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在高固体无氧膜生物反应器系统处理的MSW液中,化学和生物驱动的碳转化流

Zhiyue Wu¹, Wei Qiao¹, Yu-You Li²

¹College of Engineering, China Agricultural University, China; Sanya Institute of China Agricultural University, Sanya, Hainan Province, 572025, China.

|June 1, 2023

概括

研究无氧膜生物反应器 (AnMBR) 中的碳转化显示,由于碳酸沉和溶解的甲和碳酸,碳的损失很大. 这影响了生物气生产和整体工艺效率.

科学领域:

环境工程环境工程
生物技术是生物技术.
化学工程是化学工程的重要组成部分.

背景情况:

碳转化对于厌氧过程至关重要,但在厌氧膜生物反应器 (AnMBR) 中经常被忽视.
了解AnMBR中的物料流对于优化城市固体废物 (MSW) 水等基板的处理至关重要.
富含的环境为无氧消化过程中的碳管理带来了独特的挑战和机会.

研究的目的:

量化研究AnMBR处理富的MSW液中的碳转化.
阐明化学和生物因素对AnMBR系统内的碳流的影响.
为AnMBRs开发一个碳转化模型.

主要方法:

在AnMBR系统中对材料流量的定量分析.
化学分析以确定碳物种和降水量.
开发和应用碳转化模型.

主要成果:

发生了显著的碳降解,理论上甲 (CH4) 和二氧化碳 (CO2) 的产量分别为50.1%和37.7%.
实验结果显示,CH4 (40.6%) 和CO2 (14.2%) 的转化率较低.
观察到碳酸沉捕获了1.23g/天的碳,并溶解了HCO3- (23.2g/L) 和CH4 (16.6 mg/L).
这些因素有助于生物气中CH4含量高 (74%).
一个碳转化模型说明了碳在气体,液体和固体相之间的分布.

结论:

碳酸沉和溶解碳物种显著影响处理MSW水的AnMBR中的碳转化.
已建立的模型准确地表示了碳流,有助于过程优化.
对管理这些因素的进一步研究可以提高AnMBR生物气生产和废物处理的效率.

关键词:

无氧消化消化无氧消化无氧膜生物反应器是一种无氧膜生物反应器.碳物质流是碳的物质流.化学沉化学沉是一种化学沉.在MSW中漏.

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