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炼油厂油品加工过程中产生相当数量的含硫污水,尤其是加工高含硫原油时,含硫污水中硫化物浓度更高。含硫污水一般来自催化裂化,延迟焦化,加氢精制,等装置,有的排水点含硫量高达5000～10000毫克/升。如果这种含硫污水不经脱硫予处理就排入全厂性含油污水,进入污水处理场,就要影响“老三套”的正常运转。因此有必要设立含硫污水系统,在装置内进行予处理。同时,在油品精制过程中,亦产生相当数量的含碱污水,其碱度
Refining oil processing plant produces a considerable amount of sulfur-containing wastewater, especially when processing high-sulfur crude oil, the sulfur content of sulfur-containing sewage is higher. Sulfur sewage generally come from catalytic cracking, delayed coking, hydrotreating, and other devices, and some drainage points sulfur content of up to 5000 ~ 10000 mg / l. If this kind of sulfur-containing sewage is discharged into the whole plant oily wastewater without being desulfurized, it will affect the normal operation of the “third-generation-old-set” when it enters the sewage treatment plant. Therefore, it is necessary to set up a sulfur-containing sewage system for pretreatment within the plant. At the same time, in the oil refining process, also produces a considerable amount of alkali-containing sewage, its alkalinity