[Objective] The aim was to study the COD removal effect of emulsifier wastewater and provide experimental basis for the design, adjustment and operation of project. [Method] Using UASB+SBR technology to process emulsi...[Objective] The aim was to study the COD removal effect of emulsifier wastewater and provide experimental basis for the design, adjustment and operation of project. [Method] Using UASB+SBR technology to process emulsifier wastewater, the problems in operation process were discussed. [Result] The experiment carried out for 71 d, under the situation of large changes of COD concentration (the highest: 10 924 mg/L, the lowest: 2 880 mg/L, mean value: 5 751 mg/L), COD removal efficiency of UASB was around 70% and the COD removal efficiency of SBR was above 70%, which met the emission standard. [Conclusion] The combined technology had good treatment effect on the emulsifier wastewater.展开更多
通过田间小区试验,验证了不同助剂对20%氯氟吡氧乙酸乳油(EC)防除空心莲子草的增效作用,并系统研究了不同助剂对20%氯氟吡氧乙酸EC药液在空心莲子草叶面润湿性能的影响。结果表明:添加氮酮、油酸甲酯或聚三硅氧烷可显著提高20%氯氟吡氧...通过田间小区试验,验证了不同助剂对20%氯氟吡氧乙酸乳油(EC)防除空心莲子草的增效作用,并系统研究了不同助剂对20%氯氟吡氧乙酸EC药液在空心莲子草叶面润湿性能的影响。结果表明:添加氮酮、油酸甲酯或聚三硅氧烷可显著提高20%氯氟吡氧乙酸EC对空心莲子草地上部分鲜重及再生能力的抑制效果,其中以添加聚三硅氧烷的处理增效最为显著,添加聚三硅氧烷后,20%氯氟吡氧乙酸EC对空心莲子草地上部分鲜重、再生茎叶鲜重的抑制率分别为86.95%和81.66%;添加氮酮、油酸甲酯或聚三硅氧烷后,20%氯氟吡氧乙酸EC药液在空心莲子草叶面的表面张力显著降低,接触角减小,滞留量增加,其中以添加聚三硅氧烷的处理效果最为显著,添加聚三硅氧烷后,20%氯氟吡氧乙酸EC的初始接触角小于50°,180 s时接触角均小于15°,表面张力为25.09 m N/m,滞留量为1.891 g/cm2;添加氮酮或聚三硅氧烷可缩短20%氯氟吡氧乙酸EC药液在空心莲子草叶面正、反面的干燥时间,而添加油酸甲酯则会延长其干燥时间。研究表明,添加助剂改善了20%氯氟吡氧乙酸EC药液在空心莲子草叶面的润湿性能,可能是助剂提高20%氯氟吡氧乙酸EC对空心莲子草防效的原因之一。展开更多
文摘[Objective] The aim was to study the COD removal effect of emulsifier wastewater and provide experimental basis for the design, adjustment and operation of project. [Method] Using UASB+SBR technology to process emulsifier wastewater, the problems in operation process were discussed. [Result] The experiment carried out for 71 d, under the situation of large changes of COD concentration (the highest: 10 924 mg/L, the lowest: 2 880 mg/L, mean value: 5 751 mg/L), COD removal efficiency of UASB was around 70% and the COD removal efficiency of SBR was above 70%, which met the emission standard. [Conclusion] The combined technology had good treatment effect on the emulsifier wastewater.
文摘通过田间小区试验,验证了不同助剂对20%氯氟吡氧乙酸乳油(EC)防除空心莲子草的增效作用,并系统研究了不同助剂对20%氯氟吡氧乙酸EC药液在空心莲子草叶面润湿性能的影响。结果表明:添加氮酮、油酸甲酯或聚三硅氧烷可显著提高20%氯氟吡氧乙酸EC对空心莲子草地上部分鲜重及再生能力的抑制效果,其中以添加聚三硅氧烷的处理增效最为显著,添加聚三硅氧烷后,20%氯氟吡氧乙酸EC对空心莲子草地上部分鲜重、再生茎叶鲜重的抑制率分别为86.95%和81.66%;添加氮酮、油酸甲酯或聚三硅氧烷后,20%氯氟吡氧乙酸EC药液在空心莲子草叶面的表面张力显著降低,接触角减小,滞留量增加,其中以添加聚三硅氧烷的处理效果最为显著,添加聚三硅氧烷后,20%氯氟吡氧乙酸EC的初始接触角小于50°,180 s时接触角均小于15°,表面张力为25.09 m N/m,滞留量为1.891 g/cm2;添加氮酮或聚三硅氧烷可缩短20%氯氟吡氧乙酸EC药液在空心莲子草叶面正、反面的干燥时间,而添加油酸甲酯则会延长其干燥时间。研究表明,添加助剂改善了20%氯氟吡氧乙酸EC药液在空心莲子草叶面的润湿性能,可能是助剂提高20%氯氟吡氧乙酸EC对空心莲子草防效的原因之一。