制革废水在高级氧化条件下的行为解析。

Elucidation of the behavior of tannery wastewater under advanced oxidation conditions.

作者信息

Schrank S G, José H J, Moreira R F P M, Schröder H Fr

机构信息

Institut fuer Siedlungswasserwirtschaft, Aachen University, Templergraben 55, D-52056 Aachen, Germany.

出版信息

Chemosphere. 2004 Aug;56(5):411-23. doi: 10.1016/j.chemosphere.2004.04.012.

DOI:10.1016/j.chemosphere.2004.04.012

PMID:15212906

Abstract

Diverse advanced oxidation process (AOP) techniques applying UV, TiO2/UV, O3 and O3/UV were used to degrade pollutants contained in tannery wastewater. The total mineralization of these pollutants is desirable, but it is quite energy consuming and sometimes impossible. Therefore the objective was to achieve an enhancement of biodegradability, preferentially with a decrease in toxicity in parallel. This work demonstrates that the dominant pollutants were chemically degraded by oxidation, while changes in carbon content were only marginal. These results were obtained monitoring the total organic carbon content (TOC), chemical and biochemical oxygen demand (COD and BOD), and substance-specific pollutant content by application of gas chromatography/mass spectrometry (GC-MS) and liquid chromatography/mass spectrometry (LC-MS). Daphnia magna toxicity testing performed in parallel proved a decrease in toxicity after AOP treatment of the tannery wastewater.

摘要

采用多种先进氧化工艺（AOP）技术，包括紫外线（UV）、二氧化钛/紫外线（TiO2/UV）、臭氧（O3）和臭氧/紫外线（O3/UV），来降解制革废水中所含的污染物。虽然希望这些污染物能完全矿化，但这相当耗能，有时甚至无法实现。因此，目标是优先提高生物降解性，同时降低毒性。这项研究表明，主要污染物通过氧化作用被化学降解，而碳含量的变化微乎其微。通过监测总有机碳含量（TOC）、化学需氧量和生化需氧量（COD和BOD）以及应用气相色谱/质谱联用仪（GC-MS）和液相色谱/质谱联用仪（LC-MS）测定特定物质的污染物含量得出了这些结果。同时进行的大型溞毒性测试证明，制革废水经AOP处理后毒性降低。