH of the solution controlled anaerobic reactor was 7. Others are the same as in the first or second embodiment.
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