Abstract: According to the chemical monitor analysis and debugging of the latterly built domestic sewage recycle treatment system in Huadian Fularji General Electric Power Plant of China Huadian Corporation, the principle, the treating ability and the process flow of domestic sewage treatment system were discussed. Furthermore, the meanings of each chemical monitor parameters were explained. With the running of the system, the plant achieved the benefit of wastewater recycling and zero emissions.

Key words: domestic sewage, biological treatment, softening handling, biochemical oxygen demand, chemical oxygen demand, suspended solids