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Enhanced nitrogen and phosphorus removal by an advanced simultaneous sludge reduction, inorganic solids separation, phosphorus recovery, and enhanced nutrient removal wastewater treatment process
Yan, Peng1,2; Guo, Jin-Song1,2; Wang, Jing3; Chen, You-Peng1,2; Ji, Fang-Ying4; Dong, Yang1,2; Zhang, Hong1,2; Ouyang, Wen-juan1,2
2015-05-01
摘要An advanced wastewater treatment process (SIPER) was developed to simultaneously decrease sludge production, prevent the accumulation of inorganic solids, recover phosphorus, and enhance nutrient removal. The feasibility of simultaneous enhanced nutrient removal along with sludge reduction as well as the potential for enhanced nutrient removal via this process were further evaluated. The results showed that the denitrification potential of the supernatant of alkaline-treated sludge was higher than that of the influent. The system COD and VFA were increased by 23.0% and 68.2%, respectively, after the return of alkaline-treated sludge as an internal C-source, and the internal C-source contributed 24.1% of the total C-source. A total of 74.5% of phosphorus from wastewater was recovered as a usable chemical crystalline product. The nitrogen and phosphorus removal were improved by 19.6% and 23.6%, respectively, after incorporation of the side-stream system. Sludge minimization and excellent nutrient removal were successfully coupled in the SIPER process. (C) 2015 Elsevier Ltd. All rights reserved.
关键词Enhanced nutrient removal Sludge reduction Chemical phosphorus recovery Internal carbon source Alkaline-treated sludge
DOI10.1016/j.biortech.2015.02.070
发表期刊BIORESOURCE TECHNOLOGY
ISSN0960-8524
卷号183页码:181-187
通讯作者Yan, P (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China.
收录类别SCI
WOS记录号WOS:000351102700023
语种英语