以生物聚合物和养分回收为驱动的新型负碳侧流MBMBR工艺处理城市污水

IF 12.4 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Water Research Pub Date : 2025-08-08 DOI:10.1016/j.watres.2025.124377

Haifeng Zhang , Yi Zhang , Lin Li , Changqing Liu , Shujuan Huang , Tong Yu , Dong-Hoon Kim , Seoktae Kang , Boyan Xu , Xueqing Shi , How Yong Ng

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引用次数: 0

摘要

随着全球气候变化的快速演变和资源短缺，实现能源和碳中性废水回收的技术创新需求日益增长。本研究采用高速侧流移动床膜生物反应器（MBMBR）工艺，通过COD捕获法回收城市污水中的生物聚合物和营养物。结果表明，MBMBR工艺具有良好的COD捕获能力（有机转化负荷为2.64 g COD/L/d）和较高的氮滞留率（92.7%），水力滞留时间短，为1.0 h。此外，MBMBR工艺回收的藻酸盐样外聚合物的产率在213.0 ~ 272.9 mg/g VSS之间，显著高于常规活性污泥（CAS）（90 ~ 190 mg/g VSS）。此外，还进一步评估了MBMBR工艺的能源需求、净利润和碳排放，并与CAS-MBR工艺进行了比较。MBMBR工艺的能源需求和净利润评估分别为0.510千瓦时/立方米和0.025美元/立方米，而cass - mbr工艺的能源需求和净利润评估分别为0.647千瓦时/立方米和-0.077美元/立方米。结果表明，MBMBR工艺对资源回收的COD捕获可抵消837.45 g CO2e/m3，是CAS-MBR工艺的9.50倍。由于这一显著的碳抵消部分，MBMBR过程的总碳排放量（-234.54 g CO2e/m3）显著低于CAS-MBR过程（900.90 g CO2e/m3）。这表明，基于价值的废水资源转换和回收可能会改变下一代废水处理工艺的设计。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

A novel carbon-negative side-stream MBMBR process for municipal wastewater reclamation driven by biopolymer and nutrient recovery

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A novel carbon-negative side-stream MBMBR process for municipal wastewater reclamation driven by biopolymer and nutrient recovery

With the rapid evolution of global climate change and resource shortages, there is a growing need for technological innovation to achieve energy and carbon-neutral wastewater reclamation. In this study, a high-rate side-stream moving bed membrane bioreactor (MBMBR) process was used for municipal wastewater reclamation via COD capture for biopolymer harvesting and nutrient recovery. The results revealed excellent COD capture ability (organic conversion loading of 2.64 g COD/L/d) and a high nitrogen retention rate (92.7 %) in the MBMBR process, with a short hydraulic retention time of 1.0 h. Moreover, the yields of alginate-like exopolymers recovered from the MBMBR process ranged from 213.0 to 272.9 mg/g VSS, which was significantly higher than the yields from conventional activated sludge (CAS) (90-190 mg/g VSS). Additionally, the energy demands, net profits, and carbon emissions of the MBMBR process were further evaluated for comparison with the CAS-MBR process. The energy demands and net profit evaluations for the MBMBR process were estimated to be 0.510 kWh/m³ and 0.025 USD/m³, respectively, compared to 0.647 kWh/m³ and -0.077 USD/m³ for the CAS-MBR process. Furthermore, it was demonstrated that the COD capture for resource recovery in the MBMBR process could offset approximately 837.45 g CO₂e/m³, which was 9.50 times than that in the CAS-MBR process. With this significant portion of carbon offsetting, the total carbon emissions in the MBMBR process (-234.54 g CO₂e/m³) were significantly lower than in the CAS-MBR process (900.90 g CO₂e/m³). This indicates that value-based resource conversion and recovery from wastewater could be a game-changer in the design of next-generation wastewater treatment processes.

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来源期刊

Water Research 环境科学-工程：环境

CiteScore

20.80

自引率

9.40%

发文量

1307

审稿时长

38 days

期刊介绍： Water Research, along with its open access companion journal Water Research X, serves as a platform for publishing original research papers covering various aspects of the science and technology related to the anthropogenic water cycle, water quality, and its management worldwide. The audience targeted by the journal comprises biologists, chemical engineers, chemists, civil engineers, environmental engineers, limnologists, and microbiologists. The scope of the journal include: •Treatment processes for water and wastewaters (municipal, agricultural, industrial, and on-site treatment), including resource recovery and residuals management; •Urban hydrology including sewer systems, stormwater management, and green infrastructure; •Drinking water treatment and distribution; •Potable and non-potable water reuse; •Sanitation, public health, and risk assessment; •Anaerobic digestion, solid and hazardous waste management, including source characterization and the effects and control of leachates and gaseous emissions; •Contaminants (chemical, microbial, anthropogenic particles such as nanoparticles or microplastics) and related water quality sensing, monitoring, fate, and assessment; •Anthropogenic impacts on inland, tidal, coastal and urban waters, focusing on surface and ground waters, and point and non-point sources of pollution; •Environmental restoration, linked to surface water, groundwater and groundwater remediation; •Analysis of the interfaces between sediments and water, and between water and atmosphere, focusing specifically on anthropogenic impacts; •Mathematical modelling, systems analysis, machine learning, and beneficial use of big data related to the anthropogenic water cycle; •Socio-economic, policy, and regulations studies.