In oilfields, there are often waste water ponds for the collection of leaking waste oil and oily rainwater. Oily wastewater contains dirty oil, crude oil, water and abrasive particulate matter, and submerged pumps or submersible pumps are commonly used to transport this type of media. Due to the complexity of the media within the wastewater, traditional pumps are prone to corrosion, difficult to maintain and are prone to problems when not used for long periods of time.
Nowadays, many design institutes are gradually starting to use rubber covered rot or pumps as conveying equipment when selecting models. This is mainly because the rotor and pump body need to be free of clearance in the lobe pump's overflow chamber, and dry installation also makes later maintenance a lot easier.
Secondly, the rubber rotor of the lobe pump has good resistance to media, which, together with the non-clogging, positive and negative rotation of the lobe pump, makes it the first choice for supporting equipment in this station of oily sewage treatment in the petroleum and petrochemical industry.
Furthermore, the low lobe pump speed and the low shear force on the medium make it less prone to emulsification, which allows the collected waste water to be treated directly.