By calculating the pollution equivalent number as 31.24, according to the national regulations, the charging standard for each pollution equivalent number is 1.7 yuan, and then implementing the double charging policy and multiplying it by the regional adjustment coefficient (1.2 in urban area, 1.1 in suburban area and 1.1 in rural area), it is calculated that each table in urban catering industry should be charged with 51.8 yuan per month, 46.6 yuan per table in suburban catering industry and 46.6 yuan per table in rural catering industry.

each table discharges 1.4 tons of sewage every day. The concentration of chemical oxygen consumption in sewage is 1.521 mg/L, the concentration of animal and vegetable oil is 1.33 mg/L, and the concentration of suspended sewage is 671 mg/L..

polluters shall pay the sewage charges in accordance with the following provisions:

(1) If pollutants are discharged into the atmosphere or the ocean in accordance with the provisions of the Law on the Prevention and Control of Air Pollution and the Law on the Protection of the Marine Environment, the sewage charges shall be paid according to the types and quantities of pollutants discharged.

(2) If pollutants are discharged into water bodies according to the provisions of the Water Pollution Prevention Law, the sewage charges shall be paid according to the types and quantities of pollutants discharged; If the pollutants discharged into the water body exceed the national or local discharge standards, the sewage charges shall be doubled according to the types and quantities of pollutants discharged.

(3) In accordance with the provisions of the Law on the Prevention and Control of Environmental Pollution by Solid Waste, if no facilities or places for the storage or disposal of industrial solid waste are built, or if the facilities or places for the storage or disposal of industrial solid waste do not meet the environmental protection standards, the sewage charges shall be paid according to the types and quantities of pollutants discharged; If the disposal of hazardous waste by landfill does not conform to the relevant provisions of the state, the pollutant discharge fee for hazardous waste shall be paid according to the type and quantity of pollutants discharged.

(4) in accordance with the provisions of the law on the prevention and control of environmental noise pollution, if the environmental noise pollution exceeds the national environmental noise standard, the sewage charges shall be paid according to the excessive sound level of the discharged noise.

The polluter pays the sewage charges, which does not exempt him from the responsibilities of preventing and controlling pollution, compensating pollution damage and other responsibilities stipulated by laws and administrative regulations.

for the above contents, please refer to the regulations on the collection and use of sewage charges of Baidu Encyclopedia.