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分别利用小麦、发光菌毒性测试技术研究了模拟丙烯腈废水以及几种处理工艺出水对小麦芽伸长、根伸长、发芽率和发光菌发光度的毒性效应差异。结果表明,丙烯腈对小麦芽伸长的毒性影响最大;各类物质对小麦根伸长和发芽率并未造成毒性影响;其他物质对发光菌发光度的毒性最大。模拟废水对小麦芽伸长、根伸长、发芽率和发光菌发光度的毒性效应分别为:部分相加、部分相加、协同和拮抗作用。几种处理工艺出水对上述指标的毒性影响顺序依次是:模拟废水>加成出水>活性炭吸附出水>Fenton法出水;Fenton法出水>模拟废水>加成出水>活性炭吸附出水;Fenton法出水>活性炭吸附出水>模拟废水>加成出水;活性炭吸附出水>加成出水>Fenton法出水>模拟废水。比较几种处理工艺出水的毒性发现,几乎每种废水的毒性都有所降低,这说明几种处理工艺能有效降低模拟废水的毒性,具有深刻的实际指导意义。
The toxic effects of simulated wastewater from acrylonitrile wastewater and several treatment processes on the elongation, root elongation, germination rate and luminescent luminescence of wheat sprouts were studied respectively by using the toxicity test of wheat and luminescent bacteria. The results showed that acrylonitrile had the greatest effect on the elongation of wheat malt. The toxicity of all kinds of materials to the elongation and germination rate of wheat roots was not affected. The other substances had the highest toxicity to luminescent bacteria luminescence. The toxic effects of simulated wastewater on wheat elongation, root elongation, germination rate and luminescent luminescence were: partial addition, partial addition, synergistic and antagonistic effects. The effluent of several treatment processes had the following order of effect on the above indicators: simulated wastewater> addition effluent> activated carbon adsorption effluent> Fenton process effluent; Fenton process effluent> simulated wastewater> addition effluent> activated carbon adsorbed effluent; Fenton process effluent> activated carbon Adsorption effluent> Simulated wastewater> Addition effluent; Activated carbon adsorption effluent> Addition effluent> Fenton process effluent> Simulated wastewater. Comparing the effluent toxicity of several treatment processes, it was found that the toxicity of almost all wastewater was reduced, indicating that several treatment processes can effectively reduce the toxicity of simulated wastewater, which has profound practical significance.