Method for separating and concentrating glyphosate stock solution

The invention discloses a method for concentrating glyphosate mother solution by membrane separation technique, separating glyphosate mother solution by selectively permeable membrane at normal temperature and high pressure, thus achieving the concentrating effect, and the whole course comprises preprocessing device, pressure pump, concentrating device and auxiliary system, where the concentrating device is the kernel part and for achieving better effect, comprises reverse osmosis and accept filtration or two-stage reverse osmosis. The advantages of the invention: it can effectively concentrate glyphosate mother solution and assure the quality of the glyphosate mother solution, and reduces secondary pollution and energy consumption in the concentrating course. And the invention can be widely applied to the occasions in need of concentrating glyphosate.