The high concentration of chloride ions in terminal wastewater of coal-fired power plants is a key factor restricting wastewater reuse and zero discharge of wastewater from the whole plant. Conventional desulfurization wastewater treatment methods

such as chemical precipitation

evaporation and crystallization

and emerging zero discharge technologies like flue evaporation technology

cannot only effectively solve the negative problems caused by high chlorine situation

but also limit its security application. Based on this

this paper proposes electrochlorination technology coupled with existing wastewater treatment methods to treat this wastewater. The current mechanism of electrochlorination technology and the research progress of electrode materials are summarized. Followed by the CER theory

factors affecting the economic and reliable operation of the electrolytic desulfurization wastewater process are analyzed

including the regulation of electrolysis conditions and the selection of process flow. The influence of chemical oxygen demand(CODcr)

ammonia nitrogen

F~–

Ca~(2+)

Mg~(2+) and heavy metal ions in the wastewater of coal-fired power plants on electrolysis is also analyzed. Finally

the economic potential of this process compared with other zero-discharge desulfurization wastewater technologies is analyzed.It is believed that with the continuous improvement of the chlorine evolution reaction mechanism and the continuous improvement of the technical feasibility of electrolytic chlorine production technology

it also has a certain competitive advantage in terms of economy. However

how to reduce the tendency of plate fouling

the adverse effects of other ions on electrolysis

and how to effectively control the interface reaction

still need more attempts.