Cold rolling sludge(CRS)is a kind of hazardous waste generated during the cold-rolling process in steel plants.As a highly emulsified mixture of oil,water,and solid phases,CRS has a very complex composition.Traditional treatment methods for CRS such as incineration or landfilling will cause serious environmental pollution.Currently,the technologies used for CRS treatment include pyrolysis,solvent extraction,and thermochemical cleaning,which separate the oil and solid phases,and recycle them separately.CRS wastewater contains high concentrations of organic pollutants,which is typically treated by using a combined process of"pre-treatment+deep degradation".Through the re-utilization of the oil and solid phases,as well as the reduction and detoxification of the water phase,it is possible to achieve the resource recovery of CRS and turn wastes into valued materials.
关键词
冷轧油泥/热解/溶剂萃取/油脂回收/水处理
Key words
cold rolling oil sludge/pyrolysis/solvent extraction/grease recovery/water treatment
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