Transformation and utilization of slowly biodegradable organic matters in biological sewage treatmwnt of anaerobic anoxic oxic systems
发布时间：2024-08-09
点击次数：
- 所属单位：
- 环境与市政工程学院
- 发表刊物：
- Bioresource Technology
- 关键字：
- 中文关键字：慢速可生物降解有机物；碳源；AAO；溶解性有机物，英文关键字：Slowly biodegradable organic matters(SBOM);Carbon
- 摘要：
- This study examined the distribution of carbon sources in two anaerobic anoxic oxic (AAO) sewage treatment plants in Xi’an and investigated the transformation characteristics and utilization potential of slowly biodegradable organic matters (SBOM). Results indicated under anaerobic and aerobic conditions, SBOM could be transformed at a rate of 65% in 8 h into more readily biologically utilizable substrates such as volatile fatty acids (VFAs), polysaccharides and proteins. Additionally, non-biodegradable humus-type substances which are difficult to biodegrade and readily accumulate, were also generated. These products could be further hydrolyzed to aldehyde and ketone compounds and then transformed into substances with significant oxygen-containing functional groups and utilized subsequently. The molecular weights of proteinoid substances had a wide distribution and tended to decrease over time. Long hours of microbial reaction increased the proportion of micromolecular substances. This particular increase generated significant bioavailability, which can greatly improve the efficiency of nitrogen removal.
- 备注：
- 张琼华
- 合写作者：
- 杨温娜,杨磊,吴友豪,石煊,郭文珊,王旭,马乌里
- 第一作者：
- 王晓昌,杨生炯,金鹏康,张琼华
- 论文类型：
- 期刊论文
- 卷号：
- 卷：218
- 期号：
- 期：
- 页面范围：
- 页：53-61
- 是否译文：
- 否
- 发表时间：
- 2016-06-01