Operation of domestic IPX energy recovery device in large-scale reverse osmosis seawater desalination
This paper introduces the operation of a domestic motor-driven rotor-type energy recovery device in a seawater desalination plant in Shandong.The seawater desalination plant adopts air flotation-ul-trafiltration pretreatment,and is desalinated by secondary reverse osmosis,and the secondary reverse os-mosis production capacity is 50,000 tons peer day.Three sets of SWRO units with a production capacity of 19,600 tons peer day are set up for primary reverse osmosis seawater desalination.Among them,the 1 #unit adopts the IPX-110 energy recovery device.The commissioning was completed in May 2020.The test efficiency is 90.5%.It has been running for more than 3 years.The current efficiency is 92.0%,and the operating performance is stable.The 2 # and 3 # units use imported energy recovery devices.The opera-tion results of various indicators reach the design goals and meet the water supply requirements.
Energy recovery deviceIPXReverse osmosisSeawater desalination