Abstract: A liquid liquid pulse effluent flow method is developed for high level liquid waste (HLLW) storage tank. Using water and simulative fluid as medium, the optimum technology parameters are established under different condition functions, such as size, operation, control, etc. The results indicate that the pulse effluent flow ballast, used for mixing round the HLLW with indissolvable solid granules and preventing it from sediment and hardening, is a safe, reliable and free maintained new device.