Abstract: The principle and process flow of a new treatment system of flushing slag water were introduced. The core technology of waste water purification for flushing slag water treatment system is flocculation and sedimentation, and the key point is control of addition dosage. The optimum flocculent quantity was determined by experiments and the good flocculation was obtained. The application of the flushing slag water treatment system in Wenzhou Power Plant was described in detail.

Key words: treatment system of flushing slag water, principle of waste water purification, process flow, addition dosage