Impact of Influent Composition and Operating Conditions on Carbon and Nitrogen Removal from Urban Wastewater in a Continuous-Upflow (Micro)Aerobic Granular Sludge Blanket Reactor

被引：2

作者：

Lanzetta, Anna ^{[1
]}

Di Capua, Francesco ^{[2
]}

Panneerselvam, Balamurugan ^{[3
]}

Mattioli, Davide ^{[4
]}

Esposito, Giovanni ^{[1
]}

Papirio, Stefano ^{[1
]}

机构：

[1] Univ Naples Federico II, Dept Civil Architectural & Environm Engn, Via Claudio 21, I-80125 Naples, Italy

[2] Univ Basilicata, Sch Engn, Via Ateneo Lucano 10, I-85100 Potenza, Italy

[3] Saveetha Med Coll, SIMATS, Dept Community Med, Chennai 602105, India

[4] Italian Natl Agcy New Technol Energy & Sustainable, Lab Technol Efficient Use & Management Water & Was, Via MM Sole 4, I-40129 Bologna, Italy

来源：

ENERGIES | 2023年 / 16卷 / 17期

关键词：

aerobic granular sludge; urban wastewater; carbon and nitrogen removal; simultaneous nitrification and denitrification; microaerobic conditions; energy saving; SIMULTANEOUS NITRIFICATION; PHOSPHORUS REMOVAL; ENDOGENOUS DENITRIFICATION; MICROBIAL COMMUNITY; AEROBIC GRANULATION; BIOFILM; SULFATE; SND; PH;

D O I：

10.3390/en16176303

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Aerobic granular sludge is an interesting alternative to the conventional activated sludge (CAS) system and modified-Ludzack-Ettinger (MLE) process for biological wastewater treatment, as it allows a more cost-effective and simultaneous removal of carbon (C) and nitrogen (N) compounds in a single stage. In this study, (micro)aerobic C and N removal from synthetic urban wastewater was investigated in a continuous-double-column-upflow aerobic granular sludge blanket (UAGSB) system. The UAGSB reactor was operated under different dissolved oxygen (DO) ranges (0.01-6.00 mg & BULL;L-1), feed C/N ratios (4.7-13.6), and hydraulic retention times (HRTs) (6-24 h). At a DO range of 0.01-0.30 mg & BULL;L-1, feed C/N ratio of 13.6, and HRT of 24 h, the UAGSB achieved the highest chemical oxygen demand (COD), N-NH4+, and total inorganic nitrogen (TIN) removal efficiencies of 86, 99, and 84%, respectively. A preliminary assessment of the energy and economic savings associated with the process investigated was also carried out. The impact of capital and operating costs mainly related to the energy consumption of the aeration was taken into account. The assessment reveals that the capital and energy expenses of the UAGSB reactor would result in cost savings of around 14 and 7%, respectively, compared with a MLE system.

引用

页数：15

共 56 条

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