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Effect of liquid-to-solid ratio on semi-solid Fenton process in hazardous solid waste detoxication

机译:固废比对危险固体废物脱毒中半固体芬顿工艺的影响

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摘要

The liquid-to-solid ratio (L/S) of semi-solid Fenton process (SSFP) designated for hazardous solid waste detoxication was investigated. The removal and minimization effects of o-nitroaniline (ONA) in simulate solid waste residue (SSWR) from organic arsenic industry was evaluated by total organic carbon (TOC) and ONA removal efficiency, respectively. Initially, Box-Behnken design (BBD) and response surface methodology (RSM) were used to optimize the key factors of SSFP. Results showed that the removal rates of TOC and ONA decreased as L/S increased. Subsequently, four target initial ONA concentrations including 100 mg kg~(-1),1 g kg~(-1),10 g kg~(-1), and 100 g kg~(-1) on a dry basis were evaluated for the effect of L/S. A significant cubic empirical model between the initial ONA concentration and L/S was successfully developed to predict the optimal L/S for given initial ONA concentration for SSFP. Moreover, an optimized operation strategy of multi-SSFP for different cases was determined based on the residual target pollutant concentration and the corresponding environmental conditions. It showed that the total L/S of multi-SSFP in all tested scenarios was no greater than 3.8, which is lower than the conventional slurry systems (L/ S ≥ 5). The multi-SSFP is environment-friendly when it used for detoxication of hazardous solid waste contaminated by ONA and provides a potential method for the detoxication of hazardous solid waste contaminated by organics.
机译:研究了用于危险固体废物脱毒的半固态Fenton工艺(SSFP)的液固比(L / S)。分别通过总有机碳(TOC)和ONA去除效率评估了邻硝基苯胺(ONA)在有机砷工业模拟固体废弃物(SSWR)中的去除效果和最小化效果。最初,使用Box-Behnken设计(BBD)和响应面方法(RSM)来优化SSFP的关键因素。结果表明,随着L / S的增加,TOC和ONA的去除率降低。随后,评估了四个目标ONA初始浓度,以干基计分别为100 mg kg〜(-1),1 g kg〜(-1),10 g kg〜(-1)和100 g kg〜(-1)。对于L / S的影响。成功建立了在初始ONA浓度和L / S之间的重要立方经验模型,以预测给定SSFP初始ONA浓度的最佳L / S。此外,根据残留目标污染物浓度和相应的环境条件,确定了针对不同情况的multi-SSFP优化操作策略。结果表明,在所有测试方案中,multi-SSFP的总L / S不大于3.8,低于常规浆料系统(L / S≥5)。 multi-SSFP在用于对被ONA污染的危险固体废物进行脱毒时是环保的,并提供了一种对由有机物污染的危险固体废物进行脱毒的潜在方法。

著录项

  • 来源
    《Waste Management》 |2011年第1期|p.124-130|共7页
  • 作者单位

    Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, China,College of Quality and Safety Engineering, China Jiliang University, Hangzhou 310018, China;

    College of Environmental Science and Engineering, Zhejiang Congshang University, Hangzhou 310012, China;

    College of Environmental Science and Engineering, Zhejiang Congshang University, Hangzhou 310012, China;

    College of Environmental Science and Engineering, Zhejiang Congshang University, Hangzhou 310012, China;

    School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou 310023, China;

    Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, China,College of Environmental Science and Engineering, Zhejiang Congshang University, Hangzhou 310012, China,Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    SWR: olid waste residual (mg kg~(-1) on dry basis); ONA: o-nitroaniline; L/S: liquid-to-solid ratio; SSFP: semi-solid fenton process; BBD: box-behnken design et al;

    机译:SWR:废渣残留量(以干基计;mg kg〜(-1));ONA:邻硝基苯胺;L / S:液固比;SSFP:半固态芬顿法;BBD:box-behnken设计等;

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