• The suction port of pneumatic pump is buried in the floating mud (or drift mud) to be dredged in the form of a vacuum cleaner, and the sludge enters           the pump body under the effect of the water pressure difference (or by means of a vacuum device)

• No mechanical motion process, no disturbance to the soil layer and water, no secondary pollutions such as mud spill and water turbidity

• No overflow process. The whole process of mud discharge, mud transport and mud unloading is closed operation with good environmental protection          performance and dredging effect


• Simplicity in structure, modularity as well as convenient construction and operation

• Simple requirements for carrier, which may be modified from a general vessel or may be a simple surface platform

• Suitable for all kinds of back-silting soil, loose sand and undisturbed soil (including iron sand)



• The mud discharge concentration may reach up to 1.30~1.40t/m3 (barge loading) or 1.20~1.30t/m3 (pipeline transfer), and the mud discharge                       concentration can be adjusted within the range of 60-90% of the underwater mud volume, up to 95% of the underwater mud volume, and with less               residual water treatment volume

• Precise depth control, better flatness

• The operation can reach 200 meters underwater, and the deeper, the more efficient



• Dredging of channel berths of various ports

• Ecological dredging and storage recovery of lakes and reservoirs of different depths

• Pollution-free and environmentally friendly as well as ecological dredging of urban rivers and lakes

• Dredging engineering under special construction environments