the Technical of end-of-pipe management technology for pollution chemical oxygen demandisPhysical treatment + biological treatment，Its Technical efficiency of end-of-pipe management83 This dataset is derived from the Pollution Source Census Report and contains information on pollution emissions and related products. However, it does not include data on energy or chemical consumption, nor does it provide information on waste or co-product generation. When utilizing this dataset, please supplement the missing data based on actual conditions before use