(1) Natural decomposition method: volatilization method; biological decomposition method; oxidation method; photolysis method. (2) Oxidation method: alkaline chlorination method: chlorine gas method, hypochlorite method, electrolytic regeneration method; SO 2 -air method; ozonation method; hydrogen peroxide method; acidification-volatilization-re-neutralization-AVR method ; assay: iron sulfide, ion exchange and acid regeneration process, ion flotation; electrolysis; transformation - precipitation method: into thiocyanate, ferrocyanide into - ferricyanide. Scented Candles,Glass Jar Candle,Scented Tin Candles,Scented Soy Tin Candles SHEN YANG XINGSHENG Wax Co.,Ltd , https://www.xswaxsupply.com