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Understand the advantages and disadvantages of industrial wastewater treatment process A/O

Dec 21, 2020

advantage:

High efficiency, high removal effect on organic matter and ammonia nitrogen in industrial wastewater;

Simple process, saving investment and low operating cost;

Anoxic denitrification process has high degradation efficiency for pollutants;

High volume load;

Anoxic/aerobic process has strong load impact resistance

Disadvantages:

Since there is no independent sludge return system, sludge with unique functions cannot be cultivated, and the degradation rate of refractory substances is low;

To improve the denitrification efficiency, the internal circulation ratio must be increased, thus increasing the operating cost. In addition, the internal circulation liquid comes from the aeration tank and contains a certain amount of DO, which makes it difficult for the A section to maintain an ideal anoxic state and affects denitrification. effect;

The influencing factors of the treatment effect include: hydraulic retention time, denitrification sludge concentration, total nitrogen concentration in influent, etc.

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