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Effect of Iron-Carbon Micro-Electrolysis-Fenton on the Dewatering Performance of Sludge

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Abstract

In this paper, combined with iron-carbon micro-electrolysis-Fenton method, the sludge was adjusted, and the cracking performance and dewatering performance of the sludge were studied. Single factor experiments show that when the amount of iron powder is 1.2 g/L, the reaction time is 45 min, H2 O 2When the dosage was 4.2 g/L, the protein and polysaccharide content in the sludge decreased by 46.8 and 20.6, respectively. Compared with the original sludge %. Compared with the original sludge, the COD of the supernatant of the solution increased by 10.1%. The minimum moisture content of the treated sludge cake was 69%, and the SRF value was significantly reduced.The lowest value is 2.687×10 12 m/kg. During the micro-electric dust removal sludge, the Fe 2+can form a Fenton reagent with H2 O 2, thereby reducing the amount of additional iron powder that needs to be added in the conventional Fenton reaction. Three-dimensional fluorescence spectroscopy analysis showed that the humic acid and fulvic acid in the supernatant of the iron-carbon micro-electrolysis-Fenton conditioning solution increased more than after single electrolysis, indicating that the dehydration performance of the sludge was better.The Fenton reagent is formed , thereby reducing the amount of iron powder that needs to be added extra in the conventional Fenton reaction.

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The data set used and/or analyzed in the current study can be obtained from the corresponding author upon reasonable request.

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Funding

All funds come from Shaanxi University of Science and Technology. The funds are used to purchase laboratory equipment and chemicals.

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Authors and Affiliations

  1. School of Environmental Science and Engineering, Shaanxi University of Science and Technology , Xi’an, China

    Shaolan Ding, Zhen Zhao, Qianqian Tian & Danqing Li

  2. School of Arts and Sciences , Shaanxi University of Science and Technology , Xi’an, China

    Huijun Ren

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  1. Shaolan Ding
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  2. Zhen Zhao
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  3. Qianqian Tian
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  4. Danqing Li
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Contributions

All authors contributed to the concept and design of the research. Data preparation, data collection and analysis were carried out by Ding Shaolan, Zhao Zhen, Tian Qianqian, Li Danqing and Ren Huijun. The first draft of the manuscript was written by Zhen Zhao, and all authors commented on previous versions of the manuscript. The final manuscript read and approved by all authors.

Ding Shaolan: Ideas; formulate or develop overall research goals and objectives

Zhao Zhen, Tian Qianqian, Li Danqing: Provide research materials, reagents, materials, patients, laboratory samples, instruments, computing resources or other analytical tools; methodological development or design; model creation

Zhao Zhen, Ren Huijun: Preparation, creation and/or introduction of published works, especially writing the first draft (including substantive translation)

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Correspondence to Zhen Zhao.

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Ding, S., Zhao, Z., Tian, Q. et al. Effect of Iron-Carbon Micro-Electrolysis-Fenton on the Dewatering Performance of Sludge. Environ Sci Pollut Res 28, 47126–47135 (2021). https://doi.org/10.1007/s11356-021-13514-4

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  • DOI: https://doi.org/10.1007/s11356-021-13514-4

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