稻壳生物炭附着生物膜与微生物对消化猪废水脱氮的影响

IF 1.3 4区农林科学 Q2 MATERIALS SCIENCE, PAPER & WOOD

Bioresources Pub Date : 2024-07-21 DOI:10.15376/biores.19.3.6264-6280

Fanghui Pan, Fei Huang, Youbao Wang, Hongguang Zhu

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引用次数: 0

摘要

目前，很难通过序批式反应器（SBR）中的活性污泥法直接降解消化猪废水中的氮，导致出水无法达到排放标准。本研究选择在 SBR 中添加稻壳生物炭，以提高消化猪废水的生化性能，尤其是氮降解性能。通过高通量测序技术探究了微生物群落的相对脱氮机制。结果表明，在进水 COD 为 2609 mg-L-1、NH4+-N 为 337.0 mg-L-1、TN 为 344 mg/L 和 C/N 为 7.77 的条件下，稻壳生物炭与生物膜对消化猪废水的化学需氧量（COD）、氨氮（NH4+-N）和总氮（TN）的去除率分别为 85.3%、81.3% 和 65.2%，分别比活性污泥高 3.5%、24.4% 和 14.7%。高通量测序发现，带有生物膜的稻壳生物炭含有变形菌、Thauera、Comamonas、Acinetobacter、Pseudomonas、Flavobacterium 和 Corynebacterium，可提高消化猪废水的脱氮效果。研究结果不仅为生物炭与生物膜改善消化猪场废水处理提供了理论支持，而且对农业废弃物资源化利用和生态环境保护具有重要意义。

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Effects of rice husk biochar attachment biofilm with microorganisms on nitrogen removal of digested swine wastewater

Nitrogen in digested swine wastewater is currently difficult to directly degrade by an activated sludge process in a sequencing batch reactor (SBR), with resulting failure of the effluent to meet emission standards. In this study, rice husk biochar was optionally added into SBR to enhance biochemical properties for digested swine wastewater, especially for nitrogen degradation. The relative nitrogen removal mechanism for microbial community was probed by means of high-throughput sequencing. The results indicated that chemical oxygen demand (COD), ammonia (NH4+-N), and total nitrogen (TN) removal efficiency of digested swine wastewater was separately at 85.3%, 81.3%, and 65.2% using rice husk biochar with biofilm, which was 3.5%, 24.4%, and 14.7% higher than that of activated sludge, under influent of 2609 mg·L-1 COD, 337.0 mg·L-1 NH4+-N, 344 mg/L TN, and 7.77 C/N. High-throughput sequencing revealed that rice husk biochar with biofilm contained Proteobacteria, Thauera, Comamonas, Acinetobacter, Pseudomonas, Flavobacterium, and Corynebacterium to enhance nitrogen removal of digested swine wastewater. The results not only provide theoretical support for biochar with biofilm to improve digested piggery wastewater treatment, but also have great significance in resource utilization of agricultural waste and eco-environmental protection.

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来源期刊

Bioresources 工程技术-材料科学：纸与木材

CiteScore

2.90

自引率

13.30%

发文量

397

审稿时长

2.3 months

期刊介绍： The purpose of BioResources is to promote scientific discourse and to foster scientific developments related to sustainable manufacture involving lignocellulosic or woody biomass resources, including wood and agricultural residues. BioResources will focus on advances in science and technology. Emphasis will be placed on bioproducts, bioenergy, papermaking technology, wood products, new manufacturing materials, composite structures, and chemicals derived from lignocellulosic biomass.