沉淀法预处理硫辛酸厂高质量浓度含硫废水试验研究
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摘要
采用沉淀法预处理硫辛酸厂高浓含硫废水,以硫酸亚铁为沉淀剂,考察了沉淀剂用量、搅拌速度、静置时间、初始pH等对废水脱硫和脱COD效果的影响。结果表明,在七水硫酸亚铁加入量为25g/L,搅拌速度为90r/min、静置时间为2h、废水初始pH为8的最佳工艺条件下,废水COD脱除率和硫脱除率分别稳定在52%和80%以上;气相色谱!质谱联用测定结果表明,处理后废水中含有溴丁烷、三丁胺和硫辛酸三种有机污染物。该方法工艺简单且成本低廉,可用来对进入深度处理装置前的高浓含硫废水进行预处理。
Precipitation method was used to pretreat the lipid acid wastewater containing high concentration of sulfur,and ferrous sulfate was used as the precipitant.The effects of precipitant quantity,stirring speed,standing time,initial pH value of wastewater on removing rate of sulfide and COD were investigated.The results showed that at the optimum conditions of ferrous sulfate dosage of 25g/L,stirring speed of 90r/min,standing time of 2h,and initial pH value of wastewater of 8,the removing rates of sulfide and COD were more than 80%and 52%,respectively.Through gas chromatography-mass spectrometry(GC-MS)analysis,it was shown that the organic pollutants in the pretreated wastewater were 1?bromobutane,tributylamine and lipid acid.For its simple process and low cost,coagulation method may be adoped as the suitable pretreating method before the lipid acid plant wastewater which contained high concentration of sulfur was sent to the advanced treating unit.
Precipitation method was used to pretreat the lipid acid wastewater containing high concentration of sulfur,and ferrous sulfate was used as the precipitant.The effects of precipitant quantity,stirring speed,standing time,initial pH value of wastewater on removing rate of sulfide and COD were investigated.The results showed that at the optimum conditions of ferrous sulfate dosage of 25g/L,stirring speed of 90r/min,standing time of 2h,and initial pH value of wastewater of 8,the removing rates of sulfide and COD were more than 80%and 52%,respectively.Through gas chromatography-mass spectrometry(GC-MS)analysis,it was shown that the organic pollutants in the pretreated wastewater were 1?bromobutane,tributylamine and lipid acid.For its simple process and low cost,coagulation method may be adoped as the suitable pretreating method before the lipid acid plant wastewater which contained high concentration of sulfur was sent to the advanced treating unit.
引文
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[3]汤春芳,刘云国,徐卫华,等.硫辛酸的研究概况[J].中国生物药物杂质,2005,26(1):52-55.
[4]刘红林,牛勃,常冰梅,等.α-硫辛酸与维生素E的抗氧化作用比较[J].中国药物与临床,2005,5(1):37-38.
[5]梁梓恒,刘仁军,肖乐业,等.催化氧化法处理含硫废水的研究[J].燃料与化工,2013,44(2):38-41.
[6]向波涛,王涛,刘军,等.超临界水氧化法处理含硫废水研究[J].化工环保,1999(2):1-7.
[7]张小军,周军,金奇庭,等.亚硫酸盐氧化法处理高浓度含硫废水[J].给水排水,2000,26(12):47-49.
[8]杨德敏,王兵,李永涛,等.过硫酸铵氧化处理高浓度含硫废水的研究[J].石油化工,2012,41(1):87-91.
[9]张克强,季民,张建顺.电化学方法处理含硫废水的过程和特性[J].农业环境科学学报,2003,22(1):90-92.
[10]辛世崇,苏宏.化学沉淀法处理含硫废水[J].吉林化工学院学报,1985(3):22-26.
[11]魏瑞霞,陈金龙,杨彩玲.硫辛酸生产废水的处理及资源化研究[J].水处理技术,2010,36(9):78-82.
[12]姜峰,潘永亮,梁瑞,等.含硫废水的处理与研究进展[J].兰州理工大学学报,2004,30(5):68-71.
[13]李晔,刘跃,左慧,等.混凝沉淀法处理磷矿浮选废水试验研究[J].工业安全与环保,2009,35(4):6-8.
[14]雷春生,王桂玉,姚倩,等.化学沉淀法预处理高质量浓度的氨氮废水[J].常州大学学报(自然科学版),2010,22(3):46-48.
[15]国家环境保护总局.水和废水监测分析方法[M].北京:中国环境科学出版社,2002.
[16]朱乐辉,余保财,张玉,等.硫酸亚铁处理油墨废水的试验研究[J].水处理技术,2010,36(12):83-86.
[17]闫金霞,董韶峰,卜永强,等.零价铁法处理染料废水脱色效果研究[J].染料与染色,2007,44(4):45-46.