沈阳市推行排污许可证制度的回顾、反思及对策研究

通过对沈阳市实施排污许可证制度的回顾、发现其存在的问题,并对推行排污许可讧制度提供对策与措施。     

非热放电荷电净化餐饮油烟装置研究

利用非热放电荷电并捕集油烟颗粒的原理净化餐饮油烟 ,实现油烟净化单元高效化和小型化。本文设计制作了非热放电油烟捕集装置、实验研究了油烟捕集效率、并考察了捕集装置的运行可靠性 ,最终确认非热放电油烟净化装置小型化的可行性     

重庆人口发展与生活污水治理对策的探讨

本文通过对重庆城区两江水质的分析表明：主要污染物来自人口急剧增加所产生的生活污水，从而提出了占地少、投资低、效果佳的沼气净化池处理方法和措施。     

上海市固体废弃物的产生源现状分析

从排污行业、单位类别，经济类型和企业规模上对目前上海市危险废物、一般废物和其他废物的现状进行综述，并初步探讨了固体废弃物的资源潜力和管理技术。     

冶金企业无组织排放颗粒物影响评价

以上海市某冶金企业为例,该厂有正常运行的冶炼炉13座,每年向大气中排放大量颗粒污染物.基于高斯倾斜烟羽模式,整理了2003年上海市全年的气象资料,运用气象概率矩阵法计算了该厂直排点源及无组织面源排放颗粒物的影响,得出了厂区内无组织排放颗粒物落地浓度等值线图.计算结果表明,厂区内颗粒物污染主要来自无组织面源,污染集中在厂区中心的污染源附近;直排点源对环境的影响较小,污染主要集中在下风向.     

沈阳市工业污染源指标化控制的研究

本文在研究沈阳市工业污染源构成基础上，根据沈阳市水系统主要污染物总量控制目标，提出了主要污染源主要污染物指标化控制目标．通过污水治理技术经济分析，探讨实现工业污染源环境目标管理的途径．     

味精生产的污染排放分析与治理研究

以东北地区某味精生产厂为例,对味精生产从水体、大气、固废三个方面进行了污染分析。通过对污水处理和大气污染治理的系统控制以及对固体废弃物的综合利用研究,结果表明,味精生产中污染排放能够达到国家的相关标准。     

Regulating oil and gas facility stormwater discharge: An assessment of surface impoundments,spills, and permit compliance

Contaminated stormwater runoff from oil and gas (O&G) operations can pose a significant threat to surface waters. The purpose of this study is to examine the extent of this threat and identify more specific permitting requirements to protect surface waters. To better understand the extent of the threat, this paper identified and characterized the use of waste surface impoundments at O&G facilities as well as the threat level from O&G spills in California. To assess the efficacy of the current federal and California state-permitting regime, the paper evaluated stormwater permit compliance in two California counties. It also reviewed selected spill cases and associated Spill Prevention, Control and Countermeasure Plans and Stormwater Pollution Prevention Plans to identify the adequacy of current industry practices.The analysis showed that contaminated stormwater from O&G facilities can be better regulated. The U.S. Environmental Protection Agency does not require O&G facilities to file for an Industrial Stormwater General Permit even though many O&G industry practices have the potential to contaminate stormwater runoff from the site. When O&G facilities discharge a Reportable Quantity of a hazardous chemical or violate a water quality standard, they are required to enroll in the National Pollutant Discharge Elimination System permit program. Spills, although not a direct indication of stormwater runoff, can highlight polluted runoff discharges that should have been regulated. Medium and large spills that reached waterways were such a risk for which operators did not file for a permit. In California new filing requirements for the oil and gas industry require all facilities that discharge stormwater that has come into contact with any overburden, raw material, or intermediate products located on the site, to file for an Industrial Stormwater General Permit. As this study showed, there has been an increase in enrollment since the enactment of the new requirements. Having all facilities enroll in the general permit program, as done in California, would require minimum monitoring and maintenance that could help prevent spills. A further step to ensure better protocol is to require specific pollution control practices in addition to the current general permit requirements. Such permitting regimes not only can be implemented on the US federal level but also internationally.     

Impact of Land-Based Sources On Marine Environment: Phytoplankton Blooms Within an Annual Cycle

The discharge water into the western region of Alexandria (Egypt), creates suitable conditions for the acceleration of the phytoplankton growth; daily replenishment of nutrients and development of density stratified water column. Water transparency and ammonia concentrations seem to be affecting the variations of the numerical standing crop. Eight phytoplankton bloom pulses of different causative species were observed. Asterionella glacialis represents a newly recorded red tide species in the neritic waters of Alexandria.     

某兽药厂废气治理改造工程实例

结合江苏常州某兽药厂废气污染的监测和改造经验,总结了兽药厂废气污染特点,并采用低温等离子体、碱液吸收和植物除臭剂等综合治理技术有效控制了废气污染。低温等离子体净化设备采用2组串联式布置,反应器内设计风速≤1 m/s,反应时间≥4 s。植物除臭净化设备利用原有活性炭吸附塔改造,改造成本较低。改造设备总投资约60万元,废气处理系统运行费用约788元/d。相关监测数据表明上述工艺在设备正常运行时可确保污染物达标排放。