Analysis and Research on Zero Discharge Technology for Desulfurization Wastewater
In order to better understand the current technical status of zero discharge of desulfurization wastewater,this paper expounds the principle,classification,process,advantages and disadvantages of the three stages of zero discharge pretreatment,concentration reduction and drying and solidification of desulfurization wastewater through the review and retrieval of technical literature on desulfurization wastewater.Through the field investigation of each power plant,the technical status of contemporary power plants is analyzed and expounded.The results show that the six types of technologies of concentration and solidification have their own advantages and shortcomings,and all have high social benefits;waste heat should be used as the concentrated heat source,and the operation cost of auxiliary steam should be high;air concentration and evaporation have the advantages of advanced technology,stable operation and low cost,so different power plants can choose appropriate technical and technological solutions according to their own actual conditions and local conditions.
desulfurization wastewaterzero dischargethree effect concentrationair concentrationflue gas concentration
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