Fenton 体系可有效降解污泥中的胞外聚合物( EPS) , 改良污泥脱水性能。针对高有机质含量、 高黏粒含量的 超保水性污染底泥, 传统的絮凝脱水已不能满足需求, 系统研究了改良 Fenton 体系对疏浚底泥脱水性能的影响。 结果表明, Fenton 体系与无机改良剂联用时, 生石灰效果最佳, 优于石膏和粉煤灰; 当生石灰加入量为 1 %时, 底泥 比阻最小, 为 6. 19@ 10 12 m/kg, 比阻减小率为 55. 70 %。将 Fenton 体系与 CPAM 联用, 底泥脱水性明显最优; 当浓 度为 0. 1%的 CPAM 投入量为 50 mg/ L 时, 比阻为 0. 83@ 10 11 m/ kg, 比阻减小率可达 99. 37 %, 比仅使用 Fenton 处理的效果提高了 91. 54%。

Fenton system can degrade EPS in the sludge effectively and improve the performance of sludge sedimentation and flocculation. T he traditional technology is not suitable for the sludge of super water retention with high organic and clay con2 tents. In this paper, the effects of improved Fenton system on the dredged sludge dehydration were investigated. T he results showed that ( 1) quick lime has better effects than gypsum and fly ash when the Fenton system is combined with inorganic mod2 ifier; (2) when the quick lime amount is 1%, the SRF of dredged sludge is the lowest with a value of 6. 19@ 10 12 m/kg and the SRF reduction efficiency is 55. 70%; ( 3) sludge dehydration effect is the best when Fenton system is combined with CPAM; and ( 4) when the amount of 0. 1% CPAM is 50 mg/L, the SRF is 0. 83@ 10 11 m/kg and the SRF reduction efficiency is 99. 37%, which is about 91. 54% higher than that treated by Fenton system only.