超声- fenton氧化联合MAP化学沉淀法处理垃圾渗滤液的研究

Q3 Chemical Engineering Chemical Speciation and Bioavailability Pub Date : 2015-10-02 DOI:10.1080/09542299.2015.1118360

Jing Zhang, Tao Yang, Hongyu Wang, Kai Yang, Cheng-xiang Fang, Bin Lv, Xiao-jun Yang

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引用次数: 14

摘要

摘要本研究采用超声/Fenton氧化- MAP化学沉淀法对武汉市某卫生填埋场收集的垃圾渗滤液进行化学需氧量(COD)和氨氮去除。首先，采用超声处理和Fenton氧化处理分别处理垃圾渗滤液，在最佳反应条件下，COD浓度分别从842降至697 mg L−1和842降至133 mg L−1。然后，采用超声/Fenton氧化法处理相同的垃圾渗滤液。与单一Fenton处理相比，在相同H2O2耗量的情况下，超声/Fenton氧化处理可将COD去除率从84.05提高到90.88%。超声/Fenton氧化处理后，以Na2HPO4·12H2O和MgSO4·7H2O作为沉淀剂去除垃圾渗滤液中的氨氮，氨氮浓度由910 mg L−1降至11 mg L−1。实验结果表明，“超声/Fenton氧化- MAP化学沉淀法”是一种经济有效的处理垃圾渗滤液的方法。

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Study on treating old landfill leachate by Ultrasound–Fenton oxidation combined with MAP chemical precipitation

Abstract In this study, the “Ultrasound/Fenton oxidation – MAP chemical precipitation” method was used to remove chemical oxygen demand (COD) and ammonia nitrogen from the old landfill leachate which was collected from one sanitary landfill in Wuhan. Firstly, Ultrasound treatment and Fenton oxidation treatment were separately used to treat the old landfill leachate, and under their optimum reaction conditions, the COD concentration was degraded from 842 to 697 mg L−1 and from 842 to 133 mg L−1, respectively. Then, Ultrasound/Fenton oxidation treatment was used to treat the same old landfill leachate. Compared with the single Fenton treatment, Ultrasound/Fenton oxidation treatment could raise the COD removal efficiency from 84.05 to 90.88% with the same H2O2 consumption. After the Ultrasound/Fenton oxidation treatment, Na2HPO4·12H2O and MgSO4·7H2O were used as precipitation reagents to remove ammonia nitrogen from the old landfill leachate, and the ammonia nitrogen concentration degraded from 910 to 11 mg L−1. The experiment results indicated that “Ultrasound/Fenton oxidation – MAP chemical precipitation” method was an effective and economic method to treat old landfill leachate.

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来源期刊

Chemical Speciation and Bioavailability 环境科学-毒理学

CiteScore

1.62

自引率

0.00%

发文量

审稿时长

1 months

期刊介绍： Chemical Speciation & Bioavailability ( CS&B) is a scholarly, peer-reviewed forum for insights on the chemical aspects of occurrence, distribution, transport, transformation, transfer, fate, and effects of substances in the environment and biota, and their impacts on the uptake of the substances by living organisms. Substances of interests include both beneficial and toxic ones, especially nutrients, heavy metals, persistent organic pollutants, and emerging contaminants, such as engineered nanomaterials, as well as pharmaceuticals and personal-care products as pollutants. It is the aim of this Journal to develop an international community of experienced colleagues to promote the research, discussion, review, and spread of information on chemical speciation and bioavailability, which is a topic of interest to researchers in many disciplines, including environmental, chemical, biological, food, medical, toxicology, and health sciences. Key themes in the scope of the Journal include, but are not limited to, the following “6Ms”: Methods for speciation analysis and the evaluation of bioavailability, especially the development, validation, and application of novel methods and techniques. Media that sustain the processes of release, distribution, transformation, and transfer of chemical speciation; of particular interest are emerging contaminants, such as engineered nanomaterials, pharmaceuticals, and personal-care products. Mobility of substance species in environment and biota, either spatially or temporally. Matters that influence the chemical speciation and bioavailability, mainly environmentally relevant conditions. Mechanisms that govern the transport, transformation, transfer, and fate of chemical speciation in the environment, and the biouptake of substances. Models for the simulation of chemical speciation and bioavailability, and for the prediction of toxicity. Chemical Speciation & Bioavailability is a fully open access journal. This means all submitted articles will, if accepted, be available for anyone to read, anywhere, at any time. immediately on publication. There are no charges for submission to this journal.