A mobile concentration system (MCS) for milk (100) comprising : a vehicle havinga holding tank for receiving and holding milk (116)； and a concentration system(110) mounted to the vehicle and coupled in fluid communication with the holdingtank (116). The concentration system (110) adapted to remove milk from the holdingtank and process the milk while the vehicle is stationary and/or uploading orunloading of milk, or underway. The concentration system including a reverseosmosis filtration system (106) adapted receive the milk from the holding tank(116) and process the milk to generate a stream of substantially water (132) anda product stream of concentrated milk (110). A feed section comprises product/water/CIP(clean in place) valving systems, high pressure pumping equipment (124) operatingto receive and pressurize the milk through-out the system. A concentration levelcontrol system includes a control valve regulating the concentrate flow (110)to achieve a fixed system operating pressure to control the system. A method ofcollecting and concentrating milk from the concentration system comprising:under pressure, depositing milk into a holding tank； drawing milk from the holdingtank while the vehicle is stationary and/or uploading or unloading of milk, orunderway and directing the milk to the concentration system carried by the vehicle；and operating the concentration system while the vehicle is stationary and /or uploading or unloading of milk, or underway to remove water from the milk byreverse osmosis filtration system in combination with the concentration levelcontrol system.
