上海市某生活垃圾中转站污染特征

通过对上海市某生活垃圾中转压缩站产生的污水以及恶臭气体进行为期1年的监测和分析,研究了其污染产生的状况和变化规律。结果表明:中转站产生的垃圾压滤污水呈弱酸性,pH变化范围为5.2～6.5,污水中主要污染物SS、BOD5、CODCr、氨氮和总磷的浓度范围分别为2.00～218.21 g/L、5.50～35.20 g/L、12.06～70.60 g/L、141～909.5mg/L和31～204 mg/L,中转站压滤污水中污染物浓度大体呈现夏秋季节高而冬春季节低的特征。中转站内气体污染物中H2S、NH3气体浓度范围分别为0.005～0.20 mg/m3和0.59～2.205 mg/m3。挥发性有机物VOCs中1,2-二氯乙烷、苯、甲苯、乙酸乙酯、间二甲苯等污染物在10-1～103μg/m3之间变化。中转站污染指标和环境因素的相关分析及PCA结果表明,温度与压滤污水主要水质指标和臭气浓度气体指标存在着相关性,而H2S、NH3气体污染物与水质相关性较小。

Environmental Pollution of A Municipal Solid Waste Transfer Station in Shanghai

There are secondary pollutions, process of municipal solid waste （MSW）. such as wastewater and odor produced The wastewater and odor generated by during the transport and compression the typical transfer stations （TSs） of Shanghai were monitored in a year. The experimental results demonstrated that pH of sewage ranged from 5.2 to 6.5. The concentration range of the major pollutants, such as SS, BODs, CODcr, ammonia nitrogen and phosphorus were 2.00 - 218.21 g/L,5.50 - 35.20 g/L, 12.06 - 70.60 g/L, 141 - 909.5 mg/L and 31 - 204 mg/L respectively. Concentrations of wastewater of refuse pressured in transfer station were higher in summer and autumn, but lower in winter and spring, changed by seasons. The odor pollutants, such as H2S and NH3 ranged from 0. 005 - 0.20 mg/m3 and 0.59 - 2. 205 mg/m3 respectively, the VOCs pollutants, such as 1, 2-dichloroethane, benzene, toluene, ethyl acetate, meta-xylene were among 10-1 - 10^3μg/m3. The results of principal component analysis （PCA） showed that there was some degree of correlation between temperature with the effluent index and odor index, while less relation between air pollutants H2S and NH3 with effluent index .