The Characterization and the Dispersion of Volatile Organic Compounds and Stench in Some Waste Treatmental Plants

• Main Authors: Chin-Yuan Liu, 留金園
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/2uj2hf

碩士 === 逢甲大學 === 環境工程與科學所 === 90 === This thesis is for the purpose to find the emission factors of the air pollutants from variant waste treatmental plants by sampling and analysis. ISCST-3 model was used to calculate the concentration distribution from some waste treatmental plants. While geographic information system was also used to draw the concentration distribution graphs. Ten sewage plants, a landfill, and a temporary waste stack site were chosen for studying. The items of analysis are volatile organic compounds and the stench (NH3、(CH3)3N、CS2、H2S、CH3SH、(CH3)2S and (CH3)2S2). In this study, a trapping technology was used for the sampling. And VOCs and stench were determined by a GC/MS and a GC-FPD. Almost the stench compounds can be found in the air of three chemical sewage plants. The concentrations of NH3 and CS2 in plant A are 599.0 and 267.5 ppb, it’s higher than in plant B and C. The analysis results show that the VOCs composition in each sewage plant is different. The maximum featured VOC amount in plant A, B, and C are 162.5 ppb hexylmethylamine, 887.1 ppb hexachloroethane, and 32.2 ppb stearic acid. In petrochemical sewage plant D and E, the concentrations of NH3 and (CH3)2S in plant D are all much more than in plant E, they are 628.0 and 4.7 ppb. But the concentration of H2S (17.5 ppb) in plant E is higher than in plant D. On the other hand, methyl propyl pentanaol and methyl ethyl ketone have the maximum amount in plant D and E are 81.5 and 14.3 ppb. In paper-mill sewage plant F and G, (CH3)3N and CH3SH are not found, but the concentration of other stench are almost same. The maximum featured VOC amount in plant F and G are 26.2 ppb ethyl methyl pentanol and 13.5 ppb methyl butenol. Almost the stench compounds can be found in the air of two animal farm sewage plants (I and H). The concentrations of NH3, (CH3)2S2, and diisobutyl carbinol in plant I are 445.0, 1.1, and, 30.2 ppb, they are all higher than in plant H. But the amounts of H2S (6.0 ppb) and stearic acid (46.4 ppb) in plant H are great than in plant I. In dye sewage plant J, the concentration of NH3 and H2S are 30.0 and 14.5 ppb, and the amounts of other stench compounds are all lower than 10.0 ppb. Diethyl ether and methyl butanol are 46.7 and 34.9 ppb, they are the featured VOC in plant J. In landfill K and temporary waste stack site L, NH3 (20.7 ppb and 13.0 ppb) have the maximum amounts in them. The summary table of all plants or sites was set up. The concentration distribution graphs show that the concentration decrease progressively very fast. And the concentration of air pollutant is near zero when the distance over 300 m. It means that the main impairment area is a circumference of 300 m.