xc445408333 “I’m saving energy; where are you?” Petrochemical 0503 reverse osmosis concentrated brine recovery

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With the increasing emphasis placed in recent years by ** and society on the comprehensive utilization of water resources, Lanzhou Petrochemical Company has continued to invest in projects aimed at water conservation and emission reduction. Against this backdrop, there is great potential to improve the water resource utilization rate of reverse osmosis systems and reduce emissions. The reverse osmosis system in the desalination unit of Lanzhou Petrochemical Company boasts advantages such as high desalination efficiency, low chemical contamination, high level of automatic control, and low overall energy consumption. However, the concentrated water – which accounts for about 25% of the total reverse osmosis treatment volume and refers to wastewater with a high salt content of >2000 mg/l – is discharged directly. If this concentrated water could be recycled, it would yield significant economic and environmental benefits while helping to save water and reduce emissions. 1. Overview of the desalinated water unit: This unit is primarily used for feeding water to sub-high pressure boilers, meeting the secondary desalinated water standards (GB12145-1999). The water source for the device is water from the Yellow River, and a treatment process comprising pretreatment + reverse osmosis + mixed ion exchange beds is used. The water fed into the device undergoes pretreatment until its quality meets the requirements for reverse osmosis feedwater, after which it enters the reverse osmosis process. The system consists of five units operating in parallel, with each unit having a production capacity of 100 t/h; the system’s recovery rate is 75%, allowing the removal of the vast majority of ions and organic molecules. The product water, which accounts for 75% of the total treated volume (i.e., fresh water with a salt content of 2000 mg/l), is discharged directly. Of this concentrated water, 25% of it can be recovered through reverse osmosis for concentrated water; approximately 50% of the concentrated water can be recovered in this way. Calculations show that with the addition of concentrated water treatment, the overall recovery rate of the system is around 88%~90%, which contributes to energy savings and emission reduction. For contact information, message me via the in-site messaging system: @Guan Gongyu @FishInTheDesert @Wang Tianze @Yi Tailong'er