Theoretically, all kinds of carbon sources can ensure that the total nitrogen in the effluent reaches the emission standard, but several factors should be considered:
1. Cost of carbon source dosing: the dosing cost is a comprehensive algorithm of equivalent cod price of carbon source + dosing amount, which needs to be determined by theoretical calculation and actual operation dosing amount;
2. Sludge production rate of carbon source adding carbon source will definitely increase the sludge production, and the sludge treatment cost is very high, which is an important item that must be considered when selecting carbon source.
3. To ensure the stability of sewage operation, the purpose of adding carbon source is to remove nitrogen. Therefore, when selecting carbon source, consideration should be given to the stability of the operation of the sewage treatment plant, such as avoiding sludge bulking, rising COD of effluent, accumulation of nitroso nitrogen, etc.
According to the above, the selection of carbon sources is not a simple economic account, but closely combined with the reality of stable operation. Scientific selection of carbon source can effectively reduce the operating cost of the sewage treatment plant and ensure the stable operation of the sewage treatment plant.
