Submerged anaerobic membrane bioreactor applied for mainstream municipal wastewater treatment at a low temperature: Sludge yield, energy balance and membrane filtration behaviors
Submerged anaerobic membrane bioreactor applied for mainstream municipal wastewater treatment at a low temperature: Sludge yield, energy balance and membrane filtration behaviors
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浸没式厌氧膜生物反应器应用于主流城市污水低温处理：产泥量、能量平衡和膜过滤行为
DOI：
10.1016/j.jclepro.2022.131831
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发表时间：
2022
影响因子：
11.1
通讯作者：
Li Yu-You
中科院分区：
文献类型：
--
作者：
Ji Jiayuan;Du Runda;Ni Jialing;Chen Yujie;Hu Yisong;Qin Yu;Hojo Toshimasa;Li Yu-You
厌氧膜生物反应器（AnMBR）作为一种具有能源生产效益的低成本污水处理工艺具有潜力。然而，为了确保令人满意的处理性能，目前AnMBR在相对较高的温度下运行。低温下AnMBR的运行研究具有重要意义，因为加热所需的能量是阻碍AnMBR应用于城市污水处理的一个障碍。因此,在这项研究中,一个常数低温(15°C) AnMBR是评估治疗真正的城市污水与液压保留时间(荷尔蒙替代疗法)6日到24日的h。在长期的实验,化学需氧量(COD)去除效率获得了大约90.5%的污泥产量低于0.13 g-VSS / g-CODremat荷尔蒙替代疗法的16和24 h。生成的能量从理论上计算是基于沼气生产、高为0.62千瓦时/ t。能量平衡分析表明，在所研究的最佳操作条件下，AnMBR过程的能量为正。膜过滤在15°C下运行时表现良好，HRT范围在12至24小时之间，而在极短的HRT（6小时）下则受到影响。在本研究中，优化条件对低温下AnMBR运行性能的有效性得到了证实，以及在这些条件下能量可回收性的潜力。
The anaerobic membrane bioreactor (AnMBR) has potential as a low-cost wastewater treatment process with the benefit of energy production. However, to ensure satisfactory treatment performance, an AnMBR is operated at a relatively high temperature currently. Research focused on the operation of the AnMBR at low temperature is significant since the energy required for heating is an impediment to the application of AnMBRs for municipal wastewater treatment. Hence, in this study, a constant low-temperature (15 °C) AnMBR was evaluated for the treatment of real municipal wastewater with hydraulic retention times (HRTs) in the range of 6–24 h. During the long-term experiment, a chemical oxygen demand (COD) removal efficiency of approximately 90.5% was obtained with a sludge yield below 0.13 g-VSS/g-CODremat HRTs of 16 and 24 h. The amount of energy generated was theoretically calculated based on biogas production, with a high of 0.62 kWh/t. The energy balance analysis showed that the AnMBR process can be energy positive under the optimal operational conditions investigated. Membrane filtration performed well during operation at 15 °C with HRTs ranging between 12 and 24 h, while it was compromised at the extremely short HRT of 6 h. In this study, the effectiveness of optimizing the conditions on the performance of the AnMBR operating at low temperature was confirmed, along with the potential for energy recoverability under those conditions.