臭氧耦合PAM预处理褐煤气化废水的影响因素研究
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摘要
采用O_3耦合聚丙烯酰胺(PAM)法对褐煤气化废水进行预处理,考察pH、反应温度、搅拌时间、PAM投加量等因素对处理效果的影响。结果表明:各因素对处理效果的影响由大到小的顺序为反应温度、pH、PAM投加量和搅拌时间。最佳酸沉条件为反应温度40℃左右,pH≈3,PAM投加量0. 5 mg/L,搅拌时间约1 min。反应后化学需氧量(COD)去除率为12. 7%,产生的沉渣量为0. 33 g/L,254 nm处吸光度去除率为56. 0%,410 nm处吸光度去除率为21. 4%。预处理有效地去除废水中含有的大分子不饱和有机物,能够为后续生化氧化处理提供良好条件。
The effects of ozone and polyacrylamide( PAM) on the pretreatment of lignite gasification wastewater were investigated. The factors were pH,reaction temperature,stirring time and PAM dosage.Results showed that influence degree rank of treatment efficiency was reaction temperature,pH,PAM dosage and stirring time. The optimum conditions were 40 ℃,pH≈3,0. 5 mg/L PAM and 1 min stirring time. Results indicated that after pretreatment,the removal of chemical oxygen demand( COD) and sediment amount were 12. 7% and 0. 33 g/L,respectively. The removal of absorbance of 254 nm and 410 nm was 56. 0% and 21. 4%,respectively. After pretreatment,large molecular unsaturated organic substances were removed,and remaining wastewater were better for the subsequent biochemical oxidation treatment.
The effects of ozone and polyacrylamide( PAM) on the pretreatment of lignite gasification wastewater were investigated. The factors were pH,reaction temperature,stirring time and PAM dosage.Results showed that influence degree rank of treatment efficiency was reaction temperature,pH,PAM dosage and stirring time. The optimum conditions were 40 ℃,pH≈3,0. 5 mg/L PAM and 1 min stirring time. Results indicated that after pretreatment,the removal of chemical oxygen demand( COD) and sediment amount were 12. 7% and 0. 33 g/L,respectively. The removal of absorbance of 254 nm and 410 nm was 56. 0% and 21. 4%,respectively. After pretreatment,large molecular unsaturated organic substances were removed,and remaining wastewater were better for the subsequent biochemical oxidation treatment.
引文
[1]郝成浩,朱生华,白永辉,等. CO2气氛对胜利褐煤热解过程的影响[J].燃料化学学报,2017,3:272.
[2]吴大刚,赵代胜,魏江波.煤化工过程气化废渣和废碱液的产生及处理技术探讨[J].煤化工,2016,6:56.
[3]唐慧儒,黄镇宇,沈铭科,等.褐煤脱水及水质净化研究[J].中国环境科学,2015,3:735.
[4]宋银敏,冯伟,王云飞,等.胜利褐煤燃烧中未反应残留物结构特性及铁的添加效应[J].燃料化学学报,2016,12:1447.
[5]许超,刘猛,段钰锋,等.云南褐煤掺混城市污泥共水热产物理化特性研究[J].现代化工,2017,1:171.
[6]何玉玲,褚春凤,张振家.高浓度煤气化废水处理技术研究进展[J].工业水处理,2016,9:16.
[7]胡学伟,靳松望,王亚冰,等.煤气化废水中有机物对磷酸铵镁结晶法去除氨氮的影响[J].环境化学,2014,11:1957.
[8]刘建伟,谌伦建,薛中会,等.煤炭气化焦化废水的微生物处理技术现状[J].现代化工,2015,1:28.
[9]武强,谷启源,陈凯华,等. Fenton试剂-混凝沉淀深度处理煤气化废水的实验研究[J].煤化工,2011,6:45.
[10]常功法,洪卫,刘勃,等.煤化工废水生化处理有机营养剂增效技术研究[J].水处理技术,2017,1:82.
[11]曹宏斌.关于煤化工废水处理的思考及技术应用[J].煤炭加工与综合利用,2016,10:3.
[12]任健,何松波,孙承林.腐殖酸协同Mn2+催化臭氧氧化降解五氯苯酚[J].现代化工,2013,7:68.
[13]乔瑞平,魏祥甲,王兰,等. O3/H2O2/Fe2+催化氧化深度处理煤气化废水的研究[J].安全与环境学报,2016,6:219.
[14]权攀,陆曦,党孟辉,等.褐煤气化废水的物化预处理[J].南京工业大学学报(自然科学版),2015,37(4):129.
[15] WEI M Y,GAO L,LI J,et al. Activation of peroxymonosulfate by graphitic carbon nitride loaded on activated carbon for organic pollutants degradation[J]. Journal of Hazardous Materials,2016,316:60.
[16] YU Y,WEI H Z,YU L,et al. Sewage-sludge-derived carbonaceous materials for catalytic wet hydrogen peroxide oxidation of m-cresol in batch and continuous reactors[J].Environmental Technology,2016,37(2):153.
[17] YU Y,WEI H Z,YU L,et al. Catalytic wet air oxidation of mcresol over a surface-modified sewage sludge-derived carbonaceous catalyst[J]. Catalysis Science&Technology,2016,6(4):1085.
[2]吴大刚,赵代胜,魏江波.煤化工过程气化废渣和废碱液的产生及处理技术探讨[J].煤化工,2016,6:56.
[3]唐慧儒,黄镇宇,沈铭科,等.褐煤脱水及水质净化研究[J].中国环境科学,2015,3:735.
[4]宋银敏,冯伟,王云飞,等.胜利褐煤燃烧中未反应残留物结构特性及铁的添加效应[J].燃料化学学报,2016,12:1447.
[5]许超,刘猛,段钰锋,等.云南褐煤掺混城市污泥共水热产物理化特性研究[J].现代化工,2017,1:171.
[6]何玉玲,褚春凤,张振家.高浓度煤气化废水处理技术研究进展[J].工业水处理,2016,9:16.
[7]胡学伟,靳松望,王亚冰,等.煤气化废水中有机物对磷酸铵镁结晶法去除氨氮的影响[J].环境化学,2014,11:1957.
[8]刘建伟,谌伦建,薛中会,等.煤炭气化焦化废水的微生物处理技术现状[J].现代化工,2015,1:28.
[9]武强,谷启源,陈凯华,等. Fenton试剂-混凝沉淀深度处理煤气化废水的实验研究[J].煤化工,2011,6:45.
[10]常功法,洪卫,刘勃,等.煤化工废水生化处理有机营养剂增效技术研究[J].水处理技术,2017,1:82.
[11]曹宏斌.关于煤化工废水处理的思考及技术应用[J].煤炭加工与综合利用,2016,10:3.
[12]任健,何松波,孙承林.腐殖酸协同Mn2+催化臭氧氧化降解五氯苯酚[J].现代化工,2013,7:68.
[13]乔瑞平,魏祥甲,王兰,等. O3/H2O2/Fe2+催化氧化深度处理煤气化废水的研究[J].安全与环境学报,2016,6:219.
[14]权攀,陆曦,党孟辉,等.褐煤气化废水的物化预处理[J].南京工业大学学报(自然科学版),2015,37(4):129.
[15] WEI M Y,GAO L,LI J,et al. Activation of peroxymonosulfate by graphitic carbon nitride loaded on activated carbon for organic pollutants degradation[J]. Journal of Hazardous Materials,2016,316:60.
[16] YU Y,WEI H Z,YU L,et al. Sewage-sludge-derived carbonaceous materials for catalytic wet hydrogen peroxide oxidation of m-cresol in batch and continuous reactors[J].Environmental Technology,2016,37(2):153.
[17] YU Y,WEI H Z,YU L,et al. Catalytic wet air oxidation of mcresol over a surface-modified sewage sludge-derived carbonaceous catalyst[J]. Catalysis Science&Technology,2016,6(4):1085.
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