Characteristics of Emitted Odor and Discharged Condensate Water of Sludge Thermal Drying Project in Shenzhen Nanshan Thermal Power Plant

Abstract:

During thermal drying of dewatered sludge, odor will be produced, and also plenty of condensate water. Currently, there is little research about odor gas and condensate water produced during thermal drying of dewatered sludge. To supply engineering design basis for treatment scheme of odor and condensate water produced during thermal drying of dewatered sludge, it analyzes pollutants concentration of odor and condensate water produced in Sludge Drying Project in Shenzhen Nanshan Thermal Power Plant, and it verifies removal performance of chemical odor removal system of the Project. It is concluded that during thermal drying of dewatered sludge, odor will be produced, which components are mainly ammonia gas, H₂S, CS₂, CH₃SH and dimethylsulfide, etc.. It is found that organic components in condensate water is high, BOD/COD is about 0.2, NH₃-N and TN is high, C/N is about 8, and TP is low.

• Periodical: Advanced Materials Research (Volume 777)
• Pages: 127-132
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.777.127
• Online since: September 2013
• Authors: Yong Wang, Fen Wang, Min Ji
• Keywords: Condensate Water, Odor Gas, Sludge Thermal Drying

References

[1] Deng W Y, Yan J H , Wang F, et al. Emission characteristics of volatile compounds during sludge drying process[J]. Journal of Hazardous Materials, 2009, 15(1): 186-192.

[2] Ministry of Environmental Protection, The People's Republic of China, Air and Exhausted Gas Monitoring and Analysis Methods[M], 4th edition, 2003, China Environmental Science Press.

[3] Air quality-StyreneMonitoring-Gas chromatographic method [S], GB/T 14670-1993, Standards Press of China.

[4] Air quality-Determination of odor-Triangle odor bag method[S], GB/T 14675-1993, Standards Press of China.

[5] Air quality-Monitoring of methyl disulfide, methanthiol and dimethyl sulfide, Gas chromatographic method[S], GB/T14678-1993, Standards Press of China.

[6] Air quality-Determination of carbon disulfide-Diethylaminespectrophometric method[S], GB/T14680-1993, Standards Press of China.

[7] Air quality-Trimethylamine-N-oxide monitoring-Gas chromatographic method[S], GB/T 14676-93, Standards Press of China.

[8] WengHuanxin, New Technology of Sludge Harmless, Reduction and Resource Utilization[M], Beijing Science Press, (2009).

[9] Ministry of Environmental Protection, The People's Republic of China, Water and Wastewater Monitoring and Analysis Methods [M], 4th Edition, 2002, China Environmental Science Press.

[10] Shanableh A, Jomaa S. Production and transformation of volatile fatty acids from sludge subjected to hydrothermal treatment L T7 [J]. Water Science Technology, 2001, 44(10): 129-135.

DOI: 10.2166/wst.2001.0600