Under the background of modern industrial development,more and more hazardous solid waste is discharged.If it cannot be properly treated,it may cause pollution to the environment such as soil,atmosphere and water.During the pretreatment of hazardous solid waste,such as dehydration and deoiling,acidification and demulsification,and air flotation separation,attention should be paid to the prevention and control of potential environmental risks,so as to ensure the treatment effect of hazardous waste and prevent various environmental problems.In this paper,the basic overview of hazardous solid waste pretreatment was discussed,the importance of environmental risk prevention of hazardous solid waste pretreatment project was elaborated in detail,and several effective control measures were proposed for reference from the two aspects of environmental risk identification and risk prevention measures around the actual case.
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