为了抑制煤流扬尘,以3种凝并性物质:淀粉接枝丙烯酸聚合物(简称聚合物)、聚阴离子纤维素(PAC)、羧甲基淀粉(CMS),3种润湿性物质:X-100、十二烷基硫酸钠(SDS)、十二烷基苯磺酸钠(SDBS)为研究对象,采用复配的方法,对比研究了不同复配产物...为了抑制煤流扬尘,以3种凝并性物质:淀粉接枝丙烯酸聚合物(简称聚合物)、聚阴离子纤维素(PAC)、羧甲基淀粉(CMS),3种润湿性物质:X-100、十二烷基硫酸钠(SDS)、十二烷基苯磺酸钠(SDBS)为研究对象,采用复配的方法,对比研究了不同复配产物的凝并性、润湿性、渗透性等性能及抑尘效果,得到了一组高效煤流抑尘剂配方:0.1%PAC+0.03%X-100。各项指标:粘度9.7 m Pa·s、表面张力40.06 m N/m、渗透时间38 s,该煤流抑尘剂能有效地抑制煤流扬尘、减少空气污染、节约资源。展开更多
The components of dust-suppressant were determined based on the analysis on characteristics and mechanisms of road dust raising in open-pit mines. The components were initially selected from moisture agent, coagulatio...The components of dust-suppressant were determined based on the analysis on characteristics and mechanisms of road dust raising in open-pit mines. The components were initially selected from moisture agent, coagulation agent and surfactant. The optimal formulation was determined based on orthogonal test and using the water loss rate as the evaluation index. The performances of moisture releasing and adsorption, wind resistance of optimal formulation in the natural environment were tested. The results show that the formula obtained in experiments provide a good performance of moisture absorption and water retention, and it also had a good dust preventing and controlling performance due to its high surface strength and consolidation under dry conditions. It has good application prospects considering the wide variety of sources for materials and the simple preparation process.展开更多
皮蛋废水水质相当复杂,既属于含重金属离子废水,又属于中等浓度含盐有机废水。针对皮蛋废水特点,采用混凝+吸附方法预处理皮蛋废水,将PAC与粉煤灰按2∶5的投加比混合复制成一种新型复合混凝吸附剂,通过正交实验考察了复合药剂的较佳处...皮蛋废水水质相当复杂,既属于含重金属离子废水,又属于中等浓度含盐有机废水。针对皮蛋废水特点,采用混凝+吸附方法预处理皮蛋废水,将PAC与粉煤灰按2∶5的投加比混合复制成一种新型复合混凝吸附剂,通过正交实验考察了复合药剂的较佳处理条件。结果表明,在投加量为5 g/L,pH为6.5左右,搅拌时间约为14 m in,处理温度为25℃常温的条件下能够得到较为理想的废水处理效果,最终废水中剩余COD及BOD5的去除率分别达到了81.25%和70.3%;SS、色度重金属离子Cu2+及Zn2+的去除率也分别达到92.1%、98.3%、92.1%和99.2%,达到了污水处理厂纳管标准。展开更多
To remove effectively the pollutants from printing and dyeing wastewater, a new complex adsorption-coagulation agent was developed and employed in dyeing wastewater treatment. The experimental results showed that bett...To remove effectively the pollutants from printing and dyeing wastewater, a new complex adsorption-coagulation agent was developed and employed in dyeing wastewater treatment. The experimental results showed that better removals of COD, turbidity and color could be efficiently realized under the operating conditions of mixing at 150 r/min, reacting within 5 min and dosing at 15 g/L and 20 g/L, respectively. Combined with the settled sludge, the agent could be recycled for further adsorption and coagulation within 10 times. Compared to the conventional coagulants, the newly-developed agent had such merits as suitability for wide pH range of wastewater, less sludge production, reutilization of the condensed sludge and low operation cost.展开更多
文摘为了抑制煤流扬尘,以3种凝并性物质:淀粉接枝丙烯酸聚合物(简称聚合物)、聚阴离子纤维素(PAC)、羧甲基淀粉(CMS),3种润湿性物质:X-100、十二烷基硫酸钠(SDS)、十二烷基苯磺酸钠(SDBS)为研究对象,采用复配的方法,对比研究了不同复配产物的凝并性、润湿性、渗透性等性能及抑尘效果,得到了一组高效煤流抑尘剂配方:0.1%PAC+0.03%X-100。各项指标:粘度9.7 m Pa·s、表面张力40.06 m N/m、渗透时间38 s,该煤流抑尘剂能有效地抑制煤流扬尘、减少空气污染、节约资源。
文摘The components of dust-suppressant were determined based on the analysis on characteristics and mechanisms of road dust raising in open-pit mines. The components were initially selected from moisture agent, coagulation agent and surfactant. The optimal formulation was determined based on orthogonal test and using the water loss rate as the evaluation index. The performances of moisture releasing and adsorption, wind resistance of optimal formulation in the natural environment were tested. The results show that the formula obtained in experiments provide a good performance of moisture absorption and water retention, and it also had a good dust preventing and controlling performance due to its high surface strength and consolidation under dry conditions. It has good application prospects considering the wide variety of sources for materials and the simple preparation process.
文摘皮蛋废水水质相当复杂,既属于含重金属离子废水,又属于中等浓度含盐有机废水。针对皮蛋废水特点,采用混凝+吸附方法预处理皮蛋废水,将PAC与粉煤灰按2∶5的投加比混合复制成一种新型复合混凝吸附剂,通过正交实验考察了复合药剂的较佳处理条件。结果表明,在投加量为5 g/L,pH为6.5左右,搅拌时间约为14 m in,处理温度为25℃常温的条件下能够得到较为理想的废水处理效果,最终废水中剩余COD及BOD5的去除率分别达到了81.25%和70.3%;SS、色度重金属离子Cu2+及Zn2+的去除率也分别达到92.1%、98.3%、92.1%和99.2%,达到了污水处理厂纳管标准。
文摘To remove effectively the pollutants from printing and dyeing wastewater, a new complex adsorption-coagulation agent was developed and employed in dyeing wastewater treatment. The experimental results showed that better removals of COD, turbidity and color could be efficiently realized under the operating conditions of mixing at 150 r/min, reacting within 5 min and dosing at 15 g/L and 20 g/L, respectively. Combined with the settled sludge, the agent could be recycled for further adsorption and coagulation within 10 times. Compared to the conventional coagulants, the newly-developed agent had such merits as suitability for wide pH range of wastewater, less sludge production, reutilization of the condensed sludge and low operation cost.
