沈阳市污泥堆存处置过程恶臭预警集成技术研究

为解决沈阳市污泥堆存处置过程恶臭污染管理与预警方面存在的问题,文章研究了污泥恶臭产生条件、污泥堆存处置过程恶臭污染特征,明确了污泥堆存处置过程的恶臭风险因素。应用层次分析法构建了恶臭风险评估与分级预警指标体系,并通过案例分析对指标体系进行了优化,在此基础上开发了恶臭风险评估与分级预警系统软件,为企业恶臭风险管理提供了技术支撑,为环境管理部门提供了科学的监管方法。     

恶臭气体的生物处理技术

叙述了各种生物脱臭的处理方法及其优、缺点以及提高生物脱臭效率的途径，同时还介绍了一些生物脱臭法的最新研究成果和发展方向。     

生物脱臭技术研究进展

生物处理恶臭物质已成为当今恶臭处理研究的主流 ,本文对当前国内外各种生物处理方法进行了综述。由于脱臭微生物是生物脱臭工艺的核心 ,文中同时介绍了一些脱臭微生物的最新研究成果与展望。     

生物滴滤法处理低浓度混合恶臭气体的研究

实验采用生物滴滤法处理化工厂污水恶臭气体.研究表明在处理较低浓度H2S,NH3,VOCs的恶臭气体时,该方法能取得很好的处理效果,并具有一定的抗冲击负荷能力,能达到《恶臭污染物排放标准》(GB 14554-93)厂界标准的要求.     

生物脱臭技术初探

通过以Ｈ２Ｓ为代表的恶臭气体和以活性污泥加热干燥产气对象的脱臭实验，对生物法脱臭机理及影响生物脱臭效果的一些因素进行了有益的研究。     

天津市中心城区污水泵站恶臭排放特征研究

为了研究天津市中心城区污水泵站恶臭排放特征,分别在夏、秋、冬3季对4座泵站的进水格栅和出水口进行采样,采用3点比较式臭袋法分析臭气浓度,采用冷阱富集-GC/MS技术分析恶臭物质组成和含量。结果表明,污水泵站6个点位共检出包括烷烃、烯烃、芳香烃、卤代烃、含氧烃、有机硫以及无机气体在内的7类50多种物质,其中无机气体和含氧烃是主要成分。污水泵站广泛存在的污染物质共8种：苯、甲苯、乙苯、甲醛、乙醛、甲硫醇、氨和硫化氢,其中硫化氢、甲硫醇和甲醛的浓度较高。污水泵站各季节的恶臭污染都较严重,实测臭气浓度基本上都超过2000,H2S、甲硫醇和乙醛对恶臭污染贡献比较大,其中H 2S是最主要的致臭物质。     

三点比较式臭袋法测定污染源臭气的改进建议

提出采用三点比较式臭袋法测定污染源臭气样品时,可能出现因初始稀释倍数设定过高而无法准确计算结果的情况,单一的初始稀释倍数无法适用于同一批样品和低浓度样品.建议取消判定师的初步嗅辨试验环节,直接从第一级稀释倍数开始嗅辨试验,低浓度样品转为环境空气样品分析,同时实行嗅辨员分级制度.     

Malodor emission characteristics in rendering plants

Odor emission characteristics in rendering plant was studied by measuring 14 kinds of odorants in the emission gases from main processes: cooking of raw bone, concentrating of glue, refining of fat, and drying of bone. The odor from cooker had higher concentration of all odorous components compared with the other processes. From any process except the drying one, there were detected sulfur‐containing odorants in very high concentration. Of the odorants, concentrations of hydrogen sulfide and methyl mercaptan were higher. The odor from drying bed had comparatively low concentration of sulfur‐containing odorants, and higher concentration of ammonia and trimethylamine were detected. Lower fatty acids were detected from all processes though the concentrations were low. In the odorous gases taken at both the emission source and borderline side, high correlations were recognized between organoleptic test value and concentrations of measured odorants.     

The sweet smell of… courtship: Effects of pleasant ambient fragrance on women's receptivity to a man's courtship request

Studies have shown that pleasant scents favor positive social relationships. However, the effect of pleasant ambient odor on romantic relationships has never been tested. In a field experiment, 18–25 year old women walking alone in a shopping mall were approached by an attractive 20 year old male-confederate who solicited them for their phone number. The women were solicited as they were walking in areas with pleasant ambient odors (e.g., pastries) or with no odor. It was found that women agreed more often to the confederate's courtship solicitation in the pleasant smelling areas. Positive mood induced by ambient odors may explain such results.     

采取措施消除恶臭污染

臭气污染防治应贯穿于正常生产、开停工等全过程中，措施要得力，管理要加强、本文总结了我厂近年来在臭气防治方面所做的工作。