Comparison of Municipal and Coke Wastewater Sludges in Disintegration and Acidogenesis by Microwave
SCIE
SCOPUS
- Title
- Comparison of Municipal and Coke Wastewater Sludges in Disintegration and Acidogenesis by Microwave
- Authors
- Ahn, JH; Shin, SG; Park, BC; Hwang, S
- Date Issued
- 2011-08
- Publisher
- ASCE-AMER SOC CIVIL ENGINEERS
- Abstract
- This work experimentally determined the effect of microwave treatment on the disintegration and acidogenesis of waste-activated sludges (WAS) from municipal and coke wastewater treatment plants. Sludge samples (500 g) were heated for 0, 3, 5, 7, 9, 11, and 15 min in a microwave oven (2,450 MHz, 700 W). The degree of sludge solubilization [soluble chemical oxygen demand (SCOD)/COD] increased asymptotically with microwave irradiation time from 1.5% at 0 min to 22.3% at 15 min for WAS from a municipal wastewater treatment plant (WAS(M)) and 1.5% to 5.1% for WAS from a coke wastewater treatment plant of a steel manufacturing industry (WAS(C)). The calcium concentrations in both sludges also increased with microwave irradiation time. The biochemical acidogenic potentials (BAP) increased from 3.70 to 4: 44 gCODL(-1) for WAS(M) and 1.19 to 1.67 gCODL(-1) for WAS(C). The results show that microwave irradiation increases the solubilization and BAP of sludges and that WAS(M) had a higher degree of solubilization and BAP than WAS(C). DOI: 10.1061/(ASCE)EE.1943-7870.0000379. (C) 2011 American Society of Civil Engineers.
- Keywords
- Anaerobic treatment; Bioenergy; Microwaves; Sludge; ACTIVATED-SLUDGE; ANAEROBIC-DIGESTION; ACID PRODUCTION; PRETREATMENT; DESTRUCTION; IRRADIATION; PERFORMANCE; SECONDARY; BACTERIA
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/17126
- DOI
- 10.1061/(ASCE)EE.1943-7870.0000379
- ISSN
- 0733-9372
- Article Type
- Article
- Citation
- JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE, vol. 137, no. 8, page. 740 - 745, 2011-08
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