三种工业废水急性毒性及化学成分随工艺流程变化

发布时间：2018-06-20 12:02

本文选题：明亮发光杆菌 + 毒性鉴别评价　；参考：《大连理工大学》2015年硕士论文

【摘要】：本研究采用明亮发光杆菌作为受试生物对石化废水、颜料废水和制药废水的急性毒性进行研究。采用固相萃取、液液萃取以及GC-MS等手段对三种废水进行化学成分分析。以明亮发光杆菌作为受试生物对制药废水进水进行毒性鉴别评价。首先,研究了三种工业废水对明亮发光杆菌急性毒性大小。结果显示对明亮发光杆菌来说,三种废水毒性随工艺处理流程去除情况有所不同。石化废水处理工艺为A/O工艺,制药废水处理工艺为“水解酸化+好氧”工艺,颜料废水处理工艺为A2/O工艺。实验结果表明,石化和制药废水对发光菌毒性随工艺处理流程逐级降低,且石化废水和颜料废水毒性与COD均具有显著相关性。而颜料废水对发光菌毒性缺氧池毒性最强,其次为厌氧池和好氧池。三种废水出水均未检测到急性毒性。其次,对三种工业废水的化学成分进行分析,考察废水毒性来源,以及分析废水中有机物在经各工艺处理流程后变化情况。实验结果表明,经工艺处理后废水中的大部分有机物被去除,小分子物质增多。最后,采用明亮发光杆菌作为受试生物,对制药废水进水进行毒性鉴别评价。实验结果表明,该制药进水对发光菌产生急性毒性的主要致毒物质为金属铜。废水中的氧化性无机物(硝酸盐、亚硝酸盐等)也对水样毒性有一定贡献。
[Abstract]:In this study, the acute toxicity of luminescent bacilli was used as a subject to the acute toxicity of petrochemical wastewater, pigment wastewater and pharmaceutical wastewater. The chemical composition of three kinds of wastewater was analyzed by solid phase extraction, liquid liquid extraction and GC-MS. First, the acute toxicity of three kinds of industrial wastewater to bright luminescent bacilli was studied. The results showed that the toxicity of three kinds of wastewater was different with the process treatment process for bright luminescent bacteria. The treatment process of petrochemical wastewater was A/O process, and the process of pharmaceutical wastewater treatment was "water solution acidification + aerobic" process and the treatment process of pigment wastewater. The results of A2/O process showed that the toxicity of petrochemical and pharmaceutical wastewater decreased with the process treatment process step by step, and the toxicity of petrochemical wastewater and pigment wastewater had significant correlation with COD. The toxicity of pigment wastewater to the toxic anoxic pool was the strongest, followed by anaerobic pool and aerobic pool. The three wastewater effluent had not been detected acute. Toxicity. Secondly, the chemical composition of the three kinds of industrial wastewater was analyzed, the source of the toxicity of the wastewater was investigated, and the changes of the organic matter in the wastewater were analyzed after the process treatment process. The experimental results showed that most of the organic matter was removed and the small fractions increased after treatment. Finally, the bright luminescent bacillus was used as a result. The experimental results show that the main toxic substance of the pharmaceutical wastewater to produce acute toxicity to luminescent bacteria is metal copper. The oxidizing inorganic substances in the wastewater (nitrate, nitrite, etc.) also give some tribute to the toxicity of water samples.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：O657;X832

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