太阳能光芬顿法去除废水中新兴关注污染物的中性或酸性 pH 值？连续式环流池塘反应器的技术经济评估。
Neutral or acidic pH for the removal of contaminants of emerging concern in wastewater by solar photo-Fenton? A techno-economic assessment of continuous raceway pond reactors.
机构信息
Solar Energy Research Centre (CIESOL), Joint Centre University of Almeria-CIEMAT, Carretera de Sacramento s/n, 04120 Almeria, Spain; Department of Chemical Engineering, University of Almería, Spain.
Solar Energy Research Centre (CIESOL), Joint Centre University of Almeria-CIEMAT, Carretera de Sacramento s/n, 04120 Almeria, Spain; Department of Chemical Engineering, University of Almería, Spain.
出版信息
Sci Total Environ. 2020 Sep 20;736:139681. doi: 10.1016/j.scitotenv.2020.139681. Epub 2020 May 25.
As far as the authors know, no in-depth comparison has been made between the different performances of the solar photo-Fenton process for the removal of contaminants of emerging concern (CECs) as a function of pH. To this end, real WWTP secondary effluents were treated in continuous flow mode at pilot plant scale. The effect of hydraulic residence time (HRT), liquid depth and percentage of CEC removal on treatment capacity was studied. At acidic pH (2.8), the iron source was FeSO and at neutral pH (7.0), it was Fe(III)-EDDS. At both pH values, 2250 L m d can be treated in 15-cm deep raceway pond reactors at 30 min HRT with 0.1 mM iron and 0.88 mM HO in order to achieve 80% CEC removal. Treatment costs were 0.25 € m and 0.56 € m at acidic and neutral pH, respectively. This study paves the way for the solar photo-Fenton process to be employed on a commercial scale.
据作者所知，目前尚未深入比较过不同 pH 值条件下，太阳能光芬顿工艺对新兴污染物（CECs）去除性能的差异。为此，本研究在中试规模的连续流模式下处理实际 WWTP 二级出水。考察了水力停留时间（HRT）、液体深度和 CEC 去除率对处理能力的影响。在酸性 pH（2.8）条件下，铁源为 FeSO₄；在中性 pH（7.0）条件下，铁源为 Fe（III）-EDDS。在这两种 pH 值条件下，采用 15-cm 深的渠道池塘反应器，在 30 分钟 HRT 条件下，以 0.1mM 铁和 0.88mM HO 处理，可实现 80%CEC 去除率，2250L/md 的处理量。酸性和中性 pH 条件下的处理成本分别为 0.25 欧元/m 和 0.56 欧元/m。本研究为太阳能光芬顿工艺的商业化应用铺平了道路。
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