氮封微压气浮在焦化含硫污水中的应用
|
摘要
针对炼油厂延迟焦化装置含硫污水含有焦粉细微颗粒、油类以及硫化物的特点,研发出一体化氮封微压气浮工艺,在处理焦化装置50 m~3/h含硫污水时,油脱除率为50.39%,COD脱除率为13.62%,固体悬浮物(SS)浓度脱除率为82.61%,浊度下降了92.87%,油含量小于300 mg/L,SS浓度不大于50 mg/L,运行费用约1.33元/m~3废水,减少了含硫污水罐回收油量,延长了污水汽提装置的生产周期。
In order to deal with the sour water containing fine particles, oil and sulfide from delayed coking unit, an integrated nitrogen-sealed micro-pressure air floatation process has been developed. In treatment of the sulfurcontaining wastewater 50 m~3/h from the coking unit, the process can achieve following results: oil removal rate at 50.39%, COD removal rate at 13.62%, SS removal rate at 82.61%, turbidity reduction by 92.87%, oil content less than 300 mg/L, SS concentration less than 50 mg/L, operating cost about 1.33 yuan/m~3 wastewater, reduced oil for recovery in the sulfur-containing wastewater tank, and extended operation cycle of the wastewater stripping unit.
In order to deal with the sour water containing fine particles, oil and sulfide from delayed coking unit, an integrated nitrogen-sealed micro-pressure air floatation process has been developed. In treatment of the sulfurcontaining wastewater 50 m~3/h from the coking unit, the process can achieve following results: oil removal rate at 50.39%, COD removal rate at 13.62%, SS removal rate at 82.61%, turbidity reduction by 92.87%, oil content less than 300 mg/L, SS concentration less than 50 mg/L, operating cost about 1.33 yuan/m~3 wastewater, reduced oil for recovery in the sulfur-containing wastewater tank, and extended operation cycle of the wastewater stripping unit.
引文
[1]彭刚,何永强,汪泽龙.VF–1200立式密闭氮气气浮在高Ⅱ联污水处理中的应用[J].内江科技,2009(2):129.
[2]郭学峰,王和琴,赵广胜.高含硫油气田含硫废液的达标处理回注方法[J].工业水处理,2013(5):86.
[2]郭学峰,王和琴,赵广胜.高含硫油气田含硫废液的达标处理回注方法[J].工业水处理,2013(5):86.