【摘要】 针对铅酸电池厂含铅工业污泥难以机械脱水减量的问题,本文分别采用过氧化氢调理、芬顿调理以及电化学高级氧化(电芬顿)调理方法对污泥进行了预处理,探究其对后续机械抽滤脱水减量化效果的影响。结果表明:三种调理预处理方式均会使污泥中部分絮体打破、黏度降低和脱水泥饼的挥发性悬浮物含量相对增加。采用优化的条件下,三种调理方法分别可促进后续的污泥机械抽滤脱水23.56 wt.%,47.18 wt.%和74.90 wt.%的相对质量减量,其中电化学高级氧化法减量程度最高,且污泥干基中铅含量由30.69 wt.%提高到43.16 wt.%,这有利于该污泥后续对铅资源化回收利用。更多还原

【Abstract】 The lead-containing industrial sludge produced from lead-acid battery plant is difficult to mechanical dewater and realize volume reduction. In this study, the pretreating effect of hydrogen peroxide conditioning, Fenton conditioning and electrochemical advanced oxidation(electro-Fenton) conditioning methods on the subsequent mechanical dewater the sludge was explored. Experimental results indicated that the three pretreated methods could break some of the flocs, reduce sludge viscosity and relatively increase the content of volatile suspended solids in the mechanical dewatered sludge cake. Three conditioning methods can respectively promote the subsequent mechanical dewater of sludge by 23.56 wt.%, 47.18 wt.% and 74.90 wt.% mass reduction under optimized conditions. Among them, the electrochemical advanced oxidation method exhibited the highest reduction degree, and the lead content in the dry sludge was increased from 30.69 wt.% to 43.16 wt.%, which was beneficial to the subsequent recycling and utilization of lead from the sludge.更多还原