Thus, the 3D characteristic fluorescence indices could render the informations concerning the variations of the pollutant species, composition and con- centration in the wastewater treatment process.

• 污水生物处理前后特征荧光峰中心位置和强度均发生明显的改变，表明污水中有机物的相对组成和含量随生物处理过程而变化。