Incineration disposal of hazardous waste in rotary kiln is the core technology of CEP. High-temperature incineration is carried out in incinerator and secondary combustion chamber system so as to realize reduction and harmless disposal of hazardous waste. With the new type of skid-mounted steam turbine generator unit, the waste heat in the process of hazardous waste incineration can be given full play.
By means of flue gas purification processes such as “emergency cooling deacidification + dry deacidification + activated carbon adsorption + bag filter + secondary wet deacidification + flue gas reheating”, the high-temperature incineration flue gas is safely discharged through the chimney up to the standard (achieve the EU’s 2010-75EC Standard).
Physicochemical treatment is a method to treat hazardous waste by means of physicochemical process. The common treatments are flotation, solvent extraction and stabilization/immobilization. This treatment is mainly used for treating waste liquid containing heavy metals (waste liquid containing chromium, etc.), waste acid and alkali, etc. Through redox reaction, precipitation and neutralization reaction, harmless disposal of hazardous waste is conducted.
The safe landfill of hazardous waste is different from that of household waste. As the final destination of hazardous waste after harmless disposal, the site of safe landfill should be selected in strict accordance with the “National Industrial Standards for the Construction of Safe Landfill” and “Standards of Pollution Control over Hazardous Waste Landfill”. The geological structure of the site should be relatively simple and stable without active faults, which can fully meet the requirements of the basic layer of the landfill.
Pyrometallurgy is an important means of comprehensive utilization of hazardous waste resources. That is, under the action of high temperature and through a series of reduction reactions, the sludge and waste residue containing multi-metals such as copper, nickel can finally produce recycling products such as anode coppers, mattes, nickel mattes.
Make the best of everything and turn waste into treasure. Recycling for comprehensive utilization is an important means to solve the problem of resources, which is of great significance to save resources, improve economic benefits, realize optimal allocation of resources and sustainable development.
The useful metal contained in the raw material is transferred to the liquid phase by means of chemical reaction after hazardous waste is in touch with the solvent. The purification liquid, after the impurity ion is separated through the purification plant, separates and enriches its components through the extraction process, and is finally recycled in the form of metal.
For hazardous waste of chemical residual liquid, liquid distillation and gas extraction can be used for recycling and comprehensive utilization. Through distillation reaction, esterification reaction, neutralization, washing, distillation and other deep processing processes, the chemical hazardous waste, represented by residual liquid of acrylic acid and ester, can separate acrylates with purity greater than 99.5%. The distillation residue is returned to the distillation still for further refining, and the residue from distillation reaction and tail gas of the process are sent to the incinerator for incineration.