基于臭氧/紫外线法的石化污水深度处理

Advanced Treatment of the Petrochemical Wastewater Based on O_3/UV Technique

石化行业中的炼油污水经过常规处理工艺后各种有害物质含量虽已达到排放标准,但含量仍较高,长期直接排放必然会导致环境问题,最好的解决办法是对污水进行深度处理后循环利用.针对这种要求,以福建炼油厂的生化池出水为目标水,利用臭氧/紫外线法进行深度处理实验研究,使其满足回用标准,补充到生产用水管线中,参加下一轮的生产循环.实验中对臭氧浓度(分别采用10、20、30、40 g/h的臭氧加入量)及紫外线对水质处理的影响(有或无紫外线)进行了实验分析.试验所用的臭氧发生器为青岛国林生产的CF-G-3-040G型臭氧发生器,其功率为500 W;紫外线灯为广东雪莱特生产的单端紫外线灯,其功率为40 W,峰值波长为253.7 nm;反应器则为自行设计、容积170 L的普通玻璃容器.文中还给出了处理污水达到回用标准所用时间与所加臭氧/紫外线的关系,对该厂下一步的污水深度处理回用技术具有实际的指导意义.

Even though the wastewater drained from refinery has reached the discharging standard after processing in the factory, the concentration of pollutants remain very high and will result in environmental problems in the long run without further treatment. Therefore,a further processing should be launched to make it reach recyclable standard. In this paper,the samples of the wastewater taken from Fujian Refinery and the O3/UV advancement treatment method is adopted to make it reusable and recyclable to the production water pipe. Different O3 concentration （10,20,30,40 g/h） and with/without UV input have been studied in this process. In the experiment,the O3 generator with mode type CF-Cr-3-040Gis manufactured by Qingdao Guolin Company Ltd. with rated power 500 W;the single ended LIV lamp is manufactured by Guangdong Bright Star Company Ltd. with rated power 40 W and peak wavelength 253.7 nm; the reaction vessel is the ordinary 170 L glass container designed by ourselves. The relation between the processing time and the input quantity of the O3/UV was described, which should play an important pragmatic role in directing them in wastewater advanced treatment.