Abstract: Metallurgy silicon steel production process needs to adopt a coating, oil film protection technology, this will produce a lot of silicon steel coatings wastewater, the COD of the wastewater is much high and with bad biochemical, so the method of treatment technology is difficult to ensure normal water drainage standard. This research introducd a new type of water treatment technology which effectively solved the problem of waste water treatment high concentration COD.

Key words: Acrylic acid, Coagulant, Coagulant aid, COD, Fenton reageut