褐铁矿/TiO2光催化降解低浓度造纸废水研究

Limonite/ TiO2 composite photocatalystic material prepared by sol-gel method showed that it had been loaded with a homogeneous TiO2 film on its surface, and it had a firm nuclear/membrane structure. The experiments of photocatalystic degradation treatment of papermaking wastewater using the self-made photocatalyst showed that: the removal rate of CODcr attained 70% after treatment and the residual CODcr was about 78.3mg/L as compared to 251mg/L of the influent, which accords with the national 1 discharge standard.