山西潞安煤基油公司外排水脱氟工程实践
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摘要
山西潞安煤基油公司气化炉因煤质变更掺烧兰炭后,外排水中的氟化物质量浓度(以F~-计)为45～65 mg/L。采用化学沉淀法+化学混凝法去除排水中的氟化物,使外排水中的氟化物质量浓度低于10 mg/L。投加的试剂溶解于水后其质量浓度分别为熟石灰200 mg/L、聚合硫酸铝20 mg/L、偏铝酸钠60 mg/L、阴离子聚丙烯酰胺1 mg/L。另外,该方法对水中的阴离子Cl~-和金属离子如Fe~(2+)、Fe~(3+)、Cu~(2+)、Mg~(2+)等也有较好的去除效果,出水浊度较低,回用水池的主要水质参数均低于直冷系统循环冷却水指标,取得了较好的环境效益和经济效益。
After the blue charcoal was mixed with burning because of change of coal quality in Shanxi Lu An coal-based oil company, the concentration of fluoride in effluent was commonly about 45～65 mg/L. Chemical precipitation and chemical coagulation methods were used to remove the fluoride from effluent in this reconstruction project, the concentration of fluoride in effluent was less than 10 mg/L. After the added agents were dissolved in water, their concentration were respectively calcium hydroxide 200 mg/L, polymeric aluminum sulfate 20 mg/L, sodium aluminate 60 mg/L, PAM 1 mg/L. Moreover, this method had significant removal effect to anion Cl~- and metal ions such as Fe~(2+),Fe~(3+),Cu~(2+),Mg~(2+),etc. The turbidity of the effluent was also low, and the main water quality parameters of the reuse pond were lower than circulating cooling water index of direct cooling system, and good environmental and economic benefits had been achieved.
After the blue charcoal was mixed with burning because of change of coal quality in Shanxi Lu An coal-based oil company, the concentration of fluoride in effluent was commonly about 45～65 mg/L. Chemical precipitation and chemical coagulation methods were used to remove the fluoride from effluent in this reconstruction project, the concentration of fluoride in effluent was less than 10 mg/L. After the added agents were dissolved in water, their concentration were respectively calcium hydroxide 200 mg/L, polymeric aluminum sulfate 20 mg/L, sodium aluminate 60 mg/L, PAM 1 mg/L. Moreover, this method had significant removal effect to anion Cl~- and metal ions such as Fe~(2+),Fe~(3+),Cu~(2+),Mg~(2+),etc. The turbidity of the effluent was also low, and the main water quality parameters of the reuse pond were lower than circulating cooling water index of direct cooling system, and good environmental and economic benefits had been achieved.
引文
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[3] 马云飞,李立,孟昭福,等.改性粉煤灰处理高质量浓度氟离子废水的初步研究[J].西北农林科技大学学报(自然科学版),2011,39(4):159-164.
[4] 汪柏春,赵萌.含氟废水处理的研究进展[J].价值工程,2016,35(29):171-172.
[5] 公新忠,丁德馨,李广悦,等.含氟离子和氯离子酸性废水处理技术[J].环境工程学报,2012,6(9):3157-3160.
[6] 郭刘秀.Cl-引起的不锈钢换热器失效及其防护[J].石油化工腐蚀与防护,2003,20(6):33-35.
[7] 刘辉,邹继颖.Cl-在不锈钢管道内腐蚀的安全性研究[J].吉林化工学院学报,2014,31(1):62-65.
[8] 周本省.工业水处理技术[M].北京:化学工业出版社,2002:123-124.
[9] 中华人民共和国住房和城乡建设部,中华人民共和国国家质量监督检验检疫总局.工业循环冷却水处理设计规范:GB/T 50050—2017[S].北京:中国计划出版社,2017.
[10] 高廷耀,顾国维.水污染控制工程[M].2版.北京:高等教育出版社,1999:207-209.
[11] 蔚东升,张梅玲,陈慧婷,等.铝酸钙去除水中氟离子的条件研究[J].环境科学与技术,2006,29(7):87-88.
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