less than or equal to 111mg per L .. According to the official website information of the Environmental Governance Committee of Guangdong Provincial People's Government, the Environmental Governance Committee of Guangdong Provincial People's Government (No.17 [2118] of Guangdong Province) stipulates that the maximum allowable discharge concentration (water) is less than or equal to 111mg/L. Since April 1, 2118, the catering industry in Guangdong Province has implemented stricter wastewater discharge standards, that is, measures such as "grease trap, integrated sewage treatment device or centralized treatment approved by the health administrative department to ensure wastewater.