On October 25, 2021, the data on the Shaanxi Province Emission Permit Enterprise Monitoring Information Release Platform showed that the total nitrogen of the Shaanxi Province XXX Wastewater Treatment Plant exceeded the emission standards, and PECC reflected the situation to the local environmental protection bureau through 12369 and microblogging, as shown in the figure below:

December 3, 2021 received the local environmental protection bureau investigation reply: hello! In response to the environmental problems of the sewage treatment plant total nitrogen emission exceeding the standard, the local ecological environment bureau attaches great importance to the problem, immediately arranged for law enforcement officers to investigate the problem, and issued a supervisory letter, requiring the sewage treatment plant to take scientific and effective measures to speed up the rectification.