How to solve sewage treatment denitrification is not good

Poor denitrification of sewage treatment can be solved from the following aspects:

The problem of denitrification in sewage treatment can be solved from the following aspects: 1. The influence of temperature on denitrification is greater than that of other biological wastewater treatment processes. Generally, it is appropriate to maintain 20 ~ 40 ° C. In winter when the temperature is too low, measures such as increasing the residence time of sludge and reducing the load can be taken to maintain a good denitrification effect.

2, the pH value of the denitrification process is controlled at 7.0 ~ 8.0;

3. Oxygen has an inhibitory effect on denitrification and nitrogen removal. Generally, the dissolved oxygen in the denitrification reactor should be controlled below 0.5mg/L (activated sludge method) or below 1mg/L (biofilm method);

4, when the wastewater contains enough organic carbon sources, BOD5/TN> (3 ~ 5), no additional carbon source can be required. When the ratio of carbon to nitrogen in the wastewater is lower than this ratio, organic carbon needs to be added. Additional organic carbon mostly uses methanol.

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