Research on Optimization of Total Nitrogen Peak Suppression in Wastewater Treatment Based on the Data Driven Method

Table 1

Maximum allowable emission concentration of pollutants (daily average value); unit: mg/L.

Number	Variable name	Standard I		Standard II	Standard III
1	BOD	50	60	100	120
2	COD	10	20	30	60
3	SS	10	20	30	50
4	Animal and vegetable oils	1	3	5	20
5	Petroleum	1	3	5	15
6	Total nitrogen	15	20	—	—
7	Ammonia nitrogen	5 (8)	8 (15)	25 (30)	—
8	TP	0.5	1	3	5
9	pH	6–9

Note. The first level standard is divided into categories A and B; the values outside the brackets for ammonia nitrogen are the control indicators when the water temperature is >12°C, and the values inside the brackets are the control indicators when the water temperature is <12°C.