2026年 05期

臭氧-净水厂污泥基活性炭的土臭素去除效能

Removal efficiency of geosmin using ozone-water treatment plant sludge-based activated carbon


摘要(Abstract):

针对净水厂污泥资源化利用率低、净水过程中土臭素等嗅味物质去除难度大且成本高等问题,通过联用臭氧氧化技术优化净水厂污泥基活性炭(基础组)制备工艺,制得臭氧-净水厂污泥基活性炭(自制组),利用正交实验法优化联用工艺参数,设计自制组与臭氧-商业活性炭(商业组)对照试验,考察自制组的土臭素去除效能,并分析自制组的经济效益。结果表明:基础组的碘值可达493.54 mg/g,多点BET(Brunauer-Emmett-Teller)比表面积为553.416 2 m2/g, DR(Dubinin-Radushkevich)微孔比表面积占比为91.5%,经臭氧氧化,表面生成的含氧官能团有利于吸附土臭素;自制组的土臭素去除率可达92.95%,并且随着进水中土臭素的质量浓度及酸碱度pH的增大,土臭素去除率均表现出先增后减的趋势,当进水中土臭素的质量浓度为150 ng/L且pH为7时,土臭素去除率达到最大值94.26%;自制组与商业组的前30 d出水中土臭素去除率均大于90%,自制组的前15 d出水中土臭素的质量浓度均小于10 ng/L, 30 d后出水中土臭素的质量浓度仍小于商业组的,表明自制组有较强的污染物截留能力,每年可节省成本并获得收益约7.388×106元,经济实用潜力巨大。

关键词(KeyWords):吸附剂;臭氧-净水厂污泥基活性炭;正交实验法;土臭素;工艺优化

基金项目(Foundation):山东省自然科学基金项目(ZR2023ME143)

作者(Author):怀磊,张守彬,任文祎,李泉荃,肖传晶

DOI:10.13349/j.cnki.jdxbn.20260626.001

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