Abstract
In this study, the emulsified oily wastewater was collected from a petrochemical plant. The size distributions of the emulsified oil particles in the wastewater and the supernatant liquid generated from the wastewater flocculation were conducted using scattered light, and routine analyses of COD and oil content in the wastewater were performed. This paper studied the oil removal process during flocculation using PAC and/or PAM and discussed the reason of low degreasing rate of the tight-emulsified petroleum wastewater. Experimental results show that the emulsified petroleum wastewater is a kind of high-concentration (COD, 9,600.0 mg·L−1) tight-emulsified (weighted average oil particle size, 440 nm) oil-containing (553.0 mg·L−1) wastewater. Compared with that in treating ordinary emulsified wastewater, the oil removal efficiency of the flocculation method based on PAC and PAM in treating tight-emulsified petroleum wastewater is relatively low (the highest oil removal rate is only about 85%). It is speculated that the reasons may be that the PAC and PAM form small oil alum flocs that do not sediment easily in water.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IOP Conference Series: Materials Science and Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
