New approaches are of crucial importance to evaluate and minimize the odorous impact in the management of organic waste. The objective of this study is to develop an odor map to identify the highest critical odor points in an urban waste treatment plant from the physico-chemical, respirometric and olfactometric variables evaluated in different emission sources. Fresh organic waste such as sewage sludge (SL) and organic fraction of municipal solid waste (OFMSW) were found to be the most influential odorous substrates (14.57 and 2.41 ou_E/s·m², respectively), due to their high concentration in biodegradable organic matter. Compost derived from both fresh organic materials (C-SL and C-OFMSW) were the least influential substrates in terms of odor emission (≤0.1 ou_E/s·m²) as a consequence of their stabilization. Inorganic waste (IW) showed an odor potential as high as 2.10 ou_E/s·m², similar to OFMSW, due to the organic material adhered to IW surface emits high amount of unpleasant odors. Leachate lagoons (LIX) were classified as middle critical emission points (0.7 ou_E/s·m²), because of the high mineralization of nitrogen in the form of ammonical nitrogen. Moreover, the emission sources were clearly grouped according to their physico-chemical and respirometric characteristics by principal component analysis (PCA) and a value as high as 67.3% of the total variance was explained. Finally, odor emission was predicted from the physico-chemical and respirometric variables by multivariate regression, with respirometric variables (OD₂₀ and SOUR), total Kjeldahl nitrogen (TKN), ammoniacal nitrogen (N-NH₄⁺) and the residence time (t) being the most influential variables on the prediction correlation (r = 0.9768). SL and OFMSW contributed 60% and 15%, respectively, to the global odor emission derived from the treatment plant, followed by IW (13%) and LIX (11%).

新方法对于评估和减少有机废物管理中的臭味影响至关重要。这项研究的目的是开发一种气味图，以根据在不同排放源中评估的物理化学，呼吸测定法和嗅觉测定变量，识别城市废物处理厂中的最高临界气味点。发现新鲜有机废物（如污水污泥（SL）和城市固体废物的有机部分（OFMSW））是最具影响力的臭味底物（分别为14.57和2.41 ou _E / s·m ²），因为它们在环境中的浓度很高。可生物降解的有机物。就气味排放而言，两种新鲜有机材料（C-SL和C-OFMSW）产生的堆肥是影响最小的基质（≤0.1 ou _E/ s·m ²）。无机废物（IW）显示出高达2.10 ou _E / s·m ^2的潜在气味，类似于OFMSW，这是因为粘附在IW表面的有机材料散发出大量难闻的气味。渗滤液泻湖（LIX）被分类为中等临界排放点（0.7 ou _E / s·m ²），因为铵态氮形式的氮矿化程度高。此外，通过主成分分析（PCA）可以根据排放源的理化和呼吸测定特征对排放源进行清晰分组，并解释了高达67.3％的总方差值。最后，通过多元回归从理化和呼吸测定变量预测气味散发，其中包括呼吸测定变量（OD ₂₀和SOUR），凯氏总氮（TKN），氨氮（N-NH ₄ ⁺），而停留时间（t）是预测相关性中最有影响力的变量（r = 0.9768）。SL和OFMSW分别占处理厂产生的全球气味排放的60％和15％，其次是IW（13％）和LIX（11％）。