芬顿调理对含铅工业污泥电渗透脱水减量效果的影响

针对铅酸电池厂含铅工业污泥难以脱水减量的问题，利用污泥中存在的Fe²⁺进行芬顿调理预处理，探究H₂O₂添加量对后续污泥电渗透脱水减量化效果的影响。结果表明：芬顿调理预处理会打破污泥中部分絮体，使污泥黏度由18.0 mPa·s降至4.7 mPa·s，污泥中部分无机离子在脱水过程中从污泥固相体系进入滤液中，造成后续电渗透脱水剩余泥饼的含水率由82.72%降至69.34%，挥发性悬浮物含量增加约30%。相对于原始污泥直接进行脱水，采用优化的H₂O₂添加量调理污泥可促进后续的污泥电渗透脱水减量66.20%，同时污泥干基中铅含量由265.2 g/kg提高到453.6 g/kg，这有利于污泥的后续资源化利用或无害化填埋处理。

Effect of Fenton conditioning on the reduction of lead-containing industrial sludge by electroosmotic dewatering

Aiming at the difficulty of dewatering and realizing volume reduction of the lead-containing industrial sludge produced from lead-acid battery plants, Fe2+ in the sludge was used to perform Fenton preconditioning, and the effect of different dosages of hydrogen peroxide on the subsequent electroosmotic dewatering and reduction of the sludge was explored. The experimental results showed that the sludge pretreated by Fenton conditioning would break some of the flocs and reduce sludge viscosity from 18.0 mPa·s to 4.7 mPa·s. Part of the inorganic ions in the sludge left the solid phase system and entered the filtrate during the dewatering process, resulting in the water content of the subsequent electroosmotic dewatered sludge cake reducing from 82.72% to 69.34% and the content of volatile suspended solids increasing about 30%. Compared with the direct dewatering of the original sludge, the optimized H2O2 addition could promote the subsequent reduction of 66.20% of sludge by electroosmotic dewatering. At the same time, Pb content in the dry basis was increased from 265.2 g/kg to 453.6 g/kg, which was beneficial for the subsequent resource utilization or harmless landfill treatment of the sludge.