Mass Balances of Biological Nutrient Removal with Extended Sludge Retention Time

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ฉัตรลดา เพียซ้าย
นิตยา บุณเทียน
ธันย์ชนก พรดอน
Mohamad Padri

Abstract

This study aims to study the mass balance of chemical oxygen demand (COD), nitrogen (N) and phosphorus (P) in enhanced biological phosphorus removal (EBPR) bioreactor. This study consists of anaerobic-anoxic-aerobic conditions. Acetic acid was used as a carbon source for synthetic wastewater through 60 days of solid retention time (SRT). The rates of TCOD, TN and TP in aerobic condition were 19.60, 1.06 and 1.34 g/d, respectively. They were reduced to be 1.12, 3.52 x 10-2 and 0.41 g/d, respectively, in the effluent. The concentrations of TCOD, TN and TP in effluent were 0.21±0.73, 0.07±0.00 and 8.35±2.34 mg/L. Generally, the EBPR resulted TCOD, TN and TP removal as much as 99.97±0.13, 99.49±0.09 and 61.95.48 %, respectively. Using 60 days of SRT, the efficiency of phosphorus removal can be more than 60 %. The Mass balance can be used as a guideline for controlling the EBPR system and it is possible to apply in municipal wastewater treatment systems.

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Section
วิศวกรรมศาสตร์และสถาปัตยกรรมศาสตร์
Author Biographies

ฉัตรลดา เพียซ้าย

สาขาวิชาวิศวกรรมสิ่งแวดล้อม มหาวิทยาลัยเทคโนโลยีสุรนารี ตำบลสุรนารี อำเภอเมือง จังหวัดนครราชสีมา 30000

นิตยา บุณเทียน

สาขาวิชาวิศวกรรมสิ่งแวดล้อม มหาวิทยาลัยเทคโนโลยีสุรนารี ตำบลสุรนารี อำเภอเมือง จังหวัดนครราชสีมา 30000

ธันย์ชนก พรดอน

สาขาวิชาวิศวกรรมสิ่งแวดล้อม มหาวิทยาลัยเทคโนโลยีสุรนารี ตำบลสุรนารี อำเภอเมือง จังหวัดนครราชสีมา 30000

Mohamad Padri

สาขาวิชาวิศวกรรมสิ่งแวดล้อม มหาวิทยาลัยเทคโนโลยีสุรนารี ตำบลสุรนารี อำเภอเมือง จังหวัดนครราชสีมา 30000

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