Step description; Put the sludge into a blender, add a stabilizer accounting for 65,438+00% ~ 30% of the sludge mass, add a certain amount of water, stir for 3~5 minutes, fully mix the sludge with the stabilizer, and then discharge the sludge for 3~5 years.
Days (it is best to keep in good health under the condition of plastic film covering or keeping in good health). Then the treated samples are tested and classified according to the Identification Standard for Hazardous Wastes (GB 508.1-2007): higher than hazardous wastes.
The material threshold is judged as hazardous waste and enters the hazardous waste landfill; If it is lower than the threshold of hazardous waste, it is judged as general solid waste and enters the landfill. Metal recovery and sludge recovery are carried out according to the actual situation.
Before and after treatment:
Details can be consulted, heavy metal doctor.