排序方式: 共有44条查询结果,搜索用时 125 毫秒
41.
采用正极性高压直流供电和串齿线放电极——管式接地极构成的放电等离子体反应器,研究了苯系物(苯、甲苯和对二甲苯)去除效率与供电电压之间的关系,以及放电极齿轮数对苯系物去除效率、COx(CO2+CO)生成量和能量效率的影响。研究结果表明,苯系物的去除效率、COx生成量皆随电压升高而增大。随着电压升高,能量效率先升后降,当电压为11kV左右时,能量效率最高。对应放电齿轮数为31的苯系物去除效率、COx生成量和能量效率皆高于放电齿轮数为55或7,这表明对应特定的等离子体反应器,有一最佳放电齿数匹配。 相似文献
42.
不同再生水消毒方式对斑马鱼胚胎毒性的影响及其危害分级 总被引:1,自引:0,他引:1
以斑马鱼胚胎毒性测试研究海南某污水处理厂出水经氯胺、二氧化氯、次氯酸钠、臭氧和紫外几种消毒处理后对斑马鱼胚胎的毒性。利用胚胎毒性和层次分析法构建危害分级方法及其指标体系,评价消毒危害。研究结果表明:消毒处理前的二沉池出水未产生胚胎发育毒性效应,但经次氯酸钠、氯胺、臭氧、二氧化氯对再生水消毒处理可使斑马鱼胚胎出现卵黄囊异常、心跳减缓、色素沉积减少、孵出延缓和卷尾等毒理反应;不同消毒方式处理的再生水可致斑马鱼胚胎死亡率增加,胚胎毒性依次为:二氧化氯紫外紫外+次氯酸钠=二沉池出水(不消毒)氯胺=紫外+氯胺臭氧次氯酸钠;不同消毒方式的危害分级为:二氧化氯和紫外消毒构成轻微危害,危害等级为I级,紫外+次氯酸钠、紫外+氯胺、氯胺消毒构成中度危害,危害等级为II级,次氯酸钠危害较强,其危害等级为III级;化学消毒剂与紫外线组合消毒可降低再生水消毒的危害。 相似文献
43.
Sarmah Purbashree Ishiguro Takeshi Maruyama Kenji Xue Tianle Yamawaki Atsushi Katsumi Takeshi Takai Atsushi Omine Kiyoshi Doi Yoichi 《Journal of Material Cycles and Waste Management》2022,24(6):2183-2200
Journal of Material Cycles and Waste Management - Mechanical properties and slope stability of inert waste landfills under seismic condition were studied with three different approaches: in-situ... 相似文献
44.
He Wei Zhu Tianle Li Jing 《Frontiers of Environmental Science & Engineering in China》2007,1(2):153-158
The effects of gas compositions and reaction conditions on NO conversion by positive streamer discharge were experimentally
investigated by using a link tooth wheel-cylinder reactor. The results showed that NO conversion increased with increasing
O2 concentration and NH3 concentration, but decreased with increasing inlet NO concentration and gas flow rate. The addition of CO2 or H2O to the feed gas promoted NO conversion by increasing the maximum discharge voltage, and NH4NO3 was formed in the presence of NH3. There was a most suitable range interval between discharge tooth wheels if both NO conversion and energy consumption were
considered. Increasing applied voltage resulted in the increase in the amount of O3 generated by streamer discharge. 相似文献