The upgrading of conventional activated sludge processes with thermophilic aerobic membrane reactor: Alternative solutions for sludge reduction.,Journal of Environmental Management

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The upgrading of conventional activated sludge processes with thermophilic aerobic membrane reactor: Alternative solutions for sludge reduction.
Journal of Environmental Management ( IF 8.0 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.jenvman.2020.110490
Maria Cristina Collivignarelli ₁ , Alessandro Abbà ₂ , Giorgio Bertanza ₂ , Andrea Frattarola ₁

Affiliation

Sludge recovery/disposal represents one of the most crucial aspects related to the management of wastewater treatment plants. The most widely diffused technology for the treatment of industrial and municipal wastewaters is the conventional activated sludge (CAS) process, which is characterized by a relatively high excess sludge production. Different technical solutions are proposed in the literature for sludge minimization and they can be applied either on wastewater line (WL) or sludge line (SL). This work is focused on different approaches based on the use of Thermophilic Aerobic Membrane Reactor (TAMR): this can be added to a CAS plant, and integrated to WL or SL, yielding a significant sludge reduction. The process performance was analysed in terms of volatile solids (VS) reduction and specific sludge production. The TAMR was tested both at full-scale and pilot-scale with different feeding substrates: industrial wastewater for the full-scale plant; industrial wastewater, sludge and a mix of these for the pilot-scale plants. The results obtained are: (i) good solids removal (38-90% and 40-50% in terms of VS for sludge and mix of industrial wastewater and sludge, respectively), (ii) low specific sludge production (0.01-0.09 kgVSS produced kgCOD removed-1 for industrial wastewater and 0.014-0.069 kgVSS produced kgCOD removed-1 for mix of industrial wastewater and sludge) and (iii) a significant reduction of sludge when CAS is improved with the TAMR technology.

中文翻译：

高温好氧膜反应器对传统活性污泥工艺的升级：减少污泥的替代解决方案。

污泥的回收/处置是与废水处理厂管理相关的最关键方面之一。用于处理工业和市政废水的最广泛扩散的技术是传统的活性污泥（CAS）工艺，其特点是相对较高的过量污泥产量。文献中提出了不同的技术方案来最小化污泥，它们可以应用于废水管线（WL）或污泥管线（SL）。这项工作的重点是基于使用嗜热好氧膜反应器（TAMR）的不同方法：可以将其添加到CAS工厂中，并集成到WL或SL中，从而显着减少污泥。根据挥发性固体（VS）的减少和特定污泥的产生来分析工艺性能。用不同的进料底物对TAMR进行了全面和中试测试：大型工厂的工业废水；工业废水，污泥及其混合物，用于中试规模的工厂。获得的结果是：（i）良好的固体去除率（对于污泥以及工业废水和污泥的混合物，VS分别为38-90％和40-50％），（ii）低比污泥产量（0.01-0.09 kgVSS）生产的用于工业废水的kgCOD去除-1和0.014-0.069 kg的VSS用于工业废水和污泥的混合物的生产的kgCOD去除-1）（iii）当通过TAMR技术改进CAS时，污泥显着减少。

更新日期：2020-04-01

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