土壤有机污染物监测与生物处理措施研究

为了实现污染土壤的微生物修复,研究土壤有机污染物监测与生物处理措施。根据研究区域土壤属性的结构特征优化监测点地理布局,完成土壤有机污染物监测。测定土壤理化性质及有机污染物含量,得到土壤粒级组成、理化性质和石油污染物含量关系;筛选优势微生物菌株,降解土壤中的有机污染物。实验结果表明,真菌在石油有机物污染土壤的生物修复处理中起着重要的降解作用,PH5的偏酸性条件和40℃的温度条件能够加快微生物的降解,提高降解率。生物处理15天后,土壤样品中的含油量从25.1 g/kg下降到了1.1 g/kg,较大程度地提高了降解率和二氧化碳累积释放量。

畜禽舍臭味治理技术措施

畜禽舍的异味排放越来越成为畜禽舍建设和运营过程中关注的问题,说明了畜禽舍臭味的来源、危害和控制方法,以及生物处理措施的应用,用一个猪场的实例说明了解决方法,为畜禽舍的臭味治理提出了切实可行的方案。

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.