通过食物垃圾微胶囊化处理提高下水道低损耗运输：双重抑制有机浸出和生物膜结构-减轻有害气体和堵塞风险的功能

IF 11.4 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Water Research Pub Date : 2025-04-29 DOI:10.1016/j.watres.2025.123749

Zigeng Zhang , Bo Liu , Wentao Chen , Duoduo Liu , Linjun Li , Yujie Ren , Wenjie Wang , Honglin Yuan , Heliang Pang , Zhiqiang Zhang , Bangyou Liao , Jinsuo Lu

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引用次数: 0

摘要

食物垃圾管理是全球可持续发展面临的重大挑战，具有重大的环境、经济和社会影响。安装食物垃圾处理器成为将食物垃圾通过市政管道转移到废水处理系统的主要策略。然而，这种方法加速了下水道系统向生物反应器的转变，并导致了下水道管道的恶化。为此，我们开发并优化了一种新的微胶囊化方法，用于快速固定化食物垃圾颗粒。研究人员对fw封装微胶囊的稳定性进行了评估，因为它们具有抑制有机浸出、破坏功能性生物膜结构稳定、减少污水输送过程中有害气体排放和管道堵塞的能力。结果表明，负载fw的微胶囊在管道运输过程中具有抗水动力剪切和微生物降解的物理化学稳定性。基于COD抑制33.62 mg/L的有机物释放，减少荧光物质积累/降解，限制大分子有机物泄漏。微胶囊化通过EPS减少、破坏腐殖酸稳定、改变微生物优势、诱导蛋白质构象松动、损害生物膜弹性等方式破坏下水道生物膜的完整性。该技术通过控制3078.3 ppm的VOC来降低下水道风险。与破碎的FW排放增量（2.55 mg/L和0.09 mg/L）相比，它可以消除100%和98.80%的CH4和CO增量，抑制0.80 mg/L硫化物转化增量，并通过粒度和悬浮物控制最大限度地减少沉淀。与食物垃圾处理器的集成增强了源隔离有机收集，优化了水运以减轻管道劣化，减少了0.915 mtco2当量的运输相关碳排放，提高了污水处理厂的处理效率。这种微胶囊化策略为FW管理提供了可持续的解决方案，结合了基础设施保护、排放控制和资源回收。

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Enhancing sewer low-loss transportation by food waste microencapsulation treatment: Dual suppression of organic leaching and biofilm architecture-function for mitigating hazardous gases and blockage risks

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Food waste management posed a critical global sustainability challenge, with significant environmental, economic, and social impacts. The installation of food waste disposers emerged as a primary strategy for source-separated food waste transfer to wastewater treatment systems through municipal pipelines. However, this approach accelerated the transformation of sewer systems into bioreactors and induced sewer pipe deterioration. Therefore, a novel microencapsulation method was developed and optimized to rapidly immobilize comminuted food waste particles. The stability of FW-encapsulated microcapsules was evaluated for their capacity to suppress organic leaching, destabilize functional biofilm architectures, and mitigate hazardous gas emissions and pipeline blockages in sewer systems during sewage conveyance. Results showed that FW-loaded microcapsules exhibited physicochemical stability against hydrodynamic shear and microbial degradation during sewer transport. It suppressed 33.62 mg/L organic matter release based on COD, reduced fluorescent substance accumulation/degradation, and limited macromolecular organics leakage. Microencapsulation destabilized sewer biofilm integrity via EPS reduction, disrupted humic acid stabilization, altered microbial dominance, and induced protein conformational loosening, impairing biofilm resilience. The technology mitigated sewer risks by curbing 3078.3 ppm VOC. It eliminating 100 % and 98.80 % increments of CH₄ and CO compared to crushed FW discharge increments(2.55 mg/L and 0.09 mg/L), suppressing 0.80 mg/L sulfide conversion increments, and minimizing sedimentation through particle size and suspended solids control. Integration with food waste disposers enhanced source-segregated organic collection, optimized hydro-transport to alleviate pipe deterioration, reduced 0.915 MtCO₂-eq transport-related carbon emissions, and improved treatment efficiency of wastewater treatment plants. This microencapsulation strategy provided a sustainable solution for FW management, combining infrastructure preservation, emission control, and resource recovery.

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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.