高浓度含酚废水构成分析及芬顿氧化技术应用

Analysis of Composition of High Concentration Phenolic Wastewater and Application of Fenton Oxidation Technology

针对江苏某石油炼化企业高含酚废水不达标问题,通过色谱分析了挥发酚的构成,发现进水中主要成分及含量(质量比)为苯酚60%、间甲基苯酚20%、邻甲基苯酚19%。因厂区用地紧张,选用芬顿技术进行升级改造,实现了挥发酚98.9%以上的去除。在调试过程中通过将沉淀池进水管上移到水面以上,并按非满流运行,解决了调碱槽出水泡沫造成沉淀池进水管气阻,引起调碱槽水面升高漫出的问题。有机硅消泡剂的微量投加解决了芬顿主反应塔泡沫逸出的问题。

Aiming at the problem that high phenol contained wastewater in one of Jiangsu petroleum refining enterprise which effluent is not up to standard, the composition of volatile phenol is analyzed by chromatography. It is found that main components and content(mass ratio) of influent water are 60% phenol, 20% m-Cresol, and 19% o-Cresol. Due to the tight use of plant area, Fenton technology is selected for upgrading, and finally 98.9% of volatile phenol is removed. During commissioning process, by moving sedimentation tank inlet pipe above water surface and operating according to non-full flow, the problem of foam resistance of inlet pipe of sedimentation tank caused by effluent foam of alkali adjustment tank is solved. This problem causes the water surface of alkali adjustment tank rise and overflow. The micro-dosing of silicone defoamer solves the escape problem of Fenton main reaction tower foam.