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In GB8978- 1996, the specific pollutant standard of citric acid emission was not found, but the following figure was found. Which is COD, BOD and SS?
GB8978- 1996 is a comprehensive wastewater discharge standard. According to the current environmental protection requirements, the wastewater generally entering the urban sewage pipe network is subject to the three-level comprehensive discharge standard.

The selection standard depends on the discharge direction of wastewater in this project, and the discharge standard is selected according to the discharge direction.

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