Abstract: Abstract:The Huadian Baotou Hexi Power Plant uses the output water of the Baotou Southern Suburb Sewage Treatment Plant and the output water of the Advanced Treatment Station of the Baotou Steel Company as own water source. The treatment technology “Biological aerated filter + Lime clarifier + Vfilter” was adopted to treat the water, and the treated water was reused as supplementary water of circulating water. The fresh water resource was saved, and the contradiction of insufficient water resource was relieved. The economic benefit and social effect of the project are favorable.

Key words: Keywords:reclaimed water, biological aerated filter (BAF), clarifier, Vfilter