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2. Wastewater:

The increase in wastewater after this transformation is mainly a small amount of oily wastewater discharged from the pre-dehydration drying tower of the propylene refining unit, with an annual discharge of 2t, which is treated by relying on the company's existing sewage treatment system. The sewage treatment plant in the factory has a total design scale of 850m³ /h . The sewage treatment plant is divided into an oily wastewater treatment system and a salty wastewater treatment system. The oily wastewater treatment system is connected to the sewage recovery deep treatment system, which can treat the small amount of oily wastewater generated by this project.

3. Solid waste:

The newly generated solid waste after this technical transformation is mainly the waste dehydration molecular sieve ( hazardous waste HW49 900-039-49) generated by the pre-watering unit of the propylene refining device.

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