Discharge standards for coking wastewater
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Emission standards for pollutants in the coking chemical industry: Direct emission refers to the act of a polluting entity discharging water pollutants into the environment, while indirect emission refers to the act of such an entity discharging water pollutants into public sewage treatment systems. The treated coking wastewater is used for quenching coke and is not sent to the public sewage treatment system; therefore it cannot be considered direct discharge. Moreover, since Table 2 has been in effect since January 1, 2015, why are the indirect discharge standards in Table 1 applied in section 4.1.5? It seems there is a contradiction – which standard should be followed?
In accordance with **standards, without violating** policies
It refers to **standards**; this aspect isn’t very clear throughout, and there are some contradictions. :)
. . . For enterprises, it’s not necessary to adhere to the highest standards; meeting the **industry policies is sufficient. When trying to understand these standards, it’s often unclear which ones actually need to be followed
I’m not familiar with the situation of your company either, but generally speaking, if something cannot be determined with certainty, it’s better to follow the highest standards as a precaution.
Implement the new standards, namely those for new enterprises: COD discharge limit of 80, ammonia nitrogen limit of 10, and a baseline water volume of 0.4 cubic meters per ton. You can take a look for specifics
Yes, it’s the same as the new enterprise standards after 2015.