Method for degrading organic wastewater through electrolytic stimulation of mineralized refuse supported microorganisms
A technology for microbial electrolysis and mineralization of garbage, applied in the field of environmental pollution control, can solve problems such as a single current range of bacterial flora, and achieve the effect of enhancing the treatment effect, facilitating degradation, and broadening the range of electrolysis current.
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Embodiment 1
[0018] Add Dye Orange II wastewater with a concentration of 35mg / L into the electrolytic cell, and then add the mineralized waste that has been crushed through a 100-mesh sieve and landfilled for 15 years. The solid-liquid mass ratio of the mineralized garbage and wastewater is 1:500. The electrode materials of both electrodes are graphite electrodes, the current of the electrolytic cell is connected, and the current between the two electrodes is 40mA. After 2 hours, the organic matter in the wastewater is oxidized and degraded, precipitated and separated, and the concentration of pollutants in the wastewater is analyzed, and the removal rate reaches 82.2%.
[0019] For the same wastewater, under the same conditions, but without adding mineralized waste, the pollutant removal rate was 30.1% in the same treatment time.
[0020] For the same wastewater, only adding mineralized waste without electricity, in the same treatment time, the pollutant removal rate is only 5.7%.
Embodiment 2
[0022] The methylene blue wastewater with a concentration of 35mg / L was added to the electrolytic cell, and then the mineralized waste that had been crushed through a 50-mesh sieve and landfill for 8 years was added. The solid-liquid mass ratio of the mineralized garbage and the wastewater was 1:1000. The materials are all graphite electrodes, the current of the electrolytic cell is turned on, and the current between the two electrodes is 5mA. After 5 hours, the organic matter in the wastewater is oxidized and degraded, and the organic matter in the wastewater is separated by precipitation. The concentration of pollutants in the wastewater is analyzed, and the removal rate reaches 82.2%. After precipitation and separation, the solid was left, and the same waste water was added, and the reaction was continued under the same conditions. After 5 hours, the removal rate was 84.5%.
[0023] For the same wastewater, under the same conditions, but without adding mineralized waste, the...
Embodiment 3
[0026] Phenol wastewater with a concentration of 10mg / L is continuously fed into the electrolytic cell with inlet and outlet, and then the mineralized waste that has been crushed through a 50-mesh sieve and buried for 8 years, the solid-liquid of the mineralized garbage and the wastewater in the electrolytic cell is added. The mass ratio is 1:500, the electrode materials of both electrodes of the electrolytic cell are graphite electrodes, the current of the electrolytic cell is turned on, the current between the two electrodes is 30 mA, and the residence time of the wastewater is 3 hours. After the overflow outlet, the solid and liquid are separated, and the pollutants in the water are analyzed. Concentration, after long-term operation, the removal rate is between 83.7% and 89.5%.
[0027] For the same wastewater, under the same conditions, but without adding mineralized waste, the pollutant removal rate is between 21.7% and 37.4% in the same treatment time.
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