工业企业大气污染治理工艺技术及预防措施

工业企业生产过程中,排放多种污染物,大气污染物综合排放标准统计在册的污染物种类有33种,如不加强治理则将直接造成大气污染问题,所以有效治理大气污染问题是确保工业企业走绿色发展之路的必然选择。本文在对工业企业大气污染防治的重要性进行分析的基础上,对常用的大气污染治理工艺技术及应用进行了论述,最后提出一些切实可行的预防措施。

南八仙复杂井筒治理工艺技术研究与应用效果分析

青海油田南八仙油气田具备断层多、油气水关系复杂的地质特征,经过多年的油气开发,部分老井存在井下落物或井内留有多个桥塞或者封隔器的情况,或者由于前期油藏开发需求,优先动用了上部油层,对后期下部产层的开发产生影响,表现为部分老井井筒相对复杂,整体井筒现状呈复杂化趋势。因此,针对南八仙地区复杂井筒采取一套适合的工艺技术治理模式,对该地区下步实现层组的高效利用以及保障后期油气稳定开发有着重要意义。

浅谈VOCs常见治理工艺与现状

挥发性有机物(VOCs)已成为限制我国空气环境质量的重要污染因子,VOCs的有效治理已经迫在眉睫。本文系统介绍了我国VOCs末端治理的常见技术工艺,并简要分析了现阶段VOCs管理现状,以期为十四五期间VOCs的管控提供参考依据。

Bioremediation potential of spirulina:toxicity and biosorption studies of lead

This study examines the possibility of using live spirulina to biologically remove aqueous lead of low concentration (below 50 mg/L) from wastewater. The spirulina cells were first immersed for seven days in five wastewater samples containing lead of different concentrations, and the growth rate was determined by light at wavelength of 560 nm. The 72 h-EC50 (72 h medium effective concentration) was estimated to be 11.46 mg/L (lead). Afterwards, the lead adsorption by live spirulina cells was conducted. It was observed that at the initial stage (0–12 min) the adsorption rate was so rapid that 74% of the metal was bio- logically adsorbed. The maximum biosorption capacity of live spirulina was estimated to be 0.62 mg lead per 105 alga cells.