电絮凝调质改善污泥脱水性能的研究
Research on the Improvement of Sludge Dewatering Performance by Electroflocculation
叶典坤 1薛智超 1席梓鸣 1张圆堂 1杨静晶 1樊菲 1于晓艳1
作者信息
- 1. 太原工业学院环境与安全工程系,山西 太原 030008
- 折叠
摘要
通过电絮凝电压、极板间距、污泥初始pH及阳极材料等操作参数对污泥机械脱水效果影响进行考察,结果得出,相比原泥,当电压 16 V、电絮凝 20 min时,脱水后污泥含水率和比阻(SRF)分别降低了 15%和1.74×1013 m/kg;极板间距为40 mm且阳极材料采用铁板时污泥的脱水性能更佳.污泥初始pH值为 3～5 时,污泥脱水后泥饼的含水率降低了约 7.79%,SRF降低了 1.54×1013 m/kg.通过响应曲面法电絮凝法操作参数的优化,得出当污泥pH为3.03,电压为 16.22 V和电絮凝 18.61 min时,污泥脱水性能较好,此时脱水后污泥的含水率为 57.86%,SRF为 5.5×1011 m/kg,较单因素实验中的最佳含水率与SRF各降低了 2.16%、7.7×1012 m/kg.
Abstract
The effects of operating parameters such as electrocoagulation voltage,electrode spacing,initial pH of sludge,and anode material on sludge dewatering efficiency was investigated.The results showed that when the voltage was 16 V and electrocoagulation was lasted for 20 minutes,the water content of the dehydrated sludge and SRF decreased by 15%and 1.74×1013 m/kg,respectively,compared with the original sludge.It has a better dewatering performance when 40 mm of the spacing between electrodes and using iron anode.When the initial pH value of sludge was 3～5,the water content after sludge dewatering and SRF decreased by about 7.79%and 1.54×1013 m/kg,respectively.By optimizing the operating parameters of the response surface method,it was found that the sludge dewatering performance was optimum when 3.03 of the initial pH,16.22 V of voltage and lasting for 18.61 min,and the water content and SRF was 57.86%and 5.5×1011 m/kg,which was 2.16%and 7.7×1012 m/kg lower than that of the single factor experiment,respectively.
关键词
污泥/脱水/电絮凝/响应曲面法Key words
sludge/dewatering/electrocoagulation/response surface method引用本文复制引用
出版年
2024
NETL
NSTL
万方数据