Study of soil-plant transfer of 226Ra under greenhouse conditions

A soil-plant transfer study was performed using soil from a former uranium ore processing factory in South Bohemia. We present the results from greenhouse experiments which include estimates of the time required for phytoremediation. The accumulation of ²²⁶Ra by different plant species from a mixture of garden soil and contaminated substrate was extremely variable, ranging from 0.03 to 2.20 Bq ²²⁶Ra/g DW. We found differences in accumulation of ²²⁶Ra between plants from the same genus and between cultivars of the same plant species. The results of ²²⁶Ra accumulation showed a linear relation between concentration of ²²⁶Ra in plants and concentration of ²²⁶Ra in soil mixtures. On the basis of these results we estimated the time required for phytoremediation, but this appears to be too long for practical purposes.     

燃煤电厂电-袋复合除尘器的应用及问题分析

近年来,部分燃煤电厂采用了电-袋复合除尘器,通过对33台电-袋复合除尘器的调查分析,结果发现在2年半内就发生了大量破袋而全部更换,其原因是前级电除尘器产生臭氧使烟气中NO2、SO3等含量有所增加,引起下游的滤袋大面积强度下降导致大量破损。所以在推广应用中要慎重,避免造成不必要的损失。     

胶州湾入海河流和排污口水体中壬基酚的污染状况调查及入海通量核算

调查了2009年枯水期和丰水期胶州湾河流入海口和污水处理厂排污口壬基酚污染状况,并初步估算了胶州湾陆源壬基酚的入海通量。结果显示,入胶州湾各河流水体中壬基酚浓度差异较大,枯水期和丰水期分别为0.11～3.17 μg/L和0.09～10.8 μg/L,其中墨水河污染最为严重,其次为娄山河、海泊河、跃进河、李村河、大沽河、镰湾河和白沙河,而洋河污染则相对较轻;各污水处理厂出水口壬基酚浓度相对稳定,枯水期和丰水期为0.11～0.17 μg/L和0.15～0.29 μg/L。枯水期和丰水期胶州湾壬基酚入海通量分别为6.5 kg/d和11.8 kg/d。     

耐寒人工湿地植物石龙芮和酸模联用研究

为了提高人工湿地在寒冷季节的运行效率，对2种非夏季植物作为湿地植物处理生活污水的可行性进行了研究。结果表明,在本实验条件下2种植物对N、P元素都具有很好的去除效果，对COD的去除也达到45%～50%。通过单一植物系统和复合植物系统的处理效果比较，发现石龙芮酸模复合植物系统对污水中的P元素和COD的去除率更高。研究表明，石龙芮和酸模作为人工湿地植物具有可行性，与常规植物互补使用能在一定程度上延长人工湿地的运行时间。     

光催化氧化深度处理电镀有机废水的工程化实验

采用光催化氧化联用技术对电镀有机废水进行深度处理工程化实验。探讨了uV、uV＋H2O3、uV＋H2O2＋TiO2、uV＋H2O2＋FeSO4、uV＋H2O2＋FeSO4＋TiO2、uV＋O3＋TiO2和uV＋03＋TiO2＋H2O2等体系对废水有机污染物去除率的影响。结果表明，相较于其他反应体系，uV＋O3＋TiO2＋H2O2体系具有更好的氧化效果，经碳滤处理后去除率达到90％以上，最终出水水质满足GB18918-20O2-级标准（A标准）的要求。实际运行项目偿还期5．33年，NPV〉0，内部收益率大于基准值10％。研究表明，uV＋O3＋TiO2＋H2O，体系能降低加药量，工作量及运行成本。可为电镀企业实际废水处理提供现实依据，为优化电镀废水的处理工艺提供参考。     

Testing the capacity of clothing to act as a vector for non-native seed in protected areas

Although humans are a major mechanism for short and long distance seed dispersal, there is limited research testing clothing as a vector. The effect of different types of material (sports vs hiking socks), or different items of clothing (boots, socks, laces vs legs) or the same item (socks) worn in different places on seed composition were assessed in Kosciuszko National Park, Australia. Data was analyzed using Repeated Measures ANOVA, independent and paired t-tests, Multi-dimensional Scaling Ordinations and Analysis of Similarity. A total of 24,776 seeds from 70 taxa were collected from the 207 pieces of clothing sampled, with seed identified from 31 native and 19 non-native species. Socks worn off-track collected more native seeds while those worn on roadsides collected more non-native seeds. Sports socks collected a greater diversity of seeds and more native seeds than hiking socks. Boots, uncovered socks and laces collect more seeds than covered socks and laces, resulting in 17% fewer seeds collected when wearing trousers. With seeds from over 179 species (134 recognized weeds) collected on clothing in this, and nine other studies, it is clear that clothing contributes to unintended human mediated seed dispersal, including for many invasive species.     

洪湖沼泽土及涝洼水稻土水生作物开发研究

简要介绍了洪湖湖区的生态环境，阐述了湖周沼泽土和涝洼水稻土的性质及其开发利用现状。还报导了作者在该湖湖周进行水生作物开发利用研究的结果     

Specific Anatomical Features of Vegetative Organs in Some Macrophyte Species under Conditions of Industrial Pollution

Russian Journal of Ecology -