Study on ecological safety evaluation method for pyrolysis residue of oily sludge

Abstract The pollutants in the pyrolysis residue of oily sludge are harmful to the ecosystem, so it is necessary to evaluate its ecological security before it is discharged into the ecosystem. The evaluation methods based on physical and chemical indexes and the evaluation methods based on biological toxicity were summarized and compared in order to provide reference for the safety evaluation of the pyrolysis residue of oily sludge.