Department of Civil Engineering and Architectural Engineering, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy.
Department of Civil Engineering and Architectural Engineering, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy.
Water Res. 2014 Oct 15;63:190-8. doi: 10.1016/j.watres.2014.06.018. Epub 2014 Jun 24.
In the present work we studied the thermophilic biological treatability of high strength liquid wastes from a pharmaceutical industry (rich in organic matter - COD: Chemical Oxygen Demand, nutrients and salinity). Different mixtures (with concentrations of COD, phosphorus and chloride up to 57,000 mg L(-1), 2000 mg L(-1) and 9000 mg L(-1), respectively) were tested. The pilot plant used in this work was designed and built with dimensions comparable to a semi-industrial unit. The results are therefore representative for full-scale applications. During four months of experimentation, the pilot plant (TAMR - Thermophilic Aerobic Membrane Reactor) was operated at 49 ± 1 °C and the organic loading rate was 1.5-5.5 kgCOD m(-3) d(-1) with a hydraulic retention time of 5-10 days. Main results are the following: a) extremely high COD removal rate (up to 98%); b) very low sludge production (∼0.016 kgVSS produced kgCOD removed(-1)); c) suitability as a pre-treatment to a conventional (e.g. activated sludge) biological treatment (the studied pharmaceutical industrial wastewaters are discharged into the sewer system for final polishing in a centralized municipal wastewater treatment plant) and d) high phosphorus removal (up to 99%).
在本工作中，我们研究了来自制药行业（富含有机物 - COD：化学需氧量、营养物质和盐度）的高强度液体废物的嗜热生物处理能力。测试了不同的混合物（COD、磷和氯的浓度分别高达 57000 mg L(-1)、2000 mg L(-1)和 9000 mg L(-1)）。本工作中使用的试验工厂是按照与半工业装置可比的尺寸设计和建造的。因此，结果代表了全规模应用。在四个月的实验过程中，试验工厂（TAMR - 嗜热需氧膜反应器）在 49 ± 1°C 下运行，有机负荷率为 1.5-5.5 kgCOD m(-3) d(-1)，水力停留时间为 5-10 天。主要结果如下：a）极高的 COD 去除率（高达 98%）；b）极低的污泥产量（∼0.016 kgVSS 产生 kgCOD 去除(-1)）；c）适合作为传统（例如活性污泥）生物处理的预处理（研究的制药工业废水排入下水道系统，在集中式城市污水处理厂进行最终抛光）；d）高磷去除率（高达 99%）。
